公开(公告)号：US3879007A

公开(公告)日：1975-04-22

申请号：US42287973

申请日：1973-12-07

Applicant: CATERPILLAR TRACTOR CO

Inventor： BARTON JAMES C ,  CHRISTENSEN JON C ,  MUELLER JAMES P ,  SPRINKLE LARRY W

IPC: B60N2/52 ,  A47B95/00

CPC classification number: B60N2/502 ,  B60N2/505 ,  B60N2/507 ,  B60N2/525 ,  B60N2/527 ,  Y10T137/87265

Abstract: An improved vehicle seat wherein a bottom cushion assembly is pivotally attached to a back and resiliently mounted upon a base by an oscillation damping member to control oscillation of said vehicle seat with respect to the base. The back is pivotally joined to the base by substantially parallel links which maintain the back at a constant angle of inclination with respect to the base independent of elevational displacement. A swing link, pivotally connecting the bottom cushion assembly to the base permits the bottom cushion assembly to pivot about an imaginary point forward of the seat approximating the knee joint of an operator to minimize movement of the operator''s feet relative to the vehicle. A hydraulic circuit associated with a hydropneumatic suspension for such a seat includes dual damping capabilities for accommodating both normal and high impact loads on the seat.

Abstract translation: 一种改进的车辆座椅，其中底部缓冲组件通过振动阻尼构件枢转地附接到后部并弹性地安装在基座上，以控制所述车辆座椅相对于基座的摆动。 背部通过基本上平行的连接部枢转地连接到基部，其将背部保持在相对于基部的恒定的倾斜角度，而与高度位移无关。 枢转地将底部坐垫组件连接到底座的摆动连接件允许底部坐垫组件围绕靠近操作者的膝关节的座椅的假想点枢转，以使操作者的脚相对于车辆的运动最小化。 与用于这种座椅的液压气动悬架相关联的液压回路包括用于容纳座椅上的正常和高冲击载荷的双重阻尼功能。