JP5503452B2 - Unlocking actuator - Google Patents

Description

  The present invention relates to an unlocking actuator that can be unlocked by driving a motor.

  A lock mechanism that keeps the glove box closed is attached to the glove box of the vehicle. For example, Patent Document 1 discloses a lock mechanism that holds a lid body provided in a vehicle body in a closed position. The lock mechanism includes a shaft that is disposed so as to freely advance and retract, a spring that urges the shaft, and a motor that moves the shaft by driving. The shaft is moved by a spring or a motor, and the movement is stopped by the contact between the protrusion and the stopper body.

JP-A-4-302680

  In Patent Document 1, when the motor is driven, the shaft advances, and the advance is stopped by contact between the first protrusion and the stop body. Further, when the driving of the motor stops, the shaft retracts due to the bias of the spring, and the retracting is stopped by the contact between the second protrusion and the stop body. It is preferable that the hitting sound generated when the protrusion and the stopper body come into contact with each other is small.

  The present invention has been made in view of such a problem, and an object of the present invention is to provide an unlocking actuator that reduces a hitting sound generated during driving.

  In order to solve the above-described problem, an unlocking actuator according to an aspect of the present invention is an unlocking actuator that can be unlocked, and includes a first housing and a first housing coupled to the first housing. A second housing that forms an outer shape; a motor that generates a driving force; a transmission member that transmits the driving force of the motor; a movable member that is movable by the driving force transmitted by the transmission member and is unlocked by the movement; And a stop portion for stopping the movement of the movable member. The transmission member includes a gear having a first rotation shaft portion and a second rotation shaft portion that are located on the same axis and project in opposite directions. The first housing has a first support portion that rotatably supports the first rotation shaft portion. The second housing has a second support portion that rotatably supports the second rotation shaft portion. In such an unlocking actuator, the first rotation shaft portion and the first support portion constitute a damper that generates a resistance torque against the rotation of the gear.

  When the moving movable member hits the stop portion, a hitting sound is generated. According to this aspect, since the damper imparts resistance torque to the gear, the impact when the movable member collides with the stop portion can be softened by the damper, and the hitting sound can be reduced.

  According to the present invention, it is possible to reduce the hitting sound generated during driving.

It is a figure which shows the glove box provided in the vehicle interior. It is a disassembled perspective view of the unlocking actuator according to the embodiment. It is a disassembled perspective view of the unlocking actuator according to the embodiment. It is a side view of the actuator for lock release concerning an embodiment. FIG. 5 is a cross-sectional view taken along line AA shown in FIG. 4 of the unlocking actuator according to the embodiment. FIG. 5 is a cross-sectional view taken along line B-B shown in FIG. 4 of the unlocking actuator according to the embodiment. It is sectional drawing of the actuator for lock release which concerns on embodiment. It is a figure which shows the internal structure seen from the cross section of the actuator for lock release which concerns on embodiment. It is sectional drawing of the actuator for lock release which concerns on embodiment. It is a figure which shows the internal structure seen from the cross section of the actuator for lock release which concerns on embodiment. It is a figure which shows the modification of the actuator for lock release which concerns on embodiment. It is a figure which shows the modification of the actuator for lock release which concerns on embodiment. It is a side view of the actuator for lock release concerning an embodiment. It is sectional drawing of line segment CC shown in FIG. 13 of the actuator for lock release which concerns on embodiment. It is sectional drawing of line segment DD shown in FIG. 13 of the actuator for lock release which concerns on embodiment. It is sectional drawing of line segment DD shown in FIG. 13 of the actuator for lock release which concerns on embodiment.

  FIG. 1 shows a glove box 10 provided in a vehicle interior. The unlocking actuator (not shown) according to the embodiment is attached to, for example, the glove box 10 and releases the lock of a lock mechanism (not shown) that keeps the glove box 10 in a closed state.

  The glove box 10 is provided with an operation switch 12, and the operation switch 12 is connected to an unlocking actuator via a control unit (not shown). When the user presses the operation switch 12, a command signal is sent to the control unit, and when the command signal is acquired, the control unit drives the unlocking actuator for a predetermined time, and the unlocking actuator unlocks the lock mechanism. . When a predetermined time elapses after receiving the command signal, the control unit stops supplying drive current to the unlocking actuator.

  2 and 3 are exploded perspective views of the unlocking actuator 100 according to the embodiment. Here, the same or equivalent components and members shown in the drawings are denoted by the same reference numerals, and repeated description thereof is omitted as appropriate. The unlocking actuator 100 includes a first housing 20, a second housing 30, a motor 40, a first gear 50, a winding spring 60, a coil spring 65, a first movable member 70, a first shock absorbing member 78, and a second movable member 80. The second gear 90 and the second shock absorbing member 98 are provided.

  The first housing 20 is combined with the second housing 30 to form the outer shape of the unlocking actuator 100. In the housing space formed inside the first housing 20 and the second housing 30, the motor 40, the first gear 50, the winding spring 60, the coil spring 65, the first movable member 70, the first shock absorbing member 78, and the second movable The member 80, the second gear 90, and the second shock absorbing member 98 are accommodated.

  The first housing 20 has an outer peripheral wall portion 23 that is formed as a housing space for the first gear 50. An annular wall portion 25 is formed inside the outer peripheral wall portion 23. An arc-shaped first locking portion 24 is formed further inside the annular wall portion 25. The first end 62 of the winding spring 60 is locked to the first locking portion 24. A first support portion 22 is formed further inside the first locking portion 24. The first support portion 22 functions as a bearing for the first rotation shaft portion 52 of the first gear 50.

  The motor 40 includes a motor main body 42, a motor shaft 44, a plus terminal 46, and a minus terminal 48. The motor 40 is housed in a motor housing space 95 a formed in the first housing 20 and a motor housing space 95 b formed in the second housing 30. The plus terminal 46 and the minus terminal 48 are arranged in an opening space formed by the first terminal groove 28 and the second terminal groove 39 and are connected to the control unit. The motor shaft 44 is inserted and connected to the second gear 90.

  The second gear 90 is formed in a rod shape, has a helical second tooth portion 92 on the outer periphery, and is arranged coaxially with the motor shaft 44. The second gear 90 is housed in a second gear housing space 97 a formed in the first housing 20 and a second gear housing space 97 b formed in the second housing 30. The second gear 90 rotates in conjunction with the rotation of the motor shaft 44. The second tooth portion 92 meshes with the first tooth portion 56 of the first gear 50.

  The first gear 50 is formed in a disc shape, and includes a substrate portion 54, a first rotation shaft portion 52, a second rotation shaft portion 51, an eccentric ring 53, an annular recess 55, a first tooth portion 56, and a second locking portion. Part 58. The first gear 50 is housed in a first gear housing space 96 a formed in the first housing 20 and a first gear housing space 96 b formed in the second housing 30. The substrate portion 54 has a disk shape, and a first tooth portion 56 is formed on the outer periphery of the substrate portion 54. The first rotation shaft portion 52 is formed to protrude from one end surface of the substrate portion 54, and the second rotation shaft portion 51 is formed to protrude from the other end surface of the substrate portion 54. The first rotation shaft portion 52 and the second rotation shaft portion 51 are located coaxially and protrude in opposite directions.

  The first rotation shaft portion 52 has an annular recess 55 formed so as to cut out the inside of the first rotation shaft portion 52 in an annular shape. An arc-shaped second locking portion 58 is formed on the radially outer side of the first rotation shaft portion 52. The second locking portion 58 locks the second end portion 64 of the winding spring 60. The first rotation shaft portion 52 is rotatably supported by the first support portion 22 of the first housing 20. An annular convex portion 27 is formed inside the first support portion 22. The annular convex portion 27 is erected from the substrate portion 54 inside the first support portion 22. A cylindrical portion 21 is formed at the center of the annular convex portion 27. At the time of assembly, the annular convex portion 27 and the annular concave portion 55 are fitted to each other. Alternatively, an annular convex portion may be formed on the first rotation shaft portion 52 and an annular concave portion may be formed on the first support portion 22. By forming the annular convex portion 27 and the annular concave portion 55 on the rotating shaft and the bearing, the damper can be easily formed in a narrow space.

  The first gear 50 is accommodated inside the outer peripheral wall portion 23 of the first housing 20. The first gear portion 56 of the first gear 50 is located between the outer peripheral wall portion 23 and the annular wall portion 25.

  An eccentric ring 53 that is eccentric from the axis of the second rotation shaft portion 51 is formed around the second rotation shaft portion 51. The second rotation shaft portion 51 is rotatably supported by the second support portion 32 of the second housing 30. The first gear 50 and the second gear 90 function as a transmission member that transmits the driving force of the motor 40 and transmits the driving force to the first movable member 70.

  The first movable member 70 is movable by the driving force transmitted by the transmission members of the first gear 50 and the second gear 90. The first movable member 70 is disposed in the first sliding groove 34 of the second housing 30. The first movable member main body 73 of the first movable member 70 is formed with a penetrating hole 72 penetrating therethrough. The loose fitting hole 72 is a slit formed with the same width as the diameter of the second rotation shaft portion 51, and the second rotation shaft portion 51 is inserted therein.

  At one end of the first movable member 70, a plate-shaped receiving portion 76 extending along the penetration direction of the loose fitting hole 72 is formed. At the time of assembly, the receiving portion 76 contacts the outer periphery of the eccentric ring 53, driving force is transmitted from the eccentric ring 53, and the first movable member 70 is displaced.

  At the other end of the first movable member 70, a first sliding wall portion 74 is formed that is cut away in an oblique direction with respect to the direction of penetration of the loose fitting hole 72. A first shock absorbing member 78 is fixed to the other end surface 79 of the first movable member 70.

  One end of the second movable member 80 is disposed in the second sliding groove 36, and the other end is disposed so as to project from the opening 26. The second movable member 80 is displaced in conjunction with the first movable member 70, and appears in the external space from the opening 26 formed in the first housing 20. The lock piece 86 that is one end of the second movable member 80 can project from the opening 26 to the external space. When the lock piece 86 protrudes into the external space, the lock piece 86 comes into contact with a lock mechanism provided outside to release the lock. The second movable member 80 is formed in a prismatic shape, and a second sliding wall portion 82 is formed by being cut out in an oblique direction with respect to each surface of the prism. The second sliding wall 82 abuts on the first sliding wall 74 during assembly.

  A spring groove 84 is formed in the second movable member 80, and the coil spring 65 is accommodated in the spring groove 84. The coil spring 65 has one end fixed to the second movable member 80 and the other end fixed to the spring receiving portion 29 of the first housing 20. The coil spring 65 biases the second movable member 80 in a direction to push it into the accommodation space.

  FIG. 4 is a side view of the unlocking actuator 100 according to the embodiment. FIG. 5 is a sectional view taken along line AA shown in FIG. 4 of the unlocking actuator 100 according to the embodiment.

  As shown in FIG. 5, the second gear 90 and the first gear 50 are meshed, and the first gear 50 is rotated by the rotation of the second gear 90. When the first gear 50 rotates by a predetermined angle, the eccentric ring 53 comes into contact with the second shock absorbing member 98. The second shock absorbing member 98 is disposed on the rotation locus of the eccentric ring 53. As shown in FIGS. 5 and 6, the winding spring 60 is disposed between the first gear 50 and the first housing 20.

  FIG. 6 is a sectional view taken along line B-B shown in FIG. 4 of the unlocking actuator 100 according to the embodiment. As shown in FIG. 6, when the first gear 50 rotates, the outer peripheral portion of the eccentric ring 53 at a position far away from the axis of the first gear 50 hits the receiving portion 76. As a result, the first movable member 70 is displaced in a predetermined direction (left direction in the drawing) perpendicular to the rotation axis. Then, since the first sliding wall portion 74 also moves in a predetermined direction, the second sliding wall portion 82 is pushed out by the first sliding wall portion 74 and the second movable member 80 projects from the opening 26. At this time, the lock piece 86 of the second movable member 80 unlocks the lock mechanism. When the motor 40 stops driving after the lock is released, the first movable member 70 is biased by the winding spring 60 and the coil spring 65 to move toward the initial position, stops against the stop wall 38, and is hit by an impact. Sound is generated. The stop wall 38 functions as a stop portion that stops the movement of the first movable member 70 over a predetermined distance.

  An annular concave portion 55 formed inside the first rotating shaft portion 52 and an annular convex portion 27 formed inside the first support portion 22 are fitted. The gap between the annular concave portion 55 and the annular convex portion 27 is filled with a lubricant such as grease, and the first rotation shaft portion 52 and the first support portion 22 provide resistance torque with respect to the rotation of the first gear 50. Configure the generated damper. Although a hitting sound is generated by an impact when the first gear 50 rotated by the motor 40 and the winding spring 60 is stopped, the impact can be softened and the hitting sound can be reduced by forming the damper. This sound is generated when the motor 40 is driven and the second movable member 80 is stopped at the unlocked position, and when each member returns to the initial position and stops after the unlocking. Furthermore, by forming a damper with the gear and the first housing 20, the damper can be formed without increasing the number of parts.

  The first movable member 70 is located between the first gear 50 and the second housing 30. The accommodation space formed by the first housing 20 and the second housing 30 is divided into a first accommodation space and a second accommodation space by a plane including the end face of the substrate portion 54 with respect to the first gear 50. The first housing space is a space formed by the first housing 20 from the first gear 50, and the second housing space is a space formed by the second housing 30 from the first gear 50. At this time, the damper is located in the first accommodation space, and the first movable member 70 is located in the second accommodation space. Thereby, the axial width of the damper can be ensured while reducing the size of the unlocking actuator 100, and the resistance torque generated by the damper can be sufficiently obtained.

  FIG. 7 is a sectional view of the unlocking actuator 100 according to the embodiment. FIG. 8 shows an internal configuration from a cross section of the unlocking actuator 100 according to the embodiment. 7 and 8 show a state in which the motor 40 is not driven, and shows the initial positions of the respective members. FIG. 7 is a cross-sectional view including the first housing 20 in the first housing space, and FIG. 8 is an internal configuration diagram seen from a cross section of the second housing space.

  As shown in FIG. 7, the winding spring 60 is located inside the annular wall portion 25 and urges the first gear 50 that has been rotationally displaced to return to the initial position. The first end 62 of the winding spring 60 is locked to the first locking portion 24 of the first gear 50, and the second end 64 is locked to the second locking portion 58 of the first housing 20. Here, the annular convex portion 27 and the annular concave portion 55 are located inside the winding spring 60. Thereby, a damper can be formed in the space inside the winding spring 60, and the space inside the winding spring 60 can be used effectively.

  At the initial position shown in FIG. 7, the second locking portion 58 of the first gear 50 is rotationally displaced, so that the first locking portion 24 receives the initial load of the winding spring 60. That is, when the first gear 50 is rotationally displaced and then returns to the initial position, the first locking portion 24 functions as a stop portion that stops the first gear 50.

  In the initial position shown in FIG. 8, the center of the eccentric ring 53 is located away from the receiving portion 76. When the motor 40 is driven, the first gear 50 rotates clockwise as viewed from the second housing 30 side, the center of the eccentric ring 53 moves in a predetermined direction approaching the receiving portion 76, and accordingly the outer periphery of the eccentric ring 53 is moved. The receiving part 76 is pushed in a predetermined direction.

  FIG. 9 is a cross-sectional view of the unlocking actuator 100 according to the embodiment. FIG. 10 shows an internal configuration from a cross section of the unlocking actuator 100 according to the embodiment. 9 and 10 show a state where the motor 40 is driven and unlocked. FIG. 9 is a cross-sectional view including the first housing 20 in the first housing space, and FIG. 10 is an internal configuration diagram seen from the cross section of the second housing space.

  In the unlocking position shown in FIG. 9 with respect to the initial position shown in FIG. 7, the first gear 50 is rotated about 180 degrees clockwise as viewed from the second housing 30 side. As shown in FIG. 10, the center of the eccentric ring 53 moves toward the receiving portion 76 by the rotation of the first gear 50, and the first movable member 70 moves in a predetermined direction. When the first movable member 70 moves in a predetermined direction, the first sliding wall portion 74 shown in FIG. 6 pushes the second sliding wall portion 82 and pushes the second movable member 80 in the unlocking direction. The lock is released by the movement of the movable member 80.

  As shown in FIG. 10, the eccentric ring 53 abuts on the second shock absorbing member 98 to limit the rotational displacement of the first gear 50. By stopping the rotation of the first gear 50 by the second shock absorbing member 98, the control of the control unit can be a simple configuration in which the motor 40 is driven for a predetermined time when a command signal is received.

  When the driving of the motor 40 is stopped, the first gear 50 returns to the initial rotational position by the urging force of the winding spring 60. The hitting sound is also generated when returning to the initial position. For example, a hitting sound is generated by the contact between the second end portion 64 of the winding spring 60 and the first locking portion 24 or the contact between the first shock absorbing member 78 and the stop wall 38. This hitting sound can also be reduced by the damper.

  11 and 12 show a modification of the unlocking actuator according to the embodiment. The unlocking actuator 200 includes a first housing 120, a second housing 130, a motor 140, a first gear 150, a movable member 170, an impact absorbing member 178, and a second gear 190.

  The first housing 120 is combined with the second housing 130 to form the outer shape of the unlocking actuator 200. The motor 140, the first gear 150, the movable member 170, the shock absorbing member 178, and the second gear 190 are accommodated in the accommodating space formed inside the first housing 120 and the second housing 130.

  The first housing 120 has an annular first support portion 122. The first support portion 122 functions as a bearing for the first rotation shaft portion 152 of the first gear 150, and an annular recess 121 is formed inside.

  The motor 140 includes a motor main body 142, a motor shaft 144, a plus terminal 146, and a minus terminal 148. The motor 140 is housed in a motor housing space 195 a formed in the first housing 120 and a motor housing space 195 b formed in the second housing 130. The plus terminal 146 and the minus terminal 148 are connected to a control unit (not shown). The motor shaft 144 is inserted and connected to the second gear 190.

  The second gear 190 has a spiral second tooth portion 192 on the outer periphery, and is arranged coaxially with the motor shaft 144. The second gear 190 is housed in a second gear housing space 197 a formed in the first housing 120 and a second gear housing space 197 b formed in the second housing 130. The second gear 190 rotates in conjunction with the rotation of the motor shaft 144. The second tooth portion 192 is engaged with and connected to the first tooth portion 156 of the first gear 150.

  The first gear 150 includes a substrate portion 154, a first rotation shaft portion 152, a second rotation shaft portion 151, an annular convex portion 153, a first tooth portion 156, and a pinion gear 158. The first gear 150 is housed in a first gear housing space 196 a formed in the first housing 120 and a first gear housing space 196 b formed in the second housing 130. The substrate portion 154 has a disk shape, and a first tooth portion 156 is formed on the outer periphery of the substrate portion 154. The first rotation shaft portion 152 is formed to protrude from one end surface of the substrate portion 154, and the second rotation shaft portion 151 is formed to protrude from the other end surface of the substrate portion 154. The first rotation shaft portion 152 and the second rotation shaft portion 151 are located on the same axis and protrude in opposite directions.

  The first rotation shaft portion 152 has an annular convex portion 153 on the inner side, and a cylindrical portion 155 at the center of the annular convex portion 153. The first rotation shaft portion 152 is rotatably supported by the first support portion 122 of the first housing 120. At the time of assembly, the annular recess 121 and the annular projection 153 are fitted together. Note that an annular recess may be formed in the first rotation shaft portion 152, and an annular protrusion may be formed in the first support portion 122. By forming the annular concave portion 121 and the annular convex portion 153 in the rotating shaft and the bearing, the damper can be easily formed.

  A pinion gear 158 having a smaller diameter than the first tooth portion 156 is formed around the second rotation shaft portion 151. The second rotation shaft portion 151 is rotatably supported by a second support portion (not shown) of the second housing 130. The first gear 150 and the second gear 190 function as transmission members that transmit the driving force of the motor 140 and transmit the driving force to the movable member 170.

  The movable member 170 is movable by the driving force transmitted by the transmission members of the first gear 150 and the second gear 190. The movable member 170 is disposed in the second housing 130 and can project from the opening formed in the second housing 130 to the external space. When the movable member 170 protrudes to the outside, the movable member 170 comes into contact with a lock mechanism provided outside to release the lock.

  A rack gear 176 is formed on the side surface of the movable member 170. The rack gear 176 meshes with the pinion gear 158, and the driving force is transmitted from the pinion gear 158. That is, the movable member 170 advances and retreats according to the rotation of the first gear 150. An impact absorbing member 178 is fixed to one end of the movable member 170. The shock absorbing member 178 contacts the stop wall 138 when the movable member 170 returns to the initial position. The shock absorbing member 178 has elasticity.

  FIG. 13 is a side view of the unlocking actuator 200 according to the embodiment. FIG. 14 shows the cross section of the line segment CC shown in FIG. 13, and FIG. 15 shows the cross section of the line segment DD. FIG. 14: shows CC sectional drawing of the actuator 200 for unlocking which concerns on embodiment. FIG. 15 shows a DD cross-sectional view of the unlocking actuator 200 according to the embodiment. FIG. 15 shows a state where the motor 140 is not driven and each member is in the initial position.

  As shown in FIG. 14, the second gear 190 and the first gear 150 are engaged with each other, and the first gear 150 is rotated by the rotation of the second gear 190. The annular convex portion 153 and the annular concave portion 121 are fitted to each other, and the gap between the annular convex portion 153 and the annular concave portion 121 is filled with a lubricant such as grease.

  As shown in FIG. 14, the movable member 170 is located between the first gear 150 and the second housing 130. The accommodation space formed by the first housing 120 and the second housing 130 is divided into a first accommodation space and a second accommodation space based on the first gear 150. The first housing space is a space formed by the first housing 120 from the first gear 150, and the second housing space is a space formed by the second housing 130 from the first gear 150. At this time, the damper is located in the first accommodation space, and the movable member 170 is located in the second accommodation space. Thereby, the axial width of the damper can be ensured while reducing the size of the unlocking actuator 200, and the resistance torque generated by the damper can be sufficiently obtained.

  As shown in FIG. 15, the first end face 178 b of the shock absorbing member 178 is in contact with the stop wall 138 at the initial position. In addition, the movable member 170 is almost housed in the second housing space.

  When the user presses the operation switch, the control unit drives the motor 140. The second gear 190 and the first gear 150 rotate according to the driving of the motor 140, the driving force is transmitted to the movable member 170, and the movable member 170 moves in the first direction that projects into the external space. The lock is released by the movable member 170 protruding to the external space.

  FIG. 16 is a DD cross-sectional view of the unlocking actuator 200 according to the embodiment. FIG. 16 shows a state in which the motor is driven and each member is in the unlocked position.

  The movable member 170 protrudes to the external space by driving the motor 140, and the movement of the movable member 170 in the first direction is stopped by the second end surface 178a of the shock absorbing member 178 being caught by the protruding portion 136 of the second housing 130. The A hitting sound is generated by the contact between the second end surface 178a and the protrusion 136, but a resistance torque is applied to the rotation of the first gear 150 by the damper, and the speed of the movable member 170 is reduced to reduce the hitting sound. Can do.

  The controller controls the motor 140 to rotate backward for a predetermined time after driving the motor 140 for a predetermined time. That is, the movable member 170 is advanced and retracted by the motor 140. When the motor 140 starts to reversely rotate, the movable member 170 is drawn into the second accommodation space and returns to the initial position. At this time, the first end surface 178b of the shock absorbing member 178 and the stop wall 138 come into contact with each other, and a hitting sound is generated. This hitting sound can be reduced by the damper.

  The present invention is not limited to the above-described embodiments, and various modifications such as design changes can be added to the embodiments based on the knowledge of those skilled in the art. Embodiments described may also be included within the scope of the present invention.

  Although the embodiment has been described in which the unlocking actuator 100 unlocks the lock mechanism, the unlocking actuator 100 may directly lock the locked body. For example, the biasing direction of the spring with respect to the movable member in the unlocking actuator 100 is reversed, and the rotation direction of the motor is reversed. In the initial state, the movable member is urged so as to protrude to the external space and is locked to the locked body. When the motor is driven, the movable member may be drawn into the accommodation space against the spring, and the lock may be released.

  DESCRIPTION OF SYMBOLS 10 Glove box, 12 Operation switch, 20 1st housing, 21 Cylinder part, 22 1st support part, 23 Outer peripheral wall part, 24 1st latching | locking part, 25 Annular wall part, 26 Opening part, 27 Annular convex part, 28 Groove for first terminal, 29 spring receiving portion, 30 second housing, 32 second support portion, 34 first sliding groove, 36 second sliding groove, 37 stopper hole, 38 stop wall, 39 for second terminal Groove, 40 motor, 42 motor main body, 44 motor shaft, 46 plus terminal, 48 minus terminal, 50 first gear, 51 second rotating shaft portion, 52 first rotating shaft portion, 53 eccentric ring, 54 substrate portion , 55 annular recess, 56 first tooth portion, 58 second locking portion, 60 winding spring, 62 first end portion, 64 second end portion, 65 coil spring, 70 first movable member, 72 loose fitting hole, 73 first movable member main body portion, 74 first sliding wall portion, 76 receiving portion, 78 first shock absorbing member, 80 second movable member, 82 second sliding member Wall part, 84 spring groove, 86 lock piece, 90 second gear, 92 second tooth part, 98 second shock absorbing member, 100 unlocking actuator.

Claims (3)

An unlocking actuator that can be unlocked,
A first housing;
A second housing coupled to the first housing to form an outer shape of the unlocking actuator;
A motor that generates driving force;
A transmission member for transmitting the driving force of the motor;
A movable member that is movable by the driving force transmitted by the transmission member and unlocked by the movement;
A stop portion for stopping the movement of the movable member,
The transmission member includes a gear having a first rotation shaft portion and a second rotation shaft portion that protrude coaxially in the opposite direction from the disk-shaped substrate portion ,
The first housing has a first support portion that rotatably supports the first rotation shaft portion,
The second housing has a second support portion that rotatably supports the second rotation shaft portion,
The first rotation shaft portion and the first support portion constitute a damper that generates a resistance torque against the rotation of the gear,
The unlocking actuator according to claim 1, wherein the movable member includes at least a member that is located closer to the second support portion than the substrate portion and moves in a direction orthogonal to the second rotation shaft portion .   2. The unlocking actuator according to claim 1, wherein each of the first rotation shaft portion and the first support portion has one of an annular convex portion and an annular concave portion that are fitted to each other. A winding spring disposed between the gear and the first housing and urged to return the rotationally displaced gear to an initial position;
The unlocking actuator according to claim 2, wherein the annular convex portion and the annular concave portion are located inside the winding spring.

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