公开(公告)号：US20140137680A1

公开(公告)日：2014-05-22

申请号：US14075642

申请日：2013-11-08

Applicant: Messier-Bugatti-Dowty

Inventor： Ludovic LEGLIZE

IPC: B60G15/12 ,  F16H25/20

CPC classification number: B60G15/12 ,  B64C25/18 ,  B64C25/22 ,  F16H25/20 ,  F16H25/2021 ,  Y10T74/18648

Abstract: The invention relates to an actuator comprising a cylinder (1) in which a rod (2) is mounted to slide, the actuator having a screw (8) extending inside the rod to co-operate with a nut (7) secured to the rod, the screw being driven in rotation by a motor (10), the actuator being characterized in that a hydraulic chamber (CH) filled with hydraulic fluid is arranged inside the actuator by means of a floating piston (20) sliding in sealed manner against the rod inside of the actuator, the hydraulic chamber being in fluid flow communication with an accumulator (21) via a solenoid valve (22) that is controllable between a closed state in which the chamber is isolated from the accumulator, and a fluid-passing state in which the hydraulic chamber and the accumulator are in communication, calibrated resistance being exerted against the passage of fluid from the chamber towards the accumulator.

Abstract translation: 本发明涉及一种致动器，包括一个气缸（1），其中安装有杆（2）以滑动，致动器具有在杆内延伸的螺钉（8），以与固定在杆上的螺母（7）配合 所述螺杆由马达（10）旋转驱动，所述致动器的特征在于，通过浮动活塞（20）将致动器内的充满液压流体的液压室（CH）布置在所述致动器内，所述浮动活塞（20）以密封方式滑动 所述液压室经由电磁阀（22）与蓄能器（21）流体连通，所述电磁阀（22）可在所述室与所述蓄能器隔离的关闭状态和流体通过状态 其中液压室和蓄能器连通，校准的阻力被施加抵抗流体从腔室朝向蓄能器的通道。