| 摘要 |
PURPOSE: A master cylinder is provided to minimize unnecessary retreat operation and braking cancellation delay by rapidly communicating the communicating hole of a piston and the flow path of an oil tank when a vehicle changes to a braking cancellation state. CONSTITUTION: A master cylinder comprises a cylinder main-body, a first piston(30) and a sealing member. The cylinder main body comprises an oil inlet port(27) and a liquid pressure chamber. The piston is installed at the inside of the bore of the cylinder main-body to move back and forth. The piston raises the inner pressure of the liquid pressure chamber. The sealing member is formed between the cylinder main-body and the piston to selectively block oil flow. |
