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1. 发明公开

EP0290238A1 An assembly for controlling displacement 失效
标题翻译： Höheneinstellvorrichtung。
公开(公告)号：EP0290238A1
公开(公告)日：1988-11-09
申请号：EP88304031.3
申请日：1988-05-04
申请人： ILLINOIS TOOL WORKS INC.
发明人： Strater, William H. , Lee, Chane W.
IPC分类号： A47C3/24 , A47C3/28
CPC分类号： A47C3/285 , A47C3/24
摘要： A displacement control assembly includes a rotatable lead screw 24 longitudinally extending within a tubular column 16. A nut 22 is threaded to the screw 24 for relative axial displacement of the screw and nut, for example, to adjust the height of a chair seat or similar fixture. A resilient brake structure 38,46 is carried by either the nut or the screw for resiliently biased, alternative locking and unlocking of the nut and screw in order selectively to prevent and allow relative rotation and relative axial displacement of the screw and nut. The lock allows the screw 24 and nut 22 to co-rotate without relative axial displacement so that the chair seat can be swivelled without altering the desired height. The assembly can be designed with the parameters correlated so that the chair seat can be lowered at uniform speed independently of the weight of the seat occupant.
摘要翻译：位移控制组件包括在管状柱16内纵向延伸的可旋转导螺杆24.螺母22螺纹连接到螺钉24，用于例如螺钉和螺母的相对轴向位移，以调节椅座或类似物的高度夹具。弹性制动结构38,46由螺母或螺钉承载，用于弹性偏置，可选择地锁定和解锁螺母和螺钉，以便选择性地防止并允许螺钉和螺母的相对旋转和相对轴向移位。该锁允许螺钉24和螺母22在不相对轴向位移的情况下共同旋转，使得椅座可以在不改变期望高度的情况下旋转。该组件可以被设计成具有相关的参数，使得座椅座椅可以独立于座椅乘客的重量以均匀的速度降低。

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