公开(公告)号：US20040050201A1

公开(公告)日：2004-03-18

申请号：US10244969

申请日：2002-09-17

Applicant: TRW Inc.

Inventor： Mark A. Cartwright ,  Greg B. Livengood

IPC: B62D001/18

CPC classification number: B62D1/184

Abstract: A steering column (10) includes a support (24) through which a steering column member (12) extends connected with a mounting bracket (68). A locking mechanism (130) locks the support (24) in any one of a plurality of positions relative to the mounting bracket (68). The locking mechanism (130) has a locking shaft (200) extending through first and second cams (148, 132) and the mounting bracket (68). The first cam (148) is rotatable relative to the locking shaft (200) and the second cam (132) and has a first cam surface (150). The second cam (132) has a second cam surface (134) facing the first cam surface (150). A bearing (166) includes a flexible cage (168) and a plurality of bearing members (170) rotatable relative to the cage engaging the first and second cam surfaces (150, 134). The locking mechanism (130) clamps the support (24) to the mounting bracket (68) when the first cam (148) is in a first position relative to the second cam (132). The support (24) is movable relative to the mounting bracket (68) and the locking shaft (200) is prevented from moving relative to the mounting bracket when the first cam (148) is in a second position relative to the second cam (132).

Abstract translation: 转向柱（10）包括支撑件（24），转向柱构件（12）延伸通过该支撑件与安装支架（68）连接。 锁定机构（130）将支撑件（24）相对于安装支架（68）锁定在多个位置中的任一个中。 锁定机构（130）具有延伸穿过第一和第二凸轮（148,132）和安装支架（68）的锁定轴（200）。 第一凸轮148可以相对于锁定轴200和第二凸轮132旋转并且具有第一凸轮表面150。 第二凸轮（132）具有面向第一凸轮表面（150）的第二凸轮表面（134）。 一个轴承（166）包括一个可旋转的保持架（168）和多个可相对于第一和第二凸轮表面（150,134）啮合的保持架转动的轴承部件（170）。 当第一凸轮（148）相对于第二凸轮（132）处于第一位置时，锁定机构（130）将支撑件（24）夹紧到安装支架（68）。 当第一凸轮（148）相对于第二凸轮（132）处于第二位置时，支撑件（24）可相对于安装支架（68）移动，并且防止锁定轴（200）相对于安装支架移动 ）。