Automobile plastic parts
By designing an outer shell, buffer grooves, and buffer pads, combined with a high-rigidity inner shell and a high-tensile-strength protective layer, the deformation problem of automotive plastic parts during extrusion was solved, reducing production costs and improving performance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WENZHOU YUTE TECH CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-06-19
AI Technical Summary
Existing automotive plastic parts are prone to excessive deformation and cracking when subjected to pressure, and existing technologies increase production costs through multiple functional coatings.
The design incorporates an outer shell, a buffer groove, and a buffer pad. The inner shell is more rigid than the outer shell, and a protective layer is applied to the surface of the outer shell. The inner shell and the outer shell are detachably connected by fastening screws. The buffer pad is made of intumescent thermoplastic polyurethane material, and the protective layer is made of an elastomer coating generated by the reaction of isocyanate and amino compounds.
It improves the cushioning and pressure resistance of automotive plastic parts, avoids excessive deformation, and reduces production costs. At the same time, it has excellent properties such as high tensile strength, good flexibility, strong wear resistance, aging resistance, and corrosion resistance. The surface is easy to clean and does not require multiple functional coatings.
Smart Images
Figure CN224375522U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, and more specifically, to automotive plastic parts. Background Technology
[0002] Automotive plastic parts are product accessories made of plastic used in automobiles. Generally speaking, automotive plastic parts refer to all plastic parts and components other than the automobile frame, collectively known as automotive plastic parts.
[0003] Currently, although commonly used automotive plastic parts have pressure resistance, they are prone to cracking due to excessive deformation. In order to extend their service life, multiple functional coatings are applied to their surface, which increases production costs. For example, the automotive plastic part with pressure resistance disclosed in CN219312698U includes an automotive plastic part body, a convex surface, a concave surface, a first reinforcing rib, and a second reinforcing rib. The convex surface is provided on the front side of the automotive plastic part body, the concave surface is provided on the back side of the automotive plastic part body, and the surface of the concave surface is provided with a reinforcing groove.
[0004] As can be seen from the above-disclosed scheme, the main body of the automotive plastic part increases its compressive strength through the first and second compressive layers, and then supports it through reinforcing ribs, the first reinforcing rib and the second reinforcing rib. However, the supporting area is limited, which makes the unsupported parts easy to break due to excessive deformation under pressure. Furthermore, the automotive plastic parts increase their corrosion resistance, anti-aging properties, wear resistance and easy cleaning functions through anti-scratch layers, corrosion-resistant coatings, UV-resistant coatings and nano non-stick coatings. The addition of many functional coatings increases the number of processes, prolongs the production time, and thus increases the production cost. Utility Model Content
[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide an automotive plastic part. This automotive plastic part, through the design of an outer shell, a buffer groove, and a buffer pad, can increase the cushioning and pressure resistance of the automotive plastic part when it is subjected to compression. Moreover, the rigidity of the inner shell is greater than that of the outer shell, which can ensure that the automotive plastic part will not break due to excessive deformation, greatly improving the performance of the automotive plastic part. Furthermore, through the protective layer on the surface of the outer shell, it has excellent physical and chemical properties such as high tensile strength, large elongation, good flexibility, strong wear resistance, aging resistance, and corrosion resistance. At the same time, its surface is hydrophobic and oleophobic, easy to clean, and does not require multiple functional coatings, thus reducing production costs.
[0006] To solve the above problems, the present invention adopts the following technical solution.
[0007] An automotive plastic part includes a plastic part body, which comprises an outer shell and an inner shell. The outer shell and the inner shell are detachably connected by fastening screws. The surface of the inner shell has a first through hole and a second through hole, the inner walls of which are movably connected to the surface of the fastening screws. A buffer groove is formed between the outer shell and the inner shell, and a buffer pad is movably connected to the inner wall of the buffer groove. This automotive plastic part, through its outer shell, buffer groove, and buffer pad, can increase its cushioning and pressure resistance when subjected to compression. Furthermore, the inner shell has greater rigidity than the outer shell, ensuring that the automotive plastic part will not crack due to excessive deformation, greatly improving its performance. The protective layer on the surface of the outer shell provides excellent physical and chemical properties such as high tensile strength, high elongation, good flexibility, strong wear resistance, aging resistance, and corrosion resistance. Simultaneously, its surface is hydrophobic and oleophobic, easy to clean, and eliminates the need for multiple functional coatings, reducing production costs.
[0008] Furthermore, the outer shell includes a substrate made of ABS engineering plastic. The surface of the substrate has a pre-set anti-detachment groove, and a protective layer is fixedly bonded to the surface of the substrate. The substrate has good hardness and rigidity, as well as a certain degree of toughness and excellent processing performance, which can increase the compressive strength of the surface of automotive plastic parts.
[0009] Furthermore, the protective layer is coated with polyurea wear-resistant and anti-corrosion coating. The inner surface of the protective layer is provided with a fixing strip, and the inner wall of the fixing strip is fixedly bonded to the inner wall of the anti-detachment groove. The protective layer is an elastomer coating generated by the reaction of isocyanate component and amino compound component. It has excellent physical and chemical properties such as high tensile strength, large elongation, good flexibility, strong wear resistance, aging resistance, and corrosion resistance. At the same time, it has low surface viscosity and has the functions of hydrophobicity, oleophobicity, and easy cleaning.
[0010] Furthermore, the inner wall of the outer casing is fixedly fitted with a first threaded sleeve and a second threaded sleeve. One end of the first threaded sleeve has a first threaded hole, and one end of the second threaded sleeve has a second threaded hole. The first threaded sleeve and the second threaded sleeve facilitate the increase of the connection between the outer casing and the fastening screw.
[0011] Furthermore, the thickness of the buffer pad is greater than the width of the buffer groove, and the material of the buffer pad is expandable thermoplastic polyurethane. The buffer pad is lightweight, highly elastic, and has a low density. It can deform under pressure and quickly return to its original shape, providing good cushioning and shock absorption effects.
[0012] Furthermore, a first anti-detachment plate is fixedly connected to one end of the first threaded sleeve, and a second anti-detachment plate is fixedly connected to one end of the second threaded sleeve. The first and second anti-detachment plates can increase the composite firmness of the first and second threaded sleeves and the outer shell.
[0013] Furthermore, the inner shell is made of polycarbonate plastic, and the inner wall of the inner shell is coated with a corrosion-resistant coating. The inner shell has high strength and high rigidity, and good heat resistance and impact resistance. It is a high-performance plastic with better rigidity than ABS, which improves the support strength of automotive plastic parts.
[0014] Compared with existing technologies, the advantages of this utility model are:
[0015] (1) This solution can increase the buffering and pressure resistance of automotive plastic parts when they are squeezed by setting the outer shell, buffer groove and buffer pad. Moreover, the rigidity of the inner shell is greater than that of the outer shell, which can ensure that the automotive plastic parts will not break due to excessive deformation, thus greatly improving the performance of automotive plastic parts.
[0016] (2) This solution has excellent physical and chemical properties such as high tensile strength, large elongation, good flexibility, strong wear resistance, aging resistance and corrosion resistance through the protective layer on the surface of the outer shell. At the same time, its surface is hydrophobic and oleophobic and easy to clean, eliminating the need for multiple functional coatings and reducing production costs. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0018] Figure 2 This is a sectional view of the mounting structure of the outer shell and inner shell of this utility model;
[0019] Figure 3 for Figure 2 Enlarged view of part A;
[0020] Figure 4 for Figure 2 Enlarged view of part B;
[0021] Figure 5 This is a cross-sectional view of the outer shell of this utility model.
[0022] Explanation of the labels in the diagram:
[0023] 1. Plastic body; 2. Outer shell; 21. Anti-detachment groove; 22. Protective layer; 23. Fixing strip; 24. Base; 3. Inner shell; 31. First through hole; 32. Second through hole; 4. Buffer groove; 5. Buffer pad; 6. First threaded sleeve; 61. First threaded hole; 62. First anti-detachment plate; 7. Second threaded sleeve; 71. Second threaded hole; 72. Second anti-detachment plate; 8. Fastening screw. Detailed Implementation
[0024] 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.
[0025] Example 1: Please refer to Figure 1-5 The automotive plastic part includes a plastic part body 1, which comprises an outer shell 2 and an inner shell 3. The inner shell 3 has higher rigidity than the outer shell 2 and can support the outer shell 2 and the buffer pad 5 when they deform, preventing the outer shell 2 from deforming excessively and breaking. The inner shell 3 is made of polycarbonate plastic, and its inner wall is coated with a corrosion-resistant coating. The inner shell 3 has high strength, high rigidity, and good heat resistance and impact resistance. It is a high-performance plastic with better rigidity than ABS, which improves the support strength of the automotive plastic part. The outer shell 2 and the inner shell 3 are connected by... The fastening screw 8 is detachably connected. The surface of the inner shell 3 has a first through hole 31 and a second through hole 32. The inner walls of the first through hole 31 and the second through hole 32 are movably connected to the surface of the fastening screw 8. A buffer groove 4 is enclosed between the outer shell 2 and the inner shell 3. A buffer pad 5 is movably connected to the inner wall of the buffer groove 4. The thickness of the buffer pad 5 is greater than the width of the buffer groove 4. The material of the buffer pad 5 is expandable thermoplastic polyurethane. The buffer pad 5 is lightweight, highly elastic and has a low density. It can deform under pressure and quickly return to its original shape, with good buffering and shock absorption effects.
[0026] The outer shell 2 includes a substrate 24, which is made of ABS engineering plastic. The surface of the substrate 24 has a pre-set anti-detachment groove 21. A protective layer 22 is fixedly bonded to the surface of the substrate 24. The substrate 24 has good hardness and rigidity, as well as a certain degree of toughness and excellent processing performance, which can increase the compressive strength of the surface of automotive plastic parts. The protective layer 22 is coated with polyurea wear-resistant and anti-corrosion coating. The inner surface of the protective layer 22 is provided with a fixing strip 23. The inner wall of the fixing strip 23 is fixedly bonded to the inner wall of the anti-detachment groove 21. The protective layer 22 is an elastomer coating generated by the reaction of isocyanate components and amino compound components. It has excellent physical and chemical properties such as high tensile strength, large elongation, good flexibility, strong wear resistance, aging resistance, and corrosion resistance. At the same time, its surface viscosity is low, and it has the functions of hydrophobicity, oleophobicity, and easy cleaning.
[0027] The inner wall of the outer casing 2 is fixedly fitted with a first threaded sleeve 6 and a second threaded sleeve 7. One end of the first threaded sleeve 6 has a first threaded hole 61, and one end of the second threaded sleeve 7 has a second threaded hole 71. The first threaded sleeve 6 and the second threaded sleeve 7 facilitate the connection between the outer casing 2 and the fastening screw 8. One end of the first threaded sleeve 6 is fixedly connected with a first anti-detachment plate 62, and one end of the second threaded sleeve 7 is fixedly connected with a second anti-detachment plate 72. The first anti-detachment plate 62 and the second anti-detachment plate 72 can increase the composite firmness of the first threaded sleeve 6, the second threaded sleeve 7 and the outer casing 2.
[0028] When the automotive plastic part is subjected to extrusion, the extruded material compresses the protective layer 22. The protective layer 22 buffers the extrusion force and then compresses the substrate 24. The substrate 24 deforms and compresses the buffer pad 5. The buffer pad 5 generates elasticity to provide secondary buffering of the extrusion force. At the same time, the inner shell 3 limits the buffer pad 5 to prevent the buffer pad 5 and the outer shell 2 from continuing to deform. Through the outer shell 2, the buffer groove 4 and the buffer pad 5, the buffering and pressure resistance performance of the automotive plastic part can be increased when it is subjected to extrusion. Moreover, the rigidity of the inner shell 3 is greater than that of the outer shell 2, which can ensure that the automotive plastic part will not break due to excessive deformation, greatly improving the performance of the automotive plastic part. Furthermore, the protective layer 22 on the surface of the outer shell 2 has excellent physical and chemical properties such as high tensile strength, large elongation, good flexibility, strong wear resistance, aging resistance and corrosion resistance. At the same time, its surface is hydrophobic and oleophobic, easy to clean, and does not require multiple functional coatings, thus reducing production costs.
[0029] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. Automotive plastic part comprising a plastic part body (1), characterized in that: The plastic body (1) includes an outer shell (2) and an inner shell (3). The outer shell (2) and the inner shell (3) are detachably connected by fastening screws (8). The surface of the inner shell (3) has a first through hole (31) and a second through hole (32). The inner walls of the first through hole (31) and the second through hole (32) are movably connected to the surface of the fastening screws (8). A buffer groove (4) is enclosed between the outer shell (2) and the inner shell (3). A buffer pad (5) is movably connected to the inner wall of the buffer groove (4).
2. The automotive plastic part of claim 1, wherein: The outer shell (2) includes a base (24), the base (24) is made of ABS engineering plastic, the surface of the base (24) is pre-set with an anti-detachment groove (21), and a protective layer (22) is fixedly bonded to the surface of the base (24).
3. The automotive plastic part according to claim 2, characterized in that: The protective layer (22) is coated with polyurea wear-resistant and anti-corrosion coating. The inner surface of the protective layer (22) is provided with a fixing strip (23), and the inner wall of the fixing strip (23) is fixedly bonded to the inner wall of the anti-detachment groove (21).
4. The automotive plastic part of claim 1, wherein: The inner wall of the outer shell (2) is fixedly fitted with a first threaded sleeve (6) and a second threaded sleeve (7). One end of the first threaded sleeve (6) has a first threaded hole (61), and one end of the second threaded sleeve (7) has a second threaded hole (71).
5. The automotive plastic part of claim 1, wherein: The thickness of the buffer pad (5) is greater than the width of the buffer groove (4), and the material of the buffer pad (5) is expandable thermoplastic polyurethane.
6. The automotive plastic part of claim 4, wherein: One end of the first screw sleeve (6) is fixedly connected to a first anti-detachment plate (62), and one end of the second screw sleeve (7) is fixedly connected to a second anti-detachment plate (72).
7. The automotive plastic part of claim 1, wherein: The inner shell (3) is made of polycarbonate plastic, and the inner wall of the inner shell (3) is coated with a corrosion-resistant coating.