JP2007135796A - Hanger mounting mechanism and chair - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To effectively eliminate the problem that hanger is damaged at an eye-catching part of a hanger support by its ascending/descending motion without deteriorating the holding force of a hanger. <P>SOLUTION: Rib-like projections 12c are provided at an inner edge portions 12b facing each other of a pair of hanger hanger supports 12 along its longitudinal direction, and concave sections 12d1 and 12d2 facing the clamping direction are provided at a plurality of portions of the projections 12c, while convex sections 32e capable of engaging with the concave sections 12d1 and 12d2 are provided on a presser 32. The hanger supports 12 are held by pressing presser sections A and B provided on a part of the presser 32 on a part of the hanger supports 12 at prescribed ascending/descending positions where the concave sections 12d1 and 12d2 are engaged with the convex sections 32e. The hanger supports 12 can be vertically moved while sliding on the front surfaces C of the convex sections 32e along the projections 12c in a state where the engagement is released. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a hanger mounting structure and a chair suitably used in an office or the like.

  Chairs used in offices and the like are often used with clothes on the backrest. However, if the seated person falls into the backrest in this state, the clothes are crushed and become out of shape. For this reason, an increasing number of recent chairs are equipped with a hanger function so that they can be put in and out of the backrest.

  For example, in Patent Document 1, a hanger support is sandwiched between a mounting base and a presser, and the presser has a leaf spring shape, and this presser is fixed with a screw. By doing so, both ends of the presser are elastically brought into contact with the back surface of the hanger column. Also, a part of the hanger strut has a recess, and the use position where the hanger strut protrudes upward when the hanger strut is raised and lowered and the recess engages with a cylindrical body provided at a predetermined position of the receiving part. And can be held in the storage position immersed downward.

On the other hand, in Patent Document 2, two hanger columns are inserted into an insertion part formed between the mounting base and the holding means, and a V-shaped engagement with an elastic body is formed in the insertion part. Stoppers are prepared. Then, using the elasticity facing the outside of this locking tool, both ends are elastically engaged with the recesses provided on the opposing edges of the hanger struts, and the hanger struts protrude upward and the storage is immersed downward It can be held in position.
JP 2004-159747 A JP 2005-168748 A

However, in the case of Patent Document 1, the hanger column moves up and down in a state where the back surface is strongly pressed against the plate spring-like presser, so that the outer periphery of the back side of the hanger column that is easily noticeable is easily damaged. This is a major factor that impairs the appearance. In this document, in order to avoid this, the hanger support is bent to avoid the contact between the upper or lower edge of the presser and the hanger support, but this reduces the contact, so the hanger holding power This leads to a decrease in

On the other hand, since the thing of patent document 2 will slide in the state in which the V-shaped locking tool was pressed to the inner edge part which is not conspicuous between hanger support | pillars, even if a damage | wound is attached, a place and a large external appearance There is no loss. However, since a large amount of spring force toward the outside of the V-shaped locking tool cannot be expected, if excessive force is applied to the hanger, the hanger may easily disengage from the predetermined lifting position, and the hanger may easily wobble. . If the inner space of the holding means is tight in order to prevent this, the result similar to Patent Document 1 that the outer periphery of the rear side of the hanger column is easily noticeable will be brought about.

The present invention has been made paying attention to such a problem, and intends to effectively solve the problem that the hanger column is easily noticeable by the lifting and lowering operation without reducing the hanger holding force. It is.

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

That is, the hanger mounting structure of the present invention is configured such that a pair of hanger posts hanging from the hanger body can be sandwiched between the mounting base and the presser and can be held at a predetermined lifting position. Rib-shaped projections are provided along the longitudinal direction on the inner edge portions of each hanger column facing each other, and convex portions or concave portions are formed in the holding direction at a plurality of locations of these projections, while the convex portions are formed on the pressing tool. Alternatively, by providing a recess or projection that can be engaged with the recess, and pressing a pressing portion that is set as a part of the pressing tool at a predetermined lifting position in which the recess and the projection are engaged with the recesses and projections against a part of the hanger column. While holding the said hanger support | pillar, it was made to be able to raise / lower a hanger support | pillar, sliding a part of presser along a protrusion in the state which the uneven | corrugated engagement was cancelled | released.

In this way, since the protrusions are positioned at the relatively inconspicuous inner edge between the hanger struts, even if the inner edge is damaged by sliding, it can effectively prevent the appearance from being greatly damaged. it can. Moreover, since the mounting base and the pressing tool sandwich the protrusion of the hanger strut, and depending on the pressing force of the pressing part, the uneven engagement force between the pressing tool and the protrusion can be increased, so excessive force is applied to the hanger body. Assuming that it is applied, a sufficient holding force is applied, and the hanger wobble can be effectively suppressed.

In order to increase the hanger holding force accurately and realize a smooth raising and lowering operation of the hanger column, the pressing part of the presser is pressed against the protrusion provided on the hanger column, and this pressing part performs uneven engagement. It is preferable that the protrusion is separated from the protrusion when released and the convex portion provided on the pressing tool is slid along the protrusion in this state.

In order to increase the hanger holding force more effectively by using the outer periphery of the hanger column and to avoid scratching the hanger column, the pressing part of the presser is attached to the outer periphery of the hanger column. It is desirable that the pressing portion is separated from the outer peripheral portion when the concave-convex engagement is released, and the convex portion provided on the pressing tool side is slid along the projection in this state.

As a specific embodiment of the present invention, the presser is mainly composed of an elastic body, and it is configured so that the concave-convex engagement between the concave portion and the convex portion is not released unless the elastic body is elastically deformed. The thing which makes the uneven | corrugated engagement force between the pressing tool and protrusion in a predetermined raising / lowering position and the pressing force from a press part on a hanger support | pillar through a body at least is mentioned.

Alternatively, as another specific embodiment of the present invention, the presser is mainly composed of a rigid body, and an elastic biasing body is attached to the rigid body, and the rigid body is displaced while the elastic biasing body is elastically deformed. Otherwise, the concave / convex engagement between the concave portion and the convex portion is not released, and through the elastic biasing member, the concave / convex engagement force between the pressing tool and the protrusion at least at a predetermined lift position and the pressing portion to the hanger column The thing which gives the pressing force is mentioned.

Since the present invention is configured as described above, it is extremely useful as an attachment structure for attaching a hanger to a backrest of a chair that is particularly exposed.

Since the present invention has the configuration described above, the hanger column can be securely held at the predetermined lift position using the pressing tool, and the hanger column is easily noticeable by the pressing tool during the lifting operation. It is possible to provide a useful hanger mounting structure that effectively avoids this and a chair using the same.

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

The hanger attachment structure of this embodiment shown in FIG. 1 is for attaching the hanger 1 to the backrest 2 of the chair Z, and a pair of hanger pillars 12 hanging from the hanger body 11 are shown in FIG. 2 and FIG. As shown, it can be sandwiched between the mounting base 31 and the presser 32 so that it can be raised and lowered, and can be held at a predetermined raising and lowering position.

If demonstrating it concretely, the hanger 1 will hang down the hanger support | pillar 12 which makes a pair downward from the lower end part of the hanger main body 11 arrange | positioned along the width direction of the backrest 2, The hanging end 12a is continuous in a U-shape. The flat cross section of the straight portion of the hanger column 12 basically has the same shape at an arbitrary height, specifically, a substantially outward trapezoidal shape that gradually increases in thickness from the outer edge portion 12a toward the inner edge portion 12b. I am doing. Then, a rib-like protrusion 12c extending along the longitudinal direction is provided at the central portion in the thickness direction of the inner edge portion 12b of each hanger support column 12 so as to project in a substantially trapezoidal shape in a plane cross section, and the rearward direction of the protrusion 12c. In this embodiment, the upper and lower portions of the surface 12c1 (that is, the surface facing the back of the chair) are stealed into a partial spherical shape to form the recesses 12d1 and 12d2. The recess 12 d 1 is positioned near the upper end of the hanger column 12, and the recess 12 d 2 is positioned near the lower end of the hanger column 12.

On the other hand, the mounting base 31 is in the shape of an oval plate when viewed from the back, has screw insertion holes 31a penetrating in the thickness direction in the vicinity of the left and right ends, and by screws V1 inserted through these screw insertion holes 31a. Screwed to the back of the backrest 2 of the chair Z. A screw hole 31b for attaching the presser 32 using the screw V2 is provided in the center portion of the attachment base 31 in the thickness direction, and the hanger support column is provided between the screw hole 31b and the left and right screw insertion holes 31a. A longitudinal groove-like column fitting portion 31c that is partially fitted to the front half of the 12 is recessed.

On the other hand, the presser 32 is composed mainly of an elastic body S such as a synthetic resin, a leaf spring, or a material such as steel, and is formed on the rear surface 12c1 of the protrusion 12c between the inner edge portions 12b, 12b of the hanger column 12. The base end piece 32a is disposed at the opposing position, and the front end piece 32c is connected to a position where the base end piece 32a is taken out rearward from the left and right ends of the base end piece 32a via the takeout portion 32b. The base end piece 32a is provided with a screw insertion hole 32d at a position corresponding to the screw hole 31b of the mounting base 31, and the recesses 12d1 and 12d2 are provided at both ends attached to the rear surface 12c1 of the hanger column 12. A protrusion 32e (see FIG. 2 and FIG. 3B) that can be fitted in is projected forward. FIG. 3A is a plan sectional view passing through a portion other than the convex portion 32e, and FIG. 3B is a plan sectional view passing through the convex portion 32e when the convex portion 32e engages with the concave portions 12d1 and 12d2. is there. The convex portion 32e of this embodiment has a partial spherical shape corresponding to the shape of the concave portions 12d1 and 12d2. The take-out portion 32b has a shape that is in close contact with the portion from the root of the protrusion 12c of the hanger column 12 to the outer peripheral portion 12e of the hanger column 12, and the tip piece 32c is between the inner edge portion 12b of the hanger column 12 and the outer edge portion 12a. The shape along the outer peripheral portion 12e is formed.

Then, the screw V2 inserted through the screw insertion hole 32d of the elastic body S which is the main body of the pressing tool 32 is fastened to the screw hole 31b of the mounting base 31, thereby setting the front surface at both ends of the base end piece 32a. The first pressing portion A is elastically contacted with the rear surface 12c1 of the protrusion 12c, and at the same time, the second pressing portion B set on the front surface of the tip piece 32c is elastically contacted with the outer peripheral portion 12e of the hanger column 12. In this state, the cover member 33 is mounted so as to cover the presser 32 and the mounting base 31.

When the hanger column 12 that is clamped and attached between the mounting base 31 and the presser 32 in this way is lifted and lowered as indicated by an arrow in FIG. 1, the recess 12 d 1 on the upper end side of the hanger column 12 is formed on the presser 32. The hanger body 11 is in a retracted state where the hanger body 11 is lower than the upper end 2a of the backrest 2 at the position where the convex portion 32e is engaged with the concave and convex portions, and the concave portion 12d2 on the lower end side of the hanger column 12 At this position, the hanger body 11 can be used to protrude from the upper end 2a of the backrest 2 and can be moved up and down with the concave-convex engagement between the concave portions 12d1, 12d2 and the convex portion 32e being released. Become. At the time of release, as shown in FIG. 3 (b) → FIG. 4 (b), the protrusion 32e is detached from the recesses 12d1 and 12d2 while the base end piece 32a is elastically deformed around the portion secured by the screw V2. It is necessary to ride on the rear surface 12c1 of the protrusion 12c, and it is necessary to apply an operating force to the hanger column 12, but if the operating force is turned back, the hanger 1 is held in a predetermined position. The holding force can be freely adjusted by the fastening force of the screw V2. Then, after the protrusion 32e rides on the rear surface 12c1 of the protrusion 12c, the tip portion C of the protrusion 32e slides along the protrusion 12c while being pressed against the rear surface 12c1 of the protrusion 12c. As shown in FIG. 3A → FIG. 4A, the first pressing portion A is separated from the rear surface 12c1 of the protrusion 12c, and the second pressing portion B is separated from the outer peripheral portion 12e of the hanger column 12. I try to keep them apart.

As described above, in the present embodiment, the pair of hanger columns 12 hanging from the hanger body 11 are sandwiched between the attachment base 31 and the pressing tool 32 so as to be lifted and held at a predetermined lift position. For this purpose, rib-like projections 12c are provided along the longitudinal direction on the opposing inner edge portions 12b of the respective hanger struts 12, and concave portions are formed in the clamping direction (specifically rearward) at a plurality of locations of these projections 12c. 12d1 and 12d2 are formed, while the pressing member 32 is provided with a convex portion 32e that can be engaged with the concave portions 12d1 and 12d2, and pressed at a predetermined lift position where the concave portions 12d1 and 12d2 and the convex portion 32e are engaged with each other. The pressing portions A and B set as a part of the tool 32 are pressed against a part of the hanger column 12 to hold the hanger column 12, and the tip C of the convex portion 32e is released in a state in which the uneven engagement is released. The hanger column 12 can be moved up and down while sliding along the projection 12c.

Thus, since the projection 12c is located in the inner part 12b side that is relatively inconspicuous in the part between the hanger struts 12 and 12, the projection 32e slides in a state in which the projection 32e is pressed against the projection 12c. By doing so, even if the rear surface 12c1 of the protrusion 12c is damaged, it is possible to effectively prevent the appearance from being greatly impaired. In addition, the hanger support 12 is sandwiched between the mounting base 31 and the pressing tool 32, and the uneven engagement force between the pressing tool 32 and the protrusion 12c at a predetermined lift position is effectively increased depending on the pressing force of the pressing portions A and B. Therefore, assuming that an excessive force is applied to the hanger body 11, a sufficient holding force is applied to ensure a stable use state, and the wobbling of the hanger 1 can be accurately suppressed.

In particular, the pressing portion A of the pressing tool 32 is pressed against the protrusion 12c provided on the hanger column 12, and when the concave and convex engagement is released, the pressing portion A is separated from the protrusion 12c, and the pressing tool is in that state. Since the convex portion 32e provided on the side 32 is slid along the projection 12c, the hanger holding force in the use state and the storage state is accurately increased, and the smooth raising and lowering operation of the hanger column 12 is also ensured. be able to.

In addition, the pressing portion B of the pressing tool 32 is attached to the outer peripheral portion 12e of the hanger column 12, and when the concave and convex engagement is released, the pressing portion B is separated from the outer peripheral portion 12e, and the state As described above, since the convex portion 32e provided on the pressing tool 32 side is slid along the projection 12c, the contact area is wider than the structure in which the pressing force is applied only from the pressing portion A. The hanger holding force can be increased more effectively by using the outer peripheral portion 12e of the hanger column 12 that can be secured, and it is also possible to effectively avoid the hanger column 12 from being damaged.

The presser 32 is fixed to the mounting base 31 by screws V2 inserted from the rear to the front through a gap between the left and right hanger columns 12, 12, and the presser 32 is pressed to the left and right sides of the fixing portion. Since the parts A and B are set, a space for securely attaching the presser 32 can be easily secured, and at the same time, a pair of hangers through the left and right pressing parts A and B. A pressing force can be applied to the columns 12, 12 evenly.

Moreover, since both the pressing parts A and B are provided on the single elastic body S which is the main body of the pressing tool 32, it is possible to effectively avoid an increase in the number of parts.

Specifically, the concave / convex engagement between the concave portions 12d1, 12d2 and the convex portion 32e is not released unless the elastic body S is elastically deformed. Through the elastic body S, the pressing tool 32 at least at a predetermined lift position is provided. And the projections 12c are provided with the concave-convex engagement force and the pressing force from the pressing portions A and B to the hanger column 12, so that the required hanger holding force can be effectively and continuously maintained without bringing in a separate biasing means. Can be demonstrated.

And the chair of this embodiment fixes the attachment base 31 to the back surface of the backrest 2 using the above-mentioned hanger attachment structure, and the hanger support | pillar 12 is installed between this attachment base 31 and the pressing tool 32. Since the hanger 1 is supported through the hanger 1, the hanger 1 can be effectively attached to the back surface of the backrest 2 having a large exposure without impairing the appearance.

The specific configuration of each unit is not limited to the above-described embodiment.

For example, in the above embodiment, the recesses 12d1 and 12d2 are formed on the protrusion 12c side and the protrusion 32e is formed on the pressing tool 32 side. However, as shown in FIG. 5, the protrusions 112d1 and 112d2 are formed on the protrusion 12c side. In addition, a recess 132e may be formed on the pressing tool 32 side. The convex portions 112d1 and 112d2 in FIG. 11 are a part of a cylinder whose column axis m is oriented in a direction perpendicular to the longitudinal direction of the projection 12c (that is, the facing direction of the left and right columns 12), and is rearward of the rear surface 12c1 of the projection 12c. The depression 132e on the side of the pressing tool corresponding to this has a shape of an opening window formed at the corner between the base end piece 32a and the take-out part 32b of the pressing tool 32. When configured in this manner, both ends of the base end piece 32a function as the pressing portion A as in the above embodiment, but the pressing portion A is provided on the protrusion 12c even after the concave-convex engagement is released. The protrusions 112d1, 112d2 or the protrusions 12c are slid with respect to the rear surface 12c1. In this case, the front-facing surface of the tip piece 32c is arranged close to the outer peripheral portion 12e of the support column 12 so as to prevent rattling of the entire hanger, and does not come into contact with the outer peripheral portion 12e of the support column 12 when moving up and down. It is desirable to keep The shape of the convex portions 112d1 and 112d2 can be expected to be smooth in the operation of the hanger column 12 when retracting to or from the predetermined lift position on the premise that the hanger holding force can be appropriately exhibited. . Of course, the concave portion may be formed into a partial spherical shape and the convex portion may be formed into a partial spherical shape as in the above embodiment.

  Further, as shown in FIG. 6, the pressing member 232 is mainly composed of a rigid body T, and an elastic biasing body 4 is attached to the rigid body T, and the rigid body T must be displaced while the elastic biasing body 4 is elastically deformed. For example, the concave / convex engagement between the concave portion and the convex portion is not released, and the concave / convex engagement force between the pressing tool 232 and the protrusion 12c and the pressing portion A at least in a predetermined lift position through the elastic biasing body 4. A pressing force from B or the like to the hanger column 12 may be applied. As described above, if the elastic urging body 4 is provided separately from the presser 232, the number of parts is increased, but the presser 232 is made to be more suitable for pressing, and the required uneven engagement force and pressing force are expressed. The appropriate elastic biasing body 4 to be obtained can be employed. The illustrated elastic biasing body 4 is in the form of a coil spring, but it goes without saying that it may be a leaf spring or the like.

  Furthermore, although the said embodiment set the press parts A and B in two places, even if it is only the press part A or only the press part B, it is possible to show | play the basic effect of this invention.

In addition, the shape of the convex portion and the concave portion is not limited to the above-described embodiment, and the purpose of use such as applying the hanger mounting structure of the present invention to a mounting object other than a chair does not depart from the spirit of the present invention. Various modifications are possible within the range.

The rear perspective view of the chair to which one embodiment of the present invention is applied. The disassembled perspective view which shows the hanger attachment structure of the embodiment. FIG. Action | operation explanatory drawing of the same embodiment. The figure corresponding to FIG. 2 which shows the modification of this invention. The figure corresponding to FIG. 3 which shows the other modification of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Hanger 2 ... Backrest 4 ... Elastic biasing body 11 ... Hanger body 12 ... Hanger support 12b ... Inner edge part 12c ... Protrusion 12d1, 12d2 ... Concavity 31 ... Mounting base 32 ... Pressing tool 32e ... Convex part 112d1, 112d2 ... Convex Part 232 ... Presser 132e ... Recess A, B ... Pressing part C ... Front face Z ... Chair

Claims (6)

A pair of hanger struts hanging from the hanger body is sandwiched between the mounting base and the presser so that it can be raised and lowered, and can be held at a predetermined lifting position,
Rib-shaped projections are provided along the longitudinal direction on the inner edge portions of each hanger column facing each other, and convex portions or concave portions are formed in the holding direction at a plurality of locations of these projections, while the convex portions are formed on the pressing tool. Alternatively, by providing a recess or projection that can be engaged with the recess, and pressing a pressing portion that is set as a part of the pressing tool at a predetermined lifting position in which the recess and the projection are engaged with the recesses and projections against a part of the hanger column. A hanger mounting structure characterized in that the hanger support can be moved up and down while holding the hanger support and sliding a part of the presser along the protrusion in a state in which the uneven engagement is released. The pressing part of the pressing tool is pressed against the protrusion provided on the hanger column, and this pressing part separates from the protrusion when the concave / convex engagement is released, and in this state, the convex part provided on the pressing tool side protrudes. 2. The hanger mounting structure according to claim 1, wherein the hanger mounting structure is slid along the hanger. The pressing part of the presser is attached to the outer peripheral part of the hanger column, and this pressing part is separated from the outer peripheral part when the concave-convex engagement is released, and the convex part provided on the presser side in this state is provided. The hanger mounting structure according to claim 1 or 2, wherein the hanger mounting structure is slid along the protrusion. The presser is mainly composed of an elastic body, and is configured so that the concave-convex engagement between the concave portion and the convex portion is not released unless the elastic body is elastically deformed. The hanger mounting structure according to claim 1, wherein a concave-convex engagement force and a pressing force from the pressing portion to the hanger column are applied. The presser is mainly composed of a rigid body, and an elastic urging body is attached to the rigid body. If the elastic urging body is elastically deformed and the rigid body is not displaced, the concave-convex engagement between the concave portion and the convex portion is not released. 4. The hanger according to claim 1, wherein the hanger is configured to provide at least a concave-convex engagement force between the pressing tool and the protrusion and a pressing force from the pressing portion to the hanger column through the elastic biasing body through the elastic biasing body. Mounting structure. The hanger mounting structure according to claim 1, wherein a mounting base is fixed or integrally provided on the back of the backrest, and the hanger is supported via a hanger column between the mounting base and the pressing tool. A chair characterized by letting it.

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