Patent ID: 8191858
Filing Date: 2012-06-05
Classification: B60T,F16K

Abstract:
1. A solenoid valve having a short axis, comprising: a valve body that pushes a spring when an armature is excited, has a center through hole where a plunger having a channel opening/closing valve extending from a front end of the plunger is inserted, and has a front body of the valve body that has an outer circumference that is stepped as compared with another portion of the valve body; a cover housing that is disposed inside a coil, has an outer circumference on which a bush, which surrounds the valve body and is fitted, and has a front end flange that is formed at the end and has an enlarged diameter to support the bottom of the bush; a seat housing that is disposed such that the plunger body with a channel hole, which is formed through the center of the plunger body to form a channel and opened/closed by a channel opening/closing valve, forms a channel space with respect to the valve body, has a front end body of the seat housing having a bottom through hole that is communicated with a first channel hole of a pump housing, and has a rear body of the seat housing that has a larger outer diameter than the front end body of the seat housing, has side through holes communicated with a second channel hole of the pumping housing, has a staking section at the end so that the seat housing is forcedly inserted in an abutment between an inner circumference of the cover housing and an outer circumference of the front body of the valve body; a front end filter that is disposed under a plunger seat with an insert that is fitted in an inlet of the channel hole in the front body of the seat housing to remove impurities in oil that flows inside through the bottom through hole of the front body of the seat housing; a return valve that is formed in parallel with the channel hole of the plunger seat at a side of the channel hole and forms a return channel between the first channel hole and the second channel hole of the pump housing as being opened by pressure of the oil that returns from a wheel cylinder; and a circumferential filter that surrounds the side through holes of the rear body of the seat housing and filters impurities in the oil.