| 摘要 |
PURPOSE:To facilitate the fabrication of a brake hydraulic pressure control device and as well to enhance the accuracy thereof, by forming a linear hole in a valve casing to form a cylinder section so that the null stroke of a valve mechanism affecting the anti-lock performance of braking may be determined by a movable section alone. CONSTITUTION:A valve mechanism 23 comprises a valve element 28 disposed in a valve chamber 27, a valve seat 29 onto which the valve element 28 may seat, a valve seat member 30 screwed into a pressure reducing piston 18 and a spring 31 urging the valve member 28 disposed in the valve chamber 27 toward the valve seat 29. The pressure reducing piston 18 is formed therethrough a communication hole 33 communicating between the valve chamber 27 and an input hydraulic pressure chamber 22. The valve element 28 is integrally incorporated with the end of a support member 33, confronting the valve chamber 27, which is inserted into the valve seat member 30, and is formed in a semicircular shape which is convex toward the valve seat 29. |
