JP4836531B2 - Member connection structure - Google Patents

Description

  The present invention relates to a structure for connecting a rod that moves forward and backward and an actuator that is detachably attached to the rod.

  Conventionally, there has been known a furniture in which an elevating top plate supported by a support member of an elevating mechanism having a built-in main body mechanism is provided on both side plates of an upper body of a front open case that houses a drawer. It has been.

Specifically, this type of furniture is provided with a long plate-like operation lever along the inside of the lower part of the support member, and the operation lever extends through the case from the vicinity of the lower surface of the lifting plate. The operation lever is attached to the support member so as to move in parallel in a direction approaching the pinion and the ratchet by operating the handles disposed on the lower surfaces of both sides of the elevating top plate and lifting the operation lever upward. Then, one side edge of the operation lever pushes the piece provided rotatably on the support shaft fixed to the case, and turns the piece against the elastic biasing force of the leaf spring, The claw is pulled away from the ratchet (see, for example, Patent Document 1).
Japanese Patent No. 3478291

  However, in such a case, for example, in order to simplify the assembly, the distal end portion is bent into an L shape while using a wire rod for the operation lever, and the L shape portion of the operation lever is formed. In the case where the fitting groove for fitting is provided in the piece piece so that these pieces are pulled together, there is a possibility that a problem such as disconnection occurs when the operation lever and the piece piece are distorted or the like.

  The present invention has been made paying attention to such problems, and the main purpose is to provide an excellent member connection structure that is easy to assemble and can ensure a high assembling strength without difficulty. It is to provide.

  That is, the member connection structure of the present invention is a structure for connecting a rod that moves forward and backward and an actuator that is detachably attached to the rod. The rod includes a rod body and the rod. A bending portion that bends from the distal end of the main body, and the actuator is configured to open the rod main body from the first direction so that the rod main body can be attached and to be fitted with at least a part of the rod main body in the attached state. A first fitting portion and a second fitting capable of opening the tip bent portion so as to be attachable from a second direction different from the first direction and fitting at least a part of the tip bent portion in the attached state. It is characterized by comprising a mounting part and an insertion part for inserting the tip bending part on the first fitting part side into the second fitting part side.

  If it is such, after assembling the rod and the actuator, after exposing the tip bending portion from the insertion portion to the second fitting portion side, at least a part of the tip bending portion becomes the second fitting portion. It can be carried out by a simple method of fitting and at least a part of the lid main body to be fitted to the first fitting portion. Moreover, in the assembled state, each fitting portion is opened in a different direction, and the rod body and the tip bending portion are in a relationship of bending with each other, so simply pulling the rod and the actuator is not enough. It will not come off.

  That is, it is possible to provide an excellent member connection structure that is easy to assemble and can ensure a high assembling strength without difficulty.

  In order to consider the moldability of the actuator, it is desirable that the first direction and the second direction are in a relationship of reversing approximately 180 degrees.

  As a desirable mode of the rod and the actuator of the present invention, the rod is formed by plastic deformation processing of a metal member having substantially the same cross-sectional shape in the longitudinal direction, and the actuator is elastically deformable. The thing formed with the synthetic resin is mentioned.

  If the first fitting portion and the second fitting portion are groove-shaped having a width dimension substantially matching the diameter of the rod, the rod and the actuator can be used without using a special fastening member. Can be suitably assembled.

  As described above, according to the member connection structure of the present invention, after assembling the rod and the actuator, after exposing the bent end portion from the insertion portion to the second fitting portion side, at least one of the bent end portions. It is possible to carry out by a simple method of fitting the part to the second fitting part and fitting at least a part of the main body to the first fitting part. Moreover, in the assembled state, each fitting portion is opened in a different direction, and the rod body and the tip bending portion are in a relationship of bending with each other, so simply pulling the rod and the actuator is not enough. It will not come off.

  That is, it is possible to provide an excellent member connection structure that is easy to assemble and can ensure a high assembling strength without difficulty.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  The member connection structure according to the present embodiment is applied to the wagon A with an elevator board shown in FIG. In addition, the figure is made into the whole schematic diagram which abbreviate | omits some wagon A with an elevating top plate, and is shown.

  The wagon A with a liftable top plate includes a housing B (corresponding to “furniture body”) and a liftable top plate C (“covered” provided on the top surface B2 side of the housing B and capable of moving up and down relative to the housing B. And a lifting device D having a rack and pinion mechanism that can lift and lower the lifting table C with respect to the housing B.

  As shown in FIGS. 1 and 2 (FIG. 2 is a partially simplified view of the plane of the housing B), the housing B has a left and right side surface portion B1, a top surface portion B2, a bottom surface portion, and a back surface. It is connected by the part, and the accommodation space for accommodating one or more drawers BH is opened forward. A front reinforcing portion B11 protruding inwardly at the front end portion is integrally provided on the side surface portion B1 by bending or the like, and is bent into a substantially convex shape in plan view on the rear end portion side, and the front reinforcing portion B11 is provided. A rear reinforcing portion B12 that protrudes inward substantially to the same extent is integrally provided by welding or the like, and a rail B13 (which may be a suspension rail) is placed over the front reinforcing portion B11 and the rear reinforcing portion B12. The drawer BH is slidably supported by the rail B13. And between the front reinforcement part B11 and the rear reinforcement part B12, the fixing member B14 for fixing the stationary member E mentioned later (equivalent to a "fixed frame") to the housing | casing B is provided. The fixing member B14 is bent into a substantially convex shape in a plan view from an attachment part B14a that can be attached to the side face part B1, and a front edge part and a rear edge part of the attachment part B14a, and the reinforcing parts B11, B12 A front edge protrusion B14b and a rear edge protrusion B14c having a protrusion dimension slightly smaller than the protrusion dimension are integrally provided, and a lifting member F ("" described later) is provided between the front edge protrusion B14b and the rear edge protrusion B14c. Elevating member accommodating space B14s that can accommodate a “movable frame” is formed, and is integrally provided on side surface B1 by welding or the like. Further, in the vicinity of both side edge portions of the top surface portion B2 of the housing B, an opening portion B21 that can be inserted into the elevating member accommodating space B14s is formed. Between the inner edge of the opening B21 and the fixing member B14, a space is formed in which a main body H1 of a stationary member E described later can be inserted. In addition, the drawer BH is a well-known thing which assembled | attached the end plate to the front-end part of the container formed by opening upwards.

  The lifting / lowering top plate C has a plan view shape substantially corresponding to the plan view shape of the housing B.

  FIGS. 3 to 5 (FIGS. 3A, 3B, and 3C) are a front view, a rear view, and a side view, respectively, of the lifting device D. FIGS. FIG. 5 is an overall perspective view of the lifting device D viewed from different angles, and FIG. 5 is a sectional view taken along the line xx in FIG. E, a lifting member F that moves up and down relative to the stationary member E and supports the lifting plate C, and a locked state that is provided between the stationary member E and the lifting member F and restricts the lifting and lowering movement of the lifting member F And a meshing mechanism G that can be unlocked to allow the lifting member F to move up and down.

  The stationary member E is formed of, for example, a single sheet metal, and is mounted on the stationary member main body H that is attached to the side surface portion B1 of the housing B, and the top surface portion B2 of the housing B that is attached to the upper end of the stationary member main body H. A cap member I (corresponding to a “cap”) that can be fitted into the formed opening B21 is provided.

  As shown in FIG. 6 (the figure is an overall perspective view of the stationary member main body H) and the like, the stationary member main body H mainly extends along the height direction and is a long main body having a substantially rectangular shape in front view. H1 and a part of a connecting member Q described later provided on the elevating member F can be exposed in a state where the elevating member F described later is assembled to the substantially central portion in the width direction of the main body H1. Window portion H3 that is cut out in a generally rectangular shape when viewed from the front, and the other side edge of window portion H3 from the leading edge of the upright piece that protrudes inwardly from one side edge portion of window portion H3. And a first meshing part H2 formed by providing a plurality of first tooth parts H21 protruding toward the part at predetermined intervals along the height direction. A plurality of mounting holes for mounting the stationary member main body H to the fixing member B14 with a predetermined mounting member such as a screw are formed at predetermined intervals on both side edges of the main body H1. In the present embodiment, the protruding direction of the first tooth portion H21 is set to a direction slightly inclined upward with respect to a virtual straight line perpendicular to the height direction of the stationary member body H, and between the adjacent first tooth portions H21. Is set to approximately 2 mm. An inward protruding portion H11 that protrudes inward and has a cap member attachment hole H11a for attaching the cap member I is provided at the upper end portion of the main body H1. Further, a portion near the lower end of the main body H1 is cut and raised inward in a substantially L shape in plan view, thereby forming a pair of holding portions H12 that can hold the elevating member F so as to be movable up and down. . Furthermore, an upper projecting portion H13 (corresponding to “periphery of the pinion holding portion”) projecting upward from the other portions and a synchronizing pinion V (corresponding to “pinion”) to be described later are formed at the upper end of the main body H1. A pinion round hole H14 (corresponding to a “pinion holding portion”) that can be caught by the boss portion V1 is formed.

  The cap member I is formed of, for example, a synthetic resin material as shown in FIGS. 3 to 5, 10, and the like, and can cover the upper surface side of the inwardly protruding portion H <b> 11 of the stationary member body H. , And a flange I2 that hangs downward from the edge of the upper surface covering portion I1 and can elastically hold the edge of the inward protruding portion H11 of the stationary member main body H. The upper surface covering portion I1 is formed with an elevating member insertion hole I1a (corresponding to an “elevating hole”) corresponding to the cap member attaching hole H11a and through which the elevating member F can be inserted, and the elevating member insertion hole I1a. It hangs downward from the edge and can be fitted into an opening B21 formed in the cap member mounting hole H11a and the top surface B2 of the housing B, and can be elastically engaged with each opening edge using the elastic claw I111. A hanging portion I11 and an upper protruding portion covering portion I12 (corresponding to a “falling prevention portion”) that can cover the upper protruding portion H13 of the stationary member main body H from the outside and inside thereof in a fitted state are provided.

  On the other hand, the elevating member F mainly includes, for example, an elevating member main body J formed by bending a sheet metal into a substantially U shape in plan view and having a height dimension larger than the stationary member main body H, and the elevating member main body J. A stay K that is provided at the upper end portion of the elevating plate and supports the elevating plate C, an operating portion L to which a predetermined operating force is applied, and a slider member that is provided in the elevating member main body J and that can slide along the width direction thereof. M, a second engagement portion N provided on the slider member M and engageable with the first engagement portion H2, and an operation force provided on the lifting member body J and applied to the operation portion L. The interlocking member P (corresponding to the “operator” of the present invention) that can move up and down with respect to the two meshing portions N and the slider member M, the slider member M and the interlocking member P are connected, and the interlocking member P moves up and down. To convert the slider member M into a sliding movement It is obtained by a member Q.

  As shown in FIG. 7 (the same figure (a), (b) is the whole perspective view which looked at the raising / lowering member main body J from each different angle) etc., the raising / lowering member main body J is in the state assembled | attached to the stationary member E. A flat plate portion J1 that can face the main body portion H1, a pair of side plate portions J2 projecting inward of the flat plate portion J1 from both side edge portions of the flat plate portion J1, and a substantially central portion in the height direction are substantially L-shaped in a side view. And a slider holding portion J3 that can be slid up and hold the slider member M so as to be slidable. In the present embodiment, two pairs of slider holding portions J3 each having a distal end extending in a direction approaching each other are provided at a predetermined interval in the width direction. It is set to be larger than the projecting dimension of each first tooth portion H21 provided in one meshing portion H2.

  The stay K is provided in the upper end part of the raising / lowering member main body J, and has a depth dimension substantially equivalent to the depth dimension of the raising / lowering top plate C (refer FIG. 1).

  As shown in FIGS. 3 to 5, 13, and the like, the operation unit L is mainly located at positions that can be adjacent to the lifting lever L1 that can be moved up and down with respect to the lifting member main body J and both side edges of the lifting lever L1. The stationary lever L2 is provided and cannot be moved up and down. The elevating lever L1 is connected to the upper end of a rod R having a lower end engaged with the interlocking member P.

  As shown in FIGS. 13 and 14, the elevating lever L1 is made of, for example, a synthetic resin material, and is positioned on the outer side of the flat plate portion J1 in a state of being held in the upper opening J4 of the elevating member body J. The first upright portion L11, the second upright portion L12 located on the inner side of the flat plate portion J1, the first upright portion L11 and the second upright portion L12 are connected to each other and between the side edges of the upper opening J4. This is an integrally molded product provided with a connection portion L13 having a width dimension slightly smaller than the first dimension and a first finger hook portion L14 projecting outward from the upper end portion of the first upright portion L11. The height dimension of the 1st standing part L11, the 2nd standing part L12, and the connection part L13, ie, the raising / lowering lever L1, is set smaller than the opening height dimension of the upper opening part J4. The second upright portion L12 is provided with a rod holding portion L12A that engages and holds the upper end portion of the rod R, and a priority protruding portion L12b that protrudes outward from other portions and can preferentially hit the flat plate portion J1. . The rod holding portion L12A includes an insertion portion L12A1 provided at both side edges of the second upright portion L12 and having an insertion hole L12A1a through which the rod R can be inserted, and an upper edge of the substantially central portion in the width direction of the second upright portion L12. And an upper edge protruding portion L12A2 and a lower edge protruding portion L12A3 protruding in a direction approaching each other from the lower edge, and the first rod portion R1 of the rod R inserted through the insertion hole L12A1a is connected to the upper end protruding portion and L12A2 and the lower edge The protrusion L12A3 can be elastically held.

  The rod R is formed by plastically deforming a metal member having a circular cross section of each part in the longitudinal direction. In the present embodiment, as shown in FIG. 5, the rod R includes a first rod portion R1 attached to the elevating lever L1, and a second rod that is bent at a substantially right angle from one end of the first rod portion R1 and extends downward. Part R2, a third rod part R3 bent substantially at right angles from the lower edge of the second rod part R2 and extending to the left in the figure, and a fourth rod bent substantially perpendicularly from one end of the third rod part R3 and extended downward A portion R4 (corresponding to “rod body”) and a fifth rod portion R5 (corresponding to “tip bent portion”) that is bent at a substantially right angle from the lower end edge of the fourth rod portion R4 and extends to the right in FIG. It is supposed to consist of. Further, the lifting lever L1 and the rod R are constantly urged in a direction that can be lowered together with the interlocking member P by the urging force of the spring S. Here, the spring S is configured such that the upper end is hooked on the interlocking member P and the lower end is hooked near the lower end of the flat plate portion J1.

  As shown in FIGS. 3 to 5 and FIG. 8 (FIG. 8 is an enlarged cross-sectional view of a main part of the lifting device D) and the like, the slider member M is formed of, for example, a synthetic resin material, In the upper part and the lower edge part of the first thick part M2 and the second thick part M3 that have a thin part M1 that is set thinner than other parts in the part, and can sandwich the thin part M1 in the width direction Further, a held portion M4 that can be slidably held by the slider holding portion J3 is provided. In addition, a first concavo-convex portion M5 is formed along the height direction on one side edge of the slider member M (side edge located on the interlocking member P side in the illustrated example). The first concavo-convex portion M5 is inclined at a predetermined angle with respect to the protruding direction of the first convex portion M51 and a pair of first convex portions M51 whose protruding end portions are flat, and is continuous with each first convex portion M51. And a pair of first inclined portions M52. And in this embodiment, the 2nd meshing part N is attached to the 1st thick part M2 located in the interlocking member P side among the 1st thick part M2 and the 2nd thick part M3.

  The second meshing portion N is formed of, for example, a thin metal material, and overlaps with the superposition portion N1 that can be superposed on the first thick portion M2 and the first tooth portion H21 of the first meshing portion H2 provided on the stationary member main body H. A plurality of corresponding second tooth portions N2 are integrally provided. A plurality of second tooth portions N2 are provided along the height direction, and the direction thereof is slightly below the virtual straight line perpendicular to the height direction of the elevating member body J so as to be able to mesh with the first tooth portion H21. The distance between adjacent second teeth N2 is set to approximately 2 mm. In the present embodiment, a first horizontally elongated hole extending in the width direction and a first vertically elongated hole extending in the height direction are formed in the overlapping portion N1 of the second meshing portion N, and the first horizontally elongated hole and the first By fitting the vertically long holes to the horizontal protrusions M21 extending in the width direction and the vertical protrusions M22 extending in the height direction provided in the first thick part M2 of the slider member M, the second tooth portion The projecting direction of N2 is inclined downward. That is, the first horizontally long hole, the first vertically long hole, the horizontal protrusion M21, and the vertical protrusion M22 constitute positioning means for positioning the mounting direction of the second engagement portion N with respect to the slider member M. Further, the first thick portion M2 is provided with a female screw protruding portion M23 that protrudes outward from other portions and has a female screw portion formed in the protruding direction inside, and the second meshing portion N is attached to the slider member M. In the state, the first round hole for female screw formed in the overlapping portion N1 can be inserted into the female screw protrusion M23. And in the state which attached the 2nd meshing part N to the slider member M, the 2nd tooth | gear part N2 does not superimpose on the 1st thick part M2 of the slider member M, but a thin part toward the 2nd thick part M3 The state jumps to M1. In the present embodiment, in order to facilitate the work of holding the held portion M4 on the slider holding portion J3, the other side edge portion vicinity region (the second thick portion M3 in the illustrated example) of the slider member M is provided. An elastic deformation portion M31 that can be elastically deformed in the height direction is provided.

  As shown in FIGS. 3 to 5, 8, 9, 12, etc., the interlocking member P is formed of, for example, a synthetic resin material and has a height dimension larger than that of the slider member M. A second concavo-convex part P1 provided along a height direction of the side edge (in the illustrated example, a side edge on the slider member M side) and corresponding to the first concavo-convex part M5, and a lower end portion of the rod R A rod holding portion P2 to be held and a spring hooking portion P3 to which an upper end portion of the spring S can be hooked are provided. Similarly to the first uneven portion M5, the second uneven portion P1 is inclined at a predetermined angle with respect to the pair of second protruded portions P11 whose protruding end portions are flat, and the protruding direction of the second protruded portion P11, and It has a pair of 2nd inclination part P12 which follows each 2nd convex part P11. In addition, one side edge portion vicinity region where the second uneven portion P1 is provided is set to be thinner than other portions, and the interlocking member P and a connecting member Q described later interfere with each other in the thin region. It is made to function as the interference avoidance part P4 which avoids that the raising / lowering movement of the interlocking member P and the sliding movement of the slider member M are controlled. The interference avoiding portion P4 is provided with a pair of guide protrusions P41 that protrude outward and are guided by guide grooves Q21 of the connecting member Q described later. The rod holding portion P2 is formed so that the fourth rod portion R4 can be attached from the first direction, and the first fitting portion P21 capable of fitting at least a part of the fourth rod portion R4 in the attached state, A second fitting portion P22 that can be opened from a second direction different from the first direction so that the fifth rod portion R5 can be attached, and at least a part of the fifth rod portion R5 can be fitted in the attached state; A third fitting portion P23 that is substantially straight with the first fitting portion P21 and is substantially orthogonal to the second fitting portion P22, and the first fitting portion P21. An insertion portion P2a for inserting a fifth rod portion R5 provided on the boundary with the third fitting portion P23 on the first fitting portion P21 side into the second fitting portion P22 side; It is made up of. In the present embodiment, the first direction and the second direction are reversed by approximately 180 degrees. Moreover, each fitting part P21-P23 is made into the groove-shaped thing which has the width dimension substantially corresponded to the diameter of the rod R. As shown in FIG.

  The connecting member Q is, for example, a synthetic resin material as shown in FIGS. 3 to 5 and FIG. 8 (the part surrounded by an imaginary line and attached with a pattern in FIG. 8 indicates a part of the connecting member Q). The first laterally elongated hole, the first vertically elongated hole, and the first round hole for the female screw formed in the second meshing portion N are substantially rectangular in the front view and have substantially the same height as the slider member M. Are formed with a second horizontal hole, a second vertical hole, and a second round hole for a female screw. The connecting member Q is provided with an inwardly bulging portion Q2 that is bulged inward from other portions, and guides the guide protrusion P41 of the interlocking member P to the inwardly bulging portion Q2. A pair of guide grooves Q21 to be obtained is formed. Each guide groove Q21 corresponds to the inclination angle of the first inclined part M52 and the second inclined part P12 and is separated by a predetermined dimension in the height direction, and each inclined piece. It consists of an upper connecting piece that connects the upper ends of the first inclined piece and the second inclined piece, and a lower connecting piece that connects the lower ends of the inclined pieces (first inclined piece and second inclined piece). It has a substantially rhombus shape when viewed from the front.

  The connecting member Q having such a configuration accommodates the guide protrusion P41 of the interlocking member P in the guide groove Q21, and the horizontal protrusion M21 of the slider member M in which the second meshing portion N is overlapped, The vertical protrusion M22 and the female screw protrusion M23 are fitted with the second horizontally long hole, the second vertical hole and the second round hole for female screw, respectively, and the screw inserted into the second round hole for female screw is the female of the female screw protruding part M23. By screwing the screw portions, the interlocking member P and the slider member M are connected to the slider member M in a connected state. In this attached state, the second meshing portion N is sandwiched between the slider member M and the connecting member Q, and each second tooth portion N2 of the second meshing portion N is covered with the connecting member Q.

  An upper half cover member T disposed at a position that can face the flat plate portion J1 of the lift member main body J is attached to the upper half portion of the lift member main body J by appropriate means, and the flat plate portion J1 and the upper half portion A synchronization rack U (corresponding to a “rack”) provided with a plurality of engagement claws along the height direction between the cover member T and the synchronization that can be rotated while being engaged with the synchronization rack U The pinion V for use is accommodated. The synchronization pinion V includes a pinion portion V0 that can be engaged with the engagement claw of the synchronization rack U, as shown in FIG. A boss portion V1 that bulges in two steps inward from the pinion portion V0 is provided at the center, and a synchronization shaft Z (corresponding to a “synchronous rolling shaft”) to be described later is provided on the boss portion V1. A shaft insertion portion V2 having a rectangular shape in front view that can be inserted is formed. A cutout portion T1 is formed in a substantially central portion in the width direction of the upper half cover member T so as to be cut out along the height direction from the vicinity of the upper end portion to the lower end portion, and the cutout portion T1 is located at a position across the width direction. The synchronizing pinion V is arranged, and the engaging claw of the synchronizing rack U faces the notch T1. Further, as shown in FIG. 5, a pair of rod holding portions Ta for holding the rod R so as to be able to advance and retreat is provided at the lower end portion of the upper half cover member T. The tip portions of the pair of rod holding portions Ta are separated to such an extent that the rod R can be worn. Further, the upper end portion of the upper half cover member T is in contact with a rod R urged downward by a spring S, and is used to define an initial position of an elevating lever L1 attached to the rod R. A contact portion Tb is provided. The abutting portion Tb is a rib-shaped portion having a downward U-shape. Furthermore, the upper half cover member T is attached to the rack holding rib Tc for holding the synchronization rack U and the second rod R2 to prevent the rod R from being displaced relative to the upper half cover member T. A misalignment prevention unit Td is provided (see FIG. 5).

  In order to assemble such an elevating member F to the stationary member E, the direction of the elevating member F with respect to the stationary member E is determined so that the upper half cover and the main body H1 of the stationary member main body H can be brought into contact with each other. Then, the elevating member F is inserted into the elevating member insertion hole I1a of the cap member I from above, and is held by the pair of holding portions H12 provided at the lower end portion of the stationary member main body H so as to be slidable. The stationary member E and the elevating member F, which are integrally assembled in this way, are respectively inserted into the pair of openings B21 formed in the top surface portion B2 of the housing B and incorporated in the housing B, and the elevating member F is moved up and down. The state in which the main body H1 of the stationary member main body H is accommodated in the member accommodating space B14s and is brought into contact with the front edge protruding portion B14b and the rear edge protruding portion B14c of the fixing member B14 provided on the side surface portion B1 of the housing B. Attach using a predetermined mounting member such as a screw. In addition, a cut-and-raised portion is formed at a predetermined portion of the front edge protruding portion B14b and the rear edge protruding portion B14c of the fixing member B14, and the predetermined portion of the main body portion H1 of the stationary member main body H is hooked so as to be inserted into these cut-and-raised portions. Accordingly, the stationary member E and the elevating member F may be attached to the housing B. By adopting such an attachment mode, it is possible to omit or reduce the trouble of screwing. Then, on the lower surface side of the top surface portion B2 of the casing B, the shaft insertion portion V2 of the synchronizing pinion V that is exposed from the pinion round hole H14 of each main body portion H1 is made of a synthetic resin rod having a square shape in cross section. The end portions of the synchronizing shaft Z are respectively inserted. As a result, as the elevating member F moves up and down, the synchronizing pinion V sequentially engages with the engaging claws of the synchronizing rack U while rotating synchronously via the synchronizing shaft Z, and the pair of left and right elevating members F are synchronized. And can move up and down. In addition, while providing the buffer member W formed, for example from a synthetic resin raw material in the lower end part of the raising / lowering member main body J, the raising / lowering member F is interfered with a part of the stationary member main body H in the predetermined site | part of the raising / lowering member main body J. There is provided a movement restricting portion for restricting further upward movement or downward movement. In the present embodiment, the screw heads are protruded laterally from the side plate portion J2 in a pair of screw holes provided in the side plate portions J2 of the elevating member body J so as to be separated from each other by a predetermined distance along the height direction. A screw is screwed and the screw head of this screw is caused to interfere with the holding portion H12 of the stationary member E, thereby restricting further upward movement or downward movement of the elevating member F (not shown). 15 (a) is an enlarged view of the main part of the lifting member body J, FIG. 15 (b) is an enlarged perspective view of the main part of the stationary member body H, and FIG. 15 (c) is the lifting member. As shown in the enlarged perspective view of the main part showing the assembled state of the main body J and the stationary member main body H), the elevating member main body J is provided with an inwardly raised and raised piece J5 that is cut and raised inward. Further, the elevating member F is further moved downward by abutting the inner cut and raised piece J5 with an outer cut and raised piece H15 cut and raised outwardly provided on the main body H1 of the stationary member main body H. You may make it regulate. In this case, a buffer member (for example, a thin plate-like rubber) may be provided on one or both of the inner cut and raised pieces J5 and the outer cut and raised pieces H15.

  Thus, in a state where the elevating member F is assembled to the stationary member E, the first meshing portion H2 of the stationary member E is formed between the first thick portion M2 and the second thick portion M3 of the slider member M of the elevating member F. The first tooth portion H21 located between them can mesh with each second tooth portion N2 of the second meshing portion N positioned at a position facing the thin portion M1 of the slider member M. When the first meshing part H2 and the second meshing part N are meshed with each other, the lifting movement of the elevating member F is restricted, while the meshing state between the first meshing part H2 and the second meshing part N is released. In this case, the lifting / lowering member F is allowed to move up and down. That is, the first meshing portion H2 and the second meshing portion N are used to form a meshing mechanism G that can take a locked state that restricts the lifting movement of the lifting member F or a unlocked state that allows the lifting movement of the lifting member F. is doing.

  In the present embodiment, the first meshing portion H2 and the second meshing portion N are sandwiched between the slider member M and the connecting member Q in a state where the first meshing portion H2 and the second meshing portion N can be meshed with each other. Restricts relative displacement in the thickness direction (see FIG. 8). That is, the connecting member Q also functions as a “holding member” that can hold the first engaging portion H2 and the second engaging portion N between the slider member M, and using the connecting member Q and the slider member M, It constitutes “relative displacement regulating means”.

  As shown in FIG. 9, the second meshing portion N releases the meshing state between the meshable position (see (a-1) in FIG. 9A) that can mesh with the first meshing portion H2 and the first meshing portion H2. When the operating force is applied to raise the lifting lever L1 of the operation portion L, the mesh releasing position is taken. When the operation force is stopped, the engagement position is set.

  Next, with reference to FIG. 9, a method and an action of moving the second meshing portion N between the meshable position and the mesh release position will be described. Note that (a-2) and (b-2) in FIG. 9 are enlarged views showing the same members (a-1) and (b-1) with the connecting member Q omitted.

  First, in order to move the second meshing portion N from the meshable position (see (a-1) in the figure) to the mesh release position (see (b-1) in the same figure), an operation of pushing up the lifting lever L1 upward. This is done by applying power. When the rod R and the interlocking member P are raised against the biasing force of the spring S in conjunction with this operating force, the height position of the interlocking member P with respect to the slider member M is displaced, and a first convex portion to be described later. The contact state between M51 and the second protrusion P11 is released, and the guide protrusion P41 provided on the interlocking member P is moved along the lower connecting piece and the first inclined piece of the guide groove Q21 of the connecting member Q. By guiding, the connecting member Q moves along the width direction in the direction approaching the interlocking member P using the interference avoiding part P4, and accordingly, the slider member M approaches the interlocking member P together with the connecting member Q. Slide along the width direction in the direction. At this time, the slider member M moves the second inclined portion P12 of the second uneven portion P1 along the direction in which the first uneven portion M5 and the second uneven portion P1 can engage with each other. The slider member M can be reliably moved by sliding on the first inclined portion M52 of the uneven portion M5. As a result, the second meshing portion N held by the slider member M cannot move in the direction approaching the interlocking member P, in other words, away from the first meshing portion H2, and cannot mesh with the first meshing portion H2. It is positioned at the mesh release position. When the second meshing portion N is positioned at the meshing release position, the connecting member Q is positioned at a position where the first meshing portion H2 cannot be covered, and the first meshing by the connecting member Q and the slider member M is performed. The sandwiched state of the part H2 is released. Moreover, the 1st uneven | corrugated | grooved part M5 and the 2nd uneven | corrugated | grooved part P1 take the state mutually engaged (refer the figure (a-2)).

  On the other hand, the movement of the second meshing portion N from the mesh release position to the meshable position is performed with the stop of the operation force, that is, the operation of releasing the hand from the elevating lever L1 (or weakening the operation force). When the hand is released from the lifting lever L1, the interlocking member P, the rod R and the lifting lever L1 are lowered to the original position (position before the operation force is applied) by the elastic return force of the spring S, and the interlocking member P is moved downward. Accordingly, the slider member M moves along the width direction in a direction away from the interlocking member P while sliding the first inclined portion M52 of the first uneven portion M5 and the second inclined portion P12 of the second uneven portion P1. Moving. At this time, the connecting member Q guides the guide protrusion P41 of the interlocking member P along the upper connecting piece and the second inclined piece of the guide groove Q21, thereby reliably moving the slider member M. Can do. As a result, the second meshing portion N held by the slider member M moves in a direction away from the interlocking member P, in other words, in a direction approaching the first meshing portion H2, and can mesh with the first meshing portion H2. Positioned at a possible position. When the second meshing portion N is positioned at the meshable position, each second tooth portion N2 of the second meshing portion N meshes with the first tooth portion H21 of the corresponding first meshing portion H2, while the slider member M The second convex portion P11 of the second concave and convex portion P1 provided on the surface and the first convex portion M51 of the first concave and convex portion M5 provided on the interlocking member P are in contact with each other with the flat protruding ends. The second engagement portion N is set so as not to move unexpectedly from the meshable position to the mesh release position (see (b-2) in the figure). That is, by using the first convex portion M51 and the second convex portion P11, by bringing the first convex portion M51 and the second convex portion P11 into contact with each other, the second meshing portion N can be engaged from the position. “Stopper means” is configured to prohibit the retreat movement to the disengagement position. Further, the interlocking member P can be moved up and down by the combination of the guide groove Q21 and the guide protrusion P41 and the combination of the first inclined portion M52 and the second inclined portion P12, and the second engaging portion N can be engaged. “Operation conversion means” that converts the movement from the position to the mesh release position or the movement from the mesh release position to the meshable position is configured.

  Hereinafter, a method of connecting the rod R and the interlocking member P will be described below.

  First, the fifth rod portion R5 of the rod R is positioned on the first fitting portion P21 side of the interlocking member P, and then the fifth rod portion R5 is inserted into the insertion portion P2a, and the second fitting portion P22 is inserted. Expose to the side. And if 4th rod part R4 is rotated in the direction orthogonal to the longitudinal direction, 5th rod part R5 can be fitted by the 2nd fitting part P22. Furthermore, from this state, if the fourth rod portion R4 is rotated about the axial center of the fifth rod portion R5, the fourth rod portion R4 is connected to the first fitting portion P21 and the third fitting portion. It can be made to fit in the mounting part P23, respectively.

  As described above, in the member connection structure Y according to the present embodiment, after assembling the rod R and the interlocking member P, the fifth rod portion R5 is exposed from the insertion portion P2a to the second fitting portion P22 side. The fifth rod portion R5 can be fitted to the second fitting portion P22, and at least a part of the fourth rod portion R4 can be fitted to the first fitting portion P21. Moreover, in the assembled state, the fitting portions P21 and P22 are opened in different directions, and the fourth rod portion R4 and the fifth rod portion R5 are in a relationship of bending with each other. And simply pulling the interlocking member P does not come off.

  That is, it is possible to provide an excellent member connection structure Y that is easy to assemble and can ensure a high assembling strength without difficulty.

  In addition, by rotating the fourth rod portion R4 in a direction orthogonal to the longitudinal direction in a state where the fifth rod portion R5 is positioned on the second fitting portion P22 side, the fifth rod portion Since R5 is fitted to the second fitting part P22, the assembly of the rod R and the interlocking member P is performed on the fifth rod part R5 from the insertion part P2a to the second fitting part P22 side. It can be performed by a very simple method such as twisting and stopping after being exposed to.

  Since the first direction and the second direction are in a relationship of reversing approximately 180 degrees, it is not necessary to make the molding die for the interlocking member P unnecessarily complicated, and cost reduction can be achieved. it can.

  Since the first fitting portion P21 and the second fitting portion P22 have a groove shape having a width dimension substantially matching the diameter of the rod R, the rod can be used without using a special fastening member. R and the interlocking member P can be assembled | attached suitably.

  The present invention is not limited to the embodiment described in detail above.

  For example, although the member connection structure Y is applied to the wagon A with a lifting plate, the application destination is not limited to this.

  Although the fourth rod portion is the rod body, the rod body is not limited to that of the present embodiment, for example, the first to fourth rod portions are the rod body.

  Further, the shape and configuration of the rod and the actuator (interlocking member) are not limited to those of the present embodiment, and can be appropriately changed according to the embodiment.

  Moreover, although each fitting part is made into the groove-shaped thing, as long as at least one part of a rod can be hold | maintained without a special member, the structure may be arbitrary.

  In addition, the specific configuration of each part is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

BRIEF DESCRIPTION OF THE DRAWINGS The whole schematic which abbreviate | omits and shows the wagon with a raising / lowering top plate which concerns on one Embodiment of this invention. The figure which simplifies and shows a part of plane of the housing | casing in the embodiment. The whole figure which abbreviate | omits and shows the raising / lowering apparatus which concerns on the same embodiment. The whole perspective view of the raising / lowering apparatus. Xx sectional view taken on the line in FIG.3 (c). The whole perspective view of the stationary member main body in the embodiment. The whole elevation member main part perspective view in the embodiment. The principal part enlarged view of the raising / lowering apparatus which concerns on the same embodiment. Action explanatory drawing. FIG. 3 is a trihedral view showing a cap member according to the same embodiment. The enlarged view of the attachment part of the pinion for a synchronization which concerns on the embodiment. The top view and bottom view which show the interlocking member which concerns on the same embodiment. The principal part expansion perspective view of the operation part which concerns on the same embodiment. The perspective view which shows the raising / lowering lever L1 which concerns on the same embodiment. The figure which shows the modification of the movement control part which concerns on the embodiment.

Explanation of symbols

R ... Rod R4 ... Rod body (fourth rod part)
R5 ··· Bend end (5th rod)
P: Actuator (interlocking member)
P21 ... first fitting part P22 ... second fitting part P2a ... insertion part Y ... member connection structure

Claims (4)

A structure for connecting a rod that moves forward and backward and an actuator that is detachably attached to the rod,
The rod comprises a rod body and a tip bending portion that bends from the tip of the rod body,
The actuator is
A first fitting portion that is openable to attach the rod body from a first direction and can be fitted with at least a part of the rod body in an attached state;
A second fitting portion that is openable so that the tip bent portion can be attached from a second direction different from the first direction, and at least a part of the tip bent portion can be fitted in the attached state;
A member connection structure, comprising: an insertion portion for inserting the distal end bending portion on the first fitting portion side into the second fitting portion side. The member connection structure according to claim 1, wherein the first direction and the second direction are reversed by approximately 180 degrees . The rod is formed by plastic deformation processing of a metal member having a substantially equal cross-sectional shape of each part in the longitudinal direction,
The member connection structure according to claim 1 , wherein the actuator is formed of a synthetic resin that is elastically deformable . 4. The member connection structure according to claim 3, wherein the first fitting portion and the second fitting portion are in a groove shape having a width dimension substantially coinciding with the diameter of the rod .

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