Lightweight front bumper

Abstract

The utility model relates to a kind of lightweight front bumper in the technical field of automobile accessories, including bumper body, honeycomb reinforcing rib and foam energy-absorbing block;Bumper body is made of carbon fiber reinforced composite material;Honeycomb reinforcing rib is the pipe of the hexagonal shape of section, is full of the back of bumper body;Foam energy-absorbing block is multiple, evenly arranged in the back of bumper body, and foam energy-absorbing block and the honeycomb reinforcing rib of the back of bumper body are closely adhered;This lightweight front bumper is greatly reduced in weight, reduces the overall weight of vehicle, reduces fuel consumption.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to a lightweight front bumper. Background Technology

[0002] The front bumper, as a crucial safety and aesthetic component of a car, directly impacts the vehicle's overall performance through its performance and design. Traditionally, front and rear bumpers are typically made of metal or heavy plastic. While metal bumpers offer high strength, their weight increases fuel consumption. Some plastic bumpers, though relatively lighter, often require complex internal structures to maintain strength, similarly contributing to their weight. Excessive bumpers force the vehicle to consume more energy during driving, reducing fuel economy and increasing the burden on components such as the suspension system, thus affecting the vehicle's lifespan. Utility Model Content In view of this, this application proposes a lightweight front bumper that significantly reduces weight, thereby reducing the overall weight of the vehicle, lowering fuel consumption, and solving the problems mentioned in the background art.

[0003] This utility model provides the following technical solution: a lightweight front bumper, characterized in that it includes: a bumper body, honeycomb reinforcing ribs and foam energy-absorbing blocks; The bumper body is made of carbon fiber reinforced composite material; The honeycomb-shaped reinforcing ribs are round tubes with a hexagonal cross-section, covering the back of the bumper body; Multiple foam energy-absorbing blocks are evenly distributed on the back of the bumper body, and the foam energy-absorbing blocks are closely attached to the honeycomb-shaped reinforcing ribs on the back of the bumper body.

[0004] In one embodiment of the utility model, the honeycomb-shaped reinforcing ribs are evenly distributed along the width direction of the bumper body, and the honeycomb-shaped reinforcing ribs are integrally formed with the bumper body.

[0005] In one embodiment of the utility model, the foam energy-absorbing block is a cuboid block structure, the material of the foam energy-absorbing block is compressible polyethylene foam, and the number of the foam energy-absorbing blocks is 2-4, which are distributed at intervals along the length direction of the bumper body.

[0006] In one embodiment of the utility model, circular clearance holes are provided at both ends of the bumper body for installing car fog lights.

[0007] In one embodiment of the utility model, the foam energy-absorbing block is connected to the bumper body by a high-strength adhesive.

[0008] In one embodiment of the utility model, a connecting bracket is also included; There are multiple connecting brackets, one end of each connecting bracket is bolted to the bumper body, and the other end is suitable for bolting to the mounting holes on the car body.

[0009] In one embodiment of the utility model, an anti-loosening washer is provided between the mounting hole and the connecting bracket, and the anti-loosening washer is a spring washer.

[0010] In one embodiment of the utility model, a connecting plate extends upward from the top center of the bumper body, and the connecting plate is used to connect the left and right parts of the car bumper.

[0011] In one embodiment of the utility model, the connecting bracket is made of aluminum alloy.

[0012] In one embodiment of the utility model, there are multiple honeycomb reinforcing ribs, which are arranged in a grid pattern along the length and width directions of the bumper body.

[0013] The beneficial effects of this utility model are as follows: By using carbon fiber reinforced composite material to make the bumper body, the carbon fiber reinforced composite material combines lightweight and high strength, which can significantly reduce the weight of the bumper, help reduce the weight of the whole vehicle to improve fuel economy or the range of new energy vehicles, while ensuring the strength of the basic structure; the honeycomb-shaped reinforcing ribs covering the back can enhance the support performance, and evenly distribute the impact force when subjected to force to avoid damage caused by local stress concentration; multiple foam energy-absorbing blocks that are evenly distributed and closely attached to the reinforcing ribs can further improve the collision buffering and energy absorption effect, reduce the impact injury to the vehicle body and occupants in a collision, and the whole design takes into account lightweight, structural strength and safety, which meets the requirements of automotive design.

[0014] Other features and aspects of this application will become clear from the following detailed description of exemplary embodiments with reference to the accompanying drawings. Attached Figure Description

[0015] The accompanying drawings, which are included in and form part of this specification, illustrate exemplary embodiments, features, and aspects of this application together with the specification and serve to explain the principles of this application.

[0016] Figure 1 This diagram illustrates the main structure of a lightweight front bumper according to an embodiment of this application. Figure 2 This image shows a front view of a lightweight front bumper according to an embodiment of this application; Figure 3 A rear view of a lightweight front bumper according to an embodiment of this application is shown; Detailed Implementation Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0017] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model or simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0018] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0019] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0020] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0021] Specific references Figure 1 As a lightweight front bumper of this utility model, the device includes: a bumper body 10, honeycomb reinforcing ribs 21, and foam energy-absorbing blocks 22; the bumper body 10 is made of carbon fiber reinforced composite material; the honeycomb reinforcing ribs 21 are hexagonal round tubes that cover the back of the bumper body 10; there are multiple foam energy-absorbing blocks 22, which are evenly distributed on the back of the bumper body 10, and the foam energy-absorbing blocks 22 are closely attached to the honeycomb reinforcing ribs 21 on the back of the bumper body 10.

[0022] In this example, the honeycomb reinforcing ribs 21 and the bumper body 10 are integrally molded using a molding process, specifically through synchronous processing via compression molding technology, to avoid the risk of structural detachment. The honeycomb reinforcing ribs 21 have a regular hexagonal cross-section and are spaced apart along the width direction of the bumper body 10, with equal spacing between adjacent reinforcing ribs, forming a uniform honeycomb support structure. This structure can disperse and transmit the impact force during a collision in multiple directions, avoiding cracking caused by localized stress concentration in the bumper body and effectively protecting the structural integrity of the bumper body.

[0023] In this example, the foam energy-absorbing block 22 is made of compressible polyethylene foam, which can absorb impact energy through its own compression during a collision, reducing the impact force transmitted to the vehicle body and occupants. The foam energy-absorbing block 22 is designed as a cuboid block structure, with 2-4 blocks selected, depending on the length of the bumper body 10. The foam energy-absorbing blocks 22 are distributed at intervals along the length of the bumper body 10 to ensure that energy-absorbing blocks provide cushioning in different areas of the front of the vehicle when it is impacted.

[0024] Furthermore, the connection between the foam energy-absorbing block 22 and the back of the bumper body 10 uses a high-strength adhesive, specifically a two-component epoxy resin adhesive. During assembly, the adhesive is first evenly applied to the gaps between the honeycomb reinforcing ribs on the back of the bumper body, and then the foam energy-absorbing block is attached to the preset position, ensuring that the energy-absorbing block is in close contact with the reinforcing ribs. This connection method avoids the weight increase caused by bolt connections and ensures that the energy-absorbing block does not fall off during a collision, thus fully utilizing its energy-absorbing function.

[0025] In this example, circular clearance holes are provided at both ends of the bumper body 10. The diameter of the clearance holes is adapted to the installation size of mainstream automotive fog lights on the market. During installation, the fog light holder can be directly fixed to the pre-set screw holes around the clearance holes with bolts, without the need for additional processing of the adaptation structure, which simplifies the assembly process.

[0026] In this example, a connecting plate extends upward from the top center of the bumper body 10. Multiple connecting screw holes are pre-set on its surface. During assembly, it can be fastened to the corresponding interfaces of the left and right parts of the car bumper with bolts to ensure the integrity of the front bumper and the left and right side protection structures of the vehicle body and avoid partial disassembly during a collision.

[0027] In this example, the lightweight front bumper also includes multiple connecting brackets made of aluminum alloy, which has excellent lightweight properties and corrosion resistance. One end of the connecting bracket is fastened to the mounting holes on the back of the bumper body 10 by bolts, while the other end has holes that match the mounting holes on the car body, facilitating fine-tuning during installation and ensuring precise alignment with the vehicle body.

[0028] Furthermore, an anti-loosening washer is provided between the connecting bracket and the mounting hole on the car body. This anti-loosening washer is a spring washer made of 65Mn steel. During assembly, the spring washer is placed on the bolt, and the elastic deformation of the washer generates an anti-loosening preload force to prevent the bolt from loosening due to vibration during vehicle operation, thus ensuring the long-term stability of the connection between the bumper and the car body.

[0029] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A lightweight front bumper, characterized in that, include: The bumper body, honeycomb reinforcing ribs, and foam energy-absorbing blocks; The bumper body is made of carbon fiber reinforced composite material; The honeycomb-shaped reinforcing ribs are round tubes with a hexagonal cross-section, covering the back of the bumper body; The foam energy-absorbing blocks are multiple in number and are evenly distributed on the back of the bumper body, and the foam energy-absorbing blocks are closely attached to the honeycomb-shaped reinforcing ribs on the back of the bumper body.

2. The lightweight front bumper according to claim 1, characterized in that, The honeycomb-shaped reinforcing ribs are evenly distributed along the width direction of the bumper body, and the honeycomb-shaped reinforcing ribs are integrally formed with the bumper body.

3. The lightweight front bumper according to claim 1, characterized in that, The foam energy-absorbing block has a cuboid block structure and is made of compressible polyethylene foam. There are 2-4 foam energy-absorbing blocks, which are spaced apart along the length of the bumper body.

4. The lightweight front bumper according to claim 1, characterized in that, The bumper body has circular clearance holes at both ends for installing car fog lights.

5. The lightweight front bumper according to claim 1, characterized in that, The foam energy-absorbing block is connected to the bumper body by a high-strength adhesive.

6. The lightweight front bumper according to claim 1, characterized in that, It also includes a connecting bracket; There are multiple connecting brackets, one end of each connecting bracket is bolted to the bumper body, and the other end is suitable for bolting to the mounting holes on the car body.

7. The lightweight front bumper according to claim 6, characterized in that, An anti-loosening washer, which is a spring washer, is provided between the mounting hole and the connecting bracket.

8. The lightweight front bumper according to claim 1, characterized in that, A connecting plate extends upward from the top center of the bumper body, and the connecting plate is used to connect the left and right parts of the car bumper.

9. The lightweight front bumper according to claim 7, characterized in that, The connecting bracket is made of aluminum alloy.

10. The lightweight front bumper according to claim 2, characterized in that, The honeycomb-shaped reinforcing ribs are multiple and arranged in a grid pattern along the length and width of the bumper body.

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