CA2524765A1 - Operational lock and depth adjustment for fastening tool - Google Patents
Operational lock and depth adjustment for fastening tool Download PDFInfo
- Publication number
- CA2524765A1 CA2524765A1 CA002524765A CA2524765A CA2524765A1 CA 2524765 A1 CA2524765 A1 CA 2524765A1 CA 002524765 A CA002524765 A CA 002524765A CA 2524765 A CA2524765 A CA 2524765A CA 2524765 A1 CA2524765 A1 CA 2524765A1
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- Canada
- Prior art keywords
- trigger
- fastening tool
- trip mechanism
- contact trip
- trigger switch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25C—HAND-HELD NAILING OR STAPLING TOOLS; MANUALLY OPERATED PORTABLE STAPLING TOOLS
- B25C1/00—Hand-held nailing tools; Nail feeding devices
- B25C1/008—Safety devices
Abstract
A fastening tool including a contact trip mechanism having a trigger block.
The contact trip mechanism is moveable to a retracted position. The fastening tool also includes a slider member connected to the trigger block and a link member adjustably coupled to the slider member. The fastening tool further includes a lockout pin movable between a first position and a second position. The lockout pin in the first position decouples the slider member and the link member and holds the trigger block in a blocked position.
The contact trip mechanism is moveable to a retracted position. The fastening tool also includes a slider member connected to the trigger block and a link member adjustably coupled to the slider member. The fastening tool further includes a lockout pin movable between a first position and a second position. The lockout pin in the first position decouples the slider member and the link member and holds the trigger block in a blocked position.
Description
Attorney Docket No. 0275A-00087~t OPERATIONAL LOCK AND DEPTH ADJUSTMENT FOR FASTENING TOOL
. FIELD OF THE INVENTION
[Q001~ The present inventian relates to a cordless fastening tool and more specihcalty to a depth adjustment mechanism and an operational lock.
BACKGROUND OF THE INVENTION
. FIELD OF THE INVENTION
[Q001~ The present inventian relates to a cordless fastening tool and more specihcalty to a depth adjustment mechanism and an operational lock.
BACKGROUND OF THE INVENTION
[0002] Traditional fastening tools can employ pneumatic actuation to dfwe a fiastener into a work-piece. In these tools, air pressure from a pneumatic system can be utilized to both drive the fastener into the work-piece and to reset the tool after driving the fastener. It will be appreciated that in the pneumatic system a hose and a compressor are required to accompany the toot. To that end, a combination of the hose, the tool and the compressor provides far a large, heavy and bulky package that is relatively inconvenient and cumbersome to transport.
[OA03~ One alternative to a tool that requires a pneumatic system are tools that employ combustion systems for generating power to drn' re a fastener into a work-piece: These tools typically hold a combustible propellant and have a battery that is employed to pnaduce a spark for igniting the combustitiie propellant.
Expanding combustion gases are used to drive the fastener. ~dditionat propellant canisters, therefore, must be carried to ensure continued use of the fastening tool.
Moreover, the combustion system can exhaust combustion gases in close proximity to the user.
Attamey Docket No. 0275A-000974 (0004 These fastening toots often times employ a retat'~rety complicated depth adjustment scheme that is integrated into a contact trip. These depth adjustment schemes can employ thumb-wheels and threaded rods to adjust the depth at which the fastening tool drives the fastener into the work-piece.
UVhile such depth adjustment schemes work well for their intended purpose, they tend to be relatively more expensive, relatively slow to adjust and provide a more finite range of depth adjustment tfian is typically needed far some applicafions, particularly consumer-grade fastening tools. Accordingly, there is a need in the art for an.
improved depth adjustment scheme.
[Of~S~ A fastening t~f including a contact trig mechanism hawing a trigger block: The contact try mecttar~~m is moveable- to a re#racted position. The fastening tool also includes a slider member connected to the trigger block and a link member adjustably coupled to the slider member The fastening tool further incfudes a lockout pin movable between a first position and a second position.
The lockout pin in the first position derouples the slider member and the link member and holds the trigger block in a blocked positron.
jOtlt~ Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description arid speafic examples, white indicating the various z Attorney Docket hta. 0275A-000974 embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
BRIEF DESCRfPTION OF THE DRAWINGS
[0007] The present invention will become more fully understood from the detailed description, the appended claims and the accompanying drawings, wherein:
[t~8~ Figure 1 is a perspective view of an exemplary cordless fastening tool constructed in accordance with the teachings of the present invention showing an exemplary fastener and an exemplary work-piece;
j0009~ Figure 2 is simita~ to Figure 1 and shows a transmission, a driver mechanism and a control module constructed in accordance with the teaching of the pre~nt invention;
(001flj Figure 3 is a partial perspective view of the fastening tool of Figure 1 and shows the transmission and the driver mechanism Including a crank link trade and a crank link return-spring;
[001'f~ Figure 4 is a partial perspective view of the fastening tool of Figure 1 and shows the driver mechanism and the transmission including a flywheel, a cam gear, a first drnre gear and a second drive gear;
[0012 Figure 5 is a partial front view of the transmission showing the flywheel and the cam gear prior to engagement with a clutch pin;
[00131 Figure ~ is sirnitar to Figure 4 but shows the transmission prior to engagement wish the driver mechanism;
[OA03~ One alternative to a tool that requires a pneumatic system are tools that employ combustion systems for generating power to drn' re a fastener into a work-piece: These tools typically hold a combustible propellant and have a battery that is employed to pnaduce a spark for igniting the combustitiie propellant.
Expanding combustion gases are used to drive the fastener. ~dditionat propellant canisters, therefore, must be carried to ensure continued use of the fastening tool.
Moreover, the combustion system can exhaust combustion gases in close proximity to the user.
Attamey Docket No. 0275A-000974 (0004 These fastening toots often times employ a retat'~rety complicated depth adjustment scheme that is integrated into a contact trip. These depth adjustment schemes can employ thumb-wheels and threaded rods to adjust the depth at which the fastening tool drives the fastener into the work-piece.
UVhile such depth adjustment schemes work well for their intended purpose, they tend to be relatively more expensive, relatively slow to adjust and provide a more finite range of depth adjustment tfian is typically needed far some applicafions, particularly consumer-grade fastening tools. Accordingly, there is a need in the art for an.
improved depth adjustment scheme.
[Of~S~ A fastening t~f including a contact trig mechanism hawing a trigger block: The contact try mecttar~~m is moveable- to a re#racted position. The fastening tool also includes a slider member connected to the trigger block and a link member adjustably coupled to the slider member The fastening tool further incfudes a lockout pin movable between a first position and a second position.
The lockout pin in the first position derouples the slider member and the link member and holds the trigger block in a blocked positron.
jOtlt~ Further areas of applicability of the present invention will become apparent from the detailed description provided hereinafter. It should be understood that the detailed description arid speafic examples, white indicating the various z Attorney Docket hta. 0275A-000974 embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
BRIEF DESCRfPTION OF THE DRAWINGS
[0007] The present invention will become more fully understood from the detailed description, the appended claims and the accompanying drawings, wherein:
[t~8~ Figure 1 is a perspective view of an exemplary cordless fastening tool constructed in accordance with the teachings of the present invention showing an exemplary fastener and an exemplary work-piece;
j0009~ Figure 2 is simita~ to Figure 1 and shows a transmission, a driver mechanism and a control module constructed in accordance with the teaching of the pre~nt invention;
(001flj Figure 3 is a partial perspective view of the fastening tool of Figure 1 and shows the transmission and the driver mechanism Including a crank link trade and a crank link return-spring;
[001'f~ Figure 4 is a partial perspective view of the fastening tool of Figure 1 and shows the driver mechanism and the transmission including a flywheel, a cam gear, a first drnre gear and a second drive gear;
[0012 Figure 5 is a partial front view of the transmission showing the flywheel and the cam gear prior to engagement with a clutch pin;
[00131 Figure ~ is sirnitar to Figure 4 but shows the transmission prior to engagement wish the driver mechanism;
Attorney Docket No. 0275A-000974 [00141 Figure 7 is similar to FigurB 5 but shows a ramp on the cam gear in contact with the clutch pin;
[Ot~15~ Figure 8 is similar to Figure 6 but shows the driver mechanism in bottom position;
[t)Q16J Figure 9 is an exploded assembly view of a contact trip mechanism including a depth adjustment mechanism constructed in accordance with the teachings of the present invention;
[#t017j Figure 1 ~ is a front view of the contact trip mechanism in a retracted position;
ja018j Figure 11 is a front view of the contact trip rnechanisrn of Figure 1 Q
showing the contact trip mechanisrt~ in an exkended position;
j~19~ Figure 12a is a partial #ront view of the contact trip mechanism of Figure 10 showing the slider rr~mber disengaged from the link member, wherein the slider member is in a condition whefe it hes pivoted away from the link member to effect the disengagerrien3 of the slider member from the link member;
jp02~J Figure 12b is a view that is similar to Figure 12a but which shows an alternately constructed contact trip mechanism wherein the slider member is in a condition where iE has translated away from they link member to effect the disengagement of the slider member from the fink member, [00~1~ F'~gure 13 is similar to Figure 12 and shows the link member in a tower posiifE~on to effectively elongate the contact trip mechanism;
jt'~2Zj Figure 14 ~ similar to Figure 1 ~ and shows the slider member engaged with the link member, Attorney Docket No. t72?SA-0OO974 [0023 Figure 15 is a partial top view of a lockout catch; a trigger switch and an actuation member constructed in accordance with the teachings of the present invention;
[0424 Figure 16 is similar to Figure 15 but shows ~ckout catch preventing the actuation member from contacting the trigger switch;
[t~02~ Figure 17 is similar to Figure 15 and shows the Lockout catch in an operational position; and [0026 Figure 18 is similar to Figure 't 7 and shows a trigger block in an unblocked position and the actuation member contacting the trigger switch.
DETAtL.ED DESCRIPTION OF THE VARIOUS EMBQDINIENTS
[0~2Tj The following description of the various embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application or uses.
[a028~ With reference to Figure 1, an exemplary fastening tool constructed in accordance with the teachings of the present inventron is shown and generally indicated by reference numeral 10. The fastening toot 1 a can include an exterior housing 12, which can fiouse a motor 14, a transmission 16, a driver mechanism and a control module 2D. The fastening too! 10 can also incleade a nosepiece 22 and a fastener magazine 24 and a battery 26. The fastener magazine 24 can be coupled to the driuer mechanism 18, while the battery 2B can be coupled to the exterior housing t 2. The motor 14 can drive the tcainsmission 1 fi, which in turn can actuate the driver mechanism 1 ~. Actuation of the driver mechanism 1 g can drive fasteners Attamey Dxket No. 0275A-000974 28, which are sequentiatiy fed from the fastener magazine 24 into the nosepiece 22, into a work-piece 3g. The fasteners 28 could be nails, staples, brads, clips or any such suitable fastener that could be driven into the work-piece 30.
[0029 Wrifi reference to Figure 2, a driveshaft 32 can connect an input (not s~peci~cafiy shown) of the transmission 16 to an output (not specifically shown) of the motor 14. A transmission pausing 34 can encase the transmission i6, a portion of a driveshaft 32 and various components of the transmission 16. A
driveshaft haring 36 can be employed to joumatty support the driveshaft 32 in the transmission housing 34. With reference to Figures 2 and 3, the transmission can include a first drive gear 38 and a second drive gear 40 that can be coup~d for rotation with the driveshaft 32 within the transmission housing 34. The fist drive gear 38 can be closer to the motor 14 relative to the second drive gear 40. It will be appreciated that the dmreshaft 32, the first drive gear 38 and the second drive gear 4t# can rotate at the same rotations! speed_ [8~3D~ With reference to Figures 3 and 4, the transmission 16 (Figure 2) can also include a flywheel 42 and a cam gear 44 that can be mounted for rotation on a transmission shaft 46. The first drive gear 38 can meshingly engage and d~nre the flywheel 42 while the second drive gear 4t? can meshingly engage and drive the cam gear 44. The flywheel 42, the cam gear 44, the first drive gear 38 and the second drive gear 4Q can form a transmission gear set 48. To that end, each gear of the transmission gear set 48 can be configured (e.g., by pitch diameter andlor by number of teeth) so that the flywheel 42 and the cam gear 44 rotate at different ~nor~y oac~~ No. azT~-oaos74 rotational speeds. The flywheel 42, for eXample,~ can rotate in response to rotation of the driveshaft 32 at a faster rotational velocity than the cam gear 44.
[Q031] lNith reference to Figure 5 through Figure 8, the cam gear 44 can include a cover 50 defining a ramp 52. The cover 5C1 can focedly connect to the cam gear 44 opposite the flywheel 42. The flywheel 42 can include a clutch arm 54 that can rotate with the remainder of the flywheel 42. The clutd~ a~rn 54 can ~
dispo~
on a side of the ramp 52 opposite the cam gear 44. The ramp 52 can be configured td engage a Butch pin 56 that is can~ied by the clutch arm 54, as shown in Figure 7.
For example, rotation of the cam gear 44 at a rotational velocity that is less than that of the flywheel 42 can cause a head 58 of the clutch pin 56 to advance toward or approach the ramp 52, as is illustrated in Figures 5 and 7. A clutch pin spying 60 can bias the clutch pin ~ into a retracted or a seated position f2, which is shown in Figure 5. Contact between the ramp 52 and the clutch pin ~ can cause the clutch pin 5~ to travel up the ramp 5~ and posh the clutch pin 56 outward~t from the clutch arm S4 from fhe seated position s2 into an extended position 64, as shown in Figure 7.
[Qfl321 It wilt be appreciated that when the clutch pin 56 is in the extended position 6~4, the clutch pin 5fi can extend above a face 6fi of the Butch arm 54 in a direction op~site the cover 5~. In the seated position 62, the clutch pin 56 can extend below an opposite clutch arm face fib, which can be ad[accent to the cover 50.
it will also be appreciated that the clutch arm 5~4 can be counter-balanced such that the clutch pin 56 is radially spaced apart from a center of the transmission shaft 45.
Attorney Docket No. 0275A-000974 The opposite side of the clutch arm 54, which can counter-balance the clutch pin 56 with a suitable weight 70, is distal from the clutch pin 56.
[0033 When the clutch pin 56 contacts the ramp 52, the ramp 52 pushes the clutch pin 58 into the extended position 64, as shown in Figure 7. !n the extended position 64, the clutch pin 56 engages the driver mechanism 18. It will be appreciated that the extended posifion 64 can coincide with placement of the clutch pin 56 along any part of the ramp 52 that permits the clutch pin 56 to extend from the Butch arm 54 by a distance that is sufftcient to engage the driver mechanism 18.
[t1034~ The driver mechanism 18 Includes a driver blade 72 that connects to a crank link 74. The crank fink 74 includes a crank link cam 76 (Figure 3).
The driver mechanism 18 also includes a crank link return-spring 78 (Figure 3) that can connect to the crank link cam 76. The clutch pin 56 can engage the crank link 74 at a pin catch 80 (Figure 4~ and can drive the crank link 74 from a ftrst position $2 to a second position 84. The motion of the crank fink 74, in furry; maven the drnrer blade 72 from a top position 8& to a bottom position 88. As the fastener 28 in the nosepiece 22 is Located in the driver blade's 72 path of travel, the d inter blade 72 can insert (i.e., drive) the fastener 28 into the work-pace 30 (Figure 1) as it travels to the bottom position 88.
[Ot?35~ When the clutch pin 5fi rotates beyond the ramp 52, the clutch pin spring 60 pushes the clutch pin 5fi back into the seated position 62. When the clutch pin 56 is no longer engaging the crank Link 74, the crank Lick return-spring 78 (Figure 3y can return the crank Link 74 to the first position 82, as shown in Figure 6.
The crank link earn 7G can be disposed in a fink track 90 on the transmission Attorney Docket No. o275A-0OO974 housing 34. The crank link return-spring 78 carp ~ urge (bias) the crank fink cam 76 along the link track 90 toward the first position 82. When the crank link 74 returns to the first position 82, the fastening tool 1 a has completed a driver sequence.
[0036] It will be appreciated that the driver sequence can include the clutch pin 5fi engaging the pin catdi 80 and driving the crank fink 74; the driver blade 12 translating from the first and top positions 82, 86 to the second and bottom positions 84, 88; the ctutch pin 56 disengaging the pin catch 80; and the crank link return-spring 78 urging the crank link cam 76 upwardly in the fink track 90 to cause the crank link 74 and the driver blade 72 to return to the first and top positions 82, 8fi, which can complete the driver sequence.
[~037j With reference to Figures 4 and 8, it will tae appreciated that the crank link 74 can be configured such that travel beyond the second position 84 can be limited by, for example, one or more resilient bumpers 92. The Butch pin 56 (Figure ~, therefore, can disengage from the crank link 74 at the bottom position 88.
tt will also be appreciated that a link joint J4 can pivotally connect the crank link 74 and the driver blade 72. The fink joint 94 can allow the crank link 74 to travel in an approximately circular path, while the driver blade 72 travels in a vertical path (i.e., up and down). Moreover, a blade channel 9fi can be employed to confine the driver blade 72 for movement along a desired axis to ensure travel in an up and down direction.
jo038j With reference to Figures 9 - t1, the naseptece 22 can include a contact trip mechanism 98 that is movable between a retracted position 1t~1, which is illustrated in Figure 10, and an extended position 102, which is illustrated in Figure Attorney Dodcef hIQ. 0275A-000974 11. The contact trip mechanism 98 can be configured to prevent the fastening tool from executing the driver sequence unless the contact trip mechanism 98 is in the retracted position i 00 (Figure 10) (e.g., pressed against the work-piece 30).
(0039] The contact trip mechanism 98 can include a mufti-component mechanical linkage that can connect the nosepiece 22 to a trigger assembly 104 (Figure 2). The contact trip mechanism 98 can Include a contact member 106 that connects to a nosepiece 22. The contact member its can connect.to a Link member 108. The link member 108 can connect to a slider member 1'I0. 'The slider member 110 ~n canned to a carrier member 112. The carrier member 112 can connect to a trigger block 11~4. The carrier member 112 can also connect to a contact trip spring 116. The carrier member 112 and the contact trip spring 116 can connect to a carrier depression 118 formed in the transmission housing ~. By way of example, when the contact member 106 is pushed against the work-piece 30, the contact member 1~ moves up (i.e., toward the ti~rhee! 42j. When the contact member 106 moves up, the contact fi1p mechanism 98 can move into the retracted position 100. ln.the retracted position 1~, tfie trigger block 114 can pivotfram a blocked position 120 to an unblocked position 122.
~0C40~ More specfically, the contact member 108 can include an adjusting fever 124 and a nose-link portion 126r that can extend approximately orthogonatly to a remainder of the contact member 10fi. The nose-link portion 126 can fit into a nose-Conk aperture 128 formed an the fink member 108. The link member 108 can further ind~rdes a pin 129a that can extend through the link rnerhber 108 and into a slot 129b formed in #~e carrier member 112. The fink member 108 cart also include Attorney tJocket N~. 0275A-000974 a plurality of teeth 130 that are distal from the nose-link aperture 128. The plurality of teeth 130 on the link meml~r 108 can engage with a plurality of teeth 132 on the slider member 110. A slider pin 133a can be employed to pivotally couple the slider member 110 to the carrier member 1 t 2. In the example provided, the slider pin 133a is fixedly coupled to the slides member 110 and rotatably disposed in a slider pin aperture 133b in the carrier member 1 t2. The plurality of teeth 130 formed on the link member 108 can be disposed within the carrier depression 1 i 8 fom3ed on the transmission housing 34. A more detailed discussion of the contact trip mechanism 98 is disclosed in commonly assigned United States Patent Application entitled Cordless Fastening Tool Nosepiece with Integrated Contact Trip and Ma azine Feed, fried herewith on , g Serial Number , which is incorporated by reference as if fully set forth herein.
~00~41~ In Figures 9 and 10, a depth adjustment assembly 134 can be employed to control the depth at which the fastener 28 is d~nren into the work-piece 30 (e.g., counter-sink or flashy. The depth adjustment assembly 134 can inclcrde two sets of mating teeth that can be employed to set and seled~ely change the effective length of the contact frip mechanism 98 as desired. In the particular example provided, the plurality of teeth 130 of the link member 108 can be selectnrely engaged to the plurality of teeth 132 of the silder member 110. The plurai'~ies of teeth 130, 132 can be disengaged and then can be reengaged at a different location to change the effective length of the contact trip mecha~issm 98. By changing the effective length of the contact trip mechanism 98, the user can control the depth that the fastening toot 10 drives the fastener 28 lnta the work-pie 30.
A~o~ney aodcec r~o. 02»-ooos~ra [0042] The depth adjustment assembly 134 can also include a depth adjustment actuator mechanism 136. The actuator mechanism i 36 can include an actuator button 138 that can be hinged via an assernbiy pin 140 to the transmission housing 34. An actuator pin 142 can be disposed in an actuator spring 144 and can be connected to the actuator button 138. As shown in Figures 12a and 12b, the user can press the actuator button 138 to push the actuator pin 142 against the bias of the actuator spring 144 and into contact with the slider member 110.
Sufficient movement of the slider member 110 away from the link member 108 can disengage the slider member 110 from the fink r~mber 108. tt will be appreciated that the pin 129a on the link member 108, which is disposed in the groove 129b an the carrier member 112, can restrain the link member 108 and thereby prevent the link member 108 from moving with the slider tr~ember 110, [OQ43~ As shown in Figure 12a, the slider member 110 can pivot away from the link member 108 in a clockwise fashion upon the slider pin 133x, as generally indicated by reference numeral 14~6a. As such, the plurality of teeth 132 on the slider member 110 can disengage from the plurality of teeth 130 an the link member 108. Vl~th reference to Figure 13, the link member 108 can be disengaged from the slider member 110 and the user can moue the adjusting lever 124 of the iinic member 108 up andlor down (as Illustrated in Figure 13) to decrease andlor increase, respectively, the effective length of the contact trip mechanism 98.
W8h reference to Figure 12b, the depth adjustment assembly 134 may be altemaiively configured so as to omit the stiller pin 133a (Figure 12a). in that conhguratian, the slider member 110 can translate away from the fink member 108 in a horizontal Attorney Docket No. 0275A-000974 fashion (i.e., right to left in Figure 12b), as generally indicated by reference numeral 146b.
[OQ44~ With reference to Figures 1, 12a, 13 and 14, it will be appreciated that increasing or decreasing the length of the contact trip mechanism 38 can change the depth at which the fastener 28 is driven into the work-piece 30.
More spec'rfrealty, the fastening tool 10 can be configured to drive the fastener 28 into the work-piece 30 such that a head 148 (Figure 1 ) of the fastener, for example, will sit hush witft the work-piece 30, which is generally indicated by reference numeral 150.
The depth adjustment assembly 134 can also be adjusted such that the head 148 of the fastener 28 can be sunk into (i.e., below the surface of) the work-piece 3tt, which is generally indicated by reference numeral 152 (Figure 1). It will be appreciated that when the head 148 of the fastener 28 is countersunk the head 148 is disposed below a surface 154 of the work-piece 30.
[tlA45j With reference to ~~ures 12a and 13; when the actuator button 138 presses the actuator pin 142 against the sl~ler member 110, the actuator pin 142 can also be employed to restrain movement of the carrier ~ber 112. For example, tire actuator pin 142 can push the slider r~mber 110 such that protrusions 155 fom~ed on the slider member 110 can be inserted through recesses 156 (Figure 9a on the carrier member 112 and into slots i 57 that can be formed into the transmission housing 34 and which intersect the carrier depression 118. When the protrusions 155 are pushed into the slats 157, the contact trip mechanism 98 is held in the extended position 102 (Figure 11 ) and also prevented ftorn moving into the retracted position ltJO (Figure 10). It will be appreciated that when the contact trip Attorney Docket No. 027~!-0Q0974 mechanism 98 is held in the extended position 102, the fastening tool 10 will not be able to execute the driver sequence. It will also be appreciated that the contact trip mechanism 98 illustrated and described herein is held in the extended positron while the user adjusts the effecctivve length of the contact trip mechanism 98.
[OQ48j once the user has selected a suitable position for the link member 108 (i.e., selecting a suitab~ depth for the fastener 28} the user can release the acctuuator button 138. Release of the actuator button 138, in turn, allows the actuator spring 144 to push the actuator pin 142 away from the slider member 110. A
spring S (Figure 9}, such as a leaf spring, may be employed to urge the slider member toward the link member 108 so that the plurality of teeth 130 on the sii~er member 110 can reengage with the plurairty of teeth 130 an the link member 108. By decoupling two members 110, 112, adjusting the effective length of the contact trip mechan'ssm 98 and coupling the two members 110, 112, the user can adjust the depth at wh'~ch the fastener 28 is driven irito the work-piece 30.
[I~t~'Tj With reference to Figures 1 and 2, the trigger assembly 104 can mount to the transmission housing 34 and extend through the exterior ho~irtg 12.
The trigger assembly 104 can include a trigger 158 that can be biased into an extended posi~on 160 (Figure 1 }. The user can move (i.e., pivot andlor translate}
the trigger 158 into an activated position 182 (Figure 2}. When the trigger 158 is in the activated position 162 and the trigger block 114 is in the unblocked position 122, the trigger 158 can activate a trigger switch 164. More sper~caity, a trigger actuation member 18fi can be employed to coups the trigger 1 S8 to the trigger switch 164 and cart cause the trigger sw~ch 1fi4 to generate a tr~ger signal (not Attorney DoEket No. 0275A-000974 shown). When the trigger 158 activates or closes the trigger switch 164, the fastening tool 10 can execute the driver sequence. Electronic control of the fastening tool 10 and the communication to andlar from the control module 20 (e.g., transmission and receipt of the trigger signals is outside the scope of the present disclosure but is disdosed in greater detail in commonly assigned United States Patent Application entitled Electronic Contra! of a Cordless Fastening Tool, filed herewith on , Serial Number , which is hereby incorporated by reference as if fully set forth herein.
rti048] With reference to Figures 1 and 15 - 18, the fastening taut 10 can have an opera#onal lockout mechanism 168 that can also inhibit the fastening toot from executing the driver sequence, The operational lockout mechanism 168 can include a lockout switch l7fJ (Figure 1 ) that can be connected to an actuator catch 172. The lockout switch 170 can be mounted to the exterior housing 12 and can be coupled to the lockout catch 172. The lockout switch 170 artd the lockout catch 172 can move between a lockout position 174, whids is illustrated in Figures 15 and 16, and an operational position 176, which is illustrated in Figures 17 and 18.
The actuator catch 172 can include an aperture 177 through which a catch pin 178 formed ih the transmission housing 34 is disposed to pivotally connect to the lockout catch 172 to the transmission housing 34. The actuator catch 172 can include a second catch pin 179 that can coups the actuator catch 172 with the actuator switch 170.
[0~49j With reference to Figures 15 and 18, when the lockout switch 17~
(Figure 1 ) is in the lockout position 174, the lockout catd~ 172 can hold ~e trigger Attamey Docket No. 0275A-00974 actuation member 166 away from the trigger switch 164. More specifically, when the trigger actuation member 166 is urged toward the trigger switch 164, a portion of the lockout catch 172, such as an arm 180 lockout, can be configured to urge the trigger actuation member 166 away from the trigger switch 164, as shown in Figure 16.
In the example provided, a sfoping surface 180a of the arm 180 deflects the trigger actuation member 166 away from a trigger switch actuator 184 as the trigger (Figure 1) urges the trigger actuation member 166 toward the trigger switch 164.
Because movement of the trigger switch actuator 184 is necessary to actuate the trigger switch 164 and because the sloping surface 180a of the arm 180 inhibits contact between the trigger actuation member 166 and the trigger switch actuator 184, the trigger switch 164 cannot be actuated when the lockout switch 170 (Figure 1 ) is in the lockout position 174.
[005~J With reference to Figures 17 and 18, when the lockout switch 170 (Figure 1) i5 in the operational position 1'T6, the actuator catch 172 does not irthib~
movement of the trigger actuator member 166. In the example provided, when the trigger actuation member 16~ is urged toward the trigger switch 164, the arm can be confrgured so as not to block the trigger actuation member 166 when it is urged by the trigger 158 (Figure 1) toward the trigger swifch actuator 184_ As shown in Figure 17, the trigger block 114 of the contact trip mechanism 98 (Figure g) can additionally block the trigger actuation member 166 from contacting the trigger switch 164 in the example provided, as when the contact trip mechanism 98 (Figure 0) is in the extended position.
Attorney Docket No. 0275A-0Ot7974 [Q051~ In Figure 18, the operation lockout mechanism 168 (Figure 1 ) is in the operational position 176, and trigger block 114 is in the unblocked position 122.
In this arrangement, trigger 158 (Figure 1) may be employed to move the trigger actuation member 166 into contact with the trigger switch ach~ator 184 to actuate the trigger switch 164 and execute the driver sequence. It will be appreciated that when the lockout switch 170 (Figure 1) is in the lockout position 174 (Figure 15), the trigger achtafion member 166 is prevented from contacting the tr~ger switch actuator 184 and as such, the fastening tool cannot be activated even when the trigger 158 (Figure 1) is positioned in the activated position 162 (Figure 2) and the contact trip mechanism 98 is moved to the retracted position 100 (Figure 1 a).
To that end, tfte lockout switch 170 (Figure 1 ) can completely prevent operation of the fastening tool 10 (Figure 1) when placed in the lockout position 174 (Figure 15).
[~052j The trigger switch 164 can be any suitable type of switch including, but not limited to, a micro switch. The tr~ger switch 164 can include a trigger switch body 182 and the trigger switch actuator 184. it can be appreciated that the trigger actuation member 166 can contact the trigger sw~ch body 182 and that this contact does not operate to activate the tr~ger switch 164. Rather, actuation of the trigger switch 164 is effecfed through contact between the trigger actuation member and the trigger switch actuator 184 andlor an actuator lever 188 that can pivot to make contact with the trig~r switch actuator. While the part~uiar trigger switch 164 illustrated u8iizes a translating member for the trigger switch actuator 184, those of ordinary skill in the art will appreciate that other switch conl5guratians, including those that use a pivoting ever to push a translating member, may be readily Attorney Docket No. 0275A-000974 substituted for that which is illustrated herein. By way of the above example, tfie trigger block 114 can deflect the trigget actuation member 166 from the trigger switch actuator 184 when the trigger block 114 is in the blocked position 120 {Figure 17), but the trigger actuation member 166 may sill contact the trigger switch body 182.
j005~3j Those skilled in the art can now appreaate from the foregoing description that the broad teachings of the present inven~on can be implemented in a variety of forms. Therefore, while this invention has been described in connection with par~cutar examples thereof, the true scope of the invention should not be so limited because other modiFcations will become apparent to the skilled practitioner upon a study of the drawings, the specification and the following claims.
[Ot~15~ Figure 8 is similar to Figure 6 but shows the driver mechanism in bottom position;
[t)Q16J Figure 9 is an exploded assembly view of a contact trip mechanism including a depth adjustment mechanism constructed in accordance with the teachings of the present invention;
[#t017j Figure 1 ~ is a front view of the contact trip mechanism in a retracted position;
ja018j Figure 11 is a front view of the contact trip rnechanisrn of Figure 1 Q
showing the contact trip mechanisrt~ in an exkended position;
j~19~ Figure 12a is a partial #ront view of the contact trip mechanism of Figure 10 showing the slider rr~mber disengaged from the link member, wherein the slider member is in a condition whefe it hes pivoted away from the link member to effect the disengagerrien3 of the slider member from the link member;
jp02~J Figure 12b is a view that is similar to Figure 12a but which shows an alternately constructed contact trip mechanism wherein the slider member is in a condition where iE has translated away from they link member to effect the disengagement of the slider member from the fink member, [00~1~ F'~gure 13 is similar to Figure 12 and shows the link member in a tower posiifE~on to effectively elongate the contact trip mechanism;
jt'~2Zj Figure 14 ~ similar to Figure 1 ~ and shows the slider member engaged with the link member, Attorney Docket No. t72?SA-0OO974 [0023 Figure 15 is a partial top view of a lockout catch; a trigger switch and an actuation member constructed in accordance with the teachings of the present invention;
[0424 Figure 16 is similar to Figure 15 but shows ~ckout catch preventing the actuation member from contacting the trigger switch;
[t~02~ Figure 17 is similar to Figure 15 and shows the Lockout catch in an operational position; and [0026 Figure 18 is similar to Figure 't 7 and shows a trigger block in an unblocked position and the actuation member contacting the trigger switch.
DETAtL.ED DESCRIPTION OF THE VARIOUS EMBQDINIENTS
[0~2Tj The following description of the various embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application or uses.
[a028~ With reference to Figure 1, an exemplary fastening tool constructed in accordance with the teachings of the present inventron is shown and generally indicated by reference numeral 10. The fastening toot 1 a can include an exterior housing 12, which can fiouse a motor 14, a transmission 16, a driver mechanism and a control module 2D. The fastening too! 10 can also incleade a nosepiece 22 and a fastener magazine 24 and a battery 26. The fastener magazine 24 can be coupled to the driuer mechanism 18, while the battery 2B can be coupled to the exterior housing t 2. The motor 14 can drive the tcainsmission 1 fi, which in turn can actuate the driver mechanism 1 ~. Actuation of the driver mechanism 1 g can drive fasteners Attamey Dxket No. 0275A-000974 28, which are sequentiatiy fed from the fastener magazine 24 into the nosepiece 22, into a work-piece 3g. The fasteners 28 could be nails, staples, brads, clips or any such suitable fastener that could be driven into the work-piece 30.
[0029 Wrifi reference to Figure 2, a driveshaft 32 can connect an input (not s~peci~cafiy shown) of the transmission 16 to an output (not specifically shown) of the motor 14. A transmission pausing 34 can encase the transmission i6, a portion of a driveshaft 32 and various components of the transmission 16. A
driveshaft haring 36 can be employed to joumatty support the driveshaft 32 in the transmission housing 34. With reference to Figures 2 and 3, the transmission can include a first drive gear 38 and a second drive gear 40 that can be coup~d for rotation with the driveshaft 32 within the transmission housing 34. The fist drive gear 38 can be closer to the motor 14 relative to the second drive gear 40. It will be appreciated that the dmreshaft 32, the first drive gear 38 and the second drive gear 4t# can rotate at the same rotations! speed_ [8~3D~ With reference to Figures 3 and 4, the transmission 16 (Figure 2) can also include a flywheel 42 and a cam gear 44 that can be mounted for rotation on a transmission shaft 46. The first drive gear 38 can meshingly engage and d~nre the flywheel 42 while the second drive gear 4t? can meshingly engage and drive the cam gear 44. The flywheel 42, the cam gear 44, the first drive gear 38 and the second drive gear 4Q can form a transmission gear set 48. To that end, each gear of the transmission gear set 48 can be configured (e.g., by pitch diameter andlor by number of teeth) so that the flywheel 42 and the cam gear 44 rotate at different ~nor~y oac~~ No. azT~-oaos74 rotational speeds. The flywheel 42, for eXample,~ can rotate in response to rotation of the driveshaft 32 at a faster rotational velocity than the cam gear 44.
[Q031] lNith reference to Figure 5 through Figure 8, the cam gear 44 can include a cover 50 defining a ramp 52. The cover 5C1 can focedly connect to the cam gear 44 opposite the flywheel 42. The flywheel 42 can include a clutch arm 54 that can rotate with the remainder of the flywheel 42. The clutd~ a~rn 54 can ~
dispo~
on a side of the ramp 52 opposite the cam gear 44. The ramp 52 can be configured td engage a Butch pin 56 that is can~ied by the clutch arm 54, as shown in Figure 7.
For example, rotation of the cam gear 44 at a rotational velocity that is less than that of the flywheel 42 can cause a head 58 of the clutch pin 56 to advance toward or approach the ramp 52, as is illustrated in Figures 5 and 7. A clutch pin spying 60 can bias the clutch pin ~ into a retracted or a seated position f2, which is shown in Figure 5. Contact between the ramp 52 and the clutch pin ~ can cause the clutch pin 5~ to travel up the ramp 5~ and posh the clutch pin 56 outward~t from the clutch arm S4 from fhe seated position s2 into an extended position 64, as shown in Figure 7.
[Qfl321 It wilt be appreciated that when the clutch pin 56 is in the extended position 6~4, the clutch pin 5fi can extend above a face 6fi of the Butch arm 54 in a direction op~site the cover 5~. In the seated position 62, the clutch pin 56 can extend below an opposite clutch arm face fib, which can be ad[accent to the cover 50.
it will also be appreciated that the clutch arm 5~4 can be counter-balanced such that the clutch pin 56 is radially spaced apart from a center of the transmission shaft 45.
Attorney Docket No. 0275A-000974 The opposite side of the clutch arm 54, which can counter-balance the clutch pin 56 with a suitable weight 70, is distal from the clutch pin 56.
[0033 When the clutch pin 56 contacts the ramp 52, the ramp 52 pushes the clutch pin 58 into the extended position 64, as shown in Figure 7. !n the extended position 64, the clutch pin 56 engages the driver mechanism 18. It will be appreciated that the extended posifion 64 can coincide with placement of the clutch pin 56 along any part of the ramp 52 that permits the clutch pin 56 to extend from the Butch arm 54 by a distance that is sufftcient to engage the driver mechanism 18.
[t1034~ The driver mechanism 18 Includes a driver blade 72 that connects to a crank link 74. The crank fink 74 includes a crank link cam 76 (Figure 3).
The driver mechanism 18 also includes a crank link return-spring 78 (Figure 3) that can connect to the crank link cam 76. The clutch pin 56 can engage the crank link 74 at a pin catch 80 (Figure 4~ and can drive the crank link 74 from a ftrst position $2 to a second position 84. The motion of the crank fink 74, in furry; maven the drnrer blade 72 from a top position 8& to a bottom position 88. As the fastener 28 in the nosepiece 22 is Located in the driver blade's 72 path of travel, the d inter blade 72 can insert (i.e., drive) the fastener 28 into the work-pace 30 (Figure 1) as it travels to the bottom position 88.
[Ot?35~ When the clutch pin 5fi rotates beyond the ramp 52, the clutch pin spring 60 pushes the clutch pin 5fi back into the seated position 62. When the clutch pin 56 is no longer engaging the crank Link 74, the crank Lick return-spring 78 (Figure 3y can return the crank Link 74 to the first position 82, as shown in Figure 6.
The crank link earn 7G can be disposed in a fink track 90 on the transmission Attorney Docket No. o275A-0OO974 housing 34. The crank link return-spring 78 carp ~ urge (bias) the crank fink cam 76 along the link track 90 toward the first position 82. When the crank link 74 returns to the first position 82, the fastening tool 1 a has completed a driver sequence.
[0036] It will be appreciated that the driver sequence can include the clutch pin 5fi engaging the pin catdi 80 and driving the crank fink 74; the driver blade 12 translating from the first and top positions 82, 86 to the second and bottom positions 84, 88; the ctutch pin 56 disengaging the pin catch 80; and the crank link return-spring 78 urging the crank link cam 76 upwardly in the fink track 90 to cause the crank link 74 and the driver blade 72 to return to the first and top positions 82, 8fi, which can complete the driver sequence.
[~037j With reference to Figures 4 and 8, it will tae appreciated that the crank link 74 can be configured such that travel beyond the second position 84 can be limited by, for example, one or more resilient bumpers 92. The Butch pin 56 (Figure ~, therefore, can disengage from the crank link 74 at the bottom position 88.
tt will also be appreciated that a link joint J4 can pivotally connect the crank link 74 and the driver blade 72. The fink joint 94 can allow the crank link 74 to travel in an approximately circular path, while the driver blade 72 travels in a vertical path (i.e., up and down). Moreover, a blade channel 9fi can be employed to confine the driver blade 72 for movement along a desired axis to ensure travel in an up and down direction.
jo038j With reference to Figures 9 - t1, the naseptece 22 can include a contact trip mechanism 98 that is movable between a retracted position 1t~1, which is illustrated in Figure 10, and an extended position 102, which is illustrated in Figure Attorney Dodcef hIQ. 0275A-000974 11. The contact trip mechanism 98 can be configured to prevent the fastening tool from executing the driver sequence unless the contact trip mechanism 98 is in the retracted position i 00 (Figure 10) (e.g., pressed against the work-piece 30).
(0039] The contact trip mechanism 98 can include a mufti-component mechanical linkage that can connect the nosepiece 22 to a trigger assembly 104 (Figure 2). The contact trip mechanism 98 can Include a contact member 106 that connects to a nosepiece 22. The contact member its can connect.to a Link member 108. The link member 108 can connect to a slider member 1'I0. 'The slider member 110 ~n canned to a carrier member 112. The carrier member 112 can connect to a trigger block 11~4. The carrier member 112 can also connect to a contact trip spring 116. The carrier member 112 and the contact trip spring 116 can connect to a carrier depression 118 formed in the transmission housing ~. By way of example, when the contact member 106 is pushed against the work-piece 30, the contact member 1~ moves up (i.e., toward the ti~rhee! 42j. When the contact member 106 moves up, the contact fi1p mechanism 98 can move into the retracted position 100. ln.the retracted position 1~, tfie trigger block 114 can pivotfram a blocked position 120 to an unblocked position 122.
~0C40~ More specfically, the contact member 108 can include an adjusting fever 124 and a nose-link portion 126r that can extend approximately orthogonatly to a remainder of the contact member 10fi. The nose-link portion 126 can fit into a nose-Conk aperture 128 formed an the fink member 108. The link member 108 can further ind~rdes a pin 129a that can extend through the link rnerhber 108 and into a slot 129b formed in #~e carrier member 112. The fink member 108 cart also include Attorney tJocket N~. 0275A-000974 a plurality of teeth 130 that are distal from the nose-link aperture 128. The plurality of teeth 130 on the link meml~r 108 can engage with a plurality of teeth 132 on the slider member 110. A slider pin 133a can be employed to pivotally couple the slider member 110 to the carrier member 1 t 2. In the example provided, the slider pin 133a is fixedly coupled to the slides member 110 and rotatably disposed in a slider pin aperture 133b in the carrier member 1 t2. The plurality of teeth 130 formed on the link member 108 can be disposed within the carrier depression 1 i 8 fom3ed on the transmission housing 34. A more detailed discussion of the contact trip mechanism 98 is disclosed in commonly assigned United States Patent Application entitled Cordless Fastening Tool Nosepiece with Integrated Contact Trip and Ma azine Feed, fried herewith on , g Serial Number , which is incorporated by reference as if fully set forth herein.
~00~41~ In Figures 9 and 10, a depth adjustment assembly 134 can be employed to control the depth at which the fastener 28 is d~nren into the work-piece 30 (e.g., counter-sink or flashy. The depth adjustment assembly 134 can inclcrde two sets of mating teeth that can be employed to set and seled~ely change the effective length of the contact frip mechanism 98 as desired. In the particular example provided, the plurality of teeth 130 of the link member 108 can be selectnrely engaged to the plurality of teeth 132 of the silder member 110. The plurai'~ies of teeth 130, 132 can be disengaged and then can be reengaged at a different location to change the effective length of the contact trip mecha~issm 98. By changing the effective length of the contact trip mechanism 98, the user can control the depth that the fastening toot 10 drives the fastener 28 lnta the work-pie 30.
A~o~ney aodcec r~o. 02»-ooos~ra [0042] The depth adjustment assembly 134 can also include a depth adjustment actuator mechanism 136. The actuator mechanism i 36 can include an actuator button 138 that can be hinged via an assernbiy pin 140 to the transmission housing 34. An actuator pin 142 can be disposed in an actuator spring 144 and can be connected to the actuator button 138. As shown in Figures 12a and 12b, the user can press the actuator button 138 to push the actuator pin 142 against the bias of the actuator spring 144 and into contact with the slider member 110.
Sufficient movement of the slider member 110 away from the link member 108 can disengage the slider member 110 from the fink r~mber 108. tt will be appreciated that the pin 129a on the link member 108, which is disposed in the groove 129b an the carrier member 112, can restrain the link member 108 and thereby prevent the link member 108 from moving with the slider tr~ember 110, [OQ43~ As shown in Figure 12a, the slider member 110 can pivot away from the link member 108 in a clockwise fashion upon the slider pin 133x, as generally indicated by reference numeral 14~6a. As such, the plurality of teeth 132 on the slider member 110 can disengage from the plurality of teeth 130 an the link member 108. Vl~th reference to Figure 13, the link member 108 can be disengaged from the slider member 110 and the user can moue the adjusting lever 124 of the iinic member 108 up andlor down (as Illustrated in Figure 13) to decrease andlor increase, respectively, the effective length of the contact trip mechanism 98.
W8h reference to Figure 12b, the depth adjustment assembly 134 may be altemaiively configured so as to omit the stiller pin 133a (Figure 12a). in that conhguratian, the slider member 110 can translate away from the fink member 108 in a horizontal Attorney Docket No. 0275A-000974 fashion (i.e., right to left in Figure 12b), as generally indicated by reference numeral 146b.
[OQ44~ With reference to Figures 1, 12a, 13 and 14, it will be appreciated that increasing or decreasing the length of the contact trip mechanism 38 can change the depth at which the fastener 28 is driven into the work-piece 30.
More spec'rfrealty, the fastening tool 10 can be configured to drive the fastener 28 into the work-piece 30 such that a head 148 (Figure 1 ) of the fastener, for example, will sit hush witft the work-piece 30, which is generally indicated by reference numeral 150.
The depth adjustment assembly 134 can also be adjusted such that the head 148 of the fastener 28 can be sunk into (i.e., below the surface of) the work-piece 3tt, which is generally indicated by reference numeral 152 (Figure 1). It will be appreciated that when the head 148 of the fastener 28 is countersunk the head 148 is disposed below a surface 154 of the work-piece 30.
[tlA45j With reference to ~~ures 12a and 13; when the actuator button 138 presses the actuator pin 142 against the sl~ler member 110, the actuator pin 142 can also be employed to restrain movement of the carrier ~ber 112. For example, tire actuator pin 142 can push the slider r~mber 110 such that protrusions 155 fom~ed on the slider member 110 can be inserted through recesses 156 (Figure 9a on the carrier member 112 and into slots i 57 that can be formed into the transmission housing 34 and which intersect the carrier depression 118. When the protrusions 155 are pushed into the slats 157, the contact trip mechanism 98 is held in the extended position 102 (Figure 11 ) and also prevented ftorn moving into the retracted position ltJO (Figure 10). It will be appreciated that when the contact trip Attorney Docket No. 027~!-0Q0974 mechanism 98 is held in the extended position 102, the fastening tool 10 will not be able to execute the driver sequence. It will also be appreciated that the contact trip mechanism 98 illustrated and described herein is held in the extended positron while the user adjusts the effecctivve length of the contact trip mechanism 98.
[OQ48j once the user has selected a suitable position for the link member 108 (i.e., selecting a suitab~ depth for the fastener 28} the user can release the acctuuator button 138. Release of the actuator button 138, in turn, allows the actuator spring 144 to push the actuator pin 142 away from the slider member 110. A
spring S (Figure 9}, such as a leaf spring, may be employed to urge the slider member toward the link member 108 so that the plurality of teeth 130 on the sii~er member 110 can reengage with the plurairty of teeth 130 an the link member 108. By decoupling two members 110, 112, adjusting the effective length of the contact trip mechan'ssm 98 and coupling the two members 110, 112, the user can adjust the depth at wh'~ch the fastener 28 is driven irito the work-piece 30.
[I~t~'Tj With reference to Figures 1 and 2, the trigger assembly 104 can mount to the transmission housing 34 and extend through the exterior ho~irtg 12.
The trigger assembly 104 can include a trigger 158 that can be biased into an extended posi~on 160 (Figure 1 }. The user can move (i.e., pivot andlor translate}
the trigger 158 into an activated position 182 (Figure 2}. When the trigger 158 is in the activated position 162 and the trigger block 114 is in the unblocked position 122, the trigger 158 can activate a trigger switch 164. More sper~caity, a trigger actuation member 18fi can be employed to coups the trigger 1 S8 to the trigger switch 164 and cart cause the trigger sw~ch 1fi4 to generate a tr~ger signal (not Attorney DoEket No. 0275A-000974 shown). When the trigger 158 activates or closes the trigger switch 164, the fastening tool 10 can execute the driver sequence. Electronic control of the fastening tool 10 and the communication to andlar from the control module 20 (e.g., transmission and receipt of the trigger signals is outside the scope of the present disclosure but is disdosed in greater detail in commonly assigned United States Patent Application entitled Electronic Contra! of a Cordless Fastening Tool, filed herewith on , Serial Number , which is hereby incorporated by reference as if fully set forth herein.
rti048] With reference to Figures 1 and 15 - 18, the fastening taut 10 can have an opera#onal lockout mechanism 168 that can also inhibit the fastening toot from executing the driver sequence, The operational lockout mechanism 168 can include a lockout switch l7fJ (Figure 1 ) that can be connected to an actuator catch 172. The lockout switch 170 can be mounted to the exterior housing 12 and can be coupled to the lockout catch 172. The lockout switch 170 artd the lockout catch 172 can move between a lockout position 174, whids is illustrated in Figures 15 and 16, and an operational position 176, which is illustrated in Figures 17 and 18.
The actuator catch 172 can include an aperture 177 through which a catch pin 178 formed ih the transmission housing 34 is disposed to pivotally connect to the lockout catch 172 to the transmission housing 34. The actuator catch 172 can include a second catch pin 179 that can coups the actuator catch 172 with the actuator switch 170.
[0~49j With reference to Figures 15 and 18, when the lockout switch 17~
(Figure 1 ) is in the lockout position 174, the lockout catd~ 172 can hold ~e trigger Attamey Docket No. 0275A-00974 actuation member 166 away from the trigger switch 164. More specifically, when the trigger actuation member 166 is urged toward the trigger switch 164, a portion of the lockout catch 172, such as an arm 180 lockout, can be configured to urge the trigger actuation member 166 away from the trigger switch 164, as shown in Figure 16.
In the example provided, a sfoping surface 180a of the arm 180 deflects the trigger actuation member 166 away from a trigger switch actuator 184 as the trigger (Figure 1) urges the trigger actuation member 166 toward the trigger switch 164.
Because movement of the trigger switch actuator 184 is necessary to actuate the trigger switch 164 and because the sloping surface 180a of the arm 180 inhibits contact between the trigger actuation member 166 and the trigger switch actuator 184, the trigger switch 164 cannot be actuated when the lockout switch 170 (Figure 1 ) is in the lockout position 174.
[005~J With reference to Figures 17 and 18, when the lockout switch 170 (Figure 1) i5 in the operational position 1'T6, the actuator catch 172 does not irthib~
movement of the trigger actuator member 166. In the example provided, when the trigger actuation member 16~ is urged toward the trigger switch 164, the arm can be confrgured so as not to block the trigger actuation member 166 when it is urged by the trigger 158 (Figure 1) toward the trigger swifch actuator 184_ As shown in Figure 17, the trigger block 114 of the contact trip mechanism 98 (Figure g) can additionally block the trigger actuation member 166 from contacting the trigger switch 164 in the example provided, as when the contact trip mechanism 98 (Figure 0) is in the extended position.
Attorney Docket No. 0275A-0Ot7974 [Q051~ In Figure 18, the operation lockout mechanism 168 (Figure 1 ) is in the operational position 176, and trigger block 114 is in the unblocked position 122.
In this arrangement, trigger 158 (Figure 1) may be employed to move the trigger actuation member 166 into contact with the trigger switch ach~ator 184 to actuate the trigger switch 164 and execute the driver sequence. It will be appreciated that when the lockout switch 170 (Figure 1) is in the lockout position 174 (Figure 15), the trigger achtafion member 166 is prevented from contacting the tr~ger switch actuator 184 and as such, the fastening tool cannot be activated even when the trigger 158 (Figure 1) is positioned in the activated position 162 (Figure 2) and the contact trip mechanism 98 is moved to the retracted position 100 (Figure 1 a).
To that end, tfte lockout switch 170 (Figure 1 ) can completely prevent operation of the fastening tool 10 (Figure 1) when placed in the lockout position 174 (Figure 15).
[~052j The trigger switch 164 can be any suitable type of switch including, but not limited to, a micro switch. The tr~ger switch 164 can include a trigger switch body 182 and the trigger switch actuator 184. it can be appreciated that the trigger actuation member 166 can contact the trigger sw~ch body 182 and that this contact does not operate to activate the tr~ger switch 164. Rather, actuation of the trigger switch 164 is effecfed through contact between the trigger actuation member and the trigger switch actuator 184 andlor an actuator lever 188 that can pivot to make contact with the trig~r switch actuator. While the part~uiar trigger switch 164 illustrated u8iizes a translating member for the trigger switch actuator 184, those of ordinary skill in the art will appreciate that other switch conl5guratians, including those that use a pivoting ever to push a translating member, may be readily Attorney Docket No. 0275A-000974 substituted for that which is illustrated herein. By way of the above example, tfie trigger block 114 can deflect the trigget actuation member 166 from the trigger switch actuator 184 when the trigger block 114 is in the blocked position 120 {Figure 17), but the trigger actuation member 166 may sill contact the trigger switch body 182.
j005~3j Those skilled in the art can now appreaate from the foregoing description that the broad teachings of the present inven~on can be implemented in a variety of forms. Therefore, while this invention has been described in connection with par~cutar examples thereof, the true scope of the invention should not be so limited because other modiFcations will become apparent to the skilled practitioner upon a study of the drawings, the specification and the following claims.
Claims (8)
1. A fastening tool for inserting a fastener into a work-piece, the fastening tool comprising;
a contact trip mechanism having a trigger block, said contact trip mechanism moveable between an extended position and a retracted position:
a slider member connected to said digger block;
a fink member adjustably coupled to said slider member; and an actuator assembly including an actuator pin movable between a first position and a second position, said pin in said first position decoupling said slider member and said link member and holding said trigger block in a blocked position.
a contact trip mechanism having a trigger block, said contact trip mechanism moveable between an extended position and a retracted position:
a slider member connected to said digger block;
a fink member adjustably coupled to said slider member; and an actuator assembly including an actuator pin movable between a first position and a second position, said pin in said first position decoupling said slider member and said link member and holding said trigger block in a blocked position.
2. The fastening tool of Claim 1 wherein said trigger block is in an unblocked position when said contact trip mechanism is in said retraced position.
3. The fastening toot of Claim 7 wherein said trigger block is in a blocked position when said contact trip mechanism is in sad extends position.
4. The fastening tool of Claim 1 further comprising a carrier member that connects said trigger block to said slider member.
5. The fastening toot of Claim 4 further comprising a pin formed on said slider member coupled to an aperture formed on said carrier member, said slider member pivots relative to said link member when said actuator pin decouples said link member and said slider member.
6. The fastening toot of Claim 1 further comprising an adjusting lever connected to said link member wherein said adjusting lever can move said link member to a plurality of positions relative to said slider member.
7. The fastening tool of Claim 1 wherein said link member is coupled to said slider member at a lower position relative to said slider member to effectively elongate said contact trip mechanism.
8. The fastening tool of Claim 6, wherein said effective elongation of said contact trip mechanism adjusts a depth at which the fastening tool inserts the fastener.
8. A fastening tool having an exterior housing, the fastening tool comprising:
a nosepiece;
a contact trip mechanism including a contact member coupled to said nosepiece, a link member associated with said nosepiece, and a slider member associated with a trigger switch, said link member adjustably coupled to said slider member, and an actuator mechanism connected to the exterior housing, said actuator mechanism being selectively operable to both uncouple said link member and said slider member and to permit a length of the contact trip mechanism to be adjusted and to inhibit movement of said slider member in a direction that would actuate said trigger switch.
10. The fastening tool of Claim 9 further comprising an adjusting lever connected to said link member wherein said adjusting lever can move said link member to a plurality of positions relative to said slider member.
11. The fastening tool of Claim 9 wherein said link member is coupled to said slider member at a lower position relative to said slider member to effectively elongate said contact trip mechanism.
12. The fastening tool of Claim 11, wherein said effective elongation of said contact trip mechanism adjusts a depth at which the fastening tool inserts the fastener.
13. The fastening tool of Claim 9 wherein said uncoupling of said link member and said slider member includes pivoting said slider member away from said link member.
14. A fastening tool comprising:
a trigger switch having a closed position and an open position, said trigger switch in said closed position executes a driver sequence;
an actuation member movable between a first position and a second position, said first position contacting said trigger switch and moving said trigger switch to said closed position;
a lockout switch connected to said actuation member having a locked-out position and an operational position, said locked-out position holds said actuation member away from said trigger switch.
15. The fastening tool of Claim 14 wherein said trigger switch includes a trigger switch body and a trigger switch actuator and wherein trigger switch actuator in said closed position executes a driver sequence.
i6. The fastening tool of Claim 15 wherein said lockout switch holds said actuation member away from said trigger switch actuator in said lockout position.
17. The fastening tool of Claim 14 further comprising a contact trip mechanism having a trigger block, said contact trip mechanism moveable to a retracted position and an extended position.
18. The fastening tool of Claim 17 wherein said trigger block is in a blocked position when said contact trip mechanism is in said extended position and said trigger block is in an unblocked position when said contact trip mechanism is in said retracted position.
19. The fastening toot of claim 18 wherein the contact trip mechanism in said retracted position and said lockout switch in said operational position permits said actuation member to contact said trigger switch.
20. A fastening tool comprising:
a trigger;
a trigger switch;
a lockout switch that is operable in a locked-out condition and an operational condition; and an actuation member, wherein placement of said lockout switch in said operational position permits said actuation member to be moved to actuate said switch in response to retraction of the trigger and wherein placement of said lockout device in the lockout position positions the actuation member out of alignment with at least one of the trigger and the trigger switch so that the actuation member cannot actuate the trigger switch in response to said retraction of the trigger.
21. The fastening toot of Claim 20 wherein said trigger switch includes a trigger switch body and a trigger switch actuator and wherein trigger switch actuator in said closed position executes a driver sequence.
22. The fastening tool of Claim 21 wherein said lockout switch holds said actuation member away from said trigger switch actuator in said lockout position.
23. The fastening tool of Claim 20 further comprising a contact trip mechanism having a trigger block, said contact trip mechanism moveable to a retracted position and an extended position.
24. The fastening tool of Claim 23 wherein said trigger block is in a blocked position when said contact trip mechanism is in said extended position and said trigger block is in an unblocked position when said contact trip mechanism is in said retracted position.
25. The fastening tool of Claim 24 wherein the contact trip mechanism in said retracted position and said lockout switch in said operational position permits said actuation member to contact said trigger switch.
26. A method of adjusting a depth at which a fastening tool drives a fastener into a work-piece, the method comprising:
providing a contact trip mechanism having a link member and a slider member;
decoupling said link member from said slider member;
holding said contact trip mechanism in an extended position; and moving said link member relative to said slider member.
27. The method of Claim 26 further comprising coupling said link member to said slider member 28. The method of Claim 26 wherein said moving said link member relative to said slider member effectively elongates the contact trip mechanism.
29. The method Claim 26 wherein said link member relative to said slider member includes pivoting said slider member away from said link member.
8. A fastening tool having an exterior housing, the fastening tool comprising:
a nosepiece;
a contact trip mechanism including a contact member coupled to said nosepiece, a link member associated with said nosepiece, and a slider member associated with a trigger switch, said link member adjustably coupled to said slider member, and an actuator mechanism connected to the exterior housing, said actuator mechanism being selectively operable to both uncouple said link member and said slider member and to permit a length of the contact trip mechanism to be adjusted and to inhibit movement of said slider member in a direction that would actuate said trigger switch.
10. The fastening tool of Claim 9 further comprising an adjusting lever connected to said link member wherein said adjusting lever can move said link member to a plurality of positions relative to said slider member.
11. The fastening tool of Claim 9 wherein said link member is coupled to said slider member at a lower position relative to said slider member to effectively elongate said contact trip mechanism.
12. The fastening tool of Claim 11, wherein said effective elongation of said contact trip mechanism adjusts a depth at which the fastening tool inserts the fastener.
13. The fastening tool of Claim 9 wherein said uncoupling of said link member and said slider member includes pivoting said slider member away from said link member.
14. A fastening tool comprising:
a trigger switch having a closed position and an open position, said trigger switch in said closed position executes a driver sequence;
an actuation member movable between a first position and a second position, said first position contacting said trigger switch and moving said trigger switch to said closed position;
a lockout switch connected to said actuation member having a locked-out position and an operational position, said locked-out position holds said actuation member away from said trigger switch.
15. The fastening tool of Claim 14 wherein said trigger switch includes a trigger switch body and a trigger switch actuator and wherein trigger switch actuator in said closed position executes a driver sequence.
i6. The fastening tool of Claim 15 wherein said lockout switch holds said actuation member away from said trigger switch actuator in said lockout position.
17. The fastening tool of Claim 14 further comprising a contact trip mechanism having a trigger block, said contact trip mechanism moveable to a retracted position and an extended position.
18. The fastening tool of Claim 17 wherein said trigger block is in a blocked position when said contact trip mechanism is in said extended position and said trigger block is in an unblocked position when said contact trip mechanism is in said retracted position.
19. The fastening toot of claim 18 wherein the contact trip mechanism in said retracted position and said lockout switch in said operational position permits said actuation member to contact said trigger switch.
20. A fastening tool comprising:
a trigger;
a trigger switch;
a lockout switch that is operable in a locked-out condition and an operational condition; and an actuation member, wherein placement of said lockout switch in said operational position permits said actuation member to be moved to actuate said switch in response to retraction of the trigger and wherein placement of said lockout device in the lockout position positions the actuation member out of alignment with at least one of the trigger and the trigger switch so that the actuation member cannot actuate the trigger switch in response to said retraction of the trigger.
21. The fastening toot of Claim 20 wherein said trigger switch includes a trigger switch body and a trigger switch actuator and wherein trigger switch actuator in said closed position executes a driver sequence.
22. The fastening tool of Claim 21 wherein said lockout switch holds said actuation member away from said trigger switch actuator in said lockout position.
23. The fastening tool of Claim 20 further comprising a contact trip mechanism having a trigger block, said contact trip mechanism moveable to a retracted position and an extended position.
24. The fastening tool of Claim 23 wherein said trigger block is in a blocked position when said contact trip mechanism is in said extended position and said trigger block is in an unblocked position when said contact trip mechanism is in said retracted position.
25. The fastening tool of Claim 24 wherein the contact trip mechanism in said retracted position and said lockout switch in said operational position permits said actuation member to contact said trigger switch.
26. A method of adjusting a depth at which a fastening tool drives a fastener into a work-piece, the method comprising:
providing a contact trip mechanism having a link member and a slider member;
decoupling said link member from said slider member;
holding said contact trip mechanism in an extended position; and moving said link member relative to said slider member.
27. The method of Claim 26 further comprising coupling said link member to said slider member 28. The method of Claim 26 wherein said moving said link member relative to said slider member effectively elongates the contact trip mechanism.
29. The method Claim 26 wherein said link member relative to said slider member includes pivoting said slider member away from said link member.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10/978,868 | 2004-10-29 | ||
| US10/978,868 US20060091177A1 (en) | 2004-10-29 | 2004-10-29 | Operational lock and depth adjustment for fastening tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2524765A1 true CA2524765A1 (en) | 2006-04-29 |
Family
ID=35462557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002524765A Abandoned CA2524765A1 (en) | 2004-10-29 | 2005-10-27 | Operational lock and depth adjustment for fastening tool |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20060091177A1 (en) |
| EP (1) | EP1652625A3 (en) |
| CN (1) | CN1775482A (en) |
| AU (1) | AU2005225165A1 (en) |
| CA (1) | CA2524765A1 (en) |
| NZ (2) | NZ543228A (en) |
Cited By (1)
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|---|---|---|---|---|
| US20220080571A1 (en) * | 2012-05-31 | 2022-03-17 | Black & Decker Inc. | Power Tool Having Latched Pusher Assembly |
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| TWI273955B (en) * | 2004-02-20 | 2007-02-21 | Black & Decker Inc | Dual mode pneumatic fastener actuation mechanism |
| US7641089B2 (en) * | 2004-04-02 | 2010-01-05 | Black & Decker Inc. | Magazine assembly for nailer |
| US20060091176A1 (en) | 2004-10-29 | 2006-05-04 | Cannaliato Michael F | Cordless fastening tool nosepiece with integrated contact trip and magazine feed |
| US8550324B2 (en) * | 2006-05-23 | 2013-10-08 | Black & Decker Inc. | Depth adjustment for fastening tool |
| JP4664240B2 (en) * | 2006-06-12 | 2011-04-06 | 株式会社マキタ | Driving tool |
| US7537145B2 (en) | 2007-02-01 | 2009-05-26 | Black & Decker Inc. | Multistage solenoid fastening device |
| US8931676B2 (en) | 2007-08-27 | 2015-01-13 | Black & Decker Inc. | Nailer having mechanism for pre-positioning nail |
| GB0809868D0 (en) * | 2008-05-30 | 2008-07-09 | Black & Decker Inc | Fastener driving tool |
| DE602009001046D1 (en) * | 2008-05-30 | 2011-05-26 | Black & Decker Inc | Tool for driving fasteners |
| EP2514568B1 (en) * | 2008-05-30 | 2013-10-02 | Black & Decker Inc. | Fastener driving tool |
| US8127974B2 (en) * | 2009-02-25 | 2012-03-06 | Huading Zhang | Electrical motor driven nail gun |
| US8042717B2 (en) * | 2009-04-13 | 2011-10-25 | Stanley Fastening Systems, Lp | Fastener driving device with contact trip having an electrical actuator |
| US8746526B2 (en) * | 2009-09-15 | 2014-06-10 | Robert Bosch Gmbh | Fastener driver with blank fire lockout |
| US8146788B2 (en) * | 2009-12-04 | 2012-04-03 | Robert Bosch Gmbh | Fastening tool with releasable work contact element |
| FR2993810B1 (en) * | 2012-07-25 | 2014-07-11 | Illinois Tool Works | INDIRECT SHOOTING FIXING TOOL, WITH ANTI-SHRINKING RELIEF HOLDER |
| DE102012214694A1 (en) * | 2012-08-17 | 2014-02-20 | Hilti Aktiengesellschaft | Tacker with safety lock |
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| CA2985110C (en) * | 2016-11-09 | 2023-05-09 | Tti (Macao Commercial Offshore) Limited | Jam release and lifter mechanism for gas spring fastener driver |
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-
2004
- 2004-10-29 US US10/978,868 patent/US20060091177A1/en not_active Abandoned
-
2005
- 2005-10-25 AU AU2005225165A patent/AU2005225165A1/en not_active Abandoned
- 2005-10-27 CA CA002524765A patent/CA2524765A1/en not_active Abandoned
- 2005-10-27 NZ NZ543228A patent/NZ543228A/en unknown
- 2005-10-27 NZ NZ554571A patent/NZ554571A/en unknown
- 2005-10-28 EP EP05023609A patent/EP1652625A3/en not_active Withdrawn
- 2005-10-31 CN CN200510131587.0A patent/CN1775482A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220080571A1 (en) * | 2012-05-31 | 2022-03-17 | Black & Decker Inc. | Power Tool Having Latched Pusher Assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1652625A3 (en) | 2010-11-10 |
| CN1775482A (en) | 2006-05-24 |
| EP1652625A2 (en) | 2006-05-03 |
| NZ543228A (en) | 2007-07-27 |
| NZ554571A (en) | 2008-06-30 |
| US20060091177A1 (en) | 2006-05-04 |
| AU2005225165A1 (en) | 2006-05-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |