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Electromagnetic valve for braking system

A brake system, solenoid valve technology, applied in the field of solenoid valves, can solve the problem of violating the compactness of the regulator block, etc.

Inactive Publication Date: 2006-04-05
HL MANDO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is practically impossible to design the oil passage structure of the regulator block 30 that can achieve the above purpose, because this change of the oil passage structure of the regulator block goes against the current trend of compactness of the regulator block

Method used

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  • Electromagnetic valve for braking system
  • Electromagnetic valve for braking system
  • Electromagnetic valve for braking system

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Experimental program
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Embodiment Construction

[0018] Please refer now to the attached picture. Such as image 3 As shown, the inflow and outflow control solenoid valves according to the preferred embodiment of the present invention are disposed within the regulator block 30 of an electrohydraulic braking system. In the present invention, the overall shape of the regulator block and inflow control solenoid valve remains the same as figure 2 The description of the conventional embodiment shown is the same, but the structure of the outflow control solenoid valve is changed to achieve the purpose of the present invention. Those components which are the same as those of the conventional embodiment and the present invention are denoted by the same numerals.

[0019] The solenoid valve for brake system of the present invention is an NC type solenoid valve and is used as a solenoid valve for outflow control, which is installed in a regulator block 30 of an electrohydraulic brake system to control the electrohydraulic brake sys...

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PUM

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Abstract

A solenoid valve for brake systems is disclosed. This solenoid valve is preferably used as an outflow control NC-type solenoid valve (40) mounted on the oil return line of an electro-hydraulic brake system (EHB). This solenoid valve (40) consists of a hollow valve housing (41) having a radial inlet passage (41a), a plunger (42a) movably received in the bore (41c) of the valve housing (41) so as to axially move in the bore in opposite directions, and a valve seat (47) set in the bore of the valve housing (41), with an orifice (47a) axially formed in the valve seat such that the orifice is opened or closed by a control ball (42b) of the plunger (42a). A radial oil port (47b) is formed on the sidewall of the valve seat so as to allow oil from the oil inlet passage (41a) of the valve housing to flow into the valve seat (47), and flow from the valve seat toward the plunger through the orifice. A plug (48) closes the lower end of the bore of the valve housing, an oil outlet passage (41b) is axially formed in the sidewall of the valve housing such that the oil outlet passage communicates at its top end with the outlet of the orifice. This oil outlet passage (41b) feeds oil from the outlet of the orifice (47a) to a space defined under the bottom of the valve housing (41).

Description

(1) Technical field [0001] The present invention relates to a solenoid valve used in an automobile brake system, more specifically, relates to a solenoid valve used in an oil return pipe of an electrohydraulic brake system. (2) Background technology [0002] Among the various brake systems currently used in automobiles, the electrohydraulic brake system (EHB) can sense the pedal pressure of the driver's foot on the brake pedal through the pressure sensor, and use the regulator to respond to the sensed pressure. Pedal pressure to control the oil pressure input to the wheel brake cylinders. [0003] Such as figure 1 As shown, a conventional electrohydraulic brake system (EHB) includes a pedal operation sensor 2 for an operation sensing brake pedal 1 . A master brake cylinder 4 is connected to the pedal 1 and has a pressure sensor 3 for sensing the pedal pressure applied to the pedal 1 by the driver's foot. The electrohydraulic braking system also has an oil pump 6 which for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60T8/36B60T8/40B60T8/34F16K31/06
CPCY10S303/90F16K31/0693B60T8/363B60T8/3675B60T8/4081B60T8/34
Inventor 沈太永
Owner HL MANDO CORP