CN105318050B - A kind of breather check valve - Google Patents
A kind of breather check valve Download PDFInfo
- Publication number
- CN105318050B CN105318050B CN201510413504.0A CN201510413504A CN105318050B CN 105318050 B CN105318050 B CN 105318050B CN 201510413504 A CN201510413504 A CN 201510413504A CN 105318050 B CN105318050 B CN 105318050B
- Authority
- CN
- China
- Prior art keywords
- passage
- sealing gasket
- chassis
- check valve
- positioning seat
- 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.)
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Links
- 238000007789 sealing Methods 0.000 claims abstract description 49
- 238000006073 displacement reaction Methods 0.000 claims description 5
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 2
- 210000002683 foot Anatomy 0.000 description 6
- 239000010721 machine oil Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 3
- 238000009423 ventilation Methods 0.000 description 3
- 239000010687 lubricating oil Substances 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K15/00—Check valves
- F16K15/20—Check valves specially designed for inflatable bodies, e.g. tyres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Check Valves (AREA)
Abstract
The present invention relates to a kind of breather check valve, it is characterised in that：Air inlet pipe is provided with passage, bottom plate, is connected between bottom plate and passage by support, and the sealing gasket that can enter line slip along passage is provided with passage, and the top of passage is provided with spring positioning seat, and the inwall of passage is provided with the guide upright post being engaged with sealing gasket；Described spring positioning seat is formed by connecting by chassis and flange, and chassis is provided with mesh, elastic conjunction between spring positioning seat and passage；Passage is cylindrical, is straight channel or curved passage, and the inwall of passage is provided with guide upright post, and the medial surface of guide upright post is arc surface, and the medial surface of guide upright post is engaged with the lateral surface of sealing gasket.Breather check valve sealing described in type of the present invention is accurate, reliable, and good sealing effect, parts are not easy to wear, while simple in construction, compact, and vent shapes are variable, applied widely.
Description
Technical field
It is specifically a kind of to be used for brake system of car mechanical vacuum the present invention relates to the technical field of vavuum pump accessory
The breather check valve of pump.
Background technology
As requirement of the country to automotive energy-saving emission-reducing and driving safety is more and more stricter, install is provided with solely more on automobile
The brake power-assisted oil-sealed rotary pump of vertical vacuum source, it can take the air in vacuum booster away.Stepped on when driver tramples braking
During plate, vacuum booster amplifies brake pedal force to promote hydraulic pressure by a certain percentage using the vacuum and the difference of atmospheric pressure in it
System make it that taking turns brake controls vehicle to brake, and so as to improving braking effect, it is laborsaving to make to step on brake pedal, ensures safety quick
Braking.
Because oil-sealed rotary pump duration of runs length and speed are high, and produce huge heat, it is therefore desirable to engine lube system
Machine oil in system is lubricated to it, is taken away heat caused by operating and is improved sealing.Vavuum pump passes through check valve and vacuum
Booster is connected, and when vacuum pumping gas, check valve is opened and starts to vacuumize the air of booster；When vavuum pump is by vacuum
When booster is extracted into end vacuum, check valve prevents lubricating oil from backflowing into vacuum booster by closing.If in vavuum pump
Machine oil enters in vacuum booster, and the lubricating oil in vacuum booster operational failure and engine lubrication system can be caused quickly to subtract
It is few.
The conventional breather check valve sealing structure of vacuum pump assembly has umbrella valve and ball valve etc..Ball-type knot of the ball valve by its own
Structure, it is desirable to whole spherical shape tolerance is low, highly polished and have burr, otherwise easily cause sealing surface be bonded it is not firm, and
Seal failure is caused, so as to influence braking ability.
Umbrella valve is sealed in the application of breather check valve, it is necessary to which larger dimensional space ensures that umbrella valve section air intake duct has foot
Enough air inlet areas.In addition, the check valve of umbrella valve sealing is influenceed by self structure so that one end inlet channel of check valve must
It must be straight channel, the adjustment in direction can not be realized, significant limitation is brought to use.
The content of the invention
It is an object of the invention to provide a kind of improved breather check valve, it can overcome in the prior art ball valve easily cause
Seal failure, so as to influence braking ability, umbrella valve inlet channel is necessary for straight channel, can not realize direction adjustment some not
Foot.
To achieve these goals, the technical scheme is that：A kind of breather check valve, it mainly includes air inlet pipe,
It is characterized in that：One end of air inlet pipe is provided with passage, a bottom plate is arranged with air inlet pipe, by setting between bottom plate and passage
The support for having annular groove is connected, and the sealing gasket that can enter line slip along passage is provided with passage, and the top of passage is provided with limit
The spring positioning seat of gasket maximum displacement, the inwall of passage are provided with the guide upright post being engaged with sealing gasket；
Described spring positioning seat is formed by connecting by discoid chassis with the flange for being located at outwardly convex at chassis edge,
Described flange is provided with one group of equally distributed mesh in arc-shaped band body, chassis, and spring positioning seat passes through flange and ventilation
Elastic conjunction is formed between hole；
Passage is cylindrical, is straight channel or curved passage, and the inwall of passage is evenly arranged with least 3 guiding and stood
Post, the medial surface of described guide upright post is arc surface, and sealing gasket is in the form of annular discs, the medial surface of guide upright post and sealing gasket
Lateral surface is engaged, and the radian of the medial surface of guide upright post is more than or equal to the lateral surface radian of sealing gasket.
In use, the breather check valve of the present invention is fixed in vacuum pump case, when vavuum pump starts pumping, due to true
The pressure of empty pumping air cavity is less than vacuum booster internal pressure, in the presence of pressure difference, ventilation of the sealing gasket along air inlet pipe
Hole is slided, and limits largest motion distance by spring positioning seat, and thus breather check valve is opened；When vavuum pump is no longer from vacuum
When booster is evacuated, under the action of the spring, sealing gasket returns to original position to prevent machine oil from backflowing in vacuum booster, this hair
Breather check valve sealing described in bright type is accurate, reliable, and good sealing effect, parts are not easy to wear, while simple in construction, small
Ingeniously, vent shapes are variable, applied widely.
Brief description of the drawings
Fig. 1 is the use state reference chart that the present invention is arranged on vacuum pump assembly.
Fig. 2 is the use state reference chart that the present invention is arranged in vacuum pump case.
Fig. 3 is the configuration schematic diagram of the present invention.
Fig. 4 is the structural representation of one embodiment of the invention.
Fig. 5 is the top view of air inlet pipe of the present invention.
Fig. 6 is the sectional view of air inlet pipe of the present invention.Embodiment
The invention will be further described with reference to the accompanying drawings and examples.
Label in each accompanying drawing represents as follows：
1 vacuum pump assembly, 2 housings, 3 air intake ducts, 4 fixing holes, 5 breather check valves, 6 air inlet pipe, 7 inserts, 8 sealing gaskets, 9
Spring, 10 sealing rings, 11 spring positioning seats, 12 mesh, 13 flanges, 14 annular grooves, 15 passages, 16 guide upright posts, 17 are oriented to
Column medial surface, 18 cylindrical boss, 19 circle shape grooves, 20 support chassis, 21 stent foots.
A kind of breather check valve of the present invention, it mainly includes air inlet pipe, and its difference with the prior art is：Enter
One end of tracheae is provided with passage, is arranged with a bottom plate in air inlet pipe, passes through the branch provided with annular groove between bottom plate and passage
Frame is connected, and the sealing gasket that can enter line slip along passage is provided with passage, and the top of passage is maximum provided with limitation sealing gasket
The spring positioning seat of displacement, the inwall of passage is provided with the guide upright post being engaged with sealing gasket, and guide upright post number 6 is come
Sealing gasket is prevented to be stuck in neutral gear, the wall thickness of lead is 1mm and head end is circular arc；
Described spring positioning seat is formed by connecting by discoid chassis with the flange for being located at outwardly convex at chassis edge,
Described flange is provided with one group of equally distributed mesh in arc-shaped band body, chassis, and spring positioning seat passes through flange and ventilation
Elastic conjunction is formed between hole；
Passage is cylindrical, is straight channel or curved passage, and the inwall of passage is evenly arranged with least 3 guiding and stood
Post, the medial surface of described guide upright post is arc surface, and sealing gasket is in the form of annular discs, the medial surface of guide upright post and sealing gasket
Lateral surface is engaged, and the radian of the medial surface of guide upright post is more than or equal to the lateral surface radian of sealing gasket.The width of guide upright post
For 0.5-1.5mm, the height of guide upright post accounts for the 1/2-5/6 of passage height, and the setting of guide upright post causes sealing gasket
Guiding is played a part of in axial movement, while causes sealing gasket finally to carry out being accurately positioned sealing, and good sealing effect is simultaneously mobile
Or during bounce-back, abrasion is small, service life increase, guide upright post two sides are straight line in addition, and head end is arc structure, relative to increase
Air inlet area is added.
Bottom plate is in drops, and provided with big blunt end and roundlet head end, passage, small round head are provided with the center of big blunt end
Screw hole is provided with end, an inserts is embedded with screw hole.Spring positioning seat bottom is arranged with a spring, and the two of described spring
End is inconsistent with sealing gasket and spring positioning seat respectively, and the top of sealing gasket is provided with cylindrical boss, and cylindrical boss bottom is set
There is the platform of annular shape, one end of spring is fixed on platform and fastened with cylindrical boss, and the cylindrical boss causes bullet
Spring can spiral in the surrounding gap of cylindrical boss upon compression so that spring-compressed is more effective.It is columned in addition
Boss is engaged limitation with spring positioning seat to limit the maximum compressibility of the maximum displacement of sealing gasket and spring.Meeting gas
After flow area, the maximum displacement of sealing gasket is smaller, and motion is more steady and return speed is faster.
A circle shape groove is provided between support and passage, a sealing ring, described branch are embedded with circle shape groove
Frame is formed by connecting by support chassis and stent foot, and support chassis is rounded, and stent foot is arranged at the circumferential edges on support chassis,
Annular groove is formed between adjacent stent foot, the top edge of annular groove connects with support chassis, the lower edge and bottom plate of annular groove
Connect, described annular groove is at least provided with 4, because air inlet pipe is working of plastics, when the setting of annular groove prevents injection molding
Because cylindrical wall is thicker herein causes contraction distortion, while also strengthens the support for passage.The chassis of spring positioning seat
For middle funnel-shaped structure low, surrounding is high, a through hole is provided with the center on chassis, through hole is uniformly distributed on peripheries with 4-10 net
Hole, the setting of mesh cause air-flow is much smoother to enter by spring positioning seat in vavuum pump；The top of passage be provided with one to
At least three flange, described flange one end and bullet is uniformly distributed with the annular platform of outer extension, the chassis surrounding of spring positioning seat
Spring positioning seat is fixedly connected, and the other end is free end, there is certain elasticity tension, the outer wall card and annular platform of described flange
Inwall between formed interference fit, due to the architectural characteristic of flange, the interference fit degree is adjustable.
In implementation, the present invention is used for the mechanical vacuum pump of brake system of car, and such vavuum pump includes：The pump housing, the pump housing
In with vacuum occur room；And the air slot of room and external environment occurs for connection vacuum, air slot connects the position of external environment
Put and carry breather check valve mounting hole, in the breather check valve mounting hole of breather check valve placement here；Housing check valve is pacified
Dress hole side carries breather check valve bolt fixing hole, and breather check valve in itself base surface by being bolted to vavuum pump
On housing.Breather check valve can realize connection and disengaging with vacuum pump case by bolt.
For the breather check valve 5 in the presence of ambient pressure, sealing gasket 8 overcomes the resistance of spring 9 along air inlet pipe 6
Axially directed passage 15 moves, and limits maximum amount of movement by spring positioning seat 11.Sealing gasket 8 no longer seals up air inlet pipe 6
Air intake duct 18, air-flow enters vacuum pump case 2 by the airway 18 of air inlet pipe 6 and the grade of passage 12 of spring positioning seat 11
Air intake duct 3 in, so as to realize air inlet function.
For the breather check valve 5 in vacuum 1 no longer air-breathing of pump assembly, sealing gasket 8 is under the effect of spring 9, along air inlet
The axially directed passage 15 of pipe 6 is moved to original position, seals up the air intake duct 18 of air inlet pipe 6, so as to prevent machine oil from returning to very
In empty booster.
Therefore, the present invention overcome in the prior art ball valve easily cause seal failure, so as to influence braking ability；Overcome big
Influence of the wall thickness of the breather check valve air inlet pipe of capacity vavuum pump to Shooting Technique；It is oriented to by increasing at least three air inlet
Post, overcome the defects of sealing gasket is blocked in air inlet pipe by the neutral gear between lead；By optimizing air inlet guide post structure,
Relative increase air inlet pipe air inlet area.
Above content is to combine specific preferred embodiment further description made for the present invention, it is impossible to is assert
Present invention specific implementation is confined to these above-mentioned explanations.For general technical staff of the technical field of the invention,
Without departing from the inventive concept of the premise, some simple deduction or replace can also be made, should all be considered as belonging to the present invention
Protection domain.
Claims (6)
1. a kind of breather check valve, it mainly includes air inlet pipe, it is characterised in that：One end of air inlet pipe is provided with passage, air inlet
A bottom plate is arranged with pipe, is connected between bottom plate and passage by support provided with annular groove, being provided with passage can be along logical
Stomata enters the sealing gasket of line slip, and the top of passage is provided with the spring positioning seat of limitation sealing gasket maximum displacement, passage
Inwall is provided with the guide upright post being engaged with sealing gasket；Described spring positioning seat is by discoid chassis and is located at chassis edge
The flange of place's outwardly convex is formed by connecting, and described flange is provided with one group of equally distributed mesh in arc-shaped band body, chassis,
Spring positioning seat is by forming elastic conjunction between flange and passage；Passage is cylindrical, is straight channel or curved passage,
The inwall of passage is evenly arranged with least 3 guide upright posts, and the medial surface of described guide upright post is arc surface, is oriented to vertical
Post two sides are straight line, and head end is arc structure, and sealing gasket is in the form of annular discs, the medial surface of guide upright post and the lateral surface of sealing gasket
It is engaged, the radian of the medial surface of guide upright post is more than or equal to the lateral surface radian of sealing gasket.
A kind of 2. breather check valve according to claim 1, it is characterised in that：Bottom plate is in drops, provided with big blunt end
With roundlet head end, passage is provided with the center of big blunt end, screw hole is provided with roundlet head end, it is embedding to be embedded with one in screw hole
Part.
A kind of 3. breather check valve according to claim 1, it is characterised in that：Spring positioning seat bottom is arranged with a bullet
Spring, the both ends of described spring are inconsistent with sealing gasket and spring positioning seat respectively, and the top of sealing gasket is provided with cylindrical boss,
Cylindrical boss bottom is provided with circular platform, and one end of spring is fixed on platform and fastened with cylindrical boss.
A kind of 4. breather check valve according to claim 1, it is characterised in that：An annulus is provided between support and passage
Shape groove, a sealing ring is embedded with circle shape groove, described support is formed by connecting by support chassis and stent foot, support bottom
Disk is rounded, and stent foot is arranged at the circumferential edges on support chassis, and annular groove is formed between adjacent stent foot, annular groove
Top edge connects with support chassis, and the lower edge of annular groove connects with bottom plate, and described annular groove is at least provided with 4.
A kind of 5. breather check valve according to claim 1, it is characterised in that：The chassis of spring positioning seat for it is middle it is low,
The high funnel-shaped structure of surrounding, a through hole is provided with the center on chassis, through hole is uniformly distributed on peripheries with 4-10 mesh；Passage
Top is provided with an annular platform to stretch out, and at least three flange is uniformly distributed with the chassis surrounding of spring positioning seat, described
Interference fit is formed between the outer wall card of flange and the inwall of annular platform.
A kind of 6. breather check valve according to claim 1, it is characterised in that：The width of guide upright post is 0.5-1.5mm,
The height of guide upright post accounts for the 1/2-5/6 of passage height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510413504.0A CN105318050B (en) | 2015-07-15 | 2015-07-15 | A kind of breather check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510413504.0A CN105318050B (en) | 2015-07-15 | 2015-07-15 | A kind of breather check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105318050A CN105318050A (en) | 2016-02-10 |
| CN105318050B true CN105318050B (en) | 2018-03-16 |
Family
ID=55246061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510413504.0A Active CN105318050B (en) | 2015-07-15 | 2015-07-15 | A kind of breather check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105318050B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240419B (en) * | 2020-09-28 | 2023-03-17 | 采埃孚商用车***(青岛)有限公司 | Air inlet terminal and vacuum pump provided with same |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4195661A (en) * | 1977-06-30 | 1980-04-01 | Nissin Kogyo Kabushikia Kaisha | Vacuum type servometer for vehicle use |
| GB2110344A (en) * | 1981-11-27 | 1983-06-15 | Mecano Bundy Gmbh | Non return valve |
| CN201462101U (en) * | 2009-08-28 | 2010-05-12 | 重庆长安汽车股份有限公司 | One-way valve for engine |
| CN202541514U (en) * | 2012-04-17 | 2012-11-21 | 安徽江淮汽车股份有限公司 | One-way valve for automobile hydraulic-brake vacuum booster system |
| CN202574200U (en) * | 2012-05-24 | 2012-12-05 | 戴绍春 | Vacuum pump check valve for automobile |
| CN203363310U (en) * | 2013-05-24 | 2013-12-25 | 宁波奥特唯工具有限公司 | Two-way automatic sealing air valve |
| CN204828813U (en) * | 2015-07-15 | 2015-12-02 | 上海华培动力科技有限公司 | Check valve admits air |
-
2015
- 2015-07-15 CN CN201510413504.0A patent/CN105318050B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4195661A (en) * | 1977-06-30 | 1980-04-01 | Nissin Kogyo Kabushikia Kaisha | Vacuum type servometer for vehicle use |
| GB2110344A (en) * | 1981-11-27 | 1983-06-15 | Mecano Bundy Gmbh | Non return valve |
| CN201462101U (en) * | 2009-08-28 | 2010-05-12 | 重庆长安汽车股份有限公司 | One-way valve for engine |
| CN202541514U (en) * | 2012-04-17 | 2012-11-21 | 安徽江淮汽车股份有限公司 | One-way valve for automobile hydraulic-brake vacuum booster system |
| CN202574200U (en) * | 2012-05-24 | 2012-12-05 | 戴绍春 | Vacuum pump check valve for automobile |
| CN203363310U (en) * | 2013-05-24 | 2013-12-25 | 宁波奥特唯工具有限公司 | Two-way automatic sealing air valve |
| CN204828813U (en) * | 2015-07-15 | 2015-12-02 | 上海华培动力科技有限公司 | Check valve admits air |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105318050A (en) | 2016-02-10 |
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Address after: Song Xiu road Qingpu District Shanghai city 201703 Building No. 218 3 Applicant after: SHANGHAI SINOTEC Co.,Ltd. Address before: Song Xiu road Qingpu District Shanghai city 201703 Building No. 218 3 Applicant before: SHANGHAI SINOTEC TECHNOLOGY Co.,Ltd. |
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Address after: 20106 Three Workshops on No. 218 Songxiu Road, Qingpu District, Shanghai Patentee after: Shanghai Huapei Power Technology (Group) Co.,Ltd. Address before: Song Xiu road Qingpu District Shanghai city 201703 Building No. 218 3 Patentee before: SHANGHAI SINOTEC Co.,Ltd. |
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Address after: 201706 factory building 3, 218 songxiu Road, Qingpu District, Shanghai Patentee after: Shanghai Huapei Digital Energy Technology (Group) Co.,Ltd. Country or region after: China Address before: 201706 factory building 3, 218 songxiu Road, Qingpu District, Shanghai Patentee before: Shanghai Huapei Power Technology (Group) Co.,Ltd. Country or region before: China |