JPS58159957U

JPS58159957U - Headrest upper and lower adjustment mechanism

Info

Publication number: JPS58159957U
Application number: JP5676482U
Authority: JP
Inventors: 前田　勝利
Original assignee: 日本発条株式会社
Priority date: 1982-04-19
Filing date: 1982-04-19
Publication date: 1983-10-25

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は本考案による実施例を示す分解斜視図、第２図
は第１図の組立状態を示す斜視図、第３図は第２図の要
部を示す上面図、第４図は本考案による実施例の操作時
を示す要部の斜視図である。 ′１・・・ヘッドレスト、２．３・・・ヘッドレスト支
持棒、４・・・係止用環状溝、５・・・シートバック、
６゜７・・・案内ブツシュ、５ａ、　　７ａ・・・穴、
６ｂ、　　７ｂ・・・鍔部、６Ｃ９７Ｃ・・・割溝、６
ｄ・・・ばね装着溝、６ｅ・・・回転防止用突起、８．
９・・・ガイドブツシュ、８ａ・・・回転防止用切欠部
、１０・・・取付孔、１１・・・係止用ばね、ｌｌａ・
・・係合部、１２・・・ダイヤル、１２ａ・・・挿入孔
、１２ｂ・・・溝、１２Ｃ・・・係合溝。Fig. 1 is an exploded perspective view showing an embodiment of the present invention, Fig. 2 is a perspective view showing the assembled state of Fig. 1, Fig. 3 is a top view showing the main parts of Fig. 2, and Fig. 4 is a main FIG. 2 is a perspective view of the main parts of the inventive embodiment during operation; '1...Headrest, 2.3...Headrest support rod, 4...Annular groove for locking, 5...Seat back,
6゜7...Guide bushing, 5a, 7a...hole,
6b, 7b...flange, 6C97C...dividing groove, 6
d... Spring mounting groove, 6e... Rotation prevention protrusion, 8.
9... Guide bush, 8a... Rotation prevention notch, 10... Mounting hole, 11... Locking spring, lla.
...Engagement portion, 12...Dial, 12a...Insertion hole, 12b...Groove, 12C...Engagement groove.

Claims

[Scope of utility model registration request]

A headrest formed by forming a plurality of upper and lower locking annular grooves on one circumferential surface of a pair of left and right headrest support rods;
A guide bush for inserting the headrest support rod,
A hairpin-shaped locking spring is inserted into a spring mounting groove formed on the upper end flange of the guide bushing, a dial is rotatably mounted on the flange of the guide bushing, and the guide bushing is inserted and supported. It consists of a guide bushing welded to the seat back frame so that the locking mechanism can be locked by rotating a dial attached to the upper end flange of the guide bushing on the side into which the headrest support rod having the locking notch groove is inserted. A headrest upper and lower adjustment cylinder mechanism, characterized in that it is configured to adjust the vertical height of a headrest by opening a spring.