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    • 81. 发明授权
    • Shock absorber
    • 减震器
    • US4203507A
    • 1980-05-20
    • US964611
    • 1978-11-29
    • Takao TomitaNobuo AnnoHitoshi Yamamoto
    • Takao TomitaNobuo AnnoHitoshi Yamamoto
    • F16F9/348
    • F16F9/348
    • A hydraulic shock absorber of the type having a cylinder and a piston with axial passages therethrough. The piston is mounted to slide within the cylinder. Valve plates having orifices therethrough are provided to control flow through the axial passages of the piston. Certain of the valve plates are situated to operate together with a variable effective orifice on the downstream side of the axial passages and to act with a fixed effective orifice as check valve plates when the flow is reversed. The composite valve thus defined offers a smooth and properly sloping velocity-resistance curve. The shock absorber also includes a foot valve assembly controlling flow between the interior of the cylinder and an annular oil reservoir outside the cylinder. The foot valve assembly may have two check valves for controlling flow through two sets of foot valve passages or it may employ a check valve spring which changes from a "V" shape to a flat shape to cover orifices in a check valve plate.
    • 一种液压减震器,其具有气缸和具有轴向通道的活塞。 活塞安装成在气缸内滑动。 提供具有穿过其的孔的阀板以控制通过活塞的轴向通道的流动。 某些阀板位于与轴向通道下游侧的可变有效孔口一起操作,并且当流动反向时与止回阀板一起作用于固定的有效孔口。 如此定义的复合阀提供了平滑和适当的倾斜速度阻力曲线。 减震器还包括一个脚踏阀组件,其控制气缸内部和气缸外部的环形储油器之间的流动。 脚踏阀组件可以具有两个止回阀,用于控制通过两组脚踏阀通道的流量,或者可以采用止回阀弹簧,其从“V”形变为平坦形状,以覆盖止回阀板中的孔。