JP2007298163A - Clutch, motor, and door opening and closing device for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a clutch contributing to a miniaturization of motor. <P>SOLUTION: A clutch 24 is constituted by comprising: an input side rotation body 31 integrally rotated with a rotary shaft 10 of motor body 2; an output side rotation body 32 integrally rotated with an input worm shaft 22 of reduction mechanism; and a contact member 33 which is provided movably along radial direction to be arranged in either location lockable, or location not lockable in rotating direction with the output side rotation body 32, while keeping a lockable condition in the rotating direction with the input side rotation body 31, and moved against an energising force of coil spring 35 to location side lockable in the rotating direction with the output side rotation body 32, by receiving torque from the rotation body 31 with a rotation of the input side rotation body 31. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a motor with a clutch used as a drive source for a vehicle door opening and closing device such as a vehicle sliding door opening and closing device and a vehicle back door opening and closing device, and the vehicle door opening and closing device.

  2. Description of the Related Art In recent years, some automobiles equipped with a slide door that opens and closes an entrance / exit provided on the side of a vehicle body are equipped with a slide door opening / closing device that automatically opens and closes the slide door by a motor drive. A motor used as a drive source of a sliding door opening and closing device is configured by integrally assembling a motor body that is rotationally driven and a speed reduction unit that decelerates and outputs rotation generated in the motor body. The sliding door is opened and closed.

  In such a sliding door opening and closing device, it is also required that the sliding door can be manually opened and closed. For this reason, a door opening / closing device disclosed in Patent Document 1 has been proposed in which an output shaft of a speed reduction unit is equipped with an electromagnetic clutch.

  When the sliding door is opened and closed by a motor drive, the electromagnetic clutch is turned on, the worm wheel that is the output gear and the rotary shaft that is the output shaft are connected (coupled), and the worm wheel that rotates by the rotational drive of the motor body Is transmitted to the rotating shaft. The rotation of the rotating shaft rotates an output drum fixed to the shaft, whereby the wire cable hung on the output drum is wound and sent out to open and close the slide door.

On the other hand, when the sliding door is manually opened and closed, the electromagnetic clutch is turned off, the worm wheel and the rotating shaft are disconnected (not connected), and the shaft and the output drum become free. That is, the rotational load on the output drum and the rotating shaft from the load side is reduced. As a result, the sliding door is easily opened and closed easily without requiring a large operating force.
JP 2002-327576 A

  By the way, in the motor of patent document 1, since the electrical wiring to a clutch is required in the deceleration part and it is necessary to ensure the wiring space in the deceleration part, this enlarges a deceleration part, ie, a motor. .

  The present invention has been made to solve the above-described problems, and its purpose is to transmit the driving force to the driven shaft side when driven from the drive shaft side, and to the driven shaft side when the drive shaft is not driven. A clutch that switches to a state that reduces the operating load from the clutch, and that can contribute to downsizing of a device that uses the clutch, a motor that uses the clutch, and a vehicle door opening and closing device that uses the motor as a drive source Is to provide.

  In order to solve the above problem, the invention according to claim 1 is provided between a drive shaft and a driven shaft disposed coaxially with the drive shaft, and the drive shaft is driven when driven from the drive shaft side. A clutch that operates to disconnect the driven shaft and the drive shaft when the drive shaft is not driven, while transmitting the rotational force from the drive shaft to the driven shaft side. A first rotating body provided coaxially so as to be rotatable integrally with the drive shaft, a second rotating body provided coaxially so as to be rotatable integrally with the driven shaft, and the first rotating body in a rotational direction. While maintaining a lockable state, the second rotating body is provided so as to be movable along a radial direction so as to be disposed at either a position that can be locked in the rotational direction or a position that cannot be locked, As the first rotating body rotates, the second rotating body receives a rotational force from the rotating body. And a connecting member that is moved to a position that can be locked in the rotation direction, and a biasing member that urges the connecting member to a position that cannot be locked in the rotation direction. This is the gist.

  According to this configuration, the clutch rotates the first rotating body as the driving shaft rotates by driving from the driving shaft side, and then the connecting member receives the rotational force of the first rotating body and receives the rotational force of the first rotating body. The first and second rotary bodies move in the radial direction toward the position where they can be locked with the second rotary body in the rotational direction against the urging force, and the first and second rotary bodies are driven and connected through the moved connecting members (in the rotational direction). Act to lock). In other words, since the clutch connects the drive shaft and the driven shaft so as to rotate together by driving from the drive shaft side, it is possible to operate the device on the driven shaft side by driving from the drive shaft side. . On the other hand, when the drive shaft is not driven, the clutch is disposed at a position where the coupling member cannot be locked with the second rotating body in the rotation direction by the biasing force of the biasing member. It is disconnected from the rotating body. In other words, since the clutch disconnects the drive shaft and the driven shaft when the drive shaft is not driven, the drive shaft is one of the operating loads when the driven device is operated manually, for example. It is not necessary to rotate the device on the drive shaft side including the drive shaft from the driven shaft side, and the operation load from the driven shaft side can be reduced. The mechanical clutch that operates in this manner eliminates the need for electrical wiring to the clutch, and the wiring space can be omitted in a device that uses this clutch, and the size can be reduced.

  According to a second aspect of the present invention, in the clutch according to the first aspect, the clutch is provided with respect to a non-movable attached body, and the coupling member is locked with the second rotating body. The gist of the invention is to provide a regulation guide member having a guide portion that guides to a position side that can be locked in the rotation direction.

  According to this configuration, when the connecting member receives the rotational force of the first rotating body and moves in the radial direction toward a position where the connecting member can be locked in the rotating direction, the connecting member is regulated and guided. The movement of the connecting member in the same direction is guided by being locked to a guide portion provided on the member. Therefore, since the radial movement of the connecting member becomes smooth, the operation of the clutch becomes more stable.

The gist of the invention described in claim 3 is that, in the clutch according to claim 1 or 2, a holding member for holding the coupling member and the biasing member is provided.
According to this configuration, since the connecting member and the urging member are held by the holding member, they are assembled and the clutch can be easily assembled. Further, since the connection member and the urging member affect other members and the influence of the other members on the connection member and the urging member is reduced, the operation of the clutch becomes more stable.

  According to a fourth aspect of the present invention, in the clutch according to the first aspect, the connecting member is connected to the first rotating body, and the connecting member is connected to the first rotating body as a fulcrum. Both end portions in the axial direction are provided so as to be tiltable so as to move along the radial direction, and when the drive shaft is rotated, the connecting portion is tilted with a fulcrum as a result of centrifugal force acting along with the rotation of the drive shaft. Accordingly, the gist is that the second rotary body is disposed at a position that can be locked in the rotation direction.

  According to this configuration, the connecting member connected to the first rotating body is configured such that the connecting portion between the connecting member and the first rotating body is supported by a centrifugal force that acts along with the rotation of the driving shaft when the driving shaft rotates. Is disposed at a position that can be locked with the second rotating body in the rotation direction. In this way, the connecting member is disposed at a position that can be locked in the rotational direction with the second rotating body by a simple operation that tilts with the connecting portion with the first rotating body as a fulcrum. Therefore, the configuration of the clutch can be simplified.

  According to a fifth aspect of the present invention, in a motor comprising a motor body and a speed reduction mechanism, a rotation shaft that is rotated by driving the motor body, and an input of the speed reduction mechanism that is disposed coaxially with the rotation shaft. The motor main body is driven, and the rotary shaft and the input shaft of the speed reduction mechanism are connected to transmit the rotational force from the rotary shaft to the speed reduction mechanism side. A clutch that operates to disconnect the input shaft and the rotary shaft of the speed reduction mechanism when not driven is provided, and the clutch is provided on the same axis so as to be rotatable integrally with the rotary shaft. A rotating body, a second rotating body provided coaxially so as to rotate integrally with an input shaft of the speed reduction mechanism, and the second rotating body while maintaining a state capable of being locked to the first rotating body in a rotation direction. Position that can be locked in the rotation direction It is provided so as to be movable along the radial direction so as to be arranged at any position where it cannot be stopped, and receives the rotational force from the rotating body as the first rotating body rotates, and rotates with the second rotating body. A connecting member that is moved to a position that can be locked in the direction, and a biasing member that biases the connecting member to a position that cannot be locked in the rotation direction. Is the gist.

  According to this configuration, the clutch rotates with the rotation of the rotating shaft driven by the motor body, and then the connecting member receives the rotational force of the first rotating body to generate the biasing force of the biasing member. Accordingly, the first and second rotating bodies are driven and connected (locked in the rotating direction) through the connecting member moved in the radial direction toward the position where the second rotating body can be locked in the rotating direction. Operates to That is, the clutch connects the rotation shaft of the motor main body and the input shaft of the speed reduction mechanism so as to rotate integrally by driving the motor main body, so that the load side device can be operated by driving the motor main body. . On the other hand, when the motor body is not driven, the clutch is disposed at a position where the connecting member cannot be locked with the second rotating body in the rotation direction by the biasing force of the biasing member. It is disconnected from the rotating body. In other words, the clutch is disconnected from the rotating shaft and the input shaft of the speed reduction mechanism when the motor main body is not driven. Therefore, for example, when operating the load side device manually, the clutch is one of the operating loads. It is not necessary to rotate the rotating shaft of a certain motor body from the load side, and the operation load from the load side can be reduced. Since the clutch that operates in this manner is provided at a location where the torque between the rotating shaft of the motor body and the input shaft of the speed reduction mechanism is small, the rigidity of the clutch components can be made relatively small and the size can be reduced. That is, individual clutch components can be made small, and the clutch can be miniaturized. Moreover, since this clutch is mechanical, no electrical wiring to the clutch is required, and the wiring space can be omitted. Thereby, since the clutch itself can be reduced in size, and the motor using the clutch can be reduced in size, the motor can be configured in a small size.

  According to a sixth aspect of the present invention, in the motor according to the fifth aspect of the present invention, the clutch is provided with respect to a non-movable attached body, and is engaged with the coupling member to connect the coupling member to the second. The gist of the invention is that a regulating guide member having a guide portion for guiding the rotating body to the position side that can be locked in the rotation direction is provided.

  According to this configuration, in the clutch, when the connecting member receives the rotational force of the first rotating body and moves in the radial direction toward the position where the connecting member can be locked with the second rotating body in the rotating direction, the connecting member Is locked to a guide portion provided on the regulation guide member, and the movement of the connecting member in the same direction is guided. Therefore, since the radial movement of the connecting member becomes smooth, the operation of the clutch becomes more stable.

  The gist of the invention described in claim 7 is the motor according to claim 5 or 6, wherein the clutch is provided with a holding member for holding the connecting member and the biasing member.

  According to this configuration, since the coupling member and the urging member are held by the holding member in the clutch, these are assembled, and the assembly is facilitated. Further, since the connection member and the urging member affect other members and the influence of the other members on the connection member and the urging member is reduced, the operation of the clutch becomes more stable.

  According to an eighth aspect of the present invention, in the motor according to any one of the fifth to seventh aspects, the coupling member of the clutch is engaged with the second rotating body in a rotation direction. A regulation guide member having a guide portion for guiding to a position where it can be stopped is fixed to or integrally formed with a brush holder for holding a power feeding brush provided in the motor body, or the speed reduction mechanism is accommodated. The gist of the invention is to be fixed to or integrally formed with the gear housing.

  According to this configuration, the regulation guide member that guides the coupling member of the clutch is fixed or integrally formed with the brush holder and the gear housing, which are existing motor components, so that the regulation guide member cannot be moved. Thus, the number of motor parts can be reduced.

  The invention according to claim 9 is the motor according to claim 5, wherein the connecting member is connected to the first rotating body, and the connecting member is connected to the first rotating body as a fulcrum. Both end portions in the axial direction are provided so as to be tiltable so as to move along the radial direction, and when the rotating shaft is rotated, the connecting portion is tilted with a fulcrum as a result of centrifugal force acting as the rotating shaft rotates. Accordingly, the gist is that the second rotary body is disposed at a position that can be locked in the rotation direction.

  According to this configuration, the connecting member connected to the first rotating body is configured to support the connecting portion between the connecting member and the first rotating body by a centrifugal force that acts along with the rotation of the rotating shaft when the rotating shaft rotates. Is disposed at a position that can be locked with the second rotating body in the rotation direction. In this way, the connecting member is disposed at a position that can be locked in the rotational direction with the second rotating body by a simple operation that tilts with the connecting portion with the first rotating body as a fulcrum. Therefore, it is possible to simplify the configuration of the clutch in this configuration, and as a result, it becomes possible to easily manufacture a motor including the clutch.

  A tenth aspect of the invention uses the motor with a clutch according to any one of the fifth to ninth aspects as a drive source, and opens and closes a door that opens and closes an opening provided in the vehicle by driving the motor. The vehicle door opening and closing device is configured to cause the motor body to be driven and the clutch to rotate the shaft of the motor body and the input shaft of the speed reduction mechanism when a command to automatically open and close the door is generated. And the door automatically opens and closes the door when the motor main body is not driven, and the clutch causes the input shaft and the rotation shaft of the speed reduction mechanism to be opened and closed. The gist is to reduce the operating load when the door is manually opened and closed.

  According to this configuration, in the device that automatically opens and closes the door of the vehicle by driving the motor, there is a need to configure the door so that it can be manually opened and closed. It is suitable as the drive source. In addition, since it is always required to reduce the mounting space in an apparatus mounted on a vehicle, the significance of downsizing the clutch and reducing the size of the motor is great.

  According to an eleventh aspect of the present invention, in the vehicular door opening / closing device according to the tenth aspect, the vehicular slide door opening / closing device for opening / closing the slide door for opening / closing the opening of the vehicle side portion or the rear portion of the vehicle is provided. The gist of the present invention is a vehicular back door opening and closing device for opening and closing a back door that opens and closes an opening.

  According to this configuration, the vehicle door is also intended for a sliding door or a back door. That is, a sliding door or a back door, particularly a door that can be opened and closed in the vertical direction, requires a relatively large operating force to manually open and close the door. Therefore, the significance of reducing the operating load from the load side by the clutch as described above is significant, and the door can be easily manually opened and closed.

  As described above, according to the present invention, it is possible to provide a clutch that can contribute to downsizing of the device, a motor using the clutch, and a vehicle door opening and closing device using the motor as a drive source.

(First embodiment)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a motor 1 of the present embodiment. As shown in FIG. 21, the motor 1 of the present embodiment is used as a drive source for a slide door opening / closing device 50 mounted on an automobile. In the present embodiment, the sliding door opening / closing device 50 is disposed in a sliding door 52 that is slidable along the side surface of the vehicle body 51. The slide door 52 opens and closes an entrance 51 a formed in the vehicle body 51, and is supported by a connector 54 that is movably connected along a guide rail 53 provided in the vehicle body 51. The coupling tool 54 moves along the guide rail 53 by winding and feeding the wire cable 55 by driving the motor 1, and the sliding door 52 opens and closes the entrance / exit 51 a by the movement of the coupling tool 54. It has become.

  The motor 1 according to the present embodiment, which is a driving source of the sliding door opening and closing device 50, is configured by a so-called geared motor including a motor body 2 and a speed reduction unit 3. The motor body 2 includes a yoke housing 4, a pair of magnets 5, an armature 6, a brush holder 7, and a pair of brushes 8.

  The yoke housing 4 is formed in a substantially bottomed flat cylindrical shape, and a magnet 5 is fixed to the inner surface thereof. A bearing 9 is provided at the center of the bottom of the yoke housing 4, and the bearing 9 rotatably supports the base end of the rotating shaft 10 of the armature 6.

  The opening 4a of the yoke housing 4 is formed in a flange shape, and is fixed to the opening 21a of the gear housing 21 described later with screws 11. In this fixing, the brush holder 7 is sandwiched and fixed by the opening 4 a of the yoke housing 4 and the opening 21 a of the gear housing 21.

  The brush holder 7 holds, in the yoke housing 4, a brush 12 that is in sliding contact with a commutator 13 that is fixed to the bearing 12 and the rotating shaft 10 that rotatably supports the tip of the rotating shaft 10 of the armature 6. Further, the portion of the brush holder 7 that protrudes from both housings 4 and 21 is a connector portion 7a for connecting to a vehicle body side connector (not shown) extending from the vehicle body side, and a plurality of portions are provided in the recess 7b of the connector portion 7a. The terminal 14 is exposed. These terminals 14 are inserted into the brush holder 7 and are electrically connected to the brush 8 and various sensors (not shown) such as a rotation sensor provided in the motor 1. And by connecting the connector part 7a with the vehicle body side connector, the motor 1 and a controller (not shown) provided on the vehicle body side are electrically connected, and power supply, output of sensor signals and the like are performed.

For such a motor body 2, the speed reduction unit 3 includes a gear housing 21, a worm shaft 22, a worm wheel 23, and a clutch 24.
The gear housing 21 is made of resin and accommodates a worm shaft 22, a worm wheel 23, and a clutch 24 inside. The gear housing 21 includes an opening 21a that faces the opening 4a of the yoke housing 4, and the brush holder 7 is interposed between the openings 4a and 21a.

  The gear housing 21 is a substantially cylindrical shaft housing cylinder portion 21b extending in the axial direction from the opening 21a for housing the worm shaft 22, and a wheel for housing the worm wheel 23 in communication with the shaft housing cylinder portion 21b. A housing recess 21c and a clutch housing recess 21d for housing the clutch 24 are provided at the base end (motor body 2 side) of the shaft housing tube portion 21b.

  A pair of bearings 25 and 26 are mounted on the shaft accommodating cylinder portion 21b with a predetermined interval. The worm shaft 22 is inserted from the opening side of the shaft accommodating cylinder portion 21b, and both ends sandwiching the worm portion 22a are rotatably supported by bearings 25 and 26, respectively, and are arranged coaxially with the rotary shaft 10. . A thrust receiving ball 27 and a plate 28 for receiving the thrust load of the worm shaft 22 are provided at the tip of the worm shaft 22.

  Further, a ring-shaped sensor magnet 29 that is multipolarly magnetized in the circumferential direction is mounted between the worm portion 22a and the portion supported by the bearing 26 in the worm shaft 22 so as to rotate integrally. On the other hand, a hall element 30 that detects a change in the magnetic field accompanying the rotation of the sensor magnet 29 is disposed in a portion of the shaft accommodating cylinder portion 21 b that faces the outer peripheral surface of the sensor magnet 29. The Hall element 30 detects a magnetic field change accompanying the rotation of the sensor magnet 29 and detects rotation information such as the rotation speed and rotation speed of the sensor magnet 29, that is, the worm shaft 22.

  A worm wheel 23 engaged with the worm portion 22a of the worm shaft 22 is rotatably accommodated in the wheel accommodating recess 21c. An output shaft 23a is connected to the worm wheel 23 so as to rotate integrally. A drive pulley (not shown) on which the wire cable 55 for opening and closing the slide door 52 is opened is connected to the output shaft 23a so as to rotate integrally.

  The clutch housing recess 21d houses a mechanical clutch 24 that connects and disconnects the worm shaft 22 and the rotary shaft 10. As shown in FIGS. 2 and 3, the clutch 24 includes an input-side rotating body 31 provided on the rotating shaft 10 side, an output-side rotating body 32 provided on the worm shaft 22 side, and the rotating bodies 31, 32. And a contact member 33 provided.

  The input-side rotator 31 is formed of, for example, resin, a substantially cylindrical shaft portion 31a, a connection hole 31b that is provided at the base end portion of the shaft portion 31a and is coaxially connected to the rotation shaft 10, A drive disc portion 31c having a plate shape in the radial direction is provided at the tip of the shaft portion 31a. The connecting hole 31b of the shaft portion 31a is formed in the same hole shape as the tip end portion of the rotating shaft 10 extending from the motor body 2, for example, when not formed, having a D-shaped cross section or a two-sided width shape. . That is, the input-side rotating body 31 is connected to the rotating shaft 10 so as to be integrally rotatable by inserting the tip end portion of the rotating shaft 10 into the connecting hole 31b.

  A driving disk portion 31c that is coaxial with the shaft portion 31a is provided at the tip of the shaft portion 31a. The drive disk portion 31c has a substantially triangular shape as a whole, and three engaging portions 31d of the same shape, each of which has a substantially triangular shape, are provided at equal intervals (120 ° intervals) in the circumferential direction. Each engaging portion 31d has a curved shape in which each side is slightly expanded outward. On the other hand, a recessed portion 31e that is recessed radially inward is formed between the engaging portions 31d. Incidentally, each recessed part 31e is similarly provided in the circumferential direction at equal intervals (120 degree intervals).

  The output-side rotator 32 is formed integrally with the base end portion of the shaft 22 so as to be coaxial with the worm shaft 22 (a configuration in which the worm shaft 22 and the worm shaft 22 are connected to each other is also possible). For example, it is made of metal. The output-side rotator 32 is formed with a recess 32a that is recessed on the input-side rotator 31 side and that accommodates the drive disk portion 31c of the input-side rotator 31, and a worm shaft around the recess 32a. An outer ring portion 32b is formed which is coaxial with the drive disk portion 31c of the input side rotator 31. On the inner peripheral side of the outer ring portion 32b, twelve connecting concave portions 32c having the same shape and opened to the radially inner side and the input side rotating body 31 side are formed at equal intervals. Each connection recessed part 32c has comprised the trapezoid shape expanded toward the radial direction inner side. And if the drive disc part 31c of the input side rotary body 31 is arrange | positioned in the accommodation recessed part 32a, the outer ring | wheel part 32b and the drive disc part 31c which have the connection recessed part 32c will be arrange | positioned on the same plane.

  The contact member 33 is formed of resin, for example, and three contact members 33 are used for the clutch 24. The contact member 33 includes a main body portion 33a having a substantially rectangular parallelepiped shape, a connecting convex portion 33b standing in a columnar shape from one side surface of the main body portion 33a, and a surface of the main body portion 33a opposite to the connecting convex portion 33b. And a locking projection 33c standing in a substantially pentagonal prism shape. Each contact member 33 is arranged at equal intervals (120 ° intervals) in the circumferential direction with respect to the plate support 34 arranged so as to cover the output side rotating body 32 and the drive disk portion 31c of the input side rotating body 31. Each is attached so as to be movable in the radial direction.

  Incidentally, the plate support 34 is formed of, for example, resin, and has a shape having a circumferential surface having a large diameter on the rotating shaft 10 side and a small diameter on the worm shaft 22 side, and a bearing 38 (see FIG. 1) on the gear housing 21. It is supported rotatably through the. The plate support 34 is formed with an insertion hole 34a having a circular cross section through which the shaft portion 31a of the input-side rotator 31 is inserted at the center of the rotation shaft side end surface, and penetrates from the insertion hole 34a to the worm shaft side end surface. A housing hole 34b having a circular cross section is formed. The output side rotating body 32 of the worm shaft 22 is accommodated in the accommodation hole 34b (see FIG. 4A).

  On the end surface of the plate support 34 on the rotating shaft side, three receiving grooves 34c are formed around the insertion holes 34a at equal intervals (120 ° intervals) so as to extend from the insertion holes 34a in the radial direction. Each receiving groove 34c has a quadrangular cross section corresponding to the main body 33a of the contact member 33, and the radially outer edge is closed. Each housing groove 34c can accommodate the main body portion 33a of the contact member 33 from the axial direction, and the main body portion 33a can move radially along the housing groove 34c (moves in the circumferential direction). Impossible). In this case, the connecting convex portion 33b of each contact member 33 is disposed in the accommodating concave portion 32a (outer ring portion 32b) of the output side rotating body 32 accommodated in the accommodating hole 34b of the plate support 34, and is input to the outer ring portion 32b. It arrange | positions in the clearance gap between the drive disc part 31c of the side rotary body 31. FIG.

  The coil springs 35 are accommodated in the respective housing grooves 34 c of the plate support 34 on the radially outer side of the main body portion 33 a of the contact member 33. Each coil spring 35 biases the main body portion 33a of each contact member 33 radially inward. Then, after the contact member 33 and the coil spring 35 are accommodated in each accommodation groove 34 c, a disk-like lid body 36 is fixed to the plate support 34, and the accommodation groove 34 c is closed by the lid body 36. The lid body 36 is formed with a circular insertion hole 36a corresponding to the insertion hole 34a of the plate support 34 at the center, and the locking projection 33c of each contact member 33 is provided with the lid body 36. A notch groove 36b is formed so as to extend radially outward from the insertion hole 36a at the center. Each notch groove 36b is a plate support that does not hinder the movement of each locking projection 33c protruding toward the rotary shaft 10 when the contact member 33 moves in the radial direction along the housing groove 34c of the main body 33a. 34 corresponding to each of the receiving grooves 34c.

  The front end portion of each locking projection 33 c protruding from the lid body 36 can be locked to the outer peripheral surface of a substantially hexagonal plate-like plate member 37 disposed to face the lid body 36. Each locking projection 33c has a pentagonal prism shape, and locks with the outer peripheral surface of the plate member 37 at a corner portion on the radially inner side. The plate member 37 is made of resin, for example, and is fixed to the brush holder 7 with screws or the like so as not to move (see FIG. 1). The plate member 37 can be integrally formed with the brush holder 7. A circular insertion hole 37a corresponding to the insertion hole 34a of the plate support 34 is formed in the central portion of the plate member 37, and the outer peripheral edge has a radial direction in the middle portion of each portion corresponding to six sides. Concave portions 37b that are slightly recessed in a V shape toward the inside are provided. That is, each corner portion 37c of the outer edge portion of the plate member 37 slightly protrudes outward in the radial direction.

  And if the connection convex part 33b of each contact member 33 is arrange | positioned in the innermost part of the recessed part 31e of the drive disc part 31c, or its vicinity, and it arrange | positions radially inside (refer FIG. 4), each connection convex The portion 33 b is arranged at a position where it cannot be locked with the outer ring portion 32 b of the output side rotating body 32. In this case, the output side rotator 32 and the input side rotator 31 are disconnected. At this time, the locking projections 33c of the contact members 33 receive the urging force of the coil springs 35 and come into contact with the concave portions 37b of the plate member 37 to be locked in the circumferential direction. It will be in the state (locking state) where rotation of plate support 34 to which is attached is controlled.

  On the other hand, the rotation of the input-side rotator 31 moves the connecting convex portion 33b of each contact member 33 radially outward along the side surface of each engaging portion 31d of the drive disc portion 31c. When arranged in the coupling recess 32c of the outer ring portion 32b, each coupling projection 33b is engaged with the outer ring portion 32b in the rotational direction against the urging force of the coil spring 35 (FIG. 9, etc.). reference). In this case, the output-side rotator 32 and the input-side rotator 31 are drivingly connected via the contact members 33 (connection protrusions 33b). Further, at this time, the locking protrusions 33c of the contact members 33 move outward from the corners 37c of the plate member 37 and move away from each other by the movement of the contact members 33 radially outward. The convex portion 33 c is in a state where it cannot be locked to the plate member 37. Thereby, the rotation restrained state of the plate support 34 is eliminated, and the plate support 34 to which each contact member 33 is attached is rotated based on the rotation of the input side rotating body 31, and the connecting convex portion 33 b of each contact member 33 is rotated. The output-side rotator 32 that is locked in the circumferential direction rotates.

  Then, the dimensions of the contact members 33, the outer ring portion 32b of the output side rotating body 32, the drive disk portion 31c of the input side rotating body 31, and the like are set so that such an operation is performed smoothly. Yes.

  In the clutch 24 configured as described above, when no rotational driving force is generated in the rotary shaft 10 as in the case where the motor body 2 is not driven, the coil spring 35 urges the contact member 33 radially inward, As shown in FIG. 4, the connecting convex portion 33 b of each contact member 33 is guided to the innermost side of each concave portion 31 e of the drive disk portion 31 c in the input side rotating body 31 and the engagement of each contact member 33. The stop convex portion 33 c is guided to the innermost side of each concave portion 37 b of the plate member 37.

  It should be noted that the connecting projections 33b of the contact members 33 are located in the innermost portions of the concave portions 31e of the drive disc portion 31c only by the urging force of the coil spring 35, and the locking projections 33c are the concave portions of the plate member 37. When the worm shaft 22 is rotated from the load side and the outer ring portion 32b of the output side rotating body 32 is rotated, the position is corrected by the collision of the respective connecting projections 33b with the outer ring portion 32b. Then, it is guided to the innermost side of each recessed portion 31e of the drive disc portion 31c. Further, due to the impact of the outer ring portion 32 b on the connection convex portions 33 b, the locking convex portions 33 c are guided to the innermost side of the concave portions 37 b of the plate member 37.

  And if the connection convex part 33b of each contact member 33 is arrange | positioned in the innermost part of each recessed part 31e of the drive disc part 31c, or its vicinity, each connection convex part 33b will be the outer ring | wheel part 32b of the output side rotary body 32. It is arranged at a position where it cannot be locked. Therefore, the worm shaft 22 and the rotary shaft 10 are disconnected, and the rotary shaft 10 that becomes the rotational load of the output shaft 23 a from the load side is disconnected from the worm shaft 22. Thereby, since the rotational load of the output shaft 23a from the load side is reduced, the rotation of the output shaft 23a from the load side is facilitated, and an easy opening / closing operation of the slide door 52 by manual operation is possible.

  Further, the engaging projections 33 c of the contact members 33 are disposed in the recessed portions 37 b of the plate member 37, so that the contact members 33 are engaged with the plate member 37 in the circumferential direction. Since the plate member 37 is immovable, the rotation of the plate support 34 to which each contact member 33 is attached is suppressed, and the output side rotating body 32 (outer ring portion 32b) that rotates when the sliding door 52 is manually opened and closed. And accompanying rotation is prevented.

  On the other hand, when the motor body 2 is driven to automatically open and close the slide door 52 and the rotating shaft 10 rotates, the input-side rotating body 31 rotates together with the rotating shaft 10. Then, as shown in FIG. 5, due to the rotation of the drive disc portion 31c, the connecting convex portion 33b of each contact member 33 is guided on the side surface of each engagement portion 31d of the drive disc portion 31c and pushed outward in the radial direction. Thus, each contact member 33 moves radially outward against the urging force of the coil spring 35.

  At this time, the connection support 33b of each contact member 33 receives a rotational force from the drive disc 31c, so that the plate support 34 also rotates in the same direction. Then, the locking projections 33c of the contact members 33 are guided by the inclined surfaces of the concave portions 37b of the plate member 37 to assist the movement of the contact members 33 in the radially outward direction. The movement is smooth. Then, the connecting convex portion 33 b of the contact member 33 moved in the radial direction goes into a connecting concave portion 32 c provided in the outer ring portion 32 b of the output side rotating body 32.

  When the drive disk portion 31c of the input side rotator 31 is further rotated, the connection convex portion 33b of each contact member 33 is rotated with the side surface of the connection concave portion 32c of the outer ring portion 32b of the output side rotator 32 as shown in FIG. Engage with. Then, as shown in FIG. 7, by further rotation of the input-side rotator 31, the connection convex portion 33b of each contact member 33 is guided to the side surface of each engagement portion 31d of the drive disc portion 31c, and As shown in FIG. 8, each contact member 33 is further moved in the radial direction by the stop convex portion 33c being guided by the inclined surface of the concave portion 37b of the plate member 37, and each connecting convex portion 33b is connected to the outer ring portion 32b. It fits deeply into the connecting recess 32c.

  And as shown in FIG. 9, the connection convex part 33b of each contact member 33 is arrange | positioned in the outer ring part 32b in the engagement state in the rotation direction, and the outer ring part 32b from the input side rotary body 31 is arranged. While the rotational force is transmitted, the locking projection 33c of each contact member 33 is disengaged from the outer peripheral surface of the plate member 37, so that the plate support 34 is smoothly rotated. Incidentally, the operations of FIGS. 5 to 9 are the same in any rotation direction.

  Thus, the rotational force of the rotating shaft 10 driven by the motor body 2 is transmitted from the input-side rotating body 31 to the outer ring portion 32b of the output-side rotating body 32 via the connecting projections 33b of the contact members 33, and the worm shaft 22 and The output shaft 23a rotates, and the slide door 52 is automatically opened and closed by driving the motor 1.

  In the slide door opening / closing device 50 using the motor 1 having such a configuration as a drive source, when a command to automatically open / close the slide door 52 is generated, the motor body 2 is rotationally driven. Then, as the rotary shaft 10 of the motor body 2 rotates, the input-side rotating body 31 rotates in the clutch 24, and then each contact member 33 moves radially outward against the biasing force of the coil spring 35. The input side rotating body 31 and the output side rotating body 32 are drivingly connected (locked in the rotational direction) through the moved contact members 33. That is, since the rotary shaft 10 of the motor body 2 and the worm shaft 22 are connected by the clutch 24 so as to rotate integrally, the rotation of the rotary shaft 10 due to the rotation drive of the motor body 2 is transferred to the worm shaft 22 via the clutch 24. As a result, the worm shaft 22 rotates. The rotation of the worm shaft 22 rotates the drive pulley connected to the output shaft 23a via the worm wheel 23, and operates the wire cable 55 shown in FIG. Thereby, the automatic opening / closing operation | movement of the slide door 52 by the drive of the motor 1 is performed.

  On the other hand, when the slide door 52 is manually opened / closed, a rotational force acts on the output shaft 23a via the wire cable 55 and the drive pulley by a manual opening / closing operation force of the slide door 52. At this time, in the clutch 24, each contact member 33 is disposed at a radially inner position that cannot be locked to the output-side rotating body 32 by the urging force of the coil spring 35, so that the rotating shaft 10 and the worm shaft 22 are disconnected. It is in the state. That is, since the rotating shaft 10 of the motor main body 2 that becomes a heavy load during the manual operation is disconnected, the rotational force of the output shaft 23a from the load side is transmitted to the worm wheel 23 and the worm shaft 22, but the rotating shaft 10, and the rotational load on the output shaft 23 a from the load side is reduced. Thereby, when a rotational force is applied to the output shaft 23a through the slide door 52 by manual operation, the output shaft 23a with reduced rotational load easily rotates, and the slide door 52 does not particularly require a large operating force. Easy manual opening and closing.

  In this embodiment, between the worm shaft 22 and the worm wheel 23, transmission of driving force from the motor body 2 side when the sliding door 52 is automatically opened and closed, and output from the output shaft 23a side when manually opening and closing. The lead of the worm portion 22a on the worm shaft 22 (the distance traveled by one rotation) is set in advance by experiments, simulations, or the like so that the transmission of the driving force is optimal in both cases. Thereby, in this Embodiment, the further smooth opening and closing is implement | achieved in both the automatic opening and closing of the sliding door 52, and manual opening and closing.

Next, characteristic actions and effects of the present embodiment will be described.
(1) In the clutch 24 of the present embodiment, the input-side rotating body 31 rotates with the rotation of the rotating shaft 10 driven by the motor body 2, and then each contact member 33 generates the rotational force of the input-side rotating body 31. In response to the biasing force of the coil spring 35, it moves in the radial direction toward the position where it can be locked in the rotational direction with the output-side rotator 32, and the input-side rotator 31 passes through the moved contact members 33. And the output-side rotator 32 are driven and connected (locked in the rotational direction). That is, the clutch 24 connects the rotating shaft 10 of the motor main body 2 and the worm shaft 22 of the speed reduction unit 3 so as to rotate integrally by driving the motor main body 2, so that the slide door 52 is operated by driving the motor main body 2. It is possible to make it. On the other hand, when the motor body 2 is not driven, the clutch 24 is disposed at a position where each contact member 33 cannot be locked in the rotation direction with the output side rotating body 32 by the urging force of the coil spring 35. The rotating body 32 is disconnected from the input-side rotating body 31. That is, the clutch 24 is one of the operating loads when the slide door 52 is manually operated because the rotary shaft 10 and the worm shaft 22 are disconnected when the motor body 2 is not driven. It is not necessary to rotate the rotating shaft 10 of the motor body 2 from the load side, and the manual operation load can be reduced.

  Since the clutch 24 that operates in this manner is provided at a location where the torque between the rotating shaft 10 of the motor body 2 and the worm shaft 22 that is the input shaft of the speed reduction mechanism is small, the rigidity of the clutch components is made relatively low. It can be configured in a small size. That is, the individual clutch components can be made smaller, and the clutch 24 can be reduced in size. In addition, since the clutch 24 is mechanical, no electrical wiring to the clutch 24 is necessary. Therefore, in the motor 1 using the clutch 24, the wiring space can be omitted and the size can be reduced. Further, as in the present embodiment, since it is used for the sliding door opening and closing device 50 that is a vehicle mounting device that always requires a small mounting space, the significance of the downsizing of the clutch 24 and the physique of the motor 1 is as follows. large. Moreover, since there is no power consumption in the clutch 24, the motor 1 can be made low power consumption.

  (2) The clutch 24 according to the present embodiment has a concave portion 37b that engages with each contact member 33 and guides the contact member 33 to a position side that can be engaged with the output side rotating body 32 in the rotation direction. A plate member 37 is fixed to the brush holder 7. That is, when each contact member 33 receives the rotational force of the input-side rotating body 31 and moves in the radial direction toward the position where the output-side rotating body 32 can be locked in the rotating direction by the plate member 37, The contact member 33 is engaged with a concave portion 37b provided on the plate member 37, and the movement of the contact member 33 in the same direction is guided. Therefore, since the radial movement of each contact member 33 is smooth, the operation of the clutch 24 can be further stabilized. Further, since the plate member 37 is fixed to the brush holder 7 which is an existing motor component, a member for fixing the plate member 37 is not required separately, and the number of components of the motor 1 can be reduced.

  (3) In the clutch 24 of the present embodiment, each contact member 33 and the coil spring 35 are held by the plate support 34. Therefore, these are assembled, and the assembly of the clutch 24 is easy. In addition, since the contact members 33 and the coil springs 35 affect other members and the influence of these members on these members is reduced, the operation of the clutch 24 is further stabilized. Can do.

  (4) The clutch 24 according to the present embodiment is configured to operate in both rotational directions with respect to the operation of both the rotating shaft 10 and the worm shaft 22, and thus is driven to rotate in this way. Adaptability to motor 1 etc. is high.

  (5) In this embodiment, since the thrust load of the worm shaft 22 is received by the thrust receiving ball 27, the rotational load of the worm shaft 22 is reduced, and the rotational load of the output shaft 23a from the load side is reduced. Can contribute.

(Second Embodiment)
The clutch 24a according to the second embodiment shown in FIGS. 10 and 11 has a partial shape of the output-side rotating body 41 and a partial shape of the plate member 42 with respect to the clutch 24 of the first embodiment. Is changed, and the other components are of the same shape. The same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  The output-side rotator 41 has the same housing recess 41a and outer ring portion 41b as in the first embodiment, and includes six connection recesses 41c provided in the outer ring portion 41b. That is, the number of connection recesses 41c in the present embodiment is halved with respect to the number (12) of connection recesses 32c of the output-side rotator 32 in the first embodiment. Similarly, each connection recessed part 41c has comprised the trapezoid shape expanded toward the radial direction inner side.

  Further, the plate member 42 is provided with an insertion hole 42a similar to the above at the center, and the outer peripheral surface is wavy, that is, 18 concave portions 42b and convex portions 42c are alternately provided. That is, the number of the concave portions 42b and the convex portions 42c in the present embodiment is three as compared to the number of the concave portions 37b and the corner portions 37c (six) of the plate member 37 in the first embodiment. It has been doubled. The plate member 42 is fixed to or integrally formed with the brush holder 7.

  The clutch 24a configured as described above operates in substantially the same manner as the clutch 24 described above. That is, when no rotational driving force is generated on the rotary shaft 10 as in the case where the motor main body 2 is not driven, each contact member 33 is urged radially inward by the coil spring 35 as shown in FIG. The connecting convex portion 33 b of the contact member 33 is disposed at a position where it cannot be locked with the outer ring portion 41 b of the output side rotating body 41. Thereby, the worm shaft 22 and the rotary shaft 10 are disconnected, and an easy opening / closing operation of the slide door 52 by manual operation is possible.

  Further, since the locking projections 33c of the contact members 33 are disposed in the concave portions 42b of the plate member 42, the rotation of the plate support 34 is suppressed, and the output side rotation that rotates when the slide door 52 is manually opened and closed. Along with the body 41 (outer ring portion 41b) is prevented. Since many concave portions 42b of the plate member 42 are provided in the circumferential direction, the locking convex portions 33c of the contact members 33 are easily fitted, and the engagement force in the rotational direction is large.

  On the other hand, when the motor main body 2 is driven to automatically open and close the slide door 52 and the input side rotating body 31 rotates together with the rotary shaft 10, as shown in FIG. 13, the drive disk portion 31c (each engagement portion 31d). As a result of this rotation, the connecting projection 33b of each contact member 33 is pushed radially outward against the biasing force of the coil spring 35.

  At this time, the connection support 33b of each contact member 33 receives a rotational force from the drive disk 31c, so that the plate support 34 also rotates in the same direction, and the locking protrusion 33c of each contact member 33 becomes the plate member 42. The contact members 33 are guided to the slopes of the concave portions 42b to assist the outward movement of the contact members 33 in the radial direction. And the connection convex part 33b of the contact member 33 moved to radial direction goes into the connection recessed part 41c provided in the outer ring | wheel part 41b of the output side rotary body 41. As shown in FIG.

  When the drive disk portion 31c of the input-side rotator 31 is further rotated, the concave portion 42b of the plate member 42 is circumferentially connected to the connecting recess 41c of the outer ring portion 41b of the output-side rotator 41 as shown in FIGS. As shown in FIG. 17, the latching convex portion 33c of each contact member 33 is repeated several times as it enters the concave portion 42b arranged in the rotational direction or gets over the convex portion 42c. The connecting projection 33b of each contact member 33 engages with the side surface of the connecting recess 41c of the outer ring portion 41b in the rotational direction.

  Further, by the further rotation of the input-side rotator 31, the connection convex portion 33b of each contact member 33 is guided to the side surface of each engagement portion 31d of the drive disk portion 31c and deeply enters the connection concave portion 41c of the outer ring portion 41b. The engaging protrusion 33c of each contact member 33 is disengaged from the outer peripheral surface of the plate member 42, and the rotational force from the input side rotating body 31 is transmitted to the outer ring portion 41b. Thus, also in the present embodiment, the rotational force of the rotary shaft 10 driven by the motor main body 2 is transmitted to the worm shaft 22 and the output shaft 23a side, and the slide door 52 automatically opens and closes by driving the motor 1. ing.

Even if the clutch 24a of the present embodiment configured as described above is used, the same effect as that of the first embodiment can be obtained.
(Third embodiment)
A clutch 61 of the third embodiment shown in FIG. 18 is provided in the motor 1 in place of the clutch 24 of the first embodiment. The same components as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 18, the clutch 61 includes a support rotating body 62 fixed to the tip end portion (the end portion on the worm shaft 22 side) of the rotating shaft 10 and a pair of tilting members disposed on the side of the rotating shaft 10. 63, 64, a pair of weights 65, 66 disposed between the rotating shaft 10 and the tilting members 63, 64, and a base provided on the base end of the worm shaft 22 (end on the rotating shaft 10 side). A locking portion 67 and a spring 68 disposed on the outer periphery of the tilting members 63 and 64 are provided.

  The columnar locked portion 67 is integrally provided at the base end portion of the worm shaft 22 so as to be coaxial with the worm shaft 22, and the outer peripheral surface thereof is knurled. In the present embodiment, the outer diameter of the worm shaft 22 and the outer diameter of the locked portion 67 are formed to be substantially equal.

  The support rotating body 62 includes an annular fixed portion 62a that is press-fitted into the distal end portion of the rotary shaft 10, and a pair of support portions 62b and 62c that protrude outward from the fixed portion 62a in the radial direction. ing. The fixed portion 62a can be integrally rotated with the rotary shaft 10 by being press-fitted into the rotary shaft 10, and the fixed portion 62a and the rotary shaft 10 are coaxial. The support portions 62b and 62c are provided at positions at equal angular intervals (180 ° intervals in the present embodiment) in the circumferential direction, and have a substantially rectangular plate shape. In addition, support holes 62d and 62e penetrating in the thickness direction (the same as the direction orthogonal to the axial direction of the rotating shaft 10) are formed in the central portions of the support portions 62b and 62c, respectively.

  The tilting members 63 and 64 have the same shape as each other and are arranged symmetrically with respect to the rotating shaft 10. Each tilting member 63, 64 includes tilting main body parts 63a, 64a extending in parallel with the rotary shaft 10, and sandwiching parts 63b, 64b integrally provided at the end of each tilting main body part 63a, 64a on the worm shaft 22 side. It is composed of Each tilt body 63a, 64a has a curved shape with a smaller curvature than the outer peripheral surface of the rotating shaft 10. Further, the sandwiching parts 63b and 64b are formed obliquely with respect to the tilting main body parts 63a and 64a, so that their tips are arranged radially inward of the tilting main body parts 63a and 64a. And the front-end | tip of each clamping part 63b and 64b is the contact parts 63c and 64c which make the curved shape of the curvature equal to the outer diameter of the said to-be-latched part 67. As shown in FIG. Each contact portion 63c, 64c has a plurality of tooth portions 63d, 64d arranged in the circumferential direction, and the cross-sectional shape (cross-sectional shape in a direction perpendicular to the axial direction) of these tooth portions 63d, 64d is, for example, a triangular shape. ing.

  In addition, holding grooves 63e and 64e that extend in the circumferential direction and open to the outer peripheral side are formed at the ends of the tilting main body portions 63a and 64a opposite to the sandwiching portions 63b and 64b, respectively. Further, in each tilting main body 63a, 64a, a connecting hole penetrating along the radial direction at the center in the circumferential direction at a position closer to the sandwiching parts 63b, 64b than the central part in the axial direction. 63f and 64f are respectively formed. When viewed from the radial direction, these coupling holes 63f and 64f have a circumferential width equal to or slightly wider than the circumferential width of the support portions 62b and 62c, and an axial width of the shaft of the support portions 62b and 62c. It has a square shape that is wider than the length of the direction. Still further, pin insertion holes 63g and 64g penetrating the tilting main body parts 63a and 64a along the direction orthogonal to the axial direction of the rotary shaft 10 are formed on both sides of the connecting holes 63f and 64f in the circumferential direction. Yes. One tilting member 63 of the pair of tilting members 63 and 64 inserts the support portion 62b into the connection hole 63f and inserts the columnar support pin 71 into the pin insertion hole 63g and the support hole 62d. The support rotating body 62 is connected to be tiltable. Similarly, the other tilting member 64 inserts the support portion 62c into the connection hole 64f, and inserts the columnar support pin 72 into the pin insertion hole 64g and the support hole 62e, so that the rotation member 62 is supported. It is connected so that it can tilt.

  When the tilt members 63 and 64 connected to the support rotating body 62 via the support pins 71 and 72 are tilted with the support pins 71 and 72 as fulcrums, both ends in the axial direction thereof are radially directed. Move along. Further, in a state where the tilting members 63 and 64 are connected to the support rotating body 62, the contact portions 63c and 64c are opposed to the locked portion 67 in the radial direction, and the clamping portions 63b and 64b are used in the radial direction. The locked portion 67 can be clamped from both sides. Further, in the same state, when the tilting main body parts 63 a and 64 a are parallel to the rotation shaft 10, the tilting members 63 and 64 are concentric with respect to the axis of the rotation shaft 10 when viewed from the axial direction. It has a shape.

  The rotating shaft 10 includes a holding body 81 that holds the pair of weight bodies 65 and 66 at a portion that is opposed to the end portions of the tilting main body portions 63a and 64a opposite to the clamping portions 63b and 64b in the radial direction. The rotary shaft 10 is fixed so as to be rotatable together. As shown in FIG. 19, the holding body 81 has a cylindrical shape, and the thickness thereof is the inner peripheral surface of the tilting main body portions 63 a and 64 a arranged in parallel to the rotation shaft 10 and the outer periphery of the rotation shaft 10. It is formed equal to the distance between the surfaces.

  The holding body 81 is provided with a pair of holding recesses 81 a and 81 b that are symmetrical to each other across the axis of the rotary shaft 10 and open to the outer peripheral side. Of these two holding recesses 81a and 81b, the opening of one holding recess 81a faces the tilting main body 63a, and the opening of the other holding recess 81b faces the tilting main body 64a. As shown in FIG. 18, the holding recesses 81a and 81b have a quadrangular shape when viewed from the radial direction, and the pair of inner side surfaces facing each other in the axial direction are mutually connected in the holding recesses 81a and 81b. A pair of inner side surfaces that are parallel and opposite to each other in the circumferential direction are parallel to each other.

  The pair of weights 65 and 66 accommodated in the pair of holding recesses 81a and 81b have an arc shape corresponding to the holding recesses 81a and 81b, and the outer peripheral surface thereof is the same as the outer peripheral surface of the holding body 81. It is one. The weights 65 and 66 are formed such that both end surfaces in the axial direction are parallel to each other and both end surfaces in the circumferential direction are parallel to each other. When the weights 65 and 66 are accommodated in the corresponding holding recesses 81a and 81b, both end surfaces in the axial direction and both end surfaces in the circumferential direction are in contact with the inner side surfaces of the holding recesses 81a and 81b, respectively. Thus, it is movable to the outer peripheral side along the radial direction while being guided by the inner side surfaces of the holding recesses 81a and 81b.

  As shown in FIG. 19, the spring 68 is fitted to the tilting members 63 and 64 so as to pass through the holding grooves 63e and 64e provided in the tilting main body parts 63a and 64a. The spring 68 is formed by forming a wire in a C-shape (see FIG. 18), and more specifically, a portion closer to the proximal end of the rotating shaft 10 than the connection holes 63f and 64f in the tilting members 63 and 64, more specifically. The ends of the tilting members 63 and 64 opposite to the sandwiching portions 63b and 64b are urged toward the inside in the radial direction.

  In this embodiment, the mass of the weights 65 and 66 is such that the centrifugal force acting on the weights 65 and 66 rotating together with the rotary shaft 10 when the motor body 2 is driven is greater than the urging force of the spring 68. Is set to Further, the fulcrum at the time of tilting of the tilting members 63 and 64 (that is, the support pins 71 and 72) is set to “F”, and the force point receiving the force radially outward from the weights 65 and 66 in the tilting members 63 and 64 is “S”. Furthermore, when the action point of applying a force toward the center of the locked portion 67 in the radial direction to the locked portion 67 at the contact portions 63c and 64c is “A”, the tilting members 63 and 64 are The distance L1 from the fulcrum F to the force point S is set to be longer than the distance L2 from the fulcrum F to the action point A. Furthermore, the masses and the distances L1 and L2 of the weights 65 and 66 cause the tilting members 63 and 64 to tilt by moving the weights 65 and 66 to the outer peripheral side due to the centrifugal force acting with the rotation of the rotary shaft 10. In this case, the tilting members 63 and 64 can be locked to the locked portion 67 in the rotation direction by holding the locked portion 67 by the holding portions 63b and 64b moved to the inner peripheral side along the radial direction. Is set to

  In the clutch 61 configured as described above, when no rotational driving force is generated on the rotary shaft 10 as in the case where the motor main body 2 is not driven, one end portions of the tilt members 63 and 64 (with the support pins 71 and 72 interposed therebetween) Since the spring 68 urges the clamping portions 63b and 64b on the opposite side to the radially inner side, the tilting members 63 and 64 are tilted by the biasing force as shown in FIG. While 63a, 64a contact | abuts to the outer peripheral surface of the holding body 81, the contact parts 63c and 64c of the clamping parts 63b and 64b are maintained in the state which is not in contact with the to-be-latched part 67. FIG. That is, the tilting members 63 and 64 are arranged at positions where they cannot be locked with the locked portion 67 in the rotation direction. Thereby, the worm shaft 22 and the rotary shaft 10 are disconnected, and an easy opening / closing operation of the slide door 52 by manual operation is possible (see FIG. 21). At this time, the tilting main body portions 63 a and 64 a are parallel to the rotation shaft 10.

  On the other hand, when the motor body 2 is driven to automatically open and close the slide door 52, the support rotating body 62 rotates with the rotation of the rotating shaft 10, and the tilt members 63 and 64 rotate the rotational force of the support rotating body 62. And rotate. In addition, the weights 65 and 66 rotate together with the holding body 81 as the rotation shaft 10 rotates. At this time, as shown in FIG. 20, due to the action of the centrifugal force accompanying the rotation of the rotating shaft 10, the weights 65, 66 move to the outer peripheral side against the urging force of the spring 68, and the tilting members 63, 64 One end (the end opposite to the holding portions 63b and 64b across the support pins 71 and 72) is pressed radially outward. Then, the tilting members 63 and 64 are tilted with the support pins 71 and 72 as fulcrums by the pressing force from the weights 65 and 66, and the other ends of the tilting members 63 and 64 (end portions on the clamping portions 63b and 63c side). ) Is moved to the inner peripheral side along the radial direction, and the contact parts 63 c and 64 c abut against the locked part 67. That is, the tilting members 63 and 64 are disposed at positions that can be locked with the locked portion 67 in the rotation direction.

  At this time, the pressing force applied from the weights 65 and 66 to the one end of the tilting members 63 and 64 is tilted by the tilting members 63 and 64 that can tilt with the support pins 71 and 72 as fulcrums. Is converted into a pressing force that presses the locked portion 67 inward in the radial direction. Therefore, the locked portion 67 is clamped by the clamping portions 63b and 64b of the tilt members 63 and 64, and the support rotating body 62 and the locked portion 67 are locked in the rotation direction through the tilt members 63 and 64. In the present embodiment, the distance L2 between the fulcrum F and the action point A is set shorter than the distance L1 between the fulcrum F and the force point S (see FIG. 19). A force larger than the force obtained by subtracting the urging force to the tilting members 63 and 64 by the spring 68 from the pressing force to the tilting members 63 and 64 by the bodies 65 and 66 is applied to the locked portion 67 from the holding portions 63b and 64b. Added to.

  In this way, when the locked portion 67 is clamped by the clamping portions 63b and 64b of the tilt members 63 and 64, the tilt members 63 and 64 and the locked portion 67 are drivingly connected (locked in the rotation direction). As a result, it can rotate integrally. Thus, also in the present embodiment, the rotational force of the rotary shaft 10 driven by the motor main body 2 is transmitted to the worm shaft 22 and the output shaft 23a via the tilt members 63 and 64, and the slide door 52 is It opens and closes automatically by driving (see FIG. 21).

  When the driving of the motor body 2 is stopped, the centrifugal force accompanying the rotation of the rotary shaft 10 does not act, so that the radial direction of the one end portion of the tilting members 63 and 64 by the spring 68 as shown in FIG. By the urging inward, the one end portions of the tilt members 63 and 64 are moved toward the inner peripheral side along the radial direction. Therefore, the tilting members 63 and 64 are tilted to a position where the tilting main body portions 63a and 64a are parallel to the rotation shaft 10, and the contact portions 63c and 64c and the locked portion 67 are brought into a non-contact state. That is, the tilting members 63 and 64 return to a position where they cannot be locked with the locked portion 67 in the rotation direction. At the same time, the urging force radially inward of the spring 68 is transmitted to the weights 65 and 66 through the one end portions of the tilting main body parts 63a and 64a, and the weights 65 and 66 are placed in the holding recesses 81a and 81b. Be contained.

Next, characteristic actions and effects of the present embodiment will be described.
(1) In the clutch 61 of the present embodiment, when the support rotator 62 rotates with the rotation of the rotary shaft 10 driven by the motor body 2, the tilt members 63 and 64 receive the rotational force of the support rotator 62. Rotate. Further, the weights 65 and 66 rotate around the rotation shaft 10 as the rotation shaft 10 rotates, and the weights 65 and 66 are subjected to the urging force of the spring 68 by the action of the centrifugal force accompanying the rotation. It opposes and moves to an outer peripheral side, and presses one end part (end part on the opposite side to clamping part 63b, 64b across support pins 71, 72) of the tilting members 63, 64 radially outward. In the clutch 61, the support rotating body 62 and the locked portion 67 are drivingly connected (rotated) through the tilting members 63 and 64 tilted about the support pins 71 and 72 by the pressing force from the weights 65 and 66. Act to lock in the direction). That is, the clutch 61 connects the rotating shaft 10 of the motor main body 2 and the worm shaft 22 of the speed reducing unit 3 so as to rotate integrally by driving the motor main body 2, so that the slide door 52 is operated by driving the motor main body 2. It is possible to make it. On the other hand, when the motor main body 2 is not driven, the clutch 61 is disposed at a position where the tilting members 63 and 64 cannot be locked with the locked portion 67 in the rotation direction by the biasing force of the spring 68. The stop portion 67 is disconnected from the support rotating body 62. That is, the clutch 61 is one of the operating loads when the slide door 52 is manually operated because the rotary shaft 10 and the worm shaft 22 are disconnected when the motor body 2 is not driven. It is not necessary to rotate the rotating shaft 10 of the motor body 2 from the load side, and the manual operation load can be reduced.

  Since the clutch 61 that operates in this manner is provided at a location where the torque between the rotating shaft 10 of the motor body 2 and the worm shaft 22 that is the input shaft of the speed reduction mechanism is small, the rigidity of the clutch components is made relatively low. It can be configured in a small size. That is, individual clutch components can be made smaller, and the clutch 61 can be reduced in size. In addition, since the clutch 61 is mechanical, no electrical wiring to the clutch 61 is necessary. Therefore, in the motor 1 using the clutch 61, the wiring space can be omitted and the size can be reduced. Moreover, since it is used for the sliding door opening and closing device 50 that is a vehicle mounting device that always requires a small mounting space as in this embodiment, the clutch 61 is downsized and the motor 1 is small. Is big. Moreover, since there is no power consumption in the clutch 61, the motor 1 can be made low power consumption.

  (2) In the tilt members 63 and 64 of the present embodiment, the distance between the fulcrum F and the action point A is set shorter than the distance L1 between the fulcrum F and the force point S. Therefore, a force larger than the force obtained by subtracting the urging force to the tilting members 63 and 64 by the spring 68 from the pressing force to the tilting members 63 and 64 by the weights 65 and 66 is locked from the holding portions 63b and 64b. Added to part 67. Accordingly, the holding force of the locked portion 67 by the tilting members 63 and 64 can be increased, and as a result, the rotational force of the rotary shaft 10 can be efficiently transmitted to the worm shaft 22.

  (3) The outer peripheral surface of the locked portion 67 is knurled, and the contact portions 63c and 64c that contact the locked portion 67 have a plurality of tooth portions 63d and 64d arranged in the circumferential direction, respectively. ing. Accordingly, the frictional force between the locked portion 67 and the contact portions 63c and 64c can be increased, and the rotational force of the rotary shaft 10 can be more efficiently applied to the worm shaft 22 via the tilt members 63 and 64. Can communicate.

  (4) When the motor main body 2 is driven, the tilting members 63 and 64 can be easily engaged with the locked portion 67 by simply tilting with the support pins 71 and 72 that are the connecting portions with the support rotating body 62 as fulcrums. It arrange | positions in the position which can be latched in a rotation direction. Therefore, the configuration of the clutch 61 of the present embodiment can be simplified.

The embodiment of the present invention may be modified as follows.
In the first and second embodiments, the clutches 24 and 24a such as the input side rotating body 31, the output side rotating bodies 32 and 41, the contact member 33, the plate support 34, the coil spring 35, and the plate members 37 and 42 are provided. You may change the shape of a structural member suitably. Further, the number of contact members 33 and coil springs 35 may be changed. Further, members such as the plate members 37 and 42 may be omitted.

  Further, the input side rotating body 31, the contact member 33, the plate support 34 and the plate members 37 and 42 are made of resin, and the output side rotating body 32 is made of metal. Alternatively, a metal material may be formed of a resin.

  In the first and second embodiments, the plate members 37 and 42 are fixed to the brush holder 7. However, if the plate members 37 and 42 are made of the same material as the brush holder 7, they can be integrally formed. Further, the plate members 37 and 42 may be fixed to the gear housing 21. In this case, if the plate members 37 and 42 are made of the same material as the gear housing 21, they can be integrally formed.

  In the third embodiment, the clutch 61 includes a pair (that is, two) of tilting members 63 and 64. However, the number of tilt members 63 and 64 provided in the clutch 61 may be three or more.

  In the third embodiment, the weights 65 and 66 are held by the holding body 81 fixed to the rotating shaft 10 so as to be movable in the radial direction. However, the weights 65 and 66 may be directly fixed to end portions on the opposite side to the sandwiching portions 63b and 64b of the tilting members 63 and 64 that face each other in the radial direction. In this way, the holding body 81 can be omitted, and the number of parts can be reduced. If the tilting members 63 and 64 can be used alone to tilt against the urging force of the spring 68 by the centrifugal force accompanying the rotation of the rotary shaft 10 when the motor body 2 is driven, the weights 65 and 66 are omitted. Also good. In this way, the number of parts can be further reduced.

  -In the said 3rd Embodiment, the contact parts 63c and 64c are provided with the tooth parts 63d and 64d respectively arranged in the circumferential direction. However, knurl processing may be applied to the contact portions 63c and 64c instead of the tooth portions 63d and 64d. A plurality of tooth portions arranged in the circumferential direction may be provided on the outer periphery of the locked portion 67.

  In the third embodiment, the weights 65 and 66 are disposed so as to face one end of the tilting members 63 and 64 (the end on the base end side of the rotating shaft 10). However, the configuration of the clutch 61 is not limited to this. For example, the weights are respectively fixed to the inner peripheral surfaces of the end portions on the worm shaft 22 side of the pair of tilting members disposed on the side of the rotating shaft 10, and the rotating shaft is more than the central portion in the axial direction of these tilting members. Each tilting member is connected to the support rotating body 62 via the support pins 71 and 72 so that the position closer to the base end portion of 10 becomes a fulcrum. In addition, a spring is disposed inside the pair of tilting members so as to urge one end (the end opposite to the weight body) of each tilting member toward the outer peripheral side. A cup-shaped locked portion is integrally provided at the end of the worm shaft 22 on the rotating shaft 10 side. The locked portion is disposed at a position where the inner peripheral surface of the cylindrical side wall of the locked portion and the other end portion (end portion on the weight side) of each tilting member are opposed to each other in the radial direction. The In the clutch configured as described above, when the weight body moves to the outer peripheral side against the urging force of the spring due to the centrifugal force accompanying the rotation of the rotating shaft 10, the support pins 71 and 72 are moved along with the movement of the weight body. As a fulcrum, the tilting member tilts, and the other end of each tilting member moves to the outer peripheral side along the radial direction. Then, the other end of each tilting member abuts against the inner peripheral surface of the side wall of the latched portion, and the tilting member and the latched portion are driven and connected (in the rotational direction) by the frictional force at the abutted portion. It can be rotated together. Even if it does in this way, the effect similar to (4) of the said 3rd Embodiment can be acquired.

In each of the above embodiments, the speed reduction mechanism is configured using the worm shaft 22 and the worm wheel 23, but the configuration of the speed reduction mechanism is not limited to this.
In each of the above embodiments, the present invention is applied to the motor 1 of the vehicle sliding door opening / closing device 50 for opening / closing the sliding door 52 that opens / closes the opening on the side of the vehicle. For example, you may apply to the motor of the back door opening / closing apparatus for vehicles for opening / closing the back door which opens and closes the opening of a vehicle rear part. In particular, a door that is opened and closed in the vertical direction even in the back door requires a relatively large operating force for manual opening and closing of the door, like the slide door 52 of the above embodiment. Therefore, the significance of reducing the rotational load of the output shaft 23a from the load side by the clutches 24, 24a as described above is significant, and the door can be easily manually opened and closed.

Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described below.
(A) In the clutch according to any one of claims 1 to 4,
While driving from the drive shaft side, the rotational force in both rotational directions is transmitted from the drive shaft to the driven shaft, while when the drive shaft is not driven, the driven shaft and the drive shaft are disconnected, and the driven shaft A clutch that operates to allow rotation in both rotational directions.

(B) In the motor according to any one of claims 5 to 9,
The clutch transmits a rotational force in both rotational directions from the rotary shaft to the input shaft of the speed reduction mechanism when the motor body is driven, while the input shaft of the speed reduction mechanism and the rotary shaft are not driven when the motor body is not driven. And a motor that operates to allow rotation of the input shaft of the speed reduction mechanism in both rotational directions.

  According to these clutches, both the drive shaft (rotary shaft) and the driven shaft (input shaft of the speed reduction mechanism) operate in any rotational direction, so that the adaptability to the device (motor) is high.

It is sectional drawing of the motor in 1st Embodiment. It is a perspective view which shows the clutch of 1st Embodiment. It is a disassembled perspective view which shows the clutch of 1st Embodiment. It is a figure for demonstrating operation | movement of the clutch of 1st Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a figure for demonstrating operation | movement of the clutch of 1st Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a figure for demonstrating operation | movement of the clutch of 1st Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a figure for demonstrating operation | movement of the clutch of 1st Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a figure for demonstrating operation | movement of the clutch of 1st Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a figure for demonstrating operation | movement of the clutch of 1st Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a perspective view which shows the clutch of 2nd Embodiment. It is a disassembled perspective view which shows the clutch of 2nd Embodiment. It is a figure for demonstrating operation | movement of the clutch of 2nd Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a figure for demonstrating operation | movement of the clutch of 2nd Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a figure for demonstrating operation | movement of the clutch of 2nd Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a figure for demonstrating operation | movement of the clutch of 2nd Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a figure for demonstrating operation | movement of the clutch of 2nd Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a figure for demonstrating operation | movement of the clutch of 2nd Embodiment, (a) is principal part sectional drawing of a clutch, (b) is a top view of the clutch seen from the rotating shaft side. It is a disassembled perspective view which shows the clutch of 3rd Embodiment. It is sectional drawing of the clutch of 3rd Embodiment. It is sectional drawing of the clutch of 3rd Embodiment. It is a schematic block diagram of the sliding door opening / closing apparatus for vehicles.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Motor, 2 ... Motor main body, 7 ... Brush holder as attached body, 8 ... Brush, 10 ... Rotating shaft as drive shaft, 21 ... Gear housing as attached body, 22 ... Drive shaft and reduction mechanism Worm shaft as an input shaft of the decelerating mechanism to be constructed, 23... Worm wheel constituting the decelerating mechanism, 24, 24a, 61... Clutch, 31 ... Input side rotating body as the first rotating body, 32. Output side rotating body, 33 ... contact member as connecting member, 34 ... plate support as holding member, 35 ... coil spring as urging member, 37 ... plate member as regulating guide member, 37b ... as guide portion , 50 ... A sliding door opening / closing device for a vehicle as a vehicle door opening / closing device, 51 ... A doorway as an opening, 52 ... A sliding door as a door, DESCRIPTION OF SYMBOLS 2 ... Supporting rotary body as a 1st rotary body, 63,64 ... Tilt member as a connection member, 67 ... Locked part as a 2nd rotary body, 63 ... Spring as a biasing member, 71, 72 ... Connection Support pins 71 and 72 as parts.

Claims (11)

Provided between a drive shaft and a driven shaft arranged coaxially with the drive shaft, and when driving from the drive shaft side, the drive shaft and the driven shaft are connected to generate a rotational force from the drive shaft. A clutch that transmits to the driven shaft side and operates to disconnect the driven shaft and the drive shaft when the drive shaft is not driven,
A first rotating body provided on the same axis so as to rotate integrally with the drive shaft;
A second rotating body provided coaxially so as to be rotatable integrally with the driven shaft;
Maintaining a state that can be locked with the first rotating body in the rotating direction, while maintaining a state that can be locked with the second rotating body in a rotating direction or a position that cannot be locked in the radial direction. A connecting member that is movable along the first rotating body and is moved to a position side that receives a rotational force from the rotating body as the first rotating body rotates and can be locked in the rotation direction with the second rotating body; ,
A clutch comprising: the second rotating body; and a biasing member that biases the connecting member on a position side that cannot be locked in the rotation direction. The clutch according to claim 1, wherein
Provided for a non-movable attached body, and having a guide portion that locks with the connecting member and guides the connecting member to a position side that can be locked with the second rotating body in the rotation direction. A clutch provided with a regulation guide member. The clutch according to claim 1 or 2,
A clutch comprising a holding member for holding the connecting member and the biasing member. The clutch according to claim 1, wherein
The connecting member is connected to the first rotating body and tiltable so that both end portions in the axial direction of the connecting member move along the radial direction with the connecting portion with the first rotating body as a fulcrum. When the drive shaft is rotated, the connecting portion is tilted about a fulcrum by a centrifugal force acting as the drive shaft rotates, so that the second rotary body can be locked in the rotation direction. A clutch characterized by being arranged. In a motor comprising a motor body and a speed reduction mechanism, provided between a rotation shaft rotated by driving the motor body and an input shaft of the speed reduction mechanism arranged coaxially with the rotation shaft, When the motor body is driven, the rotation shaft and the input shaft of the speed reduction mechanism are connected to transmit the rotational force from the rotation shaft to the speed reduction mechanism side, while when the motor body is not driven, the input shaft of the speed reduction mechanism And a clutch that operates to disconnect the rotating shaft,
The clutch is
A first rotating body provided coaxially so as to be integrally rotatable with the rotating shaft;
A second rotating body provided coaxially with the input shaft of the speed reduction mechanism so as to be integrally rotatable;
Maintaining a state that can be locked with the first rotating body in the rotating direction, while maintaining a state that can be locked with the second rotating body in a rotating direction or a position that cannot be locked in the radial direction. A connecting member that is movable along the first rotating body and is moved to a position side that receives a rotational force from the rotating body as the first rotating body rotates and can be locked in the rotation direction with the second rotating body; ,
A motor comprising: the second rotating body; and a biasing member that biases the connecting member on a position side that cannot be locked in the rotation direction. The motor according to claim 5, wherein
The clutch is provided with respect to a non-movable attached body, and guides the coupling member to a position side that can be latched with the second rotating body in a rotational direction by latching with the coupling member. A motor having a regulation guide member having the following. The motor according to claim 5 or 6,
The motor, wherein the clutch is provided with a holding member that holds the coupling member and the biasing member. The motor according to any one of claims 5 to 7,
A power supply provided in the motor body, including a regulation guide member having a guide portion that engages with the connection member of the clutch and guides the connection member to a position side that can be engaged with the second rotating body in the rotation direction. A motor fixed to or integrally formed with a brush holder for holding a brush for use, or fixed to or integrally formed with a gear housing for accommodating the speed reduction mechanism. The motor according to claim 5, wherein
The connecting member is connected to the first rotating body and tiltable so that both end portions in the axial direction of the connecting member move along the radial direction with the connecting portion with the first rotating body as a fulcrum. When the rotating shaft is rotated, the connecting portion is tilted with a fulcrum as a result of centrifugal force acting as the rotating shaft rotates, so that the rotating shaft can be locked in the rotational direction. A motor characterized by being arranged. A vehicle door configured to open and close a door that opens and closes an opening provided in a vehicle by using the motor with a clutch according to any one of claims 5 to 9 as a driving source thereof. A switchgear,
When a command to automatically open and close the door is generated, the motor main body is driven and the clutch connects the rotation shaft of the motor main body and the input shaft of the speed reduction mechanism to reduce the rotational force from the rotation shaft. When the motor main body is not driven, the clutch is disconnected from the input shaft of the speed reduction mechanism and the rotary shaft, and the operation load when the door is manually opened and closed is output. A door opening and closing device for a vehicle characterized by being in a reduced state. The vehicle door opening and closing device according to claim 10,
It is a vehicle sliding door opening / closing device for opening / closing a sliding door that opens / closes an opening of a vehicle side portion, or a vehicle back door opening / closing device for opening / closing a back door that opens / closes an opening of a vehicle rear portion. A vehicle door opening and closing device.

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