公开(公告)号：US3690418A

公开(公告)日：1972-09-12

申请号：US3690418D

申请日：1971-04-21

Applicant: LLOYD RAYMOND DEVITT ,  GORDON MARVIN DEVITT

Inventor： DEVITT LLOYD RAYMOND ,  DEVITT GORDON MARVIN

IPC: F16D65/56

CPC classification number: F16D65/56

Abstract: The specification discloses an automatic slack adjuster all moving parts of which are enclosed for connecting a brake rod to an actuating cam shaft for a shoe brake in which the adjuster body is mounted on the actuating camshaft by a worm gear rotatable within the body. A worm shaft which on rotation positions said worm gear in the body extends exteriorly thereof to mount a first ratchet part fixed to the shaft and a second ratchet part rotatable thereon. A fixed housing extending from the body and about the worm shaft accommodates an axially slidable actuating member which develops relative rotational motion between the fixed housing and the second ratchet part when moved from an inner to an outer position or from an outer to an inner position. The actuating member is connected by a tension member to a fixed abutment or anchorage but is normally biased outwardly by a spring, the limit of the outward position being determined by a sealing cap in such manner that all operating mechanism and moving parts are enclosed.

Abstract translation: 本说明书公开了一种自动松弛调节器，其全部运动部分被封闭，用于将制动杆连接到用于制动器的致动凸轮轴，其中调节器主体通过在主体内可旋转的蜗轮安装在致动凸轮轴上。 蜗杆，其旋转地定位所述主体中的所述蜗轮，其外部延伸以安装固定在所述轴上的第一棘轮部分和可在其上旋转的第二棘轮部件。 从主体和蜗杆轴延伸的固定壳体容纳可轴向滑动的致动构件，当从内部位置移动到外部位置或从外部位置移动到内部位置时，该致动构件在固定壳体和第二棘轮部件之间产生相对旋转运动。 致动构件通过张力构件连接到固定的邻接或锚固件，但是通常由弹簧向外偏压，外部位置的限制由密封帽确定，使得所有的操作机构和运动部件被封闭。