| 摘要 |
PURPOSE:To make it possible to release a clutch without increasing the volume of a hydraulic chamber, by furnishing the first piston at the hydraulic chamber side, and making an operation rod linked to a power piston penetrate through the first piston slidable freely, linking to the second piston. CONSTITUTION:In a manual cylinder 4, a manual piston 8 which consists of the first piston 6 and the second piston 7 is furnished, and a hydraulic chamber 5 is formed by the first piston 6 at the left side and the manual cylinder 4. At the rear side of the manual cylinder 4, a cylinder 15 of a pneumatic type booster 14 is connected unitary to the cylinder 4, in which an operation rod 17 of a power piston 16 arranged slidable is penetrated through a partition wall 18 between the manual cylinder 4 and the booster 14, the hydraulic chamber 5, and the first piston 6, and connected to the second piston 7 with a connecting pin 19.
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