JPH029153U - - Google Patents
Info
- Publication number
- JPH029153U JPH029153U JP8743288U JP8743288U JPH029153U JP H029153 U JPH029153 U JP H029153U JP 8743288 U JP8743288 U JP 8743288U JP 8743288 U JP8743288 U JP 8743288U JP H029153 U JPH029153 U JP H029153U
- Authority
- JP
- Japan
- Prior art keywords
- arm
- seat back
- back frame
- sub
- pivotally supported
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
- Seats For Vehicles (AREA)
Description
第１図は本考案装置の下方から見た断面図、第
２図は本考案装置を備えた座席の斜視図、第３図
はそのフレーム構造の斜視図、第４図は本考案装
置の一部省略した側面図、第５図は同、分解斜視
図である。
図中、３は腰椎支持部材、４はシートバツクフ
レーム、５はブラケツト、６はアーム、８はサブ
アーム、１１は操作螺子軸、１２はナツトブロツ
ク、１７は作動押圧片である。
Figure 1 is a sectional view of the device of the present invention seen from below, Figure 2 is a perspective view of a seat equipped with the device of the present invention, Figure 3 is a perspective view of its frame structure, and Figure 4 is a view of the device of the present invention. FIG. 5 is a side view with some parts omitted, and FIG. 5 is an exploded perspective view of the same. In the figure, 3 is a lumbar support member, 4 is a seat back frame, 5 is a bracket, 6 is an arm, 8 is a sub-arm, 11 is an operating screw shaft, 12 is a nut block, and 17 is an operating pressing piece.
Claims (1)
軸支され、自由端部において腰椎支持部材を支持
するアームと、 このアームの基端部に対し前後方向に向い合う
ように設けられ、上記シートバツクフレームに前
後方向に回動可能に軸支されるサブアームと、 このサブアームと上記アームとの間に介装され
、上記腰椎支持部材が前方へ付勢されるように上
記アームに弾性偏倚力を付与するスプリングと、 上記シートバツクフレーム側に軸支された操作
螺子軸に螺合し、この操作螺子軸の回転によつて
進退移動するナツトブロツクと、 上記シートバツクフレーム側に軸支され、一端
が上記ナツトブロツクと係合し、かつ他端が上記
サブアームの自由端部に当接される作動押圧片と
を有して成り、 上記ナツトブロツクの移動により上記作動押圧
片を回動させて上記サブアームを連続的に押圧し
、上記スプリングの弾性を変化させることにより
、上記腰椎支持部材の支持圧を無段階的に調整す
るようにしたことを特徴とする腰椎支持調整装置
。[Scope of Claim for Utility Model Registration] An arm that is pivotally supported by the seat back frame so as to be rotatable in the front-back direction and supports a lumbar support member at its free end; a sub-arm which is provided on the seat back frame and rotatably supported in the front-rear direction; a spring that applies an elastic biasing force to the arm; a nut block that is screwed onto an operating screw shaft pivotally supported on the seat back frame side and moves forward and backward by rotation of the operating screw shaft; and a nut block that is mounted on the seat back frame side. and an actuating press piece that is pivotally supported, one end of which engages with the nutblock, and the other end of which abuts against the free end of the sub-arm, and the actuator press piece is rotated by movement of the nutblock. A lumbar support adjustment device, characterized in that the support pressure of the lumbar support member is adjusted in a stepless manner by continuously pressing the sub-arm and changing the elasticity of the spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8743288U JPH0450843Y2 (en) | 1988-06-30 | 1988-06-30 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8743288U JPH0450843Y2 (en) | 1988-06-30 | 1988-06-30 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH029153U true JPH029153U (en) | 1990-01-22 |
| JPH0450843Y2 JPH0450843Y2 (en) | 1992-12-01 |
Family
ID=31312045
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8743288U Expired JPH0450843Y2 (en) | 1988-06-30 | 1988-06-30 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0450843Y2 (en) |
-
1988
- 1988-06-30 JP JP8743288U patent/JPH0450843Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0450843Y2 (en) | 1992-12-01 |
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