JPH044848U - - Google Patents
Info
- Publication number
- JPH044848U JPH044848U JP4453090U JP4453090U JPH044848U JP H044848 U JPH044848 U JP H044848U JP 4453090 U JP4453090 U JP 4453090U JP 4453090 U JP4453090 U JP 4453090U JP H044848 U JPH044848 U JP H044848U
- Authority
- JP
- Japan
- Prior art keywords
- ratchet
- drive shaft
- cam
- ratchet wheel
- rotatably 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.)
- Pending
Links
- 210000000078 claw Anatomy 0.000 claims description 2
- 230000007935 neutral effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Chair Legs, Seat Parts, And Backrests (AREA)
Description
第1図は、本考案によるランバサポート調整装
置を組み付けた自動車のフロントシートの要部を
示す切り欠き斜視図、第2図は、そのランバサポ
ート調整装置の、第1図の−線に沿う切断平
面図、第3図は、そのランバサポート調整装置の
分解斜視図、第4図は、そのランバサポート調整
装置の要部の、第2図の矢印方向から見た側面
図、第5〜7図は、そのランバサポート調整装置
の作動を説明するための説明図である。
1……シートバツク、2……ランバサポート、
3……サポートプレート、4……ランバサポート
調整装置、5……メインブラケツト、7……支軸
、8……回動プレート、10……ワイヤロツド、
11……リンクレバー、12……駆動軸、18…
…操作レバー、19……リターンスプリング、2
0……作動アーム、21……ラチエツトホイール
、25……ラチエツト、26a,26b……爪、
27……支持ピン、31……コイルスプリング(
ラチエツト回動機構)、32……歯、32a,3
2b……噛み合い部、33……カム、34……カ
ム面、37……係合突起。
Fig. 1 is a cutaway perspective view showing the main parts of a front seat of an automobile in which the lumbar support adjustment device according to the present invention is installed, and Fig. 2 is a cutaway view of the lumbar support adjustment device taken along the - line in Fig. 1. 3 is an exploded perspective view of the lumbar support adjustment device, FIG. 4 is a side view of the main parts of the lumbar support adjustment device, viewed from the direction of the arrow in FIG. 2, and FIGS. 5 to 7 FIG. 2 is an explanatory diagram for explaining the operation of the lumbar support adjustment device. 1... Seat back, 2... Lumbar support,
3... Support plate, 4... Lumbar support adjustment device, 5... Main bracket, 7... Support shaft, 8... Rotating plate, 10... Wire rod,
11... Link lever, 12... Drive shaft, 18...
...Operation lever, 19...Return spring, 2
0... Actuation arm, 21... Ratchet wheel, 25... Ratchet, 26a, 26b... Claw,
27...Support pin, 31...Coil spring (
ratchet rotation mechanism), 32...teeth, 32a, 3
2b...meshing portion, 33...cam, 34...cam surface, 37...engaging protrusion.
Claims (1)
ラケツトと、 そのメインブラケツトにより回転自在に支持さ
れ、外端に取り付けられた操作レバーによつて回
転操作される車体左右方向の駆動軸と、 基端が前記駆動軸に回転不能に連結され、その
駆動軸から半径方向に延びる作動アームと、 その作動アームを中立位置に向けて付勢するリ
ターンスプリングと、 前記駆動軸と同軸上に設けられ、回転自在に支
持されるラチエツトホイールと、 前記作動アームの先端に設けられ、前記ラチエ
ツトホイールの歯に噛み合う爪を有するラチエツ
トと、 前記ラチエツトホイールに一体的に設けられた
カムと、 一端がそのカムに当接し、そのカムの回転によ
つて他端に取り付けられたサポートプレートを前
後方向に移動させるリンクレバーと、 を備えたランバサポート調整装置において; 前記ラチエツトが、その両端に互いに反対方向
の爪を有する二股形状とされ、そのラチエツトの
中央部が前記作動アームの先端に回動可能に支持
されるとともに、 そのラチエツトと前記メインブラケツトとの間
に、前記作動アームが中立位置からいずれかの側
に傾いているとき、その作動アームの傾き方向に
前記ラチエツトを相対回動させるラチエツト回動
機構が設けられていて、 前記ラチエツトホイールの歯が、前記ラチエツ
トがいずれの方向に回動したときにもその爪と噛
み合い得る、両側に噛み合い部を有する形状とさ
れている、 車両用シートのランバサポート調整装置。[Scope of Claim for Utility Model Registration] A main bracket attached to the side of the seat bag, and a drive shaft in the left-right direction of the vehicle that is rotatably supported by the main bracket and rotated by an operating lever attached to the outer end. , an actuation arm whose base end is non-rotatably connected to the drive shaft and extends radially from the drive shaft; a return spring that urges the actuation arm toward a neutral position; and a return spring provided coaxially with the drive shaft. a ratchet wheel that is rotatably supported; a ratchet that is provided at the tip of the operating arm and has a pawl that engages with teeth of the ratchet wheel; and a cam that is integrally provided with the ratchet wheel; A lumbar support adjustment device comprising: a link lever having one end abutting the cam and moving a support plate attached to the other end in the longitudinal direction by rotation of the cam; It has a bifurcated shape with pawls in opposite directions, and the central part of the ratchet is rotatably supported by the tip of the actuating arm, and between the ratchet and the main bracket, the actuating arm is moved from the neutral position. A ratchet rotation mechanism is provided for relative rotation of the ratchet in the direction of tilt of its actuating arm when tilted to either side, the teeth of the ratchet wheel ensuring that the ratchet rotates in either direction. A lumbar support adjustment device for a vehicle seat that has a shape that has engaging parts on both sides that can be engaged with the claws even when the seat is moved.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4453090U JPH044848U (en) | 1990-04-27 | 1990-04-27 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP4453090U JPH044848U (en) | 1990-04-27 | 1990-04-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH044848U true JPH044848U (en) | 1992-01-17 |
Family
ID=31557919
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP4453090U Pending JPH044848U (en) | 1990-04-27 | 1990-04-27 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH044848U (en) |
-
1990
- 1990-04-27 JP JP4453090U patent/JPH044848U/ja active Pending
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