JPH047794Y2

JPH047794Y2 -

Info

Publication number: JPH047794Y2
Application number: JP1986141823U
Authority: JP
Priority date: 1986-09-18
Filing date: 1986-09-18
Publication date: 1992-02-28
Also published as: JPS6347746U

Description

【考案の詳細な説明】本考案は傾動できるようにした椅子背もたれの
取付構造に関する。[Detailed Description of the Invention] The present invention relates to a mounting structure for a tiltable chair back.

背もたれを適宜傾動できるようにした椅子は、
種々知られているが、構造が複雑なものが多く、
また傾きすぎるようなものもあつた。 A chair with a backrest that can be tilted as needed
Various types are known, but many have complex structures,
There were also some that seemed too tilted.

本考案は簡単な構造で経済的に作ることがで
き、程良く傾動するようにした背もたれの取付構
造に係るものである。 The present invention relates to a mounting structure for a backrest that has a simple structure, can be manufactured economically, and has a moderate tilting angle.

以下実施例と共に説明する。 This will be explained below along with examples.

背もたれ１は、好ましくは椅子２のフレームパ
イプ３の上端を覆うような延出部４を有し、該延
出部の下方の背もたれの側面は該フレームパイプ
の内側に対向する取付部５となつている。該取付
部５には、係止孔６と軸孔７を有するインサート
金具８を固着してあり、該軸孔７の周囲は側方に
突出してボス部９を形成している。上記取付部に
は、上記軸孔７を通して取付軸１０を固着してあ
る。図において、該取付軸は、リベツトで構成し
ているが、その他適宜の軸体で構成することもで
きる。該取付軸１０は上記フレームパイプ３の取
付孔１１に挿通し、揺動可能に取付けられてい
る。 The backrest 1 preferably has an extension 4 that covers the upper end of the frame pipe 3 of the chair 2, and the side surface of the backrest below the extension becomes a mounting part 5 facing the inside of the frame pipe. ing. An insert fitting 8 having a locking hole 6 and a shaft hole 7 is fixed to the mounting portion 5, and the periphery of the shaft hole 7 projects laterally to form a boss portion 9. A mounting shaft 10 is fixed to the mounting portion through the shaft hole 7. In the figure, the mounting shaft is constructed with a rivet, but it may also be constructed with any other suitable shaft body. The mounting shaft 10 is inserted into the mounting hole 11 of the frame pipe 3 and is swingably mounted.

上記取付軸１０の周囲には、コイルばね１２を
巻回してあり、該ばねの一端１３は図において下
方に延出し、フレームパイプ３の内壁に係止して
いるが、上方に延出して係止させることもでき、
また他端１４は上記背もたれ方向に屈曲し、上記
フレームパイプ３に設けた略Ｕ字状の開口部１５
に係止されかつ該開口部から上記背もたれの取付
部方向へ突出し、上記インサート金具８の係止孔
６に挿入されている。該開口部１５は、上記ばね
の他端１４が移動可能な開口幅を有し、その開口
縁に当接するまで上記コイルばね１２の端部１４
が移動できるので、該開口部の開口縁を調整する
ことによりばね１２の端部１４の移動量を調整す
ることができる。図において、該開口部１５は、
上記フレームパイプ３の上端に開口しているが、
該フレームパイプの側面に丸孔、角孔等を設けて
開口部としてもよい。上記フレームパイプ３の上
端にはキヤツプ１６を嵌着してある。 A coil spring 12 is wound around the mounting shaft 10, and one end 13 of the spring extends downward in the figure and engages with the inner wall of the frame pipe 3, but extends upward and engages the inner wall of the frame pipe 3. You can also stop
The other end 14 is bent toward the backrest, and has a substantially U-shaped opening 15 provided in the frame pipe 3.
The insert fitting 8 is engaged with the insert fitting 8, protrudes from the opening toward the mounting portion of the backrest, and is inserted into the locking hole 6 of the insert fitting 8. The opening 15 has an opening width that allows the other end 14 of the spring to move, and the end 14 of the coil spring 12 until it comes into contact with the opening edge.
Since the spring 12 can move, the amount of movement of the end 14 of the spring 12 can be adjusted by adjusting the opening edge of the opening. In the figure, the opening 15 is
Although it opens at the upper end of the frame pipe 3,
A round hole, a square hole, etc. may be provided on the side surface of the frame pipe to serve as an opening. A cap 16 is fitted onto the upper end of the frame pipe 3.

而して、上記背もたれ１は、取付軸１０で揺動
可能にフレームパイプ３に取付けられ、上記背も
たれがコイルばねの弾性力に抗して揺動しかつそ
の揺動範囲を規制するよう上記取付軸の周囲に巻
回したコイルばね１２の一端１４をフレームパイ
プ３に設けて開口部１５から突出させ、背もたれ
の側面に連結しているので、背もたれ１を後方に
押圧すれば、上記コイルばね１２の端部１４が上
記開口部１５の開口縁に当接する範囲で傾動し、
また押圧力を取除けば、該ばねの弾性作用により
起立状態に復帰する。 The backrest 1 is swingably attached to the frame pipe 3 by a mounting shaft 10. One end 14 of the coil spring 12 wound around the shaft is provided on the frame pipe 3, protrudes from the opening 15, and is connected to the side surface of the backrest, so that when the backrest 1 is pressed backward, the coil spring 12 is released. is tilted within a range where the end portion 14 contacts the opening edge of the opening portion 15;
When the pressing force is removed, the spring returns to the upright state due to the elastic action of the spring.

本考案は上記のように構成されているので、背
もたれを取付軸によつフレームパイプに取付ける
際、該取付軸にコイルばねを挿通し、該ばねの屈
曲した先端を開口部から突出させて背もたれの側
面に連結するだけで組み立てでき、構成が簡単で
経済的に得られ、その上、上記ばねは先端が開口
部の開口縁に当接する範囲で揺動するから、極端
に背もたれが傾動するようなことはなく、程度の
傾斜状態で停止し、背部をしつかりと保持でき、
座り易い椅子が得られる。 Since the present invention is constructed as described above, when attaching the backrest to the frame pipe using the mounting shaft, the coil spring is inserted into the mounting shaft, and the bent end of the spring is made to protrude from the opening. It can be assembled by simply connecting it to the side of the opening, making the structure simple and economical.Furthermore, since the spring swings within the range where the tip comes into contact with the opening edge of the opening, it is possible to prevent the backrest from tilting to an extreme degree. You can stop at a slight incline and hold your back firmly.
You will get a chair that is easy to sit on.

[Brief explanation of drawings]

図面は本考案の実施例を示し、第１図は斜視
図、以下拡大して示し、第２図及び第３図は主と
して背もたれの端部の分解斜視図及びセツトした
状態の斜視図、第４図はインサート金具の断面
図、第５図は背もたれの取付部の断面図、第６図
は傾動状態を示す説明図である。１……背もたれ、３……フレームパイプ、１０
……取付軸、１２……コイルばね。 The drawings show an embodiment of the present invention; FIG. 1 is a perspective view, the following is an enlarged view, FIGS. 5 is a sectional view of the insert fitting, FIG. 5 is a sectional view of the mounting portion of the backrest, and FIG. 6 is an explanatory view showing the tilting state. 1... Backrest, 3... Frame pipe, 10
...Mounting shaft, 12...Coil spring.

Claims

[Scope of utility model registration request]

A mounting shaft is provided on the side of the backrest, the mounting shaft is swingably mounted on the frame pipe, a coil spring is wound around the mounting shaft, one end of which is locked to the inner wall of the frame pipe, and the coil spring is The other end is bent in the direction of the backrest, an opening is formed in the frame pipe having an opening width through which the other end of the spring can move, and the other end of the spring protrudes laterally through the opening so that the other end of the spring can move toward the backrest. A mounting structure for the chair backrest connected to the side of the chair.