CN201439341U - Air pressure regulating valve for reducing sealing pressure and residual pressure - Google Patents
Air pressure regulating valve for reducing sealing pressure and residual pressure Download PDFInfo
- Publication number
- CN201439341U CN201439341U CN2009200869350U CN200920086935U CN201439341U CN 201439341 U CN201439341 U CN 201439341U CN 2009200869350 U CN2009200869350 U CN 2009200869350U CN 200920086935 U CN200920086935 U CN 200920086935U CN 201439341 U CN201439341 U CN 201439341U
- Authority
- CN
- China
- Prior art keywords
- rubber diaphragm
- pressure
- rubber
- air pressure
- lower body
- 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
Links
Images
Landscapes
- Diaphragms And Bellows (AREA)
Abstract
The utility model discloses a reduce sealing pressure and residual pressure's air pressure regulating valve, including pressure-increasing valve part, pressure-reducing valve part and pilot valve part, the pressure-reducing valve part includes the upper part of the body, the lower part of the body, rubber diaphragm return spring, and on its rubber diaphragm separation blade put into down internal circle step, the rubber diaphragm was put in the circular slot on the rubber diaphragm separation blade, and the external diameter D of rubber diaphragm was greater than the internal diameter D who holds the circular slot of rubber diaphragm, formed the interference fit state, had radial annular on the lateral wall of circular slot. D-D is 0.1-1.5 mm. The height of the radial ring groove is 0.25-0.70 times of the peripheral thickness of the rubber die piece, and the width of the radial ring groove is 1-2.5 mm. The utility model discloses simple structure, manufacturability are good, the reliability is high, with low costs, are applicable to various car ABS air pressure regulating valve.
Description
Technical field
The utility model relates to a kind of air pressure adjusting valve that reduces confining pressure and residual pressure, belong to the component structural in the automobile pressure anti-skid brake system, hang down a kind of structural shape of confining pressure and low-residual pressure specifically in the ABS air pressure adjusting valve for realization.
Technical background
At present, be used for the actr of automobile pressure anti-skid brake system, need respond fast according to the needs of glancing impact control and finish supercharging, pressurize, three kinds of mode of operations of decompression, adopt the ABS air pressure adjusting valve.During the each service brake of automobile, the ABS air pressure adjusting valve all will be introduced into pressurized state, air guide formerly presses P1 to reach a certain pressure (to call confining pressure in the following text) before, and the operating air pressure P2 that enters compressed air brake cylinder communicates with atmosphere P3, and operating air pressure is in leak condition.Because guide's air pressure increases simultaneously with the operating air pressure that enters compressed air brake cylinder and force value equates.Therefore, higher in order to guarantee the required confining pressure of operation pressure no leak, then the operation pressure spillage is bigger.Its result is directed at the leakage of air receiver air pressure, potential energy descends, and when serious, make car load out of reach emergency brake usefulness, even brakes entirely ineffective.In order to realize less confining pressure, can strengthen the returning place force of rubber diaphragm pull back spring, but strengthen the returning place force of rubber diaphragm pull back spring, can bring another problem again, that is: when complete brake off, after the operation pressure of compressed air brake cylinder drops to a certain pressure (to call residual pressure in the following text), can not continue to drop to zero, automobile brake can not be removed fully.The returning place force of rubber matrix pull back spring is bigger, and residual pressure is higher, and the situation that automobile brake can not be removed fully is more serious.Therefore, confining pressure and residual pressure are the basic mechanical design feature indexs of ABS air pressure adjusting valve, and reduce confining pressure simultaneously and residual pressure is the design difficulty of ABS air pressure adjusting valve, are that the designer expects the technical barrier that solves always.
Summary of the invention
The purpose of this utility model provides a kind of air pressure adjusting valve that reduces confining pressure and residual pressure, and is promptly simple in structure, reliability is high, cost is low, reduce the ABS air pressure adjusting valve of confining pressure and residual pressure good manufacturability the time.
The technical solution of the utility model: the air pressure adjusting valve of reduction confining pressure of the present utility model and residual pressure comprises pressure charging valve part, reducing valve partial sum priority valve part, reducing valve partly comprises upper body, lower body, rubber diaphragm catch, rubber diaphragm, rubber diaphragm pull back spring, its rubber diaphragm catch is put on the round platform rank of lower body, rubber diaphragm is placed in the circular groove on the rubber diaphragm catch, the outside diameter d of rubber diaphragm is greater than the inside diameter D of the circular groove that holds rubber diaphragm, form the interference fit state, radially annular groove is arranged on the sidewall of circular groove.d-D＝0.1～1.5mm。
The air pressure adjusting valve of described reduction confining pressure and residual pressure, its radially the height of annular groove be 0.25～0.70 times of rubber matrix peripheral thickness, radially the width of annular groove (2b) is 1～2.5mm.
Advantage of the present utility model: the utility model makes the ABS air pressure adjusting valve realize lower confining pressure and residual pressure simultaneously.Having solved glancing impact makes towards the operation pressure spillage of compressed air brake cylinder too big owing to ABS air pressure adjusting valve confining pressure is too high, cause the air pressure of air receiver to descend, when serious, make car load out of reach emergency brake usefulness because air receiver potential energy descends, even brake entirely ineffective technical barrier; The bigger technical barrier of moment solved simultaneously when brake off, owing to can not be removed, be dragged to the too high automobile brake of ABS air pressure adjusting valve residual pressure fully.
Description of drawings
Fig. 1 is an ABS air pressure adjusting valve structure principle chart of the present utility model.
Fig. 2 is a reducing valve part-structure scheme drawing.
Fig. 3 is a reducing valve part lower body structural representation.
Rubber diaphragm force analysis figure when Fig. 4 is the matrix up-bow.
Rubber diaphragm force analysis figure when Fig. 5 bends down for matrix.
Fig. 6 is for adopting the utility model rubber diaphragm force analysis figure.
The specific embodiment
As Fig. 1: the reduction confining pressure that the utility model provides and the ABS air pressure adjusting valve of residual pressure comprise pressure charging valve part Z, reducing valve part J and priority valve part X.Wherein, 1 mouthful connects air tank, 2 mouthfuls and connects compressed air brake cylinder, 3 mouthfuls and connect atmosphere; P1 is that 1 implication is pressed, P2 is that 2 implications are pressed, P3 is that 3 implications are pressed.
As Fig. 2: reducing valve partly comprises upper body 1, lower body 2, rubber diaphragm 3, rubber diaphragm pull back spring 4, rubber diaphragm catch 5.Rubber diaphragm catch 5 is put on the round platform rank 2c of lower body 2, rubber diaphragm 3 is placed in the circular groove 2a on the rubber diaphragm catch 5, the outside diameter d of rubber diaphragm 3 is slightly larger than the inside diameter D of the circular groove 2a that holds rubber diaphragm, forms the interference fit state, d-D=0.1～1.5mm.
Radially annular groove 2b is arranged on the sidewall of circular groove 2a.
Rubber diaphragm 3 is provided with rubber diaphragm rigid backbone 6, and rubber diaphragm 3 has: upper body seal ring 3b, lower body seal ring 3a.Described rubber diaphragm washer 5 can prevent rubber diaphragm 3 excessive deformations, increases rubber diaphragm 3 strength at repeated alternations and reduce rubber matrix 3 effective active areas.The rubber diaphragm outside diameter d is greater than the inside diameter D of the circular groove 2a that holds rubber diaphragm, i.e. d-D=0.1～1.5mm on scantling of structure.Radially annular groove 2b is arranged on the sidewall of described circular groove 2a, hold the radial expansion of rubber diaphragm 3, and guarantee bow under the rubber diaphragm.Radially the height of annular groove 2b is 0.25～0.70 times of rubber matrix 3 peripheral thicknesses, and radially the width of annular groove 2b is 1～2.5mm.
Wherein, I is that the pilot pressure chamber, the II that lead to priority valve is that the operation pressure chamber, the III that lead to compressed air brake cylinder is that discharge chamber, the IV that leads to atmosphere is the exhaust passage.
Fig. 3 is the utility model reducing valve part lower body structural representation:
Wherein, 2d is the sealing valve port plane of matching with rubber diaphragm 3 lower body seal ring 3a, 2c is the round platform rank of placing rubber diaphragm catch 5,2a is a circular groove of placing rubber diaphragm 3,2b is the radially annular groove on the sidewall of circular groove 2a that holds rubber diaphragm 3, and 2b guarantees the radial expansion of bow under the rubber diaphragm.
In fitting process, if on the sidewall of circular groove 2a, do not establish radially annular groove 2b, when putting into rubber diaphragm 3, two kinds of situations can appear: because rubber diaphragm material is the rubber of macromolecular structure, its characteristic is a flexible body, and is yielding in production, transportation, storage, installation process, behind the lower body of packing into, rubber diaphragm axially might upwards arch along it, also might bend downwards.When rubber diaphragm upwards arches, if need to realize the sealing of rubber diaphragm lower body seal ring 3a and lower body sealing valve port plane 2d, confining pressure will improve.For avoiding improving confining pressure, can strengthen the spring force F1 (Fig. 4) of rubber diaphragm pull back spring, but this will make above-mentioned rubber diaphragm pack into behind the lower body, if rubber diaphragm is when it axially arches downwards, the residual pressure of ABS air pressure adjusting valve improves.The performance of ABS air pressure adjusting valve meeting variation cause the leakage of automobile air receiver air pressure, losses of potential energy, or it is bigger to make automobile brake can not remove, drag moment fully as previously mentioned.In order to solve the problem that prior art exists, the utility model is established radially annular groove 2b on the sidewall of the circular groove 2a of described lower body, enough big with the radial expansion space of guaranteeing bow under the rubber diaphragm, after lower body has been set up described annular groove 2b, carrying out the ABS air pressure adjusting valve assembles when putting into rubber diaphragm, rubber diaphragm lower body seal ring external diameter top thereon is subjected to an inside bending moment force, forces the rubber matrix to arch downwards, and can upwards not arch.
So just eliminated because the limited error that rubber diaphragm arches up and down and brings to rubber diaphragm rubber seal ring sealing force.Under the prerequisite that guarantees minimum confining pressure, reduced maximum confining pressure, thereby also reduced maximum residual pressure.
Rubber diaphragm force analysis figure when Fig. 4 is the matrix up-bow:
Wherein, the suffered diametral load of lower body seal ring on F1-rubber diaphragm pull back spring power, the F2-rubber diaphragm power of upwards arching, F3-rubber diaphragm lower body seal ring 3a sealing force (that is: between rubber diaphragm lower body seal ring 3a and the lower body sealing valve port plane 2d sealing force make a concerted effort), the N-rubber diaphragm.
Rubber diaphragm force analysis figure when Fig. 5 bends down for matrix:
Wherein, the suffered diametral load of lower body seal ring on F1-rubber diaphragm pull back spring power, the F2 '-rubber diaphragm power of arching downwards, F3-rubber diaphragm lower body seal ring 3a sealing force (that is: between rubber diaphragm lower body seal ring 3a and the lower body sealing valve port plane 2d sealing force make a concerted effort), the N-rubber diaphragm.
Fig. 6 is for adopting the utility model rubber diaphragm force analysis figure:
Wherein, the suffered diametral load of lower body seal ring on the power that F1-rubber diaphragm pull back spring power, F2 '-rubber diaphragm arch downwards, F3-rubber diaphragm rubber seal ring sealing force (that is: between rubber diaphragm rubber seal ring 3a and the lower body sealing valve port plane 2d sealing force make a concerted effort), the N-rubber diaphragm, the stressed N of rubber diaphragm than N power among Fig. 4,5 on the upper side, this structural constraint rubber diaphragm up-bow, stressed formation is bow down.
Claims (3)
1. air pressure adjusting valve that reduces confining pressure and residual pressure, comprise the pressure charging valve part, reducing valve partial sum priority valve part, reducing valve partly comprises upper body (1), lower body (2), rubber diaphragm (3), rubber diaphragm pull back spring (4), rubber diaphragm catch (5), it is characterized in that: rubber diaphragm catch (5) is put on the round platform rank (2c) of lower body (2), rubber diaphragm (3) is placed in the circular groove (2a) on the rubber diaphragm catch (5), the outside diameter d of rubber diaphragm (3) is greater than the inside diameter D of the circular groove that holds rubber diaphragm (2a), form the interference fit state, radially annular groove (2b) is arranged on the sidewall of circular groove (2a).
2. the air pressure adjusting valve of reduction confining pressure according to claim 1 and residual pressure is characterized in that: d-D=0.1～1.5mm.
3. the air pressure adjusting valve of reduction confining pressure according to claim 1 and 2 and residual pressure is characterized in that: radially the height of annular groove (2b) is 0.25～0.70 times of rubber matrix (3) peripheral thickness, and radially the width of annular groove (2b) is 1～2.5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200869350U CN201439341U (en) | 2009-06-28 | 2009-06-28 | Air pressure regulating valve for reducing sealing pressure and residual pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200869350U CN201439341U (en) | 2009-06-28 | 2009-06-28 | Air pressure regulating valve for reducing sealing pressure and residual pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201439341U true CN201439341U (en) | 2010-04-21 |
Family
ID=42544008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200869350U Expired - Fee Related CN201439341U (en) | 2009-06-28 | 2009-06-28 | Air pressure regulating valve for reducing sealing pressure and residual pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201439341U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109195842A (en) * | 2016-08-02 | 2019-01-11 | 威伯科欧洲有限责任公司 | Diaphragm valve facility |
-
2009
- 2009-06-28 CN CN2009200869350U patent/CN201439341U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109195842A (en) * | 2016-08-02 | 2019-01-11 | 威伯科欧洲有限责任公司 | Diaphragm valve facility |
| CN109195842B (en) * | 2016-08-02 | 2021-06-15 | 威伯科欧洲有限责任公司 | Diaphragm valve arrangement |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201439341U (en) | Air pressure regulating valve for reducing sealing pressure and residual pressure | |
| CN210334001U (en) | High punching press bending device of security | |
| CN202091411U (en) | Energy-storage piston type spring braking suction and exhaust structure device in air chamber | |
| CN102529770A (en) | Automatic coating tooling equipment for automobile headrest and automatic coating method | |
| CN210554749U (en) | Controllable advance braking device for trailer | |
| CN202669790U (en) | Fast-insertion and fast-release valve | |
| CN202301648U (en) | Double-piston energy storage spring air brake chamber | |
| CN101948091A (en) | Clutch system refueling unit and method | |
| CN203558058U (en) | Rubber diaphragm of air chamber | |
| CN205971278U (en) | Quick release valve assembly | |
| CN102849052A (en) | Air-break air brake system of transportation type tractor | |
| CN202158122U (en) | Double-cylinder brake caliper assembly | |
| CN201380842Y (en) | Automotive hydraulic brake rubber cup with reinforcing rib | |
| CN211338479U (en) | Escalator step roller for long-life subway | |
| CN202468606U (en) | Novel positioning pin | |
| CN202187883U (en) | Decompression mechanism of miniature air pump | |
| CN208311004U (en) | A kind of automobile vacuum pump check valve | |
| CN201872746U (en) | Relay valve | |
| CN202301647U (en) | Single-cavity piston type brake air chamber | |
| CN205854123U (en) | A kind of double diaphragm vacuum booster | |
| CN205601820U (en) | A control valve for car vacuum booster | |
| CN201559651U (en) | Hydraulic braking system | |
| CN204236453U (en) | A kind of bogie brake system | |
| CN202270906U (en) | Composite forging and stamping die | |
| CN201351749Y (en) | Charging connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100421 Termination date: 20150628 |
|
| EXPY | Termination of patent right or utility model |