利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

2 条记录 (耗时 0.008 秒)

    Reciprocating actuator
    2.
    发明公开
    Reciprocating actuator 失效
    Bewegungsrichtung的电机。

    公开(公告)号：EP0428406A1

    公开(公告)日：1991-05-22

    申请号：EP90312442.8

    申请日：1990-11-15

    申请人： KABUSHIKI KAISHA YAMADA CORPORATION

    发明人： Saita, Seiji, c/o K. K. Yamada Corporation

    IPC分类号： F04B9/12 ,  F01L23/00 ,  F03C1/00

    CPC分类号： F04B9/1253 ,  F01L23/00 ,  F03C1/0076

    摘要： An actuator is driven in a first direction by equal working fluid pressures acting on different piston areas acting in opposite directions, and is driven in a second direction by applying equal pressures on both sides of one of the piston areas. Working fluid from an inlet port (71), acting in a working fluid chamber (27), on one side of the piston moves a valve plate (36), closing vent ports (33) and opening working fluid discharge ports (32), thereby permitting the working fluid to push the piston (21) in a first direction. Working fluid contained in the working fluid chamber (21) is exhausted from working fluid discharge ports (32) to the outside of the system through a working fluid discharge tube (52). When the movement of piston (21) reaches its limit, a valve plate (36) is engaged by a spring (41), thereby causing simultaneous closing of the working fluid discharge ports (32) and the opening of the vent ports (33). As a result of the opening of the vent ports (33), working fluid pressures in the working fluid chamber (27) and a second working fluid chamber (26) are equalised. The effective piston area facing the second chamber is greater than the effective area facing the first chamber so the direction of piston movement is reversed. The working fluid discharge pipe (52) is fluid-tightly fitted through the piston (21) so as to provide a discharge path of working fluid from the system.

    摘要翻译： 通过作用在沿相反方向作用的不同活塞区域上的相等的工作流体压力，致动器沿第一方向被驱动，并且通过在一个活塞区域的两侧施加相等的压力而在第二方向上被驱动。 从活塞的一侧作用在工作流体室（27）中的入口（71）的工作流体移动阀板（36），关闭通气口（33）和打开的工作流体排出口（32）， 从而允许工作流体沿第一方向推动活塞（21）。 包含在工作流体室（21）中的工作流体通过工作流体排出管（52）从工作流体排出口（32）排出到系统的外部。 当活塞（21）的运动达到极限时，阀板（36）由弹簧（41）接合，从而同时关闭工作流体排放口（32）和通气口（33）的打开， 。 作为通气口33的打开的结果，工作流体室27和第二工作流体室26中的工作流体压力相等。 面向第二室的有效活塞面积大于面向第一室的有效区域，因此活塞运动的方向相反。 工作流体排出管52通过活塞21流体密封，从而提供来自系统的工作流体的排出路径。