JP2007135387A - Motor and door operating appliance for vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a motor with a clutch reduced in size to construct a motor body in a reduced size. <P>SOLUTION: The clutch 24 provided in the motor 1 is arranged in a position having a small torque between the rotary shaft 10 of the motor body 2 and the worm shaft 22 of a speed reduction part 3, and connects the rotary shaft 10 to the worm shaft 22 to transmit the rotational force from the rotary shaft 10 to the worm shaft 22 in driving the motor body 2, and enables the operation of a slide door driven by the motor 1. On the other hand, when the motor body 2 is not driven, the clutch 24 disconnects the warm shaft 22 from the rotary shaft 10 to cut off the rotary shaft 10 being a rotary load of the output shaft 23a from a load side from the warm shaft 22, and enables an easy manual operation of the slide door. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a motor used as a drive source of a vehicle door opening / closing device such as a vehicle sliding door opening / closing device and a vehicle back door opening / closing device, and the vehicle door opening / 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, the motor disclosed in Patent Document 1 is configured such that driving is interrupted by an electromagnetic clutch between a worm wheel that is an output gear and a rotary shaft that is an output shaft. In the configuration in which the driving is intermittently performed by the clutch, it is necessary to secure rigidity or the like for receiving the torque in each component of the electromagnetic clutch. Therefore, there is a concern that the electromagnetic clutch becomes larger, and consequently the motor including the electromagnetic clutch becomes larger, and the mounting property on the vehicle is deteriorated.

  The present invention has been made to solve the above-described problems, and its purpose is to transmit the driving force of the motor body to the output shaft of the speed reducer in a motor in which the motor body and the speed reducer are assembled together. On the other hand, a clutch for reducing the rotational load of the output shaft from the load side is provided, the motor can be reduced in size and the motor size can be reduced, and the motor is used as a drive source. The object is to provide a vehicle door opening and closing device.

  In order to solve the above-mentioned problems, a first aspect of the present invention is directed to a motor body that rotationally drives a rotating shaft, a worm shaft that is integrally assembled to the motor body, and that transmits the rotational force of the rotating shaft; A speed reduction mechanism including a worm wheel meshed with the worm shaft, and a speed reduction unit for outputting a rotational force passing through the worm shaft and the worm wheel from an output shaft connected to rotate integrally with the worm wheel; The motor is provided between the rotating shaft and the worm shaft, and when the motor body is driven, the rotating shaft and the worm shaft are coupled to generate a rotational force from the rotating shaft. While being transmitted to the worm shaft, when the motor body is not driven, the worm shaft and the rotating shaft are disconnected to become a rotational load of the output shaft from the load side. Further comprising a clutch for disconnecting the shaft from the worm shaft and the gist thereof.

  According to this configuration, the clutch is provided between the rotating shaft of the motor main body and the worm shaft of the speed reduction unit, and when the motor main body is driven, the rotating shaft and the worm shaft are connected to rotate the rotating force from the rotating shaft. Is transmitted to the worm shaft, and the load is driven by the motor. On the other hand, when the motor main body is not driven, the clutch disconnects the worm shaft and the rotary shaft from the worm shaft and disconnects the rotary shaft that becomes the rotational load of the output shaft from the load side. Thereby, since the rotational load of the output shaft from the load side is reduced, rotation of the output shaft from the load side is facilitated, and for example, manual operation that does not depend on motor driving can be easily performed on the load side. . Since the clutch that operates in this manner is provided at a location where the torque between the rotating shaft of the motor main body and the worm shaft of the speed reducing portion 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.

The gist of the invention described in claim 2 is that, in the motor described in claim 1, the rotating shaft and the worm shaft are arranged coaxially.
According to this configuration, since the rotating shaft and the worm shaft are coaxially arranged, the two shafts can be easily connected and stable rotation transmission can be performed.

The invention according to claim 3 is the motor according to claim 1 or 2, wherein the thrust load of the worm shaft is received by a thrust receiving ball.
According to this configuration, since the thrust load of the worm shaft can be received using the thrust receiving ball, the rotational load of the worm shaft is reduced, which can contribute to the reduction of the rotational load of the output shaft from the load side.

The gist of the invention described in claim 4 is the motor according to any one of claims 1 to 3, wherein the clutch is an electromagnetic clutch.
According to this configuration, since the electromagnetic clutch is used, it is possible to easily connect and disconnect the rotating shaft and the worm shaft as compared with the mechanical clutch.

  According to a fifth aspect of the present invention, in the motor according to the fourth aspect, the electromagnetic clutch connects the rotary shaft and the worm shaft during excitation, and the worm shaft and the rotary shaft during non-excitation. It is the gist that it is configured so as to cut off.

  According to this configuration, the electromagnetic clutch connects the rotating shaft and the worm shaft when excited, and disconnects the worm shaft and the rotating shaft when not excited. In other words, since the clutch is de-energized when the motor body that does not operate the load is not driven, when the motor body is not driven and power is not consumed by the motor body, the power is not consumed by the clutch as well. Can do.

  According to a sixth aspect of the present invention, in the motor according to the fourth or fifth aspect, the clutch is interposed between the worm shaft and the rotating shaft, and disconnects the worm shaft and the rotating shaft. A connecting member made of a magnetic material disposed at a second position that connects the rotating shaft and the worm shaft, and the connecting member is one of the first and second positions. And an electromagnet that magnetically attracts the connecting member by excitation so as to be disposed at one of the first and second positions against the urging force of the urging member. The gist is to comprise.

  According to this configuration, the connecting member is disposed at one of the first position where the worm shaft and the rotating shaft are disconnected by the biasing member, and the second position where the rotating shaft and the worm shaft are connected, and the electromagnet. The coupling member is arranged at the other position by the excitation of. In other words, the clutch that connects and disconnects the rotating shaft and the worm shaft as described above can be realized with a simple configuration using the connecting member, the urging member, and the electromagnet.

  A seventh aspect of the present invention uses the motor with a clutch according to any one of the first to sixth aspects as a drive source, and an output shaft driven by the motor is used as a door that opens and closes an opening provided in the vehicle. The vehicle door opening and closing device is configured to open and close in accordance with the rotation of the motor. When a command to automatically open and close the door is generated, the motor body is driven and the motor body is rotated by the clutch. A shaft and a worm shaft of the speed reduction unit are connected to transmit the rotational force from the rotating shaft to the output shaft via the worm shaft and the worm wheel, and the door is opened and closed by the rotation of the output shaft. On the other hand, when the motor body is not driven, the worm shaft and the rotating shaft are disconnected by the clutch, and the rotating shaft that becomes the rotating load of the output shaft from the load side is The gist is that the rotational force of the output shaft from the load side by manual opening and closing of the door is transmitted to the worm wheel and the worm shaft and is not transmitted to the rotational shaft. To do.

  According to this configuration, in a device that automatically opens and closes a door of a vehicle by a motor drive, there is a demand for the door to be able to be manually opened and closed. It is suitable as. Moreover, since it is always required to reduce the mounting space in an apparatus mounted on a vehicle, it is significant to make the clutch smaller and the motor smaller.

  The invention according to claim 8 is the vehicle door opening and closing device according to claim 7, wherein the vehicle sliding door opening and closing device for opening and closing the sliding door for opening and closing the opening of the vehicle side portion or the vehicle rear portion 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 rotational load of the output shaft from the load side by the clutch as described above is significant, and it is easy to manually open and close the door.

  Thus, according to the present invention, it is possible to reduce the size of the clutch, to provide a motor with a small physique, and to provide a vehicle door opening / closing device using such a motor as a drive source.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings.
FIG. 1 shows a motor 1 of the present embodiment. As shown in FIG. 3, 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.

  An electromagnetic clutch 24 for connecting / disconnecting the worm shaft 22 and the rotary shaft 10 is housed in the clutch housing recess 21d. As shown in FIG. 2, the clutch 24 includes an electromagnet 31, a connecting member 32, and a return spring 33.

  The electromagnet 31 has an annular shape and is fixed to the clutch housing recess 21d. An insertion hole 31a is provided inside the electromagnet 31, and the proximal end portion of the worm shaft 22 is inserted into the insertion hole 31a. In this case, the base end face of the worm shaft 22 is located slightly on the back side from the opening on the motor body 2 side in the insertion hole 31a.

  Here, the base end portion of the worm shaft 22 is provided with a spring accommodating recess 22b that is recessed in the axial direction from the end surface, and a coiled return spring 33 is accommodated in the spring accommodating recess 22b. The spring accommodating recess 22b is set to a depth at which the entire spring 33 is accommodated when the return spring 33 contracts and the spring 33 protrudes when the return spring 33 extends. Further, a slit-like connecting recess 22c is formed at the bottom of the spring accommodating recess 22b. Similarly, a slit-like connecting recess 10 a is formed at the tip of the rotating shaft 10.

  The connecting member 32 is made of a magnetic (metal) material, and is configured to be magnetically attracted by the electromagnet 31. The connecting member 32 includes a cylindrical main body portion 32a having substantially the same diameter as the base end portion of the worm shaft 22, a connecting convex portion 32b formed on the end surface of the main body portion 32a on the worm shaft 22 side, and the main body portion 32a. And a connecting convex portion 32c formed on the end surface of the rotating shaft 10 side. The connection convex part 32b has a rectangular parallelepiped shape that can be inserted into the connection concave part 22c at the base end of the worm shaft 22. The connecting convex portion 32b is movable in the axial direction with respect to the connecting concave portion 22c, and engages in the rotational direction when fitted to each other, and connects the connecting member 32 and the worm shaft 22 so as to rotate together. In addition, the front-end | tip of the connection convex part 32b is formed in the taper shape. In addition, the connecting convex portion 32c has a rectangular parallelepiped shape that can be inserted into the connecting concave portion 10a at the tip of the rotating shaft 10. The connecting convex portion 32c is movable in the axial direction with respect to the connecting concave portion 10a, and engages in the rotational direction when fitted to each other so as to connect the connecting member 32 and the rotary shaft 10 so as to rotate integrally.

  The return spring 33 is attached to the spring accommodating recess 22 b at the base end of the worm shaft 22, and is disposed between the worm shaft 22 and the main body portion 32 a of the connecting member 32. The return spring 33 presses the connecting member 32 toward the rotating shaft 10 by its urging force.

  In the clutch 24 having such a configuration, when the electromagnet 31 is de-energized (off), the connecting member 32 is pressed toward the rotating shaft 10 by the urging force of the return spring 33, and the main body portion 32 a of the connecting member 32 is pressed. The end surface on the rotating shaft 10 side is disposed at a first position P1 where the end surface of the rotating shaft 10 contacts the end surface (see FIG. 2A). In this case, the connecting convex portion 32c on the rotating shaft 10 side is in a state of being inserted into the connecting concave portion 10a at the tip of the rotating shaft 10, and the connecting member 32 and the rotating shaft 10 are connected to rotate integrally. .

  Further, since the connecting member 32 is disposed at the first position P1, the end surface on the worm shaft 22 side of the main body portion 32a of the connecting member 32 is substantially flush with the end surface on the rotating shaft 10 side of the electromagnet 31. The connecting projection 32b on the shaft 22 side is in a state of being disengaged from the connecting recess 22c at the base end of the worm shaft 22. That is, the connecting member 32 and the worm shaft 22 are disengaged (not connected), and the rotating shaft 10 and the worm shaft 22 are disconnected.

  On the other hand, when the electromagnet 31 is excited (turned on), the connecting member 32 is attracted to the worm shaft 22 side against the urging force of the return spring 33, and the main body portion 32a of the connecting member 32 is on the worm shaft 22 side. The end face is disposed at the second position P2 where the end face comes into contact with the base end face of the worm shaft 22 (see FIG. 2B). In this case, the end surface on the rotating shaft 10 side of the main body portion 32 a of the connecting member 32 is separated from the end surface of the rotating shaft 10, and the connecting convex portion 32 c on the rotating shaft 10 side is disengaged from the connecting recess 10 a on the leading end of the rotating shaft 10. However, the connection state between the connection protrusion 32c and the connection recess 10a is still maintained. That is, even if the connecting member 32 moves between the first and second positions P1 and P2, the connecting state of the connecting member 32 and the rotary shaft 10 is always maintained.

  Further, the connecting protrusion 32b on the worm shaft 22 side of the connecting member 32 is inserted into the connecting recess 22c at the base end of the worm shaft 22 by arranging the connecting member 32 at the second position P2. As a result, the connecting member 32 and the worm shaft 22 are connected so as to rotate integrally, that is, the worm shaft 22 and the rotary shaft 10 are connected via the connecting member 32 so as to rotate integrally.

  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 and close the slide door 52 is generated, the electromagnetic clutch 24 is turned on prior to the rotational drive of the motor body 2. Then, the motor body 2 is driven to rotate. When the clutch 24 is turned on, the rotary shaft 10 and the worm shaft 22 of the motor main body 2 are connected so as to rotate integrally, so that the rotation of the rotary shaft 10 due to the rotational drive of the motor main body 2 is connected via the connecting member 32 to the worm shaft 22. The worm shaft 22 is rotated. 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, since the clutch 24 is turned off, the connecting member 32 and the worm shaft 22 are disconnected. 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) The clutch 24 of the present embodiment is provided between the rotating shaft 10 of the motor main body 2 and the worm shaft 22 of the speed reduction unit 3. When the motor main body 2 is driven, the rotating shaft 10 and the worm shaft 22 Are connected to transmit the rotational force from the rotary shaft 10 to the worm shaft 22 so that the sliding door 52 can be opened and closed by driving the motor 1. On the other hand, when the motor body 2 is not driven, the clutch 24 disconnects the worm shaft 22 and the rotary shaft 10 from the worm shaft 22 and disconnects the rotary shaft 10 that becomes the rotational load of the output shaft 23a from the load side. Thereby, since the rotational load of the output shaft 23a from the load side is reduced, 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 enabled. 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 main body 2 and the worm shaft 22 of the speed reducing unit 3 is small, the clutch interposed between the rotating shaft 10 and the worm shaft 22. The rigidity of the connecting member 32, which is one of the component parts, can be reduced to a relatively small size. Accordingly, the electromagnet 31 that magnetically attracts the connecting member 32 and the spring 33 that applies an urging force to the connecting member 32 can be configured in a small size. Thereby, the clutch 24 can be reduced in size and the motor 1 can be comprised in a small physique. 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.

(2) In the present embodiment, since the rotating shaft 10 and the worm shaft 22 are coaxially arranged, the shafts 10 and 22 can be easily connected and stable rotation transmission can be performed.
(3) 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.

  (4) Since the clutch 24 of the present embodiment is an electromagnetic type, it is possible to easily connect and disconnect the rotating shaft 10 and the worm shaft 22 as compared with a mechanical clutch. In addition, the clutch 24 of the present embodiment connects the rotary shaft 10 and the worm shaft 22 when excited, and disconnects the worm shaft 22 and the rotary shaft 10 when not excited. That is, since the clutch 24 is de-energized when the motor body 2 is not driven to open / close the slide door 52, when the motor body 2 is not driven and power is not consumed by the motor body 2, the clutch 24 similarly It is possible to prevent power consumption. Therefore, when applied to a device mounted on a vehicle as in the present embodiment, unnecessary battery consumption when the engine is stopped in the motor 1 can be prevented.

  (5) In the clutch 24 of the present embodiment, the connecting member 32 is disposed at the first position P1 where the worm shaft 22 and the rotating shaft 10 are disconnected by the spring 33, and the connecting member 32 is rotated by the excitation of the electromagnet 31. 10 and the worm shaft 22 are arranged at a second position P2 connecting them. That is, the clutch 24 that performs the intermittent connection between the rotary shaft 10 and the worm shaft 22 can have a simple configuration using the connecting member 32, the spring 33, and the electromagnet 31.

The embodiment of the present invention may be modified as follows.
In the above embodiment, the rotary shaft 10 and the worm shaft 22 are arranged coaxially via the clutch 24 (connection member 32), but the configuration of the clutch where the rotary shaft 10 and the worm shaft 22 are not arranged coaxially. It is good.

  -In above-mentioned embodiment, although the clutch 24 was comprised with the electromagnet 31, the connection member 32, and the return spring 33, the structure of a clutch is not limited to this, You may change suitably.

  Further, instead of such an electromagnetic clutch 24, a mechanical clutch may be substituted. If a mechanical clutch is used, the power consumption in the clutch can be reduced to zero, and there is no need to consider the wiring arrangement for supplying power to the clutch. Hereinafter, specific configuration examples (configurations A to E) of the mechanical clutch are shown.

[Configuration A]
The clutch 100 having the configuration A shown in FIGS. 4 and 5 includes an input-side rotating body 101 provided on the rotating shaft 10 side, an output-side rotating body 102 provided on the worm shaft 22 side, and both rotating bodies 101 and 102. And a contact member 103 provided.

  The input-side rotating body 101 is made of, for example, resin, and has a substantially cylindrical shaft portion 101a, a connection hole 101b that is provided at the base end portion of the shaft portion 101a and is connected to the rotation shaft 10 coaxially, A drive disc portion 101c having a plate shape in the radial direction is provided at the tip of the shaft portion 101a. The connecting hole 101b of the shaft portion 101a 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 101 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 101b.

  A driving disc 101c that is coaxial with the shaft 101a is provided at the tip of the shaft 101a. The drive disc portion 101c has a substantially triangular shape as a whole, and three engaging portions 101d having the same triangular shape, which are individually triangular, are provided at equal intervals (120 ° intervals) in the circumferential direction. Each engagement portion 101d has a curved shape in which each side is slightly bulged outward. On the other hand, a recessed portion 101e that is recessed radially inward is formed between the engaging portions 101d. Incidentally, each recessed part 101e is similarly provided in the circumferential direction at equal intervals (120 degree intervals).

  The output-side rotating body 102 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 102 is provided with a receiving recess 102a that is recessed on the input-side rotator 101 side and receives the drive disk portion 101c of the input-side rotator 101. A worm shaft is provided around the receiving recess 102a. An outer ring portion 102b that is coaxial with the drive disk portion 101c of the input side rotator 101 is formed. On the inner peripheral side of the outer ring portion 102b, twelve connecting concave portions 102c having the same shape and opened to the radially inner side and the input side rotating body 101 side are formed at equal intervals. Each connecting recess 102c has a trapezoidal shape that expands toward the radially inner side. When the drive disc portion 101c of the input-side rotator 101 is disposed in the accommodation recess 102a, the outer ring portion 102b having the connection recess 102c and the drive disc portion 101c are disposed on the same plane.

  The contact member 103 is formed of, for example, resin, and three contact members 103 are used for the clutch 100. The contact member 103 includes a main body portion 103a having a substantially rectangular parallelepiped shape, a connecting convex portion 103b erected in a cylindrical shape from one side surface of the main body portion 103a, and a surface of the main body portion 103a opposite to the connecting convex portion 103b. And a locking projection 103c erected in a substantially pentagonal prism shape. The contact members 103 are arranged at equal intervals (120 ° intervals) in the circumferential direction with respect to the plate support 104 arranged so as to cover the output side rotating body 102 and the drive disk portion 101c of the input side rotating body 101. Each is attached so as to be movable in the radial direction.

  Incidentally, the plate support 104 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 (not shown) is provided on the gear housing 21. And is rotatably supported. The plate support 104 is formed with an insertion hole 104a having a circular cross section through which the shaft 101a of the input side rotating body 101 is inserted at the center of the end surface on the rotation shaft side, and penetrates from the insertion hole 104a to the end surface on the worm shaft side. A housing hole 104b having a circular cross section is formed. The accommodation hole 104b accommodates the output side rotating body 102 of the worm shaft 22 (see FIG. 6A).

  On the end surface of the plate support 104 on the rotating shaft side, three receiving grooves 104c are formed around the insertion holes 104a at equal intervals (120 ° intervals) so as to extend in the radial direction from the insertion holes 104a. Each receiving groove 104c has a quadrangular cross section corresponding to the main body 103a of the contact member 103, and the radially outer edge is closed. Each housing groove 104c can accommodate the main body portion 103a of the contact member 103 from the axial direction, and the main body portion 103a can move in the radial direction along the housing groove 104c (moves in the circumferential direction). Impossible). In this case, the connecting convex portion 103b of each contact member 103 is disposed in the accommodating concave portion 102a (outer ring portion 102b) of the output-side rotating body 102 accommodated in the accommodating hole 104b of the plate support 104, and is input to the outer ring portion 102b. It arrange | positions in the clearance gap between the drive disc part 101c of the side rotary body 101. FIG.

  In addition, the coil spring 105 is accommodated in each accommodating groove 104 c of the plate support 104 on the radially outer side of the main body 103 a of the contact member 103. Each coil spring 105 urges the main body 103a of each contact member 103 radially inward. Then, after the contact member 103 and the coil spring 105 are accommodated in each accommodation groove 104 c, a disc-like lid body 106 is fixed to the plate support 104, and the accommodation groove 104 c is closed by the lid body 106. The lid body 106 is formed with a circular insertion hole 106a corresponding to the insertion hole 104a of the plate support 104 at the center, and the locking projection 103c of each contact member 103 is provided with the lid body 106. A notch groove 106b is formed so as to extend radially outward from the insertion hole 106a at the center. Each notch groove 106b is a plate support so as not to prevent the movement of each locking projection 103c protruding toward the rotary shaft 10 when the contact member 103 moves in the radial direction along the housing groove 104c of the main body 103a. It is formed corresponding to each accommodating groove 104 c of 104.

  The front end portion of each locking projection 103 c protruding from the lid body 106 can be locked with the outer peripheral surface of a substantially hexagonal plate-like plate member 107 disposed to face the lid body 106. Each locking projection 103c has a pentagonal prism shape, and locks with the outer peripheral surface of the plate member 107 at the radially inner corner. The plate member 107 is made of, for example, resin, and is fixed to the brush holder 7 with a screw or the like so as not to move. The plate member 107 can be integrally formed with the brush holder 7. A circular insertion hole 107a corresponding to the insertion hole 104a of the plate support 104 is formed in the central portion of the plate member 107, and the outer peripheral edge has a radial direction in the middle portion of each portion corresponding to six sides. Concave portions 107b that are slightly recessed in a V shape toward the inside are provided. That is, each corner portion 107c of the outer edge portion of the plate member 107 slightly protrudes radially outward.

  And if the connection convex part 103b of each contact member 103 is arrange | positioned in the innermost part of each recessed part 101e of the drive disc part 101c, or its vicinity and arrange | positions radially inside (refer FIG. 6), each connection convex The portion 103b is arranged at a position where it cannot be locked with the outer ring portion 102b of the output side rotating body 102. In this case, the output side rotating body 102 and the input side rotating body 101 are disconnected. At this time, the locking projections 103 c of the contact members 103 receive the urging force of the coil spring 105 and come into contact with the concave portions 107 b of the plate member 107 to be locked in the circumferential direction. Is in a state (locked state) in which the rotation of the plate support 104 to which is attached is suppressed.

  On the other hand, the connection convex portion 103b of each contact member 103 is moved radially outward along the side surface of each engagement portion 101d of the drive disk portion 101c by the rotation of the input side rotation body 101, and the output side rotation body 102 is rotated. When arranged in the coupling recess 102c of the outer ring portion 102b, each coupling projection 103b is engaged with the outer ring portion 102b in the rotational direction against the urging force of the coil spring 105 (FIG. 11, etc.). reference). In this case, the output-side rotator 102 and the input-side rotator 101 are drivingly connected via the respective contact members 103 (connection convex portions 103b). Further, at this time, due to the movement of each contact member 103 outward in the radial direction, the locking projection 103c of each contact member 103 moves to the outside of each corner 107c of the plate member 107 and is separated, so that the locking The projecting portion 103c cannot be locked to the plate member 107. Thereby, the rotation restrained state of the plate support 104 is canceled, and the plate support 104 to which each contact member 103 is attached is rotated based on the rotation of the input side rotating body 101, and the connecting convex portion 103b of each contact member 103 is rotated. The output-side rotating body 102 that is locked in the circumferential direction rotates.

  Then, the dimensions of the contact members 103, the outer ring portion 102b of the output side rotating body 102, the drive disk portion 101c of the input side rotating body 101, etc. are set so that such an operation is performed smoothly. Yes.

  In the clutch 100 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 105 urges the contact member 103 radially inward, As shown in FIG. 6, the connecting convex portion 103 b of each contact member 103 is guided to the innermost side of each concave portion 101 e of the drive disk portion 101 c in the input side rotating body 101, and the engagement of each contact member 103. The stop convex portion 103 c is guided to the innermost side of each concave portion 107 b of the plate member 107.

  It should be noted that the connecting projection 103b of each contact member 103 is located at the innermost portion of each recess 101e of the drive disc 101c and the locking projection 103c is each recess of the plate member 107 only by the urging force of the coil spring 105. When the worm shaft 22 is rotated from the load side and the outer ring portion 102b of the output side rotating body 102 rotates when the worm shaft 22 is not guided to the innermost part of the 107b, the position is corrected by the collision of each connecting projection 103b against the outer ring portion 102b. Then, it is guided to the innermost side of each recessed portion 101e of the drive disc portion 101c. Further, due to the impact of the outer ring portion 102 b on the respective connecting convex portions 103 b, the respective engaging convex portions 103 c are guided to the innermost side of the respective concave portions 107 b of the plate member 107.

  And if the connection convex part 103b of each contact member 103 is arrange | positioned in the innermost part of each recessed part 101e of the drive disc part 101c, or its vicinity, each connection convex part 103b will be the outer ring | wheel part 102b of the output side rotary body 102. 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 contact protrusions 103 c of the contact members 103 are arranged in the concave portions 107 b of the plate member 107, so that the contact members 103 are locked to the plate member 107 in the circumferential direction. Since the plate member 107 is immovable, the rotation of the plate support 104 to which each contact member 103 is attached is suppressed, and the output side rotating body 102 (outer ring portion 102b) 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 101 rotates together with the rotating shaft 10. Then, as shown in FIG. 7, the rotation of the driving disc portion 101c guides the connecting convex portion 103b of each contact member 103 on the side surface of each engaging portion 101d of the driving disc portion 101c and pushes it outward in the radial direction. Thus, each contact member 103 moves radially outward against the urging force of the coil spring 105.

  At this time, the connection support 103b of each contact member 103 receives the rotational force from the drive disc 101c, so that the plate support 104 also rotates in the same direction. Then, the locking projection 103c of each contact member 103 is guided by the slope of the concave portion 107b of the plate member 107, and the movement of each contact member 103 to the outside in the radial direction is assisted. The movement is smooth. And the connection convex part 103b of the contact member 103 moved to radial direction goes into the connection recessed part 102c provided in the outer ring | wheel part 102b of the output side rotary body 102. FIG.

  When the drive disk portion 101c of the input side rotating body 101 further rotates, the connecting convex portion 103b of each contact member 103 is rotated with the side surface of the connecting concave portion 102c of the outer ring portion 102b of the output side rotating body 102 as shown in FIG. Engage with. Then, as shown in FIG. 9, the connection-side convex portion 103b of each contact member 103 is guided to the side surface of each engaging portion 101d of the drive disc portion 101c by further rotation of the input side rotating body 101, and As shown in FIG. 10, the contact protrusions 103c are further moved in the radial direction by the stop protrusions 103c being guided by the slopes of the concave portions 107b of the plate member 107, and the connection protrusions 103b are connected to the outer ring portions 102b. It fits deeply into the connecting recess 102c.

  And as shown in FIG. 11, the connection convex part 103b of each contact member 103 is arrange | positioned in the outer ring part 102b at the outermost state in the engagement state in the rotation direction, and the outer ring part 102b from the input side rotary body 101 is set. While the rotational force is transmitted, the locking projection 103c of each contact member 103 is disengaged from the outer peripheral surface of the plate member 107, so that the plate support 104 rotates smoothly. Incidentally, the operations of FIGS. 7 to 11 are the same in any rotation direction.

  Thus, the rotational force of the rotary shaft 10 driven by the motor body 2 is transmitted from the input-side rotary body 101 to the outer ring portion 102b of the output-side rotary body 102 via the connecting convex portion 103b of each contact member 103, 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.

[Configuration B]
The clutch 110 having the configuration B shown in FIGS. 12 and 13 is different from the clutch 100 having the configuration A in that a part of the output-side rotating body 111 and a part of the plate member 112 are changed. The constituent members have the same shape.

  The output-side rotator 111 has the same housing recess 111a and outer ring portion 111b as described above, and is composed of six connecting recesses 111c provided in the outer ring portion 111b. That is, the number of connection recesses 111c in the configuration B is halved with respect to the number (12) of connection recesses 102c in the output side rotating body 102 in the configuration A. Similarly, each connection recess 111c has a trapezoidal shape that expands toward the radially inner side.

  Further, the plate member 112 has an insertion hole 112a similar to the above provided in the center portion, and the outer peripheral surface is wavy, that is, 18 concave portions 112b and convex portions 112c are alternately provided. That is, the number of the concave portions 112b and the convex portions 112c in the configuration B is three times that of the concave portions 107b and the corner portions 107c of the plate member 107 in the configuration A. The plate member 112 is fixed to or integrally formed with the brush holder 7.

  The clutch 110 configured as described above operates in substantially the same manner as the clutch 100 described above. That is, when no rotational driving force is generated in the rotary shaft 10 as in the case where the motor body 2 is not driven, each contact member 103 is urged radially inward by the coil spring 105 as shown in FIG. The connecting convex portion 103 b of the contact member 103 is disposed at a position where it cannot be locked with the outer ring portion 111 b of the output side rotating body 111. 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 projection 103c of each contact member 103 is disposed in each concave portion 112b of the plate member 112, the rotation of the plate support 104 is suppressed, and the output side rotation that rotates when the slide door 52 is manually opened and closed. Along with the body 111 (outer ring portion 111b) is prevented. Since many concave portions 112b of the plate member 112 are provided in the circumferential direction, the locking convex portions 103c of the contact members 103 are easily fitted, and the engagement force in the rotational direction is large.

  On the other hand, when the motor body 2 is driven to automatically open and close the slide door 52 and the input-side rotating body 101 rotates together with the rotary shaft 10, as shown in FIG. 15, the drive disk portion 101c (each engaging portion 101d). As a result of this rotation, the connecting projection 103b of each contact member 103 is pushed radially outward against the biasing force of the coil spring 105.

  At this time, the connection support 103b of each contact member 103 receives a rotational force from the drive disc 101c, so that the plate support 104 also rotates in the same direction, and the locking protrusion 103c of each contact member 103 becomes the plate member 112. The contact members 103 are guided to the slopes of the concave portions 112b to assist the outward movement of the contact members 103 in the radial direction. And the connection convex part 103b of the contact member 103 moved to radial direction goes into the connection recessed part 111c provided in the outer ring | wheel part 111b of the output side rotary body 111. FIG.

  When the drive disk portion 101c of the input-side rotator 101 further rotates, as shown in FIGS. 16 to 18, the concave portion 112b of the plate member 112 is moved in the circumferential direction from the connecting recess 111c of the outer ring portion 111b of the output-side rotator 111. As shown in FIG. 19, the locking projection 103c of each contact member 103 is repeatedly entered several times, such as entering the concave portion 112b aligned in the rotational direction or overcoming the convex portion 112c. The connecting projection 103b of each contact member 103 engages with the side surface of the connecting recess 111c of the outer ring portion 111b in the rotational direction.

  Further, by the further rotation of the input-side rotator 101, the connecting convex portion 103b of each contact member 103 is guided to the side surface of each engaging portion 101d of the drive disc portion 101c and deeply enters the connecting concave portion 111c of the outer ring portion 111b. The engaging projection 103c of each contact member 103 is disengaged from the outer peripheral surface of the plate member 112, and the rotational force from the input side rotating body 101 is transmitted to the outer ring portion 111b. Thus, also in the present configuration B, the rotational force of the rotating shaft 10 driven by the motor body 2 is transmitted to the worm shaft 22 and the output shaft 23a side, and the sliding door 52 automatically opens and closes by driving the motor 1. Yes.

[Configuration C]
The clutch 120 having the configuration C shown in FIGS. 20 to 22 includes an input-side rotating body 121 provided on the rotating shaft 10 side, an output-side rotating body 122 provided on the worm shaft 22 side, and both rotating bodies 121 and 122. And a connecting plate 123 provided.

  The input-side rotator 121 is made of, for example, metal, and has a substantially cylindrical shaft portion 121a, a circular flange portion 121b provided at an intermediate portion in the axial direction of the shaft portion 121a, and an outer peripheral portion of the flange portion 121b. The outer ring portion 121c protrudes toward the connecting plate 123 (on the side opposite to the rotating shaft 10). A connecting hole 121d for connecting coaxially with the rotating shaft 10 is provided at the end of the shaft 121a on the rotating shaft 10 side. The connecting hole 121d is formed, for example, in a hole shape having a D-shaped cross section or a two-sided width (not shown) so as to rotate integrally with the rotating shaft 10 by insertion of the tip end portion of the rotating shaft 10. On the other hand, a fixing hole 121e for fixing a support pin 126 (described later) so as to be coaxial with the rotating shaft 10 is provided at the end of the shaft 121a on the output side rotating body 122 side.

  Here, the input side rotating body 121 is rotatably accommodated with respect to a base member 124 made of, for example, resin, and the base member 124 is fixed to or integrally formed with the brush holder 7. The base member 124 has an accommodation recess 124a having a circular cross section so as to rotatably accommodate the input-side rotator 121, and at the center of the bottom surface of the accommodation recess 124a, the input-side rotator 121 side of the rotary shaft 10 side. A bearing 125 that rotatably supports the shaft portion 121a is attached.

  The outer ring portion 121c of the input side rotating body 121 is provided with three recessed portions 121f that are recessed from the upper surface (the surface facing the connecting plate 123) at equal intervals (120 ° intervals) in the circumferential direction. Yes. Each recessed portion 121f has a trapezoidal shape that expands toward the output-side rotator 122 side. That is, both side surfaces of each recessed portion 121 f are inclined surfaces 121 g that are separated from each other toward the output side rotating body 122.

  A support pin 126 made of metal, for example, is fixed to the fixing hole 121 e of the input side rotating body 121 so as to be coaxial with the rotating body 121. The connecting plate 123 is inserted into the support pin 126 so as to be rotatable and movable in the axial direction. In addition, a coil spring 127 is inserted into the support pin 126 between the side surface of the output side rotating body 122 of the connecting plate 123 and a locking piece 126 a provided at the tip of the pin 126. The coil spring 127 biases the connecting plate 123 toward the input side rotating body 121 with the locking piece 126a of the support pin 126 as a fulcrum. In addition, a hemispherical contact convex portion 126 b that contacts the output-side rotating body 122 is provided at the center of the end surface of the support pin 126. The support pin 126 may be formed integrally with the input side rotating body 121 (rotating shaft 10), for example, or may be formed integrally with the output side rotating body 122 (worm shaft 22).

  The connection plate 123 is made of metal, for example, and has a diameter slightly larger than that of the input side rotating body 121. The connection plate 123 has a support pin 126 inserted through an insertion hole 123 a provided in the center, and is supported so as to be rotatable and axially movable with respect to the pin 126, that is, to be able to contact with and separate from the output-side rotator 122. .

  On the surface on the input side rotating body 121 side of the connecting plate 123, three hemispherical connecting convex portions 123 b are provided on the circumference facing the outer ring portion 121 c (concave portion 121 f) provided on the rotating body 121. It is provided at equal intervals (120 ° intervals) in the circumferential direction. Each connection convex part 123b is arrange | positioned in each recessed part 121f of the input side rotary body 121. As shown in FIG. Incidentally, the connecting plate 123 moves along the support pin 126 between the two rotating bodies 121 and 122, but each connecting convex portion 123 b has each connecting plate 123, regardless of whether the connecting plate 123 is positioned between the rotating bodies 121 and 122. It arrange | positions in the recessed part 121f. That is, the connection plate 123 can be engaged with the input-side rotator 121 in the rotation direction at each connection projection 123b regardless of its axial position.

  In addition, on the same surface of the connecting plate 123, three locking protrusions are provided on the same circumference, radially outside the connecting protrusions 123b, in this case, radially outside the outer edge of the input-side rotating body 121. The portions 123c are provided at equal intervals (120 ° intervals) in the circumferential direction. Each locking projection 123c is a projection that is sufficiently smaller than the coupling projection 123b, and faces the opening periphery of the accommodation recess 124a of the base member 124. On the periphery of the opening of the housing recess 124a of the base member 124, three locking recesses 124b provided on the same circumference as the locking protrusions 123c and into which the locking protrusions 123c can be inserted are equally spaced (120 °). (Interval).

  On the outer peripheral portion of the side surface of the output side rotating body 122 of the connecting plate 123, an annular connecting portion 123d that protrudes toward the rotating body 122 is provided. On the upper surface of the annular connecting portion 123d (the surface facing the output-side rotator 122), six engaging convex portions 123e that slightly protrude in a triangular shape are provided at equal intervals in the circumferential direction.

  The output-side rotator 122 is formed integrally with the base end portion of the shaft 22 so as to be coaxial with the worm shaft 22 with the same diameter as the connection plate 123 (even in a configuration in which the worm shaft 22 and the worm shaft 22 are coupled to each other) Yes, the worm shaft 22 is formed of, for example, metal. On the outer peripheral portion of the side surface of the connecting plate 123 of the output side rotating body 122, an annular connecting portion 122a protruding toward the plate 123 is provided. On the upper surface of the annular connecting portion 122a (the surface facing the connecting plate 123), six engaging convex portions 122b having the same shape as the engaging convex portions 123e of the connecting plate 123 are provided at equal intervals in the circumferential direction. Yes. Incidentally, in a state where the connecting plate 123 is in contact with the upper surface of the outer ring portion 121c of the input side rotating body 121, there is a gap such that the output side rotating body 122 and the connecting plate 123 are not connected (not engaged in the rotation direction). It is provided between the members.

  In the clutch 120 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, the coupling plate 123 is attached to the input side rotating body 121 side by the coil spring 127. As shown in FIG. 25, the connecting plate 123 comes into contact with the upper surface of the outer ring portion 121 c of the input side rotating body 121 by the force. In this case, each connecting projection 123 b of the connecting plate 123 is completely accommodated in the recessed portion 121 f of the input side rotating body 121, and each locking projection 123 c is completely in the locking recess 124 b of the base member 124. Is housed in.

  In addition, when each latching convex part 123c is not accommodated in the latching recessed part 124b of the base member 124, when the worm shaft 22 is rotated from the load side and the annular connecting part 122a of the output side rotating body 122 is rotated, When the connecting portion 122 a collides with the annular connecting portion 123 d of the connecting plate 123 and slightly rotates, each locking projection 123 c is accommodated in the locking recess 124 b of the base member 124.

  When the connecting plate 123 is in contact with the upper surface of the outer ring portion 121c of the input side rotating body 121 in this way, the connecting plate 123 and the output side rotating body 122 are not connected, so the worm shaft 22 and the rotating shaft 10 are not connected. Is cut off. In other words, since the rotary shaft 10 that becomes the rotational load of the output shaft 23a from the load side is disconnected from the worm shaft 22, the rotational load of the output shaft 23a from the load side is reduced, and therefore the output shaft 23a from the load side is reduced. Rotation is facilitated, and an easy opening / closing operation of the slide door 52 by manual operation is possible.

  Further, the engaging projections 123 c of the connecting plate 123 are disposed in the engaging recesses 124 b of the base member 124, so that the connecting plate 123 is engaged with the base member 124 in the circumferential direction. Since the base member 124 is immovable, the rotation of the connecting plate 123 is suppressed, and the accompanying rotation with the output side rotating body 122 (annular connecting portion 122a) that rotates when the sliding door 52 is manually opened and closed 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 121 rotates together with the rotating shaft 10 as shown in FIG. Then, each connection convex part 123b of the connection plate 123 contacts the inclined surface 121g of each concave part 121f of the rotary body 121 by the rotation of the input side rotary body 121.

  As the input-side rotating body 121 further rotates, the connecting plate 123 receives a rotational force. However, as shown in FIG. 23, each locking projection 123c is inserted into the locking recess 124b of the base member 124, so At the same time, the rotational force is changed by the inclined surface 121 g to the pressing force of the connecting plate 123 toward the output side rotating body 122, and the connecting plate 123 comes close to the output side rotating body 122. Along with this, each locking projection 123c of the connecting plate 123 also tends to be disengaged from the locking recess 124b of the base member 124.

  Then, as shown in FIG. 24, the annular coupling portion 123d of the coupling plate 123 and the annular coupling portion 122a of the output side rotating body 122 come into contact with each other and the engagement convex portions 123e and 122b are engaged with each other (connected state). Further, when each locking projection 123c of the connection plate 123 is completely removed from the locking recess 124b of the base member 124, the rotation of the connection plate 123 is allowed. Thereby, the rotation of the input side rotating body 121 is rotated while pressing the connecting plate 123 against the output side rotating body 122 by the inclined surface 121g of the recessed portion 121f of the connecting plate 123, and the rotation of the connecting plate 123 is the output side. It is transmitted to the rotator 122. Incidentally, the operations of FIGS. 22 to 24 are the same in any rotation direction.

  Thus, the rotational force of the rotary shaft 10 driven by the motor main body 2 is transmitted from the input side rotary body 121 to the output side rotary body 122 via the connecting plate 123, and the worm shaft 22 and the output shaft 23 a rotate, and the slide door 52. However, the motor 1 is automatically opened and closed by driving. Thereafter, when the driving of the motor body 2 is stopped, as shown in FIG. 25, the connection plate 123 is urged toward the input side rotating body 121 by the coil spring 127, and the connection plate 123 and the output side rotating body 122 are Is disconnected, and the worm shaft 22 and the rotary shaft 10 return to a disconnected state.

[Configuration D]
In the clutch 130 having the configuration D shown in FIGS. 26 and 27, a substantially cylindrical driving part 131 is attached to or integrally formed with the rotary shaft 10 so as to be integrally rotatable, and a slider having a substantially cylindrical shape is formed in the driving part 131. 132 is accommodated. The slider 132 is supported by the rotary shaft 10 and the drive unit 131 so as to be rotatable and movable in the axial direction, and is brought into contact with the distal end surface of the rotary shaft 10 by a spring 133, that is, a connection provided at the base end portion of the worm shaft 22. It is biased so as not to be connected to the convex portion 22x. Incidentally, the front end portion of the slider 132 is provided with a fitting connecting portion 132a that can be fitted to the connecting convex portion 22x of the worm shaft 22 and is fitted to rotate integrally with the connecting convex portion 22x.

  The slider 132 is provided with a pair of operating pins 134 so as to protrude from the outer peripheral surface thereof. Each operating pin 134 is inserted into an operating groove 131 a formed through the drive unit 131. The operating groove 131a has an inverted V shape in which the worm shaft 22 side is expanded (see FIG. 27). Here, when the slider 132 is in contact with the tip end surface of the rotating shaft 10 by the spring 133, the operating pin 134 of the slider 132 is disposed at the portion (V-shaped corner) closest to the rotating shaft 10 in the operating groove 131a. It has come to be.

  In the clutch 130 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, as shown in FIGS. 133, the operating pin 134 of the slider 132 is disposed at the corner of the V-shape of the operating groove 131a, and the slider 132 is in contact with the tip surface of the rotary shaft 10, that is, the slider 132 is not connected to the worm shaft 22. Thereby, since the worm shaft 22 and the rotary shaft 10 are disconnected, the output shaft 23a can be easily rotated from the load side, and an easy opening / closing operation of the slide door 52 can be performed manually.

  On the other hand, when the motor body 2 is driven to automatically open and close the slide door 52 and the drive unit 131 rotates together with the rotary shaft 10, as shown in FIGS. 26 (b) and 27 (b), the operation pin of the slider 132 is operated. 134 is guided by the operating groove 131a of the drive unit 131 and moves to the end of one of the grooves. Then, the slider 132 protrudes toward the worm shaft 22, and the fitting connection portion 132 a of the slider 132 is connected to the connection convex portion 22 x of the worm shaft 22. Further, when the operating pin 134 reaches the tip of one groove of the operating groove 131a, a rotational force is transmitted from the driving unit 131 to the slider 132 via the operating pin 134, and the rotational force is transmitted to the worm shaft 22. .

  Thus, the rotational force of the rotary shaft 10 driven by the motor body 2 is transmitted from the drive unit 131 to the worm shaft 22 and the output shaft 23a via the slider 132, so that the slide door 52 is automatically opened and closed by the drive of the motor 1. It comes to work. Thereafter, when the driving of the motor body 2 is stopped, the slider 132 is returned to the rotating shaft 10 side by the spring 133, the slider 132 and the worm shaft 22 are disconnected, and the worm shaft 22 and the rotating shaft 10 are disconnected. It returns to the state that was done.

[Configuration E]
In the clutch 140 having the configuration E shown in FIG. 28, a substantially cylindrical slider 141 is externally fitted to the tip end portion of the rotating shaft 10 so as not to rotate but to move in the axial direction. The surface is abutted, that is, biased so as not to be connected to the connecting convex portion 22x provided at the base end portion of the worm shaft 22. Incidentally, the front end portion of the slider 141 is provided with a fitting connection portion 141a that can be fitted to the connection convex portion 22x of the worm shaft 22 and is fitted to rotate integrally with the connection convex portion 22x.

  In addition, a pair of receiving recesses 10x that are recessed radially inward are provided on the outer peripheral surface near the tip of the rotating shaft 10, and a pair of drive pins 143 are housed in each receiving recess 10x so as to be movable in the radial direction. Has been. A slope 141b that is inclined outward in the radial direction toward the rotating shaft 10 side is provided at a portion of the inner wall surface of the slider 141 where the drive pins 143 are opposed in the radial direction.

  In the clutch 140 configured as described above, when no rotational driving force is generated on the rotary shaft 10 as in the case where the motor body 2 is not driven, the slider 141 is rotated by the spring 142 as shown in FIG. In contact with the tip surface of the shaft 10, that is, the slider 141 is not connected to the worm shaft 22. At this time, each drive pin 143 is disposed on the back side of each housing recess 10 x of the rotating shaft 10. Thereby, since the worm shaft 22 and the rotary shaft 10 are disconnected, the output shaft 23a can be easily rotated from the load side, and an easy opening / closing operation of the slide door 52 can be performed manually.

  On the other hand, when the motor body 2 is driven to automatically open and close the slide door 52 and the rotary shaft 10 rotates, as shown in FIG. 28B, each drive pin 143 protrudes radially outward by centrifugal force, The drive pin 143 presses the slope 141b. Then, the slider 141 protrudes toward the worm shaft 22, and the fitting connection portion 141 a of the slider 141 is connected to the connection convex portion 22 x of the worm shaft 22.

  Thus, the rotational force of the rotary shaft 10 driven by the motor body 2 is transmitted to the worm shaft 22 and the output shaft 23a via the slider 141, so that the slide door 52 automatically opens and closes by driving the motor 1. It has become. Thereafter, when the driving of the motor body 2 is stopped, the slider 141 is returned to the rotating shaft 10 side by the spring 142, the slider 141 and the worm shaft 22 are disconnected, and the worm shaft 22 and the rotating shaft 10 are disconnected. It returns to the state that was done.

  In the above embodiment, 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, but may be applied to the motor of other devices. For example, the present invention may be applied to a motor of a vehicle back door opening / closing device for opening and closing a back door that opens and closes an opening at the rear of the vehicle. 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, it is significant to reduce the rotational load of the output shaft 23a from the load side by the clutch 24 as described above, and the door can be easily opened and closed manually.

Next, technical ideas that can be grasped from the above-described embodiment and other examples will be described below.
(A) In the motor according to any one of claims 1 to 6,
As a drive source for a vehicle sliding door opening / closing device for opening / closing a sliding door for opening / closing a vehicle side opening or a vehicle back door opening / closing device for opening / closing a back door for opening / closing a vehicle rear opening A motor characterized by being used.

  In this way, in a device that automatically opens and closes a sliding door and a back door of a vehicle by driving a motor, there is a demand for the door to be able to be manually opened and closed. Is suitable as the drive source. Moreover, since it is always required to reduce the mounting space in an apparatus mounted on a vehicle, it is significant to make the clutch smaller and the motor smaller.

It is sectional drawing of the motor in this Embodiment. It is a figure for demonstrating the action | operation of an electromagnetic clutch, (a) shows the disconnection state of a worm shaft and a rotating shaft, (b) is a figure which shows the connection state of a rotating shaft and a worm shaft. It is a schematic block diagram of the slide door opening and closing apparatus which used the motor of this Embodiment as the drive source. It is a perspective view which shows the structure A of a mechanical clutch. It is a disassembled perspective view which shows the structure A of a mechanical clutch. It is a figure for demonstrating operation | movement of the structure A of a mechanical clutch, (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 structure A of a mechanical clutch, (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 structure A of a mechanical clutch, (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 structure A of a mechanical clutch, (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 structure A of a mechanical clutch, (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 structure A of a mechanical clutch, (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 structure B of a mechanical clutch. It is a disassembled perspective view which shows the structure B of a mechanical clutch. It is a figure for demonstrating operation | movement of the structure B of a mechanical clutch, (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 structure B of a mechanical clutch, (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 structure B of a mechanical clutch, (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 structure B of a mechanical clutch, (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 structure B of a mechanical clutch, (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 structure B of a mechanical clutch, (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 structure C of a mechanical clutch. It is a disassembled perspective view which shows the structure C of a mechanical clutch. It is a figure for demonstrating operation | movement of the structure C of a mechanical clutch, (a) is a side view of a clutch, (b) is a sectional side view of a clutch. It is a figure for demonstrating operation | movement of the structure C of a mechanical clutch, (a) is a side view of a clutch, (b) is a sectional side view of a clutch. It is a figure for demonstrating operation | movement of the structure C of a mechanical clutch, (a) is a side view of a clutch, (b) is a sectional side view of a clutch. It is a figure for demonstrating operation | movement of the structure C of a mechanical clutch, (a) is a side view of a clutch, (b) is a sectional side view of a clutch. It is a figure for demonstrating the structure D of a mechanical clutch, (a) is sectional drawing which shows the disconnection state of a worm shaft and a rotating shaft, (b) is a cross section which shows the connection state of a rotating shaft and a worm shaft. FIG. It is a figure for demonstrating the structure D of a mechanical clutch, (a) is a side view which shows the disconnection state of a worm shaft and a rotating shaft, (b) is a side view which shows the connection state of a rotating shaft and a worm shaft. FIG. 6C is a cross-sectional view showing a connection state between the worm shaft and the slider in FIG. It is a figure for demonstrating the structure E of a mechanical clutch, (a) shows the disconnection state of a worm shaft and a rotating shaft, (b) is a figure which shows the connection state of a rotating shaft and a worm shaft. .

Explanation of symbols

  DESCRIPTION OF SYMBOLS 2 ... Motor main body, 3 ... Reduction part, 10 ... Rotating shaft, 22 ... Worm shaft which comprises a reduction mechanism, 23 ... Worm wheel which comprises a reduction mechanism, 23a ... Output shaft, 24 ... Clutch (electromagnetic type), 27 ... Thrust receiving ball, 31 ... electromagnet, 32 ... connecting member, 33 ... return spring as urging member, 50 ... slide door opening / closing device for vehicle as door opening / closing device for vehicle, 51 ... entrance / exit as opening, 52 ... door As a sliding door, P1 ... first position, P2 ... second position, 100, 110, 120, 130, 140 ... clutch (mechanical).

Claims (8)

A motor body that rotationally drives the rotating shaft;
A speed reduction mechanism having a worm shaft that is integrally assembled with the motor body and to which the rotational force of the rotation shaft is transmitted and a worm wheel meshed with the worm shaft is accommodated, and passes through the worm shaft and the worm wheel. A motor comprising a speed reduction unit that outputs a rotational force from an output shaft coupled to rotate integrally with the worm wheel,
The motor is provided between the rotating shaft and the worm shaft, and when the motor body is driven, the rotating shaft and the worm shaft are connected to transmit the rotational force from the rotating shaft to the worm shaft. A motor comprising a clutch that disconnects the worm shaft from the worm shaft, which disconnects the worm shaft and the rotary shaft when the main body is not driven and becomes a rotational load of the output shaft from the load side. The motor according to claim 1,
The rotating shaft and the worm shaft are arranged coaxially. The motor according to claim 1 or 2,
The worm shaft has a thrust load received by a thrust receiving ball. The motor according to any one of claims 1 to 3,
The motor is characterized in that the clutch is an electromagnetic clutch. The motor according to claim 4,
The electromagnetic clutch is configured to connect the rotating shaft and the worm shaft when excited, and to disconnect the worm shaft and the rotating shaft when not excited. The motor according to claim 4 or 5,
The clutch is
It is interposed between the worm shaft and the rotating shaft, and is disposed at a first position where the worm shaft and the rotating shaft are disconnected, and at a second position where the rotating shaft and the worm shaft are connected. A connecting member made of a magnetic material,
An urging member that urges the connecting member to be disposed at either one of the first and second positions;
A motor comprising: an electromagnet that magnetically attracts the connecting member by excitation so as to be disposed at either one of the first and second positions against the urging force of the urging member. The motor with a clutch according to any one of claims 1 to 6 is used as a driving source, and a door for opening and closing an opening provided in the vehicle is opened and closed as the output shaft rotates by driving the motor. A vehicle door opening and closing device comprising:
When a command to automatically open and close the door is generated, the motor main body is driven and the rotation shaft of the motor main body and the worm shaft of the speed reduction unit are connected by the clutch to generate the rotational force from the rotation shaft. While transmitting to the output shaft through the worm shaft and the worm wheel, the door is opened and closed by rotation of the output shaft,
When the motor body is not driven, the worm shaft and the rotating shaft are disconnected by the clutch, and the rotating shaft that becomes the rotational load of the output shaft from the load side is separated from the worm shaft, and the door A vehicle door opening and closing device characterized in that the rotational force of the output shaft from the load side by manual opening and closing is transmitted to the worm wheel and the worm shaft and not transmitted to the rotational shaft. The vehicle door opening and closing device according to claim 7,
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.

Images