CN2521099Y - Normally open electromagnetic valve for vehicle antilocking brake system - Google Patents
Normally open electromagnetic valve for vehicle antilocking brake system Download PDFInfo
- Publication number
- CN2521099Y CN2521099Y CN 01274257 CN01274257U CN2521099Y CN 2521099 Y CN2521099 Y CN 2521099Y CN 01274257 CN01274257 CN 01274257 CN 01274257 U CN01274257 U CN 01274257U CN 2521099 Y CN2521099 Y CN 2521099Y
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- CN
- China
- Prior art keywords
- valve
- iron
- brake
- valve seat
- valve body
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- Expired - Fee Related
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Abstract
The utility model discloses a normally opened solenoid valve of an anti-lock brake system of a car. The valve is composed of a valve body of which inside is provided with a valve seat, and outside of the valve seat is provided with a pressuring cover of which the lower end is fixed with an O-shaped ring. The left side of the valve seat is fixed with a normally opened valve-connection and a ring strainer, and a brake-cylinder junction and a ring strainer are arranged at the right end. A throttling orifice with a diameter Phi of 0.37 and an end strainer, a single-way ball valve is arranged between the throttling orifice with a diameter Phi of 0.37 and the brake-cylinder junction, and a ball valve baffle is fixed between the single-way ball valve and the throttling orifice with a diameter Phi of 0.37. The valve seat is equipped with a valve core of which the outside is provided with moving-iron and steel-iron, a spring is arranged between the moving-iron and the steel-iron, a spring is also provided between the steel-iron and the valve body, and a plunger tube is provided outside the moving-iron and the steel-iron to connect with the valve body. The utility model is provided by improving the conventional structure of normally opened valve, a single-way ball valve is additionally fixed to increase the back-flow velocity of brake liquid, solving the problems of low pressure reduction by employing brake cylinder, avoiding the anti-lock tendency, reducing the abrasion of brake friction plate, prolonging the working life and improving the brake efficiency and reliability.
Description
Technical field
The utility model relates to a kind of anti-block braking system of car normally open solenoid valve.
Background technology
At present popular in the world anti-locking system for car (ABS) all adopts the switch of electromagnetic valve to realize adjusting to brake-pressure, to reach the function that control riding stability or driving are skidded, prevent phenomenon such as sideslip that wheel lockup produces, whipping and drive the generation of skidding, guarantee road-holding property, shorten stopping distance.
Each wheel is by two 22 road on-off type solenoid control of abs pressure regulating control, and normally open valve is often opened under the normal brake application situation, and normally closed valve is normally closed.During the abs valve no power, brake-pressure directly enters brake cylinder by master brake cylinder through normally open valve, under the situation of ABS work, divides following three kinds of pressure mode of operation, and promptly pressure keeps, pressure reduces and pressure increases:
Normally open valve is switched on to becoming and is ended, and normally closed valve cuts off the power supply for also becoming and ends, and then the pressure between brake cylinder and master brake cylinder and the backwash pump is isolated, and also is that the brake-pressure in the wheel cylinder is held.
Normally open valve is switched on to becoming and is ended, normally closed valve energising becoming conducting, and the braking liquid in the wheel cylinder flows into energy storage and backwash pump by outlet valve, at this moment wheel cylinder inside brake pressure reduces, backwash pump starts simultaneously, and backwash pump is sent master brake cylinder back to after braking liquid is pressurizeed, and uses when in order to brake system the supercharging requirement being arranged.
Normally open valve outage becoming conducting, normally closed valve cuts off the power supply for becoming and ends, and this is consistent with the normal brake application situation, and promptly the ABS electromagnetic valve is in off-position, the brake-pressure increase in the wheel cylinder.
Summary of the invention
The utility model provides a kind of anti-block braking system of car normally open solenoid valve.
Its tool valve body, be provided with valve seat in the valve body, valve seat is provided with gland outward, the gland lower end is provided with O type circle, the valve seat left side is provided with the normally closed valve interface, the ring filter screen, right-hand member is provided with the brake cylinder interface, the ring filter screen, valve seat has φ 0.37 restriction, the end filter screen, be provided with check valve ball between φ 0.37 restriction and the brake cylinder interface, be provided with the valve ball catch between check valve ball and 0.37 restriction, valve seat is provided with spool, spool is provided with moving iron outward, decide iron, moving iron with decide to be provided with spring between the iron, decide to be provided with spring between iron and the valve body, move iron, deciding iron is provided with plunger tube outward and joins with valve body.
Because the restriction of normally open valve and pressure regulator is very little, the return velocity of when brake off (especially fast) residue braking liquid is very slow when producing fluctuation of pressure, it is slow that the brake-pressure of wheel cylinder reduces thereupon, even hysteresis just can return to the virgin state (non-braking mode) of brake system for a long time, because the existence of residue braking force, cause brake strip not separate completely as yet, will aggravate the wearing and tearing of brake strip, even the phenomenon of wheel lockup can occur.Till, on the structure of former normally open valve, improve, increased a check valve ball, in order to increase the return velocity of braking liquid, solve the wheel cylinder brake-pressure and reduced problem slowly, avoided the appearance of locking trend, reduced the wearing and tearing of brake strip, increase the life-span, improve brake efficiency and reliability.
Description of drawings
Accompanying drawing is an anti-block braking system of car normally open solenoid valve structural representation.
The specific embodiment
Anti-block braking system of car normally open solenoid valve tool valve body 13, be provided with valve seat 7 in the valve body, valve seat is provided with gland 6 outward, the gland lower end is provided with O type circle 8, the valve seat left side is provided with normally closed valve interface 15, ring filter screen 12, right-hand member is provided with brake cylinder interface 18, ring filter screen 12, valve seat has φ 0.37 restriction 16, end filter screen 9, be provided with check valve ball 17 between φ 0.37 restriction and the brake cylinder interface, be provided with valve ball catch 10 between check valve ball and 0.37 restriction, valve seat is provided with spool 14, spool is provided with moving iron 1 outward, decide iron 3, moving iron with decide to be provided with spring 4 between the iron, decide to be provided with between iron and the valve body spring 5, move iron, deciding iron is provided with plunger tube 2 outward and joins with valve body.
14 owing to the effect of spring 4 was opened with 7 minutes when conventional brake, the master cylinder brake-pressure is more than or equal to the wheel cylinder brake-pressure at this moment, and check valve ball will be closed, when brake off, because the throttling action of restriction, cause return velocity slow, and loss of pressure is arranged, at this moment the pressure of wheel cylinder will be greater than the pressure of master cylinder, check valve ball will be opened under action of pressure, accelerate to reflux, reduce rapidly and divide pump pressure, until consistent with master cylinder pressure.
14 elastic force and 7 closures that under the effect of electromagnetic force, overcome spring 4 when ABS works, remaining braking liquid this moment can be by backwash pump by φ 0.5 restriction blowback master cylinder, braking liquid is more when remaining, when backwash pump has little time braking liquid blowback master cylinder or master cylinder pressure when reducing (for example loosen the brake) suddenly, the pressure of wheel cylinder will be greater than the pressure of master cylinder, and check valve ball will be opened under action of pressure, accelerates to reflux, reduce rapidly and divide pump pressure, until consistent with master cylinder pressure.
Claims (1)
1. anti-block braking system of car normally open solenoid valve, it is characterized in that its tool valve body [13], be provided with valve seat [7] in the valve body, valve seat is provided with gland [6] outward, the gland lower end is provided with O type circle [8], the valve seat left side is provided with normally closed valve interface [15], ring filter screen [12], right-hand member is provided with brake cylinder interface [18], ring filter screen [12], valve seat has φ 0.37 restriction [16], end filter screen [9], be provided with check valve ball [17] between φ 0.37 restriction and the brake cylinder interface, be provided with valve ball catch [10] between check valve ball and 0.37 restriction, valve seat is provided with spool [14], and spool is provided with moving iron [1] outward and decides iron [3], moves iron and decides to be provided with between the iron spring [4], decide to be provided with between iron and the valve body spring [5], moving iron, deciding iron is provided with plunger tube [2] outward and joins with valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274257 CN2521099Y (en) | 2001-12-13 | 2001-12-13 | Normally open electromagnetic valve for vehicle antilocking brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01274257 CN2521099Y (en) | 2001-12-13 | 2001-12-13 | Normally open electromagnetic valve for vehicle antilocking brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2521099Y true CN2521099Y (en) | 2002-11-20 |
Family
ID=33678954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 01274257 Expired - Fee Related CN2521099Y (en) | 2001-12-13 | 2001-12-13 | Normally open electromagnetic valve for vehicle antilocking brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2521099Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799600A (en) * | 2018-06-29 | 2018-11-13 | 万向钱潮股份有限公司 | The linear normally open solenoid valve of automobile ABS |
| CN110206895A (en) * | 2019-05-27 | 2019-09-06 | 武汉元丰汽车电控系统有限公司 | Device for normally open solenoid valve |
-
2001
- 2001-12-13 CN CN 01274257 patent/CN2521099Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108799600A (en) * | 2018-06-29 | 2018-11-13 | 万向钱潮股份有限公司 | The linear normally open solenoid valve of automobile ABS |
| CN110206895A (en) * | 2019-05-27 | 2019-09-06 | 武汉元丰汽车电控系统有限公司 | Device for normally open solenoid valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20021120 Termination date: 20100113 |