Electromagnetic valve for automobile braking system

Abstract

The invention relates to an electromagnetic valve for an automobile braking system, and belongs to the industry of automobiles. A pressing cover is fixedly connected with a main valve seat through four evenly distributed screws, a sealing gasket is arranged between the pressing cover and the main valve seat, the pressing cover, a magnetism-conductive shell body, a coil supporting frame, a table shoulder and the main valve seat are axially compressed in sequence, an inward flanging is arranged at the central hole of the magnetism-conductive shell body, an upper portion inner ring of the magnetism-conductive shell body is in clearance fit with an upper portion outer ring of the magnetism-conductive shell body in the radial direction, a lower portion inner ring of the magnetism-conductive shell body is in clearance fit with an outer ring of a magnetism-conductive gasket in the radial direction, an inner ring of the magnetism-conductive gasket is in clearance fit with an outer ring of the table shoulder, and a large annular groove and a small annular groove are formed in a valve body of the electromagnetic valve. The electromagnetic valve for the automobile braking system has the advantages that the structure is novel, an electromagnetic coil component does not need to be fixed independently, and the cost and assembly process difficulty are obviously lowered while high-pressure sealing performance and magnetism-conductive performance of an electromagnetic circuit are guaranteed. Besides, when a single electromagnetic valve fails to work, the damaged electromagnetic valve can be replaced independently, the failure of an entire HCU assembly is avoided, and the yield of the entire HCU assembly is obviously improved.

Description

technical field [0001] The invention belongs to the automobile industry, in particular to a hydraulic control unit assembly applied to an automobile braking electronic stability system. Background technique [0002] Solenoid valve is a key component of automotive brake electronic stability system. A hydraulic control unit assembly of a vehicle braking electronic stability system is equipped with multiple solenoid valves. Through the control of the relevant solenoid valves, the adjustment of the brake hydraulic pressure of different wheel cylinders is realized to ensure the safety and comfort of the brakes of the car. In the HCU assembly of the current automotive braking electronic stability system, the solenoid valve is directly riveted with the main valve seat of the HCU assembly by interference riveting, which is used to resist the internal high pressure and cannot be disassembled. The disadvantage is that the electromagnetic coil assembly needs to be fixed separately, a...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a solenoid valve for an automobile braking system to solve the problem that the solenoid coil assembly needs to be fixed separately, and if one of the solenoid valves fails during assembly or use, it cannot be replaced separately, resulting in the failure of the entire HCU assembly

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