| 摘要 |
A pocket-type master cylinder is provided to reduce the number of parts and the production cost, secure an inside space of an engine room by reducing the length of the master cylinder, and minimize interference with peripheral devices. A pocket-type master cylinder comprises a cylinder body(100), a piston unit(200), a spring(300), intake ports(122,142), and exhaust ports(124,144). The cylinder body comprises an outer housing(110) and an inner housing(140). The outer housing has a cylinder form, one side of which is opened and the other side closed. The inner housing is disposed in the outer housing. One side of the inner housing is opened, and the other side is connected to the other side of the outer housing. The piston unit comprises an inner piston(220) mounted to one side of the inner housing, and an outer piston(210) mounted to one side of the outer housing, surrounding the inner piston. The spring is mounted between the cylinder body and the piston unit, in the cylinder body. The intake port inputs oil into the cylinder body therethrough. The exhaust port discharges the oil from the cylinder body therethrough. |
