CN201201508Y - Fuel filling pipe cap of automobile fuel tank - Google Patents
Fuel filling pipe cap of automobile fuel tank Download PDFInfo
- Publication number
- CN201201508Y CN201201508Y CNU200820084440XU CN200820084440U CN201201508Y CN 201201508 Y CN201201508 Y CN 201201508Y CN U200820084440X U CNU200820084440X U CN U200820084440XU CN 200820084440 U CN200820084440 U CN 200820084440U CN 201201508 Y CN201201508 Y CN 201201508Y
- Authority
- CN
- China
- Prior art keywords
- cover
- negative pressure
- pressure spring
- spring
- fuel tank
- 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 - Lifetime
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Abstract
The utility model relates to a cover for an oil filling pipe of an automotive fuel tank, which comprises a cover, wherein a threaded shell is arranged in the cover; a rubber sealing ring is sleeved on the threaded shell. The cover for the oil filling pipe of the automotive fuel tank is characterized in that a negative pressure on-off device and a positive pressure on-off device are arranged in the threaded shell; the negative pressure on-off device consists of a negative pressure spring arranged at the bottom of the threaded shell, a negative pressure spring cover sleeved on the negative pressure spring, and a rubber gasket which is arranged on the negative pressure spring cover; the positive pressure on-off device consists of a positive pressure spring collet which is sleeved with the rubber gasket, a positive pressure spring which is arranged on the positive pressure spring collet, and a positive pressure spring cover which is arranged on the positive pressure spring; and the positive pressure spring cover is fixedly connected with the threaded shell. The cover for the oil filling pipe of the automotive fuel tank can prevent the sealed fuel tank from leaking fuel, meanwhile can automatically start to release and balance the oil pressure with the change of positive and negative pressures in the fuel tank, and has a simple structure, reliability and practicality.
Description
Technical field
The utility model relates to a kind of automotive oil tank part, relate in particular to a kind of at leak free simultaneously, the fuel filler pipe lid that can discharge with the height pressure drop self-opening in the fuel tank.
Background technology
Known fuel lid is to have frenulum, rivet, enclosing cover, rubber seal, screw shell assembling to be formed by connecting.Fuel lid after the assembling is screwed in the fuel filler pipe oral area, utilize the leak tightness of rubber seal that fuel lid is screwed.But fuel lid is can not be fully to the fuel tank leak free, and the air pressure in the fuel tank should keep balance with barometric pressure, and fuel tank just can be kept the balance of expanding with heat and contract with cold like that.So in the time of environmental change, there are the uninterrupted problem of leaking of gasoline evaporation in fuel lid and barometric pressure intercommunication, and bring unsafe hidden danger like that.In order to prevent to occur because of the gasoline evaporation problem of leakage, Chinese patent 200620165617.X discloses a kind of antiseep fuel lid.Comprise enclosing cover and fuel lid body and base, between described base and fuel lid body, a chamber is arranged, there is axially extending bore to communicate on the described fuel lid body with described chamber, and this axially extending bore leads to outside the enclosing cover by the exhaust passage, the diaphragm vertical with the fuel lid body is housed in chamber, this diaphragm is radially less than the size of chamber and greater than through hole, and can form annular sealing surface at aperture periphery when being affixed to openings; There is axially extending bore to communicate on the described base and the described diaphragm of subtend with described chamber, have at least two boss to be used to support described diaphragm in bore periphery and make it can be this breather clogged, form between the boss with base on through hole and the air discharge duct that communicates of described chamber.Above-mentioned fuel lid can also guarantee that fuel tank communicates naturally with atmosphere in normal condition except that forming the good sealing when toppling over.Its deficiency is a complex structure, the productive costs height.
Summary of the invention
The utility model mainly is to solve the existing deficiency of prior art, thus develop a kind ofly can discharge with the variation self-opening of the positive negative pressure in the fuel tank simultaneously at leak free, fuel tank of vehicle fuel filler pipe lid simple in structure.
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals: a kind of fuel tank of vehicle fuel filler pipe lid, include enclosing cover, be provided with screw shell in the enclosing cover, on screw shell, be with rubber seal, it is characterized in that: negative pressure opening/closing device and malleation opening/closing device are installed in screw shell; Described negative pressure opening/closing device is by the negative pressure spring that is installed in the screw shell bottom, and the negative pressure spring cover that is sleeved on the negative pressure spring is formed with the rubber gasket that is installed in above the negative pressure spring cover; Described malleation opening/closing device is installed in the positive pressing spring on the positive pressing spring collet by the positive pressing spring collet that socket-connects with rubber gasket, and the malleation spring cover that is installed in above the positive pressing spring is formed, and described malleation spring cover is captiveed joint with screw shell; Described spring is a pressured state.
Therefore, the beneficial effects of the utility model are: can also change self-opening with oil-air pressure in the fuel tank and discharge the balance oil pressure when the sealing fuel tank prevent that fuel oil from leaking; It is simple in structure, and is reliable and practical.
Description of drawings
Accompanying drawing 1 is a kind of structural representation of the present utility model;
The specific embodiment
Below by embodiment also in conjunction with the accompanying drawings, the technical solution of the utility model is further described in detail.
Embodiment:
As the fuel lid of Fig. 1, be welded on the enclosing cover 3 after with ultrasonic welding rivet 2 being entangled frenulum 1, and in screw shell 6, assemble the negative pressure opening/closing device successively, promptly the negative pressure spring 11, negative pressure spring cover 10, rubber gasket 9; The malleation opening/closing device, promptly positive pressing spring collet 8, positive pressing spring 7, malleation spring cover 4 is lived screw shell with 4 welding of malleation spring cover, positive pressing spring collet 8 and 9 sockets of glue packing seal.At this moment, positive pressing spring and negative pressure spring all are that compression is stressed.Then both weldments are assembled mutually and finish, on screw shell, put rubber seal 5.In use, screw shell 6 screws oil pipe mouth and complete with rubber seal 5 sealings.When oil pipe internal gas pressure during greater than external atmosphere pressure, rubber gasket 9 is also opened in positive pressing spring 7 compressions, changes with the big or small malleation compression of spring amount of air pressure, and rubber gasket is opened thereupon; When intraductal atmospheric pressure during less than external atmosphere pressure, negative pressure spring cover 10 is also opened in 11 compressions of negative pressure spring, changes with the big or small negative pressure compression of spring amount of air pressure, and negative pressure spring cover 10 is opened thereupon.When interior extraneous air pressure balance, positive and negative pressing spring recovers to keep original state.
Claims (1)
1. a fuel tank of vehicle fuel filler pipe lid includes enclosing cover (3), is provided with screw shell (6) in the enclosing cover, is with rubber seal (5) on screw shell, it is characterized in that: negative pressure opening/closing device and malleation opening/closing device are installed in screw shell (6); Described negative pressure opening/closing device is by the negative pressure spring (11) that is installed in screw shell bottom, is sleeved on the negative pressure spring cover (10) on the negative pressure spring and is installed in rubber gasket (9) composition above the negative pressure spring cover; Described malleation opening/closing device is by the positive pressing spring collet (8) that socket-connects with rubber gasket (9), be installed in the positive pressing spring (7) on the positive pressing spring collet, the malleation spring cover (4) that is installed in above the positive pressing spring is formed, and described malleation spring cover is captiveed joint with screw shell; Described spring is a pressured state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820084440XU CN201201508Y (en) | 2008-03-27 | 2008-03-27 | Fuel filling pipe cap of automobile fuel tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820084440XU CN201201508Y (en) | 2008-03-27 | 2008-03-27 | Fuel filling pipe cap of automobile fuel tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201201508Y true CN201201508Y (en) | 2009-03-04 |
Family
ID=40423819
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820084440XU Expired - Lifetime CN201201508Y (en) | 2008-03-27 | 2008-03-27 | Fuel filling pipe cap of automobile fuel tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201201508Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830166A (en) * | 2009-03-09 | 2010-09-15 | 本田技研工业株式会社 | Vehicle |
| CN103104146A (en) * | 2013-02-18 | 2013-05-15 | 安徽江淮汽车股份有限公司 | Overrun clutch |
| CN103407367A (en) * | 2013-08-30 | 2013-11-27 | 成都陵川车用油箱有限公司 | Flexibly rotating oil tank cap |
| CN104175867A (en) * | 2013-05-28 | 2014-12-03 | 现代自动车株式会社 | Device for preventing fuel mixing in automobile |
-
2008
- 2008-03-27 CN CNU200820084440XU patent/CN201201508Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830166A (en) * | 2009-03-09 | 2010-09-15 | 本田技研工业株式会社 | Vehicle |
| CN103104146A (en) * | 2013-02-18 | 2013-05-15 | 安徽江淮汽车股份有限公司 | Overrun clutch |
| CN104175867A (en) * | 2013-05-28 | 2014-12-03 | 现代自动车株式会社 | Device for preventing fuel mixing in automobile |
| CN103407367A (en) * | 2013-08-30 | 2013-11-27 | 成都陵川车用油箱有限公司 | Flexibly rotating oil tank cap |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Ningbo Shunjiang Auto Parts Manufacturing Co., Ltd. Assignor: Jiang Zhiming Contract record no.: 2010330000680 Denomination of utility model: Fuel filling pipe cap of automobile fuel tank Granted publication date: 20090304 License type: Exclusive License Record date: 20100430 |
|
| CX01 | Expiry of patent term |
Granted publication date: 20090304 |
|
| CX01 | Expiry of patent term |