Automobile exterior trimming panel reinforcing structure

Abstract

The utility model relates to an automobile exterior trimming panel reinforcing structure which comprises a plastic exterior trimming panel, an automobile body metal plate, a reinforcing plate and a double-sided tape, the plastic exterior trimming panel and the automobile body metal plate are spaced, and the reinforcing plate is fixedly connected to the surface, facing the automobile body metal plate, of the plastic exterior trimming panel through the double-sided tape. A surface of the reinforcing plate facing the vehicle body sheet metal is spaced apart from the vehicle body sheet metal. According to the automobile exterior trimming panel reinforcing structure, the reinforcing plate is installed between the automobile plastic exterior trimming panel and the automobile body metal plate, the reinforcing plate is glued to the plastic exterior trimming panel to form a double-layer plate structure, and the local rigidity and strength of the plastic exterior trimming panel are remarkably improved on the premise that the product weight is not obviously increased.

Description

Technical Field

[0001] The utility model relates to an automotive plastic exterior panel, and more particularly to a reinforcing structure for an automotive exterior panel. Background Art

[0002] At present, automotive lightweighting is a major trend. Plastic materials have the advantage of low density compared with metal materials. Using plastic materials on the body exterior panels can effectively reduce the weight of the vehicle body. However, compared with metal materials, plastic materials have weaker stiffness and strength properties, and automotive manufacturers usually have certain strength and stiffness requirements for automotive exterior panels.

[0003] In view of the insufficient stiffness and strength of plastic exterior panels, it is known to directly design a rib structure in the back region of the plastic exterior panel. There is a contradiction here. If the thickness of the rib is too thick, there will be a shrink mark problem on the appearance of the plastic exterior panel, and the appearance is unacceptable. If the appearance requirements are to be met, the thickness of the rib can only be controlled within a very thin range, which has a limited strengthening effect on the plastic exterior panel.

[0004] It is also known to add a plastic bracket that supports the body sheet metal to the back of the plastic exterior panel. There is no direct connection between the plastic bracket and the exterior panel. It keeps conforming to the outer panel and has a gap, transferring the stiffness and strength from the body sheet metal to the plastic exterior panel. However, this will significantly increase the weight of the whole vehicle, especially significantly if the gap between the plastic exterior panel and the body sheet metal is large. Moreover, adding a plastic bracket part that supports the body sheet metal will also significantly increase the cost. An installation fastening structure needs to be designed between the added bracket part and the body sheet metal, and sufficient dimensional accuracy requirements are needed to ensure the installation matching effect. There is also a risk of abnormal noise between the added bracket part and the body sheet metal, and between the bracket part and the plastic exterior panel part. Summary of the Utility Model

[0005] In order to solve the problems such as appearance or cost caused by the reinforcement of plastic exterior panels in the above-mentioned prior art, the utility model provides a reinforcing structure for an automotive exterior panel.

[0006] According to the reinforcing structure for an automotive exterior panel of the utility model, it includes a plastic exterior panel, a body sheet metal, a reinforcing plate, and a double-sided tape. Among them, the plastic exterior panel and the body sheet metal are kept spaced apart. The reinforcing plate is fixedly connected to the surface of the plastic exterior panel facing the body sheet metal through the double-sided tape, and the surface of the reinforcing plate facing the body sheet metal is kept spaced apart from the body sheet metal.

[0007] Preferably, the middle part of the plastic exterior panel has a region to be reinforced. The reinforcing plate is bonded to the plastic exterior panel using the double-sided tape, making the region to be reinforced of the plastic exterior panel into a double-layer plate.

[0008] Preferably, the reinforcing plate is a foamed polypropylene block.

[0009] Preferably, the reinforcing plate is a thin-walled plastic frame.

[0010] Preferably, the reinforcing plate includes a flat plate and a reinforcing frame. One side of the flat plate is adhesively bonded to the plastic exterior trim panel through a double-sided tape, and the reinforcing frame is a frame structure fixedly connected to the other side of the flat plate.

[0011] Preferably, the reinforcing frame includes a frame and reinforcing ribs. The frame extends around the perimeter of the flat plate, and the reinforcing ribs are connected within the frame to strengthen the strength of the reinforcing plate itself.

[0012] According to the automotive exterior trim panel reinforcement structure of the present utility model, the reinforcing plate is installed between the automotive plastic exterior trim panel and the body sheet metal. By adhesively bonding the reinforcing plate to the plastic exterior trim panel, a double-layer plate structure is formed, which significantly improves the local stiffness and strength of the plastic exterior trim panel without significantly increasing the product weight. Description of the Drawings

[0013] Figure 1 is a side view of the automotive exterior trim panel reinforcement structure according to the present utility model.

[0014] Figure 2 is Figure 1 a schematic structural view of the plastic exterior trim panel of

[0015] Figure 3 is a schematic structural view of the automotive exterior trim panel reinforcement structure according to a preferred embodiment of the present utility model.

[0016] Figure 4 is a schematic structural view of the reinforcing plate of the automotive exterior trim panel reinforcement structure according to another preferred embodiment of the present utility model.

[0017] Figure 5 is Figure 4 a partial detail view of Detailed Description of the Preferred Embodiments

[0018] The following presents the preferred embodiments of the present utility model in conjunction with the accompanying drawings and describes them in detail.

[0019] As Figure 1 shown, the automotive exterior trim panel reinforcement structure according to the present utility model includes a plastic exterior trim panel 1, a body sheet metal 2, a reinforcing plate 3, and a double-sided tape 4. Among them, the plastic exterior trim panel 1 and the body sheet metal 2 are spaced apart. The reinforcing plate 3 is fixedly connected to the surface of the plastic exterior trim panel 1 facing the body sheet metal 2 through the double-sided tape 4, and the surface of the reinforcing plate 3 facing the body sheet metal 2 is spaced apart from the body sheet metal 2.

[0020] In this way, the reinforcing plate 3 is bonded to the back of the plastic exterior panel 1 by the double-sided tape 4 to form a double-layer plate structure, which plays a role in strengthening the strength. The added reinforcing plate 3 and the plastic exterior panel 1 are connected by bonding without the risk of abnormal noise, and the reinforcing plate 3 and the body sheet metal 2 are not in contact and there is no risk of abnormal noise. In this way, the utility model does not need to design an installation structure on the body sheet metal 2. Since the reinforcing plate 3 is glued to the plastic exterior panel 1, the dimensional accuracy requirement is not high, and the installation operation is convenient. Moreover, the utility model does not need to design a reinforcing rib structure on the back of the plastic exterior panel 1, nor does it need to design an installation structure for the reinforcing plate 3, which will not affect the appearance of the plastic exterior panel 1.

[0021] like Figure 2 As shown, the middle part of the plastic exterior panel 1 has a region 11 to be reinforced, and the reinforcing plate 3 is bonded to the plastic exterior panel 1 using a double-sided tape 4, so that the region 11 to be reinforced of the plastic exterior panel 1 becomes a double-layer panel, increasing the local moment of inertia of the cross section, and effectively improving the rigidity and strength of the region 11 to be reinforced. In this embodiment, the region 11 to be reinforced is rectangular.

[0022] like Figure 3 As shown, in a preferred embodiment of the utility model, the reinforcing plate 3 is block-shaped and made of lightweight foamed polypropylene. Compared with the weight of the exterior panel product itself, the weight of the newly added reinforcing plate 3 is not significant. In this embodiment, the weight of the plastic exterior panel 1 is 500g, the weight of the reinforcing plate 3 is 30g, and the added weight is about 6%. Compared with the entire car, the weight impact is even smaller.

[0023] like Figure 4 As shown, in another preferred embodiment of the present invention, the reinforcing plate 3 is frame-shaped and made of plastic, that is, the reinforcing plate 3 is formed as a thin-walled plastic part, and the weight increase is also not obvious. Figure 5 As shown, the reinforcing plate 3 includes a flat plate 31 and a reinforcing frame 32, wherein one side of the flat plate 31 is bonded to the plastic exterior panel 1 by a double-sided adhesive tape 4, and the reinforcing frame 32 is a frame-shaped structure fixedly connected to the other side of the flat plate 31. Figure 4 The reinforcement frame 32 includes a frame 321 and reinforcement ribs 322, wherein the frame 321 extends closed around the circumference of the flat plate 31, and the reinforcement ribs 322 are connected in the frame 321 to strengthen the strength of the reinforcement plate 3. In this embodiment, the reinforcement ribs 322 are provided by mutually perpendicular connecting ribs. It should be understood that the arrangement (including direction, spacing, height, wall thickness, etc.) of the reinforcement ribs 322 can be adjusted as needed.

[0024] The above are only the preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various changes can be made to the above embodiments of the present utility model. That is, all simple, equivalent changes and modifications made in accordance with the claims and the content of the specification of the present utility model application fall within the scope of protection of the claims of the present utility model patent. Those not described in detail in the present utility model are all conventional technical contents.

Claims

1. A reinforcement structure for an automobile exterior panel, characterized in that: The automobile exterior trim reinforcement structure includes a plastic exterior trim, a body sheet metal, a reinforcement plate and a double-sided tape, wherein the plastic exterior trim and the body sheet metal are kept apart, the reinforcement plate is fixedly connected to the surface of the plastic exterior trim facing the body sheet metal by the double-sided tape, and the surface of the reinforcement plate facing the body sheet metal is kept apart from the body sheet metal.

2. The automobile exterior panel reinforcement structure according to claim 1, characterized in that: The middle part of the plastic exterior panel has a region to be reinforced, and the reinforcement plate is bonded to the plastic exterior panel using double-sided adhesive tape, so that the region to be reinforced of the plastic exterior panel becomes a double-layer panel.

3. The automobile exterior panel reinforcement structure according to claim 1, characterized in that: The reinforcement plate is a foamed polypropylene block.

4. The automobile exterior panel reinforcement structure according to claim 1, characterized in that: The reinforcement plate is a thin-walled plastic frame.

5. The automobile exterior panel reinforcement structure according to claim 4, characterized in that: The reinforcing plate comprises a flat plate and a reinforcing frame, wherein one side of the flat plate is bonded to the plastic exterior panel by a double-sided adhesive tape, and the reinforcing frame is a frame-shaped structure fixedly connected to the other side of the flat plate.

6. The automobile exterior panel reinforcement structure according to claim 5, characterized in that: The reinforcement frame comprises a frame and reinforcement ribs, wherein the frame extends closed around the circumference of the flat plate, and the reinforcement ribs are connected in the frame to strengthen the strength of the reinforcement plate itself.

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