WO2018003414A1

WO2018003414A1 - External force absorption device and drive device

Info

Publication number: WO2018003414A1
Application number: PCT/JP2017/020782
Authority: WO
Inventors: 一美古林
Original assignee: 日本電産サンキョー株式会社
Priority date: 2016-06-27
Filing date: 2017-06-05
Publication date: 2018-01-04
Also published as: JP6684666B2; JP2018003852A

Abstract

An external force absorption device which can absorb an external force applied to a driven member, and a drive device are provided. An external force absorption mechanism (9) (the external force absorption device) comprises a driven member (3) which is rotatably supported on a support shaft (35) via a holder (31), a first support member (81) which cannot rotate relative to the support shaft (35), and a second support member (82) which is rotatably supported on the support shaft (35). Further, the external force absorption mechanism (9) also comprises a first biasing member (91) which biases a second support member (82) in one direction (R351) around the support shaft (35), a contact member (85) which restricts rotation of the second support member (82) in one direction (R351) around the support shaft (35), and a second biasing member (92) which is provided between the second support member (82) and the driven member (3). The second biasing member (92) applies to the driven member (3) a biasing force resisting relative rotation of the driven member (3) about the support shaft (35) with respect to the second support member (82).

Description

External force absorbing device and driving device

The present invention relates to an external force absorbing device for absorbing an external force applied to a driven member, and a driving device.

As a drive device provided with a linear drive mechanism, for example, a device has been proposed in which a driving force of a motor is transmitted to a feed screw to cause a carriage to move linearly and a driven member to move linearly (see Patent Document 1). In such a device, the carriage and the driven member (output member) are connected via a connecting shaft. For this reason, the driven member always moves integrally with the same posture with respect to the carriage.

JP 2009-127742 A

However, in the driving apparatus described in Patent Document 1, when an external force is applied to the driven member with respect to the driven member, the external force is transmitted to the carriage or the linear motion mechanism, and the carriage or the linear motion mechanism is damaged. is there.

In view of the above problems, an object of the present invention is to provide an external force absorbing device and a driving device that can absorb an external force applied to a driven member.

In order to solve the above-described problems, an external force absorbing device according to the present invention includes a support shaft, a driven member rotatably supported by the support shaft, and a first support member that is not rotatable with respect to the support shaft. A second support member rotatably supported by the support shaft between the first support member and the driven member, and provided between the first support member and the second support member, A first urging member that urges the second support member in one direction around the support shaft, and abuts on the second support member to restrict rotation of the second support member in one direction around the support shaft. The driven member is provided between the abutting member, the second support member, and the driven member and resists a relative rotation around the support shaft of the driven member with respect to the second support member. And a second urging member to be applied to.

In the present invention, the second support member and the driven member are rotatably supported by the support shaft, and the first is between the first support member and the second support member and between the second support member and the driven member. An urging member and a second urging member are respectively disposed. Therefore, when an external force that rotates the driven member in one direction around the support shaft is applied, the external force can be absorbed by the second biasing member, and the biasing force that resists the external force is second biased. A member is generated. Therefore, it is possible to suppress the driven member from rotating in one direction around the support shaft due to the external force, and when the external force is removed, the posture of the driven member automatically returns to the original state. In addition, when an external force that rotates the driven member in the other direction around the support shaft is applied, the external force can be absorbed by one or both of the first urging member and the second urging member. One or both of the first urging member and the second urging member generate an urging force to resist. For this reason, it is possible to suppress the driven member from rotating in the other direction around the axis due to the external force, and when the external force is removed, the posture of the driven member is automatically restored.

In the present invention, the driven member is rotatably supported by the support shaft via a holder, and the second urging member is provided between the second support member and the holder. It may be adopted. According to this aspect, since the driven member does not directly contact the support shaft or the second urging member, it is possible to suppress the driven member from being damaged.

In the present invention, it is possible to adopt a mode in which the urging force of the second urging member is larger than the urging force of the first urging member. According to this configuration, the driven member can be prevented from tilting around the support shaft due to its own weight or the like. In this case, when an external force that rotates the driven member in the other direction around the support shaft is applied, the driven member and the second support member rotate in the other direction around the support shaft. The first biasing member generates a biasing force that can be absorbed by the biasing member and resists the external force. For this reason, it is possible to suppress the driven member from rotating in the other direction around the axis due to the external force, and when the external force is removed, the posture of the driven member is automatically restored.

In the present invention, the first urging member is a torsion coil spring provided around the support shaft, and the second urging member is a torsion coil spring provided around the support shaft. Can do. According to this aspect, the first urging member and the second urging member can be arranged in a small space.

The external force absorbing device according to the present invention can be mounted on various driving devices. In this case, a linear drive mechanism that linearly moves the support shaft and the first support member in a first direction orthogonal to the axial direction of the support shaft by a driving force from a drive source, and the contact member is A first contact portion that brings the driven member into a first posture by contact with the second support member; and the second support member on one side in the first direction with respect to the first contact portion. And a second contact portion that presses the second member around the support shaft in the other direction to make the driven member a second posture inclined in the other direction around the support shaft from the first posture. be able to. According to this aspect, the driven member can be inclined in the other direction around the support shaft in a state where the driven member is driven to one side in the first direction.

In the present invention, the linear drive mechanism may have a slider link mechanism including a guide groove that linearly guides the first support member in the first direction.

In this case, it is possible to adopt a mode in which the first support member is rotatably supported by the support shaft, and the rotation of the first support member around the support shaft is blocked by the guide groove.

In this invention, it has a flame | frame provided with the opening part opened toward the one side of the said 1st direction, and the said linear drive mechanism protruded the said to-be-driven member from the stand-by position in the said flame | frame, and the said opening part. A mode of moving between the appearance positions can be adopted.

In the present invention, it is possible to adopt a mode having a cover for opening and closing the opening and an opening and closing mechanism for opening and closing the opening by driving the cover with a driving force from the driving source. According to this aspect, the opening can be further opened and closed by the common drive source.

In the present invention, the cover includes a first member provided with a second opening, and a second member supported so as to be movable with respect to the first member and opening and closing the second opening. The opening / closing mechanism moves the second member to a closed position where the second opening is closed when the first member is moved to close the opening. It is possible to adopt a mode in which the second member is moved to an open position where the second opening is opened when the opening is moved to open the second opening. According to this aspect, the second opening can be further opened and closed by the common drive source.

It is the perspective view which looked at the drive device to which the present invention is applied from the other side in the second direction. It is the side view which looked at the drive device shown in FIG. 1 from the one side of the 3rd direction. It is explanatory drawing which shows the structure of the to-be-driven member periphery of the drive device shown in FIG. FIG. 4 is an exploded perspective view of a state in which a guide member, a lever, a first support member, a contact member and the like are removed from the state shown in FIG. 3. It is a disassembled perspective view of the state which removed the 2nd support member etc. from the state shown in FIG. It is explanatory drawing of the tilt drive mechanism of the drive device shown in FIG.

Embodiments for carrying out the present invention will be described with reference to the drawings. In the following description, a direction along the linear movement direction of the driven member 3 is defined as a first direction Y, and two directions intersecting the first direction Y are defined as a second direction Z and a third direction X, respectively. Moreover, Y1 is attached to one side of the first direction Y, Y2 is attached to the other side, Z1 is attached to one side of the second direction Z, Z2 is attached to the other side, and third In the description, X1 is attached to one side of the direction X, and X2 is attached to the other side. In the driving apparatus 1 described below, the driven member 3 moves in the vertical direction. For this reason, the first direction Y is the vertical direction, one side Y1 of the first direction Y is the upward direction, and the other side Y2 is the downward direction. The second direction Z is the front-rear direction of the driven member 3, and the third direction X is the width direction (lateral direction) of the driven member 3.

(overall structure)
1 is a perspective view of a drive device 1 to which the present invention is applied as viewed from the other side Z2 in the second direction Z. FIG. 2 is a view of the drive device 1 shown in FIG. It is a side view. 1 and 2 show a state in which the driven member 3 is in the appearance position P2 outside the frame 2. FIG. In FIGS. 1 and 2, only the outline is schematically shown by a solid line so that the internal structure of the frame 2 can be easily understood.

The driving device 1 shown in FIGS. 1 and 2 includes a frame 2 having an opening 20 that opens toward one side Y1 (upper side) in a first direction Y (vertical direction), and a standby position P1 inside the frame 2. And a driven member 3 arranged at the same position. The driven member 3 is a plate-like member having a thickness direction in the second direction Z, and the frame 2 is box-shaped. In the driving apparatus 1 of this embodiment, the driven member 3 is, for example, a direct-view type display member, and the frame 2 is fixed to a table top or the like.

The drive device 1 has a linear drive mechanism 7 that moves the driven member 3 between an appearance position P2 protruding from the opening 20 and a standby position P1 retracted inward from the opening 20 by the driving force of the drive source 5. is doing. Furthermore, the drive device 1 has a tilt drive mechanism 8 that tilts the distal end side of the driven member 3 that has reached the appearance position P 2 by the drive force of the drive source 5. In this embodiment, the members constituting the linear drive mechanism 7 and the tilt drive mechanism 8 are arranged symmetrically on both sides in the third direction X.

The driving source 5 is a motor 50 such as a stepping motor fixed to the frame 2, and the motor 50 outputs bidirectional rotation. In this embodiment, the motor 50 rotationally drives the rotating member 51 in both directions around the rotation center axis 53, and the rotation of the rotating member 51 is transmitted to the linear drive mechanism 7. In the present embodiment, the rotating member 51 is disposed on both sides in the third direction X. However, the two rotating members 51 are connected by the connecting shaft 52. Therefore, each of the two rotating members 51 can be rotated around the rotation center axis 53 by one motor 50.

(Configuration around driven member 3)
FIG. 3 is an explanatory view showing a configuration around the driven member 3 of the driving apparatus 1 shown in FIG. 1, and is a perspective view of the driven member 3 and the like as viewed from the rear side (the other side Z2 in the second direction Z). . 4 is an exploded perspective view showing a state in which the guide member 721, the lever 75, the first support member 81, the contact member 85 and the like are removed from the state shown in FIG. FIG. 5 is an exploded perspective view of a state where the second support member 82 and the like are further removed from the state shown in FIG.

As shown in FIGS. 3, 4, and 5, a holder 31 extending in the third direction X is fixed to the lower end portion (the other side Y 2 of the second direction Y) of the driven member 3 by a bolt 32. In addition, a shaft hole in which a support shaft 35 extending in the third direction X is fitted is formed in the end portion 310 of the holder 31. Accordingly, the driven member 3 is supported by the support shaft 35 via the holder 31 so as to be rotatable around the support shaft 35 (around the axis L35 of the support shaft 35).

First support members 81 are disposed on both sides in the third direction X with respect to the holder 31. The end of the support shaft 35 is fitted in the shaft hole 811 of the first support member 81, and the first support member 81 is supported by the support shaft 35 so as to be rotatable around the axis L 35. However, since the first support member 81 is prevented from rotating around the support shaft 35 by a guide groove 720 described later, the first support member 81 cannot rotate around the support shaft 35. The first support member 81 includes a first plate portion 816 extending in the first direction Y, and a first plate portion 816 bent from the end of the other side Y2 of the first direction Y to the opposite side of the holder 31. A second plate portion 817 and a third plate portion 818 bent from the end portion of the second plate portion 817 to the other side Y2 in the first direction Y, and the support shaft 35 is fitted to the first plate portion 816. A shaft hole 811 is formed.

A second support member 82 is disposed between the holder 31 and the first support member 81 (between the driven member 3 and the first support member 81). The support shaft 35 is fitted in the shaft hole 821 of the second support member 82, and the second support member 82 is supported by the support shaft 35 so as to be rotatable around the support shaft 35 (around the axis L35). The second support member 82 includes a plate-like main body portion 826, a convex portion 827 provided on the holder 31 side with respect to the main body portion 826, the other side Z2 of the main body portion 826 in the second direction Z, and the first direction. It has a shaft portion 828 that protrudes from the end portion of the other side Y2 of Y to the opposite side of the holder 31. A cylindrical bearing 829 is attached to the shaft portion 828.

Between the first support member 81 and the second support member 82, a first urging member 91 that urges the second support member 82 in one direction R351 around the support shaft 35 is provided. In this embodiment, the first biasing member 91 is a torsion coil spring disposed around the support shaft 35, one end 911 engages with the first support member 81, and the other end 912 contacts the second support member 82. Is engaged.

Between the end portion 310 of the holder 31 and the second support member 82 (between the driven member 3 and the second support member 82), the holder 31 and the driven member 3 support the second support member 82. A second biasing member 92 that applies a biasing force against the force rotating relative to the one direction R351 and the other direction R352 around the shaft 35 to the holder 31 and the driven member 3 is provided. In the present embodiment, the second urging member 92 is a torsion coil spring disposed around the support shaft 35, and one end 921 engages with the second support member 82 and the other end 922 engages with the holder 31. ing.

A contact member 85 extending in the first direction Y is provided on the other side Z 2 of the second direction Z with respect to the bearing 829 of the second support member 82, and the contact member 85 corresponds to the second support member 82. By contacting the bearing 829, the rotation of the second support member 82 in the one direction R351 around the support shaft 35 is restricted. Here, the biasing force of the second biasing member 92 is larger than the biasing force of the first biasing member 91.

(Linear drive mechanism 7)
The linear drive mechanism 7 includes the driven member 3, the holder 31, the support shaft 35, the first support member 81, the second support member 82, the first biasing member 91, and the second biasing member 92 in the first direction Y. To drive. The linear drive mechanism 7 has guide mechanisms 72 that guide the first support member 81 in the first direction Y on both sides in the third direction X. The guide mechanism 72 has guide grooves 720 in the first direction Y. The guide member 721 extends.

In this embodiment, in the first support member 81, the end of the support shaft 35 protrudes from the shaft hole 811. Further, in the first support member 81, shaft portions 812 projecting toward the opposite side (outside) from the second support member 82 on the other side Y2 in the first direction Y from the support shaft 35 on both sides in the third direction X. Is formed. A cylindrical first bearing 708 is attached to the end of the support shaft 35, and a cylindrical second bearing 709 is attached to the shaft 812. The first bearing 708 of the support shaft 35 and the second bearing 709 of the shaft portion 812 are each located inside the guide groove 720. Accordingly, the first support member 81 is rotatably supported by the support shaft 35, but the rotation of the first support member 81 around the support shaft 35 is prevented. The guide groove 720 linearly extends from the other side Y2 in the first direction Y to the one side Y1.

The linear drive mechanism 7 has a lever 75 in which a groove 750 is formed. The groove 750 protrudes in the third direction X from the rotation center shaft 53 and the rotation member 51 described with reference to FIG. A round bar-like convex portion 57 (see FIG. 2) is fitted. Further, a shaft hole 751 into which the support shaft 35 is fitted is formed at the distal end portion of the lever 75, and the support shaft 35 and the shaft hole 751 constitute a joint that can rotate around the axis L35. Therefore, the linear drive mechanism 7 has a groove 750 in which the rotation center shaft 53 and the convex portion 57 are fitted, a joint formed by the support shaft 35 and the shaft hole 751, and a guide groove in which the first bearing 708 and the second bearing 709 are fitted. 720 constitutes a slider link mechanism 77 that linearly drives the support shaft 35, the first support member 81, the second support member 82, the holder 31, and the driven member 3 in the first direction Y.

(Configuration of tilt drive mechanism 8)
6 is an explanatory diagram of the tilt drive mechanism 8 of the drive device 1 shown in FIG. 1, and FIGS. 6 (a) and 6 (b) each show a state immediately before the driven member 3 is tilted by the tilt drive mechanism 8. FIG. It is explanatory drawing and explanatory drawing which shows a mode after the to-be-driven member 3 inclines with the tilt drive mechanism 8. FIG.

As shown in FIGS. 4, 5, and 6, the drive device 1 includes a tilt drive mechanism including a contact member 85 that extends in the first direction Y on the other side in the second direction Z with respect to the bearing 829. 8 is provided. The contact member 85 has a plate shape extending in the first direction Y, and a first contact portion 851 extending linearly in the first direction Y on the other side Y2 of the first direction Y with respect to the bearing 829. And a second abutting portion 852 inclined obliquely to one side Z1 in the second direction Z on one side Y1 in the first direction Y with respect to the first abutting portion 851. Between the first contact part 851 and the second contact part 852, a third contact linearly extending in the first direction Y on the other side Z2 in the second direction Z from the first contact part 851. A portion 853 is provided. In the contact member 85, the first contact portion 851, the third contact portion 853, and the second contact portion 852 are connected in order. The contact member 85 constitutes a cam member, and the bearing 829 constitutes a cam follower.

In the tilt drive mechanism 8 configured as described above, as shown in FIG. 6A, the second support member 82 is urged in the one direction R351 around the support shaft 35 by the first urging member 91. Therefore, the contact member 85 is in contact with the bearing 829 of the second support member 82. Therefore, even if the linear drive mechanism 7 starts to drive the driven member 3 from the other side Y2 in the first direction Y to the one side Y1, the bearing 829 of the second support member 82 is in contact with the first contact portion 851 of the contact member 85. During the period of contact with the driven member 3, the driven member 3 is in the upright first posture.

Then, the driven member 3 moves from the position shown in FIG. 6A to the position shown in FIG. 6B, and the bearing 829 of the second support member 82 is moved to the first position by the second contact portion 852 of the contact member 85. When displaced in one direction Z1 in the two directions Z, the second support member 82 rotates in the other direction R352 around the support shaft 35 against the urging force of the first urging member 91 described with reference to FIG. To do. Here, since the holder 31 is coupled to the second support member 82 via the second urging member 92, the driven member 3 rotates in the other direction R352 around the support shaft 35, and the tip side is in the second direction. The second posture is inclined to the other side Z2 of Z. Here, the inclination of the driven member 3 varies depending on the position of the driven member 3 in the first direction Y. Therefore, the inclination of the driven member 3 can be adjusted depending on which position the driven member 3 is raised by the linear drive mechanism 7. In this embodiment, as the driven member 3 moves to one side Y 1 in the first direction Y, the leading end side of the driven member 3 is greatly inclined toward the other side Z 2 in the second direction Z. Therefore, the tilt of the driven member 3 can be adjusted to an optimum state depending on which position the driven member 3 is raised.

The driven member 3 is configured such that the bearing 829 of the second support member 82 is in the other direction in the second direction Z while the bearing 829 of the second support member 82 is in contact with the third contact portion 853 of the contact member 85. Since the second support member 82 is rotated in the one direction R351 around the support shaft 35 due to the displacement to the side Z2, the distal end side of the driven member 3 assumes a third posture inclined to the one side Z1 in the second direction Z.

(Configuration of external force absorbing mechanism 9)
In the drive device 1 of this embodiment, the appearance position P2 is achieved by the support shaft 35, the first support member 81, the second support member 82, the first biasing member 91, the second biasing member 92, and the contact member 85. When an external force for rotating the driven member 3 is applied to the driven member 3 that is positioned, an external force absorbing mechanism 9 (external force absorbing device) that absorbs the external force is configured.

Specifically, in the state shown in FIG. 6B, when an external force (first external force) that rotates the driven member 3 in one direction R351 around the support shaft 35 is applied as indicated by an arrow R41. The direction of the first external force is a direction in which the bearing 829 of the second support member 82 is pressed against the contact member 85. Therefore, the second support member 82 cannot rotate in one direction R351 around the support shaft 35, but can absorb the first external force by the second urging member 92 and resist the first external force. The second urging member 92 generates the urging force to be performed. For this reason, the driven member 3 can be prevented from rotating in one direction R351 around the support shaft 35 by the first external force, and when the first external force is removed, the posture of the driven member 3 is automatically set. Return to the original.

6B, when an external force (second external force) that rotates the driven member 3 in the other direction R352 around the support shaft 35 is applied as shown by an arrow R42, the second external force is applied. This direction is a direction in which the bearing 829 of the second support member 82 is separated from the contact member 85. For this reason, the second external force can be absorbed by at least one of the first urging member 91 and the second urging member 92, and the urging force against the second external force can be absorbed by the first urging member 91 and the second urging member 91. At least one of the two urging members 92 is generated. In this embodiment, the urging force of the second urging member 92 is larger than the urging force of the first urging member 91. For this reason, when the second external force is applied, the second urging member 92 only changes slightly, and the second external force is substantially absorbed by the first urging member 91 and resists the second external force. The first urging member 91 generates the urging force to be performed. In addition, when the second external force is removed, the posture of the driven member 3 automatically returns to the original position.

(Operation)
With reference to FIG. 2 and FIG. 3, the linear motion operation | movement in the drive device 1 of this form is demonstrated. First, when the rotary member 51 is rotated in the direction of the arrow R51 by the motor 50 from the state in which the driven member 3 is at the standby position P1 in the frame 2, the linear drive mechanism 7 has the first bearing 708 and the second bearing 709. While being guided by the guide groove 720, the lever 75 rotates in the direction of the arrow R51 about the rotation center axis 53. Accordingly, since the support shaft 35 and the first support member 81 move linearly to the one side Y1 in the first direction Y, the driven member 3 starts to protrude from the opening 20 of the frame 2 to the one side Y1 in the first direction Y. . At this time, the driven member 3 is urged by the first urging member 91 so that the front end side (upper end side) is inclined to the one side Z1 in the second direction Z. However, the bearing 829 of the second support member 82 is biased. Are in contact with the first contact part 851 and the third contact part 853 of the contact member 85, the leading end side (upper end side) of the driven member 3 is inclined to the other side Z2 in the second direction Z. Absent.

Then, when the linear drive mechanism 7 further drives the driven member 3 to one side Y1 in the first direction Y, the bearing 829 of the second support member 82 comes into contact as described with reference to FIG. The driven member 3 is tilted toward the other side Z2 in the second direction Z because the driven member 3 is in contact with the second contact portion 852 of the member 85. Here, the inclination of the driven member 3 varies depending on the position of the driven member 3 in the second direction Z. Therefore, the tilt of the driven member 3 can be adjusted to an optimum state depending on which position the driven member 3 is raised by the linear drive mechanism 7.

Then, when the motor 50 rotates in the reverse direction and the rotating member 51 rotates in the direction of the arrow R52 about the rotation center shaft 53, the reverse operation is performed, and the driven member 3 is in the standby position P1 in the frame 2. Return to.

(Main effects of this form)
As described above, in the driving apparatus 1 of the present embodiment, the driven member 3 is configured to be tiltable in the second direction Z, and therefore the driven member 3 can be in an appropriate posture. In addition, since the driven member 3 can be tilted in the second direction Z, when the external force in the second direction Z is applied to the driven member 3, the driven member 3 may tilt and interfere with the surroundings. In this embodiment, even if an external force in the second direction Z is applied to the driven member 3, the external force absorbing mechanism 9 including the first urging member 91 and the second urging member 92 drives the urging force that resists the external force. Applied to member 3. For this reason, while being able to suppress that the driven member 3 rotates around the spindle 35 by external force, when this external force is removed, the attitude | position of the driven member 3 returns automatically. Further, since the external force is absorbed by the external force absorbing mechanism 9 including the first urging member 91 and the second urging member 92, the first support member 81 and the second support member 81, even if the external force is applied to the driven member 3. Since a large load is not applied to the support member 82, the linear drive mechanism 7, etc., it is possible to prevent the first support member 81, the second support member 82, the linear drive mechanism 7, etc. from being damaged.

The tilt driving mechanism 8 and the external force absorbing mechanism 9 are provided with a first support member 81, a second support member 82, and a driven member 3 so as to be rotatable with respect to the support shaft 35. The first urging member 91 and the second urging member 92 are provided between the second supporting member 82 and between the second supporting member 82 and the driven member 3. For this reason, the driven member 3 can be tilted and external force can be absorbed with a simple configuration. In addition, since the tilt driving mechanism 8 and the external force absorbing mechanism 9 share a plurality of members, the configuration can be greatly simplified.

Also, since both the first urging member 91 and the second urging member 92 are torsion coil springs provided around the support shaft 35, they can be arranged in a small space. Therefore, the tilt drive mechanism 8 and the external force absorption mechanism 9 can be easily assembled, and the tilt drive mechanism 8 and the external force absorption mechanism 9 can be provided in a small space.

The driven member 3 is fixed to the holder 31 that is rotatably supported by the support shaft 35, and the second urging member 92 is provided between the second support member 82 and the holder 31. For this reason, since the driven member 3 does not directly contact the support shaft 35 and the second urging member 92, the driven member 3 can be prevented from being damaged. Therefore, there are few restrictions on the material used for the driven member 3.
(Other embodiments)

In the above embodiment, the driven member 3 is supported by the support shaft 35 via the holder 31 and the second biasing member 92 is provided between the second support member 82 and the holder 31. The member 3 may be directly supported by the support shaft 35, and the second urging member 92 may be provided between the second support member 82 and the driven member 3.

In the above embodiment, the torsion coil spring is used as the first urging member 91 and the second urging member 92, but a tension coil spring, a compression coil spring, or the like may be used.

DESCRIPTION OF SYMBOLS 1 ... Drive device, 2 ... Frame, 3 ... Driven member, 5 ... Drive source, 7 ... Linear drive mechanism, 8 ... Tilt drive mechanism, 9 ... External force absorption mechanism (external force absorption device), 20 ... Opening part, 31 ... Holder, 35 ... support shaft, 50 ... motor, 51 ... rotating member, 72 ... guide mechanism, 75 ... lever, 77 ... slider link mechanism, 81 ... first support member, 82 ... second support member, 85 ... contact member 91 ... first biasing member, 92 ... second biasing member, 720 ... guide groove, 721 ... guide member, 750 ... groove, 851 ... first contact portion, 852 ... second contact portion, 853 ... first. 3 contact portions, P1 ... standby position, P2 ... appearance position, X ... third direction, Y ... first direction, Z ... second direction

Claims

A spindle,
A driven member rotatably supported by the support shaft;
A first support member that is not rotatable with respect to the support shaft;
A second support member rotatably supported by the support shaft between the first support member and the driven member;
A first biasing member provided between the first support member and the second support member and biasing the second support member in one direction around the support shaft;
A contact member that contacts the second support member and restricts rotation of the second support member in one direction around the support shaft;
A second member that is provided between the second support member and the driven member and applies a biasing force against the relative rotation of the driven member relative to the second support member around the support shaft to the driven member; A biasing member;
An external force absorbing device characterized by comprising:
The driven member is rotatably supported on the support shaft via a holder,
The external force absorbing device according to claim 1, wherein the second urging member is provided between the second support member and the holder.
The external force absorbing device according to claim 1 or 2, wherein an urging force of the second urging member is larger than an urging force of the first urging member.
The first biasing member is a torsion coil spring provided around the support shaft,
4. The external force absorbing device according to claim 1, wherein the second urging member is a torsion coil spring provided around the support shaft. 5.
A drive device comprising the external force absorbing device according to any one of claims 1 to 4,
A linear drive mechanism that linearly moves the support shaft and the first support member in a first direction orthogonal to the axial direction of the support shaft by a driving force from a drive source;
The contact member includes a first contact portion that brings the driven member into a first posture by contact with the second support member, and one side of the first direction with respect to the first contact portion. A second contact portion that presses the second support member in the other direction around the support shaft to place the driven member in a second posture inclined in the other direction around the support shaft from the first posture; A drive device comprising:
6. The drive device according to claim 5, wherein the linear drive mechanism includes a slider link mechanism including a guide groove that linearly guides the first support member in the first direction.
The first support member is rotatably supported by the support shaft;
The drive device according to claim 6, wherein rotation of the first support member around the support shaft is blocked by the guide groove.
A frame having an opening that opens toward one side of the first direction;
8. The linear drive mechanism according to claim 5, wherein the driven member moves the driven member between a standby position in the frame and an appearance position protruding from the opening. Drive device.