| 摘要 |
A master cylinder is provided to move oil quickly from a supply chamber to a hydraulic chamber. A master cylinder comprises: a cylinder body including a supply chamber for supplying oil and a bore, at least one piston reciprocating in the bore, and a feeding hole(27) formed on the outer circumference of the piston for guiding oil from the supply chamber into the bore. The feeding hole includes an oil inlet(27a) through which the oil is flowed in, and an oil outlet(27b) through which the oil is flowed out. The diameter of the oil inlet is smaller than that of the oil outlet. |
