Linear electromagnetic normally-closed valve of automobile braking system

A technology of automobile braking system and normally closed valve, which is applied in the direction of lifting valve, valve device, engine components, etc., can solve the problem that the precise control of the valve port cannot be realized, and achieve the effect of linear control

Inactive Publication Date: 2013-05-08
武汉元丰汽车电控系统股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The opening of the valve port is affected by the four forces of electromagnetic force, hydraulic force, damping force and friction force. When the pressure is reduced, the flow direction of the brake fluid is opposite to the direction in which the push rod leaves the valve port. The closed valve structure cannot realize precise control of the valve port, that is, linear control

Method used

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  • Linear electromagnetic normally-closed valve of automobile braking system
  • Linear electromagnetic normally-closed valve of automobile braking system

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Embodiment Construction

[0012] Such as figure 1 As shown, the linear electromagnetic normally closed valve includes magnetic isolation tube 1, fixed iron 2, spring 3, moving iron assembly (moving iron 4 and push rod 5), flange 6, valve seat 7, ring filter 8, steel ball 9 . The push rod 5 is pressed into the interior of the moving iron 4 through interference fit to form a moving iron assembly, which can move axially in the magnetic isolation tube 2 . The spring 3 is loaded inside the fixed iron 2, the fixed iron 2 is connected with the moving iron assembly through the spring 3, and the spring 3 has a certain pretightening force. The moving iron 2 is pressed into the magnetic isolation tube 2 through an interference fit, and fixed by a riveting method 12 to prevent the moving iron from moving up and down. The valve seat 6 and the magnetic isolation tube 2 are fixed by laser welding (). In the state of power failure, the spherical tip 13 of the push rod 5 and the conical surface 14 of the valve seat ...

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Abstract

The invention relates a linear electromagnetic normally-closed valve of an automobile braking system. The linear electromagnetic normally-closed valve of the automobile braking system comprises a plunger tube, a fixed iron piece, a spring, a movable iron component, a flange, a valve seat, a ring filter screen and a steel ball, and the movable iron component is formed by a push rod and a valve body and is capable of axially move inside the plunger tube. The spring is installed inside the fixed iron piece, the fixed iron piece and the movable iron component are connected through the spring, the fixed iron piece and the plunger tube are fixedly connected, the valve seat and the plunger tube are connected together in a welding mode, and the spherical surface tip portion of the push rod and the conical surface of the valve seat are in sealable contacting connection. The linear electromagnetic normally-closed valve of the automobile braking system with the structure can achieve linear control.

Description

technical field [0001] The invention relates to a linear electromagnetic normally closed valve for an automobile braking system. Background technique [0002] The traditional brake system uses a normally closed valve, which generally adopts a two-position two-way solenoid valve structure, and controls the opening and closing of the solenoid valve by turning on and off the coil. In the traditional ABS system, the normally closed valve is used as a decompression valve. When the wheel cylinder pressure is too high, in order to reduce the pressure rapidly, the direct normally closed valve is usually fully opened to achieve the purpose of decompression. The opening of the valve port is affected by the four forces of electromagnetic force, hydraulic force, damping force and friction force. When the pressure is reduced, the flow direction of the brake fluid is opposite to the direction in which the push rod leaves the valve port. The closed valve structure cannot realize precise c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16K1/14
Inventor 童幸源王伟玮陈勇辉石蕾张亿雄商一凡李雪莱蔡海分方昌辉童小明
Owner 武汉元丰汽车电控系统股份有限公司
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