A needle-shaped noise reduction plate and its installation method

Abstract

The present invention discloses a needle-shaped noise reduction plate. The needle-shaped noise reduction plate comprises an injection-molded flat plate, on which two symmetrical mounting platforms are integrally formed, the mounting platforms penetrate the flat plate, the distance between the top surface of the mounting platform and the top surface of the flat plate is greater than the distance between the bottom surface of the mounting platform and the bottom surface of the flat plate, the flat plate is provided with a first through hole adjacent to the outer wall of the mounting platform, the inner side of the mounting platform is provided with a second through hole, the first and second through holes pass through a snap-fit ​​component to mount the flat plate on the corner area of ​​the oil tank, a number of needle-shaped protrusions are arranged around the mounting platform, the needle-shaped protrusions are integrally formed with the flat plate, and extend to the upper and lower sides of the flat plate, and a number of liquid-passing holes are provided on the flat plate in areas avoiding the mounting platforms and the needle-shaped protrusions. The present invention solves the problem that the existing wave-breaking plates cannot be installed due to the small space in the corner area of ​​the oil tank, resulting in poor noise reduction effect.

Description

Technical Field

[0001] The present invention relates to the field of automotive parts, and particularly to a needle-shaped noise reduction plate and its installation method. Background Art

[0002] With the continuous improvement of the vehicle NVH (Noise, Vibration, Harshness) of automobiles, the noise generated by the fuel sloshing in the fuel tank has gradually attracted attention as one of the important factors affecting the vehicle NVH. Therefore, a wave baffle is installed in the fuel tank to achieve the effect of noise reduction. However, the shape of the fuel tank is complex, especially the space in the corner area of the fuel tank is narrow, and the existing structure of the wave baffle cannot be installed, resulting in poor noise reduction effect. Summary of the Invention

[0003] The purpose of the present invention is to provide a needle-shaped noise reduction plate that can be installed in the corner area of the fuel tank to improve the noise reduction effect of the fuel tank in view of the deficiencies of the existing technology.

[0004] To achieve the above purpose, the technical solution adopted by the needle-shaped noise reduction plate of the present invention is:

[0005] A needle-shaped noise reduction plate includes an injection-molded flat plate. Two symmetric installation platforms are integrally formed on the flat plate. The installation platforms penetrate through the flat plate. The distance from the top surface of the installation platform to the top surface of the flat plate is greater than the distance from the bottom surface of the installation platform to the bottom surface of the flat plate. A first through hole is opened on the outer side wall of the flat plate adjacent to the installation platform, and a second through hole is opened inside the installation platform. The flat plate is installed in the corner area of the fuel tank by passing the first and second through holes through the buckle member. A number of needle-shaped protrusions are arranged around the installation platform. The needle-shaped protrusions are integrally formed with the flat plate and extend to the upper and lower sides of the flat plate. A number of liquid passing holes are opened in the area of the flat plate avoiding the installation platform and the needle-shaped protrusions.

[0006] Preferably, a slope groove that gradually contracts from bottom to top is opened on one side of the installation platform facing the first through hole.

[0007] Preferably, a material reduction hole is opened on the side of the installation platform facing away from the first through hole, and the material reduction hole communicates with the middle part of the second through hole.

[0008] Preferably, a first ring of ribs connected to the installation platform is arranged at the edge of the material reduction hole.

[0009] Preferably, reinforcing ribs are arranged between the two sides of the installation platform and the top surface of the flat plate.

[0010] Preferably, a second ring of ribs is arranged at the edge of the flat plate.

[0011] To achieve the above purpose, the technical solution adopted by the installation method of the needle-shaped noise reduction plate of the present invention is:

[0012] An installation method of a needle-shaped noise reduction plate includes the following steps:

[0013] S1: Weld the buckle member to the corresponding corner area of the fuel tank. The buckle member includes a bottom plate, with vertical frames and vertical plates bent on both sides of the bottom plate. The vertical plate is inside the vertical frame, and the top of the vertical plate is bent to form a clamping arm in the shape of an inverted '7'. A third through hole is punched in the hypotenuse section of the clamping arm, and a pressing tongue is formed by stamping at the top edge of the third through hole. The pressing tongues on both sides are in the shape of an inverted '8'.

[0014] S2: The two first through holes on the needle-shaped noise reduction plate are correspondingly sleeved outside the vertical frame. The vertical frame is used as a guide to push down the needle-shaped noise reduction plate. The second through hole is sleeved on the pressing tongue, and the slope groove drives the pressing tongue to open outwards until the side wall of the installation platform completely slides past the pressing tongue. The pressing tongue and the straight edge section of the clamping arm cooperate to lock the needle-shaped noise reduction plate.

[0015] S3: Fold the part of the vertical frame higher than the top surface of the installation platform to form a bending part to further lock the needle-shaped noise reduction plate.

[0016] Preferably, at least one side of the bottom plate is provided with welding positioning holes.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The needle-shaped protrusions destroy the flow formed in the corner area of the fuel tank from all dimensions, slow down the impact of the fuel on the side wall of the fuel tank, that is, reduce the noise generated by the fuel hitting the side wall of the fuel tank. The liquid passing holes reduce the noise generated by the fuel hitting the flat plate. The first and second through holes and the material reducing holes also play the role of liquid passing holes, thereby improving the noise reduction effect of the fuel tank.

[0019] 2. The needle-shaped noise reduction plate is an injection molded part, which helps to meet the requirements of vehicle lightweight.

[0020] 3. The needle-shaped noise reduction plate is installed in the corner area of the fuel tank through the buckle member, and the operation is convenient, firm and reliable. Description of the Drawings

[0021] Figure 1 is a schematic structural diagram of the front of a needle-shaped noise reduction plate;

[0022] Figure 2 is Figure 1 the enlarged view of A in

[0023] Figure 3 is a schematic structural diagram of the back of a needle-shaped noise reduction plate;

[0024] Figure 4 is Figure 2 the enlarged view of B in

[0025] Figure 5 is the front view of the buckle member;

[0026] Figure 6 is a side view of the buckle part;

[0027] Figure 7 is a top view of the buckle part;

[0028] Figure 8 is an installation schematic diagram of the buckle part and the fuel tank;

[0029] Figure 9 is Figure 8 an enlarged view of part C of

[0030] Figure 10 is an installation schematic diagram of the needle-shaped noise reduction plate;

[0031] Figure 11 is a schematic diagram of the bent vertical frame.

[0032] Among them, 1 is the needle-shaped noise reduction plate, 11 is the flat plate, 12 is the second ring rib, 13 is the installation platform, 131 is the second through hole, 132 is the slope groove, 133 is the material reduction hole, 14 is the first through hole, 15 is the first ring rib, 16 is the reinforcing rib, 17 is the needle-shaped protrusion, 18 is the liquid passing hole, 2 is the buckle part, 21 is the bottom plate, 211 is the welding positioning hole, 22 is the vertical frame, 221 is the bending part, 23 is the vertical plate, 24 is the clamping arm, 241 is the third through hole, 25 is the pressing tongue, 3 is the fuel tank. Specific Embodiments

[0033] The present invention will be further clarified below in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. After reading the present invention, various equivalent modifications made by those skilled in the art to the present invention all fall within the scope defined by the appended claims of this application.

[0034] Such as Figures 1-4As shown in the figure, a needle-shaped noise reduction plate 1 includes an injection-molded flat plate 11 with a length of 212 mm, a width of 109 mm, and a thickness of 2 mm. A second ring of ribs 12 is integrally formed at the edge of the flat plate, protruding 2 mm above the top surface of the flat plate and 2 mm below the bottom surface of the flat plate. The second ring of ribs improves the strength of the flat plate, making it not easily deformed when impacted by fuel. Two symmetrical mounting platforms 13 are integrally formed in the middle of the flat plate, passing through the flat plate. The top surface of the mounting platform protrudes 12 mm above the top surface of the flat plate, and the bottom surface of the mounting platform protrudes 2.8 mm below the bottom surface of the flat plate. A first through hole 14 is opened on the outer side wall of the flat plate adjacent to the mounting platform, and a second through hole 131 is opened on the inner side of the mounting platform. The first and second through holes pass through the buckle 2 to mount the flat plate in the corner area of the fuel tank 3. A slope groove 132 that gradually contracts from bottom to top is opened on one side of the mounting platform facing the first through hole to facilitate the sliding of the buckle. A material reduction hole 133 is opened on the side of the mounting platform facing away from the first through hole, and the material reduction hole communicates with the middle part of the second through hole. The second through hole is oblong. Adding the material reduction hole is to increase the strength of the mold insert used to form the second through hole, and it is also beneficial for the demolding of the second through hole. A first ring of ribs 15 connected to the mounting platform is integrally formed at the edge of the material reduction hole to ensure the strength at the opening of the mounting platform. Reinforcing ribs 16 are integrally formed between both sides of the mounting platform and the top surface of the flat plate to improve the strength of the mounting platform. A number of needle-shaped protrusions 17 are arranged around the mounting platform. The needle-shaped protrusions are integrally formed with the flat plate and extend to both the upper and lower sides of the flat plate. A number of liquid passing holes 18 are opened in the area of the flat plate avoiding the mounting platform and the needle-shaped protrusions.

[0035] The specific working process and principle of a needle-shaped noise reduction plate: The needle-shaped protrusions disrupt the surge flow formed in the corner area of the fuel tank from all dimensions, slowing down the impact of the fuel on the side wall of the fuel tank, that is, reducing the noise generated by the fuel impacting the side wall of the fuel tank. The liquid passing holes reduce the noise generated by the fuel impacting the flat plate. The first and second through holes and the material reduction hole also function as liquid passing holes, thereby improving the noise reduction effect of the fuel tank.

[0036] As Figures 5-11 shown, an installation method of a needle-shaped noise reduction plate includes the following steps:

[0037] S1: Weld the buckle to the corresponding corner area of the fuel tank. The buckle includes a bottom plate 21. Two welding positioning holes 211 are opened on the front side of the bottom plate, facilitating the buckle to quickly find the welding position, thereby improving work efficiency. Vertical frames 22 and vertical plates 23 are bent on both sides of the bottom plate. The vertical plate is inside the vertical frame. The top of the vertical plate is bent into a clamping arm 24 in the shape of an inverted 7. A third through hole 241 is punched on the hypotenuse section of the clamping arm. A pressing tongue 25 is formed by stamping at the top edge of the third through hole. The pressing tongues on both sides are in the shape of an inverted eight.

[0038] S2: The two first through holes on the needle-shaped noise reduction plate are correspondingly sleeved on the outer side of the vertical frame. The vertical frame is used as a guide to push the needle-shaped noise reduction plate downward. The second through hole is sleeved with the pressing tongue, and the slope groove drives the pressing tongue to open outward until the side wall of the installation platform completely slides past the pressing tongue. The pressing tongue and the straight edge section of the clamping arm cooperate to lock the needle-shaped noise reduction plate;

[0039] S3: Press and fold the part of the vertical frame higher than the top surface of the installation platform towards the pressing tongue to form a bending part 221, further locking the needle-shaped noise reduction plate.

Claims

1. A method for installing a needle-shaped noise reduction plate, characterized in that The steps include the following: S1: Weld the buckle part to the corresponding corner area of the fuel tank. The buckle part includes a bottom plate, and at least one side of the bottom plate is provided with welding positioning holes. Vertical frames and vertical plates are bent on both sides of the bottom plate. The vertical plate is inside the vertical frame. The top of the vertical plate is bent to form a clamping arm in an inverted 7 shape. A third through hole is punched in the hypotenuse section of the clamping arm. A pressing tongue is formed by stamping at the top edge of the third through hole. The pressing tongues on both sides are in an inverted eight shape. The needle-shaped noise reduction plate includes an injection-molded flat plate. Two symmetrical mounting platforms are integrally formed on the flat plate. The mounting platforms penetrate the flat plate. The distance from the top surface of the mounting platform to the top surface of the flat plate is greater than the distance from the bottom surface of the mounting platform to the bottom surface of the flat plate. A first through hole is opened on the outer side wall of the flat plate adjacent to the mounting platform. A slope groove that gradually contracts from bottom to top is opened on one side of the mounting platform facing the first through hole. A second through hole is opened inside the mounting platform. The first and second through holes pass through the buckle part to install the flat plate in the corner area of the fuel tank. A number of needle-shaped protrusions are arranged around the mounting platform. The needle-shaped protrusions are integrally formed with the flat plate and extend to the upper and lower sides of the flat plate. A number of liquid passing holes are opened in the area of the flat plate avoiding the mounting platform and the needle-shaped protrusions; S2: The two first through holes on the needle-shaped noise reduction plate are correspondingly sleeved outside the vertical frame. The vertical frame is used as a guide to push down the needle-shaped noise reduction plate. The second through hole is sleeved on the pressing tongue. The slope groove drives the pressing tongue to open outwards until the side wall of the mounting platform completely slides past the pressing tongue. The pressing tongue and the straight edge section of the clamping arm cooperate to lock the needle-shaped noise reduction plate; S3: Fold the part of the vertical frame higher than the top surface of the mounting platform to form a bending part to further lock the needle-shaped noise reduction plate.

2. The installation method of the needle-shaped noise reduction plate according to claim 1, characterized in that: A material reducing hole is opened on the side of the mounting platform facing away from the first through hole. The material reducing hole communicates with the middle part of the second through hole.

3. The installation method of the needle-shaped noise reduction board according to claim 2, characterized in that: A first ring of ribs connected to the mounting platform is arranged at the edge of the material reducing hole.

4. The installation method of the needle-shaped noise reduction board according to claim 3, characterized in that: Reinforcing ribs are arranged between the two sides of the mounting platform and the top surface of the flat plate.

5. The installation method of the needle-shaped noise reduction board according to claim 1, characterized in that: A second ring of ribs is arranged at the edge of the flat plate.

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