JP2005306163A - Steering lock drive device and actuator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a steering lock drive device capable of deciding the stopping positions of a power transmitting member and an output shaft unambiguously by the position of a stopper for a cover. <P>SOLUTION: The steering lock drive device 10 is equipped with a case 11 having the cover 12, a motor 20 to be accommodated in the case 20, an output gear 25 accommodated rotatably in the case and driven into rotation by the drive shaft 21 of a motor through a deceleration gear 23, an output shaft 26 rotating together with the output gear, and an output member 31 mounted on the output shaft and used in locking and unlocking a steering shaft, wherein the front extremity 29a of the power transmitting member 29 is held pinchedly by a pair of dampers 28 accommodated in a damper accommodation part 25b of the output gear 25 while the power transmitting member is secured to the forefront 26a of the output shaft, and the output gear 25 is supported rotatably at the forefront part 26b of the output shaft, and a stopper 13 to stop the power transmitting member is installed on the cover 12. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an actuator and a steering lock driving device suitable for use in a device for locking and unlocking a steering shaft of a vehicle.

  A conventional steering lock driving device includes a case having a cover that covers a motor housing portion and a gear housing portion, a motor that is housed in the motor housing portion of the case, and a motor that is rotatably accommodated in the gear housing portion of the case. An output gear that is rotationally driven by the drive shaft via a reduction gear, an output shaft that is fixed to the shaft core of the output gear and rotates together with the output gear, and is attached to the output shaft to lock or unlock the steering shaft. An output cam used for locking, and a pair of limit switches that are disposed in the gear housing portion of the case and are turned on or off by a cam portion that is formed integrally with the shaft portion of the output gear.

  Further, on the upper surface of the output gear, a protrusion that is in contact with and locked to the protrusion that protrudes on the back surface of the cover is provided. The cam portion of the shaft portion of the output gear turns on the limit switch so that the motor is deenergized. In order to suppress further rotation of the output gear, this output gear protrusion And the projection of the cover come into contact with each other. In order to absorb the load when the projections of the output gear and the projections of the cover are locked, an elastic body is attached to the projections of the cover.

JP 2002-205622 A

JP 2002-326559 A

  However, in the conventional steering lock driving device, since the elastic body is attached to the protrusion of the cover so as to absorb the load at the time of locking with the protrusion of the output gear, the protrusion of the output gear is the protrusion of the cover. The output gear and the output shaft rotate without stopping by the amount of contraction of the elastic body even after they abut, and it is difficult to uniquely determine the stop position of the output gear and the output shaft depending on the position of the projection on the cover. In addition, since the output gear and the output shaft rotate by the amount of contraction of the elastic body, the cam portion of the shaft portion of the output gear passes the limit switch, so-called overcoming phenomenon occurs, or the motor is energized due to malfunction of the limit switch. May not be turned off, or in some cases, the operation lever of the limit switch may be damaged.

  Accordingly, the present invention has been made to solve the above-described problems, and provides an actuator and a steering lock driving device capable of uniquely determining the stop positions of the power transmission member and the output shaft by the positions of the stoppers of the cover. The purpose is to do.

  The invention described in claim 1 is an actuator, and includes a case having a cover, an armature, a motor disposed in the case, a gear rotated by the armature of the motor, A damper disposed on a damper mounting portion formed on the gear, a power transmission member that selectively contacts one of the dampers and is driven by the damper, and is fixed to the power transmission member; A shaft that is formed separately from the gear and rotatably supports the gear, is rotatably supported by the case, and is formed on a cover of the case, and the power transmission member has a predetermined first angle. And a stopper that collides with the power transmission member when it rotates only.

The invention described in claim 2 is the invention described in claim 1, wherein the damper includes a pair of damper pieces, and the power transmission arm has a plate-like bent portion sandwiched between the pair of dampers. A front end portion formed and a rear end portion that is formed larger than the length of the front end portion in the radial direction of the gear and capable of colliding with the stopper are formed.

The invention described in claim 3 is the invention described in claim 1 or 2, wherein the cam portion is integrally formed on the shaft, and the shaft has the first shaft in the case. When the second angle smaller than the angle is rotated, switch means for changing the state from the first state to the second state by the cam portion is arranged.

The invention of claim 4 is a steering lock driving device, a case having a cover for covering the motor accommodating portion and the gear accommodating portion, a motor accommodated in the motor accommodating portion of the case, and a gear accommodating portion of the case An output gear that is rotatably accommodated in the motor and is rotationally driven via a reduction gear by the drive shaft of the motor, an output shaft that is rotatably supported by the case and is rotated by the rotation of the output gear, and the output shaft And a steering lock driving device including an output member used for locking and unlocking the steering shaft, a damper is accommodated in a damper accommodating portion formed in the output gear, and a power transmission member is interposed between the dampers. While locking the front end, the power transmission member is fixed to the tip of the output shaft, and the output shaft Serial rotatably supports the output gear, characterized in that a stopper for stopping the power transmission member to the cover after rotated by a predetermined angle.

  A fifth aspect of the present invention is the steering lock driving device according to the fourth aspect, wherein the damper includes a pair of damper pieces, and is a plate-like member that is sandwiched between the pair of dampers at a front end portion of the power transmission member. The bent portion is formed, and the rear end portion of the power transmission member is formed longer than the front end portion in the radial direction of the output gear to form a stopper portion that is brought into contact with and locked to the stopper.

  A sixth aspect of the present invention is the steering lock driving device according to the fourth aspect, wherein a cam portion is formed integrally with the output shaft, and the output shaft is rotated by the rotation of the power transmission member in the gear housing portion of the case. A switch means that is turned on or off by the cam portion when it is rotated at an angle smaller than the predetermined angle is arranged.

  A seventh aspect of the present invention is the steering lock driving device according to the sixth aspect, wherein the switch means is configured so that the output shaft exceeds an angle smaller than the predetermined angle of the rotation amount of the power transmission member. The stopper is arranged on the cover at a position where the on or off operation state is maintained even when the angle is rotated to the predetermined angle.

  As described above, according to the first aspect of the present invention, the pair of dampers disposed in the damper mounting portion formed on the gear and the one damper of the pair of dampers are selectively brought into contact with each other. A power transmission member driven by a contacted damper, a shaft fixed to the power transmission member, formed separately from the gear and rotatably supporting the gear, and a shaft rotatably supported by the case; A stopper is formed on the cover of the case and the power transmission member collides with the power transmission member when the power transmission member rotates by a predetermined first angle. It can be uniquely determined by the position of the stopper of the cover.

According to the second aspect of the present invention, the power transmission member is formed with a front end portion in which a plate-like bent portion sandwiched between the pair of dampers is formed, and is formed to be larger in the radial direction of the gear than the front end portion. Therefore, the rear end portion of the power transmission member can collide with the stopper, but the front end portion does not collide with the stopper. Therefore, if the stopper is formed small, the rotation range of the power transmission member can be increased, and the range in which the power transmission member can be rotated can be appropriately selected by appropriately selecting the size of the stopper.

According to the third aspect of the present invention, the cam portion is integrally formed on the shaft, and the case is rotated by the cam portion when the shaft rotates a second angle smaller than the first angle. Since switch means for changing the state from the first state to the second state is arranged, a position signal is generated by the switch means, and the current supplied to the motor is cut off before the power transmission member collides with the stopper. It becomes possible to do.

According to the invention of claim 4, the pair of dampers are accommodated in the damper accommodating portion formed in the output gear, the front end portion of the power transmission member is held between the pair of dampers, and the middle portion of the power transmission member is output. The shaft is fixed to the tip of the shaft, and the output gear is rotatably supported on the output shaft, the rotation of the reduction gear is transmitted to the damper, the rotation of the damper is transmitted to the power transmission member, and the power transmission member is at a predetermined angle. Since the stopper that collides when rotating only is provided on the cover, the stop position of the power transmission member and the output shaft can be uniquely determined by the position of the stopper of the cover.
Moreover, the inertia energy which a motor has can be reliably consumed with a damper.

  According to the invention of claim 5, since the plate-like bent portion held between the pair of dampers is formed at the front end portion of the power transmission member, even when the output gear continues to rotate, the front end portion of the power transmission member It is possible to absorb the impact force by compressing the damper at the bent portion, and it is possible to reliably prevent damage to the power transmission member and the stopper of the cover. In addition, since the rear end portion of the power transmission member is formed longer in the radial direction of the output gear than the front end portion, and the stopper portion is brought into contact with and locked to the stopper, the rear end portion of the power transmission member is used as a stopper of the cover. The power transmission member can be reliably stopped by abutting and locking.

  According to the sixth aspect of the present invention, the cam portion is formed integrally with the output shaft, and the cam portion is rotated when the output shaft rotates in the gear housing portion of the case at an angle smaller than a predetermined angle of the rotation amount of the power transmission member. Since the switch means that is turned on or off is disposed, the phenomenon that the cam portion gets over the switch means can be prevented, and the switch means can be reliably turned on or off by the cam portion.

  According to the invention of claim 7, the switch means is in an on or off operation state even if the output shaft rotates to a predetermined angle after exceeding an angle smaller than a predetermined angle of the rotation amount of the power transmission member. Therefore, even if a seesaw type switch or the like is used as the switch means, the seesaw type switch or the like can be reliably turned on or off.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  1 is a cross-sectional view of a main part showing a steering lock driving device according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along line XX in FIG. 1, and FIG. 3 is an exploded view around an output shaft of the steering lock driving device. FIG. 4 is a plan view of a case used in the steering lock driving device, FIG. 5 is a perspective view of a cover for closing the case, viewed from the inside, and FIG. 6 is a front view of the steering lock driving device. 7 is a bottom view of the steering lock driving device.

  As shown in FIGS. 1, 2, and 6, the steering lock driving device 10 includes a box case 11 made of a synthetic resin having a motor housing portion 11 a and a gear housing portion 11 b communicating with the motor housing portion 11 a. The cover 11 made of synthetic resin is fastened and fixed with screws 15 so as to cover the motor accommodating portion 11a and the gear accommodating portion 11b of the case 11. A motor 20 is accommodated in the motor accommodating portion 11a of the case 11, and both ends of the armature shaft (drive shaft) 21 are rotatably supported by a pair of bearing portions 16a and 16b. A worm 22 is formed at the tip of the armature shaft 21, and the worm 22 enters the gear housing 11b. When current is supplied to an armature coil of an armature (not shown) attached to the armature shaft 21, the armature is rotated forward or backward, and when the current supplied to the armature coil is interrupted, an electromagnetic braking circuit is formed. Thus, an electromagnetic braking current flows through the armature coil.

  As shown in FIGS. 1 and 2, the gear housing portion 11 b of the case 11 is rotationally driven via a reduction gear 23 made of synthetic resin and driven by the armature shaft 21 of the motor 20. The synthetic resin output gear 25 is rotatably accommodated. The reduction gear 23 has a large-diameter gear portion 23 b that meshes with the worm 22 of the armature shaft 21 of the motor 20 and a small-diameter gear 23 c that meshes with the output gear 25. A round hole 23a is formed at the center of the reduction gear 23, and a support shaft 24 passes through the round hole 23a. The upper and lower ends of the support shaft 24 are fitted into the recess 11d of the bottom wall 11c of the case 11 and the recess 12d of the inner surface 12a of the cover 12, and the reduction gear 23 is rotatable with the case 11 via the support shaft 24. It is supported by the cover 12.

  As shown in FIGS. 1 to 3, the output gear 25 is made of metal and is rotatably supported by a cylindrical output shaft 26. That is, the output shaft 26 is rotatably supported by the bearing 17 fitted to the bottom wall 11c of the case 11 and the bearing portion 12e where the cover 12 is formed. The body portion 26b of the output shaft 26 rotatably supports the central cylindrical portion 25a of the output gear 25. In addition, a damper housing portion 25 b is formed on the upper surface of the output gear 25. The damper accommodating portion 25b is formed in a sector-like concave shape between the cylindrical portion 25a and a pair of damper receiving wall portions 25c, 25c that also serve as a partition wall and the outer peripheral wall portion 25d, and the sector-shaped and concave damper accommodating portion 25b. A pair of rubber dampers (dampers) 28 and 28 are accommodated therein. Between the pair of rubber dampers 28, 28, a plate-like bent portion 29 b bent downward at the front end portion 29 a of a power transmission arm (power transmission member) 29 is inserted and held between the dampers 28, 28. . The body portion 26 b of the output shaft 26 protruding from the upper surface of the output gear 25 is fitted into a round hole (midway portion) 29 c formed in the center of the power transmission arm 29, and the distal ends of the power transmission arm 29 and the output shaft 26 are inserted. 26a is fixed by spline coupling. Further, the length of the output gear 25 in the radial direction of the rear end portion 29d of the power transmission arm 29 is longer than that of the front end portion 29a in the radial direction of the output gear 25. The rear end portion 29d is a cover described later. It is a stopper portion that is brought into contact with and locked to the 12 stoppers 13. As shown in FIGS. 1 and 5, when the power transmission arm 29 rotates on the inner surface 12 a of the cover 12 by a predetermined angle (hereinafter referred to as a first angle), the power transmission arm 29 is provided. The stopper 13 is formed so as to project integrally, which stops the rotation of the power transmission arm 29.

  As shown in FIGS. 1, 3, and 4, a cam portion 27 is integrally formed at the center portion 26 c of the output shaft 26. In the gear housing portion 11 b of the case 11 facing the cam portion 27, the output shaft 26 is rotated by an angle smaller than the first angle (hereinafter referred to as the second angle) that is the rotation angle of the power transmission arm 29. A pair of limit switches (switch means) 30 and 30 that are sometimes turned on or off by the cam portion 27 to change the state are arranged. As will be described later, each limit switch 30 rotates to the first angle after the output shaft 26 exceeds the second angle that the power transmission arm 29 is smaller than the first angle, and the power transmission arm 29. Even at the position where the rear end portion 29d collides with the stopper 13, the on or off operation state is maintained. That is, the stopper 13 is disposed at a position where the on / off operation of the limit switch 30 is maintained.

  Further, as shown in FIGS. 3, 6 and 7, the lower end 26d of the output shaft 26 exposed to the outside from the bottom wall 11c of the case 11 is used to lock or unlock a steering shaft (not shown). A cam (output member) 31 is fastened and fixed via a screw 32.

  According to the steering lock driving device 10 of the embodiment described above, when a current is supplied to an armature coil (not shown) of the motor 20, the worm 22 of the armature shaft 21 rotates and the output gear 25 via the reduction gear 23. Rotates. A pair of rubber dampers 28 and 28 rotate together with the rotation of the output gear 25. By the rotation of the pair of rubber dampers 28, 28, the power transmission arm 29 in which a plate-like bent portion 29 b is held between the pair of rubber dampers 28, 28 rotates. The output shaft 26 fixed to the power transmission arm 29 is rotated by the rotation of the power transmission arm 29.

  When the cam portion 27 formed integrally with the output shaft 26 is rotated by the rotation of the output shaft 26, the cam portion 27 is in an off state (OFF) arranged at the corner portion in the gear housing portion 11b of the case 11. The operation lever 30a of one limit switch 30 is pushed and the limit switch 30 is turned on (ON). When the limit switch 30 is turned on, a position detection signal is output, the energization of the motor 20 to the armature is interrupted, and the current supplied to the armature coil is interrupted. However, the armature of the motor 20 continues to rotate due to inertia, and an electromagnetic braking current flows through the armature coil.

  When the output shaft 26 further rotates due to the rotation due to the inertia of the armature, the rear end portion 29d of the power transmission arm 29 is brought into contact with and locked to the stopper 13 of the cover 12, and at that time, the output shaft 26 and the power transmission arm 29 The rotation is stopped. The stop position of the output shaft 26 is a position where the limit switch 30 can be kept on by the cam portion 27. As described above, the radial length of the output gear 25 of the rear end portion 29d of the power transmission arm 29 is longer than the radial length of the output gear 25 of the front end portion 29a. Although 29 a does not abut on the stopper 13 of the cover 12, the rear end portion 29 d of the power transmission arm 29 abuts on the stopper 13 of the cover 12.

  Even if the rear end portion 29d of the power transmission arm 29 is stopped by being locked by the stopper 13 of the cover 12, the armature continues to rotate further due to inertia, and therefore the reduction gear 23 and the output gear 25 continue to rotate further. However, since the power transmission arm 29 is stopped, one rubber damper 28 of the pair of rubber dampers 28, 28 is pressed and compressed by the bent portion 29 b of the power transmission arm 29. Then, the kinetic energy of the armature is converted into elastic energy and thermal energy of the rubber damper 28, and the rotation of the armature is eventually stopped. Thereby, rotation of the reduction gear 23 and the output gear 25 stops.

  More specifically, in FIG. 8, when the cam portion 27 rotates and its central portion 27C reaches position A, one end portion 27a of the cam portion 27 presses the operation lever 30a1 of the limit switch 30a, and the limit switch 30a is turned on. When the cam portion 27 further rotates and the central portion 27C reaches the position B, the power transmission arm 29 collides with the stopper 13 at the same time. As a result, the rotation of the cam portion 27 stops.

When the motor 20 is energized again, as a result, the cam portion 27 rotates in the reverse direction from the state where the central portion 27C of the cam portion 27 is located at the position B, and the central portion 27C of the cam portion 27 is moved to the position A. When reaching, one end portion 27a of the cam portion 27 does not press the operation lever 30a1 of the limit switch 30a, and the limit switch 30a is turned off. When the cam portion 27 further rotates in the reverse direction and the central portion 27C of the cam portion 27 reaches the position D, the other end portion 27b of the cam portion 27 presses the operation lever 30b1 of the limit switch 30b, and the limit switch 30b Turns on. At this time, the limit switch 30b generates a position detection signal, and as a result, the power supply to the motor 20 is cut off. However, due to the inertia of the armature of the motor 20, the cam portion 27 continues to rotate further in the reverse direction. When the central portion 27C of the cam portion 27 reaches the position E, the power transmission arm 29 collides with the stopper 13 at the same time, and as a result, the rotation of the cam portion 27 stops. Even when the position D reaches the position E, the limit switch 30b is maintained in the ON state.

That is, when the cam portion 27 rotates by the first angle θ1 from the position B to the position E, the power transmission arm 29 collides with the stopper 13, and the cam portion 27 and the output shaft 26 on which the cam portion 27 is formed rotate. Is stopped. When the cam portion 27 rotates by a second angle θ2 smaller than the first angle θ1 and the cam portion 27 rotates from the position B to the position D, the limit switch 30b that has been in the off state is turned on.

The same applies to the case where the cam portion 27 rotates toward the position B from the state where the central portion 27C of the cam portion 27 is located at the position E by energizing the motor 20 again.

  As described above, the pair of rubber dampers 28 and 28 are accommodated in the damper accommodating portion 25 b formed in a fan-like shape on the upper surface of the output gear 25, and the pair of rubber dampers 28 and 28 includes the front end portion 29 a of the power transmission arm 29. A plate-like bent portion 29b is clamped, the power transmission arm 29 is fitted and fixed to the distal end 26a of the output shaft 26, and the output gear 25 is rotatably supported on the body portion 26b of the output shaft 26 to transmit power. The stopper 13 that collides with the cover 12 when the arm 29 rotates by a predetermined first angle is formed integrally with the cover 12, so that the stop position of the power transmission arm 29 and the output shaft 26 depends on the position of the stopper 13 of the cover 12. It is determined uniquely. That is, the position is determined regardless of the magnitude of the inertia energy of the armature of the motor 20. Further, since the pair of rubber dampers 28 and 28 are accommodated in the damper accommodating portion 25b of the output gear 25, the damper accommodating portion 25b in which the rubber damper 28 is accommodated can be set at a wide angle, and a sufficient volume ( It is possible to use a rubber damper 28 having a circumferential length).

  Further, since the plate-like bent portion 29b sandwiched between the pair of rubber dampers 28 and 28 is formed at the front end portion 29a of the power transmission arm 29, the front end of the power transmission arm 29 is maintained even when the output gear 25 continues to rotate. The rubber damper 28 can be compressed by the plate-like bent portion 29b of the portion 29a so that the impact force can be reliably absorbed, and damage to the power transmission arm 29 and the stopper 13 of the cover 12 can be reliably prevented. Further, a length of the rear end portion 29b of the power transmission arm 29 in the radial direction of the output gear 25 is longer than that of the front end portion 29a in the radial direction of the output gear 25, Therefore, the rear end portion 29d of the power transmission arm 29 is brought into contact with and locked to the stopper 13 of the cover 12, so that the power transmission arm 29 can be surely stopped.

  In addition, the cam portion 27 is integrally formed with the output shaft 26 by insert molding or the like, and the output shaft 26 is more than the predetermined first angle of the rotation amount of the power transmission arm 29 in the gear housing portion 11 b of the case 11. A pair of limit switches 30, 30 that are turned on or off by the cam portion 27 when rotated by a small second angle are arranged, and the position where the limit switches 30, 30 are maintained, that is, the power transmission arm 29 is in the first position. Since the stopper 13 is disposed at a position rotated by an angle of 1, the phenomenon that the cam portion 27 gets over each limit switch 30 can be reliably prevented, and each limit switch 30 can be reliably turned on or off by the cam portion 27. Can be turned off.

  Further, the limit switch 30 is turned on or off even when the output shaft 26 rotates to the first angle after exceeding the second angle smaller than the first angle of the rotation amount of the power transmission arm 29. Since the state of the off operation is maintained, the seesaw type switch can be reliably turned on or off even if a seesaw type switch is used for the limit switch 30.

  FIG. 9 is an exploded perspective view around the output shaft of a steering lock device according to another embodiment of the present invention.

  In a power transmission arm (power transmission member) 29 ′ used in the steering lock device of the other embodiment, a plate-like bent portion 29 b formed to be bent below the front end portion 29 a is held between a pair of rubber dampers 28 and 28. In addition, the front end portion 29 a (the upper side of the bent portion 29 b) is a stopper portion that is brought into contact with and locked to the stopper 13 of the cover 12. In addition, since the other structure is the same as that of the said embodiment, the same code | symbol is attached | subjected to the same component and detailed description is abbreviate | omitted.

  In this other embodiment, since the front end portion 29a of the power transmission arm 29 'is a stopper portion that is brought into contact with and locked to the stopper 13 of the cover 12, the rear end portion 29d of the power transmission arm 29 of the above-described embodiment. Can be shortened in the radial direction of the output gear 25, and the power transmission arm 29 'can be downsized. In addition, the same effects as the power transmission arm 29 of the above embodiment can be achieved.

  In addition, according to each said embodiment, although the damper was a rubber damper, of course, a damper is not restricted to rubber | gum. In addition, the power transmission arm 29 does not necessarily have a bent portion sandwiched between the pair of rubber dampers, and is disposed between the pair of rubber dampers. When the output gear rotates and as a result, the rubber damper rotates, What is necessary is just to be in contact with the rubber damper and pressed by the rubber damper.

It is sectional drawing of the principal part which shows the steering lock apparatus of embodiment of this invention. It is sectional drawing which follows the XX line in FIG. FIG. 3 is an exploded perspective view around an output shaft of the steering lock driving device. It is a top view in a case used for the above-mentioned steering lock drive device. It is the perspective view which looked at the cover which obstruct | occludes the said case from the inner side. It is a rear view of the steering lock driving device. It is a bottom view of the steering lock driving device. It is a schematic diagram for demonstrating the angle which the rotation angle of a cam part and the state of a limit switch change. It is a disassembled perspective view of the periphery of the output shaft of the steering lock drive device of other embodiments of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Steering lock drive device 11 Case 11a Motor accommodating part 11b Gear accommodating part 12 Cover 13 Stopper 20 Motor 21 Armature shaft (drive shaft)
23 Reduction gear (gear)
25 Output gear (gear)
25b Damper accommodating part (damper mounting part)
26 Output shaft (shaft)
26a tip 26b tip 27 cam portion 28, 28 Rubber damper (damper)
29, 29 'Power transmission arm (power transmission member)
29a front end portion 29b plate-like bent portion 29c round hole (midway portion)
29d Rear end (stopper)
30 Limit switch (switch means)
31 Output cam (output member)

Claims (7)

A case having a cover;
A motor having an armature and disposed in the case;
A gear rotated by the armature of the motor;
A damper disposed in a damper housing formed in the gear;
A power transmission member that selectively contacts the damper and is driven by the contacted damper;
A shaft fixed to the power transmission member, formed separately from the gear and rotatably supporting the gear; and a shaft rotatably supported by the case;
An actuator comprising a stopper formed on a cover of the case and colliding with the power transmission member when the power transmission member rotates by a predetermined first angle. The damper includes a pair of damper pieces, and the power transmission member has a front end portion in which a plate-like bent portion sandwiched between the pair of dampers is formed, and a radial direction longer than a radial length of the front end portion. The actuator according to claim 1, wherein a rear end portion that is formed so as to be able to collide with the stopper is formed. A cam portion is integrally formed on the shaft, and the case causes the cam portion to move from the first state to the second state when the shaft rotates a second angle smaller than the first angle. The actuator according to claim 1, wherein switch means that changes state is arranged. A case having a cover for covering the motor housing portion and the gear housing portion, a motor housed in the case motor housing portion, and a gear housing portion of the case that is rotatably housed, and a reduction gear is provided by a drive shaft of the motor. An output gear that is rotationally driven through, an output shaft that is rotatably supported by the case and rotated by the rotation of the output gear, and an output that is attached to the output shaft and used to lock and unlock the steering shaft In a steering lock drive device comprising a member,
The damper is accommodated in a damper accommodating portion formed in the output gear, the front end portion of the power transmission member is locked between the dampers, the power transmission member is fixed to the output shaft, and the output shaft A steering lock driving device characterized in that a stopper for stopping the output gear after rotating the power transmission member by a predetermined angle is provided on the cover while the output gear is rotatably supported.   5. The steering lock driving device according to claim 4, wherein a plate-like bent portion sandwiched between the pair of dampers is formed at a front end portion of the power transmission member, and a radius of a rear end portion of the power transmission member. A steering lock driving device characterized in that a length in a direction is formed longer than a length in a radial direction of the front end portion to form a stopper portion locked to the stopper.   5. The steering lock driving device according to claim 4, wherein the damper includes a pair of damper pieces, and a cam portion is formed integrally with the output shaft, and the output shaft is connected to the gear housing portion of the case. A steering lock driving device, comprising: a switch means that is turned on or off by the cam portion when the member rotates by an angle smaller than the predetermined angle. The steering lock driving device according to claim 4,
The switch means maintains the ON or OFF operation state even when the output shaft rotates to the predetermined angle after exceeding an angle smaller than the predetermined angle of the rotation amount of the power transmission member. A steering lock drive device characterized by that.

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