Multi-color injection molding vehicle ornament and vehicle comprising same

By thinning the edge area of ​​the skin layer of the multi-color injection molded vehicle trim and setting up a raised structure or protruding part, the problem of overflow flash defects is solved, and the aesthetics and quality of the product are improved.

CN222905451UActive Publication Date: 2025-05-27SHANGHAI YANFENG JINQIAO AUTOMOTIVE TRIM SYSTEMS CO LTD

Patent Information

Application Number
CN202421646242.3
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-12
Publication Date
2025-05-27
Estimated Expiration
2034-07-12

AI Technical Summary

Technical Problem

During the molding process of multi-color injection molded vehicle trim, the high flowability of soft plastic materials leads to spilling flash defects, affecting the aesthetics of the product.

Method used

By thinning in the edge areas of the skin layer, the material cooling molding is accelerated, thereby preventing spilling flashes. The specific method includes gradually reducing the thickness in the edge area and, if necessary, provide a raised structure or protrusion to assist in molding.

Benefits of technology

Effectively avoids spilling and flashing defects, ensuring the aesthetics and quality of vehicle trims.

✦ Generated by Eureka AI based on patent content.

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  • Figure CN222905451U_ABST
    Figure CN222905451U_ABST
Patent Text Reader

Abstract

The utility model relates to a multicolor injection molding vehicle ornament and a vehicle comprising the same. The vehicle ornament comprises a framework layer and a surface layer covering the framework layer, the framework layer is a hard plastic material layer, the surface layer is a soft plastic material layer, and the surface layer is provided with an edge area adjacent to the boundary of the vehicle ornament. At least a portion of the edge region has a reduced thickness compared to a remaining region of the skin layer other than the edge region. According to the ornament, the structure of the boundary area of the ornament is improved, so that flash and flash are effectively avoided, and the attractiveness is ensured.
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Description

Technical Field

[0001] The utility model relates to the technical field of vehicle parts. More specifically, the utility model relates to a multi-color injection molded vehicle trim piece, and a vehicle including such a trim piece. Background Art

[0002] For a soft multi-color injection molded vehicle trim piece product, generally the first shot is made of a hard plastic material and the second shot is made of a soft plastic material. Usually, the fluidity of the soft plastic material is much greater than that of the hard plastic material, and the position of the soft plastic material generally forms the appearance surface. For the molding process of the product, when the second shot is carried out, the hard plastic material skeleton of the first shot has been molded and is located on the fixed mold, and the cavity of the second shot is located on the moving mold. Then, there must be a parting line formed at the boundary position between the fixed mold and the moving mold on the skin boundary of the second-shot soft plastic molding. Further, there must be an ineliminable gap between the fixed mold and the moving mold. Therefore, the molded vehicle trim piece product is very likely to generate flash at the parting line position. In particular, the higher the fluidity of the soft plastic material, the more serious the flash defect. For multi-color injection molded vehicle parts, if there is a skin layer of soft plastic material, there is also the problem of flash.

[0003] In the prior art, as described in the patent document CN218519053U, a retaining mechanism can be locally designed on the mold, which can increase the local clamping force without changing the overall clamping force of the mold, thereby reducing flash and burrs. However, the design and manufacture of the mold are usually relatively complex and costly. In addition, through the structural design of the product, the potential flash and burr boundary positions can be blocked by the mating part, but this method is limited by the position and structure of the mating part and is not conducive to precise implementation. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a multi-color injection molded vehicle trim piece, which effectively avoids flash caused by soft plastic material injection through the structural improvement of its own boundary area, thus ensuring the aesthetics.

[0005] To this end, a first aspect of the utility model provides a multi-color injection molded vehicle trim piece, including a skeleton layer and a skin layer covering the skeleton layer. The skeleton layer is a hard plastic material layer, and the skin layer is a soft plastic material layer. Wherein, the skin layer has an edge area adjacent to the boundary of the vehicle trim piece, and at least a part of the edge area has a reduced thickness compared with the rest of the skin layer except the edge area.

[0006] Therefore, by thinning the edge area of the skin layer, the cooling and molding of the material of the skin layer in this edge area can be accelerated, thereby preventing flash at the parting line position.

[0007] According to the above technical concept, the present utility model may further include any one or more of the following optional forms.

[0008] In some optional forms, the skin layer is made of a thermoplastic elastomer material.

[0009] In some optional forms, the thickness of the edge region gradually decreases in the direction from the center of the vehicle trim to the boundary of the vehicle trim.

[0010] In some optional forms, the thickness of the edge region varies linearly, non-linearly with an increasing rate of change, or non-linearly with a decreasing rate of change in the direction from the center of the vehicle trim to the boundary of the vehicle trim.

[0011] In some optional forms, the thickness of the starting position of the edge region in the direction from the center of the vehicle trim to the boundary of the vehicle trim is between 0.5 mm and 3 mm, and / or the thickness of the ending position of the edge region in the direction from the center of the vehicle trim to the boundary of the vehicle trim is between 0.2 mm and 2 mm.

[0012] In some optional forms, the length of the edge region in the direction from the center of the vehicle trim to the boundary of the vehicle trim is between 30 mm and 60 mm.

[0013] In some optional forms, the skeleton layer is provided with at least one convex structure protruding towards the skin layer, and the projection of the at least one convex structure in the thickness direction of the vehicle trim is located within the edge region.

[0014] In some optional forms, in the plane formed by the direction from the center of the vehicle trim to the boundary of the vehicle trim and the thickness direction of the vehicle trim, the convex structure has a triangular, square or arc-shaped cross-sectional shape.

[0015] In some optional forms, the protruding height of the convex structure is between 0.2 mm and 2.5 mm, and / or the thickness of the remaining region of the skin layer except the edge region is between 0.5 mm and 3 mm.

[0016] In some optional forms, the skeleton layer is provided with a plurality of convex structures arranged in sequence in the direction from the center of the vehicle trim to the boundary of the vehicle trim.

[0017] In some optional forms, the plurality of convex structures have the same protruding height, or the protruding heights of the plurality of convex structures increase in sequence in the direction from the center of the vehicle trim to the boundary of the vehicle trim.

[0018] In some alternative forms, the skeleton layer is provided with a protruding portion that protrudes outside the edge region in a direction from the center of the vehicle trim to the boundary of the vehicle trim, and the protruding height of the protruding portion is greater than or equal to the maximum thickness of the edge region.

[0019] In some alternative forms, the protruding height of the protruding portion is at least 0.3 mm greater than the maximum thickness of the edge region.

[0020] A second aspect of the present utility model provides a vehicle, including a multi-color injection-molded vehicle trim according to the first aspect of the present utility model.

[0021] In some alternative forms, the vehicle trim is an instrument panel, a door panel, a sub-instrument panel, a door frame trim, or a seat trim of the vehicle. Description of the Drawings

[0022] Other features and advantages of the present utility model will be better understood through the following preferred embodiments described in detail in conjunction with the drawings. In the drawings, the same reference numerals denote the same or similar components.

[0023] Figure 1A is a schematic diagram of a vehicle including a vehicle trim according to an embodiment of the present utility model.

[0024] Figure 1B is Figure 1A a schematic diagram of the internal structure of the vehicle.

[0025] Figure 2A is a three-dimensional view of a vehicle trim with flash.

[0026] Figure 2B is Figure 2A a three-dimensional view of another perspective of the vehicle trim.

[0027] Figure 3A is a schematic diagram of the overall structure of a vehicle trim.

[0028] Figure 3B is Figure 3A a cross-sectional view taken along plane A-A in

[0029] Figure 3C is Figure 3B an enlarged view of region P in

[0030] Figures 4 to 14 respectively show partial cross-sectional views of the first to eleventh embodiments of the vehicle trim according to the present utility model.

[0031] The components in the drawings are shown for simplicity and clarity and are not necessarily drawn to exact scale and shape. It should be understood that the drawings are not only used for the explanation and illustration of the present utility model, but also helpful for the limitation of the present utility model when necessary. Detailed Description of the Preferred Embodiment

[0032] The implementation and use of specific embodiments will be discussed in detail below. However, it should be understood that the specific embodiments discussed are only exemplary illustrations of specific ways of implementing and using the present utility model, and do not limit the scope of the present utility model.

[0033] In this document, when describing the structural positions of various components, the directional expressions such as "upper", "lower", "top", "bottom", etc. are not absolute but relative. For example, when the components are arranged as shown in the figures, these directional expressions are appropriate, but when the positions of the components in the figures change, these directional expressions should also change accordingly. In addition, in this document and the drawings, the direction D represents the direction from the inside to the outside of the vehicle trim, that is, the direction from the center of the vehicle trim towards the boundary of the vehicle trim, and is also the material flow direction when the skin layer of the vehicle trim is formed.

[0034] As Figure 1A and Figure 1B shown, the multi-color injection-molded vehicle trim with an anti-overflow flash structure according to the present utility model is arranged inside the vehicle V, and is mainly applied to, but not limited to, the following vehicle interior products: instrument panel IP, door panel DP, center console CS, door frame trim DFT, seat trim ST, etc. The present utility model does not limit the specific type of the vehicle trim.

[0035] As Figure 2A and Figure 2B and Figures 3A to 3C shown, the vehicle trim T is formed by two-color injection molding. The first injection is the skeleton layer 10, that is, the hard plastic material layer, and the second injection is the skin layer 20 covering the upper part of the skeleton layer 10, that is, the soft plastic material layer. The top surface of the skin layer 20 forms the smooth appearance surface of the vehicle trim T. In the boundary region B of the vehicle trim T, in the Figure 3C ideal state shown, the boundary 11 of the skeleton layer 10 is flush with the boundary 21 of the skin layer 20. However, as mentioned above, the fluidity of the soft plastic material of the skin layer 20 is much greater than that of the hard plastic material of the skeleton layer 10. Since there is a parting line formed between the boundary 11 of the skeleton layer 10 and the boundary 21 of the skin layer 20, and there must be a gap between the fixed mold and the moving mold, the molded product is very likely to generate overflow flash FH at the parting line position (refer to Figure 2A and Figure 2B ), thus affecting the aesthetics.

[0036] To this end, in the soft two-color injection-molded vehicle trim part according to the present utility model, flash at the parting line position is prevented by reducing the thickness of the edge region of the skin layer 20 adjacent to the boundary of the trim part. More specifically, for the edge region of the skin layer 20 located at the end in the material flow direction (i.e., direction D) during its molding, at least a part of this edge region has a reduced thickness compared to the remaining regions of the skin layer 20 other than this edge region. Correspondingly, the region of the skeleton layer 10 opposite to this edge region has an increased thickness compared to the remaining regions of the skeleton layer 10.

[0037] Next, with the aid of Figures 4 to 14 to describe a plurality of different embodiments of the vehicle trim part according to the present utility model. It can be understood that, similar to Figure 3C , Figures 4 to 14 are all shown as partial cross-sectional views taken along the plane formed by direction D and the thickness direction of the vehicle trim part.

[0038] First Embodiment

[0039] As Figure 4As shown, in this soft two-color injection molded vehicle trim part, near the boundary position of the trim part, in the direction D, the thickness of the edge region of the skeleton layer 10 gradually increases, and the thickness of the edge region of the skin layer 20 (i.e., the region between the starting position 22 of the thickness change of the skin layer 20 and the boundary 21 of the skin layer 20) gradually decreases, so that the top surface 23 of the skin layer 20 remains as a smooth appearance surface, and the boundary 21 of the skin layer 20 is flush with the boundary 11 of the skeleton layer 10 to form the boundary of the trim part as a whole. In the first embodiment, the thickness of the edge region of the skin layer 20 gradually decreases in a linear change manner in the direction D, that is, the section 24a of the bottom surface 24 of the skin layer 20 located in the edge region is in an inclined straight line shape in the shown cross-section. The skeleton layer 10 is made of, for example, PC (polycarbonate) material, and can also be made of materials such as PC / ABS (engineering plastic alloy), PP / PE (polypropylene / polyethylene), ABS (acrylonitrile-butadiene-styrene copolymer), or PA6 (nylon 6). The skin layer 20 is made of, for example, TPE (thermoplastic elastomer material), and can also be made of materials such as PVC (polyvinyl chloride), TPS (polystyrene-based thermoplastic elastomer), TPV (thermoplastic vulcanizate), TPU (thermoplastic polyurethane elastomer), or TPO (thermoplastic polyolefin). Preferably, in the direction D, the thickness of the starting position (i.e., the starting position 22 of the thickness change) of the edge region of the skin layer 20 is about 1 mm, the thickness of the end position (i.e., the boundary 21) of the edge region of the skin layer 20 is about 0.3 mm, and the length of the edge region of the skin layer 20 (i.e., the length from the starting position 22 of the thickness change to the boundary 21) is about 40 mm. In particular, for different soft plastic materials, the size data can be adjusted accordingly. For example, in the direction D, the thickness of the starting position of the edge region of the skin layer 20 can be between 0.5 mm and 3 mm, and / or the thickness of the end position of the edge region of the skin layer 20 can be between 0.2 mm and 2 mm, while the length of the edge region of the skin layer 20 can be between 30 mm and 60 mm. Thus, by gradually thinning the thickness of the edge region of the skin layer 20, the cooling and molding of the material of the skin layer 20 in the edge region can be accelerated, thereby preventing flash at the parting line position.

[0040] Second Embodiment

[0041] As Figure 5 shown, in the second embodiment, the thickness of the edge region of the skin layer 20 gradually decreases in a non-linear change manner with a gradually increasing change rate in the direction D, that is, the section 24a of the bottom surface 24 of the skin layer 20 located in the edge region is in a curved shape in the shown cross-section, and the convex direction of the curve faces the skeleton layer 10. The remaining structure of the vehicle trim part in this second embodiment is the same as that in the first embodiment.

[0042] Third Embodiment

[0043] As Figure 6 shown, in the third embodiment, the thickness of the edge region of the skin layer 20 gradually decreases in a non-linear change manner with a gradually decreasing change rate in the direction D, that is, the section 24a of the bottom surface 24 of the skin layer 20 located in the edge region is curved in the shown cross-section, and the convex direction of the curve faces the skin layer 20. The rest of the structure of the vehicle trim of this third embodiment is the same as that of the first embodiment.

[0044] Fourth Embodiment

[0045] As Figure 7As shown, in this soft two-color injection-molded vehicle trim part, at a position near the boundary of the trim part, at least one convex structure 24b protruding towards the skin layer 20 is provided on the skeleton layer 10, and the projection of the at least one convex structure 24b in the thickness direction of the vehicle trim part is located within the edge area of the skin layer 20. Preferably, the skeleton layer 10 is provided with a plurality of convex structures 24b arranged in sequence in the direction D. The top end of the convex structure 24b does not exceed the top surface 23 of the skin layer 20, which causes the thickness of the edge area of the skin layer 20 (i.e., the area between the starting position 22 of the thickness change of the skin layer 20 and the boundary 21 of the skin layer 20) to decrease at the position of the convex structure 24b, the top surface 23 of the skin layer 20 remains as a smooth appearance surface, and the boundary 21 of the skin layer 20 is flush with the boundary 11 of the skeleton layer 10 to integrally form the boundary of the trim part. In the fourth embodiment, the skeleton layer 10 is provided with three convex structures 24b arranged in sequence in the direction D, and in the shown cross-section, these three convex structures 24b have a symmetric triangular cross-sectional shape with the same size and shape. It can be understood that the sizes and shapes of these three convex structures 24b can also be set to be different. The skeleton layer 10 is made of, for example, PC material, and can also be made of materials such as PC / ABS, PP / PE, ABS, or PA6. The skin layer 20 is made of, for example, TPE material, and can also be made of materials such as PVC, TPS, TPV, TPU, or TPO. Preferably, the same protrusion height of the three triangular convex structures 24b (i.e., the height L1 from the bottom surface 24 of the skin layer 20 to the top of the convex structure 24b) is approximately 0.5 mm, and the thickness of the remaining area of the skin layer 20 except the edge area (i.e., the thickness at the starting position 22 of the thickness change) is approximately 1 mm. In particular, for different soft plastic materials, the size data can be adjusted accordingly, and the triangular cross-section of the convex structure 24b can be set to be asymmetric. For example, the protrusion height of the triangular convex structure 24b can be between 0.2 mm and 2.5 mm, and / or the thickness of the remaining area of the skin layer 20 except the edge area can be between 0.5 mm and 3 mm. Thus, by thinning the specific hierarchical change of the thickness of the edge area of the skin layer 20, the cooling and molding of the material of the skin layer 20 in the edge area can be accelerated, thereby preventing flash at the parting line position.

[0046] Fifth Embodiment

[0047] As Figure 8As shown, in the fifth embodiment, the skeleton layer 10 is provided with three protruding structures 24b arranged in sequence in the direction D. And in the shown cross-section, these three protruding structures 24b have a symmetrical triangular cross-sectional shape with the same shape, and the protruding heights of these three triangular protruding structures 24b increase in sequence in the direction D, for example, about 0.3 mm, about 0.4 mm, and about 0.5 mm respectively. The remaining structure of the vehicle trim of this fifth embodiment is the same as that of the fourth embodiment.

[0048] Sixth Embodiment

[0049] As Figure 9 shown, in the sixth embodiment, the skeleton layer 10 is provided with three protruding structures 24b arranged in sequence in the direction D. And in the shown cross-section, these three protruding structures 24b have a symmetrical square cross-sectional shape with the same size and shape. Preferably, the same protruding height of these three square protruding structures 24b is about 0.5 mm, and the thickness of the remaining area of the skin layer 20 except the edge area (i.e., the thickness at the thickness change starting position 22) is about 1 mm. In particular, for different soft plastic materials, the size data can be adjusted accordingly, and the square cross-section of the protruding structure 24b can be set to be asymmetrical. For example, the protruding height of the square protruding structure 24b can be between 0.2 mm and 2.5 mm, and / or the thickness of the remaining area of the skin layer 20 except the edge area can be between 0.5 mm and 3 mm. The remaining structure of the vehicle trim of this sixth embodiment is the same as that of the fourth embodiment.

[0050] Seventh Embodiment

[0051] As Figure 10 shown, in the seventh embodiment, the skeleton layer 10 is provided with three protruding structures 24b arranged in sequence in the direction D. And in the shown cross-section, these three protruding structures 24b have a symmetrical square cross-sectional shape with the same shape, and the protruding heights of these three square protruding structures 24b increase in sequence in the direction D, for example, about 0.3 mm, about 0.4 mm, and about 0.5 mm respectively. The remaining structure of the vehicle trim of this seventh embodiment is the same as that of the sixth embodiment.

[0052] Eighth Embodiment

[0053] As Figure 11As shown, in the eighth embodiment, the skeleton layer 10 is provided with three convex structures 24b arranged in sequence in the direction D, and in the shown cross-section, these three convex structures 24b have a symmetric arc-shaped cross-section with the same size and shape. Preferably, the same protruding height of these three arc-shaped convex structures 24b is about 0.5 mm, and the thickness of the remaining area of the skin layer 20 except the edge area (i.e., the thickness at the starting position 22 of the thickness change) is about 1 mm. In particular, for different soft plastic materials, the size data can be adjusted accordingly, and the arc-shaped cross-section of the convex structure 24b can be set to be asymmetric. For example, the protruding height of the arc-shaped convex structure 24b can be between 0.2 mm and 2.5 mm, and / or the thickness of the remaining area of the skin layer 20 except the edge area can be between 0.5 mm and 3 mm. The remaining structure of the vehicle trim in this eighth embodiment is the same as that in the fourth embodiment.

[0054] Ninth Embodiment

[0055] As Figure 12 shown, in the ninth embodiment, the skeleton layer 10 is provided with three convex structures 24b arranged in sequence in the direction D, and in the shown cross-section, these three convex structures 24b have a symmetric arc-shaped cross-section with the same shape, and the protruding heights of these three arc-shaped convex structures 24b increase in sequence in the direction D, for example, about 0.3 mm, about 0.4 mm, and about 0.5 mm respectively. The remaining structure of the vehicle trim in this ninth embodiment is the same as that in the eighth embodiment.

[0056] Tenth Embodiment

[0057] As Figure 13As shown, in this soft two-color injection-molded vehicle trim part, near the boundary position of the trim part, in the direction D, the length of the edge region of the skin layer 20 with a reduced thickness (i.e., the region between the thickness change starting position 22 of the skin layer 20 and the boundary 21 of the skin layer 20) is small, making it difficult to rapidly accelerate the cooling and forming of the material of the skin layer 20 in this edge region. Thus, in the tenth embodiment, the skeleton layer 10 is provided with a protruding portion 12 that protrudes outward from the edge region of the skin layer 20 in the direction D. The protruding height of the protruding portion 12 (i.e., the height L2 from the bottom surface 24 of the skin layer 20 to the top of the protruding portion 12) is equal to the maximum thickness of the edge region of the skin layer 20 (i.e., the thickness of the thickness change starting position 22 of the skin layer 20), such that the top of the protruding portion 12 is flush with the top surface 23 of the skin layer 20 to form a smooth appearance surface, and the boundary 11 of the skeleton layer 10 alone forms the boundary of this vehicle trim part. The skeleton layer 10 is made of, for example, PC material, or can also be made of materials such as PC / ABS, PP / PE, ABS, or PA6. The skin layer 20 is made of, for example, TPE material, or can also be made of materials such as PVC, TPS, TPV, TPU, or TPO. Preferably, in the direction D, the thickness of the thickness change starting position 22 of the edge region of the skin layer 20 (i.e., the thickness of the remaining region of the skin layer 20 except for the edge region, which is also the protruding height of the protruding portion 12) is approximately 1 mm. In particular, for different soft plastic materials, the dimensional data can be adjusted accordingly. For example, the thickness of the thickness change starting position 22 of the edge region of the skin layer 20 can be between 0.5 mm and 3 mm. Thus, the protruding portion 12 of the skeleton layer 10 and the mold together seal the skin layer 20, thereby preventing flash at the parting line position.

[0058] Eleventh Embodiment

[0059] As Figure 14 shown, in the eleventh embodiment, the skeleton layer 10 is provided with a protruding portion 12 that protrudes outward from the edge region of the skin layer 20 in the direction D. The protruding height of the protruding portion 12 is greater than the maximum thickness of the edge region of the skin layer 20 (i.e., the thickness of the thickness change starting position 22 of the skin layer 20), for example, at least 0.3 mm greater than the maximum thickness of the edge region of the skin layer 20, such that the top of the protruding portion 12 is higher than the top surface 23 of the skin layer 20, and the boundary 11 of the skeleton layer 10 alone forms the boundary of this vehicle trim part. The remaining structure of the vehicle trim part in this eleventh embodiment is the same as that in the tenth embodiment.

[0060] The technical content and features of the present utility model have been disclosed above. However, it can be understood that under the creative concept of the present utility model, those skilled in the art can make various changes and improvements to the above-disclosed concept, but all fall within the protection scope of the present utility model. For example, the vehicle trim of the present utility model can also be a vehicle trim with three-color or more-color injection molding, which includes at least one hard plastic material layer and at least one soft plastic material layer.

[0061] The description of the above embodiments is illustrative rather than restrictive, and the protection scope of the present utility model is determined by the claims.

Claims

1. A multi-color injection molded vehicle trim, comprising a skeleton layer and a skin layer covering the skeleton layer, wherein the skeleton layer is a hard plastic material layer, and the skin layer is a soft plastic material layer. It is characterized in that The skin layer has an edge region adjacent to a boundary of the vehicle trim, and at least a portion of the edge region has a reduced thickness compared to a remaining region of the skin layer excluding the edge region.

2. The multi-color injection molded vehicle trim according to claim 1, characterized in that: The skin layer is made of thermoplastic elastomer material.

3. The multi-color injection molded vehicle trim according to claim 1 or 2, characterized in that: The thickness of the edge region gradually decreases in a direction from a center of the vehicle trim toward a boundary of the vehicle trim.

4. The multi-color injection molded vehicle trim according to claim 3, characterized in that: The thickness of the edge region changes linearly, changes nonlinearly with a gradually increasing rate of change, or changes nonlinearly with a gradually decreasing rate of change in a direction from the center of the vehicle trim toward a boundary of the vehicle trim.

5. The multi-color injection molded vehicle trim according to claim 3, characterized in that: The thickness of the edge area at a starting position in a direction from the center of the vehicle trim toward the boundary of the vehicle trim is between 0.5 mm and 3 mm, and / or the thickness of the edge area at an end position in a direction from the center of the vehicle trim toward the boundary of the vehicle trim is between 0.2 mm and 2 mm.

6. The multi-color injection molded vehicle trim according to claim 3, characterized in that: The length of the edge region in a direction from the center of the vehicle trim toward a boundary of the vehicle trim is between 30 mm and 60 mm.

7. The multi-color injection molded vehicle trim according to claim 1 or 2, characterized in that: The skeleton layer is provided with at least one protruding structure protruding toward the skin layer, and a projection of the at least one protruding structure along the thickness direction of the vehicle trim is located within the edge region.

8. The multi-color injection molded vehicle trim according to claim 7, characterized in that: The protrusion structure has a triangular, square, or arc-shaped cross-sectional shape in a plane formed by a direction from a center of the vehicle trim toward a boundary of the vehicle trim and a thickness direction of the vehicle trim.

9. The multi-color injection molded vehicle trim according to claim 7, characterized in that: The protrusion height of the protrusion structure is between 0.2 mm and 2.5 mm, and / or the thickness of the remaining area of ​​the skin layer except the edge area is between 0.5 mm and 3 mm.

10. The multi-color injection molded vehicle trim according to claim 7, characterized in that: The skeleton layer is provided with a plurality of protrusion structures sequentially arranged in a direction from a center of the vehicle trim toward a boundary of the vehicle trim.

11. The multi-color injection molded vehicle trim according to claim 10, characterized in that: The plurality of protruding structures have the same protruding height, or the protruding heights of the plurality of protruding structures increase sequentially in a direction from a center of the vehicle trim toward a boundary of the vehicle trim.

12. The multi-color injection molded vehicle trim according to claim 1 or 2, characterized in that: The skeleton layer is provided with a protruding portion protruding outside the edge region in a direction from the center of the vehicle trim toward the boundary of the vehicle trim, and a protruding height of the protruding portion is greater than or equal to a maximum thickness of the edge region.

13. The multi-color injection molded vehicle trim according to claim 12, characterized in that: A protrusion height of the protrusion is at least 0.3 mm greater than a maximum thickness of the edge region.

14. A vehicle, characterized in that: The invention comprises a multi-color injection molded vehicle trim according to any one of claims 1 to 13.

15. The vehicle according to claim 14, characterized in that The vehicle trim is a dashboard, a door panel, a secondary dashboard, a door frame trim or a seat trim of the vehicle.

Citation Information

Patent Citations

  • Double-color mold retaining structure

    CN218519053U

Cited By

  • Multi-color injection-molded vehicle trim and vehicle comprising same

    WO2026012460A1