| 摘要 |
A pump for a brake system for increasing sealing performance between a piston and a bore as well as motion performance and durability of the piston and facilitating assembling efficiency of the piston. The pump includes a bore formed in a modulator block and connected to a suction port and discharge port, a piston installed in the bore to perform rectilinear reciprocating motions and having an oil flow path to move oil suctioned through the suction port toward the discharge port, an inlet valve to open and close the oil flow path in accordance with the motions of the piston, an outlet valve to selectively allow the discharge of compressed oil, and a fixing unit having a guide member provided around the piston to be coupled to the bore and adapted to guide the motions of the piston and a sealing member provided around the piston to be coupled to the bore and adapted to keep the bore and the piston in an air-tightness state.
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