JP2015031009A - Actuator device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an actuator device capable of easily and surely attaching a turning member and a torsion spring by a simple structure.SOLUTION: A torsion spring 20 has a first end 20a locked with a locking part 23 provided on a first holding member 5, and a second end 20b locked with a locking protrusion part 25 provided on a wheel gear 10 as a turning member. An abutting protrusion part 30 which can be abutted to the locking protrusion part 25 circumferentially moved on a radial outer side of a coil part 20c by turning of the wheel gear 10 is provided in a peripheral edge portion (peripheral wall part 24) of a coil storage part 21 for storing a coil part 20c of the torsion spring 20. The abutting protrusion part 30 includes a regulating surface 31 regulating circumferential movement of the locking protrusion part 25 in a second direction, and a tilt surface 32 capable of guiding the circumferential movement of the locking protrusion part 25 getting over the abutting protrusion part 30 in a first direction.

Description

  The present invention relates to an actuator device.

  Conventionally, an actuator device using a motor as a drive source generates an urging force capable of rotating the rotating member in the anti-motor driving direction by being twisted by a rotating member that rotates by driving the motor. Some have torsion springs. For example, the actuator device described in Patent Document 1 includes a cam body having a cam surface, and a lever member that has a contact portion with the cam surface and is rotatably supported. In this actuator device, the cam body is a rotating member (wheel gear meshing with the worm gear) that is rotated by driving the motor. The lever member is configured to rotate based on the cam profile set on the cam surface.

  In this conventional example, the torsion spring is held by a holding member provided with a rotating shaft of the rotating member. Specifically, the holding member has a coil housing portion that has a rotating shaft of the rotating member on the radially inner side and houses the coil portion of the torsion spring, and the first end portion of the torsion spring is locked. And a locking portion to be provided. The second end of the torsion spring is locked to a locking protrusion provided on the rotating member. This locking projection is formed on the back side of the cam surface. And the contact protrusion which can contact | abut to the latching protrusion which moves the radial direction outer side of a coil part by the rotation of the rotation member at the peripheral part of a coil accommodating part is provided. .

  That is, with this configuration, after the motor drive is stopped, the rotation member rotates in the anti-motor drive direction based on the biasing force of the torsion spring. In addition, the rotation of the rotation member is restricted by the engagement protrusion provided on the rotation member coming into contact with the contact protrusion on the holding member side. Thus, the rotating member is stably returned to the initial position.

JP 2012-219510 A

  By the way, in the actuator device having the above-described configuration, when the torsion spring and the rotating member are assembled to the holding member, the engaging protrusion of the rotating member coincides with the abutting protrusion on the holding member side. It is desirable to be in the directional position. In other words, by having such a positional relationship, the locking protrusions that are locked on the second end only by sliding the locking protrusions arranged on the contact protrusions in the motor driving direction. The rotating member can be placed at the initial position in a state where the torsion spring is twisted and the torsion spring is applied. And thereby, the assembly work can be facilitated.

  However, in order to enable easy assembly as described above, high-precision quality control is required for the torsion spring. That is, when the torsion spring is in the non-twisted state, if the circumferential position of the second end portion does not coincide with the abutting protrusion, the locking protrusion for locking the second end is also used. The circumferential position cannot be matched with the contact protrusion. As a result, it is necessary to move the locking protrusion and the second end in the circumferential direction in the motor driving direction over the contact protrusion while holding the second end so as not to be detached from the locking protrusion. Disappear. As a result, there is a problem that the assembling work becomes complicated, and there is still room for improvement in this respect.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an actuator device capable of easily and reliably assembling the rotating member and the torsion spring with a simple configuration. There is to do.

  An actuator device that solves the above problem includes a rotating member that rotates in a first direction by driving a motor, a holding member provided with a rotating shaft of the rotating member, and the first holding member that is held by the holding member. A torsion spring that generates an urging force capable of rotating the rotating member in the second direction by being twisted in the direction, and the holding member rotates radially inside the rotating member. A coil housing portion that houses a coil portion of the torsion spring having a moving shaft; and a locking portion that locks a first end portion of the torsion spring; and the rotating member includes the torsion spring A locking projection for locking the second end of the spring is provided, and a peripheral portion of the coil housing portion moves in the circumferential direction on the outer side in the radial direction of the coil portion by rotating the rotating member. The locking projection An abutting protrusion that is capable of abutting against is provided, wherein the abutting protrusion includes a restriction surface that restricts circumferential movement of the locking protrusion in the second direction, and the first direction. It is preferable to provide an inclined surface capable of guiding the circumferential movement of the locking projection over the contact projection.

  That is, the torsion spring is twisted by rotating the rotating member in the first direction by driving the motor. Thus, after the motor drive is stopped, the rotating member rotates in the second direction based on the biasing force of the torsion spring twisted in the first direction. At this time, the locking projection that moves in the circumferential direction on the radially outer side of the coil portion comes into contact with the regulation surface of the contact projection and is locked to the contact projection so that the rotating member is Return to the initial position.

  Further, when the rotating member and the torsion spring are assembled, the locking projection is moved in the first direction so as to get over the contact projection. Then, the locking protrusion with which the end (second end) of the torsion spring is locked is locked with the contact protrusion, and the torsion spring is twisted and the rotating member is moved to the initial position. To place.

  According to the above configuration, at this time, the locking projection can smoothly get over the contact projection by being guided by the inclined surface provided on the contact projection. As a result, when the torsion spring is in the non-twisted state, even if the end position of the torsion spring does not coincide with the circumferential position of the abutment protrusion, the torsion spring is easily twisted in the first direction. On the other hand, it is possible to dispose the rotating member at the initial position by engaging the engaging protrusion with which the end of the torsion spring is engaged with the abutting protrusion. In addition, it is possible to prevent the end of the torsion spring from being detached from the locking protrusion when the locking protrusion gets over the contact protrusion. As a result, the rotating member and the torsion spring can be assembled easily and reliably with a simple configuration. And the manufacturing cost can be reduced by reducing the accuracy required for quality control of the torsion spring.

  In the actuator device that solves the above-described problem, the torsion spring has the second end portion disposed on the second direction side with respect to the abutting protrusion when the torsion spring is in a non-twisted state, and the rotating member. By rotating in the first direction, the second end portion is moved relative to the locking projection that moves in the circumferential direction from the second direction side toward the first direction with respect to the second end portion. It is preferably configured to be locked.

  According to the said structure, the edge part (2nd edge part) of a torsion spring can be easily latched to a latching protrusion, without performing exact position alignment. Moreover, in a series of operation | movement, the rotation protrusion can be arrange | positioned in an initial position by latching the latching protrusion to which the edge part of the torsion spring was latched by the contact protrusion. As a result, the assembling work of the rotating member and the torsion spring can be further facilitated.

In the actuator device that solves the above problem, it is preferable that the second end portion has a hook shape bent in the second direction.
According to the said structure, the edge part (2nd edge part) of a torsion spring can be more reliably latched with respect to the latching protrusion.

  According to the present invention, the rotating member and the torsion spring can be assembled easily and reliably with a simple configuration.

The top view of an actuator apparatus. The top view of an actuator apparatus (2nd holding member non-assembly state). The exploded perspective view of an actuator device. The perspective view of the vicinity of a torsion spring (initial position). The perspective view of the torsion spring vicinity (before 2nd edge part latching). The perspective view near the torsion spring (second end locking). The perspective view of the vicinity of the torsion spring (before getting over the contact protrusion). The perspective view of the vicinity of a torsion spring (inclined surface contact). The perspective view of the vicinity of the torsion spring (over the contact protrusion). The enlarged view of the contact protrusion vicinity. (A) (b) Operation | movement explanatory drawing of the wheel gear and lever member as a cam body. (A) (b) Operation | movement explanatory drawing of an actuator apparatus and a locking mechanism.

Hereinafter, an embodiment of an actuator device will be described with reference to the drawings.
As shown in FIGS. 1 to 3, the actuator device 1 of the present embodiment includes a case 2 having a flat and substantially box shape. The motor 3 and the speed reducer 4 serving as drive sources are accommodated in the case 2.

  More specifically, the case 2 of the present embodiment is formed by assembling the first holding member 5 having the opening 5a and the second holding member 6 that closes the opening 5a of the first holding member 5. ing.

  In the present embodiment, a motor holding portion 7 is formed on the first holding member 5. The motor 3 is held by the motor holding portion 7 so that the motor shaft 3a is substantially perpendicular to the opening direction of the first holding member 5 (the direction perpendicular to the paper surface in FIG. 2). Is housed inside.

  The speed reducer 4 according to the present embodiment includes a worm gear 8 that rotates integrally with the motor shaft 3 a and a wheel gear 10 that meshes with the worm gear 8. In other words, in the present embodiment, a known worm and wheel is employed for the speed reducer 4. And the 1st holding member 5 is provided with the wheel accommodating part 11 which accommodates the wheel gear 10 rotatably.

  Specifically, the wheel accommodating portion 11 of the present embodiment is formed in a substantially cylindrical shape whose opening direction coincides with the first holding member 5. A rotation shaft 12 extending in the opening direction is provided at the center of the wheel housing portion 11. The wheel gear 10 is accommodated in the wheel accommodating portion 11 while being supported by the rotating shaft 12.

  As shown in FIGS. 3 and 4, the actuator device 1 according to the present embodiment is twisted by a wheel gear 10 that is rotated by driving a motor to rotate the wheel gear 10 in the anti-motor driving direction. A torsion spring 20 for generating a possible biasing force is provided.

  That is, in the actuator device 1 according to the present embodiment, the wheel gear 10 as a rotating member rotates in one direction based on the driving force of the motor 3. Further, when the motor driving direction is the “first direction (clockwise direction in FIG. 4)”, the torsion spring 20 is twisted in the first direction and becomes the anti-motor driving direction. A biasing force is generated so as to rotate the wheel gear 10 in two directions (counterclockwise direction in FIG. 4). The actuator device 1 of the present embodiment is configured to return the wheel gear 10 rotated by the motor drive to the initial position P0 based on the urging force of the torsion spring 20.

  More specifically, the first holding member 5 of the present embodiment is a coil that houses the coil portion 20c of the torsion spring 20 on the base end side of the rotating shaft 12 provided at the center of the wheel housing portion 11 as described above. The container 21 is included. In the present embodiment, the coil housing portion 21 has a groove shape that concentrically surrounds the rotating shaft 12 of the wheel gear 10. That is, the torsion spring 20 is attached to the first holding member 5 in such a manner that the coil portion 20c is inserted from the axial direction into the substantially annular groove-shaped coil housing portion 21 that opens in the same direction as the wheel housing portion 11. Is done. Thus, the torsion spring 20 is held by the first holding member 5 in a state where the rotating shaft 12 of the wheel gear 10 is disposed on the radially inner side of the coil portion 20c.

  As shown in FIG. 4, the first holding member 5 of the present embodiment includes a locking portion 23 to which the first end 20 a of the torsion spring 20 is locked. Specifically, a slit-shaped notch 23 a that opens in the same direction as the coil housing portion 21 (upper side in the figure) is formed on the peripheral wall portion 24 that forms the peripheral portion of the coil housing portion 21. Yes. That is, when the coil portion 20c of the torsion spring 20 is inserted into the coil housing portion 21, the first end portion 20a is inserted into the notch 23a. In this embodiment, the cutout 23 a functions as the locking portion 23.

  On the other hand, as shown in FIGS. 3 and 4, the wheel gear 10 of the present embodiment is pivotally supported by the rotation shaft 12 provided in the wheel housing portion 11, thereby the base end side of the rotation shaft 12. It arrange | positions in the position which opposes in the axial direction with respect to the torsion spring 20 hold | maintained (in FIG. 4, lower side). Further, a locking projection 25 that locks the second end 20 b of the torsion spring 20 is provided on the surface facing the torsion spring 20.

  In the present embodiment, the locking protrusion 25 is formed at a radial position (peripheral portion of the wheel gear 10) that faces the peripheral wall portion 24 that forms the peripheral portion of the coil housing portion 21 as described above. Further, a contact protrusion 30 that protrudes toward the wheel gear 10 is formed on the peripheral wall 24. That is, the locking protrusion 25 moves in the circumferential direction on the radially outer side of the coil portion 20c accommodated in the coil accommodating portion 21 as the wheel gear 10 rotates. And the contact protrusion 30 is provided in the position which can contact | abut with respect to the latching protrusion 25 which moves the circumferential direction.

  More specifically, as shown in FIG. 4, the abutment protrusion 30 according to the present embodiment abuts on the engagement protrusion 25 that moves in the circumferential direction in the second direction, thereby engaging the engagement protrusion in the second direction. A restriction surface 31 for restricting the circumferential movement of the portion 25 is provided. In the present embodiment, this defines the initial position P0 of the wheel gear 10 that constitutes the rotating member.

  That is, in the actuator device 1 of the present embodiment, the wheel gear 10 is disposed at a position where the locking projection 25 abuts on the regulation surface 31 of the abutment projection 30 when the motor is not driven. Then, the locking projection 25 moves in the circumferential direction in the first direction so as to follow the peripheral wall 24 formed on the peripheral edge of the coil housing portion 21 when the wheel gear 10 is rotated by driving the motor. .

  At this time, the torsion spring 20 is twisted by the wheel gear 10 to generate a biasing force capable of rotating the wheel gear 10 in the second direction. In addition, the torsion spring 20 of this embodiment is elastically deformed so that the coil part 20c is tightened by applying the twist of a 1st direction in this way. After the motor drive is stopped, the wheel gear 10 is returned to the initial position P0 based on the urging force of the torsion spring 20.

  Here, in the present embodiment, the torsion spring 20 is previously twisted in the first direction in a state of being assembled to the first holding member 5. That is, at the initial position P0, the locking protrusion 25 is pressed against the restriction surface 31 of the contact protrusion 30 based on the biasing force generated by the torsion spring 20. In this embodiment, the wheel gear 10 is surely returned to the initial position P0.

  More specifically, as shown in FIGS. 5 and 6, the torsion spring 20 of the present embodiment is in contact with the second end 20 b when the torsion spring 20 is not twisted when assembled to the first holding member 5. It is comprised so that it may be arrange | positioned rather than the protrusion 30 in the 2nd direction side. Further, the locking projection 25 of the wheel gear 10 is disposed on the second direction side with respect to the second end 20b. And in this embodiment, this is the latching protrusion which moves the circumferential direction toward the 1st direction from the 2nd direction side rather than the 2nd end part 20b because the wheel gear 10 rotates to a 1st direction. The second end portion 20 b of the torsion spring 20 is locked to the portion 25.

  Specifically, the second end portion 20b of the torsion spring 20 has a hook shape (substantially J-shaped) bent toward the second direction. In addition, the first direction end 25a of the locking projection 25 has a tapered shape (substantially semicircular cross section) corresponding to the flange shape of the second end portion 20b. In this embodiment, the second end portion 20b of the torsion spring 20 is reliably locked to the locking protrusion 25.

  Further, as shown in FIGS. 7 to 9, in this embodiment, the wheel gear 10 is further rotated in the first direction from this state, so that the locking projection 25 is integrated with the second end 20b. It moves over the contact protrusion 30 and moves circumferentially in the first direction. Then, as shown in FIG. 4, the wheel gear 10 has its locking projection 25 abuts against the regulation surface 31 of the contact projection 30 based on the urging force in the second direction generated by the torsion spring 20. It is arranged at the initial position P0 in contact.

  More specifically, as shown in FIGS. 8 and 10, the abutment protrusion 30 of the present embodiment is brought into contact with the locking protrusion 25 that moves in the circumferential direction in the first direction. An inclined surface 32 is provided that can guide the circumferential movement of the locking projection 25 over the contact projection 30.

  Specifically, the inclined surface 32 presses (pushes up) the locking projection 25 that is in contact with the inclined surface 32 toward the distal end side (the upper side in each drawing) of the rotating shaft 12. It is configured. Thereby, the latching protrusion 25 moves in the first direction in such a manner as to slide on the inclined surface 32. In the present embodiment, the assembling work is facilitated by smoothly allowing the locking projection 25 to get over the contact projection 30.

  As shown in FIGS. 2 and 3, the wheel gear 10 of the present embodiment has a spiral surface that is located on the opening 5a side (the front side in FIG. 2 in the direction orthogonal to the paper surface) of the first holding member 5. The cam surface 33 has a cam cam 33a. Further, the first holding member 5 is provided with a support shaft 34 parallel to the rotation shaft 12 of the wheel gear 10. The actuator device 1 according to the present embodiment includes a lever member 35 that has a contact portion 35 a that contacts the cam surface 33 and is rotatably supported by a support shaft 34.

  As shown in FIGS. 11A and 11B, the lever member 35 has a first lever portion 36 and a second lever portion 37 that extend in opposite directions with a support shaft 34 serving as a rotation center therebetween. Yes. The lever member 35 has a third lever portion 38 that extends in a direction substantially orthogonal to the first lever portion 36 with a support shaft 34 serving as a rotation center as a base end. In the present embodiment, the tip portion of the third lever portion 38 serves as an abutting portion 35 a for the cam surface 33 of the wheel gear 10.

  More specifically, the lever member 35 of the present embodiment is biased by a biasing member (not shown) so that the abutting portion 35a abuts against the cam crest 33a of the cam surface 33 from the radially outer side. It is configured. Further, the cam surface 33 is configured such that the abutting portion 35a of the lever member 35 that abuts against the cam crest 33a moves in the radial direction on the cam surface 33 based on the spiral shape of the cam crest 33a. And the lever member 35 of this embodiment is comprised so that it may rotate based on the cam profile prescribed | regulated by the cam surface 33 by this.

  Specifically, in this embodiment, the wheel gear 10 as the cam body rotates in the first direction, so that the contact portion 35a of the lever member 35 that contacts the cam surface 33 faces outward in the radial direction. Configured to move. And the lever member 35 of this embodiment is comprised so that it may rotate in the clockwise direction in the figure by this.

  On the other hand, when the wheel gear 10 rotates in the second direction, the contact portion 35a moves toward the inside in the radial direction. And the lever member 35 of this embodiment is comprised so that it may rotate in the counterclockwise direction in the figure by this.

  More specifically, as shown in FIGS. 1 and 2, the actuator device 1 of the present embodiment is configured such that a part of the lever member 35 is disposed outside the case 2. Specifically, as shown in FIG. 1, the case 2 of the present embodiment intersects the axis of the support shaft 34 in a state where the first holding member 5 and the second holding member 6 are assembled. An opening 39 is provided in the side surface portion located in the direction in which the image is to be moved. The lever member 35 is configured such that the tip 36 a of the first lever portion 36 is disposed outside the case 2 through the opening 39.

  As shown in FIGS. 12A and 12B, the actuator device 1 according to the present embodiment has the lever member 35, specifically, the first lever portion 36 whose tip 36 a protrudes outside the case 2 as the output portion 40. Then, the lock mechanism 41 is driven.

  Specifically, the lock mechanism 41 includes a latch 44 that has a groove 43 that engages the striker 42 on the peripheral surface thereof, and a latch 44 that is rotatably provided. And a pole 45 capable of restricting the rotation and maintaining the engaged state with the striker 42. And the actuator device 1 presses the lever portion 45a of the pawl 45 by the first lever portion 36 of the lever member 35 constituting the output portion 40, and rotates the pawl 45 to thereby rotate the first locking member. It is possible to release the engagement state between the latch 44 and the pole 45 as the second lock member.

Next, the operation of the actuator device 1 configured as described above will be described.
That is, when the wheel gear 10 is rotated in the first direction by driving the motor, the lever member 35 is rotated in conjunction with the wheel gear 10 (see FIG. 11B, clockwise in the same figure). . At this time, in the actuator device 1 of the present embodiment, the first lever portion 36 (the tip 36 a thereof) protruding from the case 2 presses the lever portion 45 a of the pole 45, and the engagement protrusion 46 is released from the latch 44. It arrange | positions in the position which rotates the pole 45 in the direction to separate (refer FIG.12 (b), the counterclockwise direction in the figure). As a result, the latch 44 and the pawl 45 are disengaged to allow the latch 44 to rotate, and the striker 42 can be detached from the groove 43, whereby the lock mechanism 41 is unlocked. Transition to the locked state.

  Further, after the motor drive is stopped, the wheel gear 10 rotates in the second direction based on the urging force of the torsion spring 20. As a result, when the wheel gear 10 returns to the initial position P0, the lever member 35 interlocked with the wheel gear 10 also returns to a position where the first lever portion 36 can press the lever portion 45a of the pole 45. (See FIG. 11 (a) and FIG. 12 (a)).

As described above, according to the present embodiment, the following effects can be obtained.
(1) The torsion spring 20 has a first end portion 20a engaged with an engaging portion 23 provided on the first holding member 5, and a second end portion 20b provided on a wheel gear 10 as a rotating member. The locking protrusion 25 is locked. Further, the peripheral portion (peripheral wall portion 24) of the coil accommodating portion 21 that accommodates the coil portion 20c of the torsion spring 20 is moved in the circumferential direction on the radially outer side of the coil portion 20c as the wheel gear 10 rotates. A contact protrusion 30 that can contact the stop protrusion 25 is provided. The abutment protrusion 30 has a regulating surface 31 that restricts the circumferential movement of the locking protrusion 25 in the second direction, and the circumferential movement of the locking protrusion 25 that gets over the abutment protrusion 30 in the first direction. And an inclined surface 32 capable of guiding.

  That is, the torsion spring 20 is twisted by rotating the wheel gear 10 in the first direction by driving the motor. Thereby, after the motor drive is stopped, the wheel gear 10 rotates in the second direction based on the urging force of the torsion spring 20 twisted in the first direction. At this time, the locking protrusion 25 that moves in the circumferential direction on the radially outer side of the coil portion 20c comes into contact with the restriction surface 31 of the contact protrusion 30 and is locked to the contact protrusion 30. The wheel gear 10 returns to the initial position P0.

  Further, when the wheel gear 10 and the torsion spring 20 are assembled, the locking projection 25 is moved in the first direction so as to get over the contact projection 30. Then, by locking the locking protrusion 25 with the second end 20b locked to the abutting protrusion 30, the wheel gear 10 is brought to the initial position P0 while the torsion spring 20 is twisted. Deploy.

  According to the above configuration, at this time, the locking projection 25 can smoothly get over the contact projection 30 by being guided by the inclined surface 32 provided on the contact projection 30. Thereby, when the torsion spring 20 is in the non-twisted state, even if the circumferential position of the second end portion 20b does not coincide with the contact protrusion 30, the torsion spring 20 is easily twisted in the first direction. In addition, the wheel gear 10 can be disposed at the initial position P0 by locking the locking protrusion 25 with the second end 20b locked to the contact protrusion 30. In addition, when the locking projection 25 gets over the contact projection 30, it is possible to suppress detachment of the second end portion 20 b locked to the locking projection 25. As a result, the wheel gear 10 and the torsion spring 20 can be assembled easily and reliably with a simple configuration. And the precision requested | required for the quality control of the torsion spring 20 is eased, and it can aim at reduction of manufacturing cost.

  (2) When the torsion spring 20 is assembled to the first holding member 5, the second end 20 b of the torsion spring 20 is disposed on the second direction side of the contact protrusion 30 when the torsion spring 20 is in the non-twisted state. Further, the locking projection 25 of the wheel gear 10 is disposed on the second direction side with respect to the second end 20b. Then, the torsion spring 20 rotates on the locking projection 25 that moves in the circumferential direction from the second direction side toward the first direction with respect to the second end 20b as the wheel gear 10 rotates in the first direction. On the other hand, the second end portion 20b is configured to be locked.

  According to the above configuration, the second end 20b of the torsion spring 20 can be easily locked to the locking projection 25 without performing precise alignment. Further, in the series of operations, the locking projection 25 to which the second end portion 20b of the torsion spring 20 is locked is locked to the contact projection 30 and the wheel gear 10 is disposed at the initial position P0. Can do. As a result, the assembly work of the wheel gear 10 and the torsion spring 20 can be further facilitated.

  (3) The second end 20b of the torsion spring 20 has a bowl shape bent in the second direction. And the 1st direction end 25a of the latching protrusion 25 has a taper shape corresponding to the collar shape of the 2nd end part 20b.

According to the said structure, the 2nd end part 20b of the torsion spring 20 can be latched with respect to the latching protrusion 25 more reliably.
In addition, you may change the said embodiment as follows.

  In the above embodiment, the wheel gear 10 of the speed reducer (worm & wheel) 4 is a rotating member that rotates in the second direction based on the urging force of the torsion spring 20, but the rotating member is arbitrarily changed. May be. For example, a cam body or an output member provided independently of the speed reduction mechanism may be used as the cam body.

  In the above embodiment, the actuator device 1 drives the lock mechanism 41 using the lever member 35 (the first lever portion 36 thereof) that rotates in conjunction with the wheel gear 10 as the cam body as the output portion 40. . However, the present invention is not limited to this, and the driving target may be arbitrarily changed. And also about the case where the lock mechanism 41 is driven, what kind of thing may be sufficient as the structure of the lock mechanism 41, and a drive mode.

  In the above embodiment, the case 2 is formed by assembling the first holding member 5 and the second holding member 6. The wheel gear 10 and the torsion spring 20 as rotating members are accommodated in the case 2 by being held by the first holding member 5. However, the present invention is not limited thereto, and the configuration of the holding member may be arbitrarily changed. For example, the structure which the rotation member, the torsion spring 20, etc. exposed outside may be sufficient. Further, the case 2 may be formed from one or three or more holding members. The rotating member and the torsion spring may be held by any holding member.

  -In the above-mentioned embodiment, although the coil accommodating part 21 was formed in the annular groove shape, you may change the shape arbitrarily. For example, it may be cylindrical. And the structure which does not have the surrounding wall part 24 in the position which becomes the radial direction outer side of the coil part 20c may be sufficient.

  -Moreover, it is good also as a structure which the latching protrusion 25 slides on the surrounding wall part 24. FIG. Thereby, the smooth circumferential movement can be ensured. Further, when assembled, the second end 20b of the torsion spring 20 in the non-twisted state can be stably held. And thereby, the second end portion 20b is more reliably locked to the locking protrusion 25 that moves in the circumferential direction from the second direction side toward the first direction than the second end portion 20b. Can do.

  In the above embodiment, the second end 20b of the torsion spring 20 has a hook shape (substantially J-shaped) bent toward the second direction, and the first direction end 25a of the locking projection 25 is The taper has a tapered shape (substantially semicircular cross section) corresponding to the ridge shape of the second end portion 20b. However, the present invention is not limited thereto, and these shapes may be arbitrarily changed.

  In the above embodiment, the torsion spring 20 is elastically deformed so that the coil portion 20c is tightened by being twisted in the first direction, but by elastically deforming in the expanding direction, The structure which generate | occur | produces the urging | biasing force of the 2nd direction may be sufficient.

  In addition, the shape of the contact protrusion 30 may be changed as long as it has the regulation surface 31 and the inclined surface 32. For example, by adjusting the inclination angle of the inclined surface 32, the wheel gear 10 rotates in the first direction against the urging force of the torsion spring 20 based on the motor drive, so that the locking projection 25 on the inclined surface 32. May be configured to be able to restrict the circumferential movement of the locking protrusion 25 in the first direction over the contact protrusion 30.

  That is, the urging force in the second direction generated by the torsion spring 20 increases as the wheel gear 10 rotates greatly in the first direction. By utilizing this, when the motor torque is weakened by the urging force of the torsion spring 20, the inclined surface 32 (inclination angle) is set so that the locking projection 25 of the wheel gear 10 cannot get over. To do. Then, by restricting the circumferential movement of the locking projection 25 in the first direction, it can function as a stopper that restricts the rotation in the first direction by the motor drive.

Next, technical ideas that can be grasped from the above embodiments will be described together with effects.
(A) The actuator device characterized in that the first direction end of the locking projection has a tapered shape corresponding to the hook shape of the second end portion. By setting it as such a structure, the edge part (2nd edge part) of a torsion spring can be more reliably latched with respect to the latching protrusion.

  (B) The abutting protrusion is configured such that the locking protrusion is formed on the inclined surface when the rotating member rotates in the first direction against the biasing force of the torsion spring based on the motor drive. An actuator device characterized by being configured to be capable of restricting circumferential movement of the locking protrusion in the first direction over the contact protrusion when contacted.

  That is, the urging force in the second direction generated by the torsion spring increases as the rotating member rotates significantly in the first direction. This is used to prevent the locking protrusion of the rotating member from getting over the contact protrusion when the motor torque is weakened by the urging force of the torsion spring. The part can be made to function as a stopper capable of restricting the rotation in the first direction by the motor drive.

  (C) The rotating member is a cam body having a cam surface, and the locking protrusion is formed on the back side of the cam surface and has a contact portion with the cam surface. An actuator device comprising a lever member rotatably supported.

  (D) The lever member engages with the first lock member to press the second lock member that restricts the rotation of the first lock member, thereby causing the second lock member and the first lock member to An actuator device characterized in that the engagement is released.

  DESCRIPTION OF SYMBOLS 1 ... Actuator apparatus, 2 ... Case, 3 ... Motor, 5 ... 1st holding member, 8 ... Worm gear, 10 ... Wheel gear (rotating member and cam body), 12 ... Turning shaft, 14 ... Cam surface, 20 ... Torsion spring, 20a ... first end, 20b ... second end, 20c ... coil part, 21 ... coil housing part, 23 ... locking part, 24 ... peripheral wall part (peripheral part), 25 ... locking protrusion, 25a ... End in the first direction, 30 ... Contact projection, 31 ... Restriction surface, P0 ... Initial position, 32 ... Inclined surface, 33 ... Cam surface, 33a ... Cam crest, 35 ... Lever member, 35a ... Contact portion, 36 ... first lever part, 36a ... tip (output part), 38 ... third lever part (contact part), 40 ... output part, 41 ... lock mechanism, 42 ... striker, 43 ... groove part, 44 ... latch (first) 1 lock member), 45... Pole (second lock member).

Claims (3)

A rotating member that rotates in a first direction by driving a motor;
A holding member provided with a rotating shaft of the rotating member;
A torsion spring that generates a biasing force capable of rotating the rotating member in the second direction by being held by the holding member and twisted in the first direction;
The holding member has a rotating shaft of the rotating member on the radially inner side and a coil housing portion that houses a coil portion of the torsion spring, and a latch in which a first end portion of the torsion spring is latched A part, and
The rotating member includes a locking projection for locking the second end of the torsion spring,
A contact projection that can contact the locking projection that moves in the circumferential direction on the outer side in the radial direction of the coil portion when the rotation member rotates is provided at a peripheral portion of the coil housing portion. It can be
The contact protrusion is
A restricting surface for restricting circumferential movement of the locking protrusion in the second direction;
And an inclined surface capable of guiding the circumferential movement of the locking protrusion over the contact protrusion in the first direction. The actuator device according to claim 1,
When the torsion spring is in a non-twisted state, the second end portion is disposed on the second direction side with respect to the abutting protrusion, and the rotating member rotates in the first direction. Accordingly, the second end portion is configured to be locked to a locking protrusion that moves in the circumferential direction from the second direction side toward the first direction with respect to the second end portion. ,
An actuator device characterized by the above. The actuator device according to claim 2,
The second end has a hook shape bent in the second direction;
An actuator device characterized by the above.