Built-in part used for enhancing rigidity of plastic oil tank and having noise suppression function and oil tank provided with built-in part

Abstract

The utility model relates to a built-in part used for enhancing the rigidity of a plastic oil tank and having a noise suppression function and an oil tank provided with the built-in part, the built-in part used for enhancing the rigidity of the plastic oil tank and having the noise suppression function comprises a sheet type enhancing structure and a fixed connecting face, and the fixed connecting face is used for being fixedly connected with the inner surface of the plastic oil tank; the fixed connecting surfaces are at least arranged at the upper and lower ends of the sheet-type reinforcing structure and used for being fixedly connected with the upper and lower shells of the oil tank, and the sheet-type reinforcing structure divides the oil tank into more than two space areas. As the reinforced built-in part adopts a sheet structure as a reinforced structure, the contact surface of the connecting structure and the oil tank shell can be conveniently expanded to a larger area, the stress distribution of the oil tank and the built-in part is fully improved, and the deformation control effect of the built-in part on the oil tank is improved. A connecting structure of the part and the side wall of the oil tank can be conveniently added on the side face, and the problem that an existing oil tank built-in reinforcing part cannot control deformation of the side face of the oil tank is solved. Meanwhile, according to the scheme, oil liquid is prevented from flowing in the tank body, oil liquid noise is reduced, and the noise reduction effect of the oil tank can be achieved.

Description

Technical Field

[0001] The present application relates to a built-in component, in particular to a built-in component for enhancing the rigidity of a plastic oil tank and having the function of suppressing noise, and an oil tank provided with the built-in component, belonging to the technical field of the structure of built-in components of oil tanks. Background Art

[0002] With the development of automobile electrification, there is a large demand for hybrid vehicle fuel tanks. In order to reduce system emissions, hybrid fuel tanks are sealed, so the fuel tank needs to withstand a certain internal pressure (about -15~+35kPa). In order to ensure the pressure resistance of plastic fuel tanks, the current industry-used technology is to design reinforced built-in parts connecting the upper and lower inner walls of the fuel tank. In special cases, reinforced built-in parts are also suitable for normal pressure fuel tanks to partially enhance the rigidity of the tank body.

[0003] At the same time, when hybrid vehicles use electric drive, the engine is not working, the background noise is reduced, and the fuel tank needs to have better noise suppression capabilities to prevent the oil noise in the tank from being perceived by customers. The current common practice in the industry is to add wave-breaking plates in the fuel tank to prevent the flow of oil.

[0004] The use of these two types of parts solves the strength and noise problems of the fuel tank respectively, but these two parts will interfere with each other in the narrow space inside the fuel tank, so that the reinforced internal components and wave-breaking plates cannot be arranged in the ideal position at the same time, and occupy a certain volume of the fuel tank. The existing technology cannot make the fuel tank achieve the best performance in both pressure resistance and noise suppression. Therefore, a new solution is urgently needed to solve the above technical problems and meet the structural and manufacturing process requirements of plastic fuel tanks. Summary of the invention

[0005] The present application aims at the problems existing in the prior art and provides a built-in component for enhancing the rigidity of a plastic fuel tank, controlling the deformation of the fuel tank and reducing the noise of the fuel tank, and a fuel tank provided with the built-in component. The technical solution satisfies the problems of good pressure resistance and noise suppression at the same time. The built-in component solves the problem of the pressure resistance stiffness of the fuel tank and the problem of noise reduction of the fuel tank, making the internal structural layout of the fuel tank more reasonable, increasing the ability of the original pressure resistance enhancement device of the fuel tank to control the deformation of the fuel tank, and achieving a good noise reduction effect. At the same time, the number of fuel tank enhancement devices and noise reduction devices used is reduced, and the occupancy of the effective volume of the fuel tank is reduced.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the present application is as follows: a built-in part for enhancing the rigidity of a plastic oil tank and having the function of suppressing noise, the built-in part includes a sheet-type reinforcement structure and a fixed connection surface, the fixed connection surface is used to connect and fix with the inner surface of the plastic oil tank, the fixed connection surface is at least arranged at the upper and lower ends of the sheet-type reinforcement structure, and is used to be fixedly connected with the upper and lower shells of the oil tank, the sheet-type reinforcement structure divides the oil tank into more than two spatial areas, controls the deformation of the upper and lower shells of the oil tank under a high-pressure environment, and meets the use conditions. This solution can play a role in preventing waves and reducing oil noise, and strengthen the rigidity of the oil tank shell. The material of the sheet-type reinforcement structure is plastic or recycled material, and metal materials and high-strength materials can be used where the strength needs to be increased. In this solution, since the enhanced built-in part adopts a sheet-type structure as a reinforcement structure, the contact surface between its connection structure and the oil tank shell can be conveniently expanded to a larger area, which can fully improve the stress distribution between the oil tank and the built-in part, and increase the deformation control effect of this built-in part on the oil tank. At the same time, this part can conveniently add a connection structure with the side wall of the oil tank on the side, solving the problem that the current built-in reinforcement part of the oil tank cannot control the deformation of the side of the oil tank. At the same time, the use of a sheet-type reinforcement structure objectively blocks the flow of oil in the tank and reduces the generation of oil noise. By carefully arranging the position of this part and the area of ​​the sheet-type structure, the noise reduction effect of the oil tank can be effectively achieved. This technical solution simultaneously meets the problems of better oil tank pressure resistance and noise reduction. This built-in part solves the problem of oil tank rigidity and the problem of oil tank noise reduction, making the internal structure layout of the oil tank more reasonable, reducing the number of original oil tank pressure resistance reinforcement devices and noise reduction devices, and reducing the occupation of the effective volume of the oil tank.

[0007] As an improvement of the present application, in order to increase the strength of the sheet-type reinforcement structure, the sheet-type reinforcement structure is provided with reinforcement ribs, which can serve as a support frame to strengthen the strength of the plastic oil tank.

[0008] As an improvement of the present application, the sheet-type reinforcement structure is provided with through holes. The purpose of the holes is to allow liquid to communicate and reduce the reflection ability of water waves. It is used to reduce liquid impact leakage and serve as a built-in pipeline and wiring harness channel. The size of the holes is less than 20 mm, and the number of the holes needs to meet the necessary strength requirements of the sheet-type reinforcement structure and cannot destroy the sheet-type reinforcement structure's function of controlling tank deformation.

[0009] As an improvement of the present application, if necessary, a connecting structure can be added to the side of the sheet reinforcement structure for fixed connection with the side wall of the oil tank to control the compression deformation of the side wall of the oil tank. The fixed connection surface is arranged on the left and / or right side of the frame body for fixed connection with the oil tank shell.

[0010] As an improvement of the present application, a pitted structure is provided on the fixed connection surface, and the material is HDPE or fiber-reinforced HDPE, so as to facilitate better connection with the oil tank.

[0011] A fuel tank, wherein the number of built-in parts is one or more, and the built-in parts are arranged in parallel and / or crosswise in the shell. The parallel and / or crosswise arrangement of the built-in parts divides the fuel tank into several spaces, thereby achieving the purpose of noise reduction. Different numbers are arranged according to the noise requirements and strength requirements of the fuel tank to meet the noise and strength requirements of different fuel tanks, and further enhance the stability of the fuel tank shell. According to the different sizes of the fuel tank, different numbers of frame-type built-in parts are arranged inside the fuel tank to increase the constraints of the fuel tank shell and enhance the rigidity of the fuel tank, and divide the fuel tank space to reduce fuel noise.

[0012] Compared with the prior art, the present application has the following advantages: 1. The scheme provides a fuel tank built-in part including a sheet-type reinforcement structure and a structure connected to the inner surface of the plastic fuel tank, wherein the fixed connection structure is at least arranged at the upper and lower ends of the sheet-type reinforcement structure, and is used to be fixedly connected to the upper and lower shells of the fuel tank to control the deformation of the upper and lower surfaces of the fuel tank shell. 2. If necessary, a connection structure can be added to the side of the sheet-type reinforcement structure for fixed connection with the side wall of the fuel tank, which can conveniently control the deformation of the side wall of the fuel tank. 3. The built-in part adopts a sheet-type structure as a reinforcement structure, and the contact surface between the connection structure and the fuel tank shell can be flexibly controlled and can be expanded to a larger area, which can fully improve the stress distribution between the fuel tank and the built-in part, and increase the deformation control effect of the built-in part on the fuel tank. 4. The built-in part is arranged in the fuel tank, and the deformation of the shell in the connection area between the built-in part and the fuel tank is controlled by the sheet-type reinforcement structure, so as to increase the rigidity of the fuel tank and enable the fuel tank to have pressure resistance. According to the different pressure resistance requirements of the fuel tank, the deformation level of the fuel tank is controlled by increasing or decreasing the number of built-in parts, so as to achieve the purpose of controlling the deformation of the fuel tank under high pressure. 5. The built-in parts are arranged in the oil tank, and the oil tank space is divided into smaller spaces through parallel or cross arrangement to prevent the flow of oil and reduce noise. 6. According to different oil tank noise requirements, the number of built-in parts can be flexibly increased or decreased to control the number and size of the spaces divided in the oil tank space, so as to achieve the purpose of controlling the noise level of the oil tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 Schematic diagram of the upper and lower connections of the built-in parts structure;

[0014] Figure 2 Schematic diagram of the up, down, left, and right connections of the built-in parts structure;

[0015] Figure 3 Schematic diagram of the upper and lower and one-side connections of the built-in parts structure;

[0016] Figure 4 Schematic diagram of reinforcing ribs;

[0017] Figure 5 Schematic diagram of pitting;

[0018] Figure 6 Schematic diagram of the opening;

[0019] Figure 7 Fuel tank application diagram Figure 1 ;

[0020] Figure 8 Fuel tank application diagram Figure 2 ;

[0021] Fig. 9 Fuel tank application diagram Figure 3 .

[0022] In the figure: 1. Sheet reinforcement structure, 2. Fixed connection surface, 3. Reinforcement ribs, 4. Pockmarks, 5. Openings, 6. Fuel tank, 7. Internal parts. DETAILED DESCRIPTION

[0023] In order to deepen the understanding of the present application, the present embodiment is described in detail below with reference to the accompanying drawings.

[0024] Example 1: See Figure 1 — Figure 2 , a built-in part for enhancing the rigidity of a plastic oil tank and suppressing noise, the built-in part 7 includes a sheet-type reinforcement structure 1 and a fixed connection surface 2, the fixed connection surface 2 is used to connect and fix with the inner surface of the plastic oil tank, the fixed connection surface is at least arranged at the upper and lower ends of the sheet-type reinforcement structure, and is used to be fixedly connected with the upper and lower shells of the oil tank, and the sheet-type reinforcement structure divides the oil tank into more than two space areas. This solution can play a role in preventing waves and reducing oil noise, and strengthen the rigidity of the oil tank shell. The material of the sheet-type reinforcement structure is plastic or recycled material, and metal materials and high-strength materials can be used where strength needs to be increased.

[0025] Example 2: See Figure 4 As an improvement of the present application, in order to increase the strength of the sheet-type reinforcement structure, a reinforcing rib 3 is provided on the sheet-type reinforcement structure, which serves as a supporting frame and can play a role in strengthening the strength of the plastic fuel tank.

[0026] Example 3: See Figure 6 As an improvement of the present application, a through hole 5 is provided on the sheet-type reinforcement structure. The purpose of the hole is to allow liquid to communicate and reduce the reflection ability of water waves. It is used to reduce liquid impact leakage and serve as a built-in pipeline and wiring harness channel. The size of the hole is less than 20 mm, and the number of the holes needs to meet the strength requirements of the sheet-type reinforcement structure and cannot destroy the sheet-type reinforcement structure's function of controlling the oil tank deformation.

[0027] Example 4: See Figure 2 , Figure 3As an improvement of the present application, if necessary, a connection structure can be added to the side of the sheet reinforcement structure for fixed connection with the side wall of the oil tank. The fixed connection surface is arranged on the left and / or right side of the frame body for fixed connection with the oil tank shell.

[0028] Example 5: See Figure 5 As an improvement of the present application, a pitted structure 4 is provided on the fixed connection surface, and the material is HDPE or fiber-reinforced HDPE, so as to facilitate better connection with the oil tank.

[0029] Example 6: See Figure 7 — Fig. 9 , a fuel tank, wherein the number of the built-in parts 7 is one or more, and the built-in parts are arranged in parallel and / or crosswise in the shell. According to the different sizes of the fuel tank, different numbers of frame-type built-in parts are arranged inside the fuel tank to achieve the function of dividing the fuel tank space to reduce noise, increase the constraint of the fuel tank shell to enhance the rigidity of the fuel tank, and further strengthen the stability of the fuel tank shell. The built-in parts with a sheet-type reinforcement structure objectively block the flow of oil in the tank body and reduce the generation of oil noise. By carefully arranging the position of this part and the area of ​​the sheet-type structure, the effect of reducing the noise of the fuel tank can be effectively achieved. This technical solution simultaneously meets the problems of better fuel tank pressure resistance and noise reduction. The built-in parts solve the problem of fuel tank rigidity and the problem of fuel tank noise reduction, making the internal structure layout of the fuel tank more reasonable, reducing the number of original pressure-resistant reinforcement devices and noise reduction devices used in the fuel tank, and reducing the occupation of the effective volume of the fuel tank.

[0030] The present application may also combine any one or more features of Examples 2-5 with Example 1 to form a new implementation.

[0031] It should be noted that the above embodiments are not intended to limit the protection scope of the present application, and equivalent changes or substitutions made on the basis of the above technical solutions all fall within the scope of protection of the claims of the present application.

Claims

1. A built-in part for enhancing the rigidity of a plastic fuel tank and suppressing noise, characterized in that: The built-in parts include a sheet-type reinforcement structure and a fixed connection surface, the fixed connection surface is used to be connected and fixed to the inner surface of the plastic oil tank, and the fixed connection surface is at least arranged at the upper and lower ends of the sheet-type reinforcement structure, and is used to be fixedly connected to the upper and lower shells of the oil tank.

2. The built-in component for enhancing the rigidity of a plastic oil tank and suppressing noise according to claim 1, characterized in that: The sheet-type reinforcement structure divides the fuel tank into more than two spatial areas.

3. The built-in component for enhancing the rigidity of a plastic oil tank and suppressing noise according to claim 1, characterized in that: The sheet-type reinforcement structure is provided with reinforcement ribs.

4. The built-in component for enhancing the rigidity of a plastic oil tank and suppressing noise according to claim 1, characterized in that: The sheet-type reinforcement structure is provided with a through hole, and the size of the hole is less than 20 mm.

5. The built-in component for enhancing the rigidity of a plastic oil tank and suppressing noise according to claim 1, characterized in that: The fixed connection surface is arranged on the left side and / or the right side of the sheet-type reinforcement structure, and is used for fixed connection with the oil tank housing.

6. The built-in component for enhancing the rigidity of a plastic oil tank and suppressing noise according to claim 1, characterized in that: The fixed connection surface is provided with a pitted structure, and the material is HDPE or fiber-reinforced HDPE, so as to facilitate better connection with the oil tank.

7. A fuel tank, characterized in that: A built-in component for enhancing the rigidity of a plastic oil tank and suppressing noise as described in any one of claims 1 to 6 is provided, and the number of the built-in component is at least one.

8. The fuel tank according to claim 7, characterized in that: The built-in parts are arranged in parallel and / or crosswise in the shell, dividing the fuel tank into several spatial areas, achieving the effect of reducing noise and enhancing stability.

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