Improved structure of car door outer plate

Abstract

The utility model belongs to the technical field of car door outer plates, and provides an improved structure of a car door outer plate, which comprises a car door outer plate appearance layer, a car door outer plate middle reinforcing layer and a reinforcing rib, the reinforcing rib is connected to the back of the car door outer plate middle reinforcing layer, and the car door outer plate appearance layer is connected to the front of the car door outer plate middle reinforcing layer. The automobile door outer plate has the advantages that the rigidity of the automobile door outer plate is improved, the product delicacy of the outer plate is improved, the side part of an automobile body is more attractive, the problem that a traditional plastic outer plate is seriously deformed due to heating is obviously solved, the size stability is better, and compared with a metal automobile door outer plate, the weight is obviously reduced by about 40%-50%; and recovery and reutilization can be realized.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle door outer panels, and in particular relates to an improved structure of a vehicle door outer panel. Background Art

[0002] Currently, the popular non-metallic door outer panels on the market are mostly equal-thickness and thin-plate parts made of resin injection molding. Although the purpose of reducing the weight of a single part is achieved, the door outer panels made of a single resin material are in an equal-thickness and thin-plate state as a whole. Due to the low modulus and large linear expansion coefficient of the resin material, the rigidity of the door outer panels is poor, and the difference in external dimensions under high and low temperature conditions is too large. In addition, after being affected by environmental factors such as high and low temperatures, the door panels are severely deformed, resulting in difficulty in ensuring the gap surface difference on the side of the vehicle body, affecting the appearance quality and refinement of the vehicle body, and in severe cases affecting the normal opening and closing function of the door. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an improved structure of a vehicle door outer panel which improves thermal deformation, reduces weight, and improves product refinement and appearance in view of the current status of the prior art.

[0004] The technical solution adopted by the utility model to solve the above technical problems is: an improved structure of a vehicle door outer panel, characterized in that it includes a vehicle door outer panel appearance layer, a vehicle door outer panel middle reinforcement layer and reinforcement ribs, the reinforcement ribs are connected to the back side of the vehicle door outer panel middle reinforcement layer, and the vehicle door outer panel appearance layer is connected to the front side of the vehicle door outer panel middle reinforcement layer.

[0005] In the above-mentioned improved structure of the vehicle door outer panel, the middle reinforcement layer of the vehicle door outer panel and the reinforcement ribs are integrally molded by compression injection molding.

[0006] As another embodiment, in the above-mentioned improved structure of the vehicle door outer panel, the reinforcing ribs are glued or welded to the back side of the middle reinforcing layer of the vehicle door outer panel.

[0007] In the above-mentioned improved structure of the vehicle door outer panel, the vehicle door outer panel appearance layer is integrally injection-molded on the front side of the middle reinforcement layer of the vehicle door outer panel.

[0008] In the above-mentioned improved structure of the vehicle door outer panel, the middle reinforcement layer of the vehicle door outer panel is a continuous fiber reinforced thermoplastic composite part.

[0009] In the above-mentioned improved structure of the vehicle door outer panel, the thickness of the middle reinforcement layer of the vehicle door outer panel is 0.1-1.2 mm.

[0010] In the above-mentioned improved structure of the vehicle door outer panel, the thickness of the middle reinforcement layer of the vehicle door outer panel is 0.2 mm.

[0011] In the above-mentioned improved structure of the vehicle door outer panel, the reinforcing rib is a thermoplastic resin part, the reinforcing rib is composed of a plurality of reinforcing heads, the reinforcing heads include a connecting portion, and the thickness of the connecting portion is 1.5-3 mm.

[0012] As another embodiment, in the above-mentioned improved structure of a vehicle door outer panel, the reinforcing rib is composed of a plurality of reinforcing heads, and the reinforcing head also includes a protruding portion integrally connected to the connecting portion, wherein the protruding portion includes a protruding connecting portion.

[0013] In the above-mentioned improved structure of the vehicle door outer panel, the exterior layer of the vehicle door outer panel is a thermoplastic resin part, and the thickness of the exterior layer of the vehicle door outer panel is 2.0-3.0 mm.

[0014] Compared with the prior art, the advantages of the utility model are that the rigidity of the door outer panel is improved, the product refinement of the outer panel is enhanced, the side of the car body is more beautiful, and the problem of serious thermal deformation of traditional plastic outer panels is significantly improved. The dimensional stability is better, and the weight is significantly reduced compared with metal door outer panels, which can be reduced by about 40%-50%. The material uses thermoplastic resin as the matrix and can be recycled and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the improved structure of the door outer panel of the vehicle;

[0016] Figure 2 It is a schematic diagram of the structure of the improved structure of the vehicle door outer panel after integral injection molding;

[0017] Figure 3 It is a structural schematic diagram of the combination of the middle reinforcement layer and the reinforcement ribs of the door outer panel;

[0018] Figure 4 It is a structural diagram of the combination of the middle reinforcement layer of the door outer panel and another kind of reinforcement rib. DETAILED DESCRIPTION

[0019] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0020] In the figure, the exterior layer 100 of the vehicle door outer panel; the middle reinforcement layer 200 of the vehicle door outer panel; the reinforcement rib 300; the connecting part 301; and the protruding part 302.

[0021] like Figure 1As shown, the improved structure of the vehicle door outer panel includes a vehicle door outer panel appearance layer 100, a vehicle door outer panel middle reinforcement layer 200 and a reinforcement rib 300, wherein the reinforcement rib 300 is connected to the back side of the vehicle door outer panel middle reinforcement layer 200, and the vehicle door outer panel appearance layer 100 is connected to the front side of the vehicle door outer panel middle reinforcement layer 200, wherein the reinforcement rib 300 can be connected to the back side of the vehicle door outer panel middle reinforcement layer 200 by gluing, welding or injection molding, and the vehicle door outer panel appearance layer 100 can also be connected to the front side of the vehicle door outer panel middle reinforcement layer 200 by gluing or injection molding. In the present embodiment, the vehicle door outer panel middle reinforcement layer 200 and the reinforcement rib 300 are integrally molded by compression molding, and the vehicle door outer panel appearance layer 100 is integrally injection molded on the front side of the vehicle door outer panel middle reinforcement layer 200.

[0022] like Figure 3 As shown, the structure of the reinforcing rib 300 is different from the structure of an ordinary reinforcing layer or reinforcing plate. The reinforcing layer or reinforcing plate is an integral structure, and the main design of the reinforcing rib 300 is iteratively optimized according to the results of computer mold flow analysis and thermal deformation analysis, which is equivalent to forming a partially hollowed-out structure on the back of the middle reinforcing layer 200 of the entire door outer panel. The reinforcing rib 300 can be divided into two forms. The first is that the reinforcing rib 300 is composed of a plurality of reinforcing heads, and the reinforcing head includes a connecting portion 301. In order to further enhance the strength, as shown in FIG. Figure 4 As shown, another embodiment is that the reinforcing rib 300 is composed of a plurality of reinforcing heads, and the reinforcing head is composed of a connecting portion 301 and a protruding portion 302 , wherein the protruding portion 302 protrudes from the connecting portion 301 .

[0023] Specifically, the door outer panel is firstly formed by compression molding of the door outer panel middle reinforcement layer 200 and the reinforcement rib 300, and then the door outer panel appearance layer 100 is injection molded. The patent utilizes the reinforcement rib 300 to increase the rigidity of the door outer panel, improve the product refinement of the outer panel, make the side of the car body more beautiful, significantly improve the problem of serious heat deformation of traditional plastic outer panels, and have better dimensional stability.

[0024] like Figure 2 as well as Figure 3As shown, the middle reinforcement layer 200 of the door outer panel is a continuous fiber reinforced thermoplastic composite, the thickness of the middle reinforcement layer 200 of the door outer panel is 0.1-1.2mm, and it is optimized to 0.2mm in the embodiment. The reinforcing rib 300 is a thermoplastic resin part, and the reinforcing rib 300 is composed of a plurality of reinforcing heads, and the reinforcing head includes a connecting portion 301, and the thickness of the connecting portion 301 is 1.5-3mm. The actual connecting portion 301 of the reinforcing rib 300 is optimized to 2.5mm. The appearance layer 100 of the door outer panel is a thermoplastic resin part, and the thickness of the appearance layer 100 of the door outer panel is 2.0-3.0mm, and it is actually optimized to 2.2mm. The thermoplastic resin part and the continuous fiber reinforced thermoplastic composite material used here can significantly reduce the weight compared with the metal door outer panel, and can reduce the weight by about 40%-50%. In addition, the material uses thermoplastic resin as the matrix and can be recycled and reused. The entire door outer panel has a good sense of refinement and the side of the car body is more beautiful.

[0025] The specific embodiments described in this article are merely examples of the spirit of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications to the described specific embodiments or replace them in similar ways, but they will not deviate from the scope defined by the spirit of the present invention.

Claims

1. An improved structure of a vehicle door outer panel, characterized in that: It includes a door outer panel appearance layer, a door outer panel middle reinforcement layer and reinforcement ribs, wherein the reinforcement ribs are connected to the back side of the door outer panel middle reinforcement layer, and the door outer panel appearance layer is connected to the front side of the door outer panel middle reinforcement layer; the reinforcement ribs are thermoplastic resin parts, the reinforcement ribs are composed of multiple reinforcement heads, the reinforcement heads include a connecting part, the thickness of the connecting part is 1.5-3mm; the reinforcement head also includes a protruding part integrally connected to the connecting part, wherein the protruding part is a protruding connecting part.

2. The improved structure of a vehicle door outer panel according to claim 1, characterized in that: The middle reinforcement layer and the reinforcement ribs of the vehicle door outer panel are integrally molded by compression injection molding.

3. The improved structure of a vehicle door outer panel according to claim 1, characterized in that: The reinforcing ribs are glued or welded to the back side of the middle reinforcing layer of the vehicle door outer panel.

4. An improved structure of a vehicle door outer panel according to claim 2 or 3, characterized in that: The exterior layer of the vehicle door outer panel is integrally injection-molded on the front side of the middle reinforcement layer of the vehicle door outer panel.

5. The improved structure of a vehicle door outer panel according to claim 1, characterized in that: The middle reinforcement layer of the vehicle door outer panel is a continuous fiber reinforced thermoplastic composite part.

6. The improved structure of a vehicle door outer panel according to claim 5, characterized in that: The thickness of the middle reinforcement layer of the door outer panel is 0.1-1.2 mm.

7. The improved structure of a vehicle door outer panel according to claim 6, characterized in that: The thickness of the middle reinforcement layer of the door outer panel is 0.2 mm.

8. The improved structure of a vehicle door outer panel according to claim 4, characterized in that: The exterior layer of the vehicle door outer panel is a thermoplastic resin part, and the thickness of the exterior layer of the vehicle door outer panel is 2.0-3.0 mm.

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