JP5352481B2 - Operating mechanism of movable body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an operating mechanism of a movable body, the forward movement of which is smoothly performed, and which improves silent properties during its movement. <P>SOLUTION: This operating mechanism of the movable body includes a rail member 1 which is provided in the movable body M, and a stopper member 2 which is provided in a body B. The rail member 1 comprises a flat trace lane 10 which continues along the movement direction of the movable body M, and an engagement lane 11 in which a plurality of portions 11a to be engaged are juxtaposed along the movement direction of the movable body M. The stopper member 2 comprises a portion 22 for being brought into sliding contact with the trace lane 10, and a portion 23 for being engaged with the engagement lane 11. The portion 22 is brought into sliding contact with the trace lane 10 in the forward movement of the movable body M, so as to inhibit the engagement of the portion 23 with the engagement lane 11. When the forward movement of the movable body M is stopped, the engagement of the portion 23 with the engagement lane 11 is permitted; and this engagement is released by moving the movable body M backward. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  The present invention relates to an improvement of an operation mechanism that stably stops a movable body combined in a reciprocating manner with respect to a main body at any forward movement position when the forward movement operation is stopped.

  As a mechanism that stably stops a movable body that is reciprocally movable with respect to a main body at an arbitrary forward movement position, there is one disclosed in Patent Document 1 disclosed by the present applicant.

  In such a mechanism, an arm is rotatably provided on the side surface of the drawer, and a contact body is provided on the free end side of the arm. In addition, a contacted portion of this contact body is formed on the inner side surface of the drawer storage body so as to be alternately provided with unevenness over the moving range of the movable body. In such a mechanism, when the drawer is pulled out, the contact portion comes into contact with the contacted portion and tilts from the reference position in a direction allowing the forward movement of the drawer, and when the forward movement is stopped, the contact body is It is slightly rotated toward the reference position so that the abutting portion is pressed against the abutted portion to maintain the stopped state of the drawer.

However, in such a mechanism, the following two improvements have been further demanded.
(1) The contact between the abutting portion and the abutted portion serves as a resistance for the drawer drawing operation.
(2) Due to the contact between the contact portion and the contacted portion, an abnormal noise is generated when the drawer is moved forward and backward.

JP 2009-155891 A

  The main problem to be solved by the present invention is that the moving mechanism of this type of movable body makes the forward movement smoother and improves the quietness during the movement.

In order to achieve the above object, according to the present invention, from the first viewpoint, a movable body operating mechanism is combined with a movable body operating mechanism so as to be able to reciprocate with respect to the main body.
A rail member provided on either the main body or the movable body;
A stopper member provided on the other of these,
The rail member includes a flat trace lane that continues along the moving direction of the movable body, and an engagement lane that includes a plurality of engaged portions arranged in parallel along the moving direction of the movable body.
The stopper member includes a sliding contact portion with respect to the trace lane and an engagement portion with respect to the engagement lane.
When the movable body moves forward, the sliding contact portion slides on the trace lane to prevent the engagement portion from engaging with the engagement lane, and when the movable body stops moving, the engagement portion with respect to the engagement lane Engagement is allowed,
It is assumed that the engagement of the engaging portion is released by returning the movable body from a state where the movable body is stopped.

  When the movable body is moved forward, the engaging portion of the stopper member is not engaged with the engaging lane of the rail member, and the movable member is smoothly moved forward while sliding the sliding portion of the stopper member on the trace lane. Permissible. When the forward movement operation of the movable body is stopped, the engagement portion of the stopper member is engaged with the engagement lane, and the movable body is stably held at any forward movement position. When the movable body held in this manner is moved backward, the engagement portion of the stopper member is disengaged from the engagement lane, and the movable body is allowed to move backward.

In order to achieve the above object, according to the present invention, from the second viewpoint, the operation mechanism of the movable body, the stopper member has a rotating arm,
The engaging portion is combined with the free end side of the rotating arm so as to be movable toward and away from the rotating shaft of the rotating arm,
And the sliding contact portion is combined with the engaging portion so as to be movable toward and away from the rotating shaft,
Moreover, the stopper member has a first urging means for urging the engaging portion in a direction to separate the engaging portion from the rotation shaft,
Second urging means for urging the sliding contact portion in a direction away from the rotation shaft;
Posture maintaining means for constantly acting on the rotating arm a force toward the reference position for bringing the free end of the rotating arm closest to the rail member;
The rotating arm is tilted from the reference position in such a direction that only the sliding contact portion is brought into contact with the rail member by the urging of the second urging means when the movable body moves forward, and the movable body is allowed to move forward. When the movement is stopped, it is rotated slightly toward the reference position by the action of the posture maintaining means to bring the sliding contact portion and the engagement portion into contact with the rail member,
In addition, when the movable body is moved backward from the state where the movable body is stopped, the movable body is moved backward while temporarily moving the engaging portion in a direction to approach the rotating shaft against the bias of the first biasing means. It is assumed that it is tilted in the reverse direction.

  When the movable body is moved forward, the sliding contact portion of the stopper member is brought into sliding contact with the trace lane of the rail member, and the rotating body is tilted from the reference position. The slidable contact portion is urged away from the rotation shaft by the second urging means and is held at a position protruding from the engagement portion. It is positioned at a rotational position where it does not mesh. When the forward movement operation of the movable body is stopped, the rotating arm moves slightly in the direction toward the reference position while moving the sliding contact portion in the direction close to the rotating shaft against the urging force of the second urging means by the posture maintaining means. It is rotated. As a result, the engaging portion engages with the engaging lane, and the movable body is stably held at the position where the forward operation is stopped. When the movable body is moved backward from this position, the rotating arm is rotated to the reference position while moving the engaging portion in a direction close to the rotating shaft against the urging of the first urging means. It is tilted reversely beyond the reference position. In this way, when the rotating arm is reversely tilted, the engaging portion is separated from the rotating shaft again by the urging of the first urging means, and the sliding contact portion also protrudes from the engaging portion by the urging of the second urging means. By the sliding contact of the sliding contact portion with the trace lane, the engagement between the engagement portion and the engagement lane is prevented, and the pushing of the movable body is allowed.

  If a biasing member for constantly biasing the movable body in the backward movement direction is provided, the movable body is forcibly moved to the position before the forward movement by the biasing of the biasing member. In this case, the engaging lane of the rail member is configured to have a rack shape, a damper device that applies a braking force to the rotation of the pinion, a first gear portion that meshes with the engaging lane, and the pinion of the damper device. An intermediate gear body having a meshing second gear portion, a connection position where the second gear portion meshes with the pinion along the moving direction of the movable body, and a non-engaged state where the intermediate gear body is not meshed The movable body is supported so as to be movable over the position, and is engaged with the engagement lane so that the movable body is positioned at the non-connection position when the movable body moves forward and is positioned at the connection position when the movable body returns. There is also. In this way, the braking force by the damper device can be applied to the backward movement only when the movable body is forcibly returned by the biasing of the biasing member. Further, in this case, when the movable body is moved forward from the pre-forward position to the predetermined forward position, the intermediate gear body starts to mesh with the engagement lane, and the intermediate gear body has the engagement lane. If the meshing first gear portion is made of a soft material, in the final phase of the forced backward movement by the biasing member, that is, at the stage where the movable body approaches the position before the forward movement, By preventing the braking force of the damper device from acting on the movable body, the movable body can be reliably moved back to the return end position, that is, the position before the forward movement, by urging the urging member. Further, the intermediate gear body can be smoothly meshed with the engagement lane at the predetermined forward movement position.

  According to the present invention, when the movable body moves, the engaging portion of the stopper member does not contact the engaging lane of the rail member due to the action of the sliding contact portion, so that the movable body moves smoothly, and its quietness is achieved. Can increase the sex.

FIG. 1 is a perspective view showing a drawer to which an operation mechanism is applied and its storage body separately. FIG. 2 is a perspective view of the drawer and storage body to which the operation mechanism is applied. FIG. 3 is a perspective configuration diagram of a member on the stopper member side constituting the operation mechanism. FIG. 4 is a fragmentary perspective view of the stopper member. FIG. 5 is a perspective configuration diagram of members on the rail member side constituting the operation mechanism. FIG. 6 is a perspective configuration diagram of an urging member constituting the operation mechanism. FIG. 7 is a perspective configuration diagram of a locking member constituting the operation mechanism. FIG. 8 is a perspective view (a diagram) of the drawer and the storage body before the drawer is pulled out, and a bottom configuration diagram (b diagram) of the main part of the operating mechanism at this time. FIG. 9 is a perspective view (a diagram) of the drawer and storage body when the drawer is operated from the state of FIG. 8, and a bottom view of the main part of the operating mechanism at this time (b diagram). FIG. 10 is a perspective view (a diagram) of the drawer and storage body when the drawer operation of the drawer is stopped from the state of FIG. FIG. 11 is a perspective view (a diagram) of the drawer and the storage body immediately after starting the push-in operation of the drawer from the state of FIG. 10 and a bottom view configuration diagram of the main part of the operating mechanism at this time. FIG. 12 is a perspective view (a diagram) of the drawer and the storage body when the drawer is moved in the pushing direction, and a bottom view (b diagram) of the main part of the operating mechanism at this time. FIG. 13 is a perspective view (a diagram) of the drawer and the storage body when the drawer is pushed in, and a bottom configuration diagram (b diagram) of the main part of the operating mechanism at this time. FIG. 14 is a plan configuration diagram of the main part of the operating mechanism when the drawer is moving in the drawer direction. FIG. 15 is a plan configuration diagram of the main part of the operating mechanism when the drawer is moving in the pushing direction.

  Hereinafter, typical embodiments of the present invention will be described with reference to FIGS. The operation mechanism of the movable body M according to this embodiment is such that the movable body M combined so as to be reciprocally movable with respect to the main body B is stably at that position when the forward operation is stopped at any forward movement position. It is intended to stop. (So-called free stop)

  Further, in this embodiment, when the movable body M stopped in this way is operated backward, the free stop is released, and the backward movement of the movable body M is immediately allowed. Yes. Further, the movable body M is always urged in the backward movement direction. When the backward movement is allowed in this way, the movable body M is forcibly moved back to the position before the forward movement. It has become.

  As the movable body M, typically, a combination such as a drawer or a sliding door that is slidably movable with respect to the main body B is planned. In the example shown in the figure, an example is shown in which the movable body M is a drawer Ma, and the main body B is a storage body Ba with the front surface storing the drawer Ma open.

  Such an operation mechanism includes a rail member 1 and a stopper member 2. The rail member 1 is provided on one of the main body B and the movable body M, and the stopper member 2 is provided on the other of these. In the illustrated example, the rail member 1 is provided on the drawer Ma side as the movable body M, and the stopper member 2 is provided on the storage body Ba side as the main body B.

  1 and 2 show the overall configuration. The rail member 1 is provided on the outer surface of the bottom plate Mb of the drawer Ma on the left side of the movement center line x. In the illustrated example, a locking member 6 of a string-like connecting body 50 (described later) constituting the biasing member 5 is provided on the outer surface of the bottom plate Mb of the drawer Ma and on the right side of the movement center line x. It has been. The stopper member 2 is provided on the bracket 20 disposed below the bottom plate Mb of the drawer Ma. The left end of the bracket 20 is fixed to the inner surface of the left side plate Bb of the storage body Ba. In the illustrated example, the stopper member 2 and the rail member 1 are linked to realize the free stop when the drawer Ma at the position before the forward movement is moved forward to the predetermined forward movement position, that is, when the drawer Ma is pulled out. It is like that. In the illustrated example, the urging member 5 is provided on a bracket 51 disposed below the bottom plate Mb of the drawer Ma. The right end of the bracket 51 is fixed to the inner surface of the right side plate Bb of the storage body Ba. The urging member 5 includes a case 52 and a string-like connecting body 50 that is fed forward from the inside of the case 52. A bobbin body (not shown) that winds up the connecting body 50 and a spring spring that constantly urges the bobbin body in a direction to wind up the connecting body 50 are built in the case 52. A striker 50a is provided at a feeding end of the connecting body 50, and the drawer Ma is always in a backward movement direction by releasably capturing and engaging the striker 50a with a capturing portion 60 formed on the locking member 6. That is, it is biased in the pushing direction. The locking member 6 is provided with a release lever 61, and when the release lever 61 is operated, the capture of the striker 50a is released. When the drawer Ma is removed from the storage body Ba, the release lever 61 is operated. Further, in the illustrated example, each of the locking member 6 and the rail member 1 is provided with a piston damper 7 in which a movable portion 70 is protruded rearward, and at the final stage when the drawer Ma moves backward. The movable part 70 of the piston damper 7 of the locking member 6 hits the front end of the bracket 51, and the movable part 70 of the piston damper 7 of the rail member 1 hits the inner back part of the storage body Ba. The braking force of both piston dampers 7 acts on the drawer Ma at the final stage of the forced return of the drawer Ma by the member 5. The piston damper 7 includes a piston and a cylinder, and either side of the piston damper 7 is a movable part, and an integral resistance force is applied to this movement of the piston that is moved or relatively moved by the movement of the movable part from the reference position. It has a configuration. In the figure, reference numeral Bc denotes a guide rail for the drawer Ma provided on the side plate of the housing Ba.

  The rail member 1 includes a flat trace lane 10 continuous along the moving direction (front-rear direction) of the drawer Ma serving as the movable body M, and a plurality of engaged portions 11a, 11a,. And an engaging lane 11 that is formed.

  In the illustrated example, the rail member 1 is provided with the trace lane 10 and the engagement lane 11 at one edge portion along the length direction of the elongated rod-like body. The rail member 1 has a length direction along the direction of movement of the drawer Ma, and one edge portion provided with the trace lane 10 and the engagement lane 11 on the side where the stopper member 2 is provided. In the example shown in FIG. 2, it is provided on the outer surface of the bottom plate Mb of the drawer Ma in a state facing the left side.

  In the illustrated example, a trace lane 10 is provided between the upper and lower engagement lanes 11, 11. The engagement lane 11 is configured to have a rack shape. That is, in the illustrated example, in the thickness direction of the rail member 1, the upper engagement lane 11 is formed from the upper surface to a position of about one third of the thickness, and from the lower surface, about three-thirds. A lower engagement lane 11 is formed up to the position of one thickness, and a trace lane 10 is formed between the upper engagement lane 11 and the lower engagement lane 11. The tooth tips of the rack teeth 11b that form the engaged portions 11a constituting the engagement lane 11 are positioned on substantially the same plane as the lane surface 10a of the trace lane 10. Further, in the illustrated example, the end of the rail member 1 positioned on the front side of the drawer Ma and the front end of the trace lane 10 are in contact with the stopper member 2 described later when the drawer Ma moves forward. A step portion 10b with which the portion 22 abuts is formed. The stepped portion 10b has a slope that increases as it approaches the lane surface 10a of the trace lane 10. Reference numeral 12 in the figure denotes a guide groove, and a guide rib 21b formed on a case 21 'provided on the bracket 20 supporting the stopper member 2 so as to be slightly slidable in the left-right direction is provided in the guide groove 12. The distance between the stopper member 2 and the rail member 1 does not change.

  The stopper member 2 includes a sliding contact portion 22 with respect to the trace lane 10 and an engagement portion 23 with respect to the engagement lane 11. When the movable body M moves forward, the sliding contact portion 22 slides on the trace lane 10 to prevent the engagement of the engagement portion 23 with the engagement lane 11 and when the movable body M stops moving forward. The engagement of the engagement portion 23 with the engagement lane 11 is allowed. Further, the engagement of the engaging portion 23 is released by moving the movable body M backward from the state where the movable body M is stopped.

  In the illustrated example, when the drawer Ma stored in the storage body Ba is pulled out, the engaging portion 23 of the stopper member 2 is not engaged with the engaging lane 11 of the rail member 1 and the sliding portion of the stopper member 2 is engaged. A smooth pull-out operation of the pull-out Ma is allowed while sliding 22 in contact with the trace lane 10. When the pull-out operation of the drawer Ma is stopped, the engagement portion 23 of the stopper member 2 is engaged with the engagement lane 11, and the drawer Ma is stably held at an arbitrary pull-out position. When the drawer Ma held in this way is pushed in, the engagement portion 23 of the stopper member 2 is disengaged from the engagement lane 11 and the push-in Ma is allowed to be pushed in.

  In this embodiment, the stopper member 2 includes a rotating arm 24, an engaging portion 23, and a sliding contact portion 22. The stopper member 2 is provided on the bottom plate of the case 21 'with the upper surface and the right side surface provided on the upper surface of the bracket 20 open. An intermediate gear body 3 to be described later is provided behind the portion of the case 21 ′ where the stopper member 2 is provided. The upper surface of the case 21 ′ is covered with a cover 21 ″ combined with the case 21 ′. The cover 21 ″ includes a damper device 4 that meshes with the second gear portion 31 of the intermediate gear body 3. It has been. The case 21 ′ and the cover 21 ″ form a unit of the stopper member 2, the intermediate gear body 3, and the damper device 4. A rail provided on the drawer Ma between the case 21 ′ and the cover 21 ″. The member 1 has entered (FIG. 8A), and the rail member 1 entering in this way engages with the intermediate gear body 3 at a predetermined forward movement position of the drawer Ma, and then comes into contact with the stopper member 2. ing.

  The engaging portion 23 is combined with the rotating arm 24 on the free end 24d side so as to be movable toward and away from the rotating shaft 24b. In the illustrated example, the rotating arm 24 is configured to have a flat rectangular tube shape. The left end of the rotating arm 24 is closed, and the right end of the rotating arm 24 is opened. A bearing ear 24a is formed at the left end of the rotation arm 24, and a vertical rotation shaft 24c extending between the case 21 'and the cover 21 "in a shaft hole 24b formed in the bearing ear 24a. By passing, the rotating arm 24, that is, the stopper member 2 is rotatably supported on the main body B, that is, the housing Ba. That is, the rotating arm 24 is freely movable in the front-rear direction around the rotating shaft 24c. It is supported by the case 21 'so as to rotate by swinging its right end, which becomes the end 24d, and the engaging portion 23 is configured to have a short rectangular tube shape that fits in the rotating arm 24 with a small gap. The left end of the engaging portion 23 is closed and the right end is opened, and the engaging portion 23 stores the closed left end side in the rotating arm 24, and the central axis of the rotating arm 24. Slidable in the direction along (FIG. 4) In the example shown in the figure, the wide upper and lower surfaces of the flat rotating arm 24 are arranged along the central axis of the rotating arm 24 on the free end 24d side. Guide slits 24e are formed, and the engaging portions 23 are arranged so that the sliders 23a respectively formed on the upper and lower surfaces thereof are inserted into the guide slits 24e and slide along the guide slits 24e. Further, a claw portion 23b having a shape substantially equal to one of the rack teeth 11b protruding forward from the opening portion is formed at the right end of the engaging portion 23, above and below the opening portion of the right end. The upper claw portion 23b formed in this manner is engageable with the upper engagement lane 11 of the rail member 1, and the lower claw portion 23b is engaged with the lower engagement lane 11 of the rail member 1. In The claw portion 23b is configured to be able to enter between the adjacent rack teeth 11b constituting the engagement lane 11 of the rail member 1, and the engagement portion 23 has the claw portion 23b. A compression coil spring 25 is interposed between the closed left end of the engagement portion 23 and the left end of the rotating arm 24. This spring is engaged with the engagement lane 11. The engaging portion 23 is positioned at a protruding position for positioning the slider 23a at the right end of the guide slit 24e by the action of 25. That is, the stopper member 2 moves the engaging portion 23 to the rotating shaft 24c. First biasing means for biasing in a direction away from the first biasing means.

  The sliding contact portion 22 is combined with the engaging portion 23 so as to be movable toward and away from the rotation axis of the rotation arm 24. In the illustrated example, the sliding contact portion 22 is composed of a top 22a and a base 22c. The top 22a is made of a soft synthetic resin or rubber and has a substantially triangular shape in plan view with the top end facing forward. The base 22c is integrated with the top 22a and supported by the engaging portion 23 so as to be slidable in the direction along the central axis of the engaging portion 23. In the illustrated example, a top 22a is integrated with a base 22c made of a hard synthetic resin by two-color molding. In the illustrated example, guide slits 23c are formed on the upper and lower surfaces of the engaging portion 23 along the central axis of the engaging portion 23 each having a short cylindrical shape. The base 22c has upper and lower surfaces. The sliders 22d respectively formed in the guide slits 23c are inserted into the guide slits 23c and are slid along the guide slits 23c. A compression coil spring 26 is interposed between the left end of the base 22c and the left end of the engagement portion 23. By the action of the spring 26, the slidable contact portion 22 is positioned at a protruding position that positions the slider 22d at the right end of the guide slit 23c. In this protruding position, the top 22a of the sliding contact portion 22 is positioned in front of the claw portion 23b of the engaging portion 23, that is, on the right side. (FIG. 8B, the upper side of FIG. 8 is the right side) In other words, the stopper member 2 has second urging means for urging the sliding contact portion 22 in a direction to separate from the rotation shaft 24c.

  Further, the stopper member 2 is provided with posture maintaining means for constantly applying a force toward the reference position for bringing the free end 24 d of the rotating arm 24 closest to the rail member 1 to the rotating arm 24. As this attitude control means, an urging body such as a spring can be used. In the illustrated example, the posture control means is constituted by a torsion coil spring (not shown) in which one end of the spring is fixed to the rotating arm 24 and the other end of the spring is fixed to the case 21 '. In the illustrated example, from the reference position (FIG. 8B) where the central axis of the rotating arm 24 is orthogonal to the length direction of the rail member 1, the rotating arm 24 moves the free end 24d forward and backward. This spring causes elastic deformation even if it is tilted in any direction. In this embodiment, at such a reference position, a virtual straight line y in the front-rear direction passing through the rotation shaft 24c and the cutting edge of the rack lane 11b of the trace lane 10 and the engagement lane 11 of the rail lane 1 are used. Is substantially equal to the distance between the rotation shaft 24c and the free end 24d of the rotation arm 24, and the rotation shaft 24c is located at the protruding position. It is made to become smaller than the space | interval between the nail | claw tip of the nail | claw part 23b of a certain engagement part 23. FIG. (Fig. 8)

  In this embodiment, when the movable body M moves forward, the rotating arm 24 causes the rail member 1 to abut only the sliding contact portion 22 by the urging force of the second urging means. When the movable body M is tilted from the reference position in a direction allowing the forward movement, and when the forward movement is stopped, the movable body M is slightly rotated toward the reference position by the action of the posture maintaining means, and is slidably contacted with the rail member 1. When the movable part M is moved backward from the state in which the joint part 23 is brought into contact and the movable body M is stopped, the engagement part 23 is brought closer to the rotating shaft against the urging force of the first urging means. The movable body M is reversely tilted in such a direction as to allow the backward movement of the movable body M.

  Specifically, at the position where the drawer Ma as the movable body M is fully accommodated in the storage body Ba, the rotating arm 24 is in front of the stepped portion 10b of the rail member 1 and at the reference position. (FIG. 8) When the drawer Ma is pulled out from this state, the top 22a of the slidable contact portion 22 comes into contact with the stepped portion 10b, and the rotating body is tilted in the direction in which the free end 24d is directed forward, and the top 22a is slidably contacted with the trace lane 10. Let Since the top 22a of the slidable contact portion 22 is urged away from the rotation shaft by the second urging means and is held at a position protruding from the engagement portion 23, the movable body M is engaged by the slidable contact. The claw portions 23b of the 23 are positioned at a rotation position where they do not mesh with the rack teeth 11b of the engagement lane 11. (FIG. 9) When the pull-out operation of the drawer Ma is stopped, the rotating arm 24 moves the sliding contact portion 22 in the direction close to the rotating shaft 24c against the urging force of the second urging means by the posture maintaining means. It is rotated slightly toward the reference position. As a result, the upper and lower claw portions 23b, 23b of the engagement portion 23 are engaged with the rack teeth 11b of the corresponding engagement lanes 11, and the drawer Ma is stably held at the position where the drawer operation is stopped. (FIG. 10) When the drawer Ma is pushed in from this position, the rotating arm 24 moves to the reference position while moving the engaging portion 23 in the direction close to the rotating shaft 24c against the urging force of the first urging means. Further, it is tilted in reverse so that the free end 24d is directed rearward beyond the reference position. Thus, when the rotating arm 24 is tilted in the reverse direction, the engaging portion 23 returns to the protruding position by the biasing of the first biasing means, and the sliding contact portion 22 also returns to the protruding position by the biasing of the second biasing means. Then, the sliding contact of the sliding contact portion 22 with the trace lane 10 prevents the engagement between the engagement portion 23 and the engagement lane 11, and the push-in of the drawer Ma is allowed. (FIG. 12) In this embodiment, due to the urging of the urging member 5, the drawer Ma is forcibly moved to the position before the drawer operation that is completely stored in the storage body Ba. While the drawer Ma returns to the position before the drawer operation, the front end of the rail member 1 moves backward relative to the stopper member 2, the sliding contact between the sliding contact portion 22 and the rail member 1 is released, and the rotating arm 24 becomes the reference. Return to position. (Fig. 13)

  In this embodiment, the operating mechanism further includes a damper device 4 and an intermediate gear body 3 that meshes with the engagement lane 11.

  The damper device 4 includes a pinion 40 and is configured to apply a braking force to the rotation of the pinion 40. In the illustrated example, the damper device 4 includes a stator body 41 and a rotor body (not shown), and is configured to apply a braking force to the rotation or relative rotation of the rotor body. Typically, a viscous fluid such as silicone oil is sealed inside the stator body 41 so that the resistance of the viscous fluid is applied to the rotation of the rotor body. The rotor body is provided with a pinion 40. In the illustrated example, the damper device 4 is provided with a stator body 41 fixed to the cover 21 ″ so as to position the pinion 40 in the case 21 ′. The rotation axis of the pinion 40, that is, the rotation axis of the rotor body is along the vertical direction.

  The intermediate gear body 3 includes a first gear portion 30 that meshes with the engagement lane 11 and a second gear portion 31 that meshes with the pinion 40 of the damper device 4. In the illustrated example, the intermediate gear body 3 is integrally provided with the first gear portion 30 on the one surface of the large-diameter first gear portion 30, on the upper surface in the illustrated example, and on the upper surface thereof, the second gear portion 31 having a smaller diameter. Let me. The rotation shaft of the intermediate gear body 3 is also along the vertical direction. Further, the intermediate gear body 3 is supported so as to be movable along a moving direction of the movable body M, ranging from a connecting position where the second gear portion 31 is engaged with the pinion 40 and a non-connecting position where the pinion 40 is not engaged. ing. Then, due to the engagement of the first gear portion 30 with the engagement lane 11, the movable body M is positioned at the non-connection position when the movable body M moves forward, and is positioned at the connection position when the movable body M moves backward. Yes.

  Specifically, the intermediate gear body 3 is provided with a boss portion 32 at the center of rotation, and the boss portion 32 is elongated along the moving direction of the movable body M formed on the bottom plate of the case 21 ′. And is supported by this case 21 '. When the drawer Ma as the movable body M moves forward, the boss 32 is engaged with the engagement lane 11 of the rail member 1 and the boss 32 is positioned at the front end of the long hole 21a. The engagement with the pinion 40 is released. (FIGS. 9 and 14) Further, during the pushing operation when the drawer Ma as the movable body M is moved backward, it engages with the engagement lane 11 of the rail member 1 so that the boss portion 32 is positioned at the rear end of the long hole 21a. At this time, the second gear portion 31 and the pinion 40 are engaged with each other. (Fig. 15)

  Thereby, in the operation mechanism according to this embodiment, the braking force by the damper device 4 is applied to the return movement only when the movable body M is forcibly returned by the urging of the urging member 5. It can be made to.

  In this embodiment, when the movable body M is moved forward from the forward movement position to the predetermined forward movement position, the intermediate gear body 3 starts to engage with the engagement lane 11, The first gear portion 30 that meshes with the engagement lane 11 in the intermediate gear body 3 is made of a soft material. Specifically, in this embodiment, the intermediate gear body 3 is located in front of the end portion of the rail member 1 having the stepped portion 10b at the position before the drawer Ma is pulled out, and the first gear is provided. The portion 30 and the engagement lane 11 are separated from each other. (FIG. 8) When the pull-out operation of the pull-out Ma is started, the intermediate gear body 3 starts to engage with the engagement lane 11.

  Thereby, in the operation mechanism according to this embodiment, in the final phase of the forced backward movement by the urging member 5, that is, at the stage when the movable body M approaches the position before the forward movement, By preventing the braking force of the damper device 4 from acting on the movable body M, the movable body M can be reliably moved back to the backward movement end position, that is, the position before the forward movement, by the biasing of the biasing member 5. It is like that. Further, the intermediate gear body 3 can be smoothly meshed with the engagement lane 11 at the predetermined forward movement position. Specifically, a portion of the intermediate gear body 3 other than the tooth portion of the first gear portion 30 is made of a hard synthetic resin, and only this tooth portion is made of a soft synthetic resin by two-color molding or insert molding. .

 Although not shown in the drawings, the operation mechanism described above is provided with either the rail member 1 or the stopper member 2 on the side surface of the drawer Ma as the movable body M, and the other of these as the main body B facing this side surface. It can also be used by being provided on the side plate of the storage body Ba. In this case, the rotation axis of the rotation arm 24 of the stopper member 2 is lateral, and the posture control means can be constituted by a weight. Further, the engaging lane 11 of the rail member 1 in the operation mechanism described above may be provided only on one side of the trace lane 10, and in this case, the claw portion 23b of the engaging portion 23 of the stopper member 2 is also provided on one side. Only enough.

M movable body B body 1 rail member 10 trace lane 11 engagement lane 2 stopper member 22 sliding contact portion 23 engagement portion

Claims (5)

It is an operation mechanism of a movable body combined with a main body so as to be able to reciprocate,
A rail member provided on either the main body or the movable body;
A stopper member provided on the other of these,
The rail member includes a flat trace lane that continues along the moving direction of the movable body, and an engagement lane that includes a plurality of engaged portions arranged in parallel along the moving direction of the movable body.
The stopper member includes a sliding contact portion with respect to the trace lane and an engagement portion with respect to the engagement lane.
When the movable body moves forward, the sliding contact portion slides on the trace lane to prevent the engagement portion from engaging with the engagement lane, and when the movable body stops moving, the engagement portion with respect to the engagement lane Engagement is allowed,
An operating mechanism for a movable body, wherein the engagement of the engaging portion is released by returning the movable body from a state where the movable body is stopped. The stopper member has a rotating arm,
The engaging portion is combined with the free end side of the rotating arm so as to be movable toward and away from the rotating shaft of the rotating arm,
And the sliding contact portion is combined with the engaging portion so as to be movable toward and away from the rotating shaft,
Moreover, the stopper member has a first urging means for urging the engaging portion in a direction to separate the engaging portion from the rotation shaft,
Second urging means for urging the sliding contact portion in a direction away from the rotation shaft;
Posture maintaining means for constantly acting on the rotating arm a force toward the reference position that brings the free end of the rotating arm closest to the rail member;
The rotating arm is tilted from the reference position in such a direction that only the sliding contact portion is brought into contact with the rail member by the urging of the second urging means when the movable body moves forward, and the movable body is allowed to move forward. When the movement is stopped, it is rotated slightly toward the reference position by the action of the posture maintaining means to bring the sliding contact portion and the engagement portion into contact with the rail member,
In addition, when the movable body is moved backward from the state where the movable body is stopped, the movable body is moved backward while temporarily moving the engaging portion in a direction to approach the rotating shaft against the bias of the first biasing means. 2. The movable body operating mechanism according to claim 1, wherein the movable body is reversely tilted in an allowable direction.   The operating mechanism of the movable body according to claim 1, further comprising an urging member that constantly urges the movable body in the backward movement direction. The engagement lane of the rail member is configured to form a rack shape,
A damper device that applies a braking force to the rotation of the pinion;
An intermediate gear body including a first gear portion meshing with the engagement lane and a second gear portion meshing with the pinion of the damper device;
The intermediate gear body is supported so as to be movable over a connection position where the second gear portion meshes with the pinion and a non-connection position where the intermediate gear body does not mesh with the pinion along the moving direction of the movable body,
The engagement with the engagement lane causes the movable body to be positioned at the unconnected position when the movable body moves forward, and to be located at the connected position when the movable body moves backward. The moving mechanism of the movable body. The intermediate gear body starts to mesh with the engagement lane when the movable body is moved forward from the forward movement position to the predetermined forward movement position, and
5. The operating mechanism for a movable body according to claim 4, wherein the first gear portion that meshes with the engagement lane in the intermediate gear body is made of a soft material.

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