US20060260199A1 - Chain operator housing - Google Patents
Chain operator housing Download PDFInfo
- Publication number
- US20060260199A1 US20060260199A1 US10/546,220 US54622006A US2006260199A1 US 20060260199 A1 US20060260199 A1 US 20060260199A1 US 54622006 A US54622006 A US 54622006A US 2006260199 A1 US2006260199 A1 US 2006260199A1
- Authority
- US
- United States
- Prior art keywords
- chain
- operator
- housing
- barrier member
- operator housing
- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G13/00—Chains
- F16G13/18—Chains having special overall characteristics
- F16G13/20—Chains having special overall characteristics stiff; Push-pull chains
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- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F11/00—Man-operated mechanisms for operating wings, including those which also operate the fastening
- E05F11/02—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights
- E05F11/04—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables
- E05F11/06—Man-operated mechanisms for operating wings, including those which also operate the fastening for wings in general, e.g. fanlights with cords, chains or cables in guide-channels
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05F—DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION; CHECKS FOR WINGS; WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05F15/00—Power-operated mechanisms for wings
- E05F15/60—Power-operated mechanisms for wings using electrical actuators
- E05F15/603—Power-operated mechanisms for wings using electrical actuators using rotary electromotors
- E05F15/611—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings
- E05F15/616—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms
- E05F15/619—Power-operated mechanisms for wings using electrical actuators using rotary electromotors for swinging wings operated by push-pull mechanisms using flexible or rigid rack-and-pinion arrangements
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/60—Suspension or transmission members; Accessories therefore
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/644—Flexible elongated pulling elements; Members cooperating with flexible elongated pulling elements
- E05Y2201/656—Chains
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/60—Suspension or transmission members; Accessories therefore
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/71—Toothed gearing
- E05Y2201/72—Planetary gearing
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2201/00—Constructional elements; Accessories therefore
- E05Y2201/60—Suspension or transmission members; Accessories therefore
- E05Y2201/622—Suspension or transmission members elements
- E05Y2201/71—Toothed gearing
- E05Y2201/722—Racks
- E05Y2201/724—Flexible
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05Y—INDEXING SCHEME RELATING TO HINGES OR OTHER SUSPENSION DEVICES FOR DOORS, WINDOWS OR WINGS AND DEVICES FOR MOVING WINGS INTO OPEN OR CLOSED POSITION, CHECKS FOR WINGS AND WING FITTINGS NOT OTHERWISE PROVIDED FOR, CONCERNED WITH THE FUNCTIONING OF THE WING
- E05Y2900/00—Application of doors, windows, wings or fittings thereof
- E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
- E05Y2900/13—Application of doors, windows, wings or fittings thereof for buildings or parts thereof characterised by the type of wing
- E05Y2900/148—Windows
Definitions
- the present invention relates to a chain operator housing, in particular for a manually operated chain operator for windows.
- Chain operators for windows are well known.
- Such chain operators generally comprise an operator chain housed in a magazine, a sprocket engaging the chain for driving it in and out of the magazine, thereby opening and closing a window, which is coupled to one end of the chain.
- the sprocket is integral with, or at least directly connected to, a coaxial gear wheel, which is coupled to a reduction mechanism.
- the reduction mechanism may be a worm gear, where the gear wheel constitutes the worm wheel, co-operating with the worm.
- the gear wheel could constitute the sun wheel of a planetary reduction gear.
- the sprocket and gears are mounted in a housing of which the chain magazine forms part.
- the housing comprises an exit opening through which the chain may be driven in and out by the sprocket so as to operate the window.
- chain operators are found in e.g. U.S. Pat. No. 4,521,993 and EP-A-624703.
- the exit opening provides a problem in the sense that it allows moist, dirt, salt etc. to enter into the chain operator, and affect the internal parts, such as the worm gear.
- these internal parts may corrode and eventually render the chain operator inoperable.
- an operator housing for a chain operator wherein said housing comprises a barrier member for subdividing the interior of said housing into a chain compartment, which is open to the exterior, and a drive compartment, which is substantially sealed from the exterior.
- the barrier member is an injection moulded plastic member.
- the barrier member comprises positioning means cooperating with said housing.
- the positioning means is devised such that in the direction of the coaxial arrangement of said sprocket and gear wheel said positioning means frictionally positions the barrier member.
- the barrier member further comprises a bearing surface against which the chain may slide.
- the housing comprises means for attaching a chain magazine.
- the housing comprises a substantially planar bottom wall and a protrusion extending externally over said bottom wall.
- the object is achieved by means of a chain operator for windows, said chain operator comprising an operator chain, a housing comprising an exit opening for said operator chain, and a sprocket for driving said chain in and out of said exit opening, and at least one gear wheel in fixed coaxial connection with said sprocket, wherein a barrier member is arranged within said housing, said barrier member comprising a barrier arranged between said exit opening and at least the major part of said gear wheel.
- the housing with the chain magazine has to be dimensioned to the longest foreseeable chain necessary for the different sized windows.
- the present invention solves this problem by providing a chain operator for windows, said chain operator comprising an operator chain, a housing comprising entry opening for said operator chain and an exit opening for said operator chain, and a sprocket for driving said chain in and out of said exit opening, wherein said housing comprises attachment means for attaching a chain magazine in communication with said entry opening.
- an operator housing for a chain operator said housing comprising an entry opening and an exit opening for an operator chain, wherein the housing comprises attachment means for attaching a chain magazine in communication with said entry opening.
- the third problem that the present invention sets out to solve is to provide a simple and cheap end stop for the chain.
- this is achieved by inserting in the rivet hole of the last link a stop element protruding over the link.
- a further problem with chain operators is their correct positioning in relation to the sash or frame on which they are to be mounted.
- This fourth problem is solved by providing an operator housing for a chain operator, wherein the housing comprises a substantially planar bottom wall and a protrusion extending externally over said bottom wall.
- a cylindrical wall extends internally from said bottom wall, said cylindrical wall portion defining a bore for holding a spindle on which a sprocket and gearwheel assembly is mounted.
- the cylindrical wall with the bore provides stable mounting of the spindle.
- Said stable mounting is improved in a further preferred embodiment where said bore extends at least partially through the substantially planar wall in a direction towards the external protrusion.
- a particularly stable mounting is obtained when, according to more preferred embodiment, said bore extends through the substantially planar wall into the external protrusion, because the use of the additional room in the external protrusion allows the spindle to be supported over a longer distance by said bore, than would otherwise be possible if the cylindrical wall alone should support the spindle.
- the protrusion is cylindrical.
- end surface of the cylindrical wall forms a bearing surface for the sprocket and gearwheel assembly.
- FIG. 1 shows an exploded view of the chain operator housing and chain magazine of the present invention
- FIG. 2 shows an exploded partial view of the chain operator housing and chain magazine according to the present invention
- FIG. 3 shows a top plan view of the operator housing and chain magazine with the respective lids and the barrier member removed
- FIG. 4 shows another exploded view of the operator housing and chain magazine, with bottom details visible, but without the chain,
- FIG. 5 a perspective view of the chain placed in the operator housing and chain magazine.
- FIG. 1 shows an exploded view of the chain operator of the invention.
- the operator comprises a cast metal housing 1 , e.g. of pressure die-cast zinc.
- the metal housing 1 has substantially planar bottom wall 2 . From the internal side of the bottom wall 2 an essentially cylindrical wall 3 extends.
- the cylindrical wall 3 defines a bore in which a spindle 4 is located in a fixed manner.
- the end surface 5 of the cylindrical wall 3 forms a bearing surface for a sprocket 6 , which is arranged on the spindle 4 .
- the sprocket 6 forms part of an assembly of the sprocket and a gearwheel 7 .
- the assembly is formed by joining two separate parts in a fixed mechanical relationship, but it is to be understood that they could just as well be integrally formed or that they could be separate parts interlocking in the rotational direction only.
- journal bearings 8 and 9 are located in cut-outs in the operator housing 1 . These bearings serve as bearings for the opposite ends 10 , 11 of a shaft carrying a worm 12 meshing with the gear wheel 7 .
- One of the opposite ends 11 is provided with a coupling means for an external manual operating device (not shown).
- the engagement means is a recess with hexagonal cross section, but the skilled person will appreciate that any other coupling means, such as a hook, an eyelet, a hexagonal head portion etc. could be used, as well of different cross sections of the recess and the head portion could be used.
- the operator housing 1 furthermore includes two openings for an operator chain 13 , viz. an entry opening 14 and an exit opening 15 , both best visible in the FIG. 2 .
- the exit opening 15 is open to the external environment, and thus poses a problem in the sense that pollutants may enter into the operator housing 1 through it.
- a barrier member 16 is provided between the exit opening 15 and the gearwheel 7 , preferably between the sprocket 6 and the gear wheel 7 .
- the barrier member is preferably a separate injection moulded, one-piece plastic part, e.g. of PBT, which may be inserted in the die-cast part of the operator housing 1 .
- the barrier member 16 is provided with a central opening 17 , through which the gear wheel 7 passes.
- the barrier member 16 further comprises a curved wall part 26 along which the operator chain 13 may slide during its motion. This lowers the friction as compared to friction against the die-cast zinc operator housing 1 .
- the barrier member 16 is fixed in respect to the operator housing 1 by means of tubular friction locking members 18 , held in corresponding grooves 19 in the operator housing 1 , in which they are inserted. Furthermore their length is adapted such that the barrier member 16 is furthermore positioned by means of a lid 20 covering the operator housing 1 , and the end walls of the respective grooves 19 .
- the lid 20 is preferably secured on the operator housing 1 by means of screws 21 .
- the curved wall part has protrusions 27 engaging corresponding holes 28 in the bottom wall 2 of the operator housing 1 .
- barrier member 16 does not form a perfect seal along the inside of the walls of the operator housing 1 and around the gear wheel 7 , protection against in particular corrosive salty mist entering through the exit opening 15 for the operator chain 13 .
- the internal side of the bottom wall 2 an essentially cylindrical wall 3 extends.
- the cylindrical wall 3 defines a bore in which a spindle 4 is located in a fixed manner.
- the expression bore is to be understood as a generally cylindrical hole in a broad sense.
- the spindle is not restricted to a prefabricated bore in which the spindle 4 is inserted.
- the spindle is secured in place during the die-casting, i.e. the zinc of the housing 1 is cast around one end part of the spindle 4 , thereby forming the bore.
- This end part of the spindle may be provided with grooves, so as to hold the spindle securely in the housing 1 .
- a protrusion 29 is formed on the outside of the bottom wall 2 of the housing 1 . This provides an additional thickness of the bottom wall 2 , allowing the spindle to be inserted deeper into the housing wall without penetrating it. Thus the spindle is supported over a longer distance by the cylindrical and the bottom part of the bore, than would be possible without the protrusion 29 .
- the protrusion 29 is cylindrical.
- the cylindrical protrusion 29 furthermore provides a convenient means for positioning the operator with respect to a window.
- the protrusion 29 serves dual functions.
- the spindle is furthermore supported by means of a corresponding cylindrical wall 40 with a central bore 41 for receiving the free end of the spindle 4 .
- the operator chain 13 is of a generally known construction with links riveted together by means of short cylindrical pins 22 in pairs of holes 23 along the length of the operator chain 13 .
- One end 24 of the chain 13 is preferably adapted for engagement with a part of window.
- a stop is provided at the other end of the operator chain 13 .
- this stop is a loosely held pin 25 , simply being placed in the last existing hole of the operator chain 13 instead of a riveted pin.
- the loosely held pin 25 is preferably also cylindrical and has a diameter corresponding to that of the last hole in the operator chain 13 .
- the length of the pin is longer than the width of the chain, i.e. longer than the rest of the short cylindrical pins 22 .
- the length of the pin is adapted so as not allow it to pass the entry opening 14 of the operator housing 1 .
- the loosely held pin 25 abuts it and prevents the operator chain 13 from moving any further in that direction. This provides a cheap and simple stop for the operator chain 13 .
- the loosely held pin 25 is made of steel.
- This simple stop means conveniently allows for different lengths of operator chain 13 to be used.
- This is utilised in another aspect of the invention, in which the operator housing 1 is provided with means for attaching a separate operator magazine.
- the use of a separate operator magazine allows for the use of different sized magazines with the same operator housing 1 , the size of the magazine being adapted to the length of operator chain 13 needed for a specific window.
- the magazine comprises two parts, viz. a housing part 30 and a lid part 31 .
- the housing part 30 contains a generally spiral guideway 32 with sidewalls 33 , 34 between which the chain 13 may slide.
- the bottom wall 35 of the guideway comprises a groove 36 , in which one end of the loosely held pin 25 is received.
- the loosely held pin 25 may thus slide in the groove 36 , during motion of the chain 13 .
- the lid part 31 comprises a corresponding groove 37 in which the other end of the loosely held pin 25 is received and may slide.
- the overall height from the bottom of the groove 37 in the lid part 31 to the bottom of the groove 35 in the housing part 30 generally corresponds to the length of the loosely held pin 25 .
- the overall height between the bottom surface 35 of the guideway 35 and the surface 38 of the lid part 31 , in which the groove 37 is provided, generally corresponds to the height of the entry opening 14 .
- the magazine housing 30 and the magazine lid 31 are provided with mutually cooperating locking means such as barbed resilient tabs 42 and holes 43 .
- locking means such as barbed resilient tabs 42 and holes 43 .
- the magazine lid 31 may be secured on the magazine housing 30 in many different ways.
- the magazine is attached to the operator housing 1 in a releasable fashion, allowing different magazines to be attached to the same operator housing 1 or to identical operator housings 1 in an interchangeable way.
- protrusions 44 , 45 with T shaped or L shaped cross sections on the operator housing 1 .
- These protrusions may engage corresponding undercut grooves 46 , 47 in the magazine housing 30 in a sliding fashion.
- the undercut grooves 46 , 47 are permanently closed at one end, whereas the other end of the groove is closed by the magazine lid 31 , when it is secured to the magazine housing 1 .
- the protrusions 44 , 45 With the magazine lid 31 in place the protrusions 44 , 45 will thus be trapped between the magazine lid 31 and the magazine housing 30 and prevent the protrusions 44 , 45 from disengaging the undercut grooves 46 , 47 .
- the magazines are readily interchangeable without he use of tools. This furthermore applies to he chains 13 as well, since the only thing preventing the chain 13 from being withdrawn fully from the operator housing 1 is the loosely held pin 25 , which may simply be gripped with the fingers of a hand once the magazine lid 31 has been removed.
- the magazine lid 31 itself being removable upon pressing the barbed locking members 42 with a finger of a hand.
- the sprocket 6 may be turned by means of the external manual operating device engaging the coupling means at one end 11 of the worm 12 , as mentioned above, thereby driving the operator chain 13 entirely out of the operator housing 1 .
- T shaped and L shaped protrusions are used, the skilled person will know that other configurations are well possible, e.g. dovetail, keyhole shape etc.
Abstract
A chain operator housing (1) comprising a barrier member (16) for subdividing the interior of said operator housing (1) into an operator chain compartment, which is open to the exterior, and a drive compartment, which is substantially sealed from the exterior.
Description
- The present invention relates to a chain operator housing, in particular for a manually operated chain operator for windows.
- Chain operators for windows are well known. Such chain operators generally comprise an operator chain housed in a magazine, a sprocket engaging the chain for driving it in and out of the magazine, thereby opening and closing a window, which is coupled to one end of the chain. The sprocket is integral with, or at least directly connected to, a coaxial gear wheel, which is coupled to a reduction mechanism. In its simplest form the reduction mechanism may be a worm gear, where the gear wheel constitutes the worm wheel, co-operating with the worm. Alternatively the gear wheel could constitute the sun wheel of a planetary reduction gear. The sprocket and gears are mounted in a housing of which the chain magazine forms part. The housing comprises an exit opening through which the chain may be driven in and out by the sprocket so as to operate the window. Examples of such chain operators are found in e.g. U.S. Pat. No. 4,521,993 and EP-A-624703.
- The presence of the exit opening, however, provides a problem in the sense that it allows moist, dirt, salt etc. to enter into the chain operator, and affect the internal parts, such as the worm gear. In particular, if salty mist enters through the exit opening, these internal parts may corrode and eventually render the chain operator inoperable.
- Evidently the exit opening for the chain cannot be avoided. Moreover, the exit opening is not easily sealed because of the inherent irregularities of the chain.
- It is the object of the invention to provide a chain operator, which overcomes these prior art problems, and in particular to provide a chain operator, which is resistant to corrosion caused by salty mist.
- According to the invention this object is achieved by an operator housing for a chain operator, wherein said housing comprises a barrier member for subdividing the interior of said housing into a chain compartment, which is open to the exterior, and a drive compartment, which is substantially sealed from the exterior.
- It has turned out that this is a simple and efficient way of preventing corrosion. In particular, it has turned out that the barrier member need not be airtight.
- Thus, according to a preferred embodiment the barrier member is an injection moulded plastic member.
- In order to obtain precise positioning of the barrier, the barrier member comprises positioning means cooperating with said housing.
- In a preferred embodiment the positioning means is devised such that in the direction of the coaxial arrangement of said sprocket and gear wheel said positioning means frictionally positions the barrier member.
- This allows the barrier member to simply be pushed into the housing after the sprocket and gearwheel have been positioned.
- According to another embodiment the barrier member further comprises a bearing surface against which the chain may slide.
- This gives good control over the chain motion and reduces friction.
- According to yet another preferred embodiment the housing comprises means for attaching a chain magazine.
- This allows for the use of different chain magazines for the same operator, in particular magazines with different sizes and containing different lengths of operator chains.
- In another preferred embodiment: the housing comprises a substantially planar bottom wall and a protrusion extending externally over said bottom wall.
- This allows for efficient positioning of the operator housing with respect to a window, in which a corresponding positioning recess is provided.
- According to another aspect of the invention the object is achieved by means of a chain operator for windows, said chain operator comprising an operator chain, a housing comprising an exit opening for said operator chain, and a sprocket for driving said chain in and out of said exit opening, and at least one gear wheel in fixed coaxial connection with said sprocket, wherein a barrier member is arranged within said housing, said barrier member comprising a barrier arranged between said exit opening and at least the major part of said gear wheel.
- Another problem of the prior art chain operators relates to the fact that for different sizes of windows different lengths of chain has to be used to open the window to a specific desired degree. In U.S. Pat. No. 4,521,993 a fixed length of chain housed in a magazine formed by a track in the housing. If less than the full length is to be used, a blocking member in the form of a removable insert is placed in one of the driving spaces for the sprocket in the chain. This then blocks the space and prevents the sprocket from driving the chain any further than the insertion point.
- Since the full length of chain is always used, the housing with the chain magazine has to be dimensioned to the longest foreseeable chain necessary for the different sized windows.
- Apart from the fact that the use of a chain longer than actually necessary and the manufacturing of correspondingly larger houses than actually needed involves unnecessary material costs, it is also from an aesthetic point of view undesirable to have a chain operator, which is larger than necessary, fitted to the window. On the other hand producing and storing a wide range of different operator housings also increase costs.
- It is another object of the present invention to overcome this second problem.
- The present invention solves this problem by providing a chain operator for windows, said chain operator comprising an operator chain, a housing comprising entry opening for said operator chain and an exit opening for said operator chain, and a sprocket for driving said chain in and out of said exit opening, wherein said housing comprises attachment means for attaching a chain magazine in communication with said entry opening.
- In particular, the problem is solved by providing an operator housing for a chain operator, said housing comprising an entry opening and an exit opening for an operator chain, wherein the housing comprises attachment means for attaching a chain magazine in communication with said entry opening.
- These measures allow same chain operator or even different chain operators with similar houses to be used with different sized chain magazines adapted to the length of chain needed, where the chain magazine comprises attachment means adapted for cooperation with the housing of the chain operator.
- Irrespective of the actual length of the chain it is always important to avoid that the sprocket drives the chain too far, i.e. out of engagement with the sprocket itself or even all the way out of the housing.
- U.S. Pat. No. 4,521,993 addresses inter alia this problem.
- It is suggested to use, as the last chain link, a special link with protrusions, which may abut a corresponding protrusion on a guide rib for the chain. If less than a full length of chain is to be used to open the window it is suggested to place a removable insert in one of the driving spaces for the sprocket in the chain. This then blocks the space and prevents the sprocket from driving the chain any further.
- The third problem that the present invention sets out to solve is to provide a simple and cheap end stop for the chain.
- According to the invention this is achieved by inserting in the rivet hole of the last link a stop element protruding over the link.
- This is a simple way of providing a stop, which will not pass the entry opening of the operator housing, which in turn prevents the chain from being driven too far.
- A further problem with chain operators is their correct positioning in relation to the sash or frame on which they are to be mounted.
- This fourth problem is solved by providing an operator housing for a chain operator, wherein the housing comprises a substantially planar bottom wall and a protrusion extending externally over said bottom wall.
- In a preferred embodiment a cylindrical wall extends internally from said bottom wall, said cylindrical wall portion defining a bore for holding a spindle on which a sprocket and gearwheel assembly is mounted.
- The cylindrical wall with the bore provides stable mounting of the spindle.
- Said stable mounting is improved in a further preferred embodiment where said bore extends at least partially through the substantially planar wall in a direction towards the external protrusion.
- A particularly stable mounting is obtained when, according to more preferred embodiment, said bore extends through the substantially planar wall into the external protrusion, because the use of the additional room in the external protrusion allows the spindle to be supported over a longer distance by said bore, than would otherwise be possible if the cylindrical wall alone should support the spindle.
- In yet another preferred embodiment the protrusion is cylindrical.
- This minimises the material costs because it allows the external shape to correspond to that of the bore, thus giving a constant wall thickness.
- In yet another preferred embodiment the end surface of the cylindrical wall forms a bearing surface for the sprocket and gearwheel assembly.
- The invention will now be explained in greater detail with reference to the figures, on which
-
FIG. 1 shows an exploded view of the chain operator housing and chain magazine of the present invention, -
FIG. 2 shows an exploded partial view of the chain operator housing and chain magazine according to the present invention -
FIG. 3 shows a top plan view of the operator housing and chain magazine with the respective lids and the barrier member removed, -
FIG. 4 shows another exploded view of the operator housing and chain magazine, with bottom details visible, but without the chain, -
FIG. 5 a perspective view of the chain placed in the operator housing and chain magazine. -
FIG. 1 shows an exploded view of the chain operator of the invention. The operator comprises acast metal housing 1, e.g. of pressure die-cast zinc. Themetal housing 1 has substantially planarbottom wall 2. From the internal side of thebottom wall 2 an essentially cylindrical wall 3 extends. The cylindrical wall 3 defines a bore in which aspindle 4 is located in a fixed manner. Theend surface 5 of the cylindrical wall 3 forms a bearing surface for asprocket 6, which is arranged on thespindle 4. Thesprocket 6 forms part of an assembly of the sprocket and agearwheel 7. In the preferred embodiment the assembly is formed by joining two separate parts in a fixed mechanical relationship, but it is to be understood that they could just as well be integrally formed or that they could be separate parts interlocking in the rotational direction only. - In cut-outs in the
operator housing 1 two loosely fittedjournal bearings 8 and 9 are located. These bearings serve as bearings for the opposite ends 10, 11 of a shaft carrying aworm 12 meshing with thegear wheel 7. One of the opposite ends 11 is provided with a coupling means for an external manual operating device (not shown). In the embodiment shown the engagement means is a recess with hexagonal cross section, but the skilled person will appreciate that any other coupling means, such as a hook, an eyelet, a hexagonal head portion etc. could be used, as well of different cross sections of the recess and the head portion could be used. - The
operator housing 1 furthermore includes two openings for anoperator chain 13, viz. anentry opening 14 and anexit opening 15, both best visible in theFIG. 2 . As mentioned, theexit opening 15 is open to the external environment, and thus poses a problem in the sense that pollutants may enter into theoperator housing 1 through it. - In order to protect the gear mechanism, which in the embodiment shown comprises the
worm 12 and thegear wheel 7, abarrier member 16 is provided between theexit opening 15 and thegearwheel 7, preferably between thesprocket 6 and thegear wheel 7. The barrier member is preferably a separate injection moulded, one-piece plastic part, e.g. of PBT, which may be inserted in the die-cast part of theoperator housing 1. Thebarrier member 16 is provided with acentral opening 17, through which thegear wheel 7 passes. In the preferred embodiment shown thebarrier member 16 further comprises acurved wall part 26 along which theoperator chain 13 may slide during its motion. This lowers the friction as compared to friction against the die-castzinc operator housing 1. Thebarrier member 16 is fixed in respect to theoperator housing 1 by means of tubularfriction locking members 18, held incorresponding grooves 19 in theoperator housing 1, in which they are inserted. Furthermore their length is adapted such that thebarrier member 16 is furthermore positioned by means of alid 20 covering theoperator housing 1, and the end walls of therespective grooves 19. Thelid 20 is preferably secured on theoperator housing 1 by means ofscrews 21. In order to further ensure good positioning and for stabilising thecurved wall part 26 of thebarrier member 16 against the pressure form theoperator chain 13, the curved wall part hasprotrusions 27 engaging correspondingholes 28 in thebottom wall 2 of theoperator housing 1. - It has been found that even though the
barrier member 16 does not form a perfect seal along the inside of the walls of theoperator housing 1 and around thegear wheel 7, protection against in particular corrosive salty mist entering through theexit opening 15 for theoperator chain 13. - As already explained, the internal side of the
bottom wall 2 an essentially cylindrical wall 3 extends. The cylindrical wall 3 defines a bore in which aspindle 4 is located in a fixed manner. In this respect, however, the expression bore is to be understood as a generally cylindrical hole in a broad sense. In particular it should be understood that it is not restricted to a prefabricated bore in which thespindle 4 is inserted. Thus in the preferred embodiment the spindle is secured in place during the die-casting, i.e. the zinc of thehousing 1 is cast around one end part of thespindle 4, thereby forming the bore. This end part of the spindle may be provided with grooves, so as to hold the spindle securely in thehousing 1. - In order to secure the
spindle 4 as well as possible, aprotrusion 29 is formed on the outside of thebottom wall 2 of thehousing 1. This provides an additional thickness of thebottom wall 2, allowing the spindle to be inserted deeper into the housing wall without penetrating it. Thus the spindle is supported over a longer distance by the cylindrical and the bottom part of the bore, than would be possible without theprotrusion 29. Preferably theprotrusion 29 is cylindrical. Thecylindrical protrusion 29, furthermore provides a convenient means for positioning the operator with respect to a window. Hence, according to the invention theprotrusion 29 serves dual functions. - The spindle is furthermore supported by means of a corresponding
cylindrical wall 40 with acentral bore 41 for receiving the free end of thespindle 4. - The
operator chain 13 is of a generally known construction with links riveted together by means of shortcylindrical pins 22 in pairs ofholes 23 along the length of theoperator chain 13. Oneend 24 of thechain 13 is preferably adapted for engagement with a part of window. In order to prevent theoperator chain 13 from being driven all the way out of engagement with the sprocket 6 a stop is provided at the other end of theoperator chain 13. According to an advantageous aspect of the invention this stop is a loosely heldpin 25, simply being placed in the last existing hole of theoperator chain 13 instead of a riveted pin. The loosely heldpin 25 is preferably also cylindrical and has a diameter corresponding to that of the last hole in theoperator chain 13. The length of the pin is longer than the width of the chain, i.e. longer than the rest of the short cylindrical pins 22. The length of the pin is adapted so as not allow it to pass the entry opening 14 of theoperator housing 1. When reaching theoperator housing 2 the loosely heldpin 25 abuts it and prevents theoperator chain 13 from moving any further in that direction. This provides a cheap and simple stop for theoperator chain 13. Preferably the loosely heldpin 25 is made of steel. - This simple stop means conveniently allows for different lengths of
operator chain 13 to be used. This is utilised in another aspect of the invention, in which theoperator housing 1 is provided with means for attaching a separate operator magazine. The use of a separate operator magazine allows for the use of different sized magazines with thesame operator housing 1, the size of the magazine being adapted to the length ofoperator chain 13 needed for a specific window. - In the figures only one size of magazine is shown. The skilled person however will know that this is merely a matter of adapting the length of the magazine.
- The magazine comprises two parts, viz. a
housing part 30 and a lid part 31. Thehousing part 30 contains a generallyspiral guideway 32 withsidewalls chain 13 may slide. Thebottom wall 35 of the guideway comprises agroove 36, in which one end of the loosely heldpin 25 is received. The loosely heldpin 25 may thus slide in thegroove 36, during motion of thechain 13. Similarly the lid part 31 comprises a correspondinggroove 37 in which the other end of the loosely heldpin 25 is received and may slide. In the assembled condition of the chain magazine, the overall height from the bottom of thegroove 37 in the lid part 31 to the bottom of thegroove 35 in thehousing part 30 generally corresponds to the length of the loosely heldpin 25. The overall height between thebottom surface 35 of theguideway 35 and thesurface 38 of the lid part 31, in which thegroove 37 is provided, generally corresponds to the height of theentry opening 14. Thus when that end of thechain 13, at which the loosely heldpin 25 is located, reaches the entry opening 14 the loosely heldpin 25 cannot pass theentry 14 opening into theoperator housing 1. The loosely held pin thus serves as a stop means for thechain 13 in conjunction with the wall of theoperator housing 1 around theentry opening 14. - The
magazine housing 30 and the magazine lid 31 are provided with mutually cooperating locking means such as barbedresilient tabs 42 and holes 43. The skilled person will understand that this is only a preferred embodiment, and know that the magazine lid 31 may be secured on themagazine housing 30 in many different ways. - The magazine is attached to the
operator housing 1 in a releasable fashion, allowing different magazines to be attached to thesame operator housing 1 or toidentical operator housings 1 in an interchangeable way. - Preferably this is done by means of
elongate protrusions operator housing 1. These protrusions may engage corresponding undercutgrooves magazine housing 30 in a sliding fashion. Theundercut grooves magazine housing 1. With the magazine lid 31 in place theprotrusions magazine housing 30 and prevent theprotrusions undercut grooves - Since the
protrusions grooves operator housings 1 andmagazine housings 30 the magazines are readily interchangeable without he use of tools. This furthermore applies to hechains 13 as well, since the only thing preventing thechain 13 from being withdrawn fully from theoperator housing 1 is the loosely heldpin 25, which may simply be gripped with the fingers of a hand once the magazine lid 31 has been removed. The magazine lid 31 itself being removable upon pressing thebarbed locking members 42 with a finger of a hand. With the pin removed thesprocket 6 may be turned by means of the external manual operating device engaging the coupling means at oneend 11 of theworm 12, as mentioned above, thereby driving theoperator chain 13 entirely out of theoperator housing 1. - Though in the preferred embodiment a combination of T shaped and L shaped protrusions are used, the skilled person will know that other configurations are well possible, e.g. dovetail, keyhole shape etc.
- Also, though the above exemplary description of a preferred embodiment relates to a manually operated chain operator for windows, it should be noted that the principles of the invention are just as well applicable for electrically operated window operators, in which the electrical motor and gear transmission may be protected by the barrier member.
Claims (30)
1. A chain operator housing having an interior, comprising:
a barrier member for subdividing the interior of said operator housing into an operator chain compartment, which is open to the exterior, and a drive compartment, which is substantially sealed from the exterior, wherein the barrier member is a separate member that is insertable into said chain operator housing.
2. A chain operator housing according to claim 1 , wherein the barrier member comprises a bearing surface against which an operator chain may slide.
3. A chain operator housing according to claim 1 , wherein the barrier member is an injection molded plastic member.
4. A chain operator housing according to claim 1 , wherein the barrier member comprises positioning means for positioning the barrier member with respect to said operator housing, said positioning means cooperating with said operator housing.
5. A chain operator housing according to claim 1 , wherein said operator housing comprises means for attaching a chain magazine to said operator housing.
6. A chain operator housing according to claim 1 , further comprising a substantially planar bottom wall and a protrusion extending externally from said bottom wall.
7. A chain operator for windows, comprising:
an operator chain;
an operator housing comprising an exit opening for said operator chain;
a sprocket for driving said operator chain in and out of said exit opening; and
at least one gear wheel in fixed coaxial connection with said sprocket, wherein a barrier member is arranged within said operator housing, said barrier member comprising a barrier arranged between said exit opening and at least most of said gear wheel.
8. A chain operator according to claim 7 , wherein the barrier member is a separate member that is insertable into said chain operator housing.
9. A chain operator according to claim 7 , wherein the barrier member further comprises a bearing surface against which the operator chain may slide.
10. A chain operator according to claim 7 , wherein the barrier member is an injection molded plastic member.
11. A chain operator according to claim 7 , wherein the barrier member further comprises positioning means for positioning the barrier member with respect to said operator housing, said positioning means cooperating with said operator housing.
12. A chain operator for windows, comprising
an operator chain;
an operator housing comprising an entry opening for said operator chain and an exit opening for said operator chain and
a sprocket for driving said operator chain into and out of said exit opening, wherein said operator housing further comprises attachment means for attaching a chain magazine to said operator housing and in communication with said entry opening.
13. A chain operator according to claim 12 , wherein said attachment means comprises profiled rails on said operator housing.
14. A chain operator according to claim 13 , wherein said profiled rails comprise a cross section selected among the group of substantially T shaped, substantially L shaped, keyhole shaped and dovetail profiles.
15. A chain operator according to claim 14 , wherein said attachment means further comprises an undercut groove.
16. A chain operator according to claim 15 , wherein said undercut groove comprises a cross section selected among the group of substantially T shaped, substantially L shaped, and dovetail cross sections.
17. A chain operator housing (1) comprising a substantially planar bottom wall and a protrusion extending externally from said bottom wall.
18. A chain operator housing comprising.
an entry opening for an operator chain;
an exit opening for the operator chain; and
attachment means for attaching a chain magazine to said operator housing and in communication with said entry opening.
19. A chain magazine comprising
a housing; and
attachment means for releasably attaching the chain magazine to a chain operator without the use of tools.
20. A stop member for an operator chain in a chain operator, wherein the operator chain has a width, rivet holes and rivets, comprising a pin arranged in a rivet hole not occupied by a rivet in the operator chain, said pin having a length exceeding the width of the operator chain.
21. A stop member according to claim 20 , wherein the pin is cylindrical with a diameter corresponding essentially to that of the rivet hole.
22. A stop member according to claim 21 , wherein said the diameter of the pin is slightly smaller than that of the rivet hole, so as to be loosely held in said rivet hole.
23. A chain operator housing according to claim 17 , further comprising a cylindrical wall portion extending internally from said bottom wall, said cylindrical wall portion defining a bore for holding a spindle on which a sprocket and gearwheel assembly is mounted.
24. A chain operator housing according to claim 23 , wherein said bore extends at least partially through the substantially planar bottom wall in a direction towards the external protrusion.
25. A chain operator housing according to claim 24 , wherein said bore extends through the substantially planar wall into the external protrusion.
26. A chain operator housing according to claim 17 , wherein said protrusion is cylindrical.
27. A chain operator housing according to claim 23 , wherein the end surface of the cylindrical wall portion forms a bearing surface for the sprocket and gearwheel assembly.
28. A chain operator housing according to claim 2 , wherein the barrier member is an injection molded plastic member.
29. A chain operator according to claim 7 , further comprising a stop member for the operator chain, wherein the operator chain has a width, rivet holes and rivets, and the stop member comprises a pin arranged in a rivet hole not occupied by a rivet in the operator chain, said pin having a length exceeding the width of the operator chain.
30. A chain operator according to claim 12 , further comprising a chain magazine having a housing and attachment means for releasably attaching the chain magazine to the operator housing without the use of tools.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/232,997 US7886493B2 (en) | 2003-02-25 | 2008-09-26 | Chain operator housing |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PA200300284 | 2003-02-25 | ||
DKPA200300284 | 2003-02-25 | ||
PCT/DK2004/000101 WO2004076792A2 (en) | 2003-02-25 | 2004-02-13 | A chain operator housing |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/232,997 Division US7886493B2 (en) | 2003-02-25 | 2008-09-26 | Chain operator housing |
Publications (1)
Publication Number | Publication Date |
---|---|
US20060260199A1 true US20060260199A1 (en) | 2006-11-23 |
Family
ID=32921525
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/546,220 Abandoned US20060260199A1 (en) | 2003-02-25 | 2004-02-13 | Chain operator housing |
US12/232,997 Expired - Fee Related US7886493B2 (en) | 2003-02-25 | 2008-09-26 | Chain operator housing |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/232,997 Expired - Fee Related US7886493B2 (en) | 2003-02-25 | 2008-09-26 | Chain operator housing |
Country Status (7)
Country | Link |
---|---|
US (2) | US20060260199A1 (en) |
EP (1) | EP1597453A2 (en) |
JP (1) | JP2006518818A (en) |
CN (4) | CN101109254A (en) |
CA (1) | CA2516383A1 (en) |
PL (1) | PL378569A1 (en) |
WO (1) | WO2004076792A2 (en) |
Cited By (2)
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---|---|---|---|---|
EP4080006A1 (en) * | 2021-04-22 | 2022-10-26 | VKR Holding A/S | Chain actuator drive with bearing and bearing lock |
US11777361B2 (en) | 2021-11-29 | 2023-10-03 | AISIN Technical Center of America, Inc. | Water blocking motor cover for a sunroof system |
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ITBO20070066A1 (en) * | 2007-02-01 | 2008-08-02 | Franceschi Daniele De | POLYFUNCTION LOCK AND ORGAN SERVOMOTOR ACTUATOR ROLLED ON INTERCHANGEABLE SPROCKET |
DE102008003328B3 (en) * | 2008-01-07 | 2009-01-29 | Geze Gmbh | Mechanism to move a window pane, between open and closed positions, has a limit stop to limit the movement of the push chain with a hook to catch a chain link bolt extension |
US8601745B2 (en) * | 2009-06-17 | 2013-12-10 | Truth Hardware | Operator for movable sash |
DE202011050625U1 (en) * | 2011-07-04 | 2012-10-11 | D+H Mechatronic Ag | chain drive |
DE202012003951U1 (en) * | 2012-04-20 | 2012-05-11 | D+H Mechatronic Ag | chain drive |
CN102926053A (en) * | 2012-11-09 | 2013-02-13 | 无锡市新康纺机有限公司 | Middle-inner hinge box connector in flyer frame |
CN103470128A (en) * | 2013-09-18 | 2013-12-25 | 徐州大亚自动装备有限公司 | Chain track for window opener |
DE202017101221U1 (en) | 2017-03-03 | 2018-06-05 | Aumüller Aumatic GmbH | Chain thrust drive |
CN207048555U (en) * | 2017-08-03 | 2018-02-27 | 盖泽工业(天津)有限公司 | A kind of chain steering mechanism of automatic window machine |
DE102018104777A1 (en) * | 2018-03-02 | 2019-09-05 | Iwis Antriebssysteme Gmbh & Co. Kg | Actuator with back stiff chain |
DE102018104768A1 (en) * | 2018-03-02 | 2019-09-05 | Iwis Antriebssysteme Gmbh & Co. Kg | Actuator with back stiff chain |
KR102489126B1 (en) * | 2020-12-01 | 2023-01-13 | 박준우 | Chain Casing for Automatic Window Open and Close Device comprising the Smoke Ventilation Window |
KR102617068B1 (en) * | 2023-04-09 | 2023-12-21 | 이상용 | Autonomous Steering Upright Chain Actuator |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP4080006A1 (en) * | 2021-04-22 | 2022-10-26 | VKR Holding A/S | Chain actuator drive with bearing and bearing lock |
US11777361B2 (en) | 2021-11-29 | 2023-10-03 | AISIN Technical Center of America, Inc. | Water blocking motor cover for a sunroof system |
Also Published As
Publication number | Publication date |
---|---|
CN101109254A (en) | 2008-01-23 |
WO2004076792A2 (en) | 2004-09-10 |
JP2006518818A (en) | 2006-08-17 |
WO2004076792A3 (en) | 2004-12-23 |
CA2516383A1 (en) | 2004-09-10 |
CN100523422C (en) | 2009-08-05 |
PL378569A1 (en) | 2006-05-02 |
US20090100757A1 (en) | 2009-04-23 |
CN1742149A (en) | 2006-03-01 |
EP1597453A2 (en) | 2005-11-23 |
US7886493B2 (en) | 2011-02-15 |
CN101109255A (en) | 2008-01-23 |
CN101109253A (en) | 2008-01-23 |
AU2004215261A1 (en) | 2004-09-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: VKR HOLDING A/S, DENMARK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:JORGENSEN, THOMAS FRIIS;KORNERUP, KLAUS;REEL/FRAME:017028/0927 Effective date: 20050822 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |