High-strength protective plate for vehicle

Abstract

The utility model relates to the technical field of automobile parts, in particular to a high-strength protective plate for an automobile, which comprises a first protective plate and a second protective plate which are hinged front and back, the first protective plate comprises a top support framework layer, a middle buffer layer and a bottom wear-resistant layer, the middle buffer layer and the bottom wear-resistant layer are sequentially arranged on the lower portion of the top support framework layer from top to bottom, the bottom wear-resistant layer is replaceable, and the middle buffer layer is elastic and compressible. Densely-distributed honeycomb ribs are arranged on the top supporting framework layer, a cavity is defined by the honeycomb ribs, and a sound insulation and absorption unit is arranged in the cavity; the hexagonal structures of the honeycomb ribs are vertically arranged on the supporting framework layer, and the sound insulation and absorption units are filled with light soft particles; the first protective plate and the second protective plate are connected in a hinged mode, and disassembly and assembly are convenient; the honeycomb rib structure realizes lightweight design, and the whole protective plate can bear large impact force and does not deform; the middle buffer layer absorbs energy and buffers, and the impact force is obviously weakened; the bottom wear-resistant layer can be independently detached and replaced without replacing the whole protective plate; the sound insulation performance is good, and the vehicle driving comfort is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of automotive components, in particular to a high-strength vehicle-use guard plate. Background Art

[0002] During the daily operation of vehicles, they face many external impacts and collision risks, and key parts at the bottom of the vehicle are easily damaged by impacts, scratches, etc. from road stones. In this situation, higher requirements are put forward for the protection components of automobiles. The guard plates used in some automobiles are not strong enough, and are prone to deformation and cracking during use, having problems such as being easily damaged and insufficient impact resistance, and cannot effectively protect automotive components; although some guard plates have a certain strength, they are relatively heavy, increasing the overall weight of the vehicle, and thus affecting the fuel economy or power consumption of the vehicle. In addition, they also have the disadvantage of insufficient sound insulation performance. Content of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a new type of high-strength vehicle-use guard plate.

[0004] To solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0005] A high-strength vehicle-use guard plate includes a first guard plate and a second guard plate that are hinged front and back. The first guard plate includes a top support skeleton layer, a middle buffer layer and a bottom wear-resistant layer that are arranged in sequence from top to bottom. The bottom wear-resistant layer is replaceable. The middle buffer layer is in an elastic and compressible state. The top support skeleton layer is provided with dense honeycomb ribs. Cavities are formed among the honeycomb ribs, and sound insulation and sound absorption units are arranged in the cavities.

[0006] Further, the side length L of the hexagonal structural unit cell of the honeycomb rib is 20 mm to 35 mm, and it is vertically arranged on the support skeleton layer.

[0007] Further, the sound insulation and sound absorption unit is filled with light soft particles, and the particle size of the light soft particles is 1 mm to 3 mm.

[0008] Further, both the first guard plate and the second guard plate are provided with screw and bolt mounting holes that penetrate up and down.

[0009] Further, a number of rows of stamping reinforcing ribs are arranged on the second guard plate.

[0010] Further, the thickness of the top support skeleton layer > the thickness of the middle buffer layer > the thickness of the bottom wear-resistant layer.

[0011] Further, the first guard plate and the second guard plate are connected by a hinge.

[0012] Further, the bottom wear-resistant layer and the middle buffer layer are detachably connected.

[0013] Furthermore, one middle buffer layer and one bottom wear-resistant layer are respectively arranged under the first protection plate and the second protection plate.

[0014] Furthermore, the material density of the first protection plate is lower than that of the second protection plate.

[0015] The beneficial effects of adopting the technical solution of the present utility model are as follows:

[0016] 1. For the high-strength vehicle protection plate of the present utility model, the first protection plate and the second protection plate are connected in a hinged manner, which is convenient for disassembly and assembly. When maintenance is required, only one of the protection plates can be opened and turned down based on the non-detached protection plate, without the need to remove the whole, saving working hours.

[0017] 2. For the high-strength vehicle protection plate of the present utility model, a honeycomb rib structure is provided to achieve lightweight design, enabling the whole protection plate to withstand a large impact force without deformation; the middle buffer layer undergoes elastic deformation under the impact force, playing a role in energy absorption and buffering, significantly weakening the impact force; the most easily worn bottom wear-resistant layer can be detached and replaced separately without replacing the whole protection plate.

[0018] 3. For the high-strength vehicle protection plate of the present utility model, a sound insulation and sound absorption unit is provided, significantly improving the sound insulation performance of the protection plate and enhancing the comfort of driving the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model, and those of ordinary skill in the art can obtain other drawings based on these drawings without creative efforts.

[0020] Figure 1 is the exploded structure schematic diagram of the present utility model;

[0021] Figure 2 is the three-dimensional structure schematic diagram of the present utility model;

[0022] Figure 3 is Figure 2 the enlarged schematic diagram at A in

[0023] Figure 4 is Figure 2 the sectional structure schematic diagram in the B-B direction in

[0024] Figure 5 is Figure 4 the enlarged schematic diagram at C in

[0025] Figure 6This is a schematic structural diagram of the sound insulation and absorption unit in the present utility model;

[0026] In the figure: 1: The first protective plate; 1a: The top support skeleton layer; 1a-1: Honeycomb ribs; 2: The second protective plate; 2a: Stamped reinforcing ribs; 3: The middle buffer layer; 4: The bottom wear-resistant layer; 5: The sound insulation and absorption unit; 5a: Lightweight soft particles. Specific embodiments

[0027] Now, the present utility model will be further described in detail with reference to the accompanying drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, so they only show the components related to the present utility model. The present utility model is described in detail using structural schematic diagrams, etc. The schematic diagrams are only examples and should not limit the scope of protection of the present utility model here.

[0028] Please refer to Figures 1 to 6 , a high-strength vehicle-use protective plate, an embodiment, and the technical solution adopted is as follows: It includes a first protective plate 1 and a second protective plate 2 that are hinged to each other front and back. The first protective plate 1 includes a top support skeleton layer 1a, a middle buffer layer 3 and a bottom wear-resistant layer 4 arranged in sequence from top to bottom below it. The thickness of the top support skeleton layer 1a > the thickness of the middle buffer layer 3 > the thickness of the bottom wear-resistant layer 4. The bottom wear-resistant layer 4 is replaceable, enabling it to be individually disassembled and replaced after wear without replacing the entire protective plate. The middle buffer layer 3 is in an elastic and compressible state. Dense honeycomb ribs 1a-1 are arranged on the top support skeleton layer 1a. A cavity is formed within the honeycomb ribs 1a-1, and a sound insulation and absorption unit 5 is arranged within the cavity to enhance the sound insulation performance of the protective plate.

[0029] The side length L of the hexagonal structural unit cell of the honeycomb ribs 1a-1 is 20 mm to 35 mm, and it is vertically arranged on the support skeleton layer 1a. This structure can greatly improve the compressive strength of the protective plate while reducing the weight. According to the honeycomb structure principle, when this structure bears vertical pressure, the force will be dispersed to the surrounding honeycomb walls, enabling the entire protective plate to withstand a large impact force without deformation, constructing a stable internal support structure, and significantly enhancing the overall rigidity and anti-bending ability of the protective plate.

[0030] Specifically, one middle buffer layer 3 and one bottom wear-resistant layer 4 are provided under each of the first protective plate 1 and the second protective plate 2. The middle buffer layer 3 realizes the function of energy absorption and buffering. It is made of a polymer material with high elasticity and impact resistance, and can deform to absorb a large amount of impact energy when being impacted, significantly weakening the impact force and reducing the damage to the vehicle body.

[0031] The sound insulation and absorption units 5 correspond one-to-one with the honeycomb cavities. The sound insulation and absorption units 5 are filled with lightweight soft particles 5a, which can be made of polymer such as polyurethane foam particles and have a porous structure. When sound waves enter the particulate material, it will cause the air in the particle voids to vibrate. Due to the friction between the air and the particle wall surface, and the viscous loss during the continuous compression and expansion of the air in the voids, the sound energy is converted into heat energy and consumed, thus achieving the sound absorption effect. The elastic collisions between these particles and between the particles and the surrounding medium can effectively prevent the propagation of sound waves. When sound waves hit the particle accumulation, the particles will displace and vibrate under the pressure of the sound waves, but the transmission of this vibration will be weakened by the complex interactions between the particles, making it difficult for sound waves to penetrate the particle accumulation layer and continue to propagate. The particle size directly affects the packing density and void structure of the particles. The preferred particle size range of the lightweight soft particles 5a is 1 mm to 3 mm; their shapes are diverse, which can be spherical or regular polygonal. After testing, the higher the filling density of the lightweight soft particles 5a in the sound insulation and absorption unit 5, the more enhanced the sound absorption effect will be to a certain extent.

[0032] The first protective plate 1 and the second protective plate 2 are connected by hinges. Both are provided with screw and bolt mounting holes penetrating up and down for fixed connection with the vehicle body. When maintenance is required, only one of the protective plates can be opened and flipped down based on the non-removed protective plate, without the need to remove the whole, saving working hours.

[0033] The material density of the first protective plate 1 is lower than that of the second protective plate 2. A number of rows of stamping ribs 2a are provided on the second protective plate 2. The ribs 2a are formed on the surface of the stamping part, which can significantly improve the bending and torsion resistance of the part. By reasonably designing the layout position and concave-convex depth of the ribs 2a, the strength of the stamping part of the second protective plate 2 can be greatly improved without increasing the overall thickness of the material.

[0034] In a further optimized solution, the bottom wear-resistant layer 4 and the middle buffer layer 3 are detachably connected. The specific connection methods are one or more of bolt connection, snap connection and tenon and mortise connection. The bottom wear-resistant layer 4 is made of high-strength alloy material, which has high hardness and wear resistance, and can effectively resist the direct impact and scratching of external objects. The most easily worn bottom wear-resistant layer 4 can be separately disassembled and replaced without replacing the whole protective plate.

[0035] During use, when the vehicle is running and a stone hits the protective plate, the bottom wear-resistant layer 4 resists the impact and scratching of the stone and other objects. The middle buffer layer 3 undergoes elastic deformation under the impact force, playing a role in energy absorption and buffering. The honeycomb-shaped strengthening structure honeycomb ribs 1a-1 of the support skeleton layer 1a keep the shape of the protective plate stable. A high-strength vehicle protective plate of the present utility model has the advantages of high structural strength, strong anti-deformation ability, convenient installation and maintenance, and the bottom plate can be separately disassembled and replaced.

[0036] The above are only the preferred specific embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto. It should be noted that for those of ordinary skill in the art, any changes, modifications or additions made without departing from the concept of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A high-strength vehicle guard plate, characterized in that: It includes a first guard plate (1) and a second guard plate (2) which are hinged front and back. The first guard plate (1) includes a top support skeleton layer (1a), a middle buffer layer (3) and a bottom wear-resistant layer (4) which are arranged in sequence from top to bottom. The bottom wear-resistant layer (4) is replaceable. The middle buffer layer (3) is in an elastic compressible state. Dense honeycomb ribs (1a-1) are arranged on the top support skeleton layer (1a). Cavities are formed among the honeycomb ribs (1a-1), and a sound insulation and sound absorption unit (5) is arranged in the cavities.

2. The high-strength vehicle fender according to claim 1, wherein: The side length L of the hexagonal structure unit cell of the honeycomb rib (1a-1) is 20 mm to 35 mm, and it is vertically arranged on the support skeleton layer (1a).

3. A high-strength vehicle guard plate according to claim 1, characterized in that: The sound insulation and sound absorption unit (5) is filled with light soft particles (5a), and the particle size of the light soft particles (5a) is 1 mm to 3 mm.

4. A high-strength vehicle fender according to claim 1, characterized in that: Both the first guard plate (1) and the second guard plate (2) are provided with screw and bolt mounting holes penetrating up and down.

5. A high-strength vehicle guard plate according to claim 1, characterized in that: A number of rows of stamping reinforcing ribs (2a) are arranged on the second guard plate (2).

6. The high-strength vehicle fender according to claim 1, wherein: The thickness of the top support skeleton layer (1a) > the thickness of the middle buffer layer (3) > the thickness of the bottom wear-resistant layer (4).

7. A high-strength vehicle fender according to claim 1, characterized in that: The first guard plate (1) and the second guard plate (2) are connected by a hinge.

8. The high-strength vehicle guard plate according to claim 1, wherein: The bottom wear-resistant layer (4) and the middle buffer layer (3) are detachably connected.

9. The high-strength vehicle guard plate according to claim 1, characterized in that: One middle buffer layer (3) and one bottom wear-resistant layer (4) are respectively arranged under the first guard plate (1) and the second guard plate (2).

10. A high-strength vehicle guard plate according to any one of claims 1 to 9, characterized in that: The material density of the first guard plate (1) is lower than that of the second guard plate (2).

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