Concave-convex grain coating structure of automotive trim surface

Abstract

The utility model relates to the technical field of automobile interiors, in particular to an automobile interior skin concave-convex grain wrapping structure which comprises a framework (G), a bottom skin layer (D), a sponge layer (H), a skin layer (B), a sewing layer (F) and a glue layer J. The automobile interior skin concave-convex grain wrapping structure is scientific in design, reasonable in structure, reliable and safe in function, attractive in appearance, comfortable in touch feeling, economical, durable and convenient to manufacture, and the three-dimensional wrapping characteristic is achieved while the three-dimensional wrapping effect is achieved. The sewing difficulty is reduced, and the manufacturing cost is low.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automotive interior, especially to the automotive interior skin concave-convex line covering structure. BACKGROUND

[0002] The soft covering of the framework such as instrument desk and armrest of traditional automotive interior adopts single layer leather and PU material sponge bubble layer sewing, since the sponge is soft and very easy to be compressed, the position deviation of the sponge layer is very large, when the single leather and the sponge layer are sewn according to the modeling track, the sponge layer is not attached, the surface sewing line is inconsistent, the surface cannot realize the concave-convex line feature, the appearance collapses and wrinkles, and the full three-dimensional effect cannot be achieved, the sensory evaluation of the soft covering product is poor, and the scrap rate is high. UTILITY MODEL CONTENT

[0003] In view of the defects of the prior art, the utility model provides an automotive interior skin concave-convex line covering structure to solve the above technical problems.

[0004] The utility model adopts the technical scheme of:

[0005] An automotive interior skin concave-convex line covering structure, comprising a framework, a bottom skin layer, a sponge layer, a skin layer, a sewing layer and a glue layer, characterized in that the lower layer surface of the sponge layer H is attached together with the upper layer surface of the bottom skin layer, the lower layer surface of the skin layer is attached together with the upper layer surface of the sponge layer, the sewing layer is inserted together with the skin layer, the sponge layer and the bottom skin layer, the sponge layer is compressed at the sewing line part thereof, the concave-convex line of the skin layer is formed, the sewing line of the sewing layer is exposed and attached to the upper layer surface of the skin layer, and the upper layer surface of the skin layer B forms a decorative surface together with the upper layer surface of the skin layer, the sewing line of the sewing layer is exposed and attached to the lower layer surface of the bottom skin layer, and the lower layer surface of the bottom skin layer forms a gluing surface together with the lower layer surface of the bottom skin layer, and the gluing surface is firmly and flatly glued together with the framework through the glue layer.

[0006] The automotive interior skin concave-convex line covering structure is characterized in that the thickness of the skin layer is 0.5mm-1.5mm.

[0007] The automotive interior skin concave-convex line covering structure is characterized in that the thickness of the bottom skin layer is 0.5mm-1.5mm.

[0008] The automotive interior skin concave-convex line covering structure is characterized in that the initial thickness of the sponge layer is 5cm-10cm, and the sewing layer compresses the sponge layer by 25%-30% at the sewing line part thereof.

[0009] The automotive interior skin concave-convex line covering structure is characterized in that the sewing line of the sewing layer of the decorative surface is exposed to the upper layer surface of the skin layer, and forms a geometric decorative pattern.

[0010] The sponge layer is a PU sponge material.

[0011] The automobile interior skin concave-convex line covering structure is scientific in design, reasonable in structure, reliable and safe in action, beautiful in appearance, comfortable in touch, economical and durable, convenient to manufacture, reduces sewing difficulty while realizing 3D covering characteristics, and is not high in manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0012] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. The above and other aspects of the application will become more apparent and the application will be better understood from the following detailed description with reference to the drawings.

[0013] Figure 1 Fig. 1 is a top view of the automobile interior skin concave-convex line covering structure of the present application;

[0014] Figure 2 Fig. 2 is an A-A sectional view of the automobile interior skin concave-convex line covering structure of the present application; Figure 1

[0015] Fig. 1 is a top view of the automobile interior skin concave-convex line covering structure of the present application; DETAILED DESCRIPTION

[0016] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described below are only used to explain the present application, and in these descriptions, the key words to be noted include "convex part", "concave part" and "interference", etc., which are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as the limitation of the present application.

[0017] As Figure 1 and Figure 2 ​As shown, the textured surface covering structure of the automotive interior trim in this embodiment, taking the interior trim covering of the automotive armrest frame as an example, includes a frame G, a base layer D, a sponge layer H, a surface layer B, a sewing layer F, and an adhesive layer J. The thickness of the surface layer B and the base layer D is 1mm. The initial thickness of the sponge layer H is 7cm, made of PU sponge material, which is generally compressed by a maximum of 25-30%. In this embodiment, the maximum compression is 5cm. Its lower layer is bonded to the upper layer of the base layer D. The lower layer of the surface layer B is bonded to the upper layer of the sponge layer H. The sewing layer F is interwoven with the surface layer B, the sponge layer H, and the base layer D. Its sewing lines are exposed and close to the upper layer of the surface layer B, forming a decorative surface together with the upper layer of the surface layer B. Its sewing lines are exposed and close to the lower layer of the base layer D, forming an adhesive surface together with the lower layer of the base layer D. The adhesive surface is firmly and smoothly bonded to the frame G through the adhesive layer J.

[0018] In this embodiment, the armrest frame G is first injection molded. Then, the bottom layer D, sponge layer H, and outer layer B are sewn together to form a sewn layer F. The sewn layer F interweaves with the outer layer B, sponge layer H, and bottom layer D. Utilizing the elastic deformation properties of the sponge material, the sewn layer F compresses the sponge layer H by 25-30% at the sewing lines, forming the textured surface of the outer layer B (bottom layer D), achieving a 3D covering feature. In this embodiment, the interweaving sewing lines between the sewn layer F and the outer layer B, sponge layer H, and bottom layer D ensure that the sponge layer H is compressed to a maximum of 5mm at the sewing lines. This compression from an initial thickness of 7cm to 5cm is referred to in the industry as an interference of 2cm (7cm - 5cm = 2cm) for the sponge layer H. After sewing, a recess O is formed in the outer layer B, with the sewing lines forming the bottom of the recess O in the outer layer B. Furthermore, the rectangular shape formed by adjacent intersecting and opposite sewing threads, combined with the elasticity of the sponge layer H, creates a protrusion T on the epidermal layer B, with the center of the rectangle being the apex of the protrusion T. The sponge layer H is originally 7mm thick; by adjusting the tension of the sewing thread during sewing, the appropriate compression of the sponge layer H can be controlled. The sewing layer F exposes the sewing threads on the upper layer of the epidermal layer B, forming a geometric decorative pattern. In this embodiment, it is as follows... Figure 1 The rectangular pattern shown can also be a diamond pattern, or other regular or irregular patterns, serving a decorative purpose. Finally, the glued surface formed by the sewn bottom layer D and the sewing layer F is bonded to the skeleton G with glue (glue layer J), so that the bottom layer D is completely and smoothly attached to the surface of the skeleton G. Through the glued bonding, the tension of the sewing layer F makes the texture of the top layer B of the epidermis fuller and the feel more comfortable.

[0019] The above description is only a general embodiment of this utility model. For those skilled in the art, there are various other embodiments with modifications and variations, which will not be elaborated here. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model are included within the protection scope claimed by this utility model.

Claims

1. A textured coating structure for automotive interior trim, comprising a skeleton (G), a base layer (D), a sponge layer (H), an outer layer (B), a sewing layer (F), and an adhesive layer (J), characterized in that, The lower layer of the sponge layer (H) is bonded to the upper layer of the base layer (D), the lower layer of the epidermis layer (B) is bonded to the upper layer of the sponge layer (H), and the sewing layer (F) is interwoven with the epidermis layer (B), the sponge layer (H), and the base layer (D). At its sewing lines, the sponge layer (H) is compressed to form the textured surface of the epidermis layer (B). Furthermore, its sewing lines are exposed and close to the upper layer of the epidermis layer (B), forming a decorative surface together with the upper layer of the epidermis layer (B). Its sewing lines are exposed and close to the lower layer of the base layer (D), forming an adhesive surface together with the lower layer of the base layer (D). The adhesive surface is firmly and smoothly bonded to the skeleton (G) by the adhesive layer (J).

2. The textured coating structure for automotive interior trim as described in claim 1, characterized in that, The thickness of the epidermal layer (B) is 0.5mm-1.5mm.

3. The textured coating structure for automotive interior trim as described in claim 1, characterized in that, The thickness of the base layer (D) is 0.5mm-1.5mm.

4. The textured coating structure for automotive interior trim as described in claim 1, characterized in that, The initial thickness of the sponge layer (H) is 5cm-10cm, and the sewing layer (F) compresses the sponge layer (H) by 25%-30% at its sewing line.

5. The textured coating structure for automotive interior trim as described in claim 1, characterized in that, The decorative surface has its sewn layer (F) exposed above the epidermal layer (B) with sewn threads, forming a geometric decorative pattern.

6. The textured coating structure for automotive interior trim as described in claim 1, characterized in that, The sponge layer (H) is made of PU sponge material.

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