| 摘要 |
A pulsation dampening apparatus and a clutch master cylinder used for a hydraulic clutch operation system which has a hydraulic circuit. The apparatus has a housing which has a dampening chamber in the hydraulic circuit and a dampening assembly accommodated in the housing. The dampening assembly includes a working unit which dampens pulsations generated in the dampening chamber in the hydraulic circuit, an elastic retainer preloaded between the housing and the working unit to fasten the working unit into the housing by exerting a reaction force onto the working unit, and a force conversion mechanism which increases the reaction force of the elastic retainer in accordance with an urging force transmitted from the working unit to the elastic retainer.
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