CN106585367A - Fuel tank cap - Google Patents
Fuel tank cap Download PDFInfo
- Publication number
- CN106585367A CN106585367A CN201710104415.7A CN201710104415A CN106585367A CN 106585367 A CN106585367 A CN 106585367A CN 201710104415 A CN201710104415 A CN 201710104415A CN 106585367 A CN106585367 A CN 106585367A
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
- B60K15/03—Fuel tanks
- B60K15/04—Tank inlets
- B60K15/0406—Filler caps for fuel tanks
Abstract
The invention discloses a fuel tank cap. A threaded section is arranged at the lower end of the fuel tank cap; a cavity is formed in the threaded section; a ventilation device is arranged in the cavity; when a vent valve of the fuel tank is blocked, the fuel tank can be controlled to be communicated with outside atmosphere by the ventilation device, and pressure regulation between the fuel tank and the outside is realized by the ventilation device, namely when the pressure in the fuel tank is higher than a design pressure of the fuel tank, excessive pressure is exhausted outwards by the ventilation device, and when oil is extracted from the fuel tank so as to make the pressure in the fuel tank be lower than the outside pressure, air is introduced from the outside by virtue of the ventilation device. According to the fuel tank cap provided by the scheme, a balance between the fuel tank pressure and the outside pressure can be maintained when the vent valve is blocked, and the using safety of the fuel tank is guaranteed.
Description
Technical field
The present invention relates 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, and when breather valve is blocked, fuel tank can not carry out gas friendship with the external world
Change, cause tank pressure to keep balance with extraneous.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 balance with ambient pressure when how to realize that breather valve is blocked, and becomes those skilled in the art urgently
Technical problem to be solved.
The content of the invention
In view of this, the invention provides a kind of fuel tank cap, kept with ambient pressure with fuel tank when realizing that breather valve is blocked
Balance.
For achieving the above object, the present invention provides following technical scheme：
A kind of fuel tank cap, including block, the lower end of the block is provided with thread segment, and the thread segment is along its axis direction
Cavity is offered, the air-breather for connecting fuel tank and the external world is provided with the cavity, the upper end of the thread segment opens up
There is the venthole of the cavity connection, the venthole is in communication with the outside.
Preferably, in above-mentioned fuel tank cap, the upper end of the cavity offers the first installing hole, first installing hole
Openend is provided with step-like draw-in groove, and the upper end size of the step-like draw-in groove is little compared with the lower end size of the step-like draw-in groove；
The air-breather includes：
Lower shrouding, the lower shrouding and the annular groove interference fit of the thread segment lower end, open up on the lower shrouding
There is the air admission hole connected with fuel tank；
It is arranged in parallel for the sealing gasket for sealing the venthole, the sealing gasket and the cavity with the lower shrouding
Inwall gap coordinates, and the second installing hole is offered on the sealing gasket；
Lower end coordinates with air admission hole sealing, the valve element that upper end coordinates with second installing hole, under the valve element
End is provided with baffle plate, and first installing hole is stretched in 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 lower end of the upper end of the second spring and the sealing gasket
Face offsets, and lower end offsets with the upper surface of the lower shrouding；
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 in the step-like draw-in groove, the lower end of the bending and institute
State sealing gasket to offset, the upper end of the bending offsets with the horizontal interior walls of the step-like draw-in groove.
Preferably, in above-mentioned fuel tank cap, the outer wall of the second spring is arranged with fairlead, the fairlead along institute
The length cavity for stating the axis direction of cavity is short along the length of the axis direction of the cavity, the upper end of the fairlead
The pressing plate coordinated with the upper end of the second spring is provided with, the upper surface of the pressing plate is connected with the sealing gasket.
Preferably, in above-mentioned fuel tank cap, between the lower end of the valve element and the lower shrouding sealing ring is provided with.
From above-mentioned technical proposal as can be seen that the fuel tank cap of present invention offer, the lower end of fuel tank cap is provided with thread segment, spiral shell
Cavity is offered in line section, air-breather is provided with cavity, when the breather valve of fuel tank blocks, air-breather control can be passed through
Liquefaction case and the connection of ambient atmosphere, realize that the pressure between fuel tank and the external world is adjusted by air-breather, i.e., when fuel tank internal pressure
Power higher than fuel tank design pressure when, unnecessary pressure is outwards discharged by air-breather, when taking away from fuel tank due to fluid
When causing tank pressure to be less than ambient pressure, air is imported from extraneous by air-breather.The fuel tank cap energy that this programme is provided
Fuel tank keeps balance with ambient pressure when enough realizing that breather valve is blocked, it is ensured that the security that fuel tank is used.
Description of the drawings
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description is briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of fuel tank cap provided in an embodiment of the present invention.
1st, block, 2, thread segment, 3, lower shrouding, 4, sealing gasket, 5, valve element, the 6, first spring, 7, second spring, 8, bullet
Piece.
Specific embodiment
The invention discloses a kind of fuel tank cap, to realize that fuel tank keeps balance with ambient pressure during breather valve closure.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than the embodiment of whole.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Fig. 1 is referred to, Fig. 1 is the structural representation of fuel tank cap provided in an embodiment of the present invention.
The invention discloses a kind of fuel tank cap, including block 1, the lower end of block 1 is provided with thread segment 2, and thread segment 2 is used for
Realize the connection of fuel tank cap and reservoir port.When the screw thread of reservoir port is external screw thread, the screw thread of thread segment 2 is designed as interior spiral shell
Line, 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 by air-breather the company of fuel tank and ambient atmosphere can be realized
It is logical, when the breather valve of fuel tank blocks, can realize that fuel tank is adjusted with the pressure in the external world by air-breather.When the pressure in fuel tank
Power more than fuel tank design pressure when, air-breather is opened, and outwardly discharges unnecessary pressure, when being taken out from fuel tank due to fluid
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 to fuel tank in
Import air.
Open up cavity in this programme in the 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.
In order to realize the pressure communication of fuel tank and the external world, needs open up the venthole connected with cavity on thread segment 2, should
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 from top to bottom shell fragment 8, sealing gasket 4, valve element 5 and lower shrouding 3, from outside to inside successively
For second spring 7, the first spring 6 and valve element 5.
Air-breather coordinates the connection for realizing fuel tank and the external world by valve element 5 with sealing gasket 4.
The lower end of thread segment 2 offers annular groove, lower shrouding 3 and the annular groove interference fit, it is preferred that this programme
In interference fit be lower shrouding 3 and annular groove interference fit in the circumferential.
The air admission hole connected with fuel tank is offered on lower shrouding 3, the oil gas in fuel tank can 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 in chamber coordinates, it is ensured that the oil gas into 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 installing hole is offered on sealing gasket 4, the second installing hole is coaxially arranged with air admission hole.
Second installing hole and air admission hole are that valve element 5 provides installation foundation.
The upper end of valve element 5 coordinates with the second installing hole, and lower end coordinates with air admission hole, realizes the sealing to air admission hole.
The second installing hole coordinates with the gap of valve element 5 in this programme so that the gas or oil gas into cavity can pass through
Second installing hole circulates with the gap of valve element 5, 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 upper end and the lower surface of sealing gasket 4 of second spring 7 offset, lower end
Offset 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 installing hole,
The end of shell fragment 8 is provided with the bending towards the upper end of valve element 5, and bending is stretched in step-like draw-in groove, lower end and the sealing gasket 4 of bending
Offset, the upper end of bending offsets with the horizontal interior walls of step-like draw-in groove.
When design pressure of the pressure in fuel tank higher than 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 installing hole extrusion elastic 8, make shell fragment 8 lift valve element 5 upwards, 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 to represent clear in figure
Air inlet or outlet during gas circulating direction.
In order to realize the installation of shell fragment 8, the upper end of cavity offers the first installing hole in this programme, and the first installing hole is opened
Mouth end is provided with step-like draw-in groove, and the upper end size of step-like draw-in groove is little compared with the lower end size of step-like draw-in groove, the lower end of shell fragment 8
Bending is stretched in step-like draw-in groove, 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 fairlead, fairlead along cavity
The length of axis direction is short along the length of the axis direction of cavity compared with cavity, ensure that the compression height of second spring 7, realizes
The sealing of venthole and cavity and connect, the upper end of fairlead is provided with the pressing plate coordinated with the upper end of second spring 7, pressing plate
Upper surface is connected with sealing gasket 4.On the whole, fairlead is cylindrical tube fairlead, 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, between the lower end of valve element 5 and lower shrouding 3 sealing is provided with
Circle.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.
Various modifications to these embodiments will be apparent for those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention
The embodiments shown herein is not intended to be limited to, and is to fit to and principles disclosed herein and features of novelty phase one
The most wide scope for causing.
Claims (4)
1. a kind of fuel tank cap, including block (1), the lower end of the block (1) is provided with thread segment (2), it is characterised in that described
Thread segment (2) offers cavity along its axis direction, is provided with the cavity for controlling the ventilation that fuel tank is in communication with the outside
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 installing hole, institute
The openend for stating the first installing hole is provided with step-like draw-in groove, the upper end size step-like draw-in groove of the step-like draw-in groove
Lower end size it is little；
The air-breather includes：
Lower shrouding (3), the annular groove interference fit of the lower shrouding (3) and the thread segment (2) lower end, the lower shrouding
(3) air admission hole connected with fuel tank is offered on；
Be arranged in parallel for the sealing gasket (4) for sealing the venthole with the lower shrouding (3), the sealing gasket (4) with it is described
The inwall gap of cavity coordinates, and on the sealing gasket (4) the second installing hole is offered；
Lower end coordinates with air admission hole sealing, the valve element (5) that upper end coordinates with second installing hole, the valve element (5)
Lower end is provided with baffle plate, and first installing hole, second installing hole and the valve element are stretched in 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
Offset with the lower surface of the sealing gasket (4)；
The second spring (7) being set on the outside of first spring (6), the upper end of the second spring (7) and the sealing gasket
(4) lower surface offsets, and lower end offsets with the upper surface of the lower shrouding (3)；
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 in the step-like draw-in groove, described curved
The lower end of folding offsets with the sealing gasket (4), and the upper end of the bending offsets with the horizontal interior walls of the step-like draw-in groove.
3. fuel tank cap according to claim 2, it is characterised in that the outer wall of the second spring (7) is arranged with fairlead,
The length cavity of the axis direction along the cavity of the fairlead is short along the length of the axis direction of the cavity,
The upper end of the fairlead is provided with the pressing plate coordinated with the upper end 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 |
|---|---|---|---|
| CN201710104415.7A CN106585367B (en) | 2017-02-24 | 2017-02-24 | Fuel tank cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710104415.7A CN106585367B (en) | 2017-02-24 | 2017-02-24 | Fuel tank cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106585367A true CN106585367A (en) | 2017-04-26 |
| CN106585367B CN106585367B (en) | 2023-07-28 |
Family
ID=58587915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710104415.7A Active CN106585367B (en) | 2017-02-24 | 2017-02-24 | Fuel tank cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106585367B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107223543A (en) * | 2017-08-07 | 2017-10-03 | 许昌远方工贸有限公司 | A kind of self-propelled dry land transplanting water tank |
| CN109094358A (en) * | 2018-07-21 | 2018-12-28 | 邓华明 | The leakage of lubricator positive pressure and negative pressure compensating device |
| CN114483395A (en) * | 2022-01-29 | 2022-05-13 | 浙江康思特动力机械有限公司 | Fuel tank cap and fuel tank |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1580436A (en) * | 1976-06-09 | 1980-12-03 | Auto Security Prod | Closure caps |
| US4716920A (en) * | 1987-01-08 | 1988-01-05 | Stant Inc. | Roll over fuel cap |
| CN200967411Y (en) * | 2006-11-17 | 2007-10-31 | 中国一拖集团有限公司 | Oil box cover for tractors |
| CN201736800U (en) * | 2010-07-11 | 2011-02-09 | 山东招远芳舒塑胶有限公司 | Fuel tank cap |
| CN201923454U (en) * | 2010-12-31 | 2011-08-10 | 苏州百胜动力机器有限公司 | Pressure adjustable fuel tank cap |
| 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 |
| CN104074646A (en) * | 2014-07-10 | 2014-10-01 | 宁波利凯特环保科技有限公司 | Ventilation-type leakage-resistant oil tank cap and oil tank with same |
| CN206528336U (en) * | 2017-02-24 | 2017-09-29 | 浙江春风动力股份有限公司 | A kind of fuel tank cap |
-
2017
- 2017-02-24 CN CN201710104415.7A patent/CN106585367B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1580436A (en) * | 1976-06-09 | 1980-12-03 | Auto Security Prod | Closure caps |
| US4716920A (en) * | 1987-01-08 | 1988-01-05 | Stant Inc. | Roll over fuel cap |
| CN200967411Y (en) * | 2006-11-17 | 2007-10-31 | 中国一拖集团有限公司 | Oil box cover for tractors |
| CN201736800U (en) * | 2010-07-11 | 2011-02-09 | 山东招远芳舒塑胶有限公司 | Fuel tank cap |
| CN201923454U (en) * | 2010-12-31 | 2011-08-10 | 苏州百胜动力机器有限公司 | Pressure adjustable fuel tank cap |
| 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 |
| CN104074646A (en) * | 2014-07-10 | 2014-10-01 | 宁波利凯特环保科技有限公司 | Ventilation-type leakage-resistant oil tank cap and oil tank with same |
| CN206528336U (en) * | 2017-02-24 | 2017-09-29 | 浙江春风动力股份有限公司 | A kind of fuel tank cap |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107223543A (en) * | 2017-08-07 | 2017-10-03 | 许昌远方工贸有限公司 | A kind of self-propelled dry land transplanting water tank |
| CN109094358A (en) * | 2018-07-21 | 2018-12-28 | 邓华明 | The leakage of lubricator positive pressure and negative pressure compensating device |
| CN114483395A (en) * | 2022-01-29 | 2022-05-13 | 浙江康思特动力机械有限公司 | Fuel tank cap and fuel tank |
| CN114483395B (en) * | 2022-01-29 | 2022-12-06 | 浙江康思特动力机械有限公司 | Fuel tank cap and fuel tank |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106585367B (en) | 2023-07-28 |
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