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Bidirectional electromagnetic valve for automobile brake systems

A technology of an automobile braking system and a two-way solenoid valve, which is applied in the field of solenoid valves, can solve problems such as the inability to achieve two-way sealing and the easy failure of the one-way solenoid valve seal, and achieve a novel and simple structure with no reduction in braking efficiency. Effect

Active Publication Date: 2015-04-01
WUHU DONGGUANG AOWEI AUTO BRAKE SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a two-way solenoid valve for an automobile braking system to solve the problem that the existing one-way solenoid valve is prone to failure in sealing and cannot realize two-way sealing

Method used

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  • Bidirectional electromagnetic valve for automobile brake systems
  • Bidirectional electromagnetic valve for automobile brake systems
  • Bidirectional electromagnetic valve for automobile brake systems

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Embodiment Construction

[0014] The fixed iron 2 is electromagnetic pure iron, the magnetic isolation tube 4 is stainless steel, the fixed iron 2 and the magnetic isolation tube 4 are laser welded, the magnetic isolation tube 4 is embedded in the valve body 18 and is laser welded with the valve body 18, the valve body 18 and the valve seat 7 Pressure riveting and fixed connection, the lower end surface of the valve body 18 is connected with the upper end surface of the valve seat 7, the inner circle of the valve body 18 and the outer circle of the valve seat 7 are radially sealed by the O-ring 211, and the flange 14 of the valve body is connected with the valve seat 7 The lower end of the moving iron 5 is assembled in the valve body 18, the upper end of the moving iron 5 is a 45-degree conical convex surface, the fixed iron 2 is located above the moving iron 5, the lower end of the fixed iron 2 is a 45-degree conical concave surface, and the middle of the moving iron 5 There is an axial step through ho...

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Abstract

The invention relates to a bidirectional electromagnetic valve for automobile brake systems and belongs to the industry of automobiles. A fixed block is welded to a flux-insulating tube by laser welding. The flux-insulating tube is embedded into a valve body and welded to the body by laser welding. The valve body is fixedly connected with a valve seat by riveting. The lower end face of the valve body is connected with the upper end face of the valve seat. A bent edge of the valve body is connected with a riveting face of the valve seat. The lower end of a moving block is fitted in the valve body. The center of the moving block is provided with an axial stepped through hole; the lower end of the moving block is provided with a T-shaped groove. The moving block is in radial clearance fit with the flux-insulating tube. A piston is in radial clearance fit with a bore of the valve seat. A ring groove is in clearance fit with the T-shaped groove of the moving block. The bidirectional electromagnetic valve has the advantages that valve is simple in structure and easy to manufacture and assemble; when a valve circuit is broken, the valve keeps on, a valve opening has large diameter, the action upon throttling of fluid in a pipeline is not evident, and braking performance remains same during normal hydraulic braking; only one valve opening is provided, leaks are decreased, and operating reliability is improved.

Description

technical field [0001] The invention belongs to the automobile industry, in particular to a solenoid valve used in a hydraulic control unit assembly of an automobile braking energy recovery system. Background technique [0002] With the development of new energy vehicle technology, the braking energy recovery function has become one of the must-have functions of the braking system of new energy vehicles. An important feature of the brake energy recovery system is that when the brake energy is recovered, the hydraulic pressure generated by the brake master cylinder is absorbed by the system, the brake wheel cylinder does not brake, and the brake torque is generated by the motor torque. When the motor torque cannot meet the required braking torque, the booster pump generates active boost. At this time, a large flow two-way solenoid valve is required to realize the isolation of the hydraulic part generated by the brake master cylinder and the hydraulic part generated by the bo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K31/06
CPCF16K31/06F16K31/0675
Inventor 李文惠柳恩芬宋巍朴松鹤孙红旭张殿东关俊刚王纯龙汪炳辰石喜娟郭修圻李丕雷
Owner WUHU DONGGUANG AOWEI AUTO BRAKE SYST
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