CN206528336U - A kind of fuel tank cap - Google Patents
A kind of fuel tank cap Download PDFInfo
- Publication number
- CN206528336U CN206528336U CN201720176319.9U CN201720176319U CN206528336U CN 206528336 U CN206528336 U CN 206528336U CN 201720176319 U CN201720176319 U CN 201720176319U CN 206528336 U CN206528336 U CN 206528336U
- Authority
- CN
- China
- Prior art keywords
- fuel tank
- cavity
- valve element
- spring
- sealing gasket
- 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.)
- Withdrawn - After Issue
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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 fuel tank cap, the lower end of fuel tank cap is provided with thread segment, cavity is offered on thread segment, air-breather is provided with cavity, when the breather valve obstruction of fuel tank, the connection of fuel tank and ambient atmosphere can be controlled by air-breather, realize that the pressure between fuel tank and the external world is adjusted by air-breather, i.e. when tank pressure is higher than the design pressure of fuel tank, unnecessary pressure is outwards discharged by air-breather, when due to fluid taken away out of fuel tank cause tank pressure be less than ambient pressure when, by air-breather from the external world import air.The fuel tank cap that this programme is provided can realize that fuel tank keeps balancing with ambient pressure when breather valve is blocked, it is ensured that the security that fuel tank is used.
Description
Technical field
The utility model is related to automobile technical field, more particularly to a kind of fuel tank cap.
Background technology
Existing fuel tank cap is totally enclosed fuel tank cap, when breather valve is blocked, and fuel tank can not carry out gas friendship with the external world
Change, cause tank pressure to keep balancing with the external world.When tank pressure is reduced, easily cause fuel tank and inhaled flat, when
Fuel oil not smooth and potential safety hazard is caused during fuel tank expanded by heating.
Therefore, fuel tank keeps balancing with ambient pressure when how to realize breather valve closure, as those skilled in the art urgently
Technical problem to be solved.
Utility model content
In view of this, the utility model provides a kind of fuel tank cap, fuel tank and ambient pressure during realizing breather valve closure
Keep balance.
To achieve the above object, the utility model provides following technical scheme：
A kind of fuel tank cap, including block, the lower end of the block are provided with thread segment, and the thread segment is along its axis direction
Offer and be provided with cavity, the cavity for connecting fuel tank and extraneous air-breather, the upper end of the thread segment is opened up
There is the venthole of the cavity connection, the venthole is in communication with the outside.
It is preferred that, in above-mentioned fuel tank cap, the upper end of the cavity offers the first mounting hole, first mounting hole
Openend is provided with step-like neck, and the upper end size of the step-like neck is small compared with the lower end size of the step-like neck；
The air-breather includes：
Lower shrouding, the lower shrouding and the annular groove of the thread segment lower end are interference fitted, and are opened up on the lower shrouding
There is the air admission hole connected with fuel tank；
It is arranged in parallel with the lower shrouding for the sealing gasket for sealing the venthole, the sealing gasket and the cavity
Inwall gap coordinates, and the second mounting hole is offered on the sealing gasket；
Lower end is sealed with the air admission hole to be coordinated, the valve element that upper end coordinates with second mounting hole, under the valve element
End is provided with baffle plate, and first mounting hole is stretched into the upper end of the valve element；
The first spring of the valve element outer wall is set in, first lower spring end offsets with the baffle plate, upper end and institute
The lower surface for stating sealing gasket offsets；
It is set in the second spring of first spring outwards, the upper end of the second spring and the lower end of the sealing gasket
Face offsets, and lower end and the upper surface of the lower shrouding offset；
The shell fragment of the valve element upper end is set in, the side wall of the shell fragment extends to the cavity, the end of the shell fragment
The bending towards the valve element upper end is provided with, the bending is stretched into the step-like neck, the lower end of the bending and institute
State sealing gasket to offset, the upper end of the bending and the horizontal interior walls of the step-like neck offset.
It is preferred that, in above-mentioned fuel tank cap, the outer wall of the second spring is arranged with guide sleeve, the guide sleeve along institute
The length for stating axis direction of the length cavity of the axis direction of cavity along the cavity is short, the upper end of the guide sleeve
The pressing plate with the upper end cooperation of the second spring is provided with, the upper surface of the pressing plate is connected with the sealing gasket.
It is preferred that, in above-mentioned fuel tank cap, sealing ring is provided between the lower end of the valve element and the lower shrouding.
It can be seen from the above technical proposal that the fuel tank cap that the utility model is provided, the lower end of fuel tank cap is provided with screw thread
Offered on section, thread segment and air-breather is provided with cavity, cavity, when the breather valve obstruction of fuel tank, ventilation can be passed through
Device controls the connection of fuel tank and ambient atmosphere, realizes that the pressure between fuel tank and the external world is adjusted by air-breather, that is, works as oil
When pressure is higher than the design pressure of fuel tank in case, unnecessary pressure is outwards discharged by air-breather, when because fluid is from fuel tank
Inside take away cause tank pressure be less than ambient pressure when, by air-breather from the external world import air.The oil that this programme is provided
Case lid can realize that fuel tank keeps balancing with ambient pressure when breather valve is blocked, it is ensured that the security that fuel tank is used.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
The structural representation for the fuel tank cap that Fig. 1 provides for the utility model embodiment.
1st, block, 2, thread segment, 3, lower shrouding, 4, sealing gasket, 5, valve element, the 6, first spring, 7, second spring, 8, bullet
Piece.
Embodiment
The utility model discloses a kind of fuel tank cap, fuel tank keeps balancing with ambient pressure during realizing breather valve closure.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
Referring to Fig. 1, the structural representation for the fuel tank cap that Fig. 1 provides for the utility model embodiment.
The utility model discloses a kind of fuel tank cap, including block 1, the lower end of block 1 is provided with thread segment 2, thread segment 2
Connection for realizing fuel tank cap and reservoir port.When the screw thread of reservoir port is external screw thread, being designed as the screw thread of thread segment 2 is interior
Screw thread, when the screw thread of reservoir port is internal thread, the Design of Screw Thread of thread segment 2 is external screw thread.
This programme is provided with air-breather in fuel tank cap, and the company of fuel tank and ambient atmosphere can be realized by air-breather
It is logical, when the breather valve obstruction of fuel tank, it can realize that fuel tank is adjusted with extraneous pressure by air-breather.When the pressure in fuel tank
When power is more than the design pressure of fuel tank, air-breather is opened, and is outwardly discharged unnecessary pressure, is taken out when due to fluid out of fuel tank
When the pressure that walking causes to occur in fuel tank in negative pressure i.e. fuel tank is less than ambient pressure, air-breather is opened, from the external world into fuel tank
Import air.
Open up cavity in this programme in thread segment 2, the axis direction of cavity threadingly section 2 is opened up, i.e. cavity and screw thread
Section 2 is coaxially arranged, and air-breather is just arranged in the cavity.
, should in order to realize fuel tank with extraneous pressure communication, it is necessary to open up the venthole connected with cavity on thread segment 2
Venthole is also in communication with the outside, and extraneous pressure can enter cavity by venthole, then be entered by the air-breather of cavity
Fuel tank, and the gas in fuel tank can also enter cavity, then venthole is entered by air-breather, into the external world.
Air-breather includes in this programme：Lower shrouding 3, sealing gasket 4, valve element 5, the first spring 6, second spring 7 and shell fragment
8。
The structure of air-breather is followed successively by shell fragment 8, sealing gasket 4, valve element 5 and lower shrouding 3 from top to bottom, from outside to inside successively
For second spring 7, the first spring 6 and valve element 5.
Air-breather is coordinated by valve element 5 and sealing gasket 4 realizes fuel tank and extraneous connection.
The lower end of thread segment 2 offers annular groove, and lower shrouding 3 is interference fitted with the annular groove, it is preferred that this programme
In interference fit be interference fitted in the circumferential with annular groove for lower shrouding 3.
The oil gas in the air admission hole connected with fuel tank, fuel tank is offered on lower shrouding 3 to enter spiral shell by the air admission hole
The cavity of line section 2.
Sealing gasket 4 is arranged in parallel with lower shrouding 3, and the sealing gasket 4 can seal the venthole of thread segment 2, sealing gasket 4 and sky
The inwall gap of chamber coordinates, it is ensured that entering the oil gas of the cavity of thread segment 2 can be entered by the gap between sealing gasket 4 and cavity
Enter venthole, and then discharge fuel tank.
The second mounting hole is offered on sealing gasket 4, the second mounting hole and air admission hole are coaxially arranged.
Second mounting hole and air admission hole are that valve element 5 provides installation foundation.
The upper end of valve element 5 coordinates with the second mounting hole, and lower end coordinates with air admission hole, realizes the sealing to air admission hole.
The second mounting hole coordinates with the gap of valve element 5 in this programme so that entering the gas or oil gas of cavity can pass through
The gap of second mounting hole and valve element 5 is circulated, so as to realize the regulation of tank pressure.
The outer wall of valve element 5 is arranged with the first spring 6, and the lower end of the first spring 6 offsets with baffle plate, under upper end and sealing gasket 4
End face offsets；The outside of first spring 6 is cased with second spring 7, and the upper end and the lower surface of sealing gasket 4 of second spring 7 offset, lower end
Offseted with the upper surface of lower shrouding 3；The upper end of valve element 5 is arranged with shell fragment 8, and the side wall of shell fragment 8 extends to cavity from the first mounting hole,
The end of shell fragment 8 is provided with the bending towards the upper end of valve element 5, and bending is stretched into step-like neck, lower end and the sealing gasket 4 of bending
Offset, the upper end of bending and the horizontal interior walls of step-like neck offset.
When the pressure in fuel tank is higher than the design pressure of fuel tank, gas push valve element 5 is moved upwards, and valve element 5 can not be right
Air admission hole is sealed, and oil gas enters cavity by air admission hole, while valve element 5 can extrude the first spring 6, and promotes shell fragment 8
Upper end is moved upwards, and oil gas is discharged outside fuel tank by venthole, when the pressure in fuel tank is equal with the design pressure of fuel tank, the
One spring 6 and shell fragment 8 recover deformation, promote valve element 5 to move downward and air admission hole is sealed；
When the pressure in fuel tank is less than ambient pressure, gas promotes sealing gasket 4 to move downward by venthole, while close
Packing 4 extrudes second spring 7, and now sealing gasket 4 can not seal venthole, and venthole is connected with cavity, the lower end height of shell fragment 8
Decline, the first mounting hole extrusion elastic 8, make the lifting valve element 5 upwards of shell fragment 8, extrude the first spring 6, air admission hole is opened, extraneous gas
Body enters fuel tank, and when the pressure in fuel tank is equal with the design pressure of fuel tank, the first spring 6, second spring 7 and shell fragment 8 are extensive
Complex deformation, sealing gasket 4 continues to seal venthole.
Dotted line in figure is airintake direction, and solid line is outgassing direction, wherein only gives side in figure in order to represent clear
Air inlet or outlet during gas circulating direction.
In order to realize that the upper end of cavity in the installation of shell fragment 8, this programme offers the first mounting hole, the first mounting hole is opened
Mouth end is provided with step-like neck, and the upper end size of step-like neck is small compared with the lower end size of step-like neck, the lower end of shell fragment 8
Bending is stretched into step-like neck, it is ensured that the stable cooperation of shell fragment 8 and thread segment 2.
In order to improve the stability of device work, the outer wall of second spring 7 is arranged with guide sleeve, guide sleeve along cavity
Length of the length of axis direction compared with cavity along the axis direction of cavity is short, ensure that the compression height of second spring 7, realizes
The sealing of venthole and cavity and connect, the upper end of guide sleeve is provided with the pressing plate with the upper end cooperation of second spring 7, pressing plate
Upper surface is connected with sealing gasket 4.On the whole, guide sleeve is cylindrical tube guide sleeve, and one end of cylindrical tube passes through pressing plate for sealing.
In order to ensure the sealing effectiveness of valve element 5 and lower shrouding 3, sealing is provided between the lower end of valve element 5 and lower shrouding 3
Circle.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (4)
1. a kind of fuel tank cap, including block (1), the lower end of the block (1) are provided with thread segment (2), it is characterised in that described
Thread segment (2) offers the ventilation being provided with cavity, the cavity for controlling fuel tank to be in communication with the outside along its axis direction
Device, the upper end of the thread segment (2) offers the venthole of the cavity connection, and the venthole is in communication with the outside.
2. fuel tank cap according to claim 1, it is characterised in that the upper end of the cavity offers the first mounting hole, institute
The openend for stating the first mounting hole is provided with step-like neck, the upper end size step-like neck of the step-like neck
Lower end size it is small；
The air-breather includes：
Lower shrouding (3), the lower shrouding (3) and the annular groove of the thread segment (2) lower end are interference fitted, the lower shrouding
(3) air admission hole connected with fuel tank is offered on；
Be arranged in parallel with the lower shrouding (3) for the sealing gasket (4) for sealing the venthole, the sealing gasket (4) with it is described
The inwall gap of cavity coordinates, and the second mounting hole is offered on the sealing gasket (4)；
Lower end is sealed with the air admission hole to be coordinated, the valve element (5) that upper end coordinates with second mounting hole, the valve element (5)
Lower end is provided with baffle plate, and first mounting hole, second mounting hole and the valve element are stretched into the upper end of the valve element (5)
(5) gap coordinates；
First spring (6) of the valve element (5) outer wall is set in, the first spring (6) lower end offsets with the baffle plate, upper end
Offseted with the lower surface of the sealing gasket (4)；
It is set in the second spring (7) on the outside of first spring (6), upper end and the sealing gasket of the second spring (7)
(4) lower surface offsets, and lower end and the upper surface of the lower shrouding (3) offset；
The shell fragment (8) of the valve element (5) upper end is set in, the side wall of the shell fragment (8) extends to the cavity, the shell fragment
(8) end is provided with the bending towards the valve element (5) upper end, and the bending is stretched into the step-like neck, described curved
The lower end of folding offsets with the sealing gasket (4), and the upper end of the bending and the horizontal interior walls of the step-like neck offset.
3. fuel tank cap according to claim 2, it is characterised in that the outer wall of the second spring (7) is arranged with guide sleeve,
The length of axis direction of the length cavity of the axis direction along the cavity of the guide sleeve along the cavity is short,
The upper end of the guide sleeve is provided with the pressing plate with the upper end cooperation of the second spring (7), the upper surface of the pressing plate and institute
State sealing gasket (4) connection.
4. fuel tank cap according to claim 2, it is characterised in that the lower end of the valve element (5) and the lower shrouding (3) it
Between be provided with sealing ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720176319.9U CN206528336U (en) | 2017-02-24 | 2017-02-24 | A kind of fuel tank cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720176319.9U CN206528336U (en) | 2017-02-24 | 2017-02-24 | A kind of fuel tank cap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206528336U true CN206528336U (en) | 2017-09-29 |
Family
ID=59919542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720176319.9U Withdrawn - After Issue CN206528336U (en) | 2017-02-24 | 2017-02-24 | A kind of fuel tank cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206528336U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106585367A (en) * | 2017-02-24 | 2017-04-26 | 浙江春风动力股份有限公司 | Fuel tank cap |
| CN111572338A (en) * | 2020-05-20 | 2020-08-25 | 杭州人人集团有限公司 | Fuel tank sealing device |
-
2017
- 2017-02-24 CN CN201720176319.9U patent/CN206528336U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106585367A (en) * | 2017-02-24 | 2017-04-26 | 浙江春风动力股份有限公司 | Fuel tank cap |
| CN106585367B (en) * | 2017-02-24 | 2023-07-28 | 浙江春风动力股份有限公司 | Fuel tank cap |
| CN111572338A (en) * | 2020-05-20 | 2020-08-25 | 杭州人人集团有限公司 | Fuel tank sealing device |
| CN111572338B (en) * | 2020-05-20 | 2021-07-13 | 杭州人人集团有限公司 | Fuel tank sealing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170929 Effective date of abandoning: 20230728 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170929 Effective date of abandoning: 20230728 |
|
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |