CN2400655Y - Pressure-limiting check valve for vehicles - Google Patents
Pressure-limiting check valve for vehicles Download PDFInfo
- Publication number
- CN2400655Y CN2400655Y CN 99254554 CN99254554U CN2400655Y CN 2400655 Y CN2400655 Y CN 2400655Y CN 99254554 CN99254554 CN 99254554 CN 99254554 U CN99254554 U CN 99254554U CN 2400655 Y CN2400655 Y CN 2400655Y
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- CN
- China
- Prior art keywords
- pressure
- valve
- pressure limiting
- steel ball
- chewed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Safety Valves (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The utility model belongs to a valve device for a vehicle to control the air flow direction and the air pressure. The utility model has the structure that a pressure-limiting mechanism is added on the basis of a vehicle one-way valve, and the mechanism comprises a pressure-limiting mouth, a reset spring arranged in the pressure-limiting mouth, a steel ball and a press cover provided with an air inlet; the air inlet on the press cover is pushed by the reset spring through the steel ball. When negative pressure on the one-way valve is greater than the elastic force of the reset spring on the steel ball, the pressure-limiting valve is opened, the air enters a booster main pump connected with the one-way valve through an air inlet, and accordingly, the negative pressure in the booster main pump is limited. The utility model has the advantages of simple structure, good tightness, stable brake, safety, etc., and is suitable for matching with vehicle brake systems of various types.
Description
The utility model belongs to the valving of controlling air current flow direction and air pressure on the vehicle.
The existing one-way valve that is arranged on the diesel engine vacuum pump can only play unidirectional closed gas flow effect, does not have the pressure limiting function; When the booster master cylinder is sucked above negative pressure 0.1Mpa, on the one hand, can cause the brake of vacuum booster master cylinder too urgent, influenced the vehicle driving process safe; Also influence the working life of booster master cylinder on the other hand.
The purpose of the utility model is to provide a kind of automobile-used one-way valve that has the pressure limiting function, and it can guarantee to have in the booster master cylinder a specified safe power-assist negative pressure.
The technical solution of the utility model is such: it comprises and has the valve body that be connected with vacuum pump, the total pump assembly of booster respectively air-breathing chews, exhaust is chewed, and is contained in valve plug, spring and black box in the valve body valve pocket successively; The bottom of spring is against on the black box, and the spring the other end withstands on the valve plug, and its sealing exhaust is chewed.Also be provided with the pressure limiting that communicates with valve pocket on the valve body and chew, Returnning spring, steel ball, gland are housed in pressure limiting is chewed, have inlet hole on the gland, the inlet hole internal orifice steel ball by the spring roof pressure.When vacuum pump is started working, valve plug is opened under the effect of negative-pressure sucking, booster master cylinder air is sucked, when the negative pressure in the valve pocket rises to elastic force greater than the Returnning spring of roof pressure on steel ball, steel ball leaves the inlet hole internal orifice, pressure limiting is chewed open-minded, and air enters valve pocket by inlet hole, makes the degree of vacuum of valve pocket not rise.When vacuum pump quit work, valve plug, steel ball were sealed in exhaust respectively and chew on the internal orifice of chewing with pressure limiting under spring and action of reset spring, defined negative pressure in the booster master cylinder from face.
Below in conjunction with embodiment shown in the drawings the utility model is described in further detail.
Fig. 1 is a structural representation of the present utility model.
Automobile-used pressure limiting one-way valve air-breathingly chews 12 by having, exhaust chews 6, pressure limiting is chewed 4 valve body 8 and placed valve plug 7, spring 9 and black boies in the valve body 8 to form.The centre of valve body 8 has valve pocket, valve pocket with air-breathingly chew 12, exhaust chews 6, pressure limiting is chewed 4 and communicated, wherein placing the valve plug 7 of valve pocket to chew in exhaust by spring 9 roof pressures chews on the mouth in 6, the other end of spring 9 is against on the black box, black box is contained at the bottom of the valve pocket on the mouth, is made up of O-ring seal 10, gasket seal 13, back-up ring 11.Air-breathingly chew 12, exhaust chews 6, pressure limiting is chewed 4 and can be made one, be sealedly connected on the valve body 8 after also can making separately.Pressure limiting is chewed on 4 the inwall gland 2, steel ball 3, the Returnning spring 5 of bringing pore 14 into is housed successively.Returnning spring 5 withstands on steel ball 3 on inlet hole 14 internal orifices, the other end of Returnning spring 5 be against pressure limiting chew the shoulder of 4 inwalls protruding on; Gland 2 is chewed 4 with pressure limiting and is threaded, and rotation gland 2 can be adjusted the elastic force of Returnning spring, and elastic force is big more, and voltage limiting value is high more, and booster master cylinder proper functioning negative pressure is in the 0.04-0.094Mpa scope, and gland 2 comes desired location by negative voltage limiting value; When the negative pressure value that is sucked in the valve pocket surpassed 0.1Mpa, pressure limiting was chewed steel ball 3 negative-pressure suckings in 4 greater than the elastic force of Returnning spring 5, and steel ball 3 leaves inlet hole 14, and 4 air inlet pressure releases are chewed in pressure limiting, thereby reach the purpose of the utility model pressure limiting.
In order to prevent that impurity dirt in the air-flow from entering on the valve body 8 circulation tube walls, chew 4 the mouth of chewing in pressure limiting and establish an air-filtering part 1.
Obviously, the utlity model has the advantages such as simple in structure, good airproof performance, match with brake system, Can guarantee the running process stop enclose steadily, safety, can reduce the sealing gland mill in the booster master cylinder simultaneously Decrease, prolong its service life.
Claims (3)
1, the pressure limiting one-way valve that control stream pressure and direction flow on a kind of vehicle, it comprises and having respectively and vacuum pump, the valve body (8) that (6) are chewed in air-breathing chewing (12) that the total pump assembly of booster connects and exhaust, be contained in the valve plug (7) in valve body (8) valve pocket successively, spring (9) and black box, one end of spring (9) withstands on the valve plug (7), the other end is against on the black box, it is characterized in that: valve body (8) is provided with the pressure limiting that communicates with valve pocket and chews (4), pressure limiting is chewed Returnning spring (5) is housed in (4), steel ball (3), gland (2), have inlet hole (14) on the gland (2), inlet hole (14) internal orifice spring (5) roof pressure that is reset steel ball (3).
2, according to the described automobile-used pressure limiting one-way valve of claim 1, it is characterized in that: described pressure limiting is chewed (4) collar extension and is provided with filter member (1).
3,, according to claim 1 or 2 described automobile-used pressure limiting one-way valves, it is characterized in that: described gland (2) is chewed between (4) with pressure limiting and is threaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99254554 CN2400655Y (en) | 1999-11-23 | 1999-11-23 | Pressure-limiting check valve for vehicles |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99254554 CN2400655Y (en) | 1999-11-23 | 1999-11-23 | Pressure-limiting check valve for vehicles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2400655Y true CN2400655Y (en) | 2000-10-11 |
Family
ID=34038150
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99254554 Expired - Fee Related CN2400655Y (en) | 1999-11-23 | 1999-11-23 | Pressure-limiting check valve for vehicles |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2400655Y (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105051434A (en) * | 2013-10-08 | 2015-11-11 | 戴科知识产权控股有限责任公司 | Noise attenuation in check valve unit or for vacuum generated device |
| US9617958B2 (en) | 2013-12-09 | 2017-04-11 | Dayco Ip Holdings, Llc | Noise attenuation unit for engine systems |
| US10024458B2 (en) | 2014-04-04 | 2018-07-17 | Dayco Ip Holdings, Llc | Bypass check valve and venturi devices having the same |
| US10024339B2 (en) | 2014-05-30 | 2018-07-17 | Dayco Ip Holdings, Llc | Vacuum creation system having an ejector, pneumatic control valve and optionally an aspirator |
| US10100720B2 (en) | 2015-01-09 | 2018-10-16 | Dayco Ip Holdings, Llc | Crankcase ventilating evacuator |
| US10107240B2 (en) | 2014-04-04 | 2018-10-23 | Dayco Ip Holdings, Llc | Check valves and Venturi devices having the same |
| US10190455B2 (en) | 2015-10-28 | 2019-01-29 | Dayco Ip Holdings, Llc | Venturi devices resistant to ice formation for producing vacuum from crankcase gases |
| US10316864B2 (en) | 2015-04-13 | 2019-06-11 | Dayco Ip Holdings, Llc | Devices for producing vacuum using the venturi effect |
| US10422351B2 (en) | 2015-07-17 | 2019-09-24 | Dayco Ip Holdings, Llc | Devices for producing vacuum using the venturi effect having a plurality of subpassageways and motive exits in the motive section |
| US10519984B2 (en) | 2014-06-06 | 2019-12-31 | Dayco Ip Holdings, Llc | Noise attenuation in a Venturi device and/or check valves |
| US10626888B2 (en) | 2014-07-10 | 2020-04-21 | Dayco Ip Holdings, Llc | Dual Venturi device |
| CN112240419A (en) * | 2020-09-28 | 2021-01-19 | 威伯科汽车控制系统（中国）有限公司 | Air inlet terminal and vacuum pump provided with same |
-
1999
- 1999-11-23 CN CN 99254554 patent/CN2400655Y/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105051434B (en) * | 2013-10-08 | 2017-07-07 | 戴科知识产权控股有限责任公司 | It is in check valve unit or for the noise attentuation in the equipment for producing vacuum |
| CN105051434A (en) * | 2013-10-08 | 2015-11-11 | 戴科知识产权控股有限责任公司 | Noise attenuation in check valve unit or for vacuum generated device |
| US10077746B2 (en) | 2013-12-09 | 2018-09-18 | Dayco Ip Holdings, Llc | Noise attenuation unit for engine systems |
| US9617958B2 (en) | 2013-12-09 | 2017-04-11 | Dayco Ip Holdings, Llc | Noise attenuation unit for engine systems |
| US10473235B2 (en) | 2014-04-04 | 2019-11-12 | Dayco Ip Holdings, Llc | Bypass check valve and Venturi having same |
| US10107240B2 (en) | 2014-04-04 | 2018-10-23 | Dayco Ip Holdings, Llc | Check valves and Venturi devices having the same |
| US10190549B2 (en) | 2014-04-04 | 2019-01-29 | Dayco Ip Holdings, Llc | Check valves and venturi devices having the same |
| US10024458B2 (en) | 2014-04-04 | 2018-07-17 | Dayco Ip Holdings, Llc | Bypass check valve and venturi devices having the same |
| US10024339B2 (en) | 2014-05-30 | 2018-07-17 | Dayco Ip Holdings, Llc | Vacuum creation system having an ejector, pneumatic control valve and optionally an aspirator |
| US10519984B2 (en) | 2014-06-06 | 2019-12-31 | Dayco Ip Holdings, Llc | Noise attenuation in a Venturi device and/or check valves |
| US10626888B2 (en) | 2014-07-10 | 2020-04-21 | Dayco Ip Holdings, Llc | Dual Venturi device |
| US10100720B2 (en) | 2015-01-09 | 2018-10-16 | Dayco Ip Holdings, Llc | Crankcase ventilating evacuator |
| US10316864B2 (en) | 2015-04-13 | 2019-06-11 | Dayco Ip Holdings, Llc | Devices for producing vacuum using the venturi effect |
| US10422351B2 (en) | 2015-07-17 | 2019-09-24 | Dayco Ip Holdings, Llc | Devices for producing vacuum using the venturi effect having a plurality of subpassageways and motive exits in the motive section |
| US10190455B2 (en) | 2015-10-28 | 2019-01-29 | Dayco Ip Holdings, Llc | Venturi devices resistant to ice formation for producing vacuum from crankcase gases |
| CN112240419A (en) * | 2020-09-28 | 2021-01-19 | 威伯科汽车控制系统（中国）有限公司 | Air inlet terminal and vacuum pump provided with same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |