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    • 82. 发明授权
    • Oil-hydraulic servo-motor
    • 油压伺服电机
    • US3946564A
    • 1976-03-30
    • US506901
    • 1974-09-17
    • Tadao Nakagawa
    • Tadao Nakagawa
    • B60T13/12B60T13/14F01K17/00
    • B60T13/144
    • An oil-hydraulic servo-motor, usable with an automotive brake, including a control piston slidably extending through the rear end wall of a power cylinder in aligned opposite relation to an output piston therein and forming together with the cylinder end wall a spool-type control valve which is operable to energize and de-energize the power cylinder. The control piston is axially movable normally within definite limits under the operator's input, and abutment means provided to limit the extent of advancing movement of the control piston is rendered inoperable automatically upon failure of an associated oil pressure circuitry to enable the control piston to drive the output piston directly under the operator's input. The oil pressure circuitry may be formed in two independently operable systems. Major features include simplicity of the valving mechansim and hence of the entire structure of the servo-motor and a highly improved reliability in operation.
    • 一种可用于汽车制动器的油压伺服电动机,其包括控制活塞,所述控制活塞可滑动地延伸穿过动力缸的后端壁,所述控制活塞与动力缸的后端壁对齐,并与缸体端壁一起形成阀芯型 控制阀,其可操作以对动力气缸通电和断电。 控制活塞在操作者输入下可以在一定范围内正常地轴向移动,并且提供用于限制控制活塞的前进运动的程度的邻接装置在相关联的油压回路故障时自动地变得不可操作,以使控制活塞能够驱动 输出活塞直接在操作员的输入下。 油压回路可以形成在两个可独立操作的系统中。 主要特征包括阀门机构的简单性以及伺服电动机的整体结构以及高度可靠的运行可靠性。