CN216895962U - Vehicle rollover valve - Google Patents
Vehicle rollover valve Download PDFInfo
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- CN216895962U CN216895962U CN202123282943.2U CN202123282943U CN216895962U CN 216895962 U CN216895962 U CN 216895962U CN 202123282943 U CN202123282943 U CN 202123282943U CN 216895962 U CN216895962 U CN 216895962U
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- shell
- valve
- valve core
- exhaust hole
- sealing sheet
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Abstract
The utility model discloses a vehicle rollover valve which comprises an upper cover, a valve plate, a retainer ring, a shell, a sealing sheet, a valve core, a spring and a bottom cover, wherein the valve plate is arranged on the upper cover; the upper cover is arranged at the top of the shell, a first exhaust hole is formed in the center of the top of the shell, the bottom of the first exhaust hole is of a plane structure, and the valve plate is arranged between the upper cover and the shell and moves up and down in the upper cover; the clamping ring is sleeved on the outer side of the shell; the bottom cover is arranged at the bottom of the shell, the valve core is arranged in the shell, the spring is arranged between the valve core and the bottom cover, and the spring is used for elastically pressing the valve core to the bottom of the first exhaust hole; a raised spherical structure is arranged in the center of the top of the valve core, the spherical structure is right opposite to the first exhaust hole, the sealing sheet is arranged above the spherical structure, and the top surface of the sealing sheet is of a planar structure; the valve core is movably connected with the sealing sheet through a buckle structure. This application gasket can be all the time with the parallel laminating of first exhaust hole when sealed, ensures it to the good shutoff of exhaust hole, and the technology is simplified, and is with low costs.
Description
Technical Field
The utility model relates to an automobile accessory, in particular to a rollover valve used in an automobile oil tank.
Background
The rollover valve is applied to an automobile fuel supply system and is arranged in a fuel pump flange plate in the automobile fuel supply system, so that the air pressure in an oil tank is kept at a certain value. In a high-temperature state, when the internal pressure of the oil tank is too high, the rollover valve discharges oil vapor into the carbon tank for storage, and when the internal pressure of the oil tank is too low in a high-speed running state of the automobile, air is supplemented, so that the oil tank does not shrink or shrink; in addition, when the automobile turns over in an accident, the inside of the turning valve is closed, and fuel oil in the oil tank is prevented from leaking.
In the prior art, a valve core of the rollover valve and a shell are generally sealed by a rubber diaphragm and a plastic plane, so that oil and steam are prevented from leaking. Because of the oil resistance of the rubber diaphragm, one diaphragm can not adapt to different types of fuel oil, and the sealing sheet can be unstable when working in an oil and gas environment for a long time; meanwhile, the valve core and the sealing sheet of the conventional rollover valve need to be welded by ultrasonic waves, so that the process is complex and the cost is high. Meanwhile, the requirement on the sealing surface between the shell and the valve plate is high, the production requirement of the shell and the valve plate is increased, when one of the shell and the valve plate has a problem, the performance requirement cannot meet the requirement, and the problem is difficult to find.
The current operating situation of the existing rollover valve is as follows: 1. airtightness: when the rollover valve is closed, the valve core and the shell are generally sealed by a rubber diaphragm and a plastic plane, so that oil and steam are prevented from leaking. 2. Performance: when gas passes through the shell, the valve plate overcomes the limit of the weight of the valve plate and the aperture of the shell to reach the required performance.
The existing rollover valve has the following defects in actual use:
influence of airtightness: influence of airtightness: the oil resistance of the rubber diaphragm can not enable one diaphragm to adapt to different types of fuel oil, and the sealing sheet can be unstable when working in an oil and gas environment for a long time;
(II) influence of fixation: the valve core and the sealing sheet of the existing rollover valve need to be welded by ultrasonic waves, so that the process is complex and the cost is high; meanwhile, the requirement on the sealing surface between the shell and the valve plate is high, the production requirement of the shell and the valve plate is increased, when one of the shell and the valve plate has a problem, the performance requirement cannot meet the requirement, and the problem is difficult to find.
Thus, the prior art rollover valve also has a place to lift.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems in the background art, the utility model aims to provide the rollover valve which has the advantages of simple structural design, good air tightness, longer service life, capability of effectively relaxing the requirement on assembly precision and reduction in manufacturing difficulty, so as to solve the problems in the prior art.
In order to achieve the purpose, the utility model relates to a vehicle rollover valve which is characterized by comprising an upper cover, a valve plate, a clamping ring, a shell, a sealing piece, a valve core, a spring and a bottom cover; the upper cover is arranged at the top of the shell, a first exhaust hole is formed in the center of the top of the shell, the bottom of the first exhaust hole is of a plane structure, and the valve plate is arranged between the upper cover and the shell and moves up and down in the upper cover; the clamping ring is sleeved on the outer side of the shell; the bottom cover is arranged at the bottom of the shell, the valve core is arranged in the shell, the spring is arranged between the valve core and the bottom cover, and the spring is used for elastically pressing the valve core to the bottom of the first exhaust hole; a raised spherical structure is arranged in the center of the top of the valve core, the spherical structure is right opposite to the first exhaust hole, the sealing sheet is arranged above the spherical structure, and the top surface of the sealing sheet is of a planar structure; the valve core is movably connected with the sealing sheet through a buckle structure; the buckling structure comprises at least one bending part arranged at one end of the sealing sheet, a clamping groove matched with the bending part is arranged on the side face of the top of the valve core, the bending part is buckled with the clamping groove, and a certain movable gap is formed between the bending part and the clamping groove.
Furthermore, the sealing piece is made of plastic materials in an integrated forming mode.
Furthermore, a second vent hole is formed in the valve plate; the number of the second vent holes is set to be a plurality of, and the second vent holes are circumferentially and uniformly distributed around the periphery of the valve plate.
Due to the adoption of the technical scheme, compared with the prior technical scheme, the utility model has the following advantages and positive effects:
firstly, the plastic sealing sheet is adopted, so that the factors influencing air tightness are changed into the hard sealing only made of plastic, and the sealing is simpler and more effective compared with the traditional rubber membrane sealing, and the air tightness of the product can be better controlled because the oil resistance and the high temperature resistance of the plastic sealing sheet relative to the rubber sealing sheet are better;
secondly, the plastic sealing sheet is adopted, so that the processing technology of the product is simpler, and the cost is reduced;
thirdly, the sealing surface area of the shell and the valve plate is smaller, the sealing sheet is arranged above the spherical structure, so that the sealing sheet can move in a certain range, the sealing requirement of the valve core sealing sheet mechanism at different angles can be met during working, the exhaust flow is controlled, the product performance is flexible,
the product performance can meet the requirement of a fuel system.
Of course, it is not necessary for any particular embodiment of the inventive concept to have all of the above technical effects at the same time.
Drawings
The above and other features and advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
FIG. 1 is an exploded schematic view of the present invention;
FIG. 2 is a perspective view of the present invention;
FIG. 3 is a perspective view of the valve cartridge of the present invention;
FIG. 4 is a perspective view of the snap structure of the present invention;
FIG. 5 is a perspective view of a sealing disc of the present invention;
FIG. 6 is a schematic diagram of the operation of the present invention;
FIG. 7 is a further operational schematic of the present invention;
fig. 8 is a schematic diagram of the tilt angle of the present invention.
Description of the symbols:
1: an upper cover; 2: a valve plate; 3: a collar; 4: a housing; 5: sealing the sheet; 51: a bent portion; 6: a valve core; 61: a spherical structure; 62: a card slot; 7: a spring; 8: a bottom cover.
Detailed Description
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only some embodiments of the present application, and not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without making any creative effort shall fall within the protection scope of the present application.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 and 2, an exploded schematic view and a perspective view of the present invention are shown, and the present invention discloses a vehicle rollover valve, which includes an upper cover 1, a valve plate 2, a collar 3, a housing 4, a sealing sheet 5, a valve core 6, a spring 7 and a bottom cover 8; referring to fig. 6, in the drawing, the upper cover 1 is connected to the top of the housing 4 in a clamping manner, and an accommodating space is formed after the upper cover 1 is clamped, which is not described again in the prior art, a first exhaust hole is arranged in the center of the top of the housing 4, the bottom of the first exhaust hole is of a planar structure, in fig. 6, the first exhaust hole includes a pipeline protruding in the axial direction, and the bottom of the pipeline, that is, an end portion facing the sealing sheet 5, is of a planar structure.
In addition, as shown in fig. 1 and fig. 6, the valve plate 2 is disposed in the accommodating space between the upper cover 1 and the housing 4, and moves up and down in the accommodating space, the valve plate 2 is provided with second vent holes, the number of the second vent holes is not limited, and the second vent holes are circumferentially and uniformly distributed around the periphery of the valve plate 2, in the embodiment of fig. 1, the number of the second vent holes is three, but cannot be used to limit the present application; the clamping ring 3 is sleeved on the outer side of the shell 4; the bottom cover 8 is arranged at the bottom of the shell 4, the valve core 6 is arranged in the shell 4, the spring 7 is arranged between the valve core 6 and the bottom cover 8, and the spring 7 is used for elastically pressing the valve core 6 to the bottom of the first exhaust hole; the center of the top of the valve core 6 is provided with a raised spherical structure 61, the spherical structure 61 is positioned below the first exhaust hole and is opposite to the first exhaust hole, the sealing sheet 5 is made of a hard plastic material, the sealing sheet 5 is arranged above the spherical structure 61, and the top surface of the sealing sheet is of a plane structure.
Referring to fig. 3, 4 and 5, which illustrate the structure of the snap structure of the present invention, the valve core 6 is movably connected with the sealing plate 5 through a snap structure; the fastening structure includes at least one bending portion 51 disposed at one end of the sealing piece 5, a locking groove 62 disposed on a side surface of a top of the valve element 6 and engaged with the bending portion 51, the bending portion 51 is engaged with the locking groove 62, referring to fig. 8, the bending portion 51 includes a right-angled bending body and a triangular hook body, after the bending portion 51 is engaged with the locking groove 62, the triangular hook body at an end of the bending portion 51 prevents the bending portion 51 from coming off from the locking groove 62, a gap exists between the bending portion 51 and the locking groove 62, so that the sealing piece 5 and the valve element 6 are movably connected, after the sealing piece 5 is fixed and sealed, the sealing piece 5 is supported by the spherical structure 61 protruding from a center of the valve element 6, as shown by three arrows in fig. 8, the valve element 6 swings at a certain angle, for example, 6 degrees, and does not generate a tilting motion to the sealing piece 5, the sealing sheet 5 is in a horizontal position during sealing, and sealing with the shell 4 is realized.
Other embodiments of this application, kink 51 can the bilateral symmetry set up in the gasket both sides equally, at this moment, 6 top sides of case need set up a pair of draw-in groove 62 rather than matcing, kink 51 can also be a plurality ofly, like three fork star structure, because kink and draw-in groove have certain clearance, adopt the structure can realize 5 fixed sealed backs of gasket are right 5 do not produce the removal tilting, guarantee gasket 5 with the good laminating of first air vent, and then ensure right the reliable seal of first air vent, and then realize 6 top of case spherical structure 61 can let gasket 5 can both finally be in horizontal position when sealed under any angle, realize with casing 4's better sealed.
The utility model has improved performance control, is easier to control in production, and has wider range and adaptability compared with the oil resistance of the existing rollover valve. The product parts have simple and practical structures, and the performance of the product can be better controlled while the cost is greatly reduced. These advantages all benefit from the elimination of the traditional rollover valve in the form of a rubber sealing sheet, but a plastic-to-plastic hard seal.
Referring to fig. 6 and 7, there are shown operational principle diagrams of the rollover valve of the present invention, which operate as follows: in the normal state of fig. 6, the valve element 6 is located in the lower part of the housing 4, and the sealing plate 5 rests on the top surface of the valve element 6; when the internal pressure of the oil tank is higher than the external pressure, oil gas is discharged through a gap between the valve core 6 and the shell 4, the first vent hole, a gap where the valve plate 2 rises and an opening on the upper cover 1 in sequence, and the rollover valve is in an exhaust state at the moment; in fig. 7, when the oil tank is inclined beyond a set angle or overturned, the valve core 6 is lifted, the sealing piece 5 blocks the lower end of the first vent hole, and the rollover valve is in an unvented and oil-tight state, because the center of the valve core 6 protrudes out of the spherical structure 61 to support the sealing piece 5, the valve core 6 swings at a certain angle, for example, 6 degrees, no movement and tilting are generated on the sealing piece 5, and the sealing piece 5 is in a horizontal position during sealing, so that sealing with the housing 4 is realized; when the oil tank returns to a normal state, the valve core 6 falls back and resets.
Due to the adoption of the technical scheme, compared with the prior technical scheme, the utility model has the following advantages and positive effects:
firstly, the plastic sealing sheet is adopted, so that the factors influencing air tightness are changed into hard sealing only by plastic, and the sealing is simpler and more effective compared with the traditional rubber diaphragm sealing, and the air tightness of the product can be better controlled because the oil resistance and the high temperature resistance of the plastic sealing sheet relative to the rubber sealing sheet are better;
secondly, the plastic sealing sheet is adopted, so that the processing technology of the product is simpler, and the cost is reduced;
thirdly, the sealing surface area of the shell and the valve plate is smaller, the sealing sheet is arranged above the spherical structure, so that the sealing sheet can move in a certain range, the sealing requirement of the valve core sealing sheet mechanism at different angles can be met during working, the exhaust flow is controlled, the product performance is flexible,
the product performance can meet the requirement of a fuel system.
It will be appreciated by those skilled in the art that the utility model can be embodied in many other specific forms without departing from the spirit or scope thereof. Although embodiments of the present invention have been described, it is to be understood that the present invention should not be limited to those precise embodiments, and that various changes and modifications can be effected therein by one skilled in the art without departing from the scope or spirit of the utility model as defined by the appended claims.
Claims (3)
1. A vehicle rollover valve is characterized by comprising an upper cover, a valve plate, a clamping ring, a shell, a sealing piece, a valve core, a spring and a bottom cover; the upper cover is arranged at the top of the shell, a first exhaust hole is formed in the center of the top of the shell, the bottom of the first exhaust hole is of a plane structure, and the valve plate is arranged between the upper cover and the shell and moves up and down in the upper cover; the clamping ring is sleeved on the outer side of the shell; the bottom cover is arranged at the bottom of the shell, the valve core is arranged in the shell, the spring is arranged between the valve core and the bottom cover, and the spring is used for elastically pressing the valve core to the bottom of the first exhaust hole;
a raised spherical structure is arranged in the center of the top of the valve core, the spherical structure is right opposite to the first exhaust hole, the sealing sheet is arranged above the spherical structure, and the top surface of the sealing sheet is of a planar structure;
the valve core is movably connected with the sealing sheet through a buckle structure;
the buckling structure comprises at least one bending part arranged at one end of the sealing sheet, a clamping groove matched with the bending part is arranged on the side face of the top of the valve core, the bending part is buckled with the clamping groove, and a certain movable gap is formed between the bending part and the clamping groove.
2. The rollover valve for vehicles according to claim 1, wherein the sealing plate is integrally formed of a plastic material.
3. The rollover valve for vehicles according to claim 1, wherein the valve plate is provided with a second vent hole; the number of the second vent holes is set to be a plurality of, and the second vent holes surround the periphery of the valve plate and are circumferentially and uniformly distributed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123282943.2U CN216895962U (en) | 2021-12-24 | 2021-12-24 | Vehicle rollover valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123282943.2U CN216895962U (en) | 2021-12-24 | 2021-12-24 | Vehicle rollover valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216895962U true CN216895962U (en) | 2022-07-05 |
Family
ID=82209029
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123282943.2U Active CN216895962U (en) | 2021-12-24 | 2021-12-24 | Vehicle rollover valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216895962U (en) |
-
2021
- 2021-12-24 CN CN202123282943.2U patent/CN216895962U/en active Active
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