JP2010084479A - Assist device for moving body - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve versatility and quality by changing an initial energizing force in a state where a pushing energizing force is accumulated without giving a load and according to the purpose or the moving resistance of a moving body. <P>SOLUTION: The assist device 1 which is provided on either a moving body 11 or a fixed body 10, when operating the moving body 11 to move between a first position (close position) and a second position (open position) of the fixed body 10, to assist the movement of the moving body by an energizing force of an energizing member 4 includes a latch mechanism 5 or 26 which accumulates the pushing energizing force to the direction of the first position or second position in the process of moving the moving body 11 to the first or second position, holds the accumulated energizing force, and releases the holding of the energizing force by further movement of the moving body 11 to the same direction; and an adjustment means 6 or 23 which changes the energizing force. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  In the present invention, when moving the moving body between the first position and the second position of the fixed body, the moving body assists the moving operation from the first position to the second position or from the second position to the first position. The present invention relates to an assist device. Here, the moving body is a door, a tray, a sliding door, a drawer, or the like. The first position and the second position of the fixed body are, for example, an open position and a closed position in the case of a door or a sliding door, and a drawer or use position and a push-in or storage position in the case of a tray or drawer.

This type of assist device is known as, for example, a door opening assist mechanism as disclosed in Patent Document 1, and is stored in a cylindrical case, a spring disposed in the case, and the case so as to be able to appear and retract. And an elastic protruding rod that protrudes by the biasing force of the spring. This device is a rotary door provided with a locking means (latch) that is rotated with respect to a fixed-body-side column frame via a hinge and that holds a closed posture. It is attached to either one of the side end face and the side face of the column frame adjacent to the end face. Or in a sliding door, in the attitude | position which closed this door, it attaches to either one of the end surface of a door, and the side surface of the column frame adjacent to this end surface. In operation, the door is always urged in the opening direction by the pressing force of the protruding rod when the door is closed. For example, for the disabled, the door can be easily opened only by unlocking the lock means (latch). Can be opened, and the door can be prevented from rattling.
JP 11-280329 A

  The conventional structures described above are particularly restricted in application and lack general versatility. That is, in the conventional structure, when the door is closed, the door is always urged in the opening direction by the pressing force of the protruding bar, so that the lock means (latch) that holds the door closed posture due to the load of the pushing biasing force. Is required or the set value of the urging force is easily restricted by the relationship with the locking means, and since the urging force for extrusion is constant, the range that can be used even for doors is narrow, load or movement resistance In the case of different doors, they had to be individually designed and manufactured.

  Therefore, the object of the present invention is to solve the above-described problems, without applying a load in a state where the pushing biasing force is accumulated, and at the same time, depending on the application and the moving resistance of the moving body, the biasing force (initial biasing force) is applied. The purpose is to improve versatility and quality.

  In order to achieve the above object, according to the present invention, when the movable body is moved between the first position and the second position of the fixed body, the movable body is provided on one of the movable body and the fixed body. In the assist device that assists the movement of the moving body by the biasing force, the biasing force for pushing in the second position or the first position direction is accumulated in the process of moving the movable body to the first position or the second position, and the accumulated biasing force is accumulated. An adjustment means for changing the urging force is provided together with a latch mechanism for holding the urging force and releasing the holding of the urging force by further movement of the movable body in the same direction.

The above push-up device is more preferably embodied as follows.
(1) The adjustment means is configured to selectively change the biasing force from a plurality of predetermined strength setting units (Claim 2), or the biasing force is arbitrarily set within a predetermined range. Or a configuration that changes steplessly (Claim 3).
(2) The assist device includes a cylindrical main body, an extruded body that is slidably disposed on the main body and is switched between a retracted state retracted into the main body and a protruding state protruding from the main body, and the extruded body. A biasing member biasing in a direction protruding from one end of the main body, a latch interposed between the biasing member and the extruded body, and a holding supporting one end of the biasing member The latch mechanism is provided in the main body and the latch, and the pusher can be switched between the retracted state and the projecting state using the biasing force of the biasing member, A main groove provided in one of the main body and the holding body and extending in a moving direction of the extruded body, a sub groove extending in a different direction from a part of the main groove, and provided in the other of the main body and the holding body. Engaging portions that fit into the main groove and the sub-groove; A, wherein a structure for changing the engaging portion of the engaging portion with respect to the grooves and sub-grooves through a relative sliding and rotation operations with the holding member and the main body (Claim 4).

(3) The assist device includes a cylindrical main body, an extruded body that is slidably disposed on the main body and is switched between a retracted state retracted into the main body and a protruding state protruding from the main body, and the extruded body. A biasing member biasing in a direction protruding from one end of the main body, a latch interposed between the biasing member and the extruded body, and a holding supporting one end of the biasing member The latch mechanism is provided in the main body and the latch, and the pusher can be switched between the retracted state and the projecting state using the biasing force of the biasing member, A male screw portion provided on one of the main body and the holding body and extending in the moving direction of the extruded body; and a female screw portion provided on the other of the main body and the holding body and screwed into the male screw portion. Screwing of the male screw part and the female screw part It is configured to change the connection points of the holder in status with respect to the body via a relative rotation operation of the holding member and the main body (claim 5).
(4) The extruded body has a structure having an impact absorbing member provided on the protruding end side (Claim 6).
(5) The extruding body is prevented from coming off by abutment between the restricting portion provided on the extruded body and the restricting portion provided on the main body, and is maintained in the protruding state, and at least one of the restricting portions. It is the structure which has the provided impact-absorbing member (Claim 7).

  In the first aspect of the invention, as illustrated in the example of FIG. 3, in the process of moving the movable body to the first position (closed position) of the stationary body, the urging force in the second position (open position) direction is accumulated, and A latch mechanism that retains the accumulated urging force and releases the retention of the urging force by further movement of the moving body in the same direction, and an adjustment unit that changes the urging force are provided. As this assist device, in order to hold the biasing force accumulated by the latch mechanism at the first position (closed position) of the fixed body as compared with the conventional structure, for example, a lock that keeps the fixed body at the first position (closed position). Even if the engagement / disengagement means such as a device is not required and the engagement / disengagement means is provided, no load is applied to the engagement / disengagement means. At the same time, since the urging force can be changed by the adjusting means, it can be used even when the load when moving the moving body (door, etc.) is different, and it can always be used in an optimum state even after being attached once.

  In the second aspect of the invention, since the adjusting means selects the urging force from the strong and weak classes (for example, strong-weak, strong-medium-weak, etc.), it can be accurately and quickly changed although there is no fine adjustment. On the other hand, in the invention of claim 3, the adjusting means can steplessly adjust the urging force, that is, finer and finer.

  In the invention of claim 4, the assist device includes a main body, a push body, a biasing member, a latch mechanism, and a holding body, and the adjusting means slides and rotates the engagement body with respect to the main body in the moving direction of the push body. It is a structure and can implement Claim 1 and 2 with few members. On the other hand, in the invention of claim 5, the assist device is composed of a main body, an extruded body, a biasing member, a latch mechanism, and a holding body, and the adjusting means rotates the engaging body with respect to the main body. Item 1 and 3 can be implemented with few members.

  In the invention of claim 6, as explained in the example of FIG. 3, the extruded body abuts against the opposing surface of the mating side (in the example of FIG. 3, the movable body) via the impact absorbing member on the tip side. The possibility of scratches and impact noise can be eliminated. On the other hand, in the invention of claim 7, for example, even if the urging force of the urging member or the accumulated urging force is set strongly, the extruded body is switched from the retracted state to the protruding state by the accumulated urging force. It can eliminate the impact sound that sometimes occurs.

  Hereinafter, as a form of the present invention, the 1st form of Drawing 1-Drawing 8, the 2nd form of Drawing 9 and Drawing 10, and the 3rd form of Drawing 11 and Drawing 12 are explained. In this description, after clarifying the structure and operation of the first embodiment, the modification of the second embodiment and the change of the third embodiment will be described in detail.

(First Mode) The assist device 1 according to the first mode, for example, when the door 11 is moved between a closed position and an open position of the main body 10 such as a storage as shown in FIG. In the structure which is provided in any one of 10 and assists the movement of the door 11 by the biasing force, as shown in FIG. 5, the cylindrical housing 2, the extruded body 3 slidably disposed in the housing 2, the extrusion An urging member 4 that urges the body 3 in the protruding direction, a latch 5 interposed between the urging member 4 and the pressing body 3, and a holding body 6 that supports one end of the urging member 4. The latch 2 is formed in the latch 5 and the housing 2, and the housing 2 and the holding body 6 are provided with a latch mechanism that allows the pusher 3 to be switched between a retracted state and a protruding state using an urging force with respect to the housing 2. The biasing force of the biasing member 7 formed (this biasing force is applied) The adjustment means that can change the initial urging force in a state in which the accumulated urging force is released by releasing the holding of the force, that is, the urging force before the urging force accumulation set in the apparatus) And.

  Note that the door 11 and the main body 10 are examples of a moving body and a fixed body, but the target moving body and the fixed body are not limited thereto, and for example, the rotary door and the door described in Patent Document 1 It is also possible to use a column frame that supports the door through a hinge, a sliding door such as a sliding door, a main body frame that supports the door movably, a tray, and a main body that inserts and removes the tray. Among the constituent members, the housing 2, the extruded body 3, the latch 5, and the holding body 6 are all resin molded bodies, but may be other than resin.

  Here, the housing 2 has an elongated cylindrical tube portion 20 as shown in FIG. 6, an installation portion 21 provided on the outer periphery of the tube portion 20, and mounting holes 22 a provided on both sides of the installation portion 21. Mounting portion 22. The cylindrical part 20 has a front side where the extruded body 3 protrudes and retracts on the right side and a rear side on which the holding body 6 is attached on the left side. In addition, the inner side 25 having a smaller diameter is formed on the front side thereof. On the outer periphery of the rear end side of the cylindrical portion 20, adjustment grooves 23 are provided in pairs at the upper and lower portions.

  Each adjustment groove 23 includes a substantially L-shaped introduction groove 23a that communicates with the rear end of the tubular portion, and a main groove that communicates with the leading end of the introduction groove 23a and extends in the longitudinal direction of the tubular portion 20, that is, in the moving direction of the extruded body 3. 23b and a sub-groove 23c extending in the circumferential direction from the front end of the main groove 23b and turning again. The introduction groove 23a is formed shallower than the main groove 23b, and once the engagement portion 64 of the holding body 6 to be described later is slid from here to the main groove 23b, the engagement portion 64 does not inadvertently come out of the main groove 23b. It is like that. The auxiliary groove 23c makes it possible to switch the initial urging force of the urging member 4 to the strongest mode when the engaging portion 64 is locked from the main groove 23b to the rear end of the groove. The main groove 23b enables the initial biasing force of the biasing member 4 to be switched to the weakest mode when the engaging portion 64 is shifted from the sub-groove 23c and locked to the rear end of the groove.

  The small-diameter inner diameter 25 includes a plurality of (four in this example) guide grooves 25a formed at equal intervals around the front end and extending slightly before the front end, and between the guide grooves 25a and the inner diameter 24. A plurality (four in this example) of cams 26 formed on the end face are provided. Each guide groove 25a is flush with the inner peripheral surface of the inner diameter 24 having a large diameter as shown in FIG. 6 (c), and is fitted with a rib 31 of the extruded body 3 and a rib 51 of the latch 5, which will be described later. The front end of the groove is in contact with the extruded body side rib 31 and serves as a restricting portion that locks the forward sliding of the extruded body 3.

  Each cam 26 is provided between the guide grooves 25a. When a latch 5 described later slides from the guide groove 25a to the inner diameter 24 against an urging force, the cam 26 is fitted to the latch side cam 52. The locking cam portion 26a that locks the latch 5 against the biasing force, and the cam 52 using the biasing force applied to the latch 5 when the latch-side cam 52 is released from the cam portion 26a. The release cam portion 26b rotates and moves to the entrance of the next guide groove 25a.

  FIG. 6E shows a portion corresponding to the portion C in FIG. 6C as a modification of the housing 2 described above. In this modification, in the vicinity of the front end of the inner diameter 25 of the cylindrical portion 20, a ring-shaped groove 25 b that overlaps with the groove end of each guide groove 25 a and is deeper than the guide groove 25 a is formed, and an impact absorbing member 27 is attached to the groove 25 b. is doing. The shock absorbing member 27 is, for example, rubber or a soft elastic ring, and the inner periphery thereof is flush with the inner diameter 25 in a state where the shock absorbing member 27 is mounted in the groove 25b. In this structure, when the extruded body 3 is slid to the forefront with the guide groove 25 a and the rib 31 fitted to the housing 2, the rib 31 comes into contact with the impact absorbing member 27, so Even if the initial urging force is increased, the possibility of scratches at the time of contact and the impact sound can be reduced or eliminated. In addition, it is more preferable that such a shock absorbing member is used in place of the shock absorbing member 27 or in the rib 31 itself or the front side portion of the rib 31 together with the shock absorbing member 27.

  As shown in FIG. 7, the extruded body 3 includes an elongated bottomed cylindrical portion 30, a plurality of ribs 31 provided on the rear outer periphery of the bottomed cylindrical portion 30, and a tooth portion 33 provided on the rear end surface. have. The bottomed cylindrical portion 30 is formed to be thinner than the inner diameter 25 of the housing 2 and has a rounded end 33 for abutting. Each rib 31 is provided at a circumferentially equal position corresponding to the guide groove 25 a of the housing 2. The extruded body 3 is slidably assembled to the housing 2 in a state where each rib 31 is fitted in the corresponding guide groove 25a.

  FIG. 7 (d) has an impact absorbing member 35 with the extruded body 3 attached to the tip as a modified example of the extruded body 3 described above. A stepped peripheral surface 34a and an engagement groove 34a on the proximal end side of the stepped peripheral surface are provided around the distal end side of the pressing body 3, and an engaging recess is provided at the center of the distal end surface. On the other hand, the impact absorbing member 35 has, for example, a rubber or soft elastic cap shape, and has a claw portion 35a provided on the periphery of the opening and a protrusion 35b provided on the inner end surface. The shock absorbing member 35 is attached to the tip of the extruded body 3 so that the claw portion 35a engages with the engaging groove 34a and the projection 35b engages with the engaging recess. The presence of 34 a is flush with the outer peripheral surface of the extruded body 3. In this structure, since the extruded body 3 comes into contact with a moving body such as the door 11 via the impact absorbing member 35, even if the initial urging force of the urging member 4 is increased, there is a risk of scratching and impact sound at the time of contact. It can be eased or resolved.

  As shown in FIG. 8, the latch 5 is provided in a state where it is integrated with a short cylindrical portion 50 penetrating forward and backward, a plurality of ribs 51 provided on the outer periphery of the cylindrical portion 50, and the front end of each rib 51. And a locking portion 54 that is formed so that the inner diameter 53 of the inner diameter 53 is slightly smaller than the inner diameter on the front end side. Each rib 51 is provided at a circumferentially equal position corresponding to the guide groove 25 a of the housing 2. Each cam 52 is formed in a state where the front end of the rib 51 and the end face of the locking portion 54 are connected and the end face is in the width direction and is inclined in the clockwise direction. The above-described latch 5 is slidably assembled in a state where each rib 51 is fitted in the corresponding guide groove 25a after the extruded body 3 is arranged with respect to the housing 2.

  As shown in FIG. 9, the holding body 6 is provided with a bottomed cylindrical portion 60, a knob 61 provided on the rear end surface 62 of the bottomed cylindrical portion 60, and is provided in a cylinder so as to protrude from the inner bottom surface. It has the boss | hub part 63 and the pair of engaging part 64 which protrudes in the location which got in a little from the front end side. The bottomed cylindrical portion 60 can be inserted into the cylinder on the rear side of the housing 2. The boss portion 63 is provided at the axial center, and supports the shaft 7 in a state where the rear end side of the shaft 7 is press-fitted and fixed to the center hole 63a. A biasing member 4 is disposed around the shaft 7. The rear end of the coil spring which is the urging member 4 is locked to the end surface of the boss portion 63. For this reason, a plurality of coil locking ribs are provided on the outer periphery of the boss portion 63. The engaging portion 64 is a protrusion that is slidably fitted into the housing side adjusting groove 23. Reference numeral 60a denotes a notch provided at the front end of the bottomed cylindrical portion 60, and 62a denotes a die-cutting hole formed through the rear end face 62.

  The above holding body 6 is connected to the rear side of the housing 2 through the sliding groove 23 and the engaging portion 64 so that the front-rear position can be changed. In this operation, first, the shaft 7 is supported in the central hole 63 a of the holding body 6, and the coil spring as the biasing member 4 is supported on the shaft 7. The holding body 6 and the housing 2 are approached while the shaft 7 and the biasing member 4 are inserted into the housing 2, and each engaging portion 64 coincides with the entrance of the corresponding sliding groove side introduction groove 23 a. Positioned like so. Next, an example in which the holding body 6 is operated with respect to the housing 4 will be described. When the holding body 6 is pushed toward the housing 4 against the urging force of the urging member 4, each engaging portion 64 is handled. Slide forward along the introduction groove 23a. Thereafter, the holding body 6 is rotated in the clockwise direction, whereby each engaging portion 64 is slid from the introduction groove 23a to the main groove 23b, and the pressing force is released in this state. Then, the holding body 6 is slid rearward by the urging force of the urging member 4 until the engaging portion 64 is engaged with the housing 2 and is engaged with the rear end of the groove 23b, and the urging member 4 is initially urged. It will be connected in the state where power was minimized. The shaft 7 is moved and moved integrally with the holding body 6 while being supported by the holding body 6. The shaft 7 is a member that maintains a stable urging action of the urging member 4, but may be omitted.

(Operation) FIG. 3 schematically shows the pushing operation of the assist device 1 described above. In FIG. 3, the assist device 1 is a usage example in which the assist device 1 is attached to a corresponding portion of the main body 10 such as a storage via the housing-side attachment portion 22 and moves the door 11 from the closed position to the opening direction with an urging force. .
(1) First, FIG. 3A shows a state in which the pressing body 3 is projected to the maximum by the urging force of the urging member 4. In this protruding state, the pressing body 3 is prevented from coming off by the rib 31 abutting against the groove front end of the guide groove 25a. In the latch 5, the rib 51 is slid forward along the guide groove 25 a by the urging force of the urging member 4 and is in contact with the pressing body 3. Here, the biasing member 4 expresses an initial biasing force between the end surface of the holding portion side boss portion 30 and the locking portion 54 of the latch 5. In this structure, rattling between the housing 2 and the holding body 6 and rattling between the pressing body 3 and the latch 5 are absorbed by the initial urging force, and the holding body 6 and the latch with respect to the housing 2 are absorbed. 5. The pressing body 3 is integrally assembled as a unit.

(2) FIG. 3A shows a state immediately before the door 11 is moved in the direction of the arrow, that is, opened to closed, and hits the tip 33 of the extruded body 3 of the assist device 1. In the assist device 1, the urging member 4 accumulates and increases the urging force in the process in which the door 11 is moved from the state (a) in the closing direction (b) and (c). That is, the urging member 4 is reduced and displaced until the latch 5 is moved from the guide groove 25a to the inner diameter 24 side through the pusher 3 and accumulates the urging force. When the door 11 hits the main body 10 side as shown in FIG. 5C and releases the pushing force, the door 11 is slightly displaced (through this latch 5 and the extruded body 3 by the urging force of the urging member 4). In the example, N in (b) is moved in the opening direction only by about 1.5 to 2.5 mm), and the closed position in (b) is obtained with the N dimension away from the main body 10.

(3) In other words, in the latch mechanism of the present invention, when the door 11 releases the pushing force against the door 11 from the state (c), the latch 5 passes the inner diameter 25 via the pressing body 3 and enters the inner diameter 24. After that, the urging force of the urging member 4 slides again toward the inner diameter 25 side, that is, in the protruding direction. At that time, the latch 5 is slid in the protruding direction with a small angle rotation corresponding to the tooth shape of the tooth portion 32 by the cam action of the latch side cam 52 with respect to the pressing body side tooth portion 32, and the pressing body 3 has an inner diameter 25. As shown in the enlarged view (b), the cam 52 hits the housing-side locking cam 26a and is locked at the deepest corner of the cam 26a. Thus, the urging force accumulated in the urging member 4 is held.

(4) When switching the door 11 from the closed position in FIG. 3 (b) to the opening direction again, for example, when there is a locking means provided between the door 11 and the main body 10, after releasing the lock, (Immediately when there is no locking means) The door 11 is pushed in the direction of the arrow (c), that is, in the further closing direction, and the pushing force is released. Then, after the latch 5 is pushed to the inner diameter 24 side through the pressing body 3, the latch mechanism slides again toward the inner diameter 25 side, that is, the protruding direction by the urging force of the urging member 4. At that time, the latch 5 is slid in the protruding direction with a small angle rotation corresponding to the tooth shape of the tooth portion 32 by the cam action of the latch side cam 52 with respect to the pressing body side tooth portion 32, and the pressing body 3 has an inner diameter 25. The latch side cam 52 hits the release cam 26b, enters the guide groove 25a while being guided along the cam 26b, and slides along the guide groove 25a to make the pressing body 3 the same ( Switch to the protruding position a). The door 11 is pushed by the pressing body 3 and moved in the opening direction.

(5) FIG. 4 schematically shows the operation of the adjusting means of the present invention by changing the initial urging force of the urging member 4 constituting the assist device 1 described above. In this adjusting means, first, the holding body 6 is pushed to the housing 4 side against the urging force of the urging member 4 as shown in FIG. Then, each engaging part 64 is slid forward from the groove rear end of the corresponding main groove 23b. Subsequently, when the holding body 6 is rotated in the clockwise direction, each engaging portion 64 is slid from the groove tip of the main groove 23b to the sub groove 23c, and the pressing force is released in that state. Then, the holding body 6 is slid rearward by the urging force of the urging member 4 until the engaging portion 64 is engaged with the housing 2 and is engaged with the rear end of the sub-groove 23c. Change power to maximum.

(Second Embodiment) FIGS. 10 and 11 show a modified structure of the adjusting means provided in the holding body and the housing. In this description, the same reference numerals are given to the same members and parts as those in the above embodiment, and repeated descriptions are omitted as much as possible.

  The housing 1A of the second form has a rear end side that is slightly larger in diameter, and has an adjustment groove 28 that replaces the adjustment groove 23 in the rear diameter large portion. The adjustment groove 28 is a through groove, and is formed in a straight main groove 28a extending in the longitudinal direction of the cylindrical portion 20 and a sub-direction provided in a different direction, that is, a different peripheral direction from the substantially middle and front ends of the main groove 28a. It consists of a groove 28b and a sub-groove 28c.

  On the other hand, as shown in FIG. 11, the holding body 6A includes a shaft portion 65 that is slidably inserted into the cylinder of the housing 1A, and an insertion restricting flange portion 66a in which the rear end of the shaft portion 65 is enlarged. And a knob 66 protruding from the outer surface of the flange 66a. The shaft portion 65 includes a convex engagement portion 65a provided on the outer periphery, a spring arrangement cavity portion 65b provided from the front end toward the rear side, and an engagement hole provided further on the rear side of the cavity portion 65b. Part 65c. And the above holding body 6A supports the shaft 7 in a state where the engagement hole 65c is located at the axial center and the rear end side of the shaft 7 is press-fitted and fixed. The urging member 4 is disposed via the shaft 7 in the hollow portion 65b. The rear end of the coil spring as the biasing member 4 is locked to the step end surface between the engagement hole 65c and the cavity 65b. The engaging portion 65 a is a protrusion that is slidably fitted into the housing-side adjustment groove 28. The engaging portion 65a may be configured by a pin or a screw that is retrofitted to the shaft portion 65.

  FIG. 10 schematically shows the operation of the adjusting means of the present invention by changing the initial urging force of the urging member 4 constituting the assist device 1A. In FIG. 11, a state is assumed in which the assist device 1A is attached to a corresponding portion of the main body 10 such as a storage, for example, a case where it is desired to weaken the pushing urging force after long-term use. However, the initial urging force may be changed when the assist device 1A is manufactured, when it is marketed, or when it is attached to a door or main body. The change operation is performed in a protruding state (a state in which the accumulated urging force of the urging member 4 is released) in addition to the retracted state (a state in which the urging member 4 accumulates the urging force) as in this example. Also good. These are the same in the first and third embodiments.

(5-1) In this adjusting means, the engagement portion 65a is engaged with the front auxiliary groove 28c as shown in FIG. 10A, and the initial urging force of the urging member 4 is maximized, The state where the initial urging force is minimized by fitting the portion 65a to the rear end of the main groove 28a as shown in (c), and the engagement portion 65a as the sub-groove 28b on the rear side as shown in (b). By fitting, it is possible to select a state in which the initial biasing force is between the maximum and the minimum. For example, the change operation will be described with reference to an example of switching from the state shown in FIG. 11A to the minimum state shown in FIG. 11B. First, the holding body 6A is moved from the sub-groove 28b against the urging force of the urging member 4. Rotating in the direction of the groove 28a, the pushing force is released in a state where the engaging portion 65a enters the main groove 28a from the sub groove 28b. Then, as shown in FIGS. 10 and 11, the holding body 6 </ b> A is moved rearward by the urging force of the urging member 4 until the engaging portion 65 a hits the rear end of the main groove 28 a and is locked to the housing 2 </ b> A. Is slid. As a result, the biasing member 4 has its initial biasing force changed to the weakest mode.

(Third Embodiment) FIGS. 12 and 13 show a configuration in which the adjusting means provided in the holding body and the housing described above is further modified. Also in this description, the same members and parts as those in the above embodiment are denoted by the same reference numerals, and redundant descriptions are omitted as much as possible.

  The housing 1B of the third form has a nut 8 attached to the inner periphery of the rear-side large-diameter portion with the rear end side being slightly larger in diameter. The nut 8 has a plurality of claws 8a formed on the outer periphery together with the internal thread portion of the inner diameter, and the corresponding locking holes provided on the rear diameter large portion of the housing 1B with the claws 8a provided on the rear diameter large portion. 29 is fixed by engaging.

  On the other hand, as shown in FIG. 12, the holding body 6B includes a male thread portion 67 that is screwed into a nut 8 mounted on the housing 1B, and a plug restricting flange portion 68a in which the rear end of the male thread portion 67 is enlarged. And a knob 68 protruding from the outer surface of the flange 68a. The male screw portion 67 forms a spring arrangement cavity portion 67a provided from the front end toward the rear side, and an engagement hole portion 67b provided on the further back side of the cavity portion 67a. And the above holding body 6B supports the shaft 7 in the state which the engagement hole part 67b is located in the shaft center, and the rear end side of the shaft 7 is press-fitted and fixed. The urging member 4 is disposed via the shaft 7 in the hollow portion 67a. The rear end of the coil spring as the biasing member 4 is locked to the step end surface between the engagement hole 67b and the cavity 67a.

(5-2) FIG. 12 schematically shows the operation of the adjusting means of the present invention by changing the initial urging force of the urging member 4 constituting the assist device 1B. In this adjusting means, the initial urging force of the urging member 4 can be changed to an arbitrary value or steplessly within a predetermined range with respect to the first and second forms. That is, this changing operation will be described with an example in which the initial urging force is weakened from the state where the initial urging force of each of FIGS. 12 and 13 is maximized. It is rotated so as to protrude outward by screw feed of the male screw portion 67 with respect to the female screw portion of the nut 8 against the force. As a result, the initial urging force of the urging member 4 is weakened in proportion to the protruding amount of the holding body 6B as in the respective (b).

  As described above, the assist device according to the present invention can be variously changed except for the requirements specified in the claims, and can be used arbitrarily.

(A), (b) is a left end view and a top view of the assist device of the first embodiment. (A), (b) is the left end view and top view which show the said assist apparatus in the aspect which weakened the urging | biasing force (initial urging | biasing force). (A) A mode in which the assist device starts accumulating urging force as the moving body moves in the direction of the arrow, and (b) is a state in which the assist device accumulates urging force to the maximum and holds the accumulated urging force. (C) is a half cross-sectional view showing a state where the holding of the urging force accumulated by the assist device is released. (A) is a schematic external view of the said assist apparatus, (b)-(d) is a principal part schematic diagram which shows the operation point in the case of changing the urging | biasing force (initial urging | biasing force) of the assist apparatus. It is the schematic exploded view which decomposed | disassembled the said assist apparatus. The housing which comprises the said assist apparatus is shown, (a) is a top view, (b) is a left end view, (c) is a BB line expanded sectional view of (b), (d) is (a). A-A line expanded sectional view of (a), (e) is the principal part enlarged view which shows the modification which deform | transformed the C section of (c). The extrusion body which comprises the said assist apparatus is shown, (a) is a left end view, (b) is a top view, (c) is the EE expanded sectional view of (b), (d) is the said extrusion It is a figure which shows the modification of a body in the aspect similar to (c). The latch which comprises the said assist apparatus is shown, (a) is a left end view, (b) is a top view, (c) is a right end view, (d) is the FF expanded sectional view of (a). It is. The support body which comprises the said assist apparatus is shown, (a) is a left end view, (b) is a top view, (c) is a right end view, (d) is the DD line expanded sectional view of (c). FIG. The assist device of a 2nd form is shown, (a) is an aspect which made energizing force the maximum intensity, (b) is an aspect which made energizing force the middle intensity, and (c) is the intensity where energizing force is the minimum intensity It is a general | schematic external view each shown with the aspect made to. As an example of use of the assist device of FIG. 10, (a) is a cross-sectional view shown in the form of FIG. 10 (b), and (b) is a cross-sectional view shown in the form of FIG. 10 (c). The assist device of a 3rd form is shown, (a) is a schematic external view which each shows the aspect which made the urging | biasing force the maximum intensity | strength, and (b) each showed the aspect which made the urging | biasing force weaker than (a). As an example of use of the assist device of FIG. 12, (a) is a cross-sectional view shown in the form of FIG. 12 (a), and (b) is a cross-sectional view shown in the form of FIG. 12 (b).

Explanation of symbols

1, 1A, 1B ... assist device 2, 2A, 2B ... housing (main body, 20 is a cylindrical portion, 24, 25 are inner diameters)
3 ... Extruded body (30 is a cylinder part, 31 is a rib, 32 is a tooth part, 33 is a front-end | tip)
4 ... Biasing member 5 ... Latch (latch mechanism, 50 is a cylinder, 51 is a rib, 52 is a cam)
6, 6A, 6B ... holding body (60 is a cylinder part, 61 is a knob part, 63 is a boss part)
7 ... Shaft 8 ... Nut (8a is a claw)
23 ... Adjustment groove (Adjustment means, 23a is introduction groove, 23b is main groove, 23c is sub-groove)
25a ... guide groove 26 ... cam (latch mechanism, 26a is a locking cam portion, 26b is a releasing cam portion)
27 ... Shock absorbing member 28 ... Adjustment groove (Adjustment means, 28a is main groove, 28b, 28c are sub-grooves)
29 ... Locking hole 35 ... Shock absorbing member 64, 65a ... Engagement part (adjustment means)

Claims (7)

In an assist device that is provided on one of the movable body and the fixed body and assists the movement of the movable body by a biasing force when the movable body is moved between the first position and the second position of the fixed body. ,
In the process of moving the movable body to the first position or the second position, the pushing biasing force in the second position or the first position direction is accumulated and the accumulated biasing force is retained, A moving body assist apparatus comprising: a latch mechanism that releases the holding of the urging force by movement in the same direction; and an adjustment unit that changes the urging force.   The said adjustment means selectively changes the said urging | biasing force from the several setting part for strengths determined beforehand, The assist apparatus for moving bodies of Claim 1 characterized by the above-mentioned.   The said adjustment means changes the said urging | biasing force to arbitrary values or a stepless within a predetermined range, The assist apparatus for moving bodies of Claim 1 characterized by the above-mentioned. The assist device includes a cylindrical main body, an extruded body that is slidably disposed on the main body and is switched between a retracted state that is retracted into the main body and a protruding state that protrudes from the main body, and the extruded body is connected to one end of the main body. An urging member urging in a direction protruding from the latch, a latch interposed between the urging member and the extruded body, and a holding body supporting one end of the urging member,
The latch mechanism is provided in the main body and the latch, and the pusher can be switched between the retracted state and the protruded state using the biasing force of the biasing member,
The adjusting means is provided on one of the main body and the holding body and extends in a moving direction of the extruded body, a sub-groove extending in a different direction from a part of the main groove, and the main body and the holding body. An engagement portion that is provided on the other side and engages with the main groove and the sub-groove, and a fitting position of the engagement portion with respect to the main groove and the sub-groove is relative to the main body and the holding body. The assist device for a moving body according to claim 1, wherein the assist device is changed through a sliding and rotating operation. The assist device includes a cylindrical main body, an extruded body that is slidably disposed on the main body and is switched between a retracted state that is retracted into the main body and a protruding state that protrudes from the main body, and the extruded body is connected to one end of the main body. An urging member urging in a direction protruding from the latch, a latch interposed between the urging member and the extruded body, and a holding body supporting one end of the urging member,
The latch mechanism is provided in the main body and the latch, and the pusher can be switched between the retracted state and the protruded state using the biasing force of the biasing member,
The adjusting means is provided on one of the main body and the holding body and extends in the moving direction of the extruded body, and is provided on the other of the main body and the holding body and is screwed into the male screw section. An internal thread portion, and the connection position of the holding body with respect to the main body is changed through a relative rotation operation of the main body and the holding body in a screwed state of the external thread portion and the internal thread portion. The assist device for a moving body according to claim 1 or 3.   The assisting device for a moving body according to any one of claims 1 to 5, wherein the extruded body has an impact absorbing member provided on a protruding end side.   The extruding body is prevented from coming off by contact with a restricting portion provided on the extruded body and a restricting portion provided on the main body and maintained in the protruding state, and provided on at least one of the restricting portions. The mobile body assist device according to any one of claims 4 to 6, further comprising an impact absorbing member.

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