| 摘要 |
A solenoid valve for regulating a flow of brake oil is provided to quickly supply and recollect oil by forming a flow path of the brake oil between a master cylinder and a brake mechanism through the solenoid valve and to shorten the response time. A solenoid valve for regulating a flow of brake oil comprises a plunger(2), a valve body(3), and a spool(11). The plunger is operated by a coil body(1) excited by supplied electric power according to control signals of a control unit. The valve body has a path forming body(5), a narrow connecting unit(7), a check valve hole(9), and a check valve(10). The path forming body is integrally connected with an extension body(4) inserting the plunger inside through a plunger hole(6a) by press-fitting into a modulator block(A). The narrow connecting unit is formed at the path forming body with a path hole(8) communicated with a chamber(6b) inflowing oil pressure. Two check valve holes are formed at the chamber of the path forming body to be communicated circumferentially. The check valve operates the recollected oil pressure only toward the chamber. The spool has a path forming body(11a), an extension contact step(11c), a path hole(11d), and a spring(11e). The path forming body is inserted into the chamber of the valve body to shape a chamber(11b) receiving oil pressure. The extension contact step is projected on an end of the path forming body and formed spherical to be tightly contacted with a spherical contact step(2a) of the plunger. The path hole is connected to a smaller diameter than the chamber of the path forming body to be opened to the extension contact step. The spring is supported by the extension contact step on one end and supported by the plunger on the other end. |
