CN206860325U - A kind of dual face seals cover structure for fuel tank - Google Patents
A kind of dual face seals cover structure for fuel tank Download PDFInfo
- Publication number
- CN206860325U CN206860325U CN201720637567.9U CN201720637567U CN206860325U CN 206860325 U CN206860325 U CN 206860325U CN 201720637567 U CN201720637567 U CN 201720637567U CN 206860325 U CN206860325 U CN 206860325U
- Authority
- CN
- China
- Prior art keywords
- fuel tank
- bulge loop
- sealing
- sealing bulge
- inlet pipe
- 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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- Closures For Containers (AREA)
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The utility model discloses a kind of dual face seals cover structure for fuel tank, including cover plate, external seal cylinder, interior sealing cylinder, fuel tank oil inlet pipe and elastic pre-pressing structure；External seal cylinder extends downwardly from the edge of cover plate；Interior sealing cylinder extends downwardly from the lower surface of cover plate；Interior sealing cylinder and external seal cylinder are coaxial；The inner surface setting of external seal cylinder has the first sealing bulge loop；The outer surface of interior sealing cylinder is provided with the second sealing bulge loop；First sealing bulge loop and the second sealing bulge loop are made up of elastomeric material；The outer peripheral face of fuel tank oil inlet pipe offers the first closure gasket groove；The cross sectional shape of first closure gasket groove is adapted with the first sealing bulge loop；First sealing bulge loop is embedded in the first closure gasket groove；The inner peripheral surface of fuel tank oil inlet pipe offers the second closure gasket groove；The cross sectional shape of second closure gasket groove is adapted with the second sealing bulge loop；Second sealing bulge loop is embedded in the second closure gasket groove.The utility model realizes the dual face seals to fuel tank oil inlet pipe inner peripheral surface and outer peripheral face, improves sealing property.
Description
Technical field
It the utility model is related to technical field of internal combustion engines, more particularly to a kind of dual face seals cover structure for fuel tank.
Background technology
Fuel oil required for internal combustion engine is stored in fuel tank.In order to supplement fuel oil into fuel tank, it is necessary on fuel tank
Oil inlet pipe is set.In order to avoid fuel oil caused by the fuel oil leakage or volatilization in fuel tank is wasted, it is necessary to set oil at oil inlet pipe
Case lid.Generally there was only a sealing surface between existing fuel tank cap and oil inlet pipe, this causes the fuel oil in fuel tank after volatilizing can
The sealing surface between fuel tank cap and oil inlet pipe is enough easily passed through, causes the leakage of fuel oil.This not only causes the waste of fuel oil,
Also create potential safety hazard.
Utility model content
The purpose of this utility model is to overcome the above mentioned problem of prior art, there is provided a kind of dual face seals cover structure for fuel tank.
The purpose of this utility model is achieved through the following technical solutions：
A kind of dual face seals cover structure for fuel tank, including cover plate, external seal cylinder, interior sealing cylinder, fuel tank oil inlet pipe and elasticity are pre-
Locking structure；
The external seal cylinder extends downwardly from the edge of the cover plate；The interior sealing cylinder from the following table of the cover plate towards
Lower extension；The interior sealing cylinder and the external seal cylinder are coaxial；The inner surface setting of the external seal cylinder has the first sealing bulge loop；
The sectional area of the first sealing bulge loop is radially-inwardly gradually reduced；It is convex that the outer surface of the interior sealing cylinder is provided with the second sealing
Ring；The sectional area of the second sealing bulge loop is radially outward gradually reduced；The first sealing bulge loop and second sealing are convex
Ring is made up of elastomeric material；The outer peripheral face of the fuel tank oil inlet pipe offers the first closure gasket groove；First closure gasket groove
Cross sectional shape is adapted with the described first sealing bulge loop；The first sealing bulge loop is embedded in first closure gasket groove；It is described
The inner peripheral surface of fuel tank oil inlet pipe offers the second closure gasket groove；The cross sectional shape of second closure gasket groove and the described second sealing
Bulge loop is adapted；The second sealing bulge loop is embedded in second closure gasket groove；
The inner peripheral surface of the external seal cylinder is provided with internal thread segment；The internal thread segment is below the first sealing bulge loop；
The outer peripheral face of the fuel tank oil inlet pipe is provided with external thread section；The external thread section is located at below first closure gasket groove；Institute
Internal thread segment is stated with the external thread section screw thread to coordinate；
The elastic pre-pressing structure be arranged on the fuel tank oil inlet pipe upper end and with the lower surface of the cover plate against.
Operation principle of the present utility model is as follows：
Coordinated by the screw thread of internal thread segment and external thread section, so as to which cover plate be pulled down from fuel tank oil inlet pipe, or will
Cover plate is attached on fuel tank oil inlet pipe.During cover plate is attached on oil inlet pipe, the first sealing bulge loop and the second sealing
Outer peripheral face of the bulge loop first with fuel tank oil inlet pipe is against the first sealing bulge loop and the second sealing bulge loop are compressed.With cover plate by
Gradually move downward, the first sealing bulge loop and the second sealing bulge loop respectively enter the first closure gasket groove and the second closure gasket groove.In this way,
The dual face seals to fuel tank oil inlet pipe inner peripheral surface and outer peripheral face are realized, improve sealing property, fuel oil can be avoided to volatilize
Leakage afterwards, the waste for the fuel oil that slowed down, has prevented potential safety hazard.Elastic pre-pressing structure be arranged on fuel tank oil inlet pipe upper end and with
The lower surface of cover plate against, can to cover plate provide pretightning force, avoid cover plate from undesirably falling off fuel tank oil inlet pipe, improve safety
Property.
Further, the elastic pre-pressing structure includes being opened in the receiving hole of the fuel tank oil inlet pipe upper surface, sets
Elastic component in the receiving hole, and the pretension post that lower end is connected with the elastic component；The upper end of the pretension post and institute
State the lower surface of cover plate against.
Elastic pre-pressing structure is formed by pretension post, elastic component and receiving hole, its is simple in construction, and cost is low.
Further, the upper surface of the pretension post is circular arc.
The upper surface of pretension post is circular arc, reduces the contact area area of pretension post and cover plate so that pretension post with
Relative motion between cover plate is more smooth.
Further, the upper end inner peripheral surface of the receiving hole sets restraining position ring block；The lower end of the pretension post sets limited
Position block；The limited block be located in the receiving hole and with the spacing ring against；The elastic component is connected with the limited block.
Spacing ring and limited block are set, can be avoided after cover plate is pulled down, pretension post departs from receiving hole, improves this practicality
New job stability.
Further, the elastic component is spring.
The utility model has the advantages that：
1. coordinated by the screw thread of internal thread segment and external thread section, so as to which cover plate be pulled down from fuel tank oil inlet pipe, or
Cover plate is attached on fuel tank oil inlet pipe.During cover plate is attached on oil inlet pipe, the first sealing bulge loop and second close
Outer peripheral face of the bulge loop first with fuel tank oil inlet pipe is sealed against the first sealing bulge loop and the second sealing bulge loop are compressed.With cover plate
Move gradually downward, the first sealing bulge loop and the second sealing bulge loop respectively enter the first closure gasket groove and the second closure gasket groove.Such as
This, realizes the dual face seals to fuel tank oil inlet pipe inner peripheral surface and outer peripheral face, improves sealing property, fuel oil can be avoided to wave
Leakage after hair, the waste for the fuel oil that slowed down, has prevented potential safety hazard.Elastic pre-pressing structure is arranged on fuel tank oil inlet pipe upper end simultaneously
With the lower surface of cover plate against can provide pretightning force to cover plate, avoid cover plate from undesirably falling off fuel tank oil inlet pipe, improve safety
Property.
2. forming elastic pre-pressing structure by pretension post, elastic component and receiving hole, its is simple in construction, and cost is low.
3. the upper surface of pretension post is circular arc, the contact area area of pretension post and cover plate is reduced so that pretension post
Relative motion between cover plate is more smooth.
4. setting spacing ring and limited block, it can avoid after cover plate is pulled down, pretension post departs from receiving hole, improves this reality
With new job stability.
Brief description of the drawings
, below will be to needed for description the utility model embodiment in order to illustrate more clearly of embodiment of the present utility model
The accompanying drawing to be used is briefly described.It will be apparent that drawings in the following description are only described in the utility model
Some embodiments, for a person skilled in the art, without creative efforts, can also be according to following
Accompanying drawing, obtain other accompanying drawings.
Fig. 1 is structural representation of the present utility model.
Wherein：10- cover plates, 20- external seal cylinders, 21- first seal bulge loop, 30- interior sealing cylinders, and 31- second seals bulge loop,
40- fuel tank oil inlet pipes, the closure gasket grooves of 41- first, the closure gasket grooves of 42- second, 43- receiving holes, 44- elastic components, 45- pretension posts,
46- spacing rings, 47- limited blocks.
Embodiment
In order that those skilled in the art more fully understands the utility model, below in conjunction with the utility model embodiment
In accompanying drawing clear, complete description is carried out to the technical scheme in the embodiment of the utility model.It is it will be apparent that described below
Embodiment be only a part in the utility model embodiment, rather than all.The implementation recorded based on the utility model
Example, other all embodiments that those skilled in the art obtain without creative efforts are new in this practicality
In the range of type protection.
Embodiment 1
As shown in figure 1, a kind of dual face seals cover structure for fuel tank, including cover plate 10, external seal cylinder 20, interior sealing cylinder 30, oil
Case oil inlet pipe 40 and elastic pre-pressing structure；The external seal cylinder 20 extends downwardly from the edge of the cover plate 10；The interior sealing
Cylinder 30 extends downwardly from the lower surface of the cover plate 10；The interior sealing cylinder 30 and the external seal cylinder 20 are coaxial；It is described outer close
The inner surface setting of sealed tube 20 has the first sealing bulge loop 21；The sectional area of the first sealing bulge loop 21 radially-inwardly gradually subtracts
It is small；The outer surface of the interior sealing cylinder 30 is provided with the second sealing bulge loop 31；The sectional area of the second sealing bulge loop 31 is radially
Outwards it is gradually reduced；The first sealing bulge loop 21 and the second sealing bulge loop 31 are made up of elastomeric material；The fuel tank enters
The outer peripheral face of oil pipe 40 offers the first closure gasket groove 41；The cross sectional shape of first closure gasket groove 41 and the described first sealing
Bulge loop 21 is adapted；The first sealing bulge loop 21 is embedded in first closure gasket groove 41；The fuel tank oil inlet pipe 40 it is interior
Side face offers the second closure gasket groove 42；The cross sectional shape of second closure gasket groove 42 is fitted with the described second sealing phase of bulge loop 31
Should；The second sealing bulge loop 31 is embedded in second closure gasket groove 42；In the inner peripheral surface of the external seal cylinder 20 is provided with
Thread segment；The internal thread segment is positioned at the lower section of the first sealing bulge loop 21；The outer peripheral face of the fuel tank oil inlet pipe 40 is provided with outer spiral shell
Line section；The external thread section is positioned at the lower section of the first closure gasket groove 41；The internal thread segment is matched somebody with somebody with the external thread section screw thread
Close；The elastic pre-pressing structure be arranged on the upper end of fuel tank oil inlet pipe 40 and with the lower surface of the cover plate 10 against.
Operation principle of the present utility model is as follows：
Coordinated by the screw thread of internal thread segment and external thread section, so as to which cover plate 10 be pulled down from fuel tank oil inlet pipe 40, or
Cover plate 10 is attached on fuel tank oil inlet pipe 40 by person.During cover plate 10 is attached on oil inlet pipe 40, the first sealing is convex
Ring 21 and second seals outer peripheral face of the bulge loop 31 first with fuel tank oil inlet pipe 40 against the first sealing sealing of bulge loop 21 and second is convex
Ring 31 is compressed.As cover plate 10 moves gradually downward, the first sealing bulge loop 21 and second seals bulge loop 31 and respectively enters first
The closure gasket groove 42 of closure gasket groove 41 and second.In this way, the dual face seals to the inner peripheral surface of fuel tank oil inlet pipe 40 and outer peripheral face are realized,
Sealing property is improved, the leakage of fuel oil after volatilizing can be avoided, the waste for the fuel oil that slowed down, prevented potential safety hazard.Bullet
Property pre-pressing structure be arranged on the upper end of fuel tank oil inlet pipe 40 and with the lower surface of cover plate 10 against pretension can be provided to cover plate 10
Power, avoid cover plate 10 from undesirably falling off fuel tank oil inlet pipe 40, improve security.
Further, as shown in figure 1, in wherein a kind of embodiment, the elastic pre-pressing structure includes being opened in institute
State the receiving hole 43 of the upper surface of fuel tank oil inlet pipe 40, the elastic component 44 being arranged in the receiving hole 43, and lower end with it is described
The pretension post 45 that elastic component 44 connects；The lower surface of the upper end of the pretension post 45 and the cover plate 10 against.
Elastic pre-pressing structure is formed by pretension post 45, elastic component 44 and receiving hole 43, its is simple in construction, and cost is low.
Further, as shown in figure 1, in wherein a kind of embodiment, the upper surface of the pretension post 45 is circular arc.
The upper surface of pretension post 45 is circular arc, reduces the contact area area of pretension post 45 and cover plate 10 so that pre-
Relative motion tightly between post 45 and cover plate 10 is more smooth.
Further, as shown in figure 1, in wherein a kind of embodiment, the upper end inner peripheral surface of the receiving hole 43 is set
Restraining position ring block 46；The lower end of the pretension post 45 is provided with limited block 47；The limited block 47 is located in the receiving hole 43 simultaneously
With the spacing ring 46 against；The elastic component 44 is connected with the limited block 47.
Spacing ring 46 and limited block 47 are set, can be avoided after cover plate 10 is pulled down, pretension post 45 departs from receiving hole 43, carries
High job stability of the present utility model.
Further, as shown in figure 1, in wherein a kind of embodiment, the elastic component 44 is spring.
Above content is to combine the further description that specific preferred embodiment is made to the utility model, it is impossible to is recognized
Determine specific embodiment of the present utility model and be confined to these explanations.For the common skill of the utility model art
For art personnel, the other embodiment that is drawn in the case where not departing from the technical solution of the utility model should be included in this practicality
In new protection domain.
Claims (5)
- A kind of 1. dual face seals cover structure for fuel tank, it is characterised in that：Including cover plate（10）, external seal cylinder（20）, interior sealing cylinder （30）, fuel tank oil inlet pipe（40）With elastic pre-pressing structure；The external seal cylinder（20）From the cover plate（10）Edge extend downwardly；The interior sealing cylinder（30）From the cover plate （10）Lower surface extend downwardly；The interior sealing cylinder（30）With the external seal cylinder（20）Coaxially；The external seal cylinder（20） Inner surface setting have the first sealing bulge loop（21）；The first sealing bulge loop（21）Sectional area be radially-inwardly gradually reduced； The interior sealing cylinder（30）Outer surface be provided with the second sealing bulge loop（31）；The second sealing bulge loop（31）Sectional area footpath To being outwards gradually reduced；The first sealing bulge loop（21）With the described second sealing bulge loop（31）It is made up of elastomeric material；It is described Fuel tank oil inlet pipe（40）Outer peripheral face offer the first closure gasket groove（41）；First closure gasket groove（41）Cross sectional shape with The first sealing bulge loop（21）It is adapted；The first sealing bulge loop（21）Embedded first closure gasket groove（41）In；Institute State fuel tank oil inlet pipe（40）Inner peripheral surface offer the second closure gasket groove（42）；Second closure gasket groove（42）Cross sectional shape With the described second sealing bulge loop（31）It is adapted；The second sealing bulge loop（31）Embedded second closure gasket groove（42）In；The external seal cylinder（20）Inner peripheral surface be provided with internal thread segment；The internal thread segment is positioned at the first sealing bulge loop（21）Under Side；The fuel tank oil inlet pipe（40）Outer peripheral face be provided with external thread section；The external thread section is located at first closure gasket groove （41）Lower section；The internal thread segment coordinates with the external thread section screw thread；The elastic pre-pressing structure is arranged on the fuel tank oil inlet pipe（40）Upper end and with the cover plate（10）Lower surface against.
- A kind of 2. dual face seals cover structure for fuel tank according to claim 1, it is characterised in that：The elastic pre-pressing structure bag Include and be opened in the fuel tank oil inlet pipe（40）The receiving hole of upper surface（43）, it is arranged on the receiving hole（43）Interior elastic component （44）, and lower end and the elastic component（44）The pretension post of connection（45）；The pretension post（45）Upper end and the cover plate （10）Lower surface against.
- A kind of 3. dual face seals cover structure for fuel tank according to claim 2, it is characterised in that：The pretension post（45）It is upper End face is circular arc.
- A kind of 4. dual face seals cover structure for fuel tank according to claim 2, it is characterised in that：The receiving hole（43）It is upper Hold inner peripheral surface that restraining position ring block is set（46）；The pretension post（45）Lower end be provided with limited block（47）；The limited block（47） Positioned at the receiving hole（43）It is interior and with the spacing ring（46）Against；The elastic component（44）With the limited block（47）Even Connect.
- A kind of 5. dual face seals cover structure for fuel tank according to claim 2, it is characterised in that：The elastic component（44）For bullet Spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720637567.9U CN206860325U (en) | 2017-06-02 | 2017-06-02 | A kind of dual face seals cover structure for fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720637567.9U CN206860325U (en) | 2017-06-02 | 2017-06-02 | A kind of dual face seals cover structure for fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206860325U true CN206860325U (en) | 2018-01-09 |
Family
ID=60830359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720637567.9U Expired - Fee Related CN206860325U (en) | 2017-06-02 | 2017-06-02 | A kind of dual face seals cover structure for fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206860325U (en) |
-
2017
- 2017-06-02 CN CN201720637567.9U patent/CN206860325U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180109 Termination date: 20190602 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |