A stretchable built-in welded wave-breaking plate and installation method

Abstract

The present invention relates to a stretchable built-in welded wave-breaking plate, characterized in that the wave-breaking plate comprises an upper body of the wave-breaking plate, a lower body of the wave-breaking plate, and two welded supports arranged between the main body of the wave-breaking plate and the inner surface of the oil tank; the technical solution allows the unstretched wave-breaking plate to enter the traditional formed oil tank from the oil pump port, and is assembled with the pre-welded wave-breaking plate supports, and then the wave-breaking plate is stretched through the limiting groove, thereby increasing the coverage area of ​​the wave-breaking plate and improving the noise reduction effect; at the same time, the present invention uses welded supports instead of rivets, thereby avoiding opening holes in the oil tank again and reducing the hydrocarbon emissions of the oil tank.

Description

Technical Field

[0001] The invention relates to a wave-breaking plate, in particular to a stretchable built-in welded wave-breaking plate and an installation method, belonging to the technical field of oil tank structural components. Background Art

[0002] Nowadays, as people's requirements for automobile comfort continue to increase, the automobile industry's requirements for reducing vehicle noise are also constantly increasing. For automobile fuel systems, the noise of fuel sloshing in the fuel tank has become one of the key issues that need to be addressed when designing the fuel tank. The most effective way to solve fuel tank noise is to add wave-breaking plates in the fuel tank. There are generally two ways to add wave-breaking plates to the fuel tank: 1. Use a special fuel tank molding process method to weld the wave-breaking plates to the inner surface of the fuel tank during the blow molding stage of the fuel tank; 2. Use traditional fuel tank molding process methods. After the fuel tank pump is punched, put the wave-breaking plates into the fuel tank from the fuel pump port, and then fix the wave-breaking plates to the fuel tank by assembly, such as Figure 1 . Since the first method requires the use of special process technology and the process is complicated, the cost is generally much higher than that of traditional blow-molded fuel tanks. In the second method, the size of the wave-breaking plate will be limited by the size of the oil pump port opening, and the noise reduction effect will be greatly reduced; and before the wave-breaking plate and the fuel tank are assembled, holes need to be opened on the surface of the fuel tank to place rivets, which increases the hydrocarbon emissions of the fuel tank to the external environment. Therefore, a new solution is urgently needed to solve the above technical problems. Summary of the invention

[0003] The present invention aims at the problems existing in the prior art and provides a stretchable built-in welded wave-breaking plate and an installation method. This technical solution allows the unstretched wave-breaking plate to enter the traditional formed oil tank from the oil pump port, and is assembled with the pre-welded wave-breaking plate support, and then the wave-breaking plate is stretched through the limiting groove, thereby increasing the coverage area of ​​the wave-breaking plate and improving the noise reduction effect. At the same time, the present invention uses a welded support instead of a rivet, thereby avoiding the need to drill holes in the oil tank again and reducing the hydrocarbon emissions of the oil tank.

[0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is as follows: a stretchable built-in welded wave-breaking plate, which includes an upper body of the wave-breaking plate, a lower body of the wave-breaking plate, and two welded supports arranged between the main body of the wave-breaking plate and the inner surface of the oil tank.

[0005] As an improvement of the present invention, two support grooves, a buckle, two limit grooves, three upper spring plates and two lower spring plates are arranged on the main body of the wave-breaking board. The support grooves cooperate with the welding supports, the limit grooves are respectively arranged at both ends of the main body of the wave-breaking board, and the upper spring plates and the lower spring plates are arranged on the main body of the wave-breaking board.

[0006] As an improvement of the present invention, three slots are provided on the lower body of the anti-wave plate, and the slots match the upper and lower spring sheets and the buckles. When the slots match the spring sheets, it is ensured that the lower body of the anti-wave plate in the extended state remains fixed even under the action of gravity or oil impact, and will not fall off or shrink. When the slots match the buckles, it is ensured that the lower body of the anti-wave plate in the unextended state will not fall off under the action of gravity.

[0007] As an improvement of the present invention, the upper body and / or the lower body of the wave-breaking board are provided with oil holes. The technicians in this field can provide oil holes on the upper body alone or the lower body alone or on the upper and lower bodies according to actual conditions.

[0008] As an improvement of the present invention, a buckle is provided on the upper body of the wave-breaking board, and the buckle is used to match the slot on the lower body of the wave-breaking board; when the buckle matches the slot, it is ensured that the lower body of the wave-breaking board in the unextended state will not fall off under the action of gravity.

[0009] As an improvement of the present invention, each welding support has two front and back slots, and each support slot has two front and back spring plates, which respectively match the two slots of the support to ensure that the wave-breaking plate body remains fixed on the welding support even under the action of gravity or oil impact.

[0010] As an improvement of the present invention, the limit groove on the upper body of the wave-breaking board is set as a serrated groove, and the edge of the lower body of the wave-breaking board has serrations that match the limit groove. At the same time, the number of spring pieces is increased, and the card slot of the lower wave-breaking board body is limited between adjacent spring pieces. Each time a serration is pulled down, the height of the wave-breaking board increases by a certain distance. In this way, the extended height of the wave-breaking board is controlled to adapt to oil tanks of different heights, and the wave-breaking board will not interfere with the oil tank with a smaller internal space.

[0011] A method for installing a stretchable built-in welded wave-breaking plate, the method comprising the following steps:

[0012] 1) Assembly of the upper and lower bodies of the wave-breaking board: Push the lower body of the wave-breaking board upward along the left and right limit slots of the upper body until the slot of the lower body is fully matched with the buckle of the upper body. After the upper and lower bodies of the wave-breaking board are assembled, the wave-breaking board is in an unstretched state, and the upper body and the lower body overlap in height. The two are limited in relative movement in the up and down directions through the cooperation of the buckle and the slot, and the relative movement in the front, back, left and right directions is limited by the limit slot. The total height of the wave-breaking board in the unstretched state is controlled within the opening size range of the oil pump port.

[0013] 2) Assembly of welding support and wave-breaking plate: Put the wave-breaking plate into the oil tank from the oil pump port, and assemble it with the two pre-welded welding supports through the support groove on the main body of the wave-breaking plate. One end of the cylindrical welding support is welded to the inner surface of the oil tank, and the other end is connected with the support groove spring piece on the main body of the wave-breaking plate through the slot. Each welding support has two slots on the front and back, and accordingly, each support groove has two spring pieces.

[0014] 3) After the wave-breaking board is extended and the welding support and the support slot are assembled in place, the buckle is slightly opened in a direction perpendicular to the plane of the wave-breaking board, and the lower body is pulled down along the direction of the limit slot until the slot of the lower body is between the upper spring sheet and the lower spring sheet; after the wave-breaking board is extended in place, the cooperation between the slot and the spring sheet limits the relative movement of the wave-breaking board body up and down, and the limit slot limits the relative movement of the front, back, left and right;

[0015] Multi-stage stretching of the wave-breaking board: The wave-breaking board in this patent can achieve multi-stage stretching. The limit groove of the upper body of the wave-breaking board can be made into a serrated groove, and the edge of the lower body of the wave-breaking board has serrations that match the limit groove. At the same time, the number of spring pieces is increased, and the slot of the lower wave-breaking board body is limited between adjacent spring pieces. Every time a serration is pulled down, the height of the wave-breaking board increases by one section.

[0016] Compared with the prior art, the technical effects of the present invention are as follows:

[0017] 1) This technical solution solves the problem of limited size of wave-breaking plates in traditional fuel tanks and reduces the hydrocarbon emissions caused by additional openings;

[0018] 2) In this solution, each welding support has two slots on the front and back, and each support slot has two spring pieces on the front and back, which match the two slots of the support respectively, so as to ensure that the main body of the wave-breaking plate remains fixed on the welding support even under the action of gravity or oil impact;

[0019] 3) In this solution, the limit groove on the main body of the wave-breaking board is set as a serrated groove, and the edge of the lower body of the wave-breaking board has serrations that match the limit groove. At the same time, the number of spring pieces is increased, and the card slot of the lower wave-breaking board body is limited between adjacent spring pieces. Every time a serration is pulled down, the height of the wave-breaking board increases by a certain distance. In this way, the extension height of the wave-breaking board is controlled to adapt to oil tanks of different heights. For oil tanks with smaller internal space, the wave-breaking board will not interfere with them;

[0020] 4) The present invention realizes the extension and contraction of the upper and lower wave-breaking plates through a simple and effective structure, and cleverly combines the upper and lower wave-breaking plates together, thereby expanding the size of the assembled wave-breaking plates in the fuel tank formed by the traditional process, and better plays the role of reducing the noise of oil sloshing; at the same time, the built-in hot plate welding support is used instead of the welding rivet buckle to fix the wave-breaking plate, avoiding additional openings in the fuel tank, reducing hydrocarbon emissions, and protecting the environment. Compared with the complex fuel tank manufacturing process, it saves costs and tooling equipment investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of assembling the wave-breaking plate from the oil pump port to the oil tank in the prior art;

[0022] Figure 2 A schematic diagram showing the assembly of the extendable wave-breaking plate from the oil pump port into the oil tank;

[0023] Figure 3 The general assembly anti-wave plate is fixed to the anti-wave plate of the present invention;

[0024] Figure 4 A schematic structural diagram of a wave-breaking plate of the present invention;

[0025] Figure 5 Schematic diagram of the assembly process of the main body and the lower body of the anti-wave board;

[0026] Figure 6 Schematic diagram of the assembly of the main body and the lower body of the anti-wave board;

[0027] Figure 7 Schematic diagram of the support groove and the welded support assembly;

[0028] Figure 8 Schematic diagram and cross-sectional view of welding support slot and support slot spring piece;

[0029] Fig. 9 Schematic diagram of welded supports and support grooves;

[0030] Fig.10 Schematic diagram of the wave-breaking board extension process;

[0031] Fig.11 Schematic diagram of the wave-breaking board extended into place;

[0032] Fig.12 Cross-sectional view of the wave-breaking board extended into place;

[0033] Fig.13 .Multi-stage stretching of wave-breaking plates;

[0034] In the figure: 1. welding support, 2. upper body of wave-breaking plate, 3. lower body of wave-breaking plate, 21. support groove, 22. buckle, 23. limit groove, 24. upper spring piece, 25. lower spring piece, 26. oil hole, 31. slot, 4. inner surface of oil tank, 11. welding support slot, 211. support slot spring piece, 5. buckle and slot assembled in place, 6. welding support and support slot assembled in place. DETAILED DESCRIPTION

[0035] In order to deepen the understanding of the present invention, the present embodiment is described in detail below with reference to the accompanying drawings.

[0036] Example 1: See Figure 4 , a stretchable built-in welded anti-wave plate, the anti-wave plate comprises an upper body 2 of the anti-wave plate, a lower body 3 of the anti-wave plate and two welding supports 1 arranged between the main body of the anti-wave plate and the inner surface of the oil tank, the main body 2 of the anti-wave plate is provided with two support grooves 21, a buckle 22, two limiting grooves 23, three upper spring pieces 24 and two lower spring pieces 25, the support groove 21 cooperates with the welding support 1, the limiting grooves 23 are respectively arranged at both ends of the main body of the anti-wave plate, the upper spring piece and the lower spring piece are arranged on the main body of the anti-wave plate, the lower body of the anti-wave plate is provided with three slots 31, the slots 31 match the upper spring piece 24 and the buckle 22, the main body and / or the lower body of the anti-wave plate are provided with an oil hole 26, the main body of the anti-wave plate is provided with a buckle 22, and the buckle is used to match the slot on the lower body of the anti-wave plate, each welding support has two positive and negative slots 11, and each support groove has two support slot spring pieces 211.

[0037] Example 2: See Figure 4 As an improvement of the present invention, the limit groove 23 on the main body of the anti-wave board can also be set as a sawtooth groove, and the edge of the lower body of the anti-wave board has sawteeth that match the limit groove. At the same time, the number of spring pieces is increased, and the card slot of the lower anti-wave board main body is limited between adjacent spring pieces. Every time a sawtooth is pulled down, the height of the anti-wave board increases by a certain distance. Figure 1

[0038] Example 3: See Figure 4 , a method for installing a stretchable built-in welded wave-breaking plate, the method comprising the following steps:

[0039] 1) Assembly of the upper and lower bodies of the anti-wave board: Push the lower body of the anti-wave board upward along the left and right limit grooves of the upper body until the slots of the lower body are fully matched with the buckles of the upper body. Figure 5 and Figure 6After the upper and lower bodies of the wave-breaking board are assembled, the wave-breaking board is in an unstretched state, and the upper body overlaps with the lower body in the height direction. The two are restricted in relative movement in the up and down directions through the cooperation of the buckle and the slot, and the relative movement in the front, back, left and right directions is restricted through the limit slot. The total height of the unstretched state of the wave-breaking board is controlled within the opening size range of the oil pump port.

[0040] 2) Assembly of welding support and wave-breaking plate: Put the wave-breaking plate into the oil tank from the oil pump port, and assemble it through the support groove on the main body of the wave-breaking plate and the two pre-welded welding supports, such as Figure 7

[0041] One end of the cylindrical welded support is welded to the inner surface of the oil tank, and the other end is connected with the support slot spring piece on the main body of the wave-breaking plate through a slot. Figure 8 ;

[0042] Each welding support has two slots on the front and back. Correspondingly, each support slot has two springs, such as Fig. 9 ;

[0043] 3) After the wave-breaking board is extended and the welding support and support slot are assembled in place, slightly open the buckle in the direction perpendicular to the plane of the wave-breaking board, and pull the lower body down along the limit slot until the slot of the lower body is between the upper spring sheet and the lower spring sheet. Fig.10 and Fig.11 After the anti-wave plate is extended to the right position, the cooperation between the card slot and the spring piece limits the relative movement between the main body of the anti-wave plate, such as Fig.12 , the limit slots limit the relative movement of front, back, left and right;

[0044] In addition, the wave-breaking board can also achieve multi-stage extension. The limit groove on the main body of the wave-breaking board can be made into a serrated groove, and the edge of the lower body of the wave-breaking board has serrations that match the limit groove. At the same time, the number of spring pieces is increased, and the slot of the lower wave-breaking board main body is limited between adjacent spring pieces. Every time a serration is pulled down, the height of the wave-breaking board increases by one section. Figure 1 .

[0045] It should be noted that the above embodiments are not intended to limit the protection scope of the present invention, and equivalent changes or substitutions made on the basis of the above technical solutions all fall within the protection scope of the claims of the present invention.

Claims

1. A stretchable built-in welded wave-breaking plate, characterized in that: The wave-breaking plate comprises a wave-breaking plate main body, a wave-breaking plate lower body and two welding supports arranged between the wave-breaking plate main body and the inner surface of the oil tank. The main body of the wave-breaking board is provided with two support grooves, a buckle, two limit grooves, three upper spring sheets and two lower spring sheets. The support grooves match the welding support, the limit grooves are respectively arranged at both ends of the main body of the wave-breaking board, and the upper spring sheet and the lower spring sheet are arranged on the main body of the wave-breaking board; the limit groove on the main body of the wave-breaking board is arranged as a serrated groove, and the edge of the lower body of the wave-breaking board has serrations matching the limit grooves, and the lower body of the wave-breaking board is provided with three slots, which match the upper and lower spring sheets and the buckle. Each welding support has two slots on the front and back, and each support slot has two springs on the front and back. The installation method of the stretchable built-in welded wave-breaking plate includes the following steps: 1) Assembly of the upper and lower bodies of the wave-breaking board: Push the lower body of the wave-breaking board upward along the left and right limit grooves of the upper body until the card slot of the lower body is fully matched with the buckle of the upper body. After the upper and lower bodies of the wave-breaking board are assembled, the wave-breaking board is in an unextended state, and the upper body and the lower body overlap in the height direction. The two are restricted in the vertical direction by the cooperation of the buckle and the card slot, and the relative movement in the front, back, left and right directions is restricted by the limit groove; 2) Assembly of welding support and wave-breaking plate: Put the wave-breaking plate into the oil tank from the oil pump port, and assemble it with the two pre-welded welding supports through the support groove on the main body of the wave-breaking plate. One end of the cylindrical welding support is welded to the inner surface of the oil tank, and the other end is connected with the support groove spring piece on the main body of the wave-breaking plate through the slot. Each welding support has two slots on the front and back, and accordingly, each support groove has two spring pieces on the front and back. 3) After the wave-breaking plate is extended and the welding support and the support groove are assembled in place, the buckle is slightly opened in a direction perpendicular to the plane of the wave-breaking plate, and the lower body is pulled downward along the direction of the limit groove until the slot of the lower body is between the upper spring sheet and the lower spring sheet. After the wave-breaking plate is extended in place, the cooperation between the slot and the spring sheet limits the relative movement of the wave-breaking plate body up and down, and the limit groove limits the relative movement of the front, back, left and right. In the step 1), the total height of the wave-breaking plate in the unextended state is controlled within the opening size range of the oil pump port.

2. The stretchable built-in welded wave-breaking plate according to claim 1, characterized in that: The upper body of the wave-breaking plate and / or the lower body of the wave-breaking plate are provided with oil holes.

3. The stretchable built-in welded wave-breaking plate according to claim 1, characterized in that: The upper body of the wave-breaking board is provided with a buckle, and the buckle is used to match with the slot on the lower body of the wave-breaking board.

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