JP2013108567A - Assembling device of clutch, assembling method of clutch, and clutch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an assembling device of a clutch capable of improving the clutch assembling property.SOLUTION: The assembling device 81 includes a base 82 having a placing face 82a on an upper face, and a device side engaging part 84 formed on the placing face 82a. The device side engaging part 84 is concave-convex engaged with a clutch side engaging part 54k formed in a holding case 54 positioned at one end of axial direction in the clutch, relatively immobilably in the plane direction of the placing face 82a.

Description

  The present invention relates to an assembling device used when assembling a mechanical clutch that is provided in a motor or the like as a driving source of a vehicle door opening / closing device and connects and disconnects a driving shaft and a driven shaft, and the assembling device The present invention relates to a method for assembling a clutch using the.

  2. Description of the Related Art In recent years, some automobiles equipped with a sliding door that opens and closes an entrance / exit provided on the side of a vehicle body are equipped with a vehicle door opening / closing device that automatically opens and closes the sliding door by a driving force of a motor. In this vehicle door opening and closing device, it is required that the sliding door can be manually opened and closed. Therefore, for example, the vehicle door opening and closing device described in Patent Document 1 includes a mechanical clutch that enables automatic opening and closing and manual opening and closing in a motor serving as a drive source.

  The mechanical clutch described in Patent Document 1 is provided so as to be able to rotate integrally with a substantially disk-shaped drive side rotating body that can rotate integrally with the drive shaft of the motor body, and a driven shaft connected to the door side. And a driven side rotating body having a bottom cylindrical shape. The drive-side rotator is disposed on the inner side of the driven-side rotator so as to be coaxial with the driven-side rotator. A roller member (power transmission member) is disposed between the driving side rotating body and the driven side rotating body in the radial direction. The roller member is inserted into a control groove formed in the outer peripheral edge of the drive side rotator, so that the roller member can rotate integrally with the drive side rotator and move in the radial direction with respect to the drive side rotator. . In addition, an intermediate plate (intermediate rotating body) is disposed so as to be adjacent to the driving side rotating body in the axial direction. A cam groove extending in the circumferential direction is formed in the intermediate plate, and one end portion of the roller member in the axial direction is inserted into the cam groove from the axial direction. The cam groove is formed so as to approach the outer peripheral surface of the intermediate plate from the central portion in the circumferential direction toward both end portions in the circumferential direction. The central portion in the circumferential direction of the cam groove is a non-engagement guide portion that disposes the roller member at a non-engagement position where the drive side rotation body and the driven side rotation body are not engaged in the rotation direction. Further, both end portions in the circumferential direction of the cam groove serve as engagement guide portions for disposing the roller member at an engagement position where the drive side rotating body and the driven side rotating body are engaged in the rotation direction. When the intermediate plate rotates relative to the drive-side rotator, the cam groove rotates with respect to the roller member. Therefore, the roller member moves from the non-engagement position to the engagement position or from the engagement position by the cam groove. Guided to the matching position. In addition, a return spring that connects the driving side rotating body and the intermediate plate in the rotation direction is interposed between the intermediate plate and the driving side rotating body. The return spring urges the intermediate plate so that the rotation position of the intermediate plate relative to the drive side rotating body is a position where the roller member is disposed in the non-engaging guide portion of the cam groove. The intermediate plate holds a friction weight. The friction weight is movable in the radial direction with respect to the intermediate plate, and is urged radially inward by a holding spring interposed between the friction weight and the intermediate plate. Further, the friction weight is radially opposed to the driven-side rotator inside the driven-side rotator.

  In this clutch, when the motor main body is stopped, the rotation position of the intermediate plate with respect to the drive-side rotator is maintained at a position where the roller member is disposed in the non-engagement guide portion of the cam groove by the urging force of the return spring. Therefore, the roller member is disposed at the non-engagement position, and is in an initial state in which the drive shaft and the driven shaft are disconnected. Therefore, since the drive shaft and the driven shaft are disconnected and the drive shaft is not rotated, the door can be manually opened and closed easily.

  On the other hand, when the motor body is driven, the roller member rotates together with the driving side rotating body. At this time, the rotation position of the intermediate plate holding the friction weight is maintained by the inertial force. Therefore, the intermediate plate rotates with a delay from the driving side rotating body. As a result, the drive-side rotator rotates relative to the intermediate plate against the urging force of the return spring. Then, since the roller member is rotated in the circumferential direction of the intermediate plate with respect to the cam groove, the roller member is guided by the cam groove and disposed at the engagement position. In other words, the roller member is connected to connect the drive shaft and the driven shaft. As a result, the driven shaft is rotated, and the slide door connected to the driven shaft is automatically opened and closed.

  If such a mechanical clutch is used, it is not necessary to carry out wiring for power feeding inside the motor as in the case of using an electromagnetic clutch, for example, and the internal structure of the motor becomes complicated. Is suppressed.

JP 2011-174544 A

  The clutch described in Patent Document 1 uses a cam groove to move the roller member from the non-engagement position to the engagement position or from the engagement position to the non-engagement position, and an intermediate plate for the drive side rotator. A plurality of mechanisms are provided for connecting / disconnecting the drive shaft and the driven shaft, such as a mechanism for setting the rotation position of the roller shaft to a position where the roller member is disposed in the non-engagement guide portion of the cam groove. Therefore, the clutch described in Patent Document 1 includes a large number of components and a large number of relatively moving components. Therefore, it is difficult to assemble the clutch.

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a clutch assembling apparatus, a clutch assembling method, and a clutch capable of improving the assembling property of the clutch. .

  In order to solve the above problem, the invention according to claim 1 is in an initial state in which the drive shaft and the driven shaft are disconnected when the drive shaft is not driven, while the drive shaft is driven when the drive shaft is driven from the drive shaft side. A mechanism that is connected to the driven shaft, and disconnects the driven shaft from the drive shaft when the drive shaft is not driven, while the drive shaft and the driven shaft are driven from the drive shaft side. An assembly device for a clutch for assembling a mechanical clutch that operates to connect a base, a base having a placement surface on an upper surface, and an axial end of the clutch formed on the placement surface. The gist of the present invention is that the clutch side engaging portion formed on the component located in the portion is provided with a device side engaging portion that engages with the concave and convex portions so as not to move relative to each other in the plane direction of the mounting surface.

  According to this configuration, the device-side engagement portion is engaged with the clutch-side engagement portion formed on the component located at one end of the clutch in the axial direction (axial direction of the drive shaft), and the component is placed. When arranged on the surface, the component cannot be moved on the placement surface in the plane direction of the placement surface. Therefore, after the parts located at one end in the axial direction of the clutch are arranged on the placement surface, when the other parts of the clutch are assembled in order, the other parts with respect to the parts whose movement is restricted on the placement surface Since it is assembled, it becomes easy to assemble other parts. Therefore, the assembly | attachment property of a clutch can be improved.

  According to a second aspect of the present invention, in the clutch assembling device according to the first aspect, the clutch is configured to be rotatable integrally with the driven shaft and the driven-side rotating body provided to be rotatable integrally with the drive shaft. The driven-side rotator is disposed between the drive-side rotator and the driven-side rotator in the radial direction, and is rotatably provided integrally with the drive-side rotator. A non-engagement position where the driven-side rotator is not engaged in the rotation direction, and an engagement where the drive-side rotator and the driven-side rotator are engaged in the rotation direction at a radially outer side than the non-engagement position. A power transmission member that is moved between positions; a cam portion that is engaged with the power transmission member and guides the movement of the power transmission member between the engagement position and the non-engagement position; When the driving side rotating body is stopped, the power transmission member is It is disposed at an initial position where it can be disposed at a joint position, and at the start of rotational driving of the driving side rotating body, it rotates relative to the driving side rotating body, and the cam portion causes the power transmission member to move from the non-engaging position. Guided to the engagement position, and when the drive-side rotator rotates, the power transmission member is held at the engagement position by moving radially outward by centrifugal force generated by rotating with the drive-side rotator. The device-side engaging portion has a convex shape protruding from the mounting surface, and penetrates the hole-like clutch-side engaging portion and is disposed at the initial position. The gist of the present invention is that the guide member is formed at a position engaged with the cam portion from the axial direction.

  According to this configuration, after the part located at one end portion in the axial direction of the clutch is disposed on the mounting surface while the device side engaging portion is engaged with the clutch side engaging portion, the cam portion is engaged with the device side engaging portion. By assembling the guide member while engaging the joint from the axial direction, the guide member can be automatically arranged at the initial position.

  According to a third aspect of the present invention, in the clutch assembly device according to the second aspect, the cam portion includes a first guide portion capable of disposing the power transmission member at the non-engagement position, and the first guide portion. A position shifted in the circumferential direction with respect to the guide portion and provided radially outside the first guide portion and extending to a second guide portion that disposes the power transmission member at the engagement position. The guide member extends in the axial direction. A cam groove having a through-groove shape, wherein the device-side engaging portion passes through the clutch-side engaging portion, and the first guide portion of the cam groove of the guide member disposed at the initial position The gist of the present invention is that it is formed at a position where it is inserted into.

  According to this configuration, since the cam groove penetrates the guide member in the axial direction, when the guide member is disposed on a part positioned at one end portion in the axial direction of the clutch disposed on the mounting surface. In addition, the device-side engaging portion can be easily inserted into the first guide portion of the cam groove from the axial direction. Then, the guide member is automatically placed at the initial position by placing the guide member on the part located at one end in the axial direction of the clutch while inserting the device side engaging portion into the first guide portion of the cam groove. can do.

  According to a fourth aspect of the present invention, the drive shaft and the driven shaft are disconnected when the drive shaft is not driven, and the drive shaft and the driven shaft are connected when driven from the drive shaft side. It has a mechanism to be connected, and operates to disconnect the driven shaft from the drive shaft when the drive shaft is not driven, and to connect the drive shaft and the driven shaft when driven from the drive shaft side. A mechanical clutch assembly method comprising: a base having a mounting surface on an upper surface; and a clutch side member formed on a component formed on the mounting surface and positioned at one end in an axial direction of the clutch. An assembly device having a device side engagement portion that engages with the concave and convex portions so as not to move relative to each other in the plane direction of the mounting surface is used for the joint portion. Position at one end of the clutch in the axial direction Placing the component on the placement surface, on the part, and its gist that gradually assembled other part constituting the clutch.

  According to this method, the device-side engaging portion is engaged with the clutch-side engaging portion formed on a component located at one end of the clutch in the axial direction (axial direction of the drive shaft), and the component is placed. When arranged on the surface, the component cannot be moved on the placement surface in the plane direction of the placement surface. Therefore, after the parts located at one end in the axial direction of the clutch are arranged on the placement surface, when the other parts of the clutch are assembled in order, the other parts with respect to the parts whose movement is restricted on the placement surface Since it is assembled, it becomes easy to assemble other parts. Therefore, the assembly | attachment property of a clutch can be improved.

  According to a fifth aspect of the present invention, in the clutch assembling method according to the fourth aspect of the present invention, the clutch is configured to be capable of rotating integrally with the driven shaft, the drive-side rotating body provided so as to rotate integrally with the drive shaft, and the driven shaft. The driven-side rotator is disposed between the drive-side rotator and the driven-side rotator in the radial direction, and is rotatably provided integrally with the drive-side rotator. A non-engagement position where the driven-side rotator is not engaged in the rotation direction, and an engagement where the drive-side rotator and the driven-side rotator are engaged in the rotation direction at a radially outer side than the non-engagement position. A power transmission member that is moved between positions; a cam portion that is engaged with the power transmission member and guides the movement of the power transmission member between the engagement position and the non-engagement position; When the driving side rotating body is stopped, the power transmission member is It is disposed at an initial position where it can be disposed at a joint position, and at the start of rotational driving of the driving side rotating body, it rotates relative to the driving side rotating body, and the cam portion causes the power transmission member to move from the non-engaging position. Guided to the engagement position, and when the drive-side rotator rotates, the power transmission member is held at the engagement position by moving radially outward by centrifugal force generated by rotating with the drive-side rotator. The device side engaging portion has a convex shape protruding from the mounting surface, penetrates the clutch side engaging portion, and is disposed at the initial position. The guide member is formed at a position to be engaged with the cam portion from the axial direction, and is positioned at one end portion of the clutch in the axial direction while inserting the device side engagement portion into the clutch side engagement portion. Place components on the mounting surface After the, it has as its gist the assembled on the components located the guide member the device-side engagement unit while engaged in the axial direction in the cam portion at one end in the axial direction of the clutch.

  According to this method, after the part located at one end of the clutch in the axial direction is placed on the mounting surface while the device side engaging portion is inserted into the clutch side engaging portion, the device is engaged with the cam portion. By assembling the guide member while engaging the portions from the axial direction, the guide member can be automatically arranged at the initial position.

  According to a sixth aspect of the present invention, in the method for assembling the clutch according to the fifth aspect, the cam portion includes a first guide portion capable of disposing the power transmission member at the disengaged position, and the first guide portion. A position shifted in the circumferential direction with respect to the guide portion and provided radially outside the first guide portion and extending to a second guide portion that disposes the power transmission member at the engagement position. The guide member extends in the axial direction. A cam groove having a through-groove shape, wherein the device-side engaging portion passes through the clutch-side engaging portion, and the first guide portion of the cam groove of the guide member disposed at the initial position The component located at one end in the axial direction of the clutch is placed on the mounting surface while the device side engaging portion is inserted into the clutch side engaging portion. After that, the device side engaging portion is placed on the first guide portion of the cam groove. That assembling the guide member while inserting the direction on the part located at one end portion in the axial direction of the clutch is set to its gist.

  According to this method, since the cam groove penetrates the guide member in the axial direction, when the guide member is arranged on a part located at one end portion in the axial direction of the clutch, the cam side engaging portion is cammed. It can be easily inserted into the first guide part of the groove from the axial direction. Then, the guide member is automatically initialized by placing the guide member on a part positioned at one end of the clutch in the axial direction while inserting the device side engaging portion into the first guide portion of the cam groove. Can be placed in position.

  According to a seventh aspect of the present invention, in the clutch assembling method according to the sixth aspect, the clutch is located at one end portion in the axial direction of the clutch and has a holding recess that opens in the axial direction and the holding recess. A holding case for guiding the movement of the guide member in the radial direction, the clutch-side engaging portion being formed in the bottom portion, and being accommodated in the holding recess, wherein the driving-side rotating body is disposed at the non-engaging position; A non-engagement recess into which the power transmission member is inserted and the power transmission member formed on both sides in the circumferential direction of the non-engagement recess and disposed in the engagement position from the rotation direction and driven side rotation A first drive plate that has a wedge surface that sandwiches the power transmission member together with a body and that has an axially open control groove and at least one pair of return projections that protrude in the axial direction and rotates integrally with the drive shaft And the pair of return convex portions Opened in the axial direction for accommodating a connecting spring disposed between at least one pair of return accommodating portions inserted from the axial direction and the pair of return accommodating portions and the pair of return convex portions. The spring accommodating portion and the power transmission member penetrate in the axial direction to guide the radial movement of the power transmission member, while restricting the circumferential movement of the power transmission member and bringing the power transmission member radially inward A second drive plate having an insertion engaging portion for accommodating a return spring to be urged and being axially superimposed on the first drive plate and connected to the first drive plate via the connection spring. The clutch is configured such that when the drive shaft is not driven, the first drive plate and the second drive plate cause the return projection and the return accommodating portion to urge the inner peripheral surface of the connection splice. The power transmission member biased radially inward by the return spring is maintained at a rotational position where circumferential positions of the non-engaging recess and the insertion engaging portion coincide with each other by the biasing force of the ring. The first drive plate is disposed in a non-engagement recess, and the first drive plate rotates relative to the second drive plate while compressing the connection spring against the urging force of the connection spring when the drive shaft is driven. Thus, the wedge surface abuts on the power transmission member, and the power transmission member is sandwiched between the wedge surface and the driven-side rotating body, and the device-side engagement portion is disposed on the clutch-side engagement portion. After the holding case is placed on the mounting surface while being inserted, the guide member is inserted into the holding recess while the device side engaging portion is inserted into the first guide portion of the cam groove from the axial direction. direction The first drive plate is overlapped with the guide member in the axial direction, and the power transmission member is urged radially inward by the return spring in the insertion engagement portion. The return spring is inserted into the insertion engagement portion, the power transmission member is inserted into the cam groove from the axial direction, and the return spring is paired after the return spring is accommodated in the spring accommodation portion. And inserting the power transmission member into the non-engaging recess from the axial direction and simultaneously superimposing the first drive plate on the second drive plate from the axial direction. It is a summary.

  According to this method, when the first drive plate is disposed on the second drive plate from the axial direction, the first drive plate is initially set by engaging the device side engaging portion with the first guide portion of the cam groove. The rotational position (circumferential direction in the circumferential direction) with respect to the guide member is inserted into the cam groove of the guide member disposed at the position and is urged radially inward by the return spring to be disposed at the non-engagement position. Position) is a position at which the power transmission member is disposed at the non-engagement position. When the power transmission member is disposed at the non-engagement position, that is, when the drive shaft is not driven and when the first drive plate is stopped, the connecting spring is formed between the return convex portion and the inner peripheral surface of the return accommodating portion. It cannot be shrunk between. Accordingly, when the first drive plate is disposed on the second drive plate from the axial direction, the connecting spring does not have to be contracted, so that the pair of return convex portions can be easily formed into the pair of return accommodating portions from the axial direction. Can be inserted. When the pair of return convex portions are inserted into the pair of return accommodating portions from the axial direction, a connecting spring is disposed between the pair of return convex portions, and the first drive plate has a rotational position with respect to the second drive plate. The circumferential position of the non-engaging recess and the circumferential position of the insertion engagement portion coincide with each other. Therefore, at the same time as inserting the pair of return convex portions into the pair of return accommodating portions from the axial direction, the power transmission member can be easily inserted from the axial direction into the non-engaging recess.

  The invention according to claim 8 is an initial state in which the drive shaft and the driven shaft are disconnected when the drive shaft is not driven, while the drive shaft and the driven shaft are connected when driven from the drive shaft side. It has a mechanism to be connected, and operates to disconnect the driven shaft from the drive shaft when the drive shaft is not driven, and to connect the drive shaft and the driven shaft when driven from the drive shaft side. An apparatus-side engagement portion formed on a mounting surface provided on an upper surface of a base provided in the clutch assembly device, which is a mechanical clutch and is located at one end of the clutch in the axial direction The gist is that a clutch-side engaging portion that engages with the concave and convex portions is formed.

  According to this configuration, the device-side engagement portion is engaged with the clutch-side engagement portion formed on the component located at one end of the clutch in the axial direction (axial direction of the drive shaft), and the component is placed. When arranged on the surface, the component cannot be moved on the placement surface in the plane direction of the placement surface. Therefore, after the parts located at one end in the axial direction of the clutch are arranged on the placement surface, when the other parts of the clutch are assembled in order, the other parts with respect to the parts whose movement is restricted on the placement surface Since it is assembled, it becomes easy to assemble other parts. Therefore, the assembly | attachment property of a clutch can be improved.

  ADVANTAGE OF THE INVENTION According to this invention, the assembly | attachment apparatus of the clutch which can improve the assembly | attachment property of a clutch, the assembly | attachment method of a clutch, and a clutch can be provided.

Sectional drawing of a motor with a clutch. The schematic block diagram of a sliding door opening / closing apparatus. (A) is sectional drawing (CC sectional drawing in FIG. 6) of a clutch, (b) is a partial sectional view of a clutch. The exploded perspective view of a clutch. The exploded perspective view of a clutch. Sectional drawing of a clutch (AA sectional drawing in Fig.3 (a)). Sectional drawing of a clutch (BB sectional drawing in Fig.3 (a)). (A) And (b) is sectional drawing of a clutch. (A) And (b) is sectional drawing of a clutch. (A) And (b) is sectional drawing of a clutch. (A) And (b) is sectional drawing of a clutch. The perspective view of the assembly | attachment apparatus of a clutch. Sectional drawing of the clutch in the middle of an assembly | attachment, and an assembly apparatus. The disassembled perspective view of a clutch and an assembly apparatus. Sectional drawing of the clutch in the middle of an assembly | attachment, and an assembly apparatus.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
As shown in FIG. 2, the motor 11 of the present embodiment shown in FIG. 1 is used as a drive source for a slide door opening / closing device 1 mounted on an automobile. The slide door opening / closing device 1 is disposed in a slide door 3 that is slidable along the side surface of the vehicle body 2. The slide door 3 is supported by a connector 5 connected to a guide rail 4 provided on the vehicle body 2. The connector 5 moves along the guide rail 4 by winding and feeding out the wire cable 6 by driving the motor 11. The sliding door 3 opens and closes the entrance / exit 2a formed in the vehicle body 2 by the movement of the connector 5.

  As shown in FIG. 1, the motor 11 is a so-called geared motor including a motor body 12 and a speed reduction unit 13. The motor body 12 includes a yoke housing 14, a pair of magnets 15, an armature 16, a brush holder 17, and a pair of brushes 18.

  The yoke housing 14 has a bottomed cylindrical shape, and a pair of magnets 15 are fixed to the inner peripheral surface thereof. A bearing 19 is provided at the center of the bottom of the yoke housing 14, and the bearing 19 pivotally supports the base end portion of the rotating shaft 20 (drive shaft) of the armature 16 disposed inside the yoke housing 14. ing.

  A flange-like flange portion 14b extending radially outward is formed in the opening portion 14a of the yoke housing 14. The flange portion 14b is connected and fixed to the gear housing 31 with a screw 21 in a state where the brush holder 17 is interposed between the flange portion 14b and an opening portion 31a of the gear housing 31 of the speed reduction portion 13 described later.

  The brush holder 17 substantially closes the opening 14 a of the yoke housing 14. The brush holder 17 includes, in the yoke housing 14, a bearing 22 that pivotally supports a tip side portion of the rotary shaft 20 and a pair of brushes 18 that are in sliding contact with a commutator 23 fixed to the rotary shaft 20. keeping. Further, in the brush holder 17, the connector portion 17 a protruding to the outside of the yoke housing 14 and the gear housing 31 is a portion to which a vehicle body side connector (not shown) extending from the vehicle body side is connected. A plurality of terminals 24 are exposed in the connection recess 17b of the connector portion 17a. These terminals 24 are inserted into the brush holder 17 and are electrically connected to a rotation sensor (a hall element 42 described later) provided in the motor 11, the brush 18, and the like. When the vehicle body side connector is connected to the connector portion 17a, the controller 25 and the motor 11 provided on the vehicle body side are electrically connected. As a result, power supply and output of sensor signals and the like can be performed between the motor 11 and the controller 25.

The speed reduction unit 13 includes a gear housing 31, a speed reduction mechanism 34 including a worm shaft 32 (driven shaft) and a worm wheel 33, an output shaft 35, and a clutch 50.
The gear housing 31 includes an opening 31a facing the opening 14a of the yoke housing 14, and the brush holder 17 is interposed between the openings 14a and 31a. The gear housing 31 is formed with a clutch housing portion 31b that is recessed from the opening 31a of the gear housing 31 in the axial direction. Further, the gear housing 31 accommodates a worm wheel 33 that is connected to the substantially cylindrical shaft accommodating cylinder portion 31c and extends in the axial direction from the bottom of the clutch accommodating portion 31b and accommodates the worm shaft 32, and is connected to the shaft accommodating cylinder portion 31c. A substantially circular wheel housing portion 31d is formed.

  Bearings 36 and 37 are disposed at both ends in the axial direction of the shaft accommodating cylinder portion 31c. The worm shaft 32 is coaxial with the rotary shaft 20 in a state where the tip end portion is supported by the bearing 37 (that is, the central axes of the rotary shaft 20 and the worm shaft 32 coincide with each other). As in the case of the shaft housing cylinder portion 31c. A worm portion 32 a having a screw tooth shape is formed at a substantially central portion in the axial direction of the worm shaft 32.

  A ring-shaped sensor magnet 41 magnetized in the circumferential direction between the worm portion 32 a and the portion supported by the bearing 37 in the worm shaft 32 is mounted so as to rotate integrally with the worm shaft 32. Has been. A hall element 42 that detects a change in the magnetic field associated with the rotation of the sensor magnet 41 is disposed in a portion of the shaft housing cylinder portion 31 c that faces the outer peripheral surface of the sensor magnet 41. The Hall element 42 is a signal for detecting rotation information such as the rotation speed and rotation speed of the worm shaft 32, and outputs a rotation detection signal that is a signal corresponding to a change in the magnetic field accompanying the rotation of the sensor magnet 41. . The controller 25 detects the opening / closing position and opening / closing speed of the slide door 3 based on the rotation detection signal.

  A disc-shaped worm wheel 33 that meshes with the worm portion 32a of the worm shaft 32 is rotatably accommodated in the wheel accommodating portion 31d. An output shaft 35 is fixed to the central portion of the worm wheel 33 in the radial direction so as to rotate integrally with the worm wheel 33. As shown in FIG. 2, a drive pulley (not shown) on which the wire cable 6 for opening and closing the slide door 3 is engaged is connected to the output shaft 35 so as to rotate integrally.

  As shown in FIG. 1, the clutch housing portion 31 b houses a mechanical clutch 50 that is disposed between the worm shaft 32 and the rotating shaft 20 and connects and disconnects the worm shaft 32 and the rotating shaft 20. Has been. As shown in FIG. 4, the clutch 50 includes a driving side rotating body 51, two roller members 52, two return springs 53, a holding case 54, two guide members 55, and a driven side rotating body 56.

The drive-side rotator 51 includes a first drive plate 61, a second drive plate 62 disposed so as to overlap the first drive plate 61, and two connecting springs 63.
The first drive plate 61 has a substantially disc shape, and has a cylindrical drive-side shaft coupling portion 61 a that protrudes in the axial direction at the center in the radial direction. A shaft coupling recess 61b is formed in the radial central portion of the drive side shaft coupling portion 61a (that is, the radial central portion of the first drive plate 61). The shaft coupling recess 61b extends along the axial direction from the axial end surface on the second driving plate 62 side in the driving side shaft coupling portion 61a toward the axial end surface on the driven side rotating body 56 side in the first driving plate 61. The shape seen from the axial direction forms a two-sided width shape. As shown in FIG. 3A, the distal end portion of the rotating shaft 20 has a two-sided width shape corresponding to the shaft coupling recess 61b, and the distal end portion of the rotating shaft 20 is inserted into the shaft coupling recess 61b. Then, the first drive plate 61 is engaged with the distal end portion of the rotation shaft 20 in the rotation direction, and can rotate integrally with the rotation shaft 20. In addition, the connected rotating shaft 20 and the first drive plate 61 are coaxial (the respective central axes coincide with each other).

  Further, a plate accommodating portion 61c protruding in the axial direction is formed at the radial center portion of the axial end surface of the first driving plate 61 opposite to the second driving plate 62 (that is, the driven side rotating body 56 side). Has been. The plate accommodating portion 61c has an annular shape. A disc-shaped thrust receiving plate 71 is accommodated in the plate accommodating portion 61c.

  As shown in FIGS. 4 and 6, two control grooves 61 d are formed on the outer peripheral edge portion of the first drive plate 61. The two control grooves 61d are formed at two locations in the first drive plate 61 that are equiangularly spaced in the circumferential direction (180 ° intervals in the present embodiment). Each control groove 61d is recessed radially outward from the outer peripheral edge of the first drive plate 61, thereby opening radially outward. Each control groove 61d is recessed in the axial direction from the second drive plate 62 side, and opens only on one side in the axial direction (that is, the second drive plate 62 side). In FIG. 6, the cross section of the first drive plate 61 is not hatched in order to prevent the drawing from being complicated.

  The central portion in the circumferential direction of each control groove 61d is a non-engaging recess 61e that is deeply recessed in the radial direction. The inner peripheral surface of the non-engaging recess 61e is parallel to the axial direction and curved in an arc shape. By forming the non-engaging recess 61e, a pair of engaging recesses 61f that are shallower in the radial direction than the non-engaging recess 61e are formed on both sides of each control groove 61d in the circumferential direction of the non-engaging recess 61e. Is formed. The inner peripheral surface of each engaging recess 61f is a wedge surface 61g that is parallel to the axial direction and curved in an arc shape. The curvature of each wedge surface 61g is equal to the curvature of the inner peripheral surface of the non-engaging recess 61e, and the center of curvature of each wedge surface 61g is more than the center of curvature of the inner peripheral surface of the non-engaging recess 61e. 61 is located radially outside. Further, when viewed from the axial direction of the first drive plate 61, each control groove 61d is axisymmetric with a straight line (not shown) extending in the radial direction passing through the center in the circumferential direction of each control groove 61d as an axis of symmetry. .

  Further, two pairs of return convex portions 61 h are formed to project from the end surface of the first drive plate 61 in the axial direction on the second drive plate 62 side. The two pairs of return convex portions 61h are two locations that are equiangularly spaced in the circumferential direction (180 ° intervals in the present embodiment) in the first drive plate 61, and are between the control grooves 61d that are adjacent in the circumferential direction. Each is formed at a position. The pair of return convex portions 61h are formed at a distance in the circumferential direction of the first drive plate 61 and have a substantially rectangular parallelepiped shape protruding in the axial direction.

  As shown in FIGS. 3A and 5, the second drive plate 62 has a disk shape. The second drive plate 62 includes a disc-shaped guide portion 62a and a substantially disc-shaped accommodation portion 62b that protrudes from the guide portion 62a toward the first drive plate 61 along the axial direction. The guide part 62a and the accommodating part 62b are formed coaxially. Further, the outer diameter of the guide portion 62 a is formed larger than the outer diameter of the first drive plate 61, and the outer diameter of the housing portion 62 b is formed substantially equal to the outer diameter of the first drive plate 61. An insertion hole 62c penetrating in the axial direction is formed in the radial center of the second drive plate 62. The insertion hole 62c has a circular shape when viewed from the axial direction, and the inner diameter thereof is set to be approximately equal to the outer diameter of the drive side shaft coupling portion 61a. Moreover, the division | segmentation convex part 62d which protruded to radial inside is formed in the internal peripheral surface of the penetration hole 62c. The partition convex portion 62d extends in a protrusion along the circumferential direction of the insertion hole 62c and has an annular shape. Further, the partitioning convex portion 62d is formed at a position closer to the guide portion 62a side than the central portion in the axial direction of the insertion hole 62c. The axial length of the portion of the insertion hole 62c closer to the accommodating portion 62b than the partition convex portion 62d is formed to be substantially equal to the axial length of the drive side shaft connecting portion 61a.

  As shown in FIGS. 5 and 6, a pair of spring accommodating portions 62e is formed on the outer peripheral side of the insertion hole 62c in the accommodating portion 62b. The two spring accommodating portions 62e are formed by recessing the accommodating portion 62b in the axial direction from the end surface in the axial direction on the first drive plate 61 side in the accommodating portion 62b. And each spring accommodating part 62e penetrates the accommodating part 62b in the axial direction, and is recessed in the axial direction to the axial end of the accommodating part 62b side in the guide part 62a. The pair of spring accommodating portions 62e extend along the circumferential direction of the clutch 50 (same as the rotation direction of the first drive plate 61 and the second drive plate 62) and have an arc shape surrounding the insertion hole 62c. There is no. Furthermore, the two spring accommodating portions 62e have a symmetrical shape with the insertion hole 62c interposed therebetween. The springs 62e receive the connecting springs 63, respectively. Each connection spring 63 is a compression coil spring.

  Further, a pair of return accommodating portions 62f are formed on both sides of each spring accommodating portion 62e in the circumferential direction. That is, two pairs of return accommodating portions 62f are formed in the accommodating portion 62b. The return accommodating portions 62f that form a pair on both sides in the circumferential direction of each spring accommodating portion 62e are formed by recessing the accommodating portion 62b in the axial direction from the axial end surface of the accommodating portion 62b on the first drive plate 61 side. ing. The radial width of each return accommodating portion 62f is narrower than the radial width of the spring accommodating portion 62e, and is substantially equal to the radial width of the return convex portion 61h. Further, the circumferential width of each return accommodating portion 62f is formed longer than the circumferential width of the return convex portion 61h. Further, the axial depth of each return accommodating portion 62f is formed to be equal to the axial depth of the spring accommodating portion 62e and substantially equal to the axial length of the return convex portion 61h. Moreover, the internal space of the spring accommodating part 62e and the internal space of the return accommodating part 62f of the both sides of the circumferential direction are connected.

  The accommodating portion 62b has two locations between the return accommodating portions 62f adjacent in the circumferential direction, and two locations that are equiangularly spaced in the circumferential direction (180 ° intervals in the present embodiment) in the accommodating portion 62b. Each of the guide recesses 62g is formed. Each guide recess 62g is formed by recessing the accommodating portion 62b along the radial direction from the outer peripheral edge of the accommodating portion 62b. Each guide recess 62g opens outward in the radial direction and penetrates the accommodating portion 62b in the axial direction. In the present embodiment, each guide recess 62g has a U shape whose shape viewed from the axial direction opens radially outward. Further, the circumferential width of each guide recess 62g is formed substantially equal to the circumferential width of the non-engaging recess 61e.

  The guide portion 62a is formed with insertion engaging portions 62h at two locations adjacent to the two guide recess portions 62g in the axial direction. The two insertion engaging portions 62h are formed at equal angular intervals in the circumferential direction (180 ° intervals in the present embodiment). Each insertion engagement portion 62h is formed by recessing the guide portion 62a in the axial direction from the end surface of the guide portion 62a opposite to the housing portion 62b in the axial direction. Further, as shown in FIGS. 3A and 6, each insertion engaging portion 62h is radially outer than the guide recess 62g from a position adjacent to the radially inner end of the guide recess 62g in the axial direction ( It has a groove shape extending along the radial direction to a position that is radially outward from the outer peripheral edge of the housing portion 62b. The circumferential width of each insertion engaging portion 62h is narrower than the circumferential width of the guide recess 62g. A portion of each insertion engagement portion 62h adjacent to the guide recess 62g in the axial direction penetrates the guide portion 62a in the axial direction and communicates with the guide recess 62g. A portion of each insertion engagement portion 62h that is radially outward from the guide recess 62g does not penetrate the guide portion 62a in the axial direction and has a recess shape.

  As shown in FIGS. 5 and 6, the second drive plate 62 is formed with insertion paths 62k on the radially outer side of the spring accommodating portions 62e. Each insertion path 62k is linear along the radial direction from the central portion in the circumferential direction of each spring accommodating portion 62e to the outer peripheral surface of the second drive plate 62 (that is, the outer peripheral surface of the accommodating portion 62b and the outer peripheral surface of the guide portion 62a). It extends to. Each insertion path 62k extends so as to be orthogonal to the expansion / contraction direction (illustrated by an arrow β in FIG. 6) of the connecting spring 63 disposed in the spring accommodating portion 62e. In this embodiment, the expansion / contraction direction of the connection spring 63 is the same as the rotation direction of the second drive plate 62 when the clutch 50 is operated. Further, as shown in FIGS. 3A and 3B, each insertion path 62k opens in the axial direction toward the first drive plate 61, and in the radial direction, the inside of the spring accommodating portion 62e and An opening is formed on the outer peripheral side of the second drive plate 62. Each insertion path 62k communicates with a spring accommodating portion 62e located on the radially inner side. Furthermore, the bottom surface of each insertion path 62k has a planar shape orthogonal to the axial direction and is flush with the bottom surface of the spring accommodating portion 62e. Further, as shown in FIGS. 3B and 6, the length in the circumferential direction of each insertion path 62 k is formed longer than the length of the coupling spring 63 compressed to the maximum.

  As shown in FIGS. 3 to 6, the first drive plate 61 and the second drive plate 62 as described above have a pair of return convex portions 61h inserted into a pair of return accommodating portions 62f. The drive side shaft coupling portion 61a is overlapped in the axial direction so as to be inserted into the insertion hole 62c. In the drive-side rotator 51, the first drive plate 61 and the second drive plate 62 are arranged on the same axis (so that their center axes coincide with each other). Further, the coupling springs 63 are arranged between the pair of return convex portions 61 h, whereby the first drive plate 61 and the second drive plate 62 are coupled in the rotational direction via the coupling springs 63. . The first drive plate 61 and the second drive plate 62 can rotate relative to each other while resisting the urging force of the coupling spring 63 with the center axis of each other as the center of rotation. The first drive plate 61 and the second drive plate 62 are held at a predetermined relative rotational position by the urging force of the connection spring 63. In the present embodiment, the connection spring 63 has a relative rotational position between the first drive plate 61 and the second drive plate 62, a circumferential position of the control groove 61d (non-engaging recess 61e), and a circumferential direction of the guide recess 62g. The first drive plate 61 (returning convex portion 61h) is urged so as to be held at a neutral position where the position matches. Therefore, as shown in FIG. 6, when the rotary shaft 20 is not driven, when the drive side rotary body 51 is viewed from the axial direction, the circumferential center of the two control grooves 61 d and the circumferential direction of the two guide recesses 62 g are displayed. The center matches.

  As shown in FIG. 3A, FIG. 5 and FIG. 6, each roller member 52 includes a connecting portion 52a, a power transmission portion 52b formed integrally with the connecting portion 52a, and also integrated with the connecting portion 52a. And a cam engaging portion 52c formed on the surface.

  The connecting portion 52a has a plate shape in which the shape seen from the axial direction forms a track shape. The width of the connecting portion 52a in the short direction is formed to be substantially equal to the width in the circumferential direction of the guide recess 62g. The width in the longitudinal direction of the connecting portion 52a is formed to be substantially equal to the length in the radial direction of the guide recess 62g. Then, both end surfaces of the connecting portion 52a in the longitudinal direction have an arc shape having the same curvature as the inner peripheral surface of the non-engaging recess 61e. Further, the thickness of the connecting portion 52a is substantially equal to the axial width of the guide recess 62g (that is, the axial thickness of the accommodating portion 62b).

  The power transmission portion 52b is one end surface in the thickness direction (axial direction) of the connecting portion 52a, and one end portion in the longitudinal direction of the connecting portion 52a (end portion on the radially outer side when assembled as the clutch 50). It extends along the thickness direction (axial direction) of the connection part 52a from the part which becomes. The power transmission portion 52b has a cylindrical shape, and the axial length thereof is formed substantially equal to the axial length of the control groove 61d. In addition, the curvature of the cylindrical outer peripheral surface of the power transmission portion 52b is equal to the curvature of the inner peripheral surface of the non-engaging recess 61e and the wedge surface 61g.

  The cam engaging portion 52c is the other end surface in the thickness direction (axial direction) of the connecting portion 52a, and the other end portion in the longitudinal direction of the connecting portion 52a (the radially inner end when assembled as the clutch 50). Part) is extended along the thickness direction (axial direction) of the connecting part 52a. The cam engagement portion 52c is formed in a columnar shape having a smaller diameter than the power transmission portion 52b, and the axial length thereof is longer than the axial thickness of the guide portion 62a. A flat biasing surface 52d is formed at the base end of the cam engagement portion 52c. The urging surface 52d is parallel to the axial direction and faces one end side in the longitudinal direction of the connecting portion 52a (that is, the end portion side in the longitudinal direction on the side where the power transmission portion 52b is formed in the connecting portion 52a). Yes.

  The two roller members 52 as described above are inserted into the two control grooves 61d of the first drive plate 61 with the power transmission portions 52b inserted into the two guide recesses 62g of the second drive plate 62, respectively. The connecting portion 52a is assembled to the drive side rotating body 51 so as to be inserted. Further, the two roller members 52 are arranged with respect to the drive-side rotating body 51 so that the cam engagement portions 52c are inserted into the two insertion engagement portions 62h of the second drive plate 62, respectively. In addition, as for the connection part 52a inserted in the guide recessed part 62g, the longitudinal direction corresponds with the radial direction, and the thickness direction corresponds with the axial direction. Further, in each roller member 52, the cam engagement portion 52c is located radially inward of the power transmission portion 52b, and the urging surface 52d faces the radially outer side. Each roller member 52 slides the outer peripheral surface of the coupling portion 52a on the inner peripheral surface of the guide recess 62g, and simultaneously slides the outer peripheral surface of the cam engaging portion 52c on the inner peripheral surface of the insertion engaging portion 62h. It is possible to move in the radial direction with respect to the drive-side rotator 51. Therefore, the roller member 52 is guided in the radial movement by the guide recess 62g and the insertion engagement portion 62h, while the circumferential movement with respect to the second drive plate 62 is restricted by the guide recess 62g and the insertion engagement portion 62h. Is done. Further, the roller member 52 is engaged with the second drive plate 62 in the rotation direction by the coupling portion 52a being disposed in the guide recess 62g and the cam engagement portion 52c being inserted into the insertion engagement portion 62h. The second drive plate 62 and the second drive plate 62 can rotate together.

  Each insertion engagement portion 62h houses a return spring 53 at a position on the radially outer side of the cam engagement portion 52c. The return spring 53 of this embodiment is a compression coil spring. Each return spring 53 abuts against a biasing surface 52d formed on the cam engagement portion 52c, and biases the roller member 52 radially inward along the radial direction.

  As shown in FIGS. 3A, 5 and 7, the holding case 54 includes a disc-shaped cover portion 54a, an insertion portion 54b formed integrally with the cover portion 54a, the cover portion 54a and It is comprised from a pair of guide holding | maintenance part 54c integrally formed with the insertion part 54b.

  The cover portion 54a has an outer diameter equal to the outer diameter of the guide portion 62a of the second drive plate 62. And the cylindrical insertion part 54b is formed in the center part of the radial direction of this cover part 54a. The insertion portion 54b extends along the axial direction from the axial end surface of the cover portion 54a on the second drive plate 62 side, and is formed coaxially with the cover portion 54a. The outer diameter of the insertion portion 54b is formed substantially equal to the inner diameter of the insertion hole 62c. Further, the insertion hole 54d formed in the central portion in the radial direction of the insertion portion 54b penetrates the insertion portion 54b and the cover portion 54a in the axial direction, and the inner diameter of the insertion hole 54d is equal to the outer diameter of the rotating shaft 20. It is formed approximately equally. Further, the length in the axial direction of the portion protruding in the axial direction from the guide holding portion 54 c at the distal end side portion of the insertion portion 54 b is longer than the guide portion 62 a than the partition convex portion 62 d in the insertion hole 62 c of the second drive plate 62. It is formed approximately equal to the axial length of the side portion. The holding case 54 is inserted into the insertion hole 62c from the guide portion 62a side at the tip end portion of the insertion portion 54b (that is, the portion protruding in the axial direction from the guide holding portion 54c), whereby the drive side rotating body 51 is provided. With respect to each other, the center axis of each other is assembled so as to be able to rotate with each other. Further, the holding case 54 is coaxial with the drive-side rotator 51 (the center axes of the holding cases 54 coincide with each other). The rotating shaft 20 is inserted into the shaft coupling recess 61b of the first drive plate 61 through the inside of the insertion hole 54d and the partition projection 62d.

  The pair of guide holding portions 54c are equiangularly spaced (180 ° intervals in this embodiment) in the circumferential direction on the outer peripheral surface of the insertion hole 54d on the axial end surface of the cover portion 54a on the second drive plate 62 side. The two portions extend radially outward along the radial direction, and then extend to both sides in the circumferential direction along the outer peripheral edge of the cover portion 54a. Each guide holding portion 54c is substantially T-shaped when viewed from the axial direction. By forming the guide holding portion 54c as described above, the holding case 54 is formed with holding recesses 54e at two locations between the two guide holding portions 54c and on both sides in the diameter direction of the insertion portion 54b. ing. Each holding recess 54e opens to the radially outer side and one side in the axial direction (second drive plate 62 side).

  A pair of regulating convex portions 54g is formed in the opening portion 54f that opens to the outside in the radial direction of each holding concave portion 54e. In each holding recess 54e, a pair of restricting projections 54g protrudes toward the inside of the guide recess 62g so as to narrow the circumferential width of the holding recess 54e. And the front-end | tip surface of the regulation convex part 54g which makes a pair is the guide surface 54h which makes mutually parallel in the circumferential direction. Each guide surface 54h is formed in parallel with an axial direction and in parallel with a straight line (not shown) passing through the center of the holding case 54 and passing through the center in the circumferential direction of the guide recess 62g.

  A clutch-side engagement portion 54k is formed at the bottom of each holding recess 54e in the axial direction, that is, at a portion of the cover portion 54a exposed to the inside of the holding recess 54e. The two clutch side engaging portions 54k are formed between two guide holding portions 54c and at two locations on both sides in the diameter direction of the insertion portion 54b. Each clutch-side engagement portion 54k is formed at the center in the circumferential direction of each holding recess 54e. Each clutch side engagement portion 54k has a hole shape penetrating the cover portion 54a in the axial direction, and the shape viewed from the axial direction is circular. Moreover, chamfering is given to the opening edge part of the outer side of the holding | maintenance recessed part 54e in each clutch side engaging part 54k.

  The guide members 55 are accommodated in the two holding recesses 54e, respectively. Each guide member 55 is a weight having a weight on which an inertial force acts. The axial thickness of each guide member 55 is formed to be equal to the axial width of the holding recess 54e. The end surface on the radially inner side of each guide member 55 is the inner surface 54m on the radially inner side of the holding recess 54e (that is, the outer peripheral surface of the insertion portion 54b and the portion extending in the radial direction of the cover portion 54a in the guide holding portion 54c). The shape corresponding to the surface composed of the side surfaces). Further, locking projections 55a are formed to project from both end faces of each guide member 55 in the circumferential direction. Each locking projection 55a is formed at the end on the inner surface 54m side of the holding recess 54e on both end surfaces in the circumferential direction of each guide member 55, and faces the regulation projection 54g. Further, both the circumferential end surfaces of each guide member 55 and the portions on the radially outer side (the opening 54 f side of the holding recess 54 e) than the locking projection 55 a are planar guided surfaces 55 b. Yes. The two guided surfaces 55b formed on each guide member 55 are parallel to the axial direction and parallel to each other. Further, in each guide member 55, the interval between the two guided surfaces 55b is formed substantially equal to the interval between the guide surfaces 54h forming a pair in each holding recess 54e. Further, the radially outer end surface 55c of each guide member 55 has an arc shape with the same curvature as the outer peripheral surface of the cover portion 54a.

  Such a guide member 55 is disposed between a pair of guide surfaces 54 h in the holding recess 54 e and is held by the holding case 54. Each guide member 55 is movable in the radial direction while bringing the guided surface 55b into sliding contact with the guide surface 54h. Accordingly, the guide member 55 is guided to move in the radial direction by the guide surface 54h, while the guide surface 54h restricts the movement in the circumferential direction with respect to the holding case 54. Furthermore, the guide member 55 can rotate integrally with the holding case 54 around the central axis of the holding case 54. In addition, each guide member 55 is disposed on the innermost radial direction within the moving range of the guide member 55 when the radially inner end surface is in contact with the inner side surface 54m of the holding recess 54e. Is the initial position. Each guide member 55 is movable outward in the radial direction until the locking projection 55a abuts on the regulation projection 54g. Each guide member 55 is arranged on the outermost radial direction within the movement range when the locking projection 55a is in contact with the regulation projection 54g. Each guide member 55 has the center of curvature of the radially outer end surface 55c coincides with the center of the holding case 54 when the locking projection 55a abuts on the regulation projection 54g.

  Each guide member 55 is formed with a cam groove 55d. As shown in FIG. 7, the cam groove 55 d has a groove shape extending substantially along the circumferential direction of the holding case 54 (or the second drive plate 62), and penetrates each guide member 55 in the axial direction. . Further, the cam groove 55d extends from the central portion in the circumferential direction (substantially the same as the longitudinal direction of the cam groove 55d) toward the radially outer side as it goes to both ends in the circumferential direction. Further, the width of the cam groove 55d (width in the short direction) is formed substantially equal to the outer diameter of the cam engaging portion 52c of the roller member 52. In the cam groove 55d of each guide member 55, the center in the circumferential direction (longitudinal direction) is the first guide portion P1, and both end portions in the circumferential direction (longitudinal direction) are the second guide portions P2. . The first guide portion P1 is located at the center of the guide member 55 in the circumferential direction. In a state where each guide member 55 is accommodated in the holding recess 54e, the first guide portion P1 is located on the innermost radial direction in the cam groove 55d, while the second guide portion P2 is located on the outermost radial direction in the cam groove 55d. Located in.

  Further, when viewed from the axial direction, the cam groove 55d of the present embodiment is formed in line symmetry with a straight line (not shown) extending in the radial direction passing through the first guide portion P1 as an axis of symmetry. Each cam groove 55d has an arc shape that swells radially outward from the first guide portion P1 to the second guide portion P2. And the shape which looked at the cam groove 55d from the axial direction has comprised the substantially V shape opened to a radial direction outer side. Furthermore, the cam groove 55d is provided with a pair of cam surfaces S facing in the radial direction (the short direction of the cam groove 55d). The cam surface S is an inner peripheral surface of the cam groove 55d and extends from the first guide portion P1 to the second guide portions P2 on both sides in the circumferential direction (longitudinal direction).

  Here, as shown in FIGS. 3A, 5, and 7, the two clutch side engaging portions 54 k formed on the holding case 54 are arranged in the cover portion 54 a with the two clutches disposed at the initial position. It is formed at a position aligned with the cam groove 55d of the guide member 55 in the axial direction. Further, the two clutch side engaging portions 54k are respectively formed at positions aligned with the first guide portion P1 of the cam groove 55d in the axial direction. The diameter of each clutch side engaging portion 54k is formed to be slightly larger than the width of the cam groove 55d.

  As shown in FIGS. 3A and 7, the cam grooves 55d of the two guide members 55 respectively accommodated in the two holding recesses 54e are provided on the distal end side of the cam engaging portions 52c of the two roller members 52. Each part is inserted. By inserting the cam engagement portion 52c into the cam groove 55d, the roller member 52 is engaged with the cam groove 55d, and the movement along the longitudinal direction of the cam groove 55d with respect to the guide member 55 is guided. The movement of the cam groove 55d in the width direction is restricted. When the guide member 55 held by the holding case 54 and the drive-side rotator 51 are rotated relative to each other about the center axis of the drive-side rotator 51, the roller member 52 and the guide member 55 (cam groove 55d) are rotated. ) And relative rotation. Then, the roller member 52 is guided by the insertion engaging portion 62h in accordance with the radial position of the guide member 55 by the cam mechanism including the cam groove 55d and the cam engaging portion 52c, and the driving-side rotating body 51 in the radial direction. Is moved along. At this time, the roller member 52 is guided to move in the radial direction by the outer peripheral surface of the cam engaging portion 52c being in sliding contact with the cam surface S.

  As described above, the clutch 50 includes the cam groove 55d formed in the guide member 55 and the roller member 52 that engages with the cam groove 55d. As the guide member 55 and the drive-side rotator 51 rotate relative to each other, And a cam mechanism for guiding the movement of the roller member 52 in the radial direction by the cam groove 55d. As shown in FIGS. 6 and 7, with the guide member 55 disposed at the initial position, the cam engagement portion 52c is moved to the first guide of the cam groove 55d by the relative rotation of the drive side rotating body 51 and the guide member 55. When arranged in the part P1, the power transmission part 52b is arranged in the non-engaging recess 61e and arranged at the innermost radial direction within the radial movement range. The arrangement position of the roller member 52 at this time corresponds to a non-engaging position where the driving side rotating body 51 and a driven side rotating body 56 described later are not engaged in the rotation direction. That is, the initial position of the guide member 55 is a position where the roller member 52 can be disposed at the non-engagement position by the cam groove 55d. In the cam mechanism, the roller member 52 is disposed at the non-engagement position by disposing the cam engagement portion 52c in the first guide portion P1 of the cam groove 55d of the guide member 55 disposed at the initial position as described above. This is the initial state where the rotary shaft 20 and the worm shaft 32 are disconnected.

  On the other hand, as shown in FIG. 8B, with the guide member 55 disposed at the initial position, the cam engagement portion 52c is moved into the first position of the cam groove 55d by the relative rotation of the drive side rotating body 51 and the guide member 55. When arranged in the two guide portions P2, as shown in FIG. 8A, the power transmission portion 52b is arranged on the outermost radial direction within the radial movement range. At this time, a part of the power transmission part 52b protrudes radially outward from the outer peripheral surface of the first drive plate 61, and the arrangement position of the roller member 52 at this time depends on the drive-side rotating body 51 and that described later. This corresponds to an engagement position where the driven-side rotating body 56 is engaged in the rotation direction. The cam engaging portion 52c moves radially outward when moving from the first guide portion P1 to the second guide portion P2. Accordingly, the cam engagement portion 52c moves from the first guide portion P1 to the second guide portion P2 while contracting the return spring 53 in the radial direction against the urging force of the return spring 53. In the cam mechanism, the roller member 52 is disposed at the engagement position by disposing the cam engagement portion 52c in the second guide portion P2 of the cam groove 55d of the guide member 55 disposed at the initial position as described above. The state is a connected state in which the rotary shaft 20 and the worm shaft 32 are connected. In the connected cam mechanism, the return spring 53 urges the radially inner cam surface S radially inward through the cam engaging portion 52c of the roller member 52, Return to the initial state.

  The clutch 50 is constituted by a guide member 55 with which a roller member 52 is engaged, and the roller 50 is moved by the guide member 55 moved radially outward by the centrifugal force generated by rotating with the drive side rotating body 51. A holding mechanism for holding 52 in the engaged position is provided. The rotational force of the drive-side rotator 51 is transmitted from the roller member 52 urged radially inward by the return spring 53 to the guide member 55. In this holding mechanism, as shown in FIG. 8B, the state where the guide member 55 is disposed at the initial position is an initial state where the rotary shaft 20 and the worm shaft 32 are disconnected. Then, after the roller member 52 is moved to the second guide portion P2 by the cam mechanism and placed at the engagement position, the guide member 55 is guided to the drive side rotating body 51 while being moved radially outward by centrifugal force. When the member 55 is relatively rotated, the guide member 55 is rotated in the circumferential direction with respect to the roller member 52 as shown in FIG. At this time, although the cam engagement portion 52c moves from the second guide portion P2 to the first guide portion P1, the cam groove 55d is moved radially outward as the guide member 55 moves radially outward. The roller member 52 is maintained in a state of being disposed at the engagement position. In the holding mechanism, the guide member 55 is arranged at the outermost radial direction in the moving range as described above, and the cam engagement portion 52c is arranged at the first guide portion P1 of the cam groove 55d while the guide member 55 is arranged. A state in which the roller member 52 is held at the engagement position by 55 is a connection state in which the rotary shaft 20 and the worm shaft 32 are connected. The holding mechanism in the connected state is configured such that the return spring 53 biases the radially inner cam surface S radially inward along the radial direction via the cam engaging portion 52c of the roller member 52. Return to the initial state. In addition, since the radial movement of the guide member 55 is guided by the holding case 54, the holding mechanism functions well. Further, the guide member 55 receives the urging force of the return spring 53 when the drive side rotating body 51 is stopped, and moves radially inward while being guided by the holding case 54, so that the holding mechanism is returned to the initial state. It is done smoothly.

  As shown in FIG. 3A, the driven side rotating body 56 includes a bottomed cylindrical driven cylindrical portion 56a and a driven side shaft connecting portion 56b formed integrally with the driven cylindrical portion 56a. ing. As shown in FIG. 1, the driven-side rotating body 56 is accommodated in the clutch accommodating portion 31b so that the opening of the driven cylindrical portion 56a faces the motor main body 12 side.

  As shown in FIG. 3A, the outer diameter of the driven cylindrical portion 56 a is equal to the outer diameters of the second drive plate 62 and the holding case 54. Further, the inner depth of the driven side rotating body 56 is substantially equal to the axial length of the first drive plate 61. As shown in FIG. 6, on the inner peripheral surface of the cylindrical side wall portion 56c of the driven cylindrical portion 56a, there are two circumferentially equiangular intervals (180 ° intervals in the present embodiment), radially inward. A protruding control projection 56d is formed. In the driven-side rotator 56, the inner diameter of the portion where the control convex portion 56 d is formed is slightly larger than the outer diameter of the first drive plate 61. And as shown to Fig.3 (a), the 1st drive plate 61 and the accommodating part 62b are accommodated in the inside of the driven cylindrical part 56a. The outer periphery of the first drive plate 61 accommodated in the driven cylindrical portion 56a faces the control convex portion 56d in the radial direction. Further, the power transmission portion 52 b of the roller member 52 is disposed between the first drive plate 61 and the side wall portion 56 c of the driven side rotating body 56 that are opposed in the radial direction. The drive-side rotator 51, the holding case 54, and the driven-side rotator 56 are arranged on the same axis (so that the central axes coincide). Further, the end of the side wall portion 56 c on the opening side of the driven cylindrical portion 56 a faces the outer peripheral edge portion of the guide portion 62 a of the second drive plate 62 in the axial direction.

  As shown in FIG. 6, by forming the control convex portion 56d on the inner peripheral surface of the side wall portion 56c, the control concave portion 56e is formed between the control convex portions 56d adjacent to each other in the circumferential direction inside the driven-side rotating body 56. Is formed. The two control recesses 56e are formed at equal angular intervals in the circumferential direction (180 ° intervals in the present embodiment). The circumferential width of the control recess 56e is formed wider than the outer diameter of the power transmission portion 52b. In each control recess 56e, a pair of transmissions in which the inner side surfaces (the end surfaces in the circumferential direction of the control projection 56d) on both sides in the circumferential direction of the control recess 56e become wider in the circumferential direction toward the radially inner side. A surface 56f is formed. Each transmission surface 56f is parallel to the axial direction and has an arc shape with a curvature substantially equal to the curvature of the outer peripheral surface of the power transmission portion 52b.

  Further, as shown in FIG. 3A, a plate recess 56g that opens to the inside of the driven cylindrical portion 56a is formed in the center of the bottom of the driven cylindrical portion 56a. The plate recessed portion 56g is deeply recessed in the axial direction from the bottom of the driven cylindrical portion 56a in the axial direction to the driven side shaft connecting portion 56b. A disc-shaped thrust receiving plate 72 is accommodated in the bottom of the plate recess 56g. A thrust receiving ball 73 is accommodated in the plate recess 56g. The thrust receiving plate 73 and the thrust receiving plate 72 are in contact with the thrust receiving ball 73 from both sides in the axial direction. The thrust receiving plates 71 and 72 and the thrust receiving ball 73 both receive the thrust load of the rotating shaft 20.

  The driven side shaft coupling portion 56b extends along the axial direction from the center of the bottom of the driven cylindrical portion 56a and protrudes to the outside of the driven cylindrical portion 56a. Further, as shown in FIG. 1, the driven side shaft coupling portion 56 b has a cylindrical shape, and the outer diameter thereof is equal to the outer diameter of the worm side shaft coupling portion 32 b provided at the base end portion of the worm shaft 32. The size is assumed. In addition, the shaft connection recessed part 32c is formed in the base end surface (upper end surface in FIG. 1) of the worm side shaft connection part 32b in two places which become equiangular intervals (120 degree intervals) in the circumferential direction. FIG. 1 shows only one of the shaft coupling recesses 32c. Each of the shaft coupling recesses 32c is recessed along the axial direction of the worm shaft 32 from the base end surface of the worm side shaft coupling portion 32b, and on the base end side (upper side in FIG. 1) and radially outward of the worm shaft 32. It is open.

  As shown in FIG. 5, a shaft coupling convex portion 56h corresponding to the shaft coupling concave portion 32c (see FIG. 1) protrudes from the tip of the driven side shaft coupling portion 56b. The shaft coupling convex portion 56h is an outer peripheral edge at the tip of the driven side shaft coupling portion 56b, and projects in the axial direction from three locations that are equiangularly spaced in the circumferential direction (120 ° intervals in the present embodiment). Further, each of the shaft coupling convex portions 56h has a circumferential width, a radial width, and an axial length that are the circumferential width, radial width, and axial direction of the shaft coupling concave portion 32c (see FIG. 1). The depth of each is formed equal. Then, as shown in FIGS. 1 and 3A, by inserting the three shaft connecting convex portions 56h into the three shaft connecting concave portions 32c of the worm shaft 32, the driven side rotating body 56 and the worm shaft are inserted. 32 are engaged with each other in the rotation direction, and can rotate integrally. The driven-side shaft coupling portion 56b protrudes from the bottom of the clutch housing portion 31b into the shaft housing tube portion 31c and is pivotally supported by a bearing 36 disposed on one end side of the shaft housing tube portion 31c.

  In addition, the driven-side rotator 56 and the drive-side rotator 51 constitute a clamping mechanism that clamps the roller member 52 disposed at the engagement position. In this clamping mechanism, as shown in FIG. 6 or FIG. 8A, the power transmission portion 52b of the roller member 52 is formed by the wedge surface 61g of the driving side rotating body 51 and the transmission surface 56f of the driven side rotating body 56. The state in which the rotating shaft 20 and the worm shaft 32 are disconnected is a state in which the rotating shaft 20 and the worm shaft 32 are disconnected. On the other hand, as shown in FIG. 9A, in the clamping mechanism, the state where the power transmission portion 52b of the roller member 52 arranged at the engagement position is clamped by the wedge surface 61g and the transmission surface 56f is the rotation axis. 20 and the worm shaft 32 are connected. In this connected state, the first drive plate 61 is rotated relative to the second drive plate 62 while contracting the connection spring 63 against the urging force of the connection spring 63. Then, the clamping mechanism in the connected state is returned to the initial state by the urging force of the connecting spring 63. More specifically, the first drive plate rotates relative to the second drive plate 62 by the biasing force of the connecting spring 63 that biases the return convex portion 61h (in FIG. 9A or counterclockwise in FIG. 10A). The first drive plate 61 and the second drive plate 62 are returned to the neutral position. Then, the wedge surface 61g is separated from the transmission surface 56f, and the holding of the power transmission unit 52b by the wedge surface 61g and the transmission surface 56f is released. That is, the clamping mechanism is returned to the initial state.

Next, the operation of the motor 11 of this embodiment will be described focusing on the operation of the clutch 50.
When the rotary shaft 20 is not rotationally driven as when the motor body 12 is stopped, as shown in FIGS. 6 and 7, the relative rotational positions of the first drive plate 61 and the second drive plate 62 are as follows. By the urging force of the connecting spring 63 that urges the return convex portion 61h, the circumferential position of the two control grooves 61d and the circumferential position of the two guide concave portions 62g are maintained at a neutral position. Each guide member 55 is disposed at the initial position by the urging force of the return spring 53 transmitted through the cam engaging portion 52c because no centrifugal force is applied. Further, the cam engaging portion 52c is maintained in the state of being disposed in the first guide portion P1 by the urging force of the return spring 53, and the power transmission portion 52b is disengaged by the urging force of the return spring 53. It is maintained in a state of being placed inside. Therefore, the roller member 52 is located at the innermost radial position within the radial movement range, and is disposed at a non-engagement position where the roller member 52 does not engage with the driven side rotating body 56 in the rotational direction. Therefore, the cam mechanism, the holding mechanism, and the clamping mechanism are in an initial state, and the clutch 50 disconnects the rotating shaft 20 and the worm shaft 32.

  In this state, as shown in FIGS. 1 and 2, when the output shaft 35 is rotated from the slide door 3 side so as to manually open or close the slide door 3, the output shaft 35 is rotated. Thus, the worm shaft 32 is rotated. As shown in FIG. 6, when the rotary shaft 20 is not rotationally driven, the roller member 52 is disposed at the non-engagement position, so the driven-side rotator 56 does not engage with the roller member 52 in the rotation direction. The rotating shaft 20 and the worm shaft 32 are in a disconnected state. Therefore, the driven-side rotator 56 idles with respect to the drive-side rotator 51 as the worm shaft 32 rotates. Therefore, rotation from the output shaft 35 side becomes easy. Therefore, it is possible to easily open and close the slide door 3 manually without requiring a large operating force.

  Then, as shown in FIGS. 1 to 3, when a command to automatically open or close the slide door 3 is generated, the motor body 12 is driven by the controller 25 and the rotary shaft 20 is driven to rotate. The drive side rotating body 51 connected to the rotating shaft 20 starts to rotate. As shown in FIG. 6, at the start of the rotational drive of the drive-side rotator 51, the first drive plate 61 and the second drive plate 62 rotate almost integrally (with almost no relative rotation). Since the rotational driving force of the second drive plate 62 is transmitted from the inner peripheral surface of the insertion engaging portion 62h to the cam engaging portion 52c, the roller member 52 also has the center axis of the driving side rotating body 51 as the center of rotation. It rotates integrally with the drive side rotator 51. On the other hand, the rotation position of the guide member 55 and the holding case 54 that holds the guide member 55 is maintained by the inertial force that acts on the guide member 55 when the drive-side rotating body 51 starts to rotate. As a result, as shown in FIGS. 8A and 8B, the drive side rotating body 51 rotates relative to the guide member 55 and the holding case 54 at the start of the rotation drive. Then, a difference in rotation angle is generated between the guide member 55 held by the holding case 54 and the driving side rotating body 51. Then, since the cam engaging portion 52c is rotated in the circumferential direction of the holding case 54 with respect to the cam groove 55d, the cam mechanism is operated and the cam engaging portion 52c is guided to the cam surface S of the cam groove 55d. However, the first guide portion P1 is moved toward the second guide portion P2 on the front side in the rotation direction of the drive side rotating body 51. At this time, the cam engaging portion 52c is moved from the first guide portion P1 to the second guide portion P2 while contracting the return spring 53 in the radial direction against the urging force of the return spring 53. Then, the roller member 52 is moved from the radially inner non-engagement position to the radially outer engagement position by the action of the cam groove 55d. In addition, since the rotation position of the guide member 55 held by the holding case 54 is maintained by the inertial force when the drive side rotating body 51 starts to rotate, centrifugal force acts on the guide member 55. Not done. Therefore, when the cam engagement portion 52c moves relatively from the first guide portion P1 to the second guide portion P2 at the start of the rotational drive of the drive side rotator 51, the guide member 55 is disposed at the initial position. ing.

  Then, as shown in FIGS. 9A and 9B, the power transmission portion 52b of the roller member 52 disposed at the engagement position is moved into the control recess 56e as the drive side rotating body 51 rotates. Thus, it contacts the transmission surface 56f on the front side in the rotational direction of the drive-side rotator 51. Thereby, the rotational driving force of the rotating shaft 20 is transmitted in the order of the first driving plate 61, the connecting spring 63, the second driving plate 62, and the roller member 52, and further, the driven side rotation from the power transmission portion 52b of the roller member 52. It can be transmitted to the body 56.

  Further, at the start of the rotational drive of the drive side rotator 51, the slide door 3 connected to the driven side rotator 56 is stopped, so that a large load acts on the driven side rotator 56. Therefore, when the power transmission portion 52b of the roller member 52 disposed at the engagement position contacts the front transmission surface 56f in the rotation direction of the driving side rotating body 51, the roller member is caused by the reaction force received from the driven side rotating body 56. 52 is decelerated. And the 2nd drive plate 62 engaged with the roller member 52 in the cam engaging part 52c is also decelerated. On the other hand, as shown in FIG. 10A, the first drive plate 61 rotates in advance with respect to the second drive plate 62 while contracting the connection spring 63 against the urging force of the connection spring 63. That is, the first drive plate 61 rotates relative to the second drive plate 62. Accordingly, the first drive plate 61 rotates relative to the power transmission portion 52b of the roller member 52 that rotates integrally with the second drive plate 62, and the first drive plate 61 out of the pair of engaging recesses 61f of each control groove 61d. The power transmission portion 52b is disposed in the engagement concave portion 61f on the rear side in the rotational direction of the rotation, and the wedge surface 61g of the engagement concave portion 61f contacts the power transmission portion 52b from the rotational direction. And the power transmission part 52b is clamped by the wedge surface 61g and the transmission surface 56f. As a result, the rotational driving force of the rotary shaft 20 is transmitted from the first drive plate 61 to the driven-side rotator 56 via the power transmission portion 52b of the roller member 52 without passing through the connection spring 63 and the second drive plate 62. Then, the driven side rotator 56 starts to rotate.

  Further, as shown in FIGS. 9B and 10B, after the cam engaging portion 52c is arranged in the second guide portion P2, the roller that rotates together with the drive-side rotator 51 that has started to rotate. The guide member 55 to which the urging force of the return spring 53 is transmitted from the member 52 also starts to rotate with the drive side rotating body 51. When the rotation speed of the guide member 55 is increased during the rotation of the drive-side rotator 51, the inertial force acting on the guide member 55 is reduced as the rotation speed is increased. As the inertial force acting on the guide member 55 becomes smaller, the guide member 55 rotates together with the holding case 54 on the driving side by the action of the urging force of the return spring 53 transmitted through the cam engagement portion 52c. It rotates relative to the body 51 in the same direction as the driving side rotating body 51. Along with the relative rotation of the guide member 55 with respect to the drive-side rotator 51, the cam groove 55d of the guide member 55 held by the holding case 54 rotates in the circumferential direction of the holding case 54 with respect to the cam engaging portion 52c. Therefore, the cam engagement portion 52c is relatively moved from the second guide portion P2 to the first guide portion P1. At the same time, as the rotational speed of the guide member 55 increases, the centrifugal force acting on the guide member 55 gradually increases. Therefore, the guide member 55 is moved radially outward while being guided by the guide surface 54h. The Accordingly, since the radial position of the cam engagement portion 52c is maintained without changing in the radial direction, the roller member 52 is held at the engagement position by the guide member 55 (that is, the holding mechanism is in a connected state). .

  Then, after the driven-side rotator 56 starts to rotate, as shown in FIG. 10A, when the load acting on the driven-side rotator 56 is larger than the urging force of the coupling spring 63, the first drive is performed. The plate 61 is rotated in the rotation direction of the first drive plate 61 with respect to the second drive plate 62 while contracting the connection spring 63 against the urging force of the connection spring 63. As a result, of the pair of wedge surfaces 61g of each control groove 61d, the wedge surface 61g on the rear side in the rotational direction of the first drive plate 61 comes into contact with the outer peripheral surface of the power transmission portion 52b from the rotational direction, and the wedge surface 61g. And the transmission surface 56f sandwich the power transmission unit 52b (that is, the clamping mechanism is in a connected state). Then, the rotational driving force of the rotary shaft 20 is transmitted from the first drive plate 61 to the driven side rotating body 56 via the roller member 52. As a result, since the driven-side rotator 56 is rotated, the worm shaft 32 connected to the driven-side rotator 56 is rotated. And the rotational force decelerated by the worm part 32a and the worm wheel 33 is output from the output shaft 35, and the sliding door 3 is automatically opened or closed.

  On the other hand, as shown in FIGS. 11A and 11B, when the load acting on the driven-side rotator 56 is equal to or less than the biasing force of the coupling spring 63, the first drive plate 61 and the second drive The plate 62 rotates integrally with the plate 62 while being held at the neutral position by the urging force of the coupling spring 63. Accordingly, the rotational driving force of the rotating shaft 20 is transmitted in the order of the first driving plate 61, the coupling spring 63, the second driving plate 62, the roller member 52, and the driven side rotating body 56. As a result, since the driven-side rotator 56 is rotated, the worm shaft 32 connected to the driven-side rotator 56 is rotated. And the rotational force decelerated by the worm part 32a and the worm wheel 33 is output from the output shaft 35, and the sliding door 3 is automatically opened or closed.

  When the motor main body 12 is stopped, the rotation speed of the rotating shaft 20 decreases. As shown in FIG. 10A, when the motor main body 12 is stopped when the load acting on the driven side rotating body 56 is larger than the urging force of the connection spring 63, The connecting spring 63 that urges the return convex portion 61h rotates the first drive plate 61 in the direction opposite to the previous rotation direction. As a result, since the first drive plate 61 is rotated relative to the second drive plate 62, the holding of the power transmission portion 52b by the transmission surface 56f and the wedge surface 61g is released (that is, the holding mechanism is in the initial state). To return). Further, due to the urging force of the connecting spring 63, the relative rotational position of the first drive plate 61 and the second drive plate 62 matches the circumferential position of the two control grooves 61d and the circumferential position of the two guide recesses 62g. Return to the neutral position.

  Further, when the rotational speed of the drive-side rotator 51 decreases, the rotational speed of the guide member 55 and the driven-side rotator 56 that have been rotated by the rotational drive force transmitted from the drive-side rotator 51 via the roller member 52 is also increased. descend. Then, since the centrifugal force acting on the guide member 55 is reduced, the guide member 55 is moved radially inward by the urging force of the return spring 53 (that is, the holding mechanism returns to the initial state). As shown in FIGS. 6 and 7, the roller member 52 in which the cam engagement portion 52 c is inserted into the cam groove 55 d of the guide member 55 is moved radially inward together with the guide member 55. At this time, the cam engaging portion 52c is positioned in the first guide portion P1 in the cam groove 55d. Accordingly, the roller member 52 is moved from the engagement position to the non-engagement position. As a result, the rotation direction engagement between the driving side rotating body 51 and the driven side rotating body 56 is released, and the rotating shaft 20 and the worm shaft 32 are disconnected.

  11A and 11B, when the motor main body 12 is stopped, the load acting on the driven-side rotator 56 is smaller than the urging force of the coupling spring 63. In such a case, when the centrifugal force acting on the guide member 55 decreases as the rotational speed of the drive-side rotator 51 decreases, the guide member 55 is moved radially inward by the urging force of the return spring 53 ( That is, the holding mechanism is returned to the initial state). As shown in FIGS. 6 and 7, the roller member 52 is moved radially inward together with the guide member 55. At this time, since the cam engagement portion 52c is located at the first guide portion P1 in the cam groove 55d, the roller member 52 is moved from the engagement position to the non-engagement position. As a result, the rotation direction engagement between the driving side rotating body 51 and the driven side rotating body 56 is released, and the rotating shaft 20 and the worm shaft 32 are disconnected.

  8A to 11A show the clutch 50 when the drive side rotating body 51 (rotating shaft 20) is rotated clockwise in the figure. However, the clutch 50 connects the rotary shaft 20 and the worm shaft 32 in the same manner when the rotary shaft 20 is rotated counterclockwise in FIGS. 8A to 11A.

Next, the assembling device 81 used when assembling the clutch 50 of the present embodiment will be described.
As shown in FIGS. 12 and 13, the assembling apparatus 81 includes a disk-shaped base 82. The diameter of the base 82 is larger than the diameter of the holding case 54 (that is, the diameter of the cover portion 54a). Further, the upper surface (one axial end surface) of the base 82 is a flat mounting surface 82a. A columnar assembly shaft 83 protrudes from the center portion of the mounting surface 82a in the radial direction. The assembly shaft 83 is formed coaxially with the base 82. The diameter of the assembly shaft 83 is formed to be substantially equal to the inner diameter of the insertion hole 54 d of the holding case 54, and the axial length of the assembly shaft 83 is greater than the axial length of the insertion portion 54 b of the holding case 54. Is also formed long. Further, as shown in FIG. 15, in the state where the insertion portion 54b is extrapolated to the assembly shaft 83 so that the cover portion 54a abuts on the mounting surface 82a, the assembly shaft 83 of the insertion portion 54b from the front end surface of the insertion portion 54b. The protruding amount is substantially equal to the axial length of the portion (including the partition convex portion 62d) on the guide portion 62a side from the partition convex portion 62d in the insertion hole 62c.

  As shown in FIGS. 12 and 13, device-side engaging portions 84 are formed on the mounting surface 82 a at two locations on both sides in the diameter direction of the assembly shaft 83. The two device-side engaging portions 84 have a cylindrical shape protruding (convex) from the placement surface 82a. The two device-side engaging portions 84 are formed at positions corresponding to the two clutch-side engaging portions 54k formed on the holding case 54 disposed on the placement surface 82a. The two device-side engaging portions 84 are held by the holding case 54 disposed on the mounting surface 82a while inserting the assembly shaft 83 into the insertion hole 54d, and are disposed at the initial position by the two guide members 55. Is formed at a position aligned with the cam groove 55d in the axial direction. Furthermore, as shown in FIG. 14, the two device-side engaging portions 84 are formed at positions aligned in the axial direction with the first guide portion P <b> 1 in the cam grooves 55 d of the two guide members 55. As shown in FIG. 13, the diameter of each device-side engaging portion 84 is slightly smaller than the diameter of the clutch-side engaging portion 54k, and is substantially equal to the width of the cam groove 55d. Furthermore, the axial length of each device-side engaging portion 84 is formed longer than the axial thickness of the cover portion 54a. When the holding case 54 is disposed on the mounting surface 82a while the assembly shaft 83 is inserted into the insertion hole 54d, the two device side engaging portions 84 are connected to the clutch side engaging portion 54k from the outside of the holding case 54. Can be inserted in the axial direction. Further, the distal end portions of the two device-side engaging portions 84 respectively penetrate the two clutch-side engaging portions 54k and axially extend to the first guide portion P1 of the cam groove 55d of the guide member 55 disposed at the initial position. Can be inserted. Each device-side engaging portion 84 is inserted into the clutch-side engaging portion 54k, thereby engaging with the clutch-side engaging portion 54k so as to be immovable in the plane direction of the placement surface 82a.

Next, a method for assembling the clutch 50 using the assembling device 81 will be described together with its action.
First, as shown in FIGS. 13 and 14, a component located at one end portion in the axial direction of the clutch 50, that is, the holding case 54 is placed on the placement surface 82 a of the assembling apparatus 81. Specifically, the cover portion 54a is disposed on the mounting surface 82a while the assembly shaft 83 is inserted into the insertion hole 54d from the proximal end side of the insertion portion 54b. At this time, the two device side engaging portions 84 are inserted into the two clutch side engaging portions 54k from the axial direction. Each device-side engagement portion 84 penetrates the clutch-side engagement portion 54k in the axial direction and engages with the clutch-side engagement portion 54k so that the holding case 54 is placed on the mounting surface 82a. It becomes immovable in the circumferential direction with respect to the assembling apparatus 81 and immovable in the radial direction.

  Next, the guide members 55 are respectively accommodated in the two holding recesses 54e of the holding case 54 disposed on the placement surface 82a from the axial direction. At this time, the guide member 55 is inserted into the holding recess 54e from the axial direction while the distal end portion of the device side engaging portion 84 is inserted into the first guide portion P1 of the cam groove 55d from the axial direction. Then, the guide member 55 is automatically disposed at the initial position when the device side engaging portion 84 is engaged with the first guide portion P1.

  Next, as shown in FIGS. 14 and 15, the second drive plate 62 is disposed in the axial direction on the holding case 54 holding the guide member 55. The second drive plate 62 is overlapped with the guide member 55 in the axial direction so that the guide portion 62a faces the guide member 55 side (the guide portion 62a is on the lower side). At this time, the distal end portion of the insertion portion 54b is inserted into a portion closer to the guide portion 62a than the partition convex portion 62d in the insertion hole 62c, and the distal end portion of the assembly shaft 83 is inserted inside the partition convex portion 62d. The Therefore, the second drive plate 62 cannot move in the radial direction with respect to the assembling device 81 and the holding case 54.

  Next, the two return springs 53 are accommodated in the two insertion engaging portions 62h from the axial direction. Each return spring 53 is inserted into the insertion engaging portion 62h from the opening on the accommodating portion 62b side of the insertion engaging portion 62h.

  Next, the two roller members 52 are assembled to the second drive plate 62 and the guide member 55 from the axial direction. The cam engaging portion 52c of each roller member 52 is inserted into the guide recessed portion 62g from the distal end portion of the cam engaging portion 52c, and the guide recessed portion 62g and the insertion engaging portion 62h are penetrated in the axial direction so that the cam groove 55d It inserts into the 1st guide part P1 from an axial direction, respectively. At this time, the power transmission portion 52b is located on the radially inner side with respect to the cam engaging portion 52c, and the urging surface 52d faces the radially outer side. At this time, the cam engagement portion 52c is inserted into the cam groove 55d while the return spring 53 is compressed between the urging surface 52d and the inner peripheral surface of the insertion engagement portion 62h. Further, simultaneously with the insertion of the cam engagement portion 52c into the first guide portion P1 of the cam groove 55d, the power transmission portion 52b is inserted into the guide recess 62g from the axial direction. Since the guide member 55 is disposed at the initial position by the device side engaging portion 84, the roller member 52 in which the cam engaging portion 52c is inserted into the first guide portion P1 of the cam groove 55d is in the non-engaging position. Be placed. Further, since the roller member 52 is urged radially inward by the urging force of the return spring 53, the roller member 52 is stably disposed at the non-engagement position after being assembled to the second drive plate 62 and the guide member 55. Is done. Further, since the roller member 52 is disposed in the non-engagement position, the second drive plate 62 in which the cam engagement portion 52c is engaged with the insertion engagement portion 62h has a rotation position with respect to the guide member 55. It is stably arranged at the position where it is arranged at the non-engagement position.

  Next, the two connecting springs 63 are accommodated in the two spring accommodating portions 62e, respectively. Each connection spring 63 is inserted into the spring accommodating portion 62e from the axial opening of the spring accommodating portion 62e.

  Next, the first drive plate 61 is disposed on the second drive plate 62 from the axial direction. The first drive plate 61 is configured to insert the drive-side shaft connecting portion 61a into the insertion hole 62c from the axial direction, and insert the two pairs of return convex portions 61h into the two pairs of return accommodating portions 62f from the axial direction. Overlaid on the drive plate 62. At this time, the first drive plate 61 is inserted into the cam groove 55d of the guide member 55 disposed at the initial position by the engagement of the device side engaging portion 84 with the first guide portion P1 of the cam groove 55d. The roller member 52 disposed at the non-engagement position by being biased radially inward by the return spring 53 causes the rotation position (the position in the circumferential direction) relative to the guide member 55 to be disposed at the non-engagement position. It is a position to do. When the roller member 52 is disposed at the non-engagement position, that is, when the rotary shaft 20 is not driven and when the first drive plate 61 is stopped, in the normal operation of the clutch 50, the connection spring 63 is the first. There is no contraction in the circumferential direction between the drive plate 61 and the second drive plate 62 (the clamping mechanism will not be connected). Accordingly, when the first drive plate 61 is disposed on the second drive plate 62 from the axial direction, the connection spring 63 does not have to be contracted between the return convex portion 61h and the inner peripheral surface of the return accommodating portion 62f. Then, when the two pairs of return convex portions 61h are inserted into the two pairs of return accommodating portions 62f from the axial direction, the first drive plate 61 has a rotational position with respect to the second drive plate, and the control groove 61d (non-engagement recess 61e). This is a neutral position where the circumferential position of the insertion engagement portion 62h coincides with the circumferential position. Accordingly, the two pairs of return convex portions 61h are inserted into the two pairs of return accommodating portions 62f from the axial direction, and at the same time, the power transmission portion 52b can be easily inserted from the axial direction into the non-engaging recess 61e of the control groove 61d. .

  Next, the driven-side rotator 56 is disposed on the first drive plate 61 from the axial direction. The driven-side rotator 56 is disposed on the first drive plate 61 so as to accommodate the first drive plate 61 in the driven cylindrical portion 56a from the axial direction. At this time, since the roller member 52 is disposed at the non-engagement position, the driven-side rotator 56 does not have to be positioned in the circumferential direction with respect to the first drive plate 61 and the roller member 52. Thus, the assembly of the clutch 50 is completed. The clutch 50 that has been assembled is removed from the assembly device 81.

As described above, the present embodiment has the following effects.
(1) The device side engaging portion 84 is engaged with the clutch side engaging portion 54k formed on the holding case 54 located at one end portion in the axial direction of the clutch 50 so that the holding case 54 is placed on the mounting surface 82a. If it arrange | positions to this, this holding | maintenance case 54 will become immovable in the plane direction of the mounting surface 82a on the mounting surface 82a. Therefore, after the holding case 54 positioned at one end of the clutch 50 in the axial direction is disposed on the mounting surface 82a, the other components of the clutch 50 (that is, components other than the holding case 54) are assembled in order. Since other parts are assembled to the holding case 54 whose movement is restricted on 82a, the other parts can be easily assembled. Therefore, the assembling property of the clutch 50 can be improved.

  (2) Since the cam groove 55d penetrates the guide member 55 in the axial direction, when the guide member 55 is disposed on the holding case 54 disposed on the placement surface 82a, the apparatus-side engagement portion 84 is disposed. Can be easily inserted into the first guide portion P1 of the cam groove 55d from the axial direction. Further, the device-side engaging portion 84 is formed at a position that passes through the clutch-side engaging portion 54k and is inserted into the first guide portion P1 of the cam groove 55d of the guide member 55 disposed at the initial position. . Therefore, by placing the guide member 55 on the holding case 54 while inserting the device side engaging portion 84 into the first guide portion P1 of the cam groove 55d, the guide member 55 is automatically set to the initial position. Can be arranged. As a result, the assembling property of the clutch 50 can be further improved.

  (3) When the first drive plate 61 is disposed on the second drive plate 62 from the axial direction, the device-side engaging portion 84 of the first drive plate 61 is engaged with the first guide portion P1 of the cam groove 55d. Thus, the guide member 55 is inserted into the cam groove 55d of the guide member 55 disposed at the initial position and is urged radially inward by the return spring 53 to be disposed at the non-engagement position. The rotation position (the position in the circumferential direction) with respect to is a position where the roller member 52 is disposed at the non-engagement position. When the roller member 52 is disposed at the non-engagement position, that is, when the rotary shaft 20 is not driven and when the first drive plate 61 is stopped, the connecting spring 63 is connected to the return convex portion 61h and the return accommodating portion 62f. It cannot be shrunk with the inner peripheral surface. Therefore, when the first drive plate 61 is disposed on the second drive plate 62 from the axial direction, the connecting spring 63 does not have to be contracted, so the two pairs of return convex portions 61h are replaced with the two pairs of return accommodating portions 62f. It can be easily inserted from the axial direction. When the two pairs of return convex portions 61h are inserted into the two pairs of return accommodating portions 62f from the axial direction, the rotational position of the first drive plate 61 relative to the second drive plate is the same as the circumferential position of the non-engagement concave portion 61e. It becomes a neutral position where the circumferential position of the insertion engaging portion 62h coincides. Accordingly, the two pairs of return convex portions 61h are inserted into the two pairs of return accommodating portions 62f from the axial direction, and at the same time, the power transmission portion 52b can be easily inserted from the axial direction into the non-engaging recess 61e of the control groove 61d. . Therefore, the assembling property of the clutch 50 can be further improved.

  (4) After the holding case 54 positioned at one end in the axial direction of the clutch 50 is arranged on the mounting surface 82a, the components of the clutch 50 other than the holding case 54 are arranged on the holding case 54 in order. This completes the assembly of the clutch 50. Therefore, for example, the first drive plate 61, the second drive plate 62, the coupling spring 63, the roller member 52, and the return spring 53 are assembled in advance compared to the case where the guide member 55 is assembled to the holding case 54. The parts can be easily handled when the clutch 50 is assembled.

In addition, you may change embodiment of this invention as follows.
In the above embodiment, the clutch 50 is provided in the motor 11. However, the clutch 50 may be used in addition to the motor 11 to operate so as to connect / disconnect the drive shaft and the driven shaft arranged on the same axis.

  In the above embodiment, when the clutch 50 is assembled, the connecting spring 63 is inserted into the spring accommodating portion 62e from the axial direction. However, the connecting spring 63 may be inserted into the spring accommodating portion 62e from the radial direction using the insertion path 62k. In this case, the coupling spring 63 is assembled after the first driving plate 61 is overlaid on the second driving plate 62. When the first drive plate 61 is disposed so as to overlap the second drive plate 62 on the housing portion 62b side in the axial direction, the first drive plate 61 closes the openings of the pair of spring housing portions 62e from the axial direction. Is done. In this state, the connection spring 63 is inserted into the spring accommodating portion 62e from the outside of the first drive plate 61 and the second drive plate 62 assembled to each other through the insertion path 62k. At this time, the connection spring 63 is compressed in advance and is contracted to be shorter than the circumferential length of the insertion path 62k. The coupling spring 63 is inserted into the insertion path 62k from the radially outer side of the second drive plate 62. Then, the connecting spring 63 is pushed inward in the radial direction until it passes through the insertion path 62k along the radial direction. The connecting spring 63 that has passed through the insertion path 62k enters the spring accommodating portion 62e and extends in the circumferential direction within the spring accommodating portion 62e, and both ends in the expansion / contraction direction of the connecting spring 63 are respectively in the circumferential direction of the spring accommodating portion 62e. Abuts on the inner surface of both ends.

  In general, the connection spring 63 housed in the spring housing portion 62e in a compressed state may jump out of the spring housing portion 62e from the opening of the spring housing portion 62e due to stress (internal force) generated by compression. is there. When the connecting spring 63 is compressed in an arc shape as in the above-described embodiment, the connecting spring 63 generates different stresses in the radially inner portion and the radially outer portion. There is a possibility that it will be easier to jump out from the opening of the portion 62e to the outside of the spring accommodating portion 62e. Therefore, when the connection spring 63 can be assembled through the insertion path 62k to the spring accommodating portion 62e whose opening is closed by the first drive plate 61 in this way, the coupling assembled to the spring accommodating portion 62e. It is suppressed that the spring 63 comes out of the spring accommodating part 62e from the opening part of the spring accommodating part 62e. As a result, the assembling property of the connecting spring 63 can be improved. Further, when the other components of the clutch 50 are assembled after the coupling spring 63 is assembled to the spring accommodating portion 62e, the coupling spring 63 is prevented from coming off, so that the assembly performance of the clutch 50 can be improved.

The clutch 50 may be configured not to include the insertion path 62k for inserting the coupling spring 63 into the spring accommodating portion 62e from the radial direction.
In the above embodiment, after the return spring 53 is inserted into the insertion engagement portion 62h, the roller member 52 is assembled to the second drive plate 62 and the guide member 55, and then the connection spring 63 is accommodated in the spring accommodating portion 62e. doing. However, after the return spring 53 is inserted into the insertion engaging portion 62h, the coupling spring 63 may be accommodated in the spring accommodating portion 62e before the roller member 52 is assembled to the second drive plate 62 and the guide member 55. . Further, after the coupling spring 63 is accommodated in the spring accommodating portion 62e, the return spring 53 may be inserted into the insertion engaging portion 62h, and then the roller member 52 may be assembled to the second drive plate 62 and the guide member 55. .

  In the above embodiment, the connecting spring 63 is a compression coil spring. However, if the connection spring 63 biases the driving side rotating body 51 (first driving plate 61) so as to release the holding of the roller member 52 by the driving side rotating body 51 and the driven side rotating body 56, the connecting spring 63 is not limited. A spring (such as a torsion coil spring) other than the compression coil spring may be used.

In the above embodiment, a compression coil spring is used for the return spring 53 and the connection spring 63, but a tension coil spring may be used.
In the above embodiment, the return accommodating portion 62f has a concave shape. However, the return accommodating portion 62f may be formed in a hole shape that penetrates the second drive plate 62 in the axial direction as long as the pair of return convex portions 61h can be inserted. Moreover, in the said embodiment, the spring accommodating part 62e has comprised the concave shape. However, the spring accommodating portion 62e may be formed in a hole shape that penetrates the second drive plate 62 in the axial direction as long as the connection spring 63 can be accommodated.

  In the above embodiment, the first drive plate 61 is formed with the return convex portion 61h, while the second drive plate 62 is formed with the spring accommodating portion 62e and the return accommodating portion 62f. However, the spring accommodating portion 62e and the return accommodating portion 62f may be formed on the first drive plate, while the return convex portion 61h may be formed on the second drive plate 62.

  In the above embodiment, at the start of the rotational drive of the drive side rotator 51, the guide member 55 rotates behind the drive side rotator 51 by the inertial force acting on the guide member 55, so that the drive side rotator 51 51 and the guide member 55 are rotated together. However, in addition to using the inertial force acting on the guide member 55, the clutch 50 is provided with means for rotating the drive side rotary body 51 and the guide member 55 together when the drive side rotary body 51 starts to rotate. May be. For example, a means for generating a frictional force between the guide member 55 and the rotating shaft 20 is provided in the clutch 50 at the start of the rotational drive of the drive side rotating body 51, and the guide member 55 rotates on the drive side by the action of the frictional force. You may make it rotate later than the body 51. FIG.

  -The shape of 55 d of cam grooves is not restricted to the shape of the said embodiment. The cam groove only needs to have a shape that can guide the roller member 52 from the non-engagement position to the engagement position as the drive-side rotator 51 and the guide member 55 rotate together. For example, the cam groove may be formed such that the shape viewed from the axial direction is an arc shape protruding radially inward. The cam groove may be formed so as to extend linearly from the first guide part P1 toward the second guide part P2.

  -The part (cam part) which guides the movement of the roller member 52 between a non-engagement position and an engagement position in the guide member 55 is not restricted to the groove-shaped cam groove 55d. For example, the roller protrusion 52 between the non-engagement position and the engagement position is formed by the cam protrusion formed so as to protrude from the guide member 55 in the axial direction and engaged with the cam engagement portion 52c of the roller member 52. You may make it guide movement.

  In the above embodiment, the device-side engaging portion 84 passes through the clutch-side engaging portion 54k and is inserted into the first guide portion P1 of the cam groove 55d of the guide member 55 disposed at the initial position. Is formed. However, the device-side engagement portion 84 is formed at a position that penetrates the clutch-side engagement portion 54k and is inserted into a portion other than the first guide portion P1 in the cam groove 55d of the guide member 55 disposed at the initial position. May be. Even in this case, after the holding case 54 positioned at one end portion in the axial direction of the clutch 50 is disposed on the mounting surface 82a while the device-side engaging portion 84 is inserted into the clutch-side engaging portion 54k, By assembling the guide member 55 while engaging the device side engaging portion 84 in the axial direction with the groove 55d, the guide member can be automatically arranged at the initial position. Therefore, the assembling property of the clutch 50 can be further improved.

  In the above embodiment, the axial length of the device side engaging portion 84 (height from the placement surface 82a) is longer (higher) than the axial thickness of the cover portion 54a. However, the length in the axial direction of the device-side engagement portion 84 is not limited to this, and may be any length that can at least engage with the clutch-side engagement portion 54k.

  In the above embodiment, the device side engaging portion 84 has a cylindrical shape. However, the shape of the device side engaging portion 84 is not limited to a cylindrical shape. The device-side engagement portion 84 may have a polygonal column shape. Further, the device-side engaging portion 84 may be a convex portion having the same cross-sectional shape as the axial cross-sectional shape of the cam groove 55d. In the above embodiment, one device-side engaging portion 84 is provided for one cam groove 55d, but a plurality of device-side engaging portions 84 are formed for one cam groove 55d. Also good.

  In the above embodiment, the holding case 54 is formed with the hole-like clutch-side engagement portion 54k, and the assembly device 81 is provided with the convex device-side engagement portion 84. However, a convex clutch side engaging portion that protrudes in the axial direction is formed in the holding case 54, and a concave device side engagement that engages with the clutch side engaging portion so as not to move in the planar direction of the mounting surface 82a. A joint may be formed.

  In the above-described embodiment, the clutch-side engaging portion 54k that engages with the device-side engaging portion 84 is formed in the holding case 54 that is positioned at one end portion in the axial direction of the clutch 50. However, the clutch-side engaging portion that engages with the device side engaging portion 84 so as not to move in the planar direction of the mounting surface 82 a is not connected to the driven-side rotating body 56 positioned at one end portion in the axial direction of the clutch 50. It may be formed.

The assembling device 81 does not necessarily include the assembling shaft 83.
-The clutch 50 of the said embodiment is provided with the connection spring 63. FIG. However, the clutch 50 does not necessarily include the connection spring 63. In this case, if the clamping mechanism is configured to return to the initial state by the urging force of the return spring 53, the number of parts can be reduced.

  In the above embodiment, the return spring 53 urges the two mechanisms of the cam mechanism and the holding mechanism to return to the initial state. However, the return spring 53 may return the two mechanisms of the cam mechanism and the clamping mechanism, or the two mechanisms of the holding mechanism and the clamping mechanism to the initial state. Moreover, the clutch 50 of the said embodiment does not necessarily need to be provided with a clamping mechanism.

  The cam mechanism, the holding mechanism, and the clamping mechanism of the above embodiment disconnect the worm shaft 32 from the rotation shaft 20 when the rotation shaft 20 is not driven, while the rotation shaft 20 and the worm shaft 32 are driven from the rotation shaft 20 side. It is a mechanism for operating the clutch 50 so as to connect the two. In addition to the cam mechanism, the holding mechanism, and the clamping mechanism, the clutch 50 of the above embodiment is in an initial state in which the rotating shaft 20 and the worm shaft 32 are disconnected when the rotating shaft 20 is not driven, and is driven from the rotating shaft 20 side. A mechanism for connecting the rotary shaft 20 and the worm shaft 32 may sometimes be provided.

  -In the clutch 50 of the said embodiment, you may change suitably the number of the guide members 55 which have the roller member 52, the control groove 61d, the guide recessed part 62g, the insertion engaging part 62h, the connection spring 63, and the cam groove 55d. It is sufficient that at least one of these parts is provided in the clutch 50.

  In the above embodiment, the first drive plate 61 is formed separately from the rotary shaft 20, but may be formed integrally. Moreover, in the said embodiment, although the driven side rotary body 56 is formed separately from the worm shaft 32, you may form integrally.

  DESCRIPTION OF SYMBOLS 20 ... Rotating shaft as a drive shaft, 32 ... Worm shaft as a driven shaft, 50 ... Clutch, 51 ... Driving side rotating body, 52 ... Roller member as a power transmission member, 53 ... Return spring, 54 ... Axial direction of clutch A holding case as a part located at one end of the head, 54e... Holding recess, 54k... Clutch-side engaging portion, 55... Guide member, 55d ... cam groove as a cam portion, 56. Drive plate, 61d ... control groove, 61e ... non-engagement recess, 61g ... wedge surface, 61h ... return projection, 62 ... second drive plate, 62e ... spring housing, 62f ... return housing, 62h ... insertion engagement Reference numeral 63: Connection spring 81: Assembly device 82: Base 82a: Placement surface 84: Device side engagement portion P1: First guide portion P2: Second guide portion

Claims (8)

A mechanism that is in an initial state in which the drive shaft and the driven shaft are disconnected when the drive shaft is not driven, and that is connected to connect the drive shaft and the driven shaft when driven from the drive shaft side; A clutch for assembling a mechanical clutch that disconnects the driven shaft from the drive shaft when the drive shaft is not driven, and operates to connect the drive shaft and the driven shaft when driven from the drive shaft side. Assembling apparatus of
A base having a mounting surface on the upper surface;
Device-side engagement that is formed on the mounting surface and engages with the clutch side engaging portion formed on a part located at one end of the clutch in the axial direction so as not to move relatively in the plane direction of the mounting surface. And a clutch assembling device. The clutch assembly device according to claim 1,
The clutch is
A drive-side rotator provided so as to be integrally rotatable with the drive shaft;
A driven-side rotator provided to be rotatable integrally with the driven shaft;
It is arranged between the driving side rotating body and the driven side rotating body in the radial direction and is provided so as to be able to rotate integrally with the driving side rotating body. The driving side rotating body and the driven side rotating body are rotated in the rotation direction. Is moved between a non-engagement position that does not engage with and an engagement position that engages the drive-side rotator and the driven-side rotator in the rotational direction on the radially outer side of the non-engagement position. A power transmission member;
The power transmission member is engaged and has a cam portion that guides the movement of the power transmission member between the engagement position and the non-engagement position, and the power transmission member is It is arranged at an initial position where it can be arranged at the non-engagement position, and at the start of rotational drive of the drive side rotator, it rotates relative to the drive side rotator and the power transmission member is disengaged by the cam portion. It is guided from the position to the engagement position, and when the drive side rotator is rotated, the power transmission member is moved to the outside in the radial direction by the centrifugal force generated by the rotation with the drive side rotator. A guide member held in position;
It is equipped with
The device side engaging portion has a convex shape protruding from the mounting surface, passes through the hole-like clutch side engaging portion, and is pivoted to the cam portion of the guide member disposed at the initial position. A clutch assembling apparatus, wherein the clutch assembling apparatus is formed at a position engaged from a direction. In the clutch assembly apparatus according to claim 2,
The cam portion is located at a position displaced in the circumferential direction with respect to the first guide portion from a first guide portion at which the power transmission member can be disposed at the non-engagement position, and radially outward from the first guide portion. A cam groove having a groove shape extending to a second guide portion disposed in the engagement position and extending through the guide member in the axial direction.
The device-side engaging portion is formed at a position that penetrates the clutch-side engaging portion and is inserted into the first guide portion of the cam groove of the guide member that is disposed at the initial position. A clutch assembly device characterized by the above. A mechanism that is in an initial state in which the drive shaft and the driven shaft are disconnected when the drive shaft is not driven, and that is connected to connect the drive shaft and the driven shaft when driven from the drive shaft side; An assembly method of a mechanical clutch that operates to disconnect the driven shaft from the drive shaft when the drive shaft is not driven, and to connect the drive shaft and the driven shaft when driven from the drive shaft side. There,
A base having a mounting surface on the upper surface, and a clutch side engaging portion formed on a part positioned at one end portion in the axial direction of the clutch relative to the plane direction of the mounting surface. Using an assembly device having a device side engaging portion that engages unevenly so that it cannot move,
The component located at one end in the axial direction of the clutch is placed on the placement surface while engaging the device side engagement portion with the clutch side engagement portion, and the clutch is placed on the component. A method of assembling a clutch, comprising assembling other parts constituting the clutch. The method of assembling the clutch according to claim 4,
The clutch is
A drive-side rotator provided so as to be integrally rotatable with the drive shaft;
A driven-side rotator provided to be rotatable integrally with the driven shaft;
It is arranged between the driving side rotating body and the driven side rotating body in the radial direction and is provided so as to be able to rotate integrally with the driving side rotating body. The driving side rotating body and the driven side rotating body are rotated in the rotation direction. Is moved between a non-engagement position that does not engage with and an engagement position that engages the drive-side rotator and the driven-side rotator in the rotational direction on the radially outer side of the non-engagement position. A power transmission member;
The power transmission member is engaged and has a cam portion that guides the movement of the power transmission member between the engagement position and the non-engagement position, and the power transmission member is It is arranged at an initial position where it can be arranged at the non-engagement position, and at the start of rotational drive of the drive side rotator, it rotates relative to the drive side rotator and the power transmission member is disengaged by the cam portion. It is guided from the position to the engagement position, and when the drive side rotator is rotated, the power transmission member is moved to the outside in the radial direction by the centrifugal force generated by the rotation with the drive side rotator. A guide member held in position;
It is equipped with
The device side engaging portion has a convex shape protruding from the mounting surface, penetrates the clutch side engaging portion, and engages with the cam portion of the guide member disposed at the initial position from the axial direction. Formed at the position where
After the component located at one end in the axial direction of the clutch is placed on the placement surface while the device-side engagement portion is inserted through the clutch-side engagement portion, the device-side engagement is placed on the cam portion. A method for assembling a clutch, wherein the guide member is assembled onto the component located at one end of the clutch in the axial direction while engaging a joint portion from the axial direction. The method of assembling the clutch according to claim 5,
The cam portion is located at a position displaced in the circumferential direction with respect to the first guide portion from a first guide portion at which the power transmission member can be disposed at the non-engagement position, and radially outward from the first guide portion. A cam groove having a groove shape extending to a second guide portion disposed in the engagement position and extending through the guide member in the axial direction.
The device side engaging portion is formed at a position that penetrates the clutch side engaging portion and is inserted into the first guide portion of the cam groove of the guide member disposed at the initial position,
The first guide of the cam groove after the component located at one end in the axial direction of the clutch is placed on the placement surface while the device side engagement portion is inserted into the clutch side engagement portion. A clutch assembling method, wherein the guide member is assembled onto the part located at one end of the clutch in the axial direction while the device side engaging portion is inserted into the portion from the axial direction. The method of assembling the clutch according to claim 6,
The guide includes a holding recess that is positioned at one end of the clutch in the axial direction and opens in the axial direction, and the clutch-side engaging portion that is formed at the bottom of the holding recess. The guide is accommodated in the holding recess. A holding case for guiding the radial movement of the member is provided,
The drive-side rotator is
A non-engagement recess into which the power transmission member arranged at the non-engagement position is inserted and a rotation direction of the power transmission member formed at both sides in the circumferential direction of the non-engagement depression and arranged at the engagement position A drive groove having a control groove having a wedge surface that is in contact with the driven-side rotating body and sandwiching the power transmission member together with the driven-side rotator and opening in the axial direction, and at least a pair of return convex portions protruding in the axial direction; A first drive plate that rotates integrally;
A connecting spring disposed between at least one pair of return accommodating portions into which the pair of return convex portions are inserted in the axial direction and the pair of return accommodating portions and the pair of return convex portions. A spring accommodating portion opened in the axial direction for accommodating the power transmission member, the power transmission member penetrates in the axial direction and guides the radial movement of the power transmission member, while restricting the circumferential movement of the power transmission member and An insertion engaging portion for accommodating a return spring that urges the power transmission member radially inward, and is axially superimposed on the first drive plate and connected to the first drive plate via the connection spring. A second drive plate,
In the clutch, when the drive shaft is not driven, the first drive plate and the second drive plate are urged by the urging force of the connection spring that urges the inner peripheral surface of the return convex portion and the return accommodating portion. The power transmission member biased radially inward by the return spring is maintained in the rotational position where the circumferential positions of the non-engaging concave portion and the insertion engaging portion coincide with each other. When the drive shaft is driven, the first drive plate rotates relative to the second drive plate while compressing the connection spring against the urging force of the connection spring. The wedge surface abuts on a member, and the power transmission member is sandwiched between the wedge surface and the driven side rotating body,
After the holding case is placed on the mounting surface while the device side engaging portion is inserted through the clutch side engaging portion, the device side engaging portion is pivoted on the first guide portion of the cam groove. The guide member is inserted into the holding recess from the axial direction while being inserted from the direction, the first drive plate is overlapped with the guide member from the axial direction, and the power transmission member is moved by the return spring in the insertion engagement portion. The power transmission member and the return spring are inserted into the insertion engagement portion so as to be urged radially inward, and the power transmission member is inserted into the cam groove from the axial direction, and the return spring is housed in the spring. The first drive is performed while the return convex portion paired with the return accommodating portion paired after being accommodated in the portion is inserted from the axial direction and simultaneously the power transmission member is inserted into the non-engaging concave portion from the axial direction. Assembling method of a clutch, characterized in that to superimpose the rate from the axial direction of the second drive plate. A mechanism that is in an initial state in which the drive shaft and the driven shaft are disconnected when the drive shaft is not driven, and that is connected to connect the drive shaft and the driven shaft when driven from the drive shaft side; A mechanical clutch that disconnects the driven shaft from the drive shaft when the drive shaft is not driven, and operates to connect the drive shaft and the driven shaft when driven from the drive shaft side;
The part located at one end of the clutch in the axial direction includes a clutch side engagement that engages with a device side engaging portion formed on a mounting surface provided on an upper surface of a base provided in the clutch assembly device. A clutch characterized in that a joint is formed.