| 摘要 |
An oil pump of a hydraulic power brake system for vehicle is provided to facilitate the operation of removing the air existing in the inner housing to make a vacuum. An oil pump of a hydraulic power brake system for vehicle comprises a top housing(10), a piston(20) installed on the upper inside part of the top housing, a first spring support(30) installed on the lower part of the piston, a first ball valve(40) installed on the upper inside part of the first spring support, a first support spring(50) installed on the inner lower part of the first spring support, an inner housing(60) installed under the top housing, a return spring(70) installed on the inner lower part of the inner housing, a bottom housing(80) whose inner circumference top is combined with the outer circumference top of the top housing, a second ball valve(90) installed on the upper inside part of the bottom housing, and a second support spring(100) installed on the inner lower part of the bottom housing. |
