JP2009148348A - Mounting structure for shaft member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure allowing appropriately mounting of a shaft member to a mounting place such as a wall surface afterwards. <P>SOLUTION: When a clearance is present between an end 1a of the shaft member 1 and the mounting place, a joint member 5 is fitted into the shaft member 1 in such a way as to be slidable but not to be rotated. By moving the joint member 5 from a first fitting area to a second fitting area where the quantity of overlapping with the shaft member 1 is reduced, the joint member 5 is restrained from moving again to the first fitting area where the quantity of overlapping is increased again when the joint member moves over the border between the first and second fitting areas by the engagement between an elastic piece 53 disposed in a part of the joint member 5 and the end face 1a of the shaft member 1. With this structure, a projection part 52, a part of the joint member 5, is made to project from the end 1a of the shaft member 1 to be fitted into a bush 6 with the projection and recession. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a shaft member mounting structure that can be suitably used for mounting a shaft member between opposing walls.

In general, when a shaft member is mounted across the opposing walls, the bracket is engaged with both ends of the shaft member as shown in Patent Document 1 and the bracket is attached to the wall, or the length of the shaft member is increased. While the dimension is longer than the internal dimension between the opposing walls, a hole is provided in the opposing wall and a bearing member is attached, and both end portions of the shaft member are inserted into the bearing member so that the shaft member is properly positioned. It is customary to engage the C-ring or E-ring to prevent it from coming off the opposing wall.
Japanese Utility Model Publication No. 6-33531

  However, the technique disclosed in Patent Document 1 cannot be applied to a case where the back side of the facing wall has a closed structure such as a side plate of furniture. Even with the latter method, it is not possible to prevent the removal at the penetrating end side, and even if the end portion of the shaft member is inserted into the opposing wall sequentially in a steadily manner, the overlap amount with the opposing wall can hardly be expected. There are problems such as making the retaining structure difficult due to shallower hooks.

  The present invention has been made paying attention to such a problem, and is a shaft member mounting structure that enables rotation to be transmitted by appropriately mounting a shaft member to a mounting destination such as a wall surface even after retrofitting. It aims to realize.

  In order to achieve this object, the present invention takes the following measures.

  That is, the shaft member mounting structure according to the present invention is such that a joint member is slidably and non-rotatably fitted to the shaft member in a relationship in which a clearance exists between the end of the shaft member and the mounting destination. Is moved from the first fitting region to the second fitting region where the amount of overlap with the shaft member decreases, the first fitting increases again when the boundary between both regions is exceeded. It has a structure in which movement to the area is restricted by the engagement between the restricting portion provided on a part of the joint member and the shaft member, and this causes a part of the joint member to protrude from the end of the shaft member. It is characterized by being fitted with irregularities first.

  If comprised in this way, it can be made to function effectively as a part of shaft member by enabling integral rotation with a shaft member, complementing the dimension of a shaft member with a joint member. Since the overlap amount between the joint member and the shaft member in the mounted state and the fitting amount of the unevenness between the joint member and the mounting destination can be set to appropriate values, respectively, the shaft can be Even if the members are not inclined, even if the attachment destination is a hollow plate with a closed inner space, an appropriate attachment state can be realized. It is not necessary to dare to process the shaft member itself.

  In order to effectively mount the shaft member between the opposing walls having a fixed internal dimension, the shaft member has a clearance between the both ends of the shaft member and a pair of mounting destinations facing each other. A joint member is slidably fitted to both ends of the member, and each of the joint members is moved from the first fitting region to the second fitting region, whereby a part of each joint member is moved to the shaft member. What is necessary is just to make it protrude from an edge part and to fit in the attachment destination corresponding to an unevenness | corrugation.

  In order to properly prevent the shaft member from rattling in the axial direction in the mounted state, elasticity is applied to the restricting portion, and in the mounted state, the restricting portion is elastically engaged with the shaft member along the axial direction. It is effective to maintain this state.

  In order to facilitate the work at the time of initial fitting or removal of the shaft member from the attached state, it is desirable to provide a restriction release operation part for releasing the restriction on the shaft member in association with the restriction part. .

  As a specific aspect of the restricting portion, the restricting portion is an elastic piece that protrudes inward from the inner periphery of the shaft hole provided in the joint member. In the first fitting region, the elastic piece is the shaft member. When the joint member moves to the second fitting region by being pushed into the inner periphery of the shaft hole by the elastic member, the elastic piece protrudes inside the shaft hole and moves again to the first fitting region. In this case, the elastic piece has a structure in which the elastic piece is engaged with the engaging surface formed on the end surface or the outer periphery of the shaft member.

  Similarly, as a specific mode of the restriction release operation portion, a protruding piece for immersing the elastic piece protruding inward into the inner periphery of the shaft hole is provided in a part of the joint member, and the protruding piece is used as the restriction piece. It is preferable that the release operation unit be provided.

  In order to ensure a smooth rotation state of the shaft member, it is desirable to provide a bearing member that rotatably supports the joint member in the hole on the attachment side.

In order to properly maintain the elastic engagement state between the elastic piece and the shaft member, the bearing member is associated with the elastic piece of the joint member and assists the elastic force for the elastic piece to engage with the shaft member. It is effective to provide an auxiliary elastic part.
In order to effectively exhibit the effects of the restricting portion and the auxiliary elastic portion, it is preferable to provide the bearing member with a wall portion that restricts the movement of the joint member beyond the second fitting region.

  In the present invention, through the configuration described above, the end of the shaft member is closely opposed to the mounting destination such as a wall surface, and the joint member is partially protruded from the shaft member from that position and is fitted to the mounting destination with unevenness. Therefore, even if it is retrofitted between the wall surfaces, etc., the shaft member is accurately attached through a very simple structure and procedure, and the shaft member is rotated integrally with the shaft member while complementing the dimensions of the shaft member by the joint member. It is possible to provide a new and useful shaft member mounting structure that can function effectively as a part.

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

  The shaft member 1 to which the mounting structure of this embodiment is applied is for driving a link arm 2 as a pair of operating members attached to the casing A of the drawer-type storage furniture shown in FIG. These link arms 2 are rotationally driven by the shaft member 1 as shown in FIGS. 2 (a) → (b) so that the drawer a1 can perform its intended function, and are arranged on the side plate a2 in association with the link arm 2. The lock member 3 thus moved forwards and backwards, thereby realizing a locked state and an unlocked state with respect to the all lock mechanism 4 disposed on the side plate a2 in association with the lock member 3. The all-lock mechanism 4 is configured such that when the lock is released, the upper moving rod 41 moves upward in accordance with the pulling-out operation of one of the drawers a1, and the upward movement margin is as shown in FIGS. 2 (a) → (b). By being blocked in this way, the drawer operation of all drawers a1 is prohibited.

  And when attaching this shaft member 1 between the inner surfaces of the left and right side plates a2, a2, the mounting structure of the present invention is applied.

  As shown in FIG. 3, this attachment structure is such that a joint member 5 is slidably fitted to the shaft member 1, and this joint member 5 is attached to the inner surface of the side plate a2 as shown in FIGS. The bush 6 which is a bearing member is engaged with the concave and convex portions.

  The shaft member 1 has a polygonal cross section as shown in FIGS. 3, 5 and 6, and its longitudinal dimension L1 is set to a value smaller than the internal dimension L2 between the left and right side plates a2 and a2. .

  The joint member 5 is integrally molded with the link arm 2 to be driven, and the shaft insertion portion 51 is positioned on the shaft member 1 side with the link arm 2 interposed therebetween, and the protruding portion 52 is positioned on the side plate a2 side. .

  The shaft insertion portion 51 is formed by opening a polygonal shaft hole 51a into which the shaft member 1 is inserted so as to be integrally rotatable, on the inner end side, and the protruding portion 52 has a round hole shape continuous to the shaft hole 51a. The shaft hole 51b has a cylindrical shape having a shaft hole 51b. The shaft hole 51a is tapered so that the inner diameter on the opening end side is slightly increased so that the shaft member 1 can be easily inserted. Has a slightly expanded inner diameter with respect to the shaft hole 51a. And the elastic piece 53 which is a control part as shown in FIG. 7 is provided in the state which was cut and raised toward the outer periphery of the shaft insertion part 51 from the outer periphery of the protrusion part 52. As shown in FIG. FIG. 7 is a partially enlarged longitudinal sectional view perpendicular to the paper surface of FIG. In the state where no external force is applied, the elastic piece 53 protrudes from the part of the outer periphery to the inner side of the shaft hole 52a as shown in FIG. When the piece 53b is pressed or pulled in the direction of the arrow f in the figure, it can be elastically deformed in the direction of immersing in the inner periphery of the shaft hole 52a as shown in FIG. Then, when the pressing force is released, it can be elastically restored again and protrude toward the shaft hole 52a as shown in FIG.

  When the joint member 5 is slidably fitted to the shaft member 1, the elastic piece 53 is immersed in the inner periphery of the shaft hole 52a by operating the projecting piece 53b as shown in FIG. 7 (a) → (b). In this state, the shaft member 1 is inserted into the shaft holes 51a and 52a as shown by arrows in FIG. In this state, the entire joint member 5 overlaps the shaft member 1, and the overlap amount is d1. From this state, the joint member 5 is moved in the direction opposite to the arrow in FIG. 8, that is, in the direction in which the protruding portion 52 side protrudes from the end portion 1a of the shaft member 1 as shown in FIGS. 8 (a) → (b). When the sliding is performed, the overlap amount decreases as d1 → d2, and is pushed in when the end 1a of the shaft member 1 is disengaged from the tip 53a of the elastic piece 53 as shown in FIG. The elastic piece 53 which has been elastically restored is projected to the inner peripheral side. That is, the region of FIG. 5A where the elastic piece 53 is pushed by the shaft member 1 is defined as a first fitting region, and the shaft member 1 is attached to the shaft insertion portion 51 while the elastic piece 53 protrudes. Assuming that the fitted region (b) is the second fitting region, the joint member 5 is changed from the first fitting region to the second fitting region where the amount of overlap with the shaft member 1 is reduced. In the case of movement, when the boundary between the two regions is exceeded, the movement of the same figure (b) → (a) to the first fitting region where the overlap amount increases again is the elastic piece 53 of the joint member 5. The tip 53a of the shaft and the end surface (end portion) 1a of the shaft member 1 are regulated by the engagement. In order to release this restriction, the protruding piece 53b described above may be operated as shown in FIGS.

  On the other hand, the bush 6 attached to the inner surface of the side plate a2 has a flange 62 at the open end of the bottomed cylindrical bush body 61 as shown in FIG. 4, and has a hole 60 provided in the inner surface of the side plate a2. The bush main body 61 is inserted into the base plate and attached so as not to drop off by an elastic claw or the like (not shown) in a state where the flange portion 62 is in contact with the inner surface of the side plate a2. The inner space of the bush 6 forms a recess 6a on the inner surface side of the side plate a2, and the protrusion 52 of the joint member 5 described above is inserted into the recess 6a of the bush 61 as shown in FIGS. The position where the part 21 of the link arm 2 abuts against the flange 62 which is the wall part of the bush 6 and the other part 22 abuts slidably against the inner surface of the side plate a2 is the insertion end of the protrusion 52. The inner diameter and depth of the bush main body 61 are set to dimensions that are sufficient to accommodate the protrusion 52 rotatably. The end face of the projecting portion 52 may be abutted against a wall portion 6b provided at the inner back of the bush 6 to serve as an insertion end. As shown in FIGS. 6 and 11A, the bush main body 61 has an elastic portion 61a in which a base end is fixed to the inner back of the bush main body 61 and a distal end that is a free end is extended toward an opening end. Is provided. FIG. 11A is a partially enlarged cross-sectional view perpendicular to the paper surface of FIG. 6 and corresponds to the surface of the enlarged cross-sectional view of FIG.

  In this embodiment, the shaft member 1 is rotated by an input from the outside, and thereby the link arm 2 which is a driving object is operated, so that the joint member 1 is inserted into the shaft member 1 as shown in FIG. Prior to this, the case 7 is inserted. As shown in FIGS. 5 and 6, etc., the case 7 is attached to the top plate lower surface a3 of the casing A, and the operating end of the locking portion a5 provided with the input end 71 on the uppermost drawer a1 shown in FIG. It is arranged at a position where it is engaged, and receives the locking operation force at the input end 71 to convert it into the rotational force of the shaft member 1 and also serves to hold the central portion in the longitudinal direction of the shaft member 1.

  Here, the attachment procedure of the shaft member 1 will be described.

  First, as shown in FIG. 4, the bush 6 is attached to the inner surface of the side plate a2 of the casing A (procedure 1). On the other hand, the case 7 and the joint member 5 are inserted through the shaft member 1 as shown in FIG. 3 (procedure 2), and the case 7 is attached to the top plate lower surface a3 as shown in FIG. 5 (procedure 3). In this state, a predetermined clearance (L2-L1) / 2 exists between each end 1a of the shaft member 1 and the inner surface of the side plate a2, as shown in FIGS. The protrusion 52 of the joint member 5 on one side is first inserted into the recess 6a of the bush 6 as shown by the arrow P1 in FIG. 9 (procedure 4), and the shaft member 1 is reversed as shown by the arrow P2 in the same figure. Pull to the side (Procedure 5). When the shaft member 1 is pulled, the joint member 5 relatively moves toward the end 1a side of the shaft member 1 as shown in FIGS. 8 (a) → (b). The elastic piece 53 buried like an anchor protrudes elastically at a position facing the end surface 1a of the shaft member 1 and functions as a return for restricting relative reverse movement. Further, the protruding portion 52 of the other joint member 5 is inserted into the recess 6a of the bush 6 as shown by an arrow P3 in FIG. 9 (procedure 6), and the shaft member 1 is placed on the opposite side as shown by an arrow P4 in FIG. (Procedure 7). Again, when the shaft member 1 is pulled, the other joint member 5 also moves relatively toward the end 1a side of the shaft member 1, as shown in FIGS. 8 (a) → (b). Accordingly, the elastic piece 53 buried like an anchor protrudes elastically to a position facing the end surface 1a of the shaft member 1 and functions as a return for restricting relative reverse movement. As a result, the state shown in FIG. 10 is obtained.

In this state, the distance from the end 1a of the shaft member 1 to the inner surface of the side plate a2 is s1, and the protrusion 52 of the joint member 5 protrudes from the end 1a of the shaft member 1 at the position where the elastic piece 53 protrudes inward. When the amount is s2, and the amount of insertion from the inner surface of the side plate a2 of the shaft member 1 at the maximum insertion position when the protruding portion 52 of the shaft member 1 is inserted into the bush 6, s3≈s1 + s3. In addition, the elastic piece 53 is set so as to be positioned in the vicinity of the boundary between the first fitting area and the second fitting area. Therefore, at any end 1a of the shaft member 1, the tip 53a of the elastic piece 53 elastically contacts the both end surfaces 1a of the shaft member 1 as shown in FIG. It becomes a state where it cannot move in the direction, and only a rotating operation is allowed. At this time, as shown in FIG. 11B, the auxiliary elastic portion 61 a provided on the bush 6 is set so as to cover the elastic piece 53 of the joint member 5 from the outside. The elastic piece 53 is surely pressed by the auxiliary elastic portion 61a even when it deteriorates, so that the inward protruding state is maintained.
In addition, the protrusion 53b mentioned above is located in the front side of the shaft member 1 in the attachment state shown in FIG. 9, and operation for cancellation | release of regulation is enabled from the front.

  As described above, the shaft member mounting structure according to the present embodiment has a clearance between the end 1a of the shaft member 1 and the inner surface of the side plate a2 that is the mounting destination (specifically, the recess 6a of the bush 6). Is fitted to the shaft member 1 in a slidable and non-rotatable manner, and the joint member 5 has a shaft as shown in FIGS. 8A to 8B from the first fitting region. By moving to the second fitting region where the overlap amount with the member 1 is decreased, the movement to the first fitting region where the overlap amount is increased again when the boundary between the two regions is exceeded. The elastic member 53 that is a restricting portion provided in a part of the member 5 and the shaft member 1 have a structure that is restricted. Thus, the protruding portion 52 which is a part of the joint member 5 is protruded from the end portion 1a of the shaft member 1 and is fitted to the bush 6 located at the attachment destination with unevenness.

  If it does in this way, while complementing the dimension of the shaft member 1 with the joint member 5, it can function effectively as a part of the shaft member 1 by enabling it to rotate integrally with the shaft member 1. And the overlap amount of the joint member 5 and the shaft member 1 in the attachment state shown in FIG. 10, and the fitting amount of the unevenness | corrugation of the joint member 5 and the bush 6 of an attachment destination can be set to an appropriate value, respectively. Therefore, even if the shaft member 1 is not inclined as in the case of the tendon system, and even when the attachment destination is a hollow plate with a closed inner space like the side plate a2, an appropriate mounting state can be realized. . The shaft member 1 itself is not required to be processed separately.

  Specifically, the joint member 5 is slidably fitted to the both ends 1a of the shaft member 1 in a relationship in which there is a clearance between the both ends 1a of the shaft member 1 and a pair of mounting destinations facing each other. These joint members 5 are sequentially moved from the first fitting region to the second fitting region, thereby causing the protruding portions 52 of the respective joint members 5 to protrude from the end portion 1a of the shaft member 1. Since the fitting 6 is fitted to the bushing 6 of the attachment destination with unevenness, the shaft member 1 is effectively attached to the opposite walls (between the inner surfaces of the side plates a2) having a fixed internal dimension even if it is retrofitted. be able to.

  Further, the elastic piece 53 which is a restricting portion has elasticity, and the elastic piece 53 is maintained in an elastically engaged state with the shaft member 1 along the axial direction in the attached state. Thus, the shaft member 1 can be appropriately prevented from rattling in the axial direction, and a stable and reliable mounting state can be realized.

  At that time, since the protruding piece 53b which is a restriction releasing operation part for releasing the restriction on the shaft member 1 is provided in association with the elastic piece 53 which is a restricting part, the shaft member 1 is in an initial fitting state or from an attached state. It can be used effectively when it is necessary to remove the.

  Specifically, the elastic piece 53 as a restricting portion protrudes inward from the inner periphery of the shaft hole 52a provided in the joint member 5, and in the first fitting region shown in FIG. When the shaft member 1 is pushed into the inner periphery of the shaft hole by the shaft member 1, the shaft member 1 is fitted to the shaft member 1, and when the joint member 5 moves to the second fitting region as shown in FIG. The elastic piece 53 has a structure that engages with the end face of the shaft member 1 when protruding to the inside of the hole 52a and trying to move again to the first fitting region. Since the protruding piece 53b, which is a restriction releasing operation part for immersing the elastic piece 53 protruding in the inner periphery of the shaft hole 52a, is provided, the desired restriction function and restriction releasing function are effectively realized with a simple structure. be able to.

  Furthermore, since the bush 6 which is a bearing member that rotatably supports the joint member 5 is provided in the hole 60 on the attachment destination side, the smooth rotation state of the shaft member 1 can be ensured.

In this case, the bush 6 is provided with an auxiliary elastic part 61a that is associated with the elastic piece 53 of the joint member 5 and assists the elastic force for the elastic piece 53 to engage with the shaft member 1. The elastic engagement state with the shaft member 1 can be appropriately maintained.
Furthermore, by providing the bush 6 with wall portions 6b, 62 and the like that restrict the movement of the joint member 5 beyond the second fitting region, the effect of the elastic piece 53 and the auxiliary elastic portion 61a as the restricting portion can be obtained. It can be effective.

  Furthermore, since the joint member 5 is integrated with the link arm 2 which is a driving object to be driven by the rotation of the shaft member 1, the number of parts can be reduced, and the shaft member 1 and the link arm 2 can be reduced. Can be directly fitted, so that an accurate interlocking state can be obtained.

The specific configuration of each unit is not limited to the above-described embodiment.
For example, when the shaft member has a stepped portion, the elastic piece may be engaged with the stepped portion as a locking surface.

  Furthermore, the effect similar to the above can be obtained also by an aspect in which one end side of the shaft member is directly inserted into an attachment target and a joint member is employed only on the other end side of the shaft member.

  In addition, the place of use, purpose, and use of the shaft member to which this mounting structure is applied can be variously modified without departing from the spirit of the present invention.

The perspective view of the drawer-type storage furniture to which one Embodiment of this invention is applied. The figure which shows the structure of the side plate inner surface of the housing | casing which comprises the storage furniture. The perspective view which shows the relationship between the shaft member and joint member in the embodiment. The perspective view which shows the attachment procedure to the side plate inner surface of the shaft member in the embodiment. The perspective view which shows the attachment procedure to the side plate inner surface of the shaft member in the embodiment. Sectional drawing which shows the relationship between the shaft member in the same embodiment in the middle of attachment, a coupling member, and a side-plate inner surface. The expanded sectional view which shows the structure of the joint member in the embodiment. Action | operation explanatory drawing which shows the relationship between the shaft member and joint member in the embodiment. The perspective view which shows the attachment procedure to the side plate inner surface of the shaft member in the embodiment. Sectional drawing which shows the relationship between the shaft member in the attachment state in the same embodiment, a joint member, and a side-plate inner surface. The figure which shows the relationship between the bush and joint member in the embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Shaft member 1a ... End part 2 ... Drive target (link arm)
5 ... Joint member 6 ... Bearing member (bush)
52a ... shaft hole 53 ... regulator (elastic piece)
53b ... Regulation release operation part (projection piece)
61a ... auxiliary elastic part

Claims (9)

In a relationship in which there is a clearance between the end of the shaft member and the attachment destination, the joint member is fitted to the shaft member so as to be slidable and non-rotatable, and the joint member extends from the first fitting region to the shaft member. When moving to the second fitting region where the wrap amount decreases, movement to the first fitting region where the overlap amount increases again when the boundary between both regions is exceeded is provided in a part of the joint member. The control part is regulated by the engagement between the restricting part and the shaft member, so that a part of the joint member protrudes from the end part of the shaft member and is fitted to the attachment destination with unevenness. The shaft member mounting structure. In a relationship in which there is a clearance between both ends of the shaft member and a pair of mounting destinations facing each other, fitting members are slidably fitted to both ends of the shaft member, and these joint members are respectively connected to the first members. 2. A part of each joint member protrudes from the end of the shaft member and is fitted to a corresponding attachment destination with unevenness by moving from the fitting region to the second fitting region. The mounting structure of the shaft member. The shaft member mounting structure according to claim 1 or 2, wherein elasticity is imparted to the restricting portion so that the restricting portion is elastically engaged with the shaft member along the axial direction in the attached state. The shaft member mounting structure according to claim 3, wherein a restriction release operation part for releasing the restriction on the shaft member is provided in association with the restriction part. The restricting portion is an elastic piece that protrudes inward from the inner periphery of the shaft hole provided in the joint member, and in the first fitting region, the elastic piece is pushed into the inner periphery of the shaft hole by the shaft member. When the fitting member moves into the second fitting region, the elastic piece protrudes inside the shaft hole, and when the elastic piece tries to move to the first fitting region again, the elastic piece becomes the end face of the shaft member. 4. The shaft member mounting structure according to claim 3, wherein the shaft member has a structure that engages with a locking surface formed on an outer periphery. 6. The shaft member mounting structure according to claim 5, wherein a projecting piece serving as a deregulation operation portion for immersing the elastic piece projecting inward into the inner periphery of the shaft hole is provided on a part of the joint member. 6. The shaft member mounting structure according to claim 5, wherein a bearing member that rotatably supports the joint member is provided in the mounting side hole. The shaft member mounting structure according to claim 7, wherein the bearing member is provided with an auxiliary elastic portion associated with the elastic piece of the joint member to assist an elastic force for engaging the elastic piece with the shaft member. The shaft member mounting structure according to claim 8, wherein the bearing member is provided with a wall portion that restricts movement of the joint member beyond the second fitting region.

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