High-strength fender

Abstract

The utility model discloses a high strength fender, including the board body, the edge area of board body is equipped with the mounting lug board connected with the car body, the board body comprises surface composite material layer, metal base plate and shock attenuation interlayer gradually from outside to inside, the inboard of metal base plate is equipped with honeycomb reinforcing rib structure, the honeycomb reinforcing rib structure is composed of the periodic arrangement of multiple hexagonal unit, is connected through the common edge between adjacent hexagonal unit, the shock attenuation interlayer is filled in the unit clearance of honeycomb reinforcing rib structure, and is bonded with metal base plate and fixed. The utility model discloses a high strength fender, through the synergies of honeycomb reinforcing rib structure and composite material, has improved the impact resistance and structural strength of fender significantly, the shock attenuation interlayer design effectively inhibits the vibration noise, improves the driving comfort, has lightweight, corrosion -resistant and other advantages simultaneously, prolongs the life.

Description

Technical Field

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

[0002] The fender is the outer body panel that covers the wheels. It is named after the shape and position of this part on old cars, which resembles a bird's wing. According to the installation position, it is divided into front fender and rear fender. The front fender is installed at the front wheel.

[0003] Traditional fenders are mostly made of stamped steel plates, which has problems such as heavy weight and susceptibility to corrosion. To improve corrosion resistance, multiple anti-corrosion treatments such as electrophoresis and spraying are usually required on the surface of the steel plate, which leads to complex production processes and increased costs.

[0004] In recent years, to reduce vehicle weight, some models have begun to use aluminum alloy or plastic materials for their fenders. While aluminum alloy fenders are lighter, they are prone to dents and deformation when hit by stones or minor collisions, and are difficult to repair. Plastic fenders, on the other hand, are corrosion-resistant and lightweight, but lack rigidity and are prone to vibration due to airflow at high speeds, which can even cause resonance and abnormal noises with the vehicle body, affecting driving comfort.

[0005] Therefore, we propose a high-strength fender. Utility Model Content (a) Technical problems to be solved

[0006] In view of the shortcomings of the prior art, this utility model provides a high-strength fender, which has the advantages of improving the strength of the panel and extending its service life, and can effectively solve the problems in the background art. (II) Technical Solution

[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a high-strength fender, comprising a plate body, wherein the edge region of the plate body is provided with mounting lugs for connection with the vehicle body, and the plate body comprises, from the outside to the inside, a surface composite material layer, a metal substrate and a shock-absorbing interlayer; the inner side of the metal substrate is provided with a honeycomb reinforcing rib structure, the honeycomb reinforcing rib structure being composed of multiple hexagonal units arranged periodically, and adjacent hexagonal units being connected by a common edge; the shock-absorbing interlayer fills the unit gaps of the honeycomb reinforcing rib structure and is bonded and fixed to the metal substrate.

[0008] Preferably, the hexagonal unit of the honeycomb reinforcing rib structure has a side length of 8-15mm and a unit wall thickness of 1.2-2.5mm.

[0009] Preferably, the shock-absorbing interlayer is made of silicone material, and its thickness is 2 / 3 of the height of the honeycomb reinforcing rib structural unit.

[0010] Preferably, the composite material layer is a glass fiber reinforced plastic layer with a thickness of 0.5-1.2 mm.

[0011] Preferably, the metal substrate is an aluminum alloy plate with a thickness of 1.0-2.0 mm.

[0012] Preferably, the glass fiber in the glass fiber reinforced plastic layer is a continuous fiber woven fabric with 2-4 layers and a single layer surface density of 200-400 g / m². (III) Beneficial Effects

[0013] Compared with the prior art, the present invention provides a high-strength fender with the following advantages: 1. This high-strength fender, by setting a honeycomb reinforcing rib structure on the inner side of the metal substrate, utilizes the periodic arrangement of hexagonal units and the shared edge connection method to form a stable mesh support system, thereby improving the bending stiffness and impact resistance of the fender. This structure can effectively disperse stress when subjected to external forces, avoiding local deformation or cracking. 2. This high-strength fender adopts a composite structure of aluminum alloy metal substrate and glass fiber reinforced plastic layer, which significantly reduces weight while ensuring strength.

[0014] 3. This high-strength fender has a shock-absorbing interlayer filled in the unit gaps of a honeycomb reinforcing rib structure. It uses silicone material and controls the filling thickness to be 2 / 3 of the unit height. It can effectively absorb and attenuate high-frequency vibrations during driving, and avoid resonance and abnormal noise with the vehicle body, thereby improving driving comfort and NVH (noise, vibration and harshness) performance.

[0015] 4. This high-strength fender has a surface composite material layer made of glass fiber reinforced plastic (such as PA6 resin-based continuous fiber woven fabric), which has excellent resistance to salt spray corrosion, UV aging and gravel impact. It does not require additional anti-corrosion coating, reduces production processes and maintenance costs, and is suitable for harsh climates and complex road conditions.

[0016] 5. This high-strength fender features a honeycomb reinforcing rib structure that is fixed to a metal substrate by laser welding. The shock-absorbing interlayer is cured by liquid silicone injection, and the composite material layer is formed by in-mold injection molding. The process is well-connected, suitable for mass production, and the overall cost is lower than that of traditional multi-layer coated steel plates or all-carbon fiber solutions. Attached Figure Description

[0017] Figure 1 This is a front structural diagram of a high-strength fender according to the present invention.

[0018] Figure 2 This is a schematic diagram of the back structure of a high-strength fender according to the present invention.

[0019] Figure 3 This is a partial schematic diagram of the layered structure of a high-strength fender according to the present invention.

[0020] Figure 4 This is a schematic diagram of the structure of a hexagonal unit in a high-strength fender according to the present invention.

[0021] In the diagram: 1. Plate; 2. Mounting ear plate; 3. Composite material layer; 4. Metal substrate; 5. Shock-absorbing interlayer; 6. Honeycomb reinforcing rib structure; 7. Hexagonal unit. Detailed Implementation

[0022] To make the technical solution and advantages of this utility model clearer, the high-strength fender of this utility model will be specifically described below with reference to the accompanying drawings. It should be noted that the following embodiments are only used to explain this utility model, and not to limit the scope of protection of this utility model. Example

[0023] like Figure 1-4 As shown, this embodiment provides a high-strength fender, comprising: 1. Overall Structure Plate 1: The main body is an arc-shaped structure, covering the area above the wheel, with mounting ears 2 (such as) on the edge for connection to the vehicle body. Figure 1 Bolt holes are provided on the ear plate, which is then fixed to the side panel of the vehicle body with bolts.

[0024] Layered structure: Plate 1 consists of the following layers from the outside to the inside: Surface composite material layer 3: 0.8mm thick glass fiber reinforced plastic layer (fiber is continuous woven fabric, 2 layers, surface density 300g / m², matrix is ​​PA6 resin).

[0025] Metal substrate 4: 1.5mm thick aluminum alloy plate, with a honeycomb reinforcing rib structure 6 fixed on the inside by laser welding.

[0026] The shock-absorbing interlayer 5 is made of silicone material (Shore hardness 60A), which is filled in the unit gaps of the honeycomb reinforcing rib structure 6. The filling thickness is 2 / 3 of the unit height (honeycomb unit height is 10mm, silicone layer thickness is 6.5mm).

[0027] 2. Honeycomb-shaped reinforcing rib structure 6 It consists of periodically arranged hexagonal units 7, each with a side length of 10mm and a wall thickness of 1.8mm. Adjacent units are connected by sharing a side to form an overall mesh structure.

[0028] 3. Manufacturing process Step 1: The aluminum alloy sheet is stamped into the initial shape of the fender; Step 2: Fix the prefabricated honeycomb reinforcing rib structure 6 to the inside of the metal substrate 4 by laser welding; Step 3: Inject liquid silicone into the gaps of the honeycomb unit and cure at room temperature to form the shock-absorbing interlayer 5; Step 4: The glass fiber woven fabric and PA6 resin are bonded to the outside of the metal substrate 4 through an in-mold injection molding process (temperature 240℃, pressure 60MPa) to form a surface composite material layer 3.

[0029] Compared to traditional steel fenders, this invention significantly improves the impact resistance and structural strength of the fender through the synergistic effect of the honeycomb reinforcing rib structure and composite materials; the shock-absorbing sandwich design effectively suppresses vibration noise and improves driving comfort; at the same time, it has advantages such as lightweight and corrosion resistance, extending its service life.

[0030] It should be noted that, in this document, relational terms such as first and second (number one, number two), etc., are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A high-strength fender, comprising a panel (1), wherein the edge region of the panel (1) is provided with a mounting lug (2) for connection with the vehicle body, characterized in that: The plate (1) consists of a surface composite material layer (3), a metal substrate (4), and a shock-absorbing interlayer (5) from the outside to the inside. The inner side of the metal substrate (4) is provided with a honeycomb reinforcing rib structure (6), which is composed of multiple hexagonal units (7) arranged periodically, and adjacent hexagonal units (7) are connected by a common edge. The shock-absorbing interlayer (5) fills the unit gaps of the honeycomb reinforcing rib structure (6) and is bonded and fixed to the metal substrate (4).

2. A high-strength fender according to claim 1, characterized in that: The hexagonal unit (7) of the honeycomb reinforcing rib structure (6) has a side length of 8-15mm and a unit wall thickness of 1.2-2.5mm.

3. A high-strength fender according to claim 1, characterized in that: The shock-absorbing interlayer (5) is made of silicone material, and its thickness is 2 / 3 of the height of the honeycomb reinforcing rib structure (6) unit.

4. A high-strength fender according to claim 1, characterized in that: The composite material layer (3) is a glass fiber reinforced plastic layer with a thickness of 0.5-1.2 mm.

5. A high-strength fender according to claim 1, characterized in that: The metal substrate (4) is an aluminum alloy plate with a thickness of 1.0-2.0 mm.

6. A high-strength fender according to claim 4, characterized in that: The glass fiber in the glass fiber reinforced plastic layer is a continuous fiber woven fabric with 2-4 layers and a single layer surface density of 200-400 g / m².

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