JP2011106268A - Unit for driving opening/closing body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To efficiently perform assembling work by enabling the temporary assembling of a clutch mechanism and an output drum. <P>SOLUTION: A through-hole 151 in the axial direction of a shaft 10 is provided in the central portion of a field core 15 of the clutch mechanism 12, and a rotor 16 passes in a relatively rotatable manner through the through-hole 151. Also, an armature 17 of the clutch mechanism 12 has a frictional surface 171 which can bring about the connected state of the clutch mechanism 12 by being pressure-welded to a frictional surface 164 of the rotor when the armature 17 is attracted by a magnetic force. A drum base-side diameter-enlarged portion 104 to which the armature 17 is externally fitted is provided at the one-end side of the shaft 10 while the other end 102 rotatably supported by a bearing 25 is provided at the other-end side of the shaft 10. Furthermore, a deceleration mechanism 9 overlaps the bearing 25 in the radial direction of the shaft 10. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a driving device for an opening / closing body for opening / closing an opening / closing body supported to be opened and closed by a vehicle or the like.

  2. Description of the Related Art Conventionally, in an opening / closing body drive device, an output drum, which is rotatably supported by a base member via a shaft, and a cable for transmitting a driving force to the opening / closing body such as a slide door, is wound around the outer peripheral surface, and a motor And a clutch mechanism that is switched between a connected state in which the driving force is transmitted to the output drum and a disconnected state in which the driving force is not transmitted.

  The clutch mechanism incorporates an electromagnetic field coil and is fixed to the base member. The clutch mechanism is rotatably fitted to a shaft that pivotally supports the output drum and has a friction surface on the side end surface. A rotor that can be rotated by the driving force of the motor, and an armature that is rotatably supported by the shaft and movable in the axial direction, and that can rotate integrally with the output drum. By magnetically attracting the armature to the rotor and connecting it, the rotation of the rotor is transmitted to the output drum via the armature, and the opening / closing body is opened and closed via the transmission member (for example, , See Patent Document 1).

Japanese Patent Laying-Open No. 2005-232918 (FIG. 5)

  However, in the conventional opening / closing body driving device as described above, the field core, the rotor, the armature, and the output drum must be sequentially stacked on the base member to which the motor and the speed reduction mechanism are assembled. For this reason, there are problems that the assembling work is troublesome and the accuracy between the parts is difficult to be obtained.

  In view of the above-described problems of the prior art, the present invention enables the temporary assembly of the clutch mechanism and the output drum before the clutch mechanism is connected to the speed reduction mechanism, thereby improving the assembly work. It is an object of the present invention to provide a driving device for an opening / closing body that can be performed automatically.

  Therefore, the present invention includes a base plate 7, a motor 8 attached to the base plate 7, a cylindrical output drum 11 that can be opened and closed when rotated, a shaft 10 that serves as a rotation center of the output drum 11, and the motor 8. The clutch mechanism 12 that can be switched between a connection state that can be transmitted to the output drum 11 for rotation and a disconnected state that cannot be transmitted to the output drum 11, and the drive force of the motor 8 is decelerated and transmitted to the clutch mechanism 12. The clutch mechanism 12 includes a field core 15 in which an electromagnetic coil 14 is incorporated, a rotor 16 that is rotatably fitted to the shaft 10, and an outer shaft movably movable on the shaft 10. An armature 17 to be fitted, and a through hole 1 in the axial direction of the shaft 10 is formed at the center of the field core 15. 1, the rotor 16 penetrates the through-hole 151 of the field core 15 so as to be relatively rotatable, and the armature 17 is moved in the axial direction of the shaft 10 by the magnetic force of the electromagnetic coil 14. A friction surface 171 that can be brought into contact with the friction surface 164 of the rotor when pulled along is provided, and the rotor 16 and the armature 17 are accommodated on the inner diameter side of the output drum 11, and the shaft 10 A drum base side enlarged diameter portion 104 to which the armature 17 is fitted is provided on one end side of the shaft 10, and the other end portion 102 rotatably supported by a bearing 25 is provided on the other end side of the shaft 10 to reduce the deceleration. The mechanism 9 is an opening / closing body drive device configured to overlap with the bearing 25 in the radial direction of the shaft 10. Than is.

According to the present invention, the following effects can be obtained.
(A) According to the present invention, the first locking means for preventing the rotor from coming off from the shaft and the second locking means for preventing the field core from coming off from the rotor are provided, thereby connecting the rotor to the speed reduction mechanism. Since the armature, the rotor, and the field core can be temporarily assembled on the shaft supporting the output drum before the work is performed, the assembling work can be performed efficiently.

(B) According to the present invention, it is possible to prevent the armature from rattling in the axial direction by providing the elastic member that urges the frictional surfaces away from each other between the rotor and the armature.

(C) According to the present invention, since the rotor is rotatably held between the step portion of the shaft and the first locking means, it is possible to prevent the rotor from rattling in the axial direction.

(D) According to the present invention, since the shaft is formed integrally with the output drum, the number of parts can be reduced and the configuration can be simplified.

(E) According to the present invention, the end of the bearing cylinder portion of the rotor is directly or indirectly connected to the speed reduction mechanism, thereby simplifying the configuration and reliably connecting the rotor to the speed reduction mechanism. it can.

1 is a side view of a vehicle to which an embodiment of the present invention is applied. It is a longitudinal cross-sectional view of a drive device. It is a disassembled perspective view of a drive device. It is a longitudinal cross-sectional view of the temporary assembly state of a drive device.

  Hereinafter, an embodiment according to the present invention will be described with reference to the drawings. 1 is a side view of a vehicle to which an embodiment of the present invention is applied, FIG. 2 is a longitudinal sectional view of a drive device, FIG. 3 is an exploded perspective view of the drive device, and FIG. 4 is a temporarily assembled state of the drive device. FIG. In the following description, the left side in FIG. 1 is “front”, and the right side in FIG. 1 is “rear”.

  As shown in FIG. 1, the sliding door (1) which forms the opening / closing body of a minivan or wagon type vehicle is provided on the side surface of the vehicle body (2), and the upper, middle and lower guide rails (3) (4) ( 5) is supported to be openable and closable in the front-rear direction, and is manually operated and the drive device (6) assembled to the rear of the vehicle body (2) from the fully closed position where the entrance of the vehicle body (2) is closed. While moving slightly outward from the outer side, it is possible to move to the fully open position moved rearward along the side of the vehicle body (2) and vice versa.

  As shown in FIGS. 2 and 3, the driving device (6) includes a metal base plate (7) that forms a base member fixed to the vehicle body (2), a motor (8) that can rotate forward and reverse, and a motor ( 8) The worm wheel (9) that forms a speed reduction mechanism that decelerates the rotation of the motor 8 and the shaft (10) that faces in the left-right direction are pivotally supported, and the driving force of the motor (8) is supplied to the slide door (1). ) And a power transmission path between the worm wheel (9) and the output drum (11), and the output drum (11) made of synthetic resin to which the cable (13) constituting the transmission member is coupled. And an intermittent clutch mechanism (12).

  A gear side housing (21) that accommodates the worm wheel (9) is fixed to the side surface (left side surface in FIG. 2, upper surface in FIG. 3) of the base plate (7) by screws (20). The drum-side housing (23) that houses the output drum (11) and the clutch mechanism (12) is fixed to the opposite side surface (the right side surface in FIG. 2 and the lower side surface in FIG. 3) by screws (22). . The right side surface of the base plate (7) in FIG. 2 is expressed as one side surface, and the left side surface is expressed as the other side surface. The motor (8) is attached to the other side surface of the base plate (7) via the gear side housing (21).

  The cables (13) connected to the output drum (11) are respectively hung around guide members (not shown) provided at the front end portion and the rear end portion of the guide rail (4), and the guide rail (4). It is routed along and the end is connected to the sliding door (1).

  As shown in FIG. 2, the worm wheel (9) is fitted into a cylindrical bearing tube portion (211) provided inside the gear side housing (21), so that the inside of the gear side housing (21). And is engaged with a worm (24) fixed to the output shaft of the motor (8), and the motor (8) rotates at a reduced speed.

  A damper plate (19) that can rotate integrally with the worm wheel (9) is provided on the inner diameter side of the worm wheel (9). The damper plate (19) is for mitigating an impact when the rotation of the worm wheel (9) is transmitted to the rotor (16).

  The output drum (11) has a substantially cylindrical shape with a bottom, a spiral groove (111) around which the cable (13) is wound is formed on the outer peripheral surface, and a shaft (10) is integrally formed at the center. is doing.

  One end portion (101) of the shaft (10) protruding from the right side surface (lower side surface in FIG. 3) of the output drum (11) toward the drum side housing (23) is provided in the drum side housing (23). The other end (102) is pivotally fitted in the bearing hole (231) and protrudes from the left side surface (upper side surface in FIG. 3) of the output drum (11) toward the gear housing (21). ) Is rotatably supported inside the bearing tube portion (211) of the gear side housing (21) via a bearing (25).

  The root portion of the shaft (10) protruding from the left side surface of the output drum (11) is formed with a drum root-side enlarged diameter portion (104), and the other end portion with a small diameter that is the tip side of the shaft (10). (102) A fitting groove (103) into which an E washer (27) constituting the first locking means described later is fitted in the axial direction is provided on the outer periphery on the near side. Between the drum base side enlarged diameter portion (104) and the small diameter other end portion (102) of the shaft (10), the center of the shaft is smaller in diameter than the enlarged diameter portion (104) and larger in diameter than the other end portion (102). Part (106).

  The clutch mechanism (12) includes a substantially cylindrical field core (15) made of a magnetic body, in which an electromagnetic coil (14) is incorporated and fixed to one side surface of a base plate (7) by screws (26), and a field core ( 15) a rotor (16) made of a magnetic material rotatably fitted on a shaft (10) passing through a through hole (151) provided in the center of the rotor, and a friction surface (171) of the rotor (16). There is provided an armature (17) made of a magnetic body that is externally fitted to the enlarged diameter portion (104) of the shaft (10) so as to face the friction surface (164) so as to be rotatable and slightly movable in the axial direction. The rotor (16), the armature (17), and the field core (15) are accommodated on the inner diameter side of the output drum (11).

  The rotor (16) has a bearing tube portion (161) that protrudes leftward from the side surface opposite to the friction surface (164) and is rotatably fitted to the shaft (10). The bearing tube portion (161) passes through the through hole (151) of the field core (15) together with the shaft (10), and the end portion thereof is connected to the worm wheel (9) via the damper plate (19). A knurling (162) to be connected is formed. In addition, a fitting groove (163) into which a ring member (29) constituting second locking means described later is fitted in the axial direction is formed in the outer periphery of the bearing tube portion (161).

  The E washer (27) is fitted in the fitting groove (103) of the shaft (10) after the armature (17) and the bearing tube portion (161) of the rotor (16) are rotatably fitted on the shaft (10). As a result, the rotor (16) contacts the left end surface of the bearing tube portion (161) and prevents the rotor (16) from moving away from the shaft (10) (leftward in FIGS. 2 and 4). To do. This prevents the rotor (16) and the armature (17) from coming out of the shaft (10) in the assembly work stage before the clutch mechanism (12) is connected to the worm wheel (9), thereby efficiently assembling. Can be done. In addition, after assembly (when the field core (15) is fixed to the base plate (7) and the rotor (16) is connected to the worm wheel (9)), both ends of the bearing tube portion (161) Between the step part (105) provided in (10) and the E washer (27), it is clamped so that no backlash occurs in the axial direction. Thereby, the backlash in the axial direction with respect to the shaft (10) of the rotor (16) can be reliably prevented.

  The ring member (29) is rotatably inserted into the through hole (151) of the field core (15) through the bearing tube portion (161) of the rotor (16), and then the fitting groove (163) of the bearing tube portion (161). ) Is brought into contact with the left side surface of the field core (15), and the field core (15) moves in a direction (leftward in FIGS. 2 and 4) from the bearing tube portion (161). Stop. This prevents the field core (15) from slipping out of the bearing tube portion (161) of the rotor (16) in the work stage before connecting the rotor (16) to the worm wheel (9), thereby making assembly efficient. Can be done automatically. In addition, it is possible to regulate the backlash of the rotor (16) in the axial direction after assembly.

  Between the rotor (16) and the armature (17), a wave washer (28) is provided as an elastic member. The wave washer (28) is externally fitted to the enlarged diameter portion (104) of the shaft (10), and is attached in a direction in which the friction surface (171) of the armature (17) is separated from the friction surface (164) of the rotor (16). Rush. This prevents backlash in the axial direction between the rotor (16) and the armature (17). Note that the armature (17) is in contact with the left side surface of the output drum (11), so that the moving force in the axial direction is limited.

  When the electromagnetic coil (14) is energized, that is, when the clutch mechanism (12) is connected, the armature (17) is magnetically attracted to the rotor (16), and the rotation of the motor (8) is reduced. ), The worm wheel (9), the damper plate (19), the rotor (16), and the armature (17) to be transmitted to the output drum (11). When the driving force of the motor (8) is transmitted to the output drum (11), the cable (13) is wound around the output drum (11), and the slide door (1) is moved in the closing direction or the opening direction. it can. Further, since the rotor (16) and the armature (17) are disconnected when the electromagnetic coil (14) is not energized, that is, when the clutch mechanism (12) is disconnected, the worm wheel (9), The slide door (1) can be opened and closed manually without reversing the motor (8).

  Next, the assembly procedure of the drive device (6) will be described. First, the armature (17) and the rotor (16) are rotatably fitted on the shaft (10) formed integrally with the output drum (11), and are fitted into the fitting groove (103) of the shaft (10). Fit the E washer (27).

  Next, the field core (15) is fitted on the bearing cylinder (161) of the rotor (16), and the ring member (29) is fitted into the fitting groove (163) of the rotor (16). Accordingly, as shown in FIG. 4, the rotor (16) and the armature (17) are temporarily assembled with the shaft (10) by the E washer (27) so that the rotor (16) and the armature (17) do not fall off from the shaft (10). Then, the field core (15) is temporarily assembled to the rotor (16) by the ring member (29), so that the clutch mechanism (12) is in a work stage before connecting the rotor (16) to the worm wheel (9). And the output drum (11) can be temporarily assembled.

  In the subsequent work stage, the field core (15) of the clutch mechanism (12) temporarily assembled to the output drum (11) is fixed to the base plate (7) with screws (26), and finally the damper plate ( The assembly of the drive device (6) is completed by fitting 19) to the knurl (162) of the shaft (10) and connecting the worm wheel (9) and the rotor (16).

While the embodiments of the present invention have been described above, the following various modifications and changes can be made to the above embodiments without departing from the spirit of the present invention.
(I) The shaft (10) is formed separately from the output drum (11).
(Ii) The shaft (10) is directly connected to the worm wheel (9) without going through the damper plate (19).
(Iii) Instead of the sliding door (1), the opening / closing body is a back door, a sunroof, or a window opening / closing device.
(Iv) A wave washer (28) is disposed between the output drum (11) and the armature (17) so that the friction surface (171) of the armature (17) is the friction surface (164) of the rotor (16). Energize in the direction that always contacts. Thereby, the backlash in the axial direction of the rotor (16) and the armature (17) can be prevented.

(1) sliding door (opening / closing body), (2) vehicle body, (3), (4), (5) guide rail, (6) driving device, (7) base plate (base member), (8) motor, ( 9) Worm wheel (deceleration mechanism), (10) shaft, (11) output drum, (12) clutch mechanism, (13) cable (transmission member), (14) electromagnetic coil, (15) field core, (16) Rotor, (17) armature, (19) damper plate, (20) screw, (21) gear side housing, (22) screw, (23) drum side housing, (24) worm, (25) bearing, (26) Screw, (27) E washer (first locking means), (28) wave washer (elastic member), (29) ring member (second locking means), (101) one end, (102) the other end , (103 Fitting groove, (104) enlarged diameter portion, (105) stepped portion, (106) shaft central portion, (111) spiral groove, (151) through-hole, (161) bearing tube portion, (162) knurl, (163) ) Fitting groove, (164) friction surface, (171) friction surface, (211) bearing cylinder, (231) bearing hole.

Claims (7)

  A base plate (7), a motor (8) attached to the base plate (7), a cylindrical output drum (11) that can be opened and closed when rotated, and a shaft (the rotation center of the output drum (11)) 10), a clutch mechanism (12) that can be switched between a connection state in which the driving force from the motor (8) can be transmitted to the output drum (11) for rotation, and a disconnected state in which the drive force is not transmitted, and the motor (8) ), And the clutch mechanism (12) includes a field core (15) in which an electromagnetic coil (14) is incorporated, and the clutch mechanism (12). A rotor (16) rotatably fitted on the shaft (10); and an armature (17) fitted on the shaft (10) so as to be movable in the axial direction. A through hole (151) in the axial direction of the shaft (10) is provided at the center of the core (15), and the rotor (16) rotates relative to the inside of the through hole (151) of the field core (15). When the armature (17) is drawn along the axial direction of the shaft (10) by the magnetic force of the electromagnetic coil (14), the friction surface (164) of the rotor is allowed to penetrate freely. A friction surface (171) that can be brought into pressure contact with each other is provided, and the rotor (16) and the armature (17) are accommodated on the inner diameter side of the output drum (11), and the shaft (10) A drum base side enlarged diameter portion (104) on which the armature (17) is fitted is provided on one end side, and the other end side of the shaft (10) is rotatable by a bearing (25). The other end which is lifting the (102) provided, said reduction mechanism (9) the bearing (25) and the polymerized structure as the closing member of the drive unit in the radial direction of the shaft (10).   In Claim 1, between the said drum root side enlarged diameter part (104) and the said other end part (102) of the said shaft (10) is smaller diameter than the said drum root side enlarged diameter part (104), and said other A shaft center portion (106) having a diameter larger than that of the end portion (102) is provided, and the rotor side bearing tube portion (16) 1 through which the shaft center portion (106) penetrates in a relatively rotatable manner is provided in the rotor (16). The shaft (10) has a short diameter from the drum base side enlarged diameter portion (104) on one end side toward the other end portion (102) on the other end side through the central shaft central portion (106). An opening / closing body drive device configured as described above.   The rotor-side bearing tube portion (161) according to claim 3, wherein the rotor-side bearing tube portion (161) is an opening / closing body abutted on a step portion (105) between the drum root-side enlarged diameter portion (104) and the shaft center portion (106). Drive device.   The drum-side housing (23) for housing the output drum (11) and the clutch mechanism (12) is provided on the one end side of the base plate (7), and the speed reduction mechanism on the other end side. A gear-side housing (21) that houses (9) is fixed, and one end (101) on one end side of the shaft (10) is rotatably supported by the drum-side housing (23), and the shaft (10) The other end portion (102) of the gear side housing (21) is rotatably supported by the gear side housing (21), and the speed reduction mechanism (9) is rotated by a gear side bearing tube portion (211) provided in the gear side housing (21). Opening / closing body drive device fitted outside.   The drive device for an opening / closing body according to claim 4, wherein the damper plate (19) that rotates integrally with the speed reduction mechanism (9) is externally fitted so as to rotate in conjunction with the rotor-side bearing tube portion (161).   The other end (102) of the shaft (10) according to any one of claims 1 to 5, wherein the other end (102) is rotatably supported through a bearing (25) inside the gear side bearing tube (211). Opening and closing body drive device.   The first locking means (1) according to any one of claims 2 to 6, wherein the rotor (16) externally fitted to the shaft (10) is fitted into a fitting groove (103) of the shaft (10). 27) is prevented from falling off from the shaft (10), and the field core (15) externally fitted to the rotor-side bearing tube portion (161) is fitted into the fitting groove ( 163) The opening / closing body drive device in which the second locking means (29) fitted to 163) prevents the rotor-side bearing cylinder (161) from falling off.

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