Reinforcing structure for plastic fuel tank

Abstract

The utility model relates to the technical field of plastic fuel tanks, and provides a reinforcing structure for a plastic fuel tank, which comprises a supporting column main body and a connecting flange used for being connected with two ends of the supporting column main body, and the two ends of the supporting column main body are provided with an annular fixing part and an axial fixing part. The two connecting flanges wrap the annular fixing part and the axial fixing part at the two ends of the supporting column body and are used for being connected with the supporting column body, and the connecting flanges and the annular fixing part correspondingly form special-shaped wings. By means of the technical scheme, the problems that in the prior art, a supporting column in a traditional fuel tank is insufficient in strength and prone to breakage are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plastic fuel tanks, and specifically, to a reinforcing structure for a plastic fuel tank. Background Art

[0002] A fuel tank, a container for storing fuel on an airplane or an automobile, is a special container for storing hydraulic oil or hydraulic fluid in a hydraulic system. Fuel tanks can be divided into two types: open fuel tanks and closed fuel tanks. For a plug-in hybrid fuel vehicle, when driving in pure electric mode, since the vehicle engine does not work and cannot desorb and clean the carbon canister, the carbon canister vapor content remains oversaturated for a long time, and there is a risk of carbon canister failure. Therefore, a high-pressure environment is required inside the fuel system to reduce the total amount of fuel vapor discharged to the carbon canister. Thus, support columns need to be added inside the traditional fuel tank to meet the rigidity of the fuel tank. Also, because there is a certain oil pressure inside the fuel tank, the strength of the support columns determines the strength of the fuel tank. Therefore, how to effectively increase the strength of the support columns is a major problem in this industry. Summary of the Utility Model

[0003] The utility model provides a reinforcing structure for a plastic fuel tank, which solves the problem that the internal support columns of the traditional fuel tank in the related art have insufficient strength and are prone to breakage.

[0004] The technical solution of the utility model is as follows:

[0005] A reinforcing structure for a plastic fuel tank includes a support column main body and connection flanges for connecting to both ends of the support column main body. Both ends of the support column main body have an annular fixing part and an axial fixing part. The two connection flanges wrap the annular fixing part and the axial fixing part at both ends of the support column main body for connecting to the support column main body, and the connection flanges and the annular fixing part form special-shaped wings correspondingly.

[0006] Further, one end of the connection flange away from the support column main body has an adhesive part, and the adhesive part has a number of uniformly distributed protrusions. The adhesive part is used for connecting to the inner wall of the fuel tank.

[0007] Further, the support column main body has an installation opening, and the installation opening is used for installing a pipe clamp or a wave baffle.

[0008] Further, the support column main body and the connection flange are provided with a through hole along the central axis. The inner wall of the support column main body at the through hole has a number of reinforcing ribs, and the reinforcing ribs are arranged along the inner wall of the through hole.

[0009] Further, the connection flange has a number of exhaust holes, and the exhaust holes are located on the adhesive part. The exhaust holes are used for connecting the inner wall of the fuel tank and the interior of the fuel tank.

[0010] Furthermore, the interior of the support column body is hollow, and the interior of the support column body also has an upper inner annular groove and a lower inner annular groove, which are located on both sides of the outer annular groove in the vertical direction; an upper support column and a lower support column are also included. Both ends of the upper support column are located in the upper inner annular groove, and both ends of the lower support column are located in the lower inner annular groove.

[0011] Furthermore, a vertical support column is also included, and both ends of the vertical support column are respectively connected to the upper support column and the lower support column.

[0012] The working principle and beneficial effects of the present utility model are as follows:

[0013] In the present utility model, in order to solve the above technical problems, a reinforcing structure for a plastic fuel tank is proposed, which includes a support column body and connecting flanges for connecting to both ends of the support column body. Both ends of the support column body have an annular fixing portion and an axial fixing portion. The two connecting flanges wrap around the annular fixing portion and the axial fixing portion at both ends of the support column body for connecting to the support column body, and the connecting flange and the annular fixing portion form a dissimilar fin.

[0014] During operation, when processing the support column body and the connecting flange, first form the support column body, and then the connecting flange is injection-molded or two-color injection-molded and built into the fuel tank during the production process of the fuel tank to ensure the strength of the fuel tank.

[0015] Beneficial effects:. An annular fixing portion and an axial fixing portion are provided, and the connecting flange is injection-molded at both ends of the support column body, so that the connecting flange can wrap around the annular fixing portion and the axial fixing portion, forming a dissimilar fin on the outside of the support column body, thereby improving the strength of the support column inside the fuel tank and ensuring the strength of the fuel tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following will further illustrate the above characteristics, technical features, advantages and their implementation manners of the present utility model in a clear and understandable manner in combination with the drawings showing the preferred embodiments.

[0017] Figure 1 is a schematic structural diagram of the present utility model;

[0018] Figure 2 is a schematic top view structural diagram of the present utility model;

[0019] Figure 3 is the present utility model Figure 2 Schematic cross-sectional structure diagram of A-A in;

[0020] Figure 4 is a schematic structural diagram of the pipe clamp installed in the present utility model;

[0021] In the figure: 1. Support column main body; 2. Connecting flange; 3. Annular fixing part; 4. Outer annular groove; 5. Bonding part; 6. Protrusion; 8. Through hole; 9. Reinforcing rib; 10. Exhaust hole; 11. Upper inner annular groove; 12. Lower inner annular groove; 13. Upper support column; 14. Lower support column; 15. Vertical support column; 16. Axial fixing part; 17. Installation opening; 18. Special-shaped fin; 19. Pipe clamp. Detailed implementation mode

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the specific implementation modes of the present invention will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained according to these drawings, and other implementation modes can also be obtained.

[0023] To make the drawings concise, only the parts related to the utility model are schematically shown in each drawing, and they do not represent the actual structure of the product. In addition, for the convenience of understanding and to make the drawings concise, in some drawings, components with the same structure or function are only schematically shown for one of them, or only one of them is marked. In this article, "one" not only means "only this one", but also means "more than one" situation, and "several" includes "two" and "more than two".

[0024] In this article, it should be noted that unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0025] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0026] Embodiment 1

[0027] Refer to Figures 1 to 4, which is the first embodiment of the present utility model, proposes a strengthening structure for a plastic fuel tank, including a support column main body 1 and connection flanges 2 for connecting to both ends of the support column main body 1. Both ends of the support column main body 1 have an annular fixing portion 3 and an axial fixing portion 16. The two connection flanges 2 wrap the annular fixing portion 3 and the axial fixing portion 16 at both ends of the support column main body for connection to the support column main body 1, and the connection flanges 2 and the annular fixing portion 3 form a special-shaped fin correspondingly.

[0028] In this embodiment, to solve the above technical problems, a strengthening structure for a plastic fuel tank is proposed, including a support column main body 1 and connection flanges 2 for connecting to both ends of the support column main body 1. Both ends of the support column main body 1 have an annular fixing portion 3 and an axial fixing portion 16. The two connection flanges 2 wrap the annular fixing portion 3 and the axial fixing portion 16 at both ends of the support column main body 1 for connection to the support column main body 1, and the connection flanges 2 and the annular fixing portion 3 form a special-shaped fin 18 correspondingly.

[0029] During operation, when processing the support column main body 1 and the connection flanges 2, first form the support column main body 1, and then the connection flanges 2 are formed by injection molding or two-color injection molding and are built into the fuel tank during the production process of the fuel tank to ensure the strength of the fuel tank.

[0030] The annular fixing portion 3 and the axial fixing portion 16 are provided, and the connection flanges 2 are injection-molded at both ends of the support column main body 1, so that the connection flanges 2 can wrap around the annular fixing portion 3 and the axial fixing portion 16, and a special-shaped fin 18 is formed on the outside of the support column main body 1, thereby improving the strength of the support column main body 1 inside the fuel tank and ensuring the strength of the fuel tank.

[0031] Embodiment 2

[0032] Compared with Embodiment 1, further, the support column main body 1 is columnar and has a V-shaped surface structure formed by inward depression in the middle section, and the middle part of the support column main body 1 has an outer annular groove 4.

[0033] In this embodiment, by setting the V-shaped surface structure and the outer annular groove 4, when the pressure in the fuel tank is too high, the support column main body 1 will break from the middle instead of breaking from both ends of the support column main body 1. Breaking from the connection flanges 2 at both ends of the support column may cause the fuel tank to rupture, resulting in problems such as oil leakage.

[0034] Embodiment 3

[0035] Compared with Embodiments 1-2, further, one end of the connection flange 2 away from the support column main body 1 has an adhesive portion 5. The adhesive portion 5 has a number of uniformly distributed protrusions 6, and the adhesive portion 5 is used for connecting to the inner wall of the fuel tank.

[0036] In this embodiment, the bonding portion 5 is used to be installed at the inner wall of the fuel tank. A plurality of protrusions 6 are provided on the bonding portion 5, which can increase the contact area with the inner wall of the fuel tank. During the process of inserting the support column main body 1 into the fuel tank, it melts and is integrated with the inner wall of the fuel tank to ensure the connection strength between the support column main body 1 and the fuel tank.

[0037] Embodiment 4

[0038] Compared with Embodiments 1-3, further, the support column main body 1 has an installation opening 17, and the installation opening 17 is used to install a pipe clamp 19 or a wave baffle.

[0039] In this embodiment, the installation opening 17 can be used to install a pipe clamp 19 or a wave baffle. A pipe clamp is added to the support column body to fix the internal pipeline, such as Figure 4 As shown, it is the structure for installing the pipe clamp 19; adding a wave baffle reduces the noise of oil fluid sloshing.

[0040] Embodiment 5

[0041] Compared with Embodiments 1-4, further, the support column main body 1 and the connection flange 2 are formed with a through hole 8 along the central axis. The inner wall of the support column main body 1 at the through hole 8 has a plurality of reinforcing ribs 9, and the reinforcing ribs 9 are arranged along the inner wall of the through hole 8. The connection flange 2 has a plurality of exhaust holes 10, and the exhaust holes 10 are located on the bonding portion 5. The exhaust holes 10 are used to communicate the inner wall of the fuel tank and the inside of the fuel tank.

[0042] In this embodiment, on the one hand, the through hole 8 can reduce the material used for the fuel tank support rod main body and reduce the overall weight of the fuel tank support rod main body; on the other hand, it can also cooperate with the protrusions 6 on the inner wall of the fuel tank through the through hole 8, so that the fuel tank support rod main body is not easily displaced after installation, and the stability is greatly improved. The exhaust holes 10 ensure that the internal and external pressures of the support column main body 1 are the same during the process of installing the support column main body 1 in the fuel tank, and increase the stability of the support column main body 1.

[0043] Embodiment 6

[0044] Compared with Embodiment 5, further,

[0045] The support column main body 1 is hollow inside, and the support column main body 1 also has an upper inner annular groove 11 and a lower inner annular groove 12. The upper inner annular groove 11 and the lower inner annular groove 12 are located on both sides of the outer annular groove 4 in the vertical direction; it also includes an upper support column 13 and a lower support column 14. Both ends of the upper support column 13 are located in the upper inner annular groove 11, and both ends of the lower support column 14 are located in the lower inner annular groove 12.

[0046] It further includes a vertical support column 15, and two ends of the vertical support column 15 are respectively connected to the upper support column 13 and the lower support column 14.

[0047] In this embodiment, an upper inner annular groove 11 and a lower inner annular groove 12 are provided inside the support column main body 1, the upper support column 13 is installed in the upper inner annular groove 11, and the lower support column 14 is installed in the lower inner annular groove 12, which can increase the strength of the support column main body 1. Since the connecting flange 2 is welded to the inner wall of the fuel tank, the connection method of the upper support column 13 and the lower support column 14 has higher strength than the welding connection method. Therefore, increasing the strength of the support column main body 1 to a certain extent can make the support column main body 1 more stable, and the connecting flange 2 will break first due to excessive fuel tank pressure. The vertical support seat is provided to connect the upper support column 13 and the lower support column 14 to make the support column main body 1 more stable.

[0048] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered by the scope of the claims of the present invention.

Claims

1. A reinforcement structure for a plastic fuel tank, comprising a support column body (1) and connecting flanges (2) for connecting to both ends of the support column body (1), characterized in that: The two ends of the support column body (1) are provided with an annular fixing portion (3) and an axial fixing portion (16); the two connecting flanges (2) wrap around the annular fixing portion (3) and the axial fixing portion (16) at the two ends of the support column body (1) for connection with the support column body (1); the connecting flanges (2) and the annular fixing portion (3) form special-shaped wings (18) corresponding to each other.

2. A reinforcement structure for a plastic fuel tank according to claim 1, characterized in that: The support column body (1) is columnar and the middle section is concave inwards to form a V-shaped surface structure. The middle part of the support column body (1) is provided with an outer annular groove (4).

3. A reinforcement structure for a plastic fuel tank according to claim 1, characterized in that: The connecting flange (2) has an adhesive portion (5) at one end away from the supporting column body (1), the adhesive portion (5) having a plurality of evenly distributed protrusions (6), and the adhesive portion (5) is used to be connected to the inner wall of the fuel tank.

4. A reinforcement structure for a plastic fuel tank according to claim 1, characterized in that: The support column body (1) has a mounting opening (17), and the mounting opening (17) is used to install a pipe clamp (19) or a wave-breaking plate.

5. A reinforcement structure for a plastic fuel tank according to claim 1, characterized in that: The support column body and the connecting flange (2) are provided with a through hole (8) along the central axis, and the inner wall of the support column body (1) located at the through hole (8) has a plurality of reinforcing ribs (9), and the reinforcing ribs (9) are arranged along the inner wall of the through hole (8).

6. A reinforcement structure for a plastic fuel tank according to claim 3, characterized in that: The connecting flange (2) has a plurality of exhaust holes (10), wherein the exhaust holes (10) are located on the bonding portion (5), and the exhaust holes (10) are used to connect the inner wall of the fuel tank and the interior of the fuel tank.

7. A reinforcement structure for a plastic fuel tank according to claim 2, characterized in that: The support column body (1) is hollow inside, and further comprises an upper inner annular groove (11) and a lower inner annular groove (12) inside, wherein the upper inner annular groove (11) and the lower inner annular groove (12) are located on both sides of the outer annular groove (4) in the vertical direction; and further comprises an upper support column (13) and a lower support column (14), wherein both ends of the upper support column (13) are located in the upper inner annular groove (11), and both ends of the lower support column (14) are located in the lower inner annular groove (12).

8. A reinforcement structure for a plastic fuel tank according to claim 7, characterized in that: It also comprises a vertical support column (15), the two ends of which are respectively connected to the upper support column (13) and the lower support column (14).

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