公开(公告)号：US5403069A

公开(公告)日：1995-04-04

申请号：US126207

申请日：1993-09-24

Applicant: Yasuhisa Inara ,  Yukifumi Yamada ,  Hidetoshi Nakane

Inventor： Yasuhisa Inara ,  Yukifumi Yamada ,  Hidetoshi Nakane

IPC: A47C7/46 ,  B60N2/02

CPC classification number: A47C7/462

Abstract: A lumbar support device includes a seat-back having a first upstanding frame and a second upstanding frame spaced therefrom in the lateral direction, a bilateral asymmetrical torsion spring having a first end portion which is rotatably supported by the first upstanding frame and a second end portion, a supporting plate mounted on the bilateral asymmetrical torsion spring, and a driving device disposed between the second upstanding frame and the second end portion of the bilateral asymmetrical torsion spring for moving the bilateral asymmetrical torsion spring in the direction of the thickness of the seat-back, wherein a degree of a deformation of the first end portion of the bilateral asymmetrical torsion spring is less than that of the second end portion of the bilateral asymmetrical torsion spring.

Abstract translation: 一种腰部支撑装置包括：具有第一直立框架的座椅靠背和在横向方向上与之隔开的第二直立框架;双侧不对称扭簧，具有由第一直立框架可旋转地支撑的第一端部和第二端部 安装在所述双侧非对称扭转弹簧上的支撑板，以及设置在所述第二直立框架和所述双侧不对称扭转弹簧的第二端部之间的驱动装置，用于沿所述座椅侧弹簧的厚度方向移动所述双侧非对称扭簧， 其中所述双侧不对称扭转弹簧的第一端部的变形程度小于所述双侧不对称扭转弹簧的第二端部的变形程度。