A composite noise reduction layer structure for automotive hoods

Abstract

This utility model provides a composite noise reduction layer structure for an automotive cover. The composite noise reduction layer structure includes: a cover body; an installation opening located at the bottom of the cover body, with reinforcing ribs near both sides inside the installation opening, and connecting interfaces near the ends of the bottom of each reinforcing rib, each connecting interface housing a magnetic suction component; a second metal layer installed at the bottom of four magnetic suction components, with a damping layer at the bottom of the second metal layer, the damping layer having multiple noise reduction openings inside, and a first metal layer at the bottom of the damping layer. The composite noise reduction layer structure for an automotive cover provided by this utility model improves the strength of the noise reduction structure through a multi-layered design, while simultaneously enhancing the noise reduction effect for both low and high frequencies through multi-layered noise elimination.

Description

Technical Field

[0001] This utility model relates to the field of noise reduction technology for automotive cover plates, and in particular to a composite noise reduction layer structure for automotive cover plates. Background Technology

[0002] The hood, also known as the engine cover, is the most conspicuous body component and one of the parts that car buyers frequently inspect. The main requirements for the engine cover are heat and sound insulation, lightweight, and high rigidity. The engine cover can prevent rainwater and dust from entering the engine compartment and protect core components. The chassis guard plate can resist road debris from scratching the oil pan and battery pack, preventing damage from bottoming out. The outer cover is made of weather-resistant materials such as aluminum alloy to resist ultraviolet rays and acid rain, preventing aging and rust. The streamlined design of the car cover shapes the body, and the metal reinforcing rib structure improves the body rigidity. The chassis cover of new energy vehicles is even made of high-strength materials to form a battery protective armor.

[0003] Car covers commonly use sound-absorbing cotton for noise reduction. The materials and designs vary in different parts. Fiberglass or PU foam sound insulation cotton is applied to the inside of the hood, using its porous structure to absorb mid-to-high frequency noise from the engine. The noise-reducing layer structure used in car covers is mainly to reduce noise transmission, provide heat insulation protection, and improve structural stability. The noise-reducing layer structure in car covers can effectively reduce noise transmission and provide heat insulation protection, while also preventing rust on one side of the car cover.

[0004] The existing automotive cover noise reduction layer structure uses a single material, which results in poor noise reduction for both high and low frequencies. Furthermore, it is easily damaged by external forces, affecting the normal noise reduction of the automotive cover.

[0005] Therefore, it is necessary to provide a composite noise reduction layer structure for automotive cover plates to solve the above-mentioned technical problems. Utility Model Content

[0006] This utility model provides a composite noise reduction layer structure for automobile cover plates, which solves the problem that single-layer automobile cover plate noise reduction structures have poor noise reduction effect and are easily damaged by external forces, affecting normal noise reduction.

[0007] To solve the above-mentioned technical problems, the composite noise reduction layer structure of the automobile cover plate provided by this utility model includes: a cover plate body;

[0008] The mounting port is located at the bottom of the cover plate body. Reinforcing ribs are provided inside the mounting port near both sides. A mating interface is provided at the bottom of the two reinforcing ribs near both ends. A magnetic suction component is installed inside each mating interface.

[0009] The second metal layer is installed at the bottom of the four magnetic components. A damping layer is provided at the bottom of the second metal layer. Multiple noise reduction ports are opened inside the damping layer. The first metal layer is provided at the bottom of the damping layer.

[0010] The second metal layer and the mounting opening are attached to the reinforcing rib. The first and second metal layers wrap the damping layer, which is made of polyester sound-absorbing cotton, and the metal layer is made of copper alloy.

[0011] Preferably, the back of the cover plate body is provided with two mating structures, and a connecting ring is installed on the bottom of the cover plate body near the front by a fixing piece;

[0012] Both the connecting ring and the docking structure are auxiliary to the installation of the cover plate body.

[0013] Preferably, the magnetic attraction assembly includes a magnetic attraction structure and a connecting structure, the connecting structure being connected to the top of the second metal layer, and the magnetic attraction structure being installed inside the interface;

[0014] The magnetic structure and the connecting structure are attracted to each other.

[0015] Preferably, a heat insulation and noise reduction structure is installed at the bottom of the first metal layer, and the bottom of the heat insulation and noise reduction structure is provided with multiple sound-absorbing holes;

[0016] The sound-absorbing holes do not penetrate the heat insulation and noise reduction structure, but can provide initial sound absorption and noise reduction.

[0017] Preferably, the heat insulation and noise reduction structure includes a mating layer, a heat insulation layer, and a sound-absorbing layer, wherein the mating layer is used to fix the heat insulation and noise reduction structure to the bottom of the first metal layer;

[0018] The insulation layer can provide insulation.

[0019] Preferably, the heat insulation layer is glass fiber cotton, and the mating layer is acrylic emulsion adhesive.

[0020] Compared with related technologies, the composite noise reduction layer structure of the automobile cover plate provided by this utility model has the following beneficial effects:

[0021] This utility model provides a composite noise reduction layer structure for an automotive cover. To improve the noise reduction effect of the noise reduction structure in the automotive cover on low and high frequency noise, an installation port for installing two reinforcing ribs is first opened at the bottom of the cover body. Each reinforcing rib has two mating interfaces at its bottom. Then, the noise reduction structure consisting of a second metal layer, a damping layer, and a first metal layer can be installed in the installation port using a magnetic assemblies. The magnetic assemblies are positioned in the mating interfaces to ensure a good fit. To enhance installation stability, some glue can be applied to the connection between the second metal layer and the installation port. This design uses a multi-layer structure to improve the strength of the noise reduction structure, while also improving the noise reduction effect on low and high frequencies through multi-layer elimination. Attached Figure Description

[0022] Figure 1 A schematic diagram of a preferred embodiment of the composite noise reduction layer structure for an automotive cover provided by this utility model;

[0023] Figure 2 A schematic diagram of the heat insulation and noise reduction structure provided for this utility model;

[0024] Figure 3 A schematic diagram of the magnetic attraction component is provided for this utility model;

[0025] Figure 4 Provided for this utility model Figure 3 An enlarged view of point A shown;

[0026] Figure 5 A schematic diagram of the docking layer is provided for this utility model.

[0027] The diagram is labeled as follows: 1. Cover plate body, 2. Fixing plate, 3. Connecting ring, 4. Butt joint structure, 5. Sound absorption hole, 6. Heat insulation and noise reduction structure, 601. Butt joint layer, 602. Heat insulation layer, 603. Sound absorption layer, 7. First metal layer, 8. Damping layer, 9. Noise reduction port, 10. Second metal layer, 11. Butt joint, 12. Mounting port, 13. Reinforcing rib, 14. Magnetic component, 141. Magnetic structure, 142. Connection structure. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0029] Please refer to the following: Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic diagram of a preferred embodiment of the composite noise reduction layer structure for an automotive cover provided by this utility model; Figure 2A schematic diagram of the heat insulation and noise reduction structure provided for this utility model; Figure 3 A schematic diagram of the magnetic attraction component is provided for this utility model; Figure 4 Provided for this utility model Figure 3 An enlarged view of point A shown; Figure 5 A schematic diagram of the docking layer is provided for this utility model. The composite noise reduction layer structure of the automobile cover plate includes: cover plate body 1;

[0030] Mounting port 12 is located at the bottom of the cover plate body 1. Reinforcing ribs 13 are provided inside the mounting port 12 near both sides. Connecting interfaces 11 are provided at the bottom of the two reinforcing ribs 13 near both ends. A magnetic suction component 14 is installed inside each connecting interface 11.

[0031] The second metal layer 10 is installed at the bottom of the four magnetic suction components 14. A damping layer 8 is provided at the bottom of the second metal layer 10. Multiple noise reduction ports 9 are opened inside the damping layer 8. A first metal layer 7 is provided at the bottom of the damping layer 8.

[0032] The second metal layer 10 and the mounting opening 12 are attached to the reinforcing rib 13. The first metal layer 7 and the second metal layer 10 wrap the damping layer 8. The damping layer 8 is made of polyester sound-absorbing cotton, and the metal layer is made of copper alloy. It can provide a certain support force and can reduce high-frequency noise through its flexible characteristics.

[0033] Two docking structures 4 are provided on the back of the cover plate body 1, and a connecting ring 3 is installed on the bottom of the cover plate body 1 near the front through a fixing piece 2.

[0034] Both the connecting ring 3 and the docking structure 4 are installed to assist the cover plate body 1.

[0035] The magnetic attraction assembly 14 includes a magnetic attraction structure 141 and a connecting structure 142. The connecting structure 142 is connected to the top of the second metal layer 10, and the magnetic attraction structure 141 is installed inside the interface 11.

[0036] The magnetic structure 141 and the connecting structure 142 are attracted to each other. The magnetic structure 141 is a magnet, and the connecting structure 142 is an iron sheet.

[0037] A heat insulation and noise reduction structure 6 is installed at the bottom of the first metal layer 7, and a plurality of sound-absorbing holes 5 are opened at the bottom of the heat insulation and noise reduction structure 6.

[0038] The sound-absorbing hole 5 does not penetrate the heat insulation and noise reduction structure 6, but it can perform preliminary sound absorption and noise reduction.

[0039] The heat insulation and noise reduction structure 6 includes a mating layer 601, a heat insulation layer 602, and a sound absorption layer 603. The mating layer 601 is used to fix the heat insulation and noise reduction structure 6 to the bottom of the first metal layer 7.

[0040] The heat insulation layer 602 can provide heat insulation, while the sound absorption layer 603 provides initial sound absorption.

[0041] The heat insulation layer 602 is glass fiber cotton, and the mating layer 601 is acrylic emulsion adhesive.

[0042] The mating layer 601 ensures the stability of the connection of the thermal insulation and noise reduction structure 6.

[0043] The working principle of the composite noise reduction layer structure for the car cover provided by this utility model is as follows:

[0044] First, a mounting port 12 is opened at the bottom of the cover plate body 1 to install two reinforcing ribs 13. Each reinforcing rib 13 has two mating interfaces 11 at its bottom. Then, the noise reduction structure consisting of the second metal layer 10, the damping layer 8 and the first metal layer 7 can be installed in the mounting port 12 through the magnetic suction component 14, and the magnetic suction component 14 is positioned in the mating interface 11 to ensure a good fit. To enhance installation stability, some glue can be applied at the connection between the second metal layer 10 and the mounting port 12. In actual use, the first metal layer 7 and the second metal layer 10 are used to wrap the damping layer 8 to increase its strength. When noise enters the damping layer 8 through the first metal layer 7, the noise can be propagated, reflected and dispersed in the noise reduction port 9, thus playing a role in noise reduction.

[0045] Compared with related technologies, the composite noise reduction layer structure of the automobile cover plate provided by this utility model has the following beneficial effects:

[0046] To improve the noise reduction effect of the noise reduction structure in the car cover for low and high frequency noise, a mounting port 12 for installing two reinforcing ribs 13 is first opened at the bottom of the cover body 1. Each reinforcing rib 13 has two mating interfaces 11 at its bottom. Then, the noise reduction structure consisting of the second metal layer 10, the damping layer 8 and the first metal layer 7 can be installed in the mounting port 12 through the magnetic suction assembly 14, and the magnetic suction assembly 14 is positioned in the mating interfaces 11 to ensure a good fit. To enhance installation stability, some glue can be applied at the connection between the second metal layer 10 and the mounting port 12. This design uses a multi-layer structure to improve the strength of the noise reduction structure, and at the same time, the noise is eliminated through multiple layers to improve the noise reduction effect for low and high frequencies.

[0047] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A composite noise reduction layer structure for an automobile hood, characterized in that, include: Cover plate body; The mounting port is located at the bottom of the cover plate body. Reinforcing ribs are provided inside the mounting port near both sides. A mating interface is provided at the bottom of the two reinforcing ribs near both ends. A magnetic suction component is installed inside each mating interface. The second metal layer is installed at the bottom of the four magnetic components. A damping layer is provided at the bottom of the second metal layer. Multiple noise reduction ports are opened inside the damping layer. The first metal layer is provided at the bottom of the damping layer.

2. The composite noise reduction layer structure of the automobile cover plate according to claim 1, characterized in that, The back of the cover plate body is provided with two docking structures, and a connecting ring is installed on the bottom of the cover plate body near the front by a fixing piece.

3. The composite noise reduction layer structure of the automobile cover plate according to claim 1, characterized in that, The magnetic assembly includes a magnetic structure and a connecting structure, the connecting structure being connected to the top of the second metal layer, and the magnetic structure being installed inside the interface.

4. The composite noise reduction layer structure of the automobile cover plate according to claim 1, characterized in that, A heat insulation and noise reduction structure is installed at the bottom of the first metal layer, and the bottom of the heat insulation and noise reduction structure has multiple sound-absorbing holes.

5. The composite noise reduction layer structure of the automobile cover plate according to claim 4, characterized in that, The heat insulation and noise reduction structure includes a mating layer, a heat insulation layer, and a sound-absorbing layer. The mating layer is used to fix the heat insulation and noise reduction structure to the bottom of the first metal layer.

6. The composite noise reduction layer structure of the automobile cover plate according to claim 5, characterized in that, The heat insulation layer is made of fiberglass wool, and the bonding layer is made of acrylic emulsion adhesive.

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