| 摘要 |
PURPOSE: A pump for a brake system is provided to improve durability and operating dependability by preventing a piston from being worn only at one side by rotating a piston according to the movement of fluid which is carried from an eccentric hole part to an inner flow path. CONSTITUTION: A pump for a brake system comprise the body of a piston(42), an inner flow path(44), and an eccentric hole part(47). The body of the piston reciprocates the inner side of a sleeve with the operation of a cam member. A path, in which the fluid is carried to the inner side of the body of the piston, is formed in the inner flow path. The eccentric hole part is connected to be eccentric to the central axis of the inner flow path. A plurality of eccentric holes is formed along the circumference of the body of the piston in the eccentric hole part. The eccentric hole is arranged to be separated at a 120 degrees interval. |
