公开(公告)号：US20160169309A1

公开(公告)日：2016-06-16

申请号：US14945660

申请日：2015-11-19

Applicant: MESSIER-BUGATTI-DOWTY

Inventor： Jean-Baptiste ROBIN ,  Robin LUCIENNE

IPC: F16D65/74 ,  B64C25/44

CPC classification number: F16D65/74 ,  B64C25/42 ,  B64C25/44 ,  F16D55/226 ,  F16D55/40 ,  F16D65/18 ,  F16D65/186 ,  F16D65/38 ,  F16D65/44 ,  F16D65/48 ,  F16D65/54 ,  F16D2121/02 ,  F16D2125/04 ,  F16D2125/06 ,  F16D2129/02

Abstract: The invention relates to a brake actuator for an aircraft hydraulic brake, which is intended to be added into one of the cavities of a brake ring, the actuator comprising a liner (1) designed to be housed sealingly in the cavity of the ring, a piston (3) mounted to slide sealingly in the liner along an axis of sliding (X) so as to apply a braking force on friction pads when a fluid is introduced under pressure into the cavity, and having a determined operational travel, a wear compensation device (10) which defines a position to which the piston retreats into the liner by means of a mobile stop (11) that can be moved forward by the piston as a braking force is applied, and an elastic return member (16) returning the piston towards the retracted position bearing against the mobile stop. According to the invention, the mobile stop is reduced to a friction member rubbing against the liner, such that one of the faces of the friction member serves as a stop defining the retracted position of the piston, and the other of the faces serves as a support for the elastic return member, the elastic member having, when compressed, a sufficient increase in force in order to be able to push back the mobile stop in the event that the piston is not in contact with the friction pads while its operational travel is already exhausted.

Abstract translation: 本发明涉及一种用于飞行器液压制动器的制动致动器，其旨在被添加到制动环的一个空腔中，所述致动器包括设计成密封地容纳在所述环的空腔中的衬套（1） 活塞（3），其安装成沿着滑动轴线（X）密封地滑动在所述衬套中，以便当流体在压力下被引入所述空腔中时，在摩擦垫上施加制动力，并且具有确定的操作行程，磨损补偿 装置（10），其通过可移动的止动件（11）限定活塞后退到所述衬套中的位置，所述移动止动件（11）作为制动力被所述活塞向前移动;以及弹性返回构件（16） 活塞朝着缩回位置抵靠移动止挡。 根据本发明，移动式止动件被还原成摩擦件抵靠衬套，使得摩擦构件的一个面用作限定活塞缩回位置的止挡件，另一个面部用作 支撑弹性返回构件，弹性构件在被压缩时具有足够的力的增加，以便在活塞不与摩擦垫接触的情况下能够推回移动止挡件，同时其操作行程为 已经耗尽