CN108167485A - A kind of oil filler cap structure of positive pressure check valve - Google Patents
A kind of oil filler cap structure of positive pressure check valve Download PDFInfo
- Publication number
- CN108167485A CN108167485A CN201810120452.1A CN201810120452A CN108167485A CN 108167485 A CN108167485 A CN 108167485A CN 201810120452 A CN201810120452 A CN 201810120452A CN 108167485 A CN108167485 A CN 108167485A
- Authority
- CN
- China
- Prior art keywords
- cavity
- backup pad
- linear springs
- positive pressure
- check valve
- 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.)
- Granted
Links
- 239000000945 filler Substances 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 claims abstract description 33
- 210000000078 claw Anatomy 0.000 claims description 19
- 230000008685 targeting Effects 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 4
- 239000000446 fuel Substances 0.000 abstract description 8
- 230000008016 vaporization Effects 0.000 abstract description 4
- 238000009834 vaporization Methods 0.000 abstract description 4
- 238000007789 sealing Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 230000002457 bidirectional effect Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000005476 soldering Methods 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
-
- 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
- F16K15/02—Check valves with guided rigid valve members
- F16K15/025—Check valves with guided rigid valve members the valve being loaded by a spring
-
- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The present invention provides a kind of oil filler cap structures of positive pressure check valve, reduce discharge vaporization limit value, the mistake for the fuel system for reducing OBD negative pressure detecting scheme detects the frequency, and at low cost.It includes valve body, upper cover, and the valve body lower portion is provided with spool installation cavity, and the spool is arranged in the spool installation cavity, and the upper cover lid is loaded on the upper surface of the valve body, it is characterised in that：The normal position of the spool installation cavity is provided with guiding parts cavity, it has been sequentially arranged inner seal liner from bottom to top in the guiding parts cavity, lower supporting plate, upper backup pad, the diameter of the guiding parts cavity is more than the top diameter of the spool installation cavity, the top area of the main spool installation cavity of lower face capping of the inner seal liner, lower supporting plate is pressed in the upper surface of the inner seal liner, the lower supporting plate, the vertical of upper backup pad is disposed with linear springs into cavity, installation cavity corresponding to linear springs is specially linear springs guiding area cavity.
Description
Technical field
The present invention relates to the technical field of injecting products destressing, specially a kind of filler cap knot of positive pressure check valve
Structure.
Background technology
It is mostly at present positive pressure/negative pressure bidirectional valve arrangement applied to the filler cap of automotive fuel oil system, this mainly considers
Under certain condition, fuel system can balance its internal pressure with outside by filler cap, and oil tank system is reduced with this
Deform, promoted the soldering reliability of various valves and the whole service life for promoting fuel system.
But with the hair of national 6th stage " light-duty vehicle pollutant emission limit and measuring method " draft regulation
On the one hand cloth strengthens the discharge vaporization limit value of IV types test；On the other hand mandatory requirement onboard diagnostics (OBD) system.Tradition
Positive pressure/negative pressure bidirectional valve arrangement because being duplex channel structure design, cause discharge vaporization limit value increase, can not meet compared with
For stringent six laws and regulations requirement of state.Meanwhile main OBD detectings scheme is divided into two kinds, respectively positive pressure detecting and negative pressure at present
Detecting, the filler cap of positive pressure/negative pressure bidirectional valve arrangement design are easy to cause OBD detecting false alarm frequencies under certain condition
It is secondary, it causes to perplex.
Invention content
In view of the above-mentioned problems, the present invention provides a kind of oil filler cap structure of positive pressure check valve, discharge vaporization is reduced
Limit value reduces the mistake detecting frequency that OBD negative pressure detects the fuel system of scheme, and at low cost.
A kind of oil filler cap structure of positive pressure check valve, technical solution is such：It includes valve body, upper cover, described
Valve body lower portion is provided with spool installation cavity, and the spool is arranged in the spool installation cavity, and the upper cover lid is loaded on the valve
The upper surface of body, it is characterised in that：The normal position of the spool installation cavity is provided with guiding parts cavity, the guide part
Inner seal liner, lower supporting plate, upper backup pad are sequentially arranged in part cavity from bottom to top, the diameter of the guiding parts cavity is big
In the top diameter of the spool installation cavity, the top region of the main spool installation cavity of lower face capping of the inner seal liner
Domain, lower supporting plate press fitting in the upper surface of the inner seal liner, the lower supporting plate, upper backup pad it is vertical into cavity
Linear springs are disposed with, the installation cavity corresponding to the linear springs is specially linear springs guiding area cavity, described straight
Wire spring guiding area cavity top is provided with upper backup pad region, and the diameter in the upper backup pad region is more than the straight line bullet
The diameter of spring guiding area cavity, the upper backup pad are installed in the upper backup pad installation region.
It is further characterized by：The upper backup pad installation region is specially the interior hook claw combination shape of several ring cloth
Into the height of the interior linking arm for hooking claw is equal to the thickness of the upper backup pad, and the interior claw for hooking claw pushes down institute
State the upper surface of upper backup pad；
The upper end inclined-plane of the interior claw for hooking claw is centroclinal face from top to bottom, facilitates upper backup pad vertical
To plug be loaded into；
The upper backup pad, which further includes down, is exposed to targeting part on the spring of the linear springs guiding area cavity, institute
It states lower supporting plate and further includes the convex targeting part under the spring of institute's linear springs guiding area cavity, it is ensured that linear springs
The guiding installation of upper/lower terminal；
Targeting part is outer guide ring under the spring, and the lower end outer rim of the linear springs is located at the outer guide ring
Inner wall area position；
The outer ring surface of targeting part is coated by the upper end of the linear springs on the spring；
External seal is set with behind upper surface of the upper cover lid loaded on the valve body, on the intermediate connecting ring face that it is formed
Part；
The inner seal liner is specially rubber seal.
Positive pressure one-way valve structures using the present invention, a linear springs only in need, and do not need to using existing
Vacuum valve used by structure, so as to reduce cost；Meanwhile it when fuel system internal pressure increases to design value, can push
Inner seal liner moves upwards, and overcomes the initial pressure of linear springs, so as to open sealing surface, positive pressure pressure release is carried out, until system
Pressure drops to design value and can just terminate, and further keeps sealing；When fuel system carries out the detecting of OBD negative pressure, i.e., upper cover is interior
When portion's pressure is less than external pressure, inner seal liner can only be squeezed tighter, sealing is tighter, and system will not detect herein close
Envelope leakage reduces the negative pressure OBD detecting false alarm frequencys with this.
Description of the drawings
Fig. 1 is the main view schematic cross-sectional view of the present invention；
Title in figure corresponding to serial number is as follows：
Valve body 1, upper cover 2, spool installation cavity 3, spool 4, guiding parts cavity 5, inner seal liner 6, lower supporting plate 7, upper branch
Fagging 8, linear springs 9, linear springs guiding area cavity 10, upper backup pad region 11, interior hook claw 12, linking arm 13, pawl
Portion 14, upper end inclined-plane 15, targeting part 17, outside seal 18 under targeting part 16, spring on spring.
Specific embodiment
A kind of oil filler cap structure of positive pressure check valve, is shown in Fig. 1：It includes valve body 1, upper cover 2, and 1 lower part of valve body is provided with
Spool installation cavity 3, spool 4 are arranged in spool installation cavity 3, and upper surface of the lid of upper cover 2 loaded on valve body 1, spool installation cavity 3 hangs down
Guiding parts cavity 5 directly is arranged above, 5 have been sequentially arranged inner seal liner 6, lower support from bottom to top in guiding parts cavity
Plate 7, upper backup pad 8, the diameter of guiding parts cavity 5 are more than the top diameter of spool installation cavity 3, the lower face of inner seal liner 6
The top area of main valve plug installation cavity 3 is covered, lower supporting plate 7 is pressed in the upper surface of inner seal liner 6, lower supporting plate 7, upper support
The vertical of plate 8 is disposed with linear springs 9 into cavity, and the installation cavity corresponding to linear springs 9 is specially that linear springs are oriented to
Region cavity 10,10 top of linear springs guiding area cavity are provided with upper backup pad region 11, upper backup pad region 11 it is straight
Diameter is more than the diameter of linear springs guiding area cavity 10, and upper backup pad 8 is installed in upper backup pad installation region 11.
Upper backup pad installation region 11 is specially that interior hook claw 12 combination of several ring cloth is formed, the interior connection for hooking claw 12
The height of arm 13 is equal to the thickness of upper backup pad 8, and the interior claw 14 for hooking claw 12 pushes down the upper surface of upper backup pad 8；
The upper end inclined-plane 15 of the interior claw 14 for hooking claw 12 is centroclinal face from top to bottom, facilitates upper backup pad 8
Vertically to plug be loaded into；
Upper backup pad 8, which further includes down, is exposed to targeting part 16 on the spring of linear springs guiding area cavity 10, lower branch
Fagging 7 further includes the convex targeting part 17 under the spring of linear springs guiding area cavity 10, it is ensured that linear springs 9
The guiding installation of upper/lower terminal；
Targeting part 17 is outer guide ring under spring, and the lower end outer rim of linear springs 9 is located at the inner wall area of outer guide ring
Position；
The outer ring surface of targeting part 16 is coated by the upper end of linear springs 9 on spring；
Outside seal 18 is set with behind 1 upper surface of the lid of upper cover 2 loaded on valve body, on the intermediate connecting ring face that it is formed；
Inner seal liner 6 is specially rubber seal.
Its operation principle is as follows：Its linear springs only in need, and do not need to using used by existing structure
Vacuum valve, so as to reduce cost；Meanwhile when fuel system internal pressure increases to design value, inner seal liner can be pushed upward
Movement overcomes the initial pressure of linear springs, so as to open sealing surface, carries out positive pressure pressure release, until system pressure drops to design
Value can just terminate, and further keep sealing；When fuel system carries out the detecting of OBD negative pressure, i.e., the internal pressure of upper cover is less than outer
During portion's pressure, what can only be squeezed inner seal liner is tighter, and sealing is tighter, and system will not detect seal leakage herein, with this
Reduce the negative pressure OBD detecting false alarm frequencys.
Specific embodiments of the present invention are described in detail above, but content is only the preferable implementation of the invention
Example, it is impossible to be construed as limiting the practical range of the invention.All impartial changes made according to the invention application range
Change and improvement etc., should all still belong within this patent covering scope.
Claims (8)
1. a kind of oil filler cap structure of positive pressure check valve, including valve body, upper cover, the valve body lower portion is provided with spool installation
Chamber, the spool are arranged in the spool installation cavity, and the upper cover lid is loaded on the upper surface of the valve body, it is characterised in that：
The normal position of the spool installation cavity is provided with guiding parts cavity, is sequentially set from bottom to top in the guiding parts cavity
Inner seal liner, lower supporting plate, upper backup pad are equipped with, the diameter of the guiding parts cavity is more than the top of the spool installation cavity
Diameter, the top area of the main spool installation cavity of lower face capping of the inner seal liner, the lower supporting plate press fitting is in institute
The upper surface of inner seal liner is stated, the lower supporting plate, the vertical of upper backup pad are disposed with linear springs, the straight line into cavity
Installation cavity corresponding to spring is specially linear springs guiding area cavity, and the linear springs guiding area cavity top is set
Upper backup pad region is equipped with, the diameter in the upper backup pad region is more than the diameter of the linear springs guiding area cavity, institute
It states upper backup pad and is installed in the upper backup pad installation region.
2. a kind of oil filler cap structure of positive pressure check valve as described in claim 1, it is characterised in that：The upper backup pad peace
Dress region is specially that the interior hook claw of several ring cloth combines to be formed, and the height of the interior linking arm for hooking claw is equal to the upper branch
The thickness of fagging, the interior claw for hooking claw push down the upper surface of the upper backup pad.
3. a kind of oil filler cap structure of positive pressure check valve as claimed in claim 2, it is characterised in that：The interior hook claw
The upper end inclined-plane of claw is centroclinal face from top to bottom.
4. a kind of oil filler cap structure of positive pressure check valve as described in claim 1, it is characterised in that：The upper backup pad is also
Targeting part on the spring of the linear springs guiding area cavity is exposed under including, the lower supporting plate has further included convex
The targeting part under the spring of institute's linear springs guiding area cavity, it is ensured that the guiding installation of the upper/lower terminal of linear springs.
5. a kind of oil filler cap structure of positive pressure check valve as claimed in claim 4, it is characterised in that：It is oriented under the spring
Part is outer guide ring, and the lower end outer rim of the linear springs is located at the inner wall area position of the outer guide ring.
6. a kind of oil filler cap structure of positive pressure check valve as claimed in claim 4, it is characterised in that：It is oriented on the spring
Partial outer ring surface is coated by the upper end of the linear springs.
7. a kind of oil filler cap structure of positive pressure check valve as described in claim 1, it is characterised in that：The upper cover lid is loaded on
Outside seal is set with behind the upper surface of the valve body, on the intermediate connecting ring face that it is formed.
8. a kind of oil filler cap structure of positive pressure check valve as described in claim 1, it is characterised in that：The inner seal liner tool
Body is rubber seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120452.1A CN108167485B (en) | 2018-02-07 | 2018-02-07 | Filler cap structure of positive pressure check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810120452.1A CN108167485B (en) | 2018-02-07 | 2018-02-07 | Filler cap structure of positive pressure check valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108167485A true CN108167485A (en) | 2018-06-15 |
| CN108167485B CN108167485B (en) | 2024-03-26 |
Family
ID=62513543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810120452.1A Active CN108167485B (en) | 2018-02-07 | 2018-02-07 | Filler cap structure of positive pressure check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108167485B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3532925C1 (en) * | 1985-09-14 | 1986-09-25 | H. Köhler KG, 4780 Lippstadt | Bayonet closure lid for a container, in particular for the fuel tank of a motor vehicle |
| CN201258051Y (en) * | 2008-09-12 | 2009-06-17 | 瑞泰动力集团有限公司 | Fuel volatilization control device of motorcycle fuel tank lid |
| CN202669468U (en) * | 2012-04-19 | 2013-01-16 | 斯丹德汽车***（苏州）有限公司 | Separation protection type fuel tank cap mounted on position of oil filling pipe mouth |
| CN203836319U (en) * | 2014-02-26 | 2014-09-17 | 北汽福田汽车股份有限公司 | Fuel tank cover valve and fuel tank cover |
| CN204296450U (en) * | 2014-11-29 | 2015-04-29 | 北京长安汽车工程技术研究有限责任公司 | A kind of fuel filler cap filler cap |
| CN204774623U (en) * | 2015-08-11 | 2015-11-18 | 麦格纳斯太尔汽车技术（上海）有限公司 | Car oil filler hole locking lid |
| CN208058048U (en) * | 2018-02-07 | 2018-11-06 | 斯丹德汽车***（苏州）有限公司 | A kind of oil filler cap structure of positive pressure check valve |
-
2018
- 2018-02-07 CN CN201810120452.1A patent/CN108167485B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3532925C1 (en) * | 1985-09-14 | 1986-09-25 | H. Köhler KG, 4780 Lippstadt | Bayonet closure lid for a container, in particular for the fuel tank of a motor vehicle |
| CN201258051Y (en) * | 2008-09-12 | 2009-06-17 | 瑞泰动力集团有限公司 | Fuel volatilization control device of motorcycle fuel tank lid |
| CN202669468U (en) * | 2012-04-19 | 2013-01-16 | 斯丹德汽车***（苏州）有限公司 | Separation protection type fuel tank cap mounted on position of oil filling pipe mouth |
| CN203836319U (en) * | 2014-02-26 | 2014-09-17 | 北汽福田汽车股份有限公司 | Fuel tank cover valve and fuel tank cover |
| CN204296450U (en) * | 2014-11-29 | 2015-04-29 | 北京长安汽车工程技术研究有限责任公司 | A kind of fuel filler cap filler cap |
| CN204774623U (en) * | 2015-08-11 | 2015-11-18 | 麦格纳斯太尔汽车技术（上海）有限公司 | Car oil filler hole locking lid |
| CN208058048U (en) * | 2018-02-07 | 2018-11-06 | 斯丹德汽车***（苏州）有限公司 | A kind of oil filler cap structure of positive pressure check valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108167485B (en) | 2024-03-26 |
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