CN221162208U - Automobile high-pressure plastic fuel tank with reinforced structure - Google Patents
Automobile high-pressure plastic fuel tank with reinforced structure Download PDFInfo
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- CN221162208U CN221162208U CN202322964378.0U CN202322964378U CN221162208U CN 221162208 U CN221162208 U CN 221162208U CN 202322964378 U CN202322964378 U CN 202322964378U CN 221162208 U CN221162208 U CN 221162208U
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- fuel tank
- reinforcement
- reinforcing
- nut
- pressure plastic
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- 239000002828 fuel tank Substances 0.000 title claims abstract description 66
- 229920003023 plastic Polymers 0.000 title claims abstract description 23
- 239000004033 plastic Substances 0.000 title claims abstract description 23
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 74
- 230000002787 reinforcement Effects 0.000 claims description 49
- 238000003466 welding Methods 0.000 claims description 17
- 210000003850 cellular structure Anatomy 0.000 claims description 2
- 239000003351 stiffener Substances 0.000 claims description 2
- 238000005728 strengthening Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 29
- 238000000034 method Methods 0.000 description 12
- 229920001903 high density polyethylene Polymers 0.000 description 9
- 230000006872 improvement Effects 0.000 description 9
- 239000004700 high-density polyethylene Substances 0.000 description 7
- 238000001746 injection moulding Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000003502 gasoline Substances 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005538 encapsulation Methods 0.000 description 3
- 229920006351 engineering plastic Polymers 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 208000035874 Excoriation Diseases 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010073 coating (rubber) Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)
Abstract
The invention relates to an automobile high-pressure plastic fuel tank with a reinforcing structure, which comprises a fuel tank body and a reinforcing piece arranged on the inner surface and/or the outer surface of the fuel tank body, wherein the reinforcing piece is fixedly connected with the fuel tank body in an assembling mode. According to the technical scheme, a new idea is provided, the reinforcing piece and the plastic oil tank are fixed in an assembling mode, so that the deformation of the oil tank under high pressure can be effectively restrained, and the technology is simple and easy to realize.
Description
Technical Field
The invention relates to a plastic fuel tank, in particular to an automobile high-pressure plastic fuel tank with a reinforced structure, and belongs to the technical field of high-pressure fuel systems.
Background
The high-pressure fuel tank is mainly applied to a fuel-electric hybrid electric vehicle, the fuel-electric hybrid electric vehicle runs for a long time by electric drive without using gasoline, and under the condition that no control measures are taken, the gasoline in the fuel tank can volatilize outwards along with the rise of the temperature of the external environment. However, the regulations require that the gasoline in the tank volatilize and not allow a significant amount to be vented to the atmosphere, so the tank must be closed by an isolation valve to ensure that volatilized oil vapors remain inside the tank. When the ambient temperature rises, gasoline volatilizes severely and oil vapor cannot be discharged from the oil tank, the pressure in the oil tank rises, and the surface of the oil tank deforms outwards under the action of the internal pressure. Such deformation occurs regardless of the material and structure of the tank. However, too large a deformation can lead to friction of the tank in contact with the peripheral parts, which leads to wear of the tank or parts, which is not allowed, so that solutions are necessary to control the deformation of the tank under high pressure conditions.
The current solution for high pressure plastic fuel tanks is: the deformation problem of the plastic fuel tank under high pressure is particularly obvious, and three main solutions for the deformation of the high-pressure plastic fuel tank in the market at present are: scheme 1. The oil tank itself is added with reinforcing structures to improve the strength and rigidity thereof, such as reinforcing ribs and Kiss-off structures, see FIG. 1; scheme 2. Adding reinforcement inside the tank to assist in increasing the strength and stiffness of the tank, such as built-in posts, see figure 2; scheme 3. The addition of reinforcement to the exterior of the tank assists in increasing the strength and stiffness of the tank, such as welded brackets, see figure 3.
When the scheme 1 is adopted to change the local structure of the oil tank to improve the rigidity and strength of the oil tank, if the reinforcing ribs are added, the strength improving effect is limited because the materials are unchanged and the wall thickness is not increased; if Kiss-off is increased, this works well but sacrifices a large tank volume. When the auxiliary reinforcing members are added to the inside and the outside of the fuel tank by adopting the schemes 2 and 3, the reinforcing members are fixed with the fuel tank by using welding, fusing or riveting processes, and the process is complex and has high requirements on equipment. Therefore, a new solution is urgently needed to solve the above technical problems.
Disclosure of Invention
The technical scheme provides a new idea for fixing the reinforcing piece and the plastic fuel tank in an assembling mode, so that the deformation of the fuel tank under high pressure can be effectively restrained, and the technology is simple and easy to realize.
In order to achieve the above purpose, the technical scheme of the invention is as follows, and the automobile high-pressure plastic fuel tank with the reinforcing structure is characterized by comprising a fuel tank body and reinforcing pieces arranged on the inner surface and/or the outer surface of the fuel tank body, wherein the reinforcing pieces are fixedly connected with the fuel tank body in an assembling mode.
As an improvement of the invention, the assembly mode is one or more of interference fit, snap fit and dovetail groove structure. The connecting mode of the assembly mode not only effectively inhibits the deformation of the oil tank, but also has the advantages of simple whole process, easy realization, convenient popularization and application and further reduction of production cost.
As an improvement of the present invention, at least one of the reinforcing members may be provided in one or more of the reinforcing members according to actual needs.
As an improvement of the invention, the reinforcement is abutted against the side face of the oil tank, and the reinforcement connecting the upper and lower surfaces is used for solving the side face deformation.
As an improvement of the present invention, in order to promote the reinforcement of the reinforcement itself, the main body portion of the reinforcement is provided in a honeycomb structure or a bar-like reinforcement structure.
As an improvement of the invention, the material of the reinforcement is a single thermoplastic or thermosetting high-strength engineering plastic, comprising one of PE, POM, PA; or a hybrid material such as hdpe+gf30 or the like; or may be a composite reinforcement.
As an improvement of the invention, when the reinforcing component is made of a plurality of materials, the structures of the plurality of materials are mutually crossed and/or the structures of the plurality of materials are adhered, welded and encapsulated, and/or the structures of the plurality of materials are mutually assembled, and/or the structures of the plurality of materials are mutually wrapped and/or the connecting surfaces of the plurality of materials are mutually connected after chemical reaction. Such as HDPE and metal fitting, HDPE and PA encapsulation, etc.
As an improvement of the invention, the plurality of reinforcing members are connected and fixed through an assembling mode or a welding mode, and the oil tank body is fixed between the reinforcing members, wherein one or more of the assembling mode is in interference fit, snap fit and dovetail groove structure.
As an improvement of the invention, the fuel tank further comprises a bracket, wherein the bracket is fixedly connected with the fuel tank body through welding or assembling, the reinforcing member is fixedly connected with the bracket through assembling, the assembling mode comprises but is not limited to bolt fixing, if bolt fixing is used, bolts or nuts are arranged on the bracket (the bolts and the nuts are put in the integral injection molding or the post-assembling bolt and the nuts are put in the integral injection molding), and nuts or bolts matched with the former are arranged on the reinforcing member (the nuts and the bolts are put in the integral injection molding or the post-assembling nut and the bolt are put in the integral injection molding). Thereby playing the role of reinforcing the oil tank.
As an improvement of the present invention, the reinforcement is provided on a strap or a clip, which is a structure for fixing the fuel tank to the vehicle body, by bolts or welding.
Compared with the prior art, the invention has the advantages that 1, the technical scheme effectively controls the deformation of the plastic fuel tank under the high pressure condition, and reduces the abrasion risk of the fuel tank and the vehicle body parts; 2. in the technical scheme, the connecting mode of the reinforcing piece and the oil tank is mainly assembled later, the structure is simple, and the process and the equipment are easier to realize.
Drawings
FIG. 1 is a schematic diagram of scheme 1 in the prior art;
FIG. 2 is a schematic diagram of scheme 2 in the prior art;
FIG. 3 is a schematic diagram of scheme 3 in the prior art;
FIG. 4 is a schematic view of the structure of the reinforcement member fixed to the outer surface of the fuel tank by means of assembly;
FIG. 5 is a schematic view showing the structure of the reinforcement member fixed to the inner surface of the fuel tank by means of assembly;
FIG. 6 is a schematic view of an interference fit arrangement for two or more sides of a reinforcement and a fuel tank;
FIG. 7 is a schematic view of a snap-fit arrangement of the reinforcement and one or more sides of the tank;
FIG. 8 is a schematic view of the assembly of the reinforcement member into the tank through the oil pump opening of the tank and the dovetail groove;
FIG. 9 is a schematic view of a reinforcement structure in a honeycomb or strip configuration;
FIG. 10 is a schematic illustration of a reinforcement structure employing two-material overmolded connections or two-material assembled connections;
FIG. 11 is a schematic view of the configuration of two stiffeners in use;
FIG. 12 is a schematic view of the structure of two reinforcing members fixedly arranged on the outer surface of the fuel tank through a snap connection;
FIG. 13 is a schematic view of the structure of two reinforcing members fixedly connected to each other through a dovetail groove on the outer surface of the oil tank;
FIG. 14 is a schematic view of the structure of the two reinforcing members fixedly arranged on the outer surface of the fuel tank through welding connection;
FIG. 15 is a schematic view showing the structure of the reinforcement member assembled by the bracket and fixedly connected with the fuel tank;
fig. 16 is a schematic view of the configuration of the reinforcement member disposed on the strap or clip edge.
In the figure: 1. the novel oil tank comprises an oil tank body, 2, a reinforcing part, 3, an oil tank outer surface, 4, an oil tank inner surface, 5, an interference structure, 6, a fastening structure of the reinforcing part, 7, a clamping groove structure of the oil tank, 8, a dovetail groove structure of the oil tank, 9, a dovetail groove matching structure of the reinforcing part, 10, an oil pump opening, 11, a two-material rubber coating connecting structure, 12, a two-material assembling connecting structure, 13, a welding connecting structure between the reinforcing parts, 14, a welding or assembling bracket, 15, a reinforcing rib, 16, a built-in upright post, 21, a honeycomb reinforcing rib structure, 22, a strip reinforcing rib structure, 23, a Kiss-off structure, 24, a binding belt or a clamping edge.
Detailed Description
In order to enhance the understanding of the present invention, the present embodiment will be described in detail with reference to the accompanying drawings.
Example 1: the utility model provides a take reinforced structure's car high pressure plastic fuel tank, the fuel tank includes oil tank body 1 and sets up the reinforcement 2 at oil tank body internal surface and/or surface, the reinforcement is through assembly type and oil tank body fixed connection, the assembly type is one or more in interference fit, snap fit, the dovetail structure, the quantity of reinforcement at least one, according to actual need, the reinforcement can set up one or more, the main part of reinforcement sets up to cellular structure or strip strengthening rib structure, in order to promote the strong of reinforcement itself, the material of reinforcement is single thermoplasticity or thermosetting high strength engineering plastics, includes one of PE, POM, PA; or a hybrid material such as hdpe+gf30 or the like; the reinforcing component can also be made of composite reinforcing materials, and when the reinforcing component is made of a plurality of materials, the structures of the plurality of materials are mutually crossed, and/or the structures of the plurality of materials are adhered, welded and encapsulated, and/or the structures of the plurality of materials are mutually assembled, and/or the structures of the plurality of materials are mutually wrapped, and/or the connecting surfaces of the plurality of materials are mutually connected after chemical reaction. For example, in the case of HDPE and metal assembly, HDPE and PA encapsulation, etc., as shown in fig. 10, a plurality of reinforcing members are fixedly connected by an assembly method or a welding method, the fuel tank body is fixed between the reinforcing members, and the fuel tank further comprises a bracket, wherein the bracket is fixedly connected with the fuel tank body by a welding method or an assembly method, and the reinforcing members are fixedly connected with the bracket by an assembly method, so that the fuel tank is reinforced.
Example 2: referring to fig. 4, a high-pressure plastic fuel tank with a reinforcing structure for an automobile comprises a fuel tank body 1 and a reinforcing member 2 arranged on the outer surface of the fuel tank body, referring to fig. 4, or the reinforcing member 2 is arranged on the inner surface of the fuel tank body 1, referring to fig. 5, and the reinforcing member 2 is fixedly connected with the fuel tank body 1 in an assembling manner. As can be seen from fig. 4, the side surface of the fuel tank is attached to the middle main body of the half i-shaped reinforcing member or a small gap is left between the side surface of the fuel tank and the middle main body of the half i-shaped reinforcing member, and the upper and lower parts of the half i-shaped reinforcing member are provided with protrusions matched with the grooves of the fuel tank or buckles matched with the clamping grooves of the fuel tank.
Example 3: referring to fig. 6-8, an automotive high pressure plastic fuel tank with reinforcement structure is provided wherein the reinforcement and the high pressure fuel tank are assembled in a manner that includes, but is not limited to, the following common manners:
Referring to fig. 6, the assembly method adopts an interference fit: the oil tank surface is designed with pits, the tail end of the reinforcing piece is designed with bulges, and pressure, supporting force and friction force are generated between the pits and the bulges after the pits and the bulges are assembled in place, so that the deformation of the oil tank is restrained, and two or more surfaces of the reinforcing piece and the oil tank are assembled and fixed by interference.
Referring to fig. 7, the assembly method employs a snap fit: the clamping groove is designed on the surface of the oil tank, the buckle is designed at the tail end of the reinforcing part, and pressure, tension and friction are generated between the two reinforcing parts after the two reinforcing parts are assembled in place, so that the deformation of the oil tank is restrained, and the reinforcing part can be assembled and fixed with one or more surfaces of the oil tank by adopting the buckle.
Referring to fig. 8, the assembly mode adopts a dovetail groove structure: the oil tank surface is designed to be similar to a dovetail groove structure, the reinforcing piece is designed to be corresponding to a matching structure, the reinforcing piece is scratched into the dovetail groove from the opening end of the dovetail groove during assembly, and pressure, supporting force and friction force are generated between the reinforcing piece and the dovetail groove after the reinforcing piece is assembled in place, so that the deformation of the oil tank is restrained. If the dovetail groove is designed on the inner surface of the oil tank, the reinforcing piece can be placed into the oil tank through the oil pump opening of the oil tank and then assembled with the dovetail groove. The remaining structure and advantages are the same as those of embodiment 2.
Example 4: referring to fig. 9, in order to enhance the strength of the reinforcing member, the main body portion thereof may be designed as honeycomb or strip-shaped reinforcing ribs, and the material of the reinforcing member may be a single thermoplastic or thermosetting high-strength engineering plastic, such as PE, POM, PA, etc.; or mixed materials such as HDPE+GF30; but may also be a composite reinforcement. When the reinforcing component is formed by a plurality of materials, the structures of the plurality of materials are arranged in a mutually crossing way and/or the structures of the plurality of materials are adhered, welded, encapsulated and/or assembled with each other and/or the structures of the plurality of materials are wrapped with each other and/or the connecting surfaces of the plurality of materials are connected with each other after chemical reaction. Such as HDPE and metal fitting, HDPE and PA encapsulation, etc., as shown in fig. 10.
Example 5: referring to fig. 9, the reinforcement is generally disposed and assembled at a position where the deformation of the fuel tank is large, one reinforcement may be disposed as in fig. 4 and 5, or two or more reinforcements may be disposed as in fig. 11, and different types of reinforcements may be used in combination; when two or more reinforcing members are adopted to be fixed on the outer surface of the oil tank, the reinforcing members and the reinforcing members can be connected and fixed, the oil tank is fixed between the reinforcing members, the connecting mode comprises assembly (a buckle, a dovetail groove and the like) and welding, fig. 12 is the connection of the reinforcing members through the buckle, fig. 13 is the connection of the reinforcing members through the dovetail groove, fig. 14 is the connection of the reinforcing members through the welding, fig. 15 is the connection and fixation of the welding or assembly bracket and the oil tank through the welding or assembly, and then the reinforcing members are fixed with the bracket through the assembly mode, so that the oil tank is enhanced. The assembly mode includes, but is not limited to, bolting on the bracket or bolting on the reinforcement, if bolting is used, bolting or nut on the bracket (bolt and nut are put in during integral injection molding or post-assembly bolt and nut), and nut or bolt matching with the former (such as nut and bolt are put in during integral injection molding or post-assembly nut and bolt) on the reinforcement, thereby playing the role of reinforcing the oil tank.
Example 6: referring to fig. 16, as another embodiment of the present invention, the reinforcement 2 is provided on a strap or a clip 24 by bolts or welding, the strap or the clip 24 being a structure for fixing the fuel tank to the vehicle body.
The mode effectively controls the deformation of the plastic fuel tank under the condition of high pressure, reduces the abrasion risk of the fuel tank and the vehicle body parts, and the connecting mode of the reinforcing piece and the fuel tank is mainly assembled, so that the structure is simple, and the process and the equipment are easier to realize.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and equivalent changes or substitutions made on the basis of the above-mentioned technical solutions fall within the scope of the present invention as defined in the claims.
Claims (7)
1. The utility model provides a take reinforced structure's car high pressure plastic fuel tank, its characterized in that, the fuel tank includes the oil tank body to and set up the reinforcement at oil tank body internal surface and/or surface, the reinforcement passes through assembly mode and oil tank body fixed connection, and the main part of reinforcement sets up to cellular structure or strip strengthening rib structure.
2. The automotive high pressure plastic fuel tank with reinforcement structure of claim 1, wherein the assembly is one or more of an interference fit, a snap fit, a dovetail configuration.
3. The automotive high pressure plastic fuel tank with reinforcement structure of claim 1, wherein at least one of the number of stiffeners.
4. The automotive high pressure plastic fuel tank with reinforcement structure of claim 1, wherein the reinforcement abuts against the side of the tank, connecting the upper and lower surface reinforcements for solving the side deformation.
5. The automotive high pressure plastic fuel tank with reinforcing structure according to claim 1 or 2, wherein a plurality of reinforcing members are fixedly connected by an assembling manner or a welding manner, wherein the assembling manner is one or more of a bolt-nut, an interference fit, a snap fit, a dovetail groove structure, and the fuel tank body is fixed between the reinforcing members.
6. The automotive high-pressure plastic fuel tank with a reinforcing structure according to claim 1 or 2, further comprising a bracket, wherein the bracket is fixedly connected with the fuel tank body by welding or assembling, the reinforcement is fixedly connected with the bracket by assembling, the assembling comprises bolting, if the bolting is used, the bolt or the nut is put into the bracket when the bolt or the nut is integrally injection-molded, and the reinforcement is provided with a nut or the bolt matched with the nut or the bolt when the nut or the post-assembling nut is integrally injection-molded, thereby playing the role of reinforcing the fuel tank.
7. An automotive high pressure plastic fuel tank with reinforcement structure as claimed in claim 1 or 2, wherein the reinforcement is provided on a strap or clip by bolts or welding, the strap or clip being a structure for securing the fuel tank to the vehicle body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322964378.0U CN221162208U (en) | 2023-11-02 | 2023-11-02 | Automobile high-pressure plastic fuel tank with reinforced structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322964378.0U CN221162208U (en) | 2023-11-02 | 2023-11-02 | Automobile high-pressure plastic fuel tank with reinforced structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221162208U true CN221162208U (en) | 2024-06-18 |
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ID=91538478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322964378.0U Active CN221162208U (en) | 2023-11-02 | 2023-11-02 | Automobile high-pressure plastic fuel tank with reinforced structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221162208U (en) |
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2023
- 2023-11-02 CN CN202322964378.0U patent/CN221162208U/en active Active
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