A high strength back panel assembly

Abstract

This utility model discloses a high-strength rear shelf assembly, including a shelf body, several reinforcing ribs, a sound-absorbing box, a patch plate, and vibration damping plates. Several reinforcing ribs are evenly distributed on the bottom surface of the shelf body, and the sound-absorbing box is fixedly installed on the surface of the reinforcing ribs. A patch plate is fixedly adhered to the bottom surface of the shelf body, located inside the sound-absorbing box. Several vibration damping plates are fixedly connected between the outer periphery of the patch plate and the inner wall of the sound-absorbing box, and the vibration damping plates are evenly distributed along the circumference of the sound-absorbing box. The vibration damping plates are made of solid spring steel plates, each with a different resonant frequency; the patch plate is preferably a rubber clay pad structure. This structure can achieve primary vibration absorption and noise reduction through the patch plate, and disperse residual vibration energy through the multi-frequency vibration damping plates, achieving multi-level vibration reduction and noise suppression. Simultaneously, the reinforcing ribs improve the overall rigidity, significantly enhancing the durability and quietness of the shelf during vehicle operation.

Description

Technical Field

[0001] This utility model relates to the field of automotive structural technology, specifically to a high-strength rear shelf assembly. Background Technology

[0002] Currently, rear cargo shelves are commonly found in car trunks to support luggage and provide some noise insulation. Existing rear cargo shelves are typically made of molded sheet material or lightweight plastic, and may have limited reinforcing ribs at the bottom to improve local load-bearing capacity. However, existing rear cargo shelves still have the following problems in use: Most existing rear shelf panels use thin-plate structures, which are prone to localized sagging or overall deformation when subjected to vehicle bumps, heavy object impacts, or prolonged use, affecting their service life and load-bearing stability. Although some products have added unidirectional or cross stiffeners to the bottom of the panel, the overall bending stiffness improvement is limited, and fatigue damage may still occur under high loads or prolonged vibration.

[0003] During vehicle operation, impact vibrations from the road surface are transmitted to the vehicle interior through the rear cargo shelf, generating noise. Current technology largely relies on the material's inherent damping properties for simple vibration absorption, lacking effective multi-stage vibration reduction or active noise reduction designs. When the external impact frequency approaches the shelf's natural frequency, resonance can easily occur, leading to increased noise and affecting the quietness of the vehicle interior.

[0004] In summary, existing rear shelf structures generally suffer from insufficient stiffness, susceptibility to resonance noise, and limited vibration damping and noise reduction performance, making it difficult to meet the comprehensive requirements of modern automobiles for high strength, high quietness, and durability. Therefore, there is an urgent need for a high-strength rear shelf assembly with reasonable structural reinforcement, multi-frequency vibration damping, and efficient noise reduction capabilities to overcome the shortcomings of existing technologies. Utility Model Content

[0005] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted by this utility model is as follows: a high-strength rear shelf assembly, which achieves structural reinforcement, multi-band vibration reduction, and noise suppression through the synergistic structural design of reinforcing ribs, sound-absorbing boxes, patch plates, and vibration-damping plates. The overall solution includes: The bottom surface of the shelf body is evenly distributed with several reinforcing ribs to improve the overall bending stiffness. A soundproof box is fixedly installed on the surface of the reinforcing ribs. A patch plate is set inside the soundproof box. The outer periphery of the patch plate is fixedly connected to the inner wall of the soundproof box by several vibration damping plates. The vibration damping plates are evenly distributed in the circumferential direction. This structure achieves overall reinforcement of the shelf body and forms a multi-level vibration reduction and noise reduction path, reducing the transmission of noise during vehicle operation.

[0007] In a preferred example, the vibration damping plate is made of solid spring steel plate and designed as a multi-piece structure with different resonance frequencies.

[0008] Specifically, when the shelf body vibrates, the vibration damping plates of different frequencies will act sequentially at their respective resonant frequencies to achieve multi-band graded energy absorption and vibration attenuation, avoiding noise amplification caused by single-frequency resonance.

[0009] In a preferred example, the patch panel uses a putty pad structure and is fixedly adhered to the bottom surface of the shelf body by adhesive.

[0010] Specifically, the patch can quickly absorb vibration energy when the shelf body is subjected to instantaneous impact, achieving preliminary noise reduction and vibration damping effects.

[0011] In a preferred example, the silencer box is preferably a disc-shaped box structure, and its top surface is kept in a non-contact state with the bottom surface of the shelf body.

[0012] Specifically, this non-contact design reduces the direct transmission of vibrations, while the internal cavity enhances sound energy absorption and attenuation, thereby improving noise reduction performance.

[0013] In a preferred example, the reinforcing ribs are radially distributed along the bottom surface of the shelf body.

[0014] Specifically, the radial layout can effectively disperse load stress and optimize vibration path, providing a good foundation for multi-directional vibration reduction of the soundproof box and vibration damping plate.

[0015] In a preferred example, the thickness of the patch panel is set to 2–5 mm.

[0016] Specifically, this thickness range ensures elastic vibration absorption performance while avoiding excessive weight or softness, thereby achieving a more efficient vibration isolation effect.

[0017] In a preferred example, the patch plate and the damping plate work together. When the shelf body is impacted, the patch plate first absorbs and buffers the transient vibration, and then the damping plate disperses the remaining vibration energy through elastic deformation.

[0018] Specifically, this multi-stage energy dissipation mechanism can quickly attenuate the vibration of the shelf body and reduce noise, significantly improving the quietness and comfort of vehicle operation.

[0019] The beneficial effects achieved by this utility model are as follows: 1. In this utility model, by setting reinforcing ribs on the bottom surface of the shelf body and cooperating with a soundproof box, patch plate and multi-frequency vibration damping plate, the comprehensive effect of structural reinforcement and multi-level vibration reduction and noise reduction is achieved, which effectively improves the overall rigidity of the shelf body and significantly reduces vibration and noise.

[0020] 2. In this utility model, rubber clay patches are used to absorb transient vibration energy, and solid spring steel vibration damping plates with different resonance frequencies are used to suppress and dissipate the remaining vibration energy in segments, avoiding the amplification of noise by single-frequency resonance, so as to realize the vehicle's rapid vibration reduction and noise reduction under multiple working conditions, and improve the comfort and durability of use. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model; Figure 2 This is a schematic diagram of the cross-sectional structure of a silencer box according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the sound-absorbing box and reinforcing rib structure according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the patch plate and vibration damping plate structure according to one embodiment of the present invention.

[0022] Figure label: 100. Shelf body; 110. Reinforcing ribs; 200. Soundproof box; 210. Patch panel; 300. Vibration damping plate. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0024] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0025] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, providing a high-strength rear shelf assembly.

[0026] Combination Figures 1-4 As shown, the present invention provides a high-strength rear shelf assembly, comprising: shelf body 100, several reinforcing ribs 110, soundproof box 200, patch plate 210 and vibration damping plate 300.

[0027] The bottom surface of the shelf body 100 is uniformly provided with several reinforcing ribs 110 to improve the overall rigidity of the shelf body 100 and reduce the possibility of large deformation. A sound-absorbing box 200 is fixedly installed on the surface of the reinforcing ribs 110. This sound-absorbing box 200 is used to isolate and reduce vibration noise generated during vehicle operation. A patch plate 210 is fixedly adhered to the inner side of the sound-absorbing box 200 on the bottom surface of the shelf body 100. This patch plate 210 is used to absorb transient vibration energy and achieve initial vibration reduction.

[0028] The outer periphery of the patch plate 210 is fixedly connected to the inner wall of the silencing box 200 by a number of vibration damping plates 300, one end of each vibration damping plate 300 being fixedly connected to the inner wall of the silencing box 200. The vibration damping plates 300 are evenly distributed along the circumferential direction on the inner side of the silencing box 200 to further disperse vibration energy and reduce noise.

[0029] In this embodiment, the vibration damping plate 300 adopts a solid spring steel plate structure. Its elastic properties enable it to undergo elastic deformation when subjected to vibration impact from the shelf body 100, thereby absorbing and dissipating the remaining vibration energy. To achieve multi-frequency vibration suppression, several vibration damping plates 300 evenly distributed along the circumferential direction are designed with different resonant frequencies. When the shelf body 100 vibrates, the vibration damping plates 300 of different frequencies will act sequentially at their respective resonant frequencies, rapidly attenuating and dispersing vibration energy, avoiding noise amplification caused by single-frequency resonance, and achieving multi-level vibration reduction and noise reduction effects.

[0030] In this embodiment, the patch plate 210 adopts a rubber clay pad structure, which has a soft surface and high damping performance, and can quickly absorb vibration under instantaneous impact. The patch plate 210 is firmly attached to the bottom surface of the shelf body 100 with high-strength adhesive, ensuring that it will not fall off during vehicle bumps and long-term use, while maintaining good vibration reduction and sealing effects.

[0031] In this embodiment, the silencing box 200 is preferably a disc-shaped box structure, forming a closed cavity inside, which can effectively reduce airborne noise. The top surface of the silencing box 200 is kept in a non-contact state with the bottom surface of the shelf body 100 to avoid direct rigid transmission of vibration energy, while ensuring that the silencing cavity has sufficient space for sound energy absorption and damping attenuation. The reinforcing ribs 110 are radially distributed along the bottom surface of the shelf body 100. This layout can ensure the strength of the shelf body 100 while dispersing vibration energy in different directions, which is beneficial for achieving multi-directional vibration reduction and noise reduction in conjunction with the silencing box 200, the patch plate 210, and the vibration damping plate 300.

[0032] In this embodiment, the thickness of the patch plate 210 is preferably 2 to 5 mm. This thickness range can ensure good elastic vibration absorption performance while avoiding the increase in weight or excessive flexibility that would affect the support stability.

[0033] The appropriate thickness design enables the patch 210 to have better vibration isolation effect in the multi-frequency vibration environment of vehicle operation.

[0034] In this embodiment, the patch plate 210 is used in conjunction with the vibration damping plate 300. When the shelf body 100 is subjected to impact or vibration, the patch plate 210 first absorbs and buffers the transient vibration energy, while the vibration damping plate 300 then further disperses the remaining vibration energy through elastic deformation.

[0035] The two work together to quickly eliminate vibrations of the shelf body 100 and reduce noise, improving the quietness and comfort of vehicle operation.

[0036] Working principle and usage process of this utility model: The bottom surface of the shelf body 100 is structurally reinforced by reinforcing ribs 110 to improve overall rigidity and reduce the possibility of large-scale deformation. The patch plate 210 is responsible for absorbing transient vibration energy; the vibration damping plate 300 disperses and dissipates the remaining vibration energy through elastic deformation.

[0037] The inner side of the silencing box 200 has a patch plate 210 made of rubber clay pad material, which can quickly absorb vibration and achieve initial noise reduction when the shelf body 100 is impacted. Multiple vibration damping plates 300 are evenly distributed along the inner circumference of the silencing box 200, with one end fixed to the inner wall of the silencing box 200. The vibration damping plates 300 are made of solid spring steel plates, and each has a different resonant frequency. This allows for segmented suppression of noise from the shelf body 100 at different vibration frequencies, mainly involving physical principles such as resonant interference, energy coupling, and damping dissipation. When the shelf body 100 vibrates, the vibration damping plates 300 of different frequencies act sequentially, achieving rapid attenuation and dispersion of vibration energy, avoiding noise amplification caused by single-frequency resonance.

[0038] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0039] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high strength back panel assembly characterized by, Include: The shelf body (100) is provided with a plurality of reinforcing ribs (110) on the bottom surface, the surface of the reinforcing rib (110) is fixedly installed with a sound box (200), the bottom surface of the shelf body (100) is fixedly pasted with a patch plate (210) inside the sound box (200), the outer periphery of the patch plate (210) and the inner wall of the sound box (200) are provided with a plurality of vibration stop plates (300) fixed to the inner wall surface of the sound box (200), and the plurality of vibration stop plates (300) are uniformly distributed in the circumferential direction inside the sound box (200).

2. The high strength back panel assembly of claim 1, wherein, The vibration stop plate (300) adopts a solid spring steel plate structure, and the plurality of vibration stop plates (300) distributed in the circumferential direction have different resonance frequencies.

3. The high strength back panel assembly of claim 1, wherein, The patch plate (210) adopts a rubber mud gasket structure and is fixedly pasted to the bottom surface of the shelf body (100) by an adhesive.

4. The high strength back panel assembly of claim 1, wherein, The sound box (200) is in a disc-shaped box body structure, and the top surface of the sound box (200) and the bottom surface of the shelf body (100) are in a non-contact state.

5. The high strength back panel assembly of claim 1, wherein, The reinforcing rib (110) is distributed along the bottom surface of the shelf body (100) in the radial direction.

6. The high strength back panel assembly of claim 1, wherein, The thickness of the patch plate (210) is 2-5mm, which is used to improve the vibration isolation performance.

7. The high strength back panel assembly of any of claims 1 to 6, wherein, The patch plate (210) cooperates with the vibration stop plate (300) to quickly eliminate vibration and reduce noise when the shelf body (100) is impacted.

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