US20030071425A1 - Anti-slip type electric drill chuck - Google Patents
Anti-slip type electric drill chuck Download PDFInfo
- Publication number
- US20030071425A1 US20030071425A1 US09/974,527 US97452701A US2003071425A1 US 20030071425 A1 US20030071425 A1 US 20030071425A1 US 97452701 A US97452701 A US 97452701A US 2003071425 A1 US2003071425 A1 US 2003071425A1
- Authority
- US
- United States
- Prior art keywords
- sleeve
- electric drill
- type electric
- drill chuck
- slip type
- 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.)
- Granted
Links
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
- B23B31/123—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis with locking arrangements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B31/00—Chucks; Expansion mandrels; Adaptations thereof for remote control
- B23B31/02—Chucks
- B23B31/10—Chucks characterised by the retaining or gripping devices or their immediate operating means
- B23B31/12—Chucks with simultaneously-acting jaws, whether or not also individually adjustable
- B23B31/1207—Chucks with simultaneously-acting jaws, whether or not also individually adjustable moving obliquely to the axis of the chuck in a plane containing this axis
- B23B31/1238—Jaws movement actuated by a nut with conical screw-thread
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S279/00—Chucks or sockets
- Y10S279/902—Keyless type socket
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/17—Socket type
- Y10T279/17615—Obliquely guided reciprocating jaws
- Y10T279/17623—Threaded sleeve and jaw
- Y10T279/17632—Conical sleeve
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/32—Means to prevent jaw loosening
Definitions
- the invention relates to a chuck of an electric drilling tool, more particular to an anti-slip type electric drill chuck.
- a conventional electric drill chuck structure generally has a body connected to a rotary shaft of a motor.
- the motor is externally provided with an adjusting housing for local rotation.
- the body has a plurality of slanting pawls annularly disposed thereon. The user can adjust the adjusting housing with his/her hand to control the advancement or retraction of the pawls in an oblique direction to thereby clamp or release a drill head.
- Such a mechanism of using the hand to manipulate of the adjusting housing so as to control advancement or retraction of the pawls may, due to factors such as vibration of the drill head, torque, resistance on drill surface, etc. during the drilling operation, cause the engagement between the pawls and the drill head to become loosened so that it is necessary to stop the machine and lock the drill head again. Otherwise, the drill head will deviate and is likely to be damaged. The drill surface is also likely to be damaged.
- the primary object of the invention is to provide an anti-slip type electric drill chuck, in which a front housing sleeve of a chuck unit is rotated by hand to control the chuck unit to clamp or release a tool such as drill head.
- a front housing sleeve of a chuck unit is rotated by hand to control the chuck unit to clamp or release a tool such as drill head.
- the chuck unit clamps the tool during operation, the chuck can prevent slippage of the drill head due to counteractions of vibration, torque, resistance, etc., resulting from the drilling operation.
- an anti-slip type electric drill chuck of the present invention mainly includes a body which is obliquely provided with three pawls for clamping a drill head.
- the outer surface of one end of the three pawls is provided with a threaded surface for engaging a tapered threaded hole in a bearing nut, which has an outer end with teeth, an end portion provided with a ball ring.
- a check nut protective sleeve encloses the ball ring and bearing nut, and has elastic pointed portions engage the teeth.
- a drive annular block engages the inner wall of the bearing nut.
- a front housing sleeve engages the drive annular block and surrounds the aforesaid components.
- FIG. 1 is an exploded perspective view of the present invention
- FIG. 2 is an elevation view of the check nut protective sleeve of the invention and the relevant construction in assembly;
- FIG. 3 is a sectional view of the check nut protective sleeve of the invention and the relevant construction in assembly;
- FIG. 4 is a sectional view of the present invention in assembly
- FIG. 5A is a sectional view taken along line 5 - 5 of FIG. 4, showing the operation of the invention in the arrow indicated;
- FIG. 5B is a sectional view taken along line 5 - 5 of FIG. 4, showing the operation of the invention in the arrow indicated;
- FIG. 5C is a sectional view taken along line 5 - 5 of FIG. 4, showing the operation of the invention in the arrow indicated;
- FIG. 6 is a cross-sectional view in the same direction of FIG. 5C, showing the second embodiment of the invention.
- FIG. 7 is a sectional view of the third embodiment of the invention.
- FIG. 8 is a sectional view of the fourth embodiment of the invention.
- FIG. 9 is a sectional view of the fifth embodiment of the invention.
- FIG. 10 is a perspective view of the drive annular block of the fifth embodiment of the invention.
- the chuck according to the present invention includes a body 20 , a bearing nut 40 , a check nut protective sleeve 50 , a drive annular block 60 , a front housing sleeve 70 , a tool sleeve 80 , and a rear housing sleeve 90 .
- the body 20 has one end connected to a transmission shaft of an electric drill motor.
- the body 20 is provided with a first ring 21 and a second ring 22 projecting from the outer periphery of a shaft securing end thereof.
- the center of the body 20 is provided with a shaft hole 23 .
- the periphery of the seat body is formed with three equidistantly spaced guide grooves 24 .
- One end of the three guide grooves 24 passes through the second ring 22 .
- the other end extends into the shaft hole 23 .
- Three pawls 30 respectively extend into the guide grooves 24 from exposed holes formed by the three guide grooves 24 in the second ring 22 .
- the pawl 30 has a threaded surface 31 exposed from the body 20 , and has an inner end portion extending into the shaft hole 23 to form a clamping end 32 for clamping a tool such as a drill head, reamer, screwdriver, tapping cutter, etc.
- the bearing nut 40 is sleeved on the body 20 , and is centrally provided with a tapered threaded hole 41 for engaging the threaded surface 31 of the pawl 30 .
- the outer periphery of the bearing nut 40 has a surface with different diameters, with a juncture forming an oblique wedged surface 46 .
- the surface with the smaller diameter is provided with teeth 42 .
- the end portion of the bearing nut 40 that corresponds to the second ring 22 of the body 20 is fitted with a ball ring 43 and a heat-treated washer 45 .
- the check nut protective sleeve 50 includes a tooth fitting ring 502 and a packing ring 501 .
- the tooth fitting ring 502 is in the form of an annular sleeve fitted on the bearing nut 40 and has a ring end provided with a plurality of bent openings 52 corresponding to the teeth 42 of the bearing nut 40 such that one side of the respective opening 52 forms an elastic piece 53 .
- An open end portion of the elastic piece 53 is recessed toward the center of the tooth fitting ring 502 so as to form a pointed portion 54 .
- the pointed portion 54 can engage the teeth 42 .
- the packing ring 501 is disposed at the ball ring 43 and washer 45 of the bearing nut 40 to urge against the end of the tooth fitting ring 502 .
- the tooth fitting ring 502 is also formed with an oblique wedged surface 55 .
- the two wedged surfaces 46 , 55 abut against each other to be thereby positioned so as to further prevent loosening or slippage of the tooth fitting ring 502 .
- the check nut protective sleeve 50 encloses the bearing nut 40 and ball ring 43 as an assembly disposed on the body 20 such that the exterior of the packing ring 501 surrounds the second ring 22 .
- the drive annular block 60 has one end fitted in the end edge of the bearing nut 40 .
- the outer edge of the drive annular block 60 is provided with a plurality of protrusions 61 .
- the inner periphery of the end portion of the bearing nut 40 is provided with a plurality of recesses 44 for retaining the protrusions 61 .
- the other end portion of the drive annular block 60 is exposed from the body 20 .
- the front housing sleeve 70 is a hollow sleeve with two open ends, and is fitted at the end portion of the body 20 to enclose the drive annular block 60 , check nut protective sleeve 50 and bearing nut 40 .
- the inner periphery of the front housing sleeve 70 is annularly provided with a plurality of recesses 72 for retaining protrusions 61 of the drive annular block 60 such that when the front housing sleeve 70 is turned by hand, the bearing nut 40 can be brought to rotate therewith.
- the tool sleeve 80 is tightly fitted at the end portion of the body 20 to limit the front housing sleeve 70 .
- the center thereof is provided with an extension hole 81 for extension of a tool, such as drill head 100 , therethrough.
- the outer edge thereof is provided with a polygonal hole 82 into which a workpiece, such as a sleeve, can be fitted directly.
- the inner edge of the hole is provided with a semi-curved groove 821 such that a securing ball of the sleeve can be insertably retained therein to thereby position the sleeve.
- the inner edge of the tool sleeve 80 is annularly provided with an abutting protrusion 83 for tightly abutting against an abutting groove 25 at the end portion of the body 20 so that the tool sleeve 80 will not become disengaged.
- the rear housing sleeve 90 is a sleeve member with a substantially U-shaped cross-section, and is fitted on the first ring 21 of the shaft securing end of body 20 .
- the rear housing sleeve 90 is internally provided with a projecting retaining portion 91 .
- the first ring 21 is provided with a groove 211 for retaining the retaining portion 91 .
- the end portion of the drill head 100 is inserted into the extension hole 81 in the tool sleeve 80 and further into the shaft hole 23 in the body 20 .
- the front housing sleeve 70 is rotated by hand to drive the drive annular block 60 , bearing nut 40 and check nut protective sleeve 50 to rotate.
- the pawls 30 are caused to displace in the direction of the drill head 100 .
- the user can then judge that the front housing sleeve 70 and bearing nut 40 have been rotated to a critical limit and can therefore stop turning the front housing sleeve 70 .
- the pointed portion 54 of check nut protective sleeve 50 is still retained in teeth 42 of bearing nut 40 (as shown in FIG. 5C).
- the front housing sleeve 70 is rotated in a reverse direction. After turning the same very slightly, since the check nut protective sleeve 50 is still pressed by the ball ring 43 and washer 45 , there is still the clicking sound due to friction between the teeth when the bearing nut 40 is turned. But when the bearing nut 40 starts driving the pawls 30 to retract, the ball ring 43 and washer 45 will release the pressure on the packing ring 501 of check nut protective sleeve 50 and return to the state wherein the two are loosely engaged. At this time, since the check nut protective sleeve 50 has the pointed portion 54 thereof engaging the teeth 42 , it can rotate with the bearing nut 40 until the pawls 30 are completely retracted from the drill head 100 .
- the polygonal hole 82 is adapted to receive workpieces, such as sleeves.
- the root bottom portion between adjacent teeth 42 of bearing nut 40 is in a pointed shape; therefore, the pointed portion 54 of tooth fitting ring 502 is also in a pointed shape.
- the root bottom portion between adjacent teeth 42 of bearing nut 40 is curved; therefore, the pointed portion 54 ′ of tooth fitting ring 502 is also in a curved shape so as to be engageable therewith.
- the third embodiment of this invention does not include a tool sleeve 80 , and a recess 26 is formed at the head end of body 20 .
- the front housing sleeve 70 is provided with a projecting block 73 for insertion into the recess 26 to thereby position the front housing sleeve 70 and the body 20 .
- the head end of the body 20 is provided with a taper portion 27 that tapers toward the open end.
- the open end of the body 20 is provided with an inverted-angle stop portion 28 .
- the inner edge of the front housing sleeve 70 near the open end thereof is provided with a taper surface that matches and engages the taper portion 27 , with the stop portion 28 of the body 20 stopping the open end of the front housing sleeve 70 to thereby position the front housing sleeve 70 and the body 20 .
- the protrusion 61 of the drive annular block 60 is provided with a retaining groove 62 .
- the groove 72 of the front housing sleeve 70 is provided with a retaining block 73 corresponding to the retaining groove 62 for engaging the retaining groove 62 so as to position the front housing sleeve 70 on the drive annular block 60 with no likelihood of slippage.
Abstract
Description
- (a) Field of the Invention
- The invention relates to a chuck of an electric drilling tool, more particular to an anti-slip type electric drill chuck.
- (b) Description of the Prior Art
- A conventional electric drill chuck structure generally has a body connected to a rotary shaft of a motor. The motor is externally provided with an adjusting housing for local rotation. The body has a plurality of slanting pawls annularly disposed thereon. The user can adjust the adjusting housing with his/her hand to control the advancement or retraction of the pawls in an oblique direction to thereby clamp or release a drill head.
- Such a mechanism of using the hand to manipulate of the adjusting housing so as to control advancement or retraction of the pawls may, due to factors such as vibration of the drill head, torque, resistance on drill surface, etc. during the drilling operation, cause the engagement between the pawls and the drill head to become loosened so that it is necessary to stop the machine and lock the drill head again. Otherwise, the drill head will deviate and is likely to be damaged. The drill surface is also likely to be damaged.
- The primary object of the invention is to provide an anti-slip type electric drill chuck, in which a front housing sleeve of a chuck unit is rotated by hand to control the chuck unit to clamp or release a tool such as drill head. When the chuck unit clamps the tool during operation, the chuck can prevent slippage of the drill head due to counteractions of vibration, torque, resistance, etc., resulting from the drilling operation.
- In order to achieve the abovementioned object, an anti-slip type electric drill chuck of the present invention mainly includes a body which is obliquely provided with three pawls for clamping a drill head. The outer surface of one end of the three pawls is provided with a threaded surface for engaging a tapered threaded hole in a bearing nut, which has an outer end with teeth, an end portion provided with a ball ring. A check nut protective sleeve encloses the ball ring and bearing nut, and has elastic pointed portions engage the teeth. A drive annular block engages the inner wall of the bearing nut. A front housing sleeve engages the drive annular block and surrounds the aforesaid components.
- The foregoing and other features and advantages of the present invention will be more clearly understood from the following detailed description and the accompanying drawings, in which,
- FIG. 1 is an exploded perspective view of the present invention;
- FIG. 2 is an elevation view of the check nut protective sleeve of the invention and the relevant construction in assembly;
- FIG. 3 is a sectional view of the check nut protective sleeve of the invention and the relevant construction in assembly;
- FIG. 4 is a sectional view of the present invention in assembly;
- FIG. 5A is a sectional view taken along line5-5 of FIG. 4, showing the operation of the invention in the arrow indicated;
- FIG. 5B is a sectional view taken along line5-5 of FIG. 4, showing the operation of the invention in the arrow indicated;
- FIG. 5C is a sectional view taken along line5-5 of FIG. 4, showing the operation of the invention in the arrow indicated;
- FIG. 6 is a cross-sectional view in the same direction of FIG. 5C, showing the second embodiment of the invention;
- FIG. 7 is a sectional view of the third embodiment of the invention;
- FIG. 8 is a sectional view of the fourth embodiment of the invention;
- FIG. 9 is a sectional view of the fifth embodiment of the invention; and
- FIG. 10 is a perspective view of the drive annular block of the fifth embodiment of the invention.
- Referring to FIGS. 1, 2,3 and 4, the chuck according to the present invention includes a
body 20, abearing nut 40, a check nutprotective sleeve 50, a driveannular block 60, afront housing sleeve 70, atool sleeve 80, and arear housing sleeve 90. - The
body 20 has one end connected to a transmission shaft of an electric drill motor. Thebody 20 is provided with afirst ring 21 and asecond ring 22 projecting from the outer periphery of a shaft securing end thereof. The center of thebody 20 is provided with ashaft hole 23. The periphery of the seat body is formed with three equidistantly spacedguide grooves 24. One end of the three guide grooves 24 passes through thesecond ring 22. The other end extends into theshaft hole 23. Threepawls 30 respectively extend into theguide grooves 24 from exposed holes formed by the threeguide grooves 24 in thesecond ring 22. Thepawl 30 has a threadedsurface 31 exposed from thebody 20, and has an inner end portion extending into theshaft hole 23 to form a clampingend 32 for clamping a tool such as a drill head, reamer, screwdriver, tapping cutter, etc. - The
bearing nut 40 is sleeved on thebody 20, and is centrally provided with a tapered threadedhole 41 for engaging the threadedsurface 31 of thepawl 30. The outer periphery of thebearing nut 40 has a surface with different diameters, with a juncture forming anoblique wedged surface 46. The surface with the smaller diameter is provided withteeth 42. The end portion of thebearing nut 40 that corresponds to thesecond ring 22 of thebody 20 is fitted with aball ring 43 and a heat-treatedwasher 45. - The check nut
protective sleeve 50 includes atooth fitting ring 502 and apacking ring 501. Thetooth fitting ring 502 is in the form of an annular sleeve fitted on thebearing nut 40 and has a ring end provided with a plurality ofbent openings 52 corresponding to theteeth 42 of thebearing nut 40 such that one side of the respective opening 52 forms anelastic piece 53. An open end portion of theelastic piece 53 is recessed toward the center of the tooth fittingring 502 so as to form apointed portion 54. Thepointed portion 54 can engage theteeth 42. Thepacking ring 501 is disposed at theball ring 43 and washer 45 of thebearing nut 40 to urge against the end of thetooth fitting ring 502. Corresponding to thewedged surface 46 of thebearing nut 40, thetooth fitting ring 502 is also formed with anoblique wedged surface 55. The twowedged surfaces tooth fitting ring 502. The check nutprotective sleeve 50 encloses thebearing nut 40 andball ring 43 as an assembly disposed on thebody 20 such that the exterior of thepacking ring 501 surrounds thesecond ring 22. - The drive
annular block 60 has one end fitted in the end edge of thebearing nut 40. The outer edge of the driveannular block 60 is provided with a plurality ofprotrusions 61. The inner periphery of the end portion of thebearing nut 40 is provided with a plurality ofrecesses 44 for retaining theprotrusions 61. The other end portion of the driveannular block 60 is exposed from thebody 20. Thefront housing sleeve 70 is a hollow sleeve with two open ends, and is fitted at the end portion of thebody 20 to enclose the driveannular block 60, check nutprotective sleeve 50 and bearingnut 40. The inner periphery of thefront housing sleeve 70 is annularly provided with a plurality ofrecesses 72 for retainingprotrusions 61 of the driveannular block 60 such that when thefront housing sleeve 70 is turned by hand, thebearing nut 40 can be brought to rotate therewith. - The
tool sleeve 80 is tightly fitted at the end portion of thebody 20 to limit thefront housing sleeve 70. The center thereof is provided with anextension hole 81 for extension of a tool, such asdrill head 100, therethrough. The outer edge thereof is provided with apolygonal hole 82 into which a workpiece, such as a sleeve, can be fitted directly. The inner edge of the hole is provided with asemi-curved groove 821 such that a securing ball of the sleeve can be insertably retained therein to thereby position the sleeve. The inner edge of thetool sleeve 80 is annularly provided with an abuttingprotrusion 83 for tightly abutting against an abuttinggroove 25 at the end portion of thebody 20 so that thetool sleeve 80 will not become disengaged. - The
rear housing sleeve 90 is a sleeve member with a substantially U-shaped cross-section, and is fitted on thefirst ring 21 of the shaft securing end ofbody 20. Therear housing sleeve 90 is internally provided with a projecting retainingportion 91. Thefirst ring 21 is provided with agroove 211 for retaining the retainingportion 91. - The operation of the present invention will be described hereinafter with reference to FIGS. 2 and 5A.
- If it is desired to lock the
drill head 100 tight, the end portion of thedrill head 100 is inserted into theextension hole 81 in thetool sleeve 80 and further into theshaft hole 23 in thebody 20. Thefront housing sleeve 70 is rotated by hand to drive the driveannular block 60, bearingnut 40 and check nutprotective sleeve 50 to rotate. At the same time, by means of the tapered threadedhole 41 in bearingnut 40, thepawls 30 are caused to displace in the direction of thedrill head 100. - When the clamping ends32 of the
pawls 30 engage thedrill head 100, theball ring 43 andwasher 45 at the end portion of bearingnut 40 will be tightly pressing against thepacking ring 501 of check nutprotective sleeve 50. At this time, the pressed check nutprotective sleeve 50 will not be able to rotate with bearingnut 40. If the operation turns thefront housing sleeve 70 very slightly, theteeth 42 on bearingnut 40 will push away the pointedportion 54 of theelastic piece 53 of check nut protective sleeve 50 (as shown in FIG. 5B), and a clicking sound of engagement between teeth will be heard. The user can then judge that thefront housing sleeve 70 and bearingnut 40 have been rotated to a critical limit and can therefore stop turning thefront housing sleeve 70. The pointedportion 54 of check nutprotective sleeve 50 is still retained inteeth 42 of bearing nut 40 (as shown in FIG. 5C). - It is noted that when the
drill head 100 is performing a drilling operation, vibration, torque, resistance, etc., will occur. However, since the pointedportion 54 of check nutprotective sleeve 50 of the present invention engages theteeth 42 of bearingnut 40, and since theball ring 43 causes thepacking ring 501 of check nutprotective sleeve 50 to press tightly against thesecond ring 22 ofbody 20 so that when check nutprotective sleeve 50 rotates with thebody 20, there is a limiting relationship with respect to the bearingnut 40 to keep the tapered threadedhole 41 of bearingnut 40 engaging thepawls 30 firmly, disengagement of drill head due to vibration, torque or resistance will not occur, and thedrill head 100 can perform the drilling operation stably. - When it is desired to remove the
drill head 100, thefront housing sleeve 70 is rotated in a reverse direction. After turning the same very slightly, since the check nutprotective sleeve 50 is still pressed by theball ring 43 andwasher 45, there is still the clicking sound due to friction between the teeth when the bearingnut 40 is turned. But when the bearingnut 40 starts driving thepawls 30 to retract, theball ring 43 andwasher 45 will release the pressure on thepacking ring 501 of check nutprotective sleeve 50 and return to the state wherein the two are loosely engaged. At this time, since the check nutprotective sleeve 50 has the pointedportion 54 thereof engaging theteeth 42, it can rotate with the bearingnut 40 until thepawls 30 are completely retracted from thedrill head 100. - In the
tool sleeve 80 shown in FIGS. 1 to 5C, thepolygonal hole 82 is adapted to receive workpieces, such as sleeves. - As shown in FIGS. 5A to5C, in the first embodiment, the root bottom portion between
adjacent teeth 42 of bearingnut 40 is in a pointed shape; therefore, the pointedportion 54 of toothfitting ring 502 is also in a pointed shape. In the second embodiment shown in FIG. 6, the root bottom portion betweenadjacent teeth 42 of bearingnut 40 is curved; therefore, the pointedportion 54′ of toothfitting ring 502 is also in a curved shape so as to be engageable therewith. - Referring to FIG. 7, the third embodiment of this invention does not include a
tool sleeve 80, and arecess 26 is formed at the head end ofbody 20. Thefront housing sleeve 70 is provided with a projectingblock 73 for insertion into therecess 26 to thereby position thefront housing sleeve 70 and thebody 20. - Referring to FIG. 8, which shows the fourth embodiment of this invention, the head end of the
body 20 is provided with ataper portion 27 that tapers toward the open end. The open end of thebody 20 is provided with an inverted-angle stop portion 28. The inner edge of thefront housing sleeve 70 near the open end thereof is provided with a taper surface that matches and engages thetaper portion 27, with thestop portion 28 of thebody 20 stopping the open end of thefront housing sleeve 70 to thereby position thefront housing sleeve 70 and thebody 20. - Referring to FIGS. 9 and 10, which show the fifth embodiment of this invention, the
protrusion 61 of the driveannular block 60 is provided with a retaininggroove 62. Thegroove 72 of thefront housing sleeve 70 is provided with a retainingblock 73 corresponding to the retaininggroove 62 for engaging the retaininggroove 62 so as to position thefront housing sleeve 70 on the driveannular block 60 with no likelihood of slippage.
Claims (17)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US09/974,527 US6554289B1 (en) | 2001-10-11 | 2001-10-11 | Anti-slip type electric drill chuck |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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US09/974,527 US6554289B1 (en) | 2001-10-11 | 2001-10-11 | Anti-slip type electric drill chuck |
Publications (2)
Publication Number | Publication Date |
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US20030071425A1 true US20030071425A1 (en) | 2003-04-17 |
US6554289B1 US6554289B1 (en) | 2003-04-29 |
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US09/974,527 Expired - Fee Related US6554289B1 (en) | 2001-10-11 | 2001-10-11 | Anti-slip type electric drill chuck |
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US (1) | US6554289B1 (en) |
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US20040135325A1 (en) * | 2002-11-18 | 2004-07-15 | Etablissements Amyot S.A. | Chuck with locking system |
US20050087937A1 (en) * | 2003-10-22 | 2005-04-28 | Wenhua Zhou | Lock type manually tightened chuck |
US20060027979A1 (en) * | 2004-08-03 | 2006-02-09 | Yang Gui M | Lockable chuck |
US20070052182A1 (en) * | 2005-09-02 | 2007-03-08 | Eugen Bordeianu | Locking chuck |
US20070069483A1 (en) * | 2005-05-18 | 2007-03-29 | Bordeianu Eugen A | Locking chuck |
US20140265163A1 (en) * | 2013-03-14 | 2014-09-18 | Apex Brands, Inc. | Locking chuck |
CN104625742A (en) * | 2015-01-22 | 2015-05-20 | 余姚市兴泰机械制造有限公司 | Threaded hole machining drilling machine |
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US20060185870A1 (en) * | 2005-02-18 | 2006-08-24 | Black & Decker Inc. | Drill chuck |
US20060186611A1 (en) * | 2005-02-18 | 2006-08-24 | Gehret Robert S | Non-slip reverse device for impacting-type chuck |
US20060186612A1 (en) * | 2005-02-18 | 2006-08-24 | Daniel Puzio | Dust cover for automatic chuck |
US7837200B2 (en) | 2005-07-01 | 2010-11-23 | Jacobs Chuck Manufacturing Company | Chuck |
US7637510B2 (en) * | 2005-10-12 | 2009-12-29 | Shandong Weida Machinery Company Limited | Chuck with gripping mechanism stop |
WO2008074204A1 (en) * | 2006-12-18 | 2008-06-26 | Zhejiang Sanou Machinery Co., Ltd. | A self-locking manual tightening drill chuck |
DE202009005187U1 (en) * | 2008-11-24 | 2009-10-29 | Zhejiang Sanou Machinery Co. Ltd., Taizhou | Keyless drill chuck with self-locking |
DE102015102241A1 (en) * | 2015-02-17 | 2016-08-18 | Röhm Gmbh | chuck |
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DE19907331A1 (en) * | 1999-02-20 | 2000-08-24 | Roehm Gmbh | Drill chuck |
US6182978B1 (en) * | 1999-08-11 | 2001-02-06 | Chun Chu Hsueh | Self locking device for power tool |
US6260856B1 (en) * | 1999-11-17 | 2001-07-17 | Power Tool Holders Incorporated | Locking chuck |
US6390481B1 (en) * | 2000-03-10 | 2002-05-21 | Power Tool Holders Incorporated | Locking chuck |
-
2001
- 2001-10-11 US US09/974,527 patent/US6554289B1/en not_active Expired - Fee Related
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040135325A1 (en) * | 2002-11-18 | 2004-07-15 | Etablissements Amyot S.A. | Chuck with locking system |
US7185895B2 (en) * | 2002-11-18 | 2007-03-06 | Etablissements Amyot, S.A. | Chuck with locking system |
US20050087937A1 (en) * | 2003-10-22 | 2005-04-28 | Wenhua Zhou | Lock type manually tightened chuck |
US20060027979A1 (en) * | 2004-08-03 | 2006-02-09 | Yang Gui M | Lockable chuck |
US20070069483A1 (en) * | 2005-05-18 | 2007-03-29 | Bordeianu Eugen A | Locking chuck |
US7708288B2 (en) * | 2005-05-18 | 2010-05-04 | Jacobs Chuck Manufacturing Company | Locking chuck |
US20070052182A1 (en) * | 2005-09-02 | 2007-03-08 | Eugen Bordeianu | Locking chuck |
US7527273B2 (en) * | 2005-09-02 | 2009-05-05 | Jacobs Chuck Manufacturing Company | Locking chuck |
US20140265163A1 (en) * | 2013-03-14 | 2014-09-18 | Apex Brands, Inc. | Locking chuck |
US10556276B2 (en) * | 2013-03-14 | 2020-02-11 | Apex Brands, Inc. | Locking chuck |
WO2015157931A1 (en) * | 2014-04-16 | 2015-10-22 | 威海达旺五金制品有限责任公司 | Drill chuck |
CN104625742A (en) * | 2015-01-22 | 2015-05-20 | 余姚市兴泰机械制造有限公司 | Threaded hole machining drilling machine |
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