Plastic part of automobile plastic chassis
By installing protective components and heat dissipation holes on the car's plastic chassis, the problem of limit rod breakage was solved, improving safety and heat dissipation efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN WOLFF AUTO PARTS MFG CO LTD
- Filing Date
- 2025-06-23
- Publication Date
- 2026-05-01
AI Technical Summary
The limit bars of existing automotive plastic chassis are prone to breakage when they come into contact with road obstacles, causing the outer shell of the crash barrier to fall off.
A protective component is installed at the bottom of the plastic part, including a support frame, spring sheet and protective plate. The rubber protective cover absorbs the impact force and dissipates heat through heat dissipation holes.
It effectively prevents the limit rod from breaking, improving safety, and effectively dissipates heat through the heat dissipation holes, enhancing both safety and heat dissipation efficiency.
Smart Images

Figure CN224184228U_ABST
Abstract
Description
A plastic part for an automotive plastic chassis Technical Field
[0001] This utility model relates to the field of automotive plastic products technology, specifically a plastic part for an automotive plastic chassis. Background Technology
[0002] Currently, some car chassis are made of plastic, and various plastic parts with different functions are also installed on the plastic chassis.
[0003] A search revealed that patent application number 202420247399.2 discloses a plastic part for an automotive plastic chassis, relating to the field of plastic parts technology. The plastic part includes a main body, with buffer and anti-collision components provided on both sides of the bottom of the main body. A first heat dissipation vent is provided near the center of the bottom of the main body, and two second heat dissipation vents are provided on one side of the bottom of the main body.
[0004] Although the plastic parts of the car's plastic chassis can prevent road obstacles from impacting the chassis by using cushioning and anti-collision components, and can dissipate heat from the chassis through cooling vents No. 1, No. 2, and No. 3, the limiting rods of the plastic parts of the car's plastic chassis are prone to breakage when they come into contact with road obstacles. Consequently, the circular plate cannot limit the anti-collision shell, causing the anti-collision shell to fall off.
[0005] Therefore, we propose a plastic component for an automotive plastic chassis. Summary of the Invention
[0006] To address the shortcomings of existing technologies, this utility model provides a plastic component for an automotive plastic chassis, which solves the problem that when the limiting rod of the existing device comes into contact with road obstacles, the limiting rod is prone to breakage, and the circular plate is unable to limit the anti-collision shell, causing the anti-collision shell to fall off.
[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a plastic part for an automotive plastic chassis, comprising a plastic part body, a protective component provided at the bottom of the plastic part body, a protective cover provided between the plastic part body and the protective component, and the protective cover being fixedly installed on the bottom surface of the plastic part body;
[0008] The protective assembly includes a support frame, spring sheets, and a protective plate. The support frame is fixedly installed at the edge of the bottom surface of the plastic part body. Spring sheets are evenly distributed and fixedly installed around the bottom surface of the support frame. The bottom surface of the spring sheets is fixedly installed on the side wall of the protective plate. The protective plate is fixedly installed on the bottom surface of the protective cover.
[0009] Preferably, the protective cover is made of rubber, and the protective cover is hollow inside with an opening at the top. The rubber material has the characteristics of high elasticity, viscoelasticity, wear resistance and corrosion resistance. The rubber can deform under the action of external force and can quickly return to its original shape after the external force is removed.
[0010] Preferably, the top surface of the plastic part body is provided with heat dissipation grooves arranged in a linear array, and the side walls around the protective cover are provided with uniformly distributed heat dissipation holes. Heat in the car's plastic chassis can be dissipated through the heat dissipation grooves. When the car is in motion, external air enters the interior of the protective cover through the heat dissipation holes on the front side, and then the air is discharged through the heat dissipation holes on the rear side. During this process, the flowing air carries away the heat dissipated from the heat dissipation grooves and the heat inside the plastic part body.
[0011] Preferably, the four corners of the top surface of the plastic part body are provided with first mounting holes, so that bolts can pass through the first mounting holes.
[0012] Preferably, the four corners of the top surface of the support frame are provided with second mounting holes of the same specifications and corresponding positions as the first mounting holes, wherein bolts pass through the second mounting holes and the first mounting holes in sequence to facilitate the installation of the plastic part body on the automotive plastic chassis.
[0013] This utility model provides a plastic part for an automotive plastic chassis. It has the following beneficial effects:
[0014] 1. The plastic parts of the car's plastic chassis come into contact with obstacles on the road through the protective plate. The obstacle then squeezes the protective plate, compressing the protective cover and spring sheet to absorb the impact force of the obstacle on the car's plastic chassis. The protective cover and spring sheet connect the protective plate, which can prevent the protective plate from falling off. It is safer to use and solves the problem that when the limit rod of the existing device comes into contact with the road obstacle, the limit rod is prone to breakage, and then the round plate cannot limit the anti-collision shell, resulting in the anti-collision shell falling off.
[0015] 2. The plastic parts of the car's plastic chassis, through the heat dissipation holes opened on the side wall of the heat dissipation holes, allow external air to circulate inside the protective cover. In this process, the flowing air carries away the heat emitted from the heat dissipation slots and the heat inside the main body of the plastic parts, thereby achieving the purpose of heat dissipation for the car's plastic chassis. Attached Figure Description
[0016] Figure 1 is a schematic diagram of the structure of this utility model;
[0017] Figure 2 is a schematic diagram of the bottom structure of this utility model;
[0018] Figure 3 is a schematic diagram of the disassembled structure of this utility model;
[0019] Figure 4 is a schematic diagram of the anti-collision component structure of this utility model.
[0020] In the diagram: 1. Main body of plastic part; 11. Heat dissipation groove; 12. First mounting hole; 2. Protective component; 21. Support frame; 211. Second mounting hole; 22. Spring sheet; 23. Protective plate; 3. Protective cover; 31. Heat dissipation hole. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] Example 1, as shown in Figures 1-4: includes a plastic body 1, a protective component 2 at the bottom of the plastic body 1, and a protective cover 3 between the plastic body 1 and the protective component 2. The protective cover 3 is fixedly installed on the bottom surface of the plastic body 1. The protective component 2 includes a support frame 21, spring sheets 22, and a protective plate 23. The support frame 21 is fixedly installed at the edge of the bottom surface of the plastic body 1. Spring sheets 22 are evenly distributed and fixedly installed around the bottom surface of the support frame 21. The bottom surface of the spring sheets 22 is fixedly installed on the side wall of the protective plate 23. The protective plate 23 is fixedly installed on the bottom surface of the protective cover 3. The protective cover 3 is made of rubber, hollow inside, and has an opening at the top. When the protective plate 23 comes into contact with an obstacle on the road, the obstacle squeezes the protective plate 23, compressing the protective cover 3 and the spring sheets 22 to absorb the impact force of the obstacle on the plastic chassis of the car. The protective cover 3 and the spring sheets 22 connect the protective plate 23, which can prevent the protective plate 23 from falling off, making it safer to use.
[0023] Example 2, as shown in Figures 1-4: The top surface of the plastic body 1 is provided with heat dissipation grooves 11 arranged in a linear array. The side walls of the protective cover 3 are provided with uniformly distributed heat dissipation holes 31. The four corners of the top surface of the plastic body 1 are provided with first mounting holes 12. The four corners of the top surface of the support frame 21 are provided with second mounting holes 211 of the same specifications and corresponding positions as the first mounting holes 12. Through the heat dissipation holes 31 on the side walls of the heat dissipation holes 31, external air can circulate inside the protective cover 3. In this process, the flowing air carries away the heat emitted from the heat dissipation grooves 11 and the heat inside the plastic body 1, thereby achieving the purpose of heat dissipation for the automotive plastic chassis.
[0024] The working principle and usage process of this utility model: When using the plastic parts of this automotive plastic chassis, the main body 1 of the plastic parts can be installed on the automotive plastic chassis by passing bolts through the second mounting hole 211 and the first mounting hole 12 in sequence. When the car is driving, the protective plate 23 comes into contact with obstacles on the road. Then the obstacles squeeze the protective plate 23, causing the protective cover 3 and the spring plate 22 to be compressed, thereby absorbing the impact force of the obstacles on the automotive plastic chassis. At the same time, external air enters the interior of the protective cover 3 through the heat dissipation hole 31 on the front side, and then the air is discharged through the heat dissipation hole 31 on the rear side. In this process, the flowing air carries away the heat emitted from the heat dissipation groove 11 and the heat inside the main body 1 of the plastic parts, which can dissipate heat from the automotive plastic chassis.
[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A plastic part for an automotive plastic chassis, comprising a plastic part body (1), characterized in that: A protective component (2) is provided at the bottom of the plastic body (1), and a protective cover (3) is provided between the plastic body (1) and the protective component (2). The protective cover (3) is fixedly installed on the bottom surface of the plastic body (1). The protective component (2) includes a support frame (21), spring sheets (22) and a protective plate (23). The support frame (21) is fixedly installed at the edge of the bottom surface of the plastic body (1). Spring sheets (22) are evenly distributed and fixedly installed around the bottom surface of the support frame (21). The bottom surface of the spring sheets (22) is fixedly installed on the side wall of the protective plate (23). The protective plate (23) is fixedly installed on the bottom surface of the protective cover (3).
2. The plastic part of an automotive plastic chassis according to claim 1, characterized in that: The protective cover (3) is made of rubber, and the interior of the protective cover (3) is hollow and has an opening at the top.
3. The plastic component of an automotive plastic chassis according to claim 1, characterized in that: The top surface of the plastic body (1) is provided with heat dissipation grooves (11) arranged in a linear array, and the side walls of the protective cover (3) are provided with heat dissipation holes (31) evenly distributed.
4. The plastic component of an automotive plastic chassis according to claim 1, characterized in that: The plastic body (1) has first mounting holes (12) at the four corners of its top surface.
5. The plastic part of an automotive plastic chassis according to claim 4, characterized in that: The support frame (21) has four corners on its top surface with second mounting holes (211) that are the same size as the first mounting hole (12) and are in the same position.
Citation Information
Patent Citations
Plastic part of automobile plastic chassis
CN221819996U