WO2012096262A1 - Assisting mechanism for moveable body - Google Patents

Abstract

A receiving member is provided so as to be capable of rotation across a fixed angle between a first position and a second position, and has a trapping portion for a received member, and a control pin, wherein trapping of the received member, or releasing of the received member that has been trapped, is achieved by the trapping portion in the first position, and assisting of a moveable body is achieved by rotating from this trapped state to the second position. A slider, which is provided with a guide channel for the control pin, is provided on a side of the receiving member. The slider is biased in a direction that is proximal to the receiving member. The guide channel has a corner portion with a biased end side on a bent or curved external side. When the receiving member is in the first position, the control pin is on one side of the corner portion of the guide channel, such that the rotation toward the second position of the receiving member is against the bias.

Description

Movable body assist mechanism

The present invention operates when a movable body, which is combined with a main body so as to be reciprocable from a reference position so as to be deployed, is moved forward from the deployed position to a predetermined position toward the reference position. The present invention relates to a mechanism for assisting, that is, assisting the forward movement to the reference position.

As a mechanism that assists in closing the door, a catcher that catches the striker provided on the door side when the door reaches a predetermined position by the closing operation and forcibly rotates by the biasing means from there. There is one that has the door pulled into the closed position by this catcher. (See Patent Document 1) The catcher is forcibly rotated by pressing a contact portion of a slider biased in a direction approaching the catcher against a contacted portion of the catcher.

JP 2010-95979 A

The main problem to be solved by the present invention is that this type of assist mechanism can be configured with a simpler and easier structure.

In order to achieve the above object, in the present invention, an assist mechanism for a movable body is provided in either the movable body combined with the main body so as to be able to reciprocate between a reference position and a deployment position, and the main body. A receiving member that is provided on the other of these members, and a receiving member that assists the forward movement of the movable body by capturing the received member at a predetermined position when the movable body is moved forward toward the reference position. An assist mechanism comprising:
The receiving member is provided so as to be rotatable at a constant angle between the first position and the second position, and is spaced apart from each other in the direction around the rotation center, and the receiving member capture unit and the control unit are controlled. A receiving member is captured by the capturing portion or released from the captured state at the first position, and the assist is performed by turning to the second position from the captured state. And
A side of the receiving member is provided so as to be slidable in a direction toward and away from the receiving member, and a slider having a guide groove for the control pin is provided.
The slider is biased by the biasing means in a direction approaching the receiving member,
The guide groove is formed to have a corner portion with the biased tip side bent or curved outside,
When the receiving member is in the first position, the control pin is on one side of the corner portion of the guide groove, and the receiving member is rotated toward the second position against the bias. It was supposed to be.

The slider is biased in the direction approaching the receiving member, but when the receiving member is in the first position, the control pin is positioned on one side across the corner portion of the guide groove. The rotation toward the position resists the urging, and thus the state where the receiving member is in the first position is stably maintained. When the receiving member captures the receiving member by the forward movement of the movable body and rotates toward the second position, the slider moves in a direction against the bias until the control pin gets over the corner portion of the guide groove. Is done. When the control pin gets over the corner portion of the guide groove, the control pin enters the rear side of the biasing force from the corner portion, so that the slider is moved to the biasing destination of the biasing member and the second position of the receiving member Rotation toward is supported by this bias. Thereby, the forward movement of the movable body to the reference position is assisted through the receiving member. The receiving member and the slider can be appropriately combined only by placing the control pin in the guide groove, can be easily assembled, and the number of parts can be minimized. Further, by changing the shape of the guide groove, the rotation speed of each position of the receiving member can be easily changed as necessary.

The receiving member has a linkage pin with a distance from the control pin in a direction around the rotation center,
An additional slider that is disposed so as to position the receiving member between the slider and that is slidable in a direction that is close to and away from the receiving member;
The additional slider is provided with a linkage groove for the linkage pin, and the additional slider is moved away from the receiving member by turning toward the second position of the receiving member, and resistance is given to this movement by the braking means. Sometimes it is made to do so.
In this way, the braking force of the braking means can be applied to the rotation of the receiving member toward the second position, that is, the forward movement of the movable body assisted in the forward movement by the receiving member. Further, the receiving member and the additional slider can be appropriately combined by simply placing the linkage pin in the linkage groove.

The other side across the corner portion of the guide groove changes the rotation speed of the receiving member due to the urging force of the urging means via the slider between the predetermined rotating position and the second position of the receiving member. A groove portion may be provided. In this way, typically, immediately before the movable body reaches the reference position, the assist for the movable body is weakened so that, for example, the door as the movable body does not close with a loud sound. Can be.

The linkage groove includes a groove portion that changes or cancels the application of resistance to the rotation of the receiving member by the braking means via the additional slider between the predetermined rotating position and the second position of the receiving member. Sometimes it is left. In this way, immediately before the movable body reaches the reference position, the braking force on the movable body can be reduced to zero or increased.

The capturing part of the receiving member is configured to have a pin shape,
The receiving member has a hook-like portion that allows the receiving member to enter the inside of the hook at a predetermined position when the movable body is moved forward toward the reference position.
At the reference position when the movable body is moved forward from the state in which the receiving member is rotated to the second position without catching the receiving member (malfunction state) outside the hook end of the hook-like portion. In some cases, a recess is formed in which the capturing portion is accommodated. By doing so, it is possible to prevent the receiving member and the receiving member from being damaged even if the movable body is forwardly rotated to the reference position in the malfunction state.

According to the present invention, a mechanism that assists the forward movement of the movable body to the reference position can be appropriately configured with a simple and easily assembled structure.

FIG. 1 is a perspective configuration diagram showing an example in which an assist mechanism according to an embodiment of the present invention is used as a door when viewed obliquely from below. FIG. 2 is a perspective configuration diagram illustrating an example in which the assist mechanism according to the embodiment is used as a door as viewed obliquely from above. FIG. 3 is a perspective view showing a unit including a receiving member constituting the assist mechanism according to the embodiment. FIG. 4 is a bottom view of the unit of FIG. FIG. 5 is an exploded perspective view of the receiving member. FIG. 6 is a perspective view of the upper part constituting the receiving member. FIG. 7 is a perspective view of a slider and an additional slicer included in the unit of FIG. FIG. 8 is a bottom view of the receiving member in the first position. FIG. 9 is a bottom configuration diagram showing a state in which the receiving member is in a position slightly rotated from the first position toward the second position to capture the received member. FIG. 10 is a bottom view of the receiving member in the second position and the door in the closed position.

Hereinafter, a typical embodiment of the present invention will be described with reference to FIGS. In the assist mechanism according to this embodiment, when the movable body D combined with the main body so as to be able to reciprocate from the reference position is moved forward from the development position toward the reference position to a predetermined position. It operates to function to assist, that is, assist the forward movement of the movable body D to the reference position.

Such an assist mechanism can be typically used for assisting the forward movement of various movable bodies D such as a door of a house, a door of an automobile, a door or a lid of various devices or fixtures. Specifically, such an assist mechanism operates when such a door is moved forward from a deployed position, typically an open position, to a reference position, typically a closed position, to a predetermined position. Thus, the doors and the like function to be pulled into the reference position.

The assist mechanism includes a receiving member 1 and a receiving member 7. The receiving member 7 is provided in one of the main body F and the movable body D, and the receiving member 1 is provided in the other of these. The receiving member 1 assists the forward movement of the movable body D by capturing the received member 7 at a predetermined position when the movable body D is moved forward toward the reference position.

In the illustrated example, the door Da as the movable body D is provided with the receiving member 7, and the door frame Fa as the main body F is provided with the receiving member 1.

On the hinge side Db of the door Da, the received member 7 has an engraving Dd opened upward on the upper end surface Dc of the door Da, and the upper surface of the received member 7 is substantially flush with the upper end surface Dc of the door Da. It is paid in this way. In the illustrated example, the received member 7 has a hook-like portion 70 that allows the receiving member 1 to enter the hook at a predetermined position when the movable body D is moved forward toward the reference position (closed position in the illustrated example). have. In the illustrated example, such a hook-like portion 70 is formed by engraving a groove-like recess 72 on the upper surface portion of the disc-like body 71 that is received and fixed in the engraving Dd. The recess 72 communicates with the linear groove 73 extending in the left-right direction of the door Da by positioning the groove back end 73a on the hinge side Db of the door Da, and rotates the door Da toward the closed position. It has the introduction groove part 74 opened outward on the one surface De side of the door Da positioned forward when it is moved. A hook-like portion 70 having a hook end directed to the free end Df side of the door Da is formed at a communication portion between the linear groove portion 73 and the introduction groove portion 74. The introduction groove portion 74 is a guide in which the groove wall 74a continuous to the groove wall 73b on the side facing the hook-like portion 70 in the linear groove portion 73 is inclined toward the free end Df of the door Da toward the introduction opening. The surface 74b is used. A notch Dg communicating with the introduction opening of the introduction groove 74 is formed on the one surface side of the door Da. The catching portion 10 to be described later of the receiving member 1 has its axis lined up and down, and its lower end 10a is below the upper end surface Dc of the door Da and above the introduction groove portion 74 of the receiving member 7 and the groove bottom of the linear groove portion 73. When the door Da is forwardly rotated toward the closed position, the catching portion 10 of the receiving member 1 in a first position, which will be described later, is received at a predetermined position. Into the introduction groove 74. The trapping part 10 that has entered comes into contact with the guide surface 74b, and the receiving member 1 starts to rotate forwardly toward the second position due to the inclination of the guide surface 74b. Get in. (FIGS. 8 to 9) Thereby, the receiving member 7 is captured by the receiving member 1. The receiving member 1 is rotated to the second position in the horizontal direction around the vertical shaft 11 by the urging force of the urging means 4 through the slider 3 described later from this captured state, and the door Da is closed by this rotation. Drawn in. (FIG. 10) When the door Da in the closed position is moved backward toward the open position, the receiving member 1 capturing the received member 7 is rotated backward to the first position and reaches the first position. The capturing part 10 is pulled out from the groove part 73. As a result, the receiving member 7 is released from the receiving member 1.

In this embodiment, the receiving member 1 has been rotated to the second position on the outside of the hook end of the hook-like portion 70 of the receiving member 7 without capturing the receiving member 7. A recess 75 in which the capturing unit 10 is accommodated is formed at the reference position when the movable body D is moved forward from the (malfunction state). In the illustrated example, the hook end of the hook-like portion 70 is configured to be located inward from the outer edge 71a of the disk-like body 71 constituting the member 7 to be received. The recess 75 is formed between the ends. As a result, in this embodiment, even if the door Da as the movable body D is moved forward to the closed position as the reference position in the malfunction state, the receiving member 1 and the received member 7 are damaged. Does not occur.

On the other hand, the receiving member 1 is rotated in the horizontal direction around the vertical axis 11 in the engraving Fd with the lower surface opened on the hinge side Db of the door Da in the upper part Fb of the door frame Fa and formed in front of the door stop Fc. It is prepared to be movable. In the example shown in the drawing, the receiving member 1 is housed in a case 2 having an open bottom surface that is long in the left-right direction of the door frame Fa. In the case 2, a slider 3 and its biasing means 4, and an additional slider 5 and its braking means 6 are further housed. The receiving member 1 is disposed in the center of the case 2, and a slider 3 is disposed between the receiving member 1 and an end 20 positioned on the hinge side Db of the door Da in the case 2, and the receiving member 1 and the case 2. An additional slider 5 is arranged between the door Da and the end 21 located on the free end Df side. The case 2 is housed in the engraving Dd so that its lower side does not protrude from the lower surface of the upper part Fb of the door frame Fa. The capturing part 10 of the receiving member 1 has its lower end 10 a positioned below the lower part of the case 2. The unit configured by housing the receiving member 1 and the like in the case 2 moves the slider 3 and the additional slider 5 in the length direction, and becomes the urging means 4 in the direction along the length direction. Since the layout is such that the central axis of the compression coil spring 4 ′ and the central axis of the piston damper 60 serving as the braking means 6 are arranged, it is possible to provide the upper part Fb of the door frame Fa without any trouble.

The receiving member 1 is provided so as to be able to turn at a constant angle between the first position and the second position, and is spaced apart from each other in the direction around the turning center, so that the capturing portion of the received member 7 10, a control pin 12, and a linkage pin 13, and the captured member 7 is captured or released by the capturing unit 10 at the first position, and from this captured state The assist is performed by turning the second position to the second position.

In the illustrated example, the receiving member 1 rotates in the horizontal direction around a vertical axis 11 fixed to the top plate of the case 2. The capturing unit 10, the control pin 12, and the linking pin 13 are all provided so that the axis is along the vertical direction. The distance from the vertical axis 11 is the largest in the capture unit 10, and the distance between the control pin 12 and the vertical axis 11 is substantially equal to the distance between the linkage pin 13 and the vertical axis 11.

The capturing part 10 is positioned in front of the side edge of the case 2 facing the one surface De of the door Da in the first position (FIG. 8), and is positioned below the case 2 in the second position. It has become. (Fig. 10)

The control pin 12 and the linkage pin 13 are both provided so as to protrude toward the top plate 23 side of the case 2 and are always positioned in the case 2. The control pin 12 is positioned on the hinge side Db of the door Da, and the linkage pin 13 is always positioned on the free end Df side of the door Da.

In the illustrated example, the receiving member 1 is configured by combining a lower part indicated by reference numeral 14 and an upper part indicated by reference numeral 15 in FIG. The lower part 14 has a fan-shaped portion 14a and an arm portion 14b protruding in the horizontal direction from the essential position of the fan-shaped portion 14a, and the capturing portion 10 is formed at the tip of the arm portion 14b. The upper part 15 has a fan shape in which the fan-shaped part 14a of the lower part 14 is attached to the lower surface, and has a shaft hole 15a through which the vertical shaft 11 passes at the essential position, and the control pin 12 and The linkage pin 13 is provided in a protruding shape.

The slider 3 is provided in the case 2 so as to be slidable in the direction of approaching and separating from the receiving member 1. At the same time, a guide groove 30 for the control pin 12 is formed in the slider 3. The slider 3 is urged by the urging means 4 in a direction approaching the receiving member 1.

In the illustrated example, the slider 3 fits in a small space between a front rising part 24 formed on a side edge of the case 2 facing the one surface De of the door Da and a rear rising part 25 facing the front rising part 24. It has a main body 31 having a disk shape with a width, and is slid and moved in the length direction of the case 2, that is, in the left-right direction of the door frame Fa, guided by both rising portions 24, 25. An ear 32 having a thickness that fits between the upper surface of the upper part 15 of the receiving member 1 and the top plate 23 of the case 2 is formed on the side of the main body 31 facing the center of the case 2. Yes. The guide groove 30 is formed so as to penetrate the ear portion 32 up and down, and the control pin 12 is inserted into the guide groove 30 from below so that the receiving member 1 and the slider 3 are combined. In addition, one end of the rod 33 protruding along the length direction of the case 2 is integrally formed on the side portion of the main body 31 facing the end portion 20 located on the hinge side Db of the door Da in the case 2. It is connected. An end part indicated by reference numeral 26 is fixed to the end 20 side of the case 2 that is positioned on the hinge side Db of the door Da, and the rod 33 is inserted into a through hole 26a formed in the end part 26. It is designed to be inserted. A compression coil spring 4 ′ is wound around the rod 33 between the main body 31 and the end part 26, and the slider 3 is urged in a direction close to the receiving member 1 by the compression coil spring 4 ′. It has become. That is, in the illustrated example, the compression coil spring 4 ′ functions as the urging means 4.

The guide groove 30 formed in the slider 3 as described above is formed so as to have a corner portion 30a with the biased tip side of the bias being bent or curved outward. When the receiving member 1 is in the first position, the control pin 12 is on one side of the guide groove 30 with the corner portion 30a interposed therebetween, in the illustrated example, on the front end 30b side of the guide groove 30, and The rotation toward the second position is made against the bias.

In the illustrated example, the guide groove 30 is not formed along a virtual circular arc centering on the vertical axis 11. The front end 30b of the guide groove 30 is located on the end 20 side, which is located on the hinge side Db of the door Da in the case 2, with respect to the rear end 30c, that is, on the biasing rear side of the biasing. The corner portion 30a is formed at a position approximately in the middle of the guide groove 30 in the front-rear direction.

The slider 3 is urged in the direction approaching the receiving member 1. However, when the receiving member 1 is in the first position, the control pin 12 is positioned on one side of the corner portion 30 a of the guide groove 30. Rotation of the receiving member 1 toward the second position resists the biasing, and thus the state where the receiving member 1 is in the first position is stably maintained. When the receiving member 1 captures the receiving member 7 by the forward movement of the movable body D and is turned toward the second position, the slider 3 is attached until the control pin 12 gets over the corner portion 30a of the guide groove 30. Moved in a direction against the force. When the control pin 12 gets over the corner portion 30a of the guide groove 30, the control pin 12 enters the biasing rear side of the corner portion 30a, so that the slider 3 is moved to the biasing destination. The rotation of the receiving member 1 toward the second position is assisted by this biasing. Thereby, the forward movement of the movable body D to the reference position is assisted through the receiving member 1.

In this embodiment, the other side of the guide groove 30 across the corner portion 30a is between the predetermined rotation position of the receiving member 1 and the second position, and the biasing means 4 via the slider 3 is used. A groove portion 30d for changing the rotation speed of the receiving member 1 by the urging force is provided. In the example shown in the drawing, the rear end side of the guide groove 30 is positioned slightly closer to the urging destination side than the corner portion 30a. Therefore, when the control pin 12 reaches the rear end 30c side of the guide groove 30, the slider 3 is slightly pushed again by the control pin 12 in the direction to resist the bias, and the receiving member 1 is rotated toward the second position. The subsidy by the energization of the is reduced. Thereby, in this embodiment, immediately before the movable body D reaches the reference position, the assist for the movable body D is weakened, and for example, the door Da as the movable body D closes with a loud sound. There is no such thing.

The additional slider 5 is provided in the case 2 so as to be slidable in the direction of approaching and separating from the receiving member 1. At the same time, a linkage groove 50 for the linkage pin 13 is formed in the additional slider 5. The additional slider 5 is moved away from the receiving member 1 by the rotation of the receiving member 1 toward the second position by the connecting pin 13 and the connecting groove 50, and the movement is resisted by the braking means 6. Is to be granted.

In the example shown in the figure, the additional slider 5 has a main part 51 having a disk shape with a width that fits in a small space between the front rising part 24 and the rear rising part 25 in the case 2. , 25 is slid and moved in the length direction of the case 2, that is, in the left-right direction of the door frame Fa. An ear 52 having a thickness that fits between the upper surface of the upper part 15 of the receiving member 1 and the top plate 23 of the case 2 is formed on the side of the main body 51 facing the center of the case 2. Yes. The linkage groove 50 is formed so as to penetrate the ear portion 52 vertically, and the linkage pin 13 enters the linkage groove 50 from below so that the receiving member 1 and the additional slider 5 are combined.

The main body 51 is combined with a so-called piston damper 60 including a cylinder 61, a piston (not shown), and a piston rod 62 connected to the piston. The piston damper 60 moves the piston in the length direction of the case 2, that is, in the left-right direction of the door frame Fa, and acts on the movement of the piston toward the inner back of the cylinder 61-. It is supposed to let you. In the illustrated example, a holding space 51 a for receiving and holding the cylinder 61 of the piston damper 60 is formed in the main body 51 of the additional slider 5. The holding space 51a is opened at the side of the main body 51 facing the end 21 that is located on the free end Df side of the door Da in the case 2, and the piston rod is directed toward the end 21 from there. 62 is protruded. An end part indicated by reference numeral 27 in the drawing is fixed to the end 21 side of the case 2 that is positioned on the free end Df side of the door Da, and the protruding end of the piston rod 62 is fixed to the end part 27. It is like that. When the additional slider 5 is moved away from the receiving member 1, the piston is pushed into the cylinder 61 through the piston rod 62, and the resistance force of the piston damper 60 acts on the movement of the additional slider 5. That is, in the illustrated example, the piston damper 60 functions as the braking means 6.

The linkage groove 50 formed in the additional slider 5 as described above is not formed along a virtual circular arc centered on the vertical axis 11. The linkage groove 50 is bent on the front end 50a side so that the slider 3 side is bent outward.

When the receiving member 1 is in the first position, the linkage pin 13 is located at the rear end 50b of the linkage groove 50. (FIGS. 4 and 8) When the receiving member 1 is rotated toward the second position, it is pushed by the linkage pin 13 and the additional slider 5 is moved away from the receiving member 1. As a result, the receiving member 1 is rotated toward the second position, that is, the braking force of the braking means 6 applied to the forward movement of the movable body D assisted in the forward movement is applied to the receiving member 1. ing.

The linkage groove 50 changes or cancels the application of resistance to the rotation of the receiving member 1 by the braking means 6 via the additional slider 5 between the predetermined rotating position and the second position of the receiving member 1. A groove portion 50c can also be provided. In the illustrated example, the case between the bent portion 50d of the linkage groove 50 and the front end 50a approaches the end portion 21 located on the free end Df side of the door Da in the case 2 as it approaches the front end 50a. 2 extends in a direction crossing the longitudinal direction. If the connecting pin 13 enters between the bent portion 50d of the connecting groove 50 and the front end 50a immediately before the receiving member 1 reaches the second position, the additional slider 5 is moved away from the receiving member 1 at this time. The amount of movement can be reduced. Therefore, in this way, immediately before the movable body D reaches the reference position, the braking force on the movable body D is reduced to zero or reduced, for example, a door latch (not shown) provided in the door Da as the movable body D is provided. The latch bolt to be configured can be moved forward at a speed required to engage the receiving portion of the latch bolt provided on the door frame Fa side.

When the movable body D at the reference position is moved back to the deployed position, the receiving member 7 is captured and the receiving member 1 at the second position is rotated toward the first position, and is moved by this rotation. A direction in which the slider 3 is once moved in a direction away from the receiving member 1 by the control pin 12 and then approached to the receiving member 1 by the bias at a position where the control pin 12 enters the front end side of the corner portion 30a of the guide groove 30. The state in which the receiving member 1 is in the first position is maintained again. Further, the additional slider 5 is moved in the direction close to the receiving member 1 by the linkage pin 13 moved by the rotation of the receiving member 1, and the piston rod 62 is pulled out from the cylinder 61 to the position before being pushed.

In the assist mechanism according to this embodiment, the receiving member 1 and the slider 3 can be appropriately combined by simply placing the control pin 12 in the guide groove 30, and can be easily assembled, and the number of parts can be minimized. Can be a thing. Moreover, the rotation speed in each position of the receiving member 1 can be easily changed as needed by changing the shape of the guide groove 30. Although not shown, the opened lower part of the case 2 is appropriately covered with a cover and decorated.
The entire contents of the specification, claims, drawings and abstract of Japanese Patent Application No. 2011-003078 filed on January 11, 2011 are incorporated herein by reference as the disclosure of the specification of the present invention. Is.

Claims (5)

The movable body combined with the main body so as to be able to reciprocate between the reference position and the unfolded position, and the receiving member provided on either one of the main body, and the movable body provided on the other of the main body are moved toward the reference position. An assist mechanism comprising a receiving member that captures the received member at a predetermined position when the moving operation is performed and assists the forward movement of the movable body,
The receiving member is provided so as to be rotatable at a constant angle between the first position and the second position, and is spaced apart from each other in the direction around the rotation center, and the receiving member capture unit and the control unit are controlled. A receiving member is captured by the capturing portion or released from the captured state at the first position, and the assist is performed by turning to the second position from the captured state. And
A side of the receiving member is provided so as to be slidable in a direction toward and away from the receiving member, and a slider having a guide groove for the control pin is provided.
The slider is biased by the biasing means in a direction approaching the receiving member,
The guide groove is formed to have a corner portion with the biased tip side bent or curved outside,
When the receiving member is in the first position, the control pin is on one side of the corner portion of the guide groove, and the receiving member is rotated toward the second position against the bias. A movable body assist mechanism characterized by the above. The receiving member has a linkage pin at a distance from the control pin in a direction around the rotation center, and
An additional slider that is disposed so as to position the receiving member between the slider and that is slidable in a direction that is close to and away from the receiving member;
The additional slider is provided with a linkage groove for the linkage pin, and the additional slider is moved away from the receiving member by turning toward the second position of the receiving member, and resistance is given to this movement by the braking means. The assist mechanism for a movable body according to claim 1, wherein the assist mechanism is configured as described above. The other side across the corner portion of the guide groove changes the rotation speed of the receiving member due to the urging of the urging means via the slider between the predetermined rotating position and the second position of the receiving member. The assist mechanism for a movable body according to claim 1, further comprising a groove portion. The linkage groove includes a groove portion that changes or cancels the application of resistance to the rotation of the receiving member by the braking means via the additional slider between the predetermined rotating position and the second position of the receiving member. The assist mechanism for a movable body according to claim 2 or claim 3, wherein The capturing part of the receiving member is configured to have a pin shape,
The received member has a hook-shaped portion that allows the receiving member to enter the inside of the hook at a predetermined position when the movable body is moved forward toward the reference position.
Outside the hook end of the hook-shaped portion, when the movable body is moved forward from the state where the receiving member has been rotated to the second position without capturing the receiving member, The assist mechanism for a movable body according to any one of claims 1 to 4, wherein a recess for receiving the recess is formed.

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