A hot stamping structure for a door exterior trim

Abstract

The utility model provides a kind of door outer trim hot stamping structure, it is related to the technical field of automobile parts, and it includes: decorative plate, decorative plate outer end side is provided with outer plate, and six skeletons are installed in decorative plate inner side.This kind of door outer trim hot stamping structure is accurately positioned by positioning plate, positioning groove and positioning rib, clamping block, improves component assembly accuracy, solves the appearance defect caused by traditional positioning blur, and the structure strength is enhanced by hot melt welding connection, hollow skeleton realizes light weight, balance strength and appearance, and the flexibility of double-sided adhesive tape is connected to buffer tolerance, guarantee and vehicle adaptation smoothness and sealing property, while each design adaptation batch production, improve efficiency, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, specifically a hot stamping structure for exterior door trim. Background Technology

[0002] Against the backdrop of the rapid development of the automotive industry, exterior door trim, as an important component of the vehicle's appearance, not only needs to meet basic decorative functions but also needs to consider structural strength, assembly precision, and mass production feasibility. Its surface treatment process and structural design have become key links in improving the overall quality of the vehicle. Traditional exterior door trim has many pain points in production and assembly. On the one hand, the assembly of the outer panel and the base plate often lacks a precise pre-positioning structure, which leads to problems such as misalignment and uneven surface differences during installation, affecting the consistency of appearance. On the other hand, the connection process is simple. If only rigid connection is used, defects such as shrinkage marks and protrusions are easily generated on the surface, which destroys the smooth texture of the outer panel. On the other hand, it is difficult to guarantee the structural strength in long-term use, especially under conditions such as vehicle vibration and temperature changes, which may lead to the risk of falling off. To solve the above problems, there is an urgent need for an exterior door trim structure that integrates precise positioning, high-strength connection, flexible adaptation, and multi-process compatibility. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a hot stamping structure for door exterior trim, which improves assembly accuracy through precise positioning, solves appearance defects, enhances strength through hot melt welding, and achieves lightweighting through hollow frame, balances strength and appearance, and ensures vehicle compatibility through flexible tape to buffer tolerances, and is suitable for mass production, thereby improving efficiency and reducing costs.

[0004] The technical problem to be solved by this utility model is achieved by the following technical solution: A hot stamping structure for exterior door trim includes: a decorative panel, an outer panel being provided on one side of the outer end of the decorative panel, and six frames being installed on the inner side of the decorative panel.

[0005] Optionally, multiple positioning plates are installed on the inner side of the decorative panel, and multiple positioning grooves are opened on one side of the outer end of the decorative panel. Double-sided tape a is adhesively connected to one side of the inner wall of the outer panel, and the top of the double-sided tape a is attached to the decorative panel. The positioning plates, positioning grooves, and double-sided tape a connect the decorative panel to the outer panel.

[0006] Optionally, two positioning ribs and four locking blocks are installed on one side of the outer end of the decorative panel. The four locking blocks and the two positioning ribs are spaced apart from each other. Double-sided adhesive tape b is adhesively connected to both the inner side of the decorative panel and the inner side of the outer panel. The six skeletons are heat-fused to the decorative panel. The skeletons have a hollow rectangular structure, and the six skeletons are located outside the two positioning ribs and the four locking blocks, respectively. The locking blocks and positioning ribs are used to position the skeletons.

[0007] The beneficial effects of this utility model are: The advantages of this utility model are that it improves the assembly accuracy of components by precisely limiting the positioning of positioning plates, positioning grooves, positioning ribs, and locking blocks, solving the appearance defects caused by the ambiguity of traditional positioning, and enhances the structural strength through hot melt welding. The hollow frame achieves lightweighting, balancing strength and appearance. Furthermore, the flexible connection of double-sided tape buffers tolerances, ensuring smoothness and sealing for compatibility with the whole vehicle. At the same time, each design is suitable for mass production, improving efficiency and reducing costs. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0009] Figure 2 This is a schematic diagram of the outer panel structure of this utility model.

[0010] Figure 3 This is an exploded view of the decorative panel structure of this utility model.

[0011] Figure 4 For the present utility model Figure 1 Enlarged view of point A in the image.

[0012] Figures 1-4 In the middle: 1-Decorative panel; 101-Outer panel; 102-Frame; 2-Positioning plate; 201-Positioning groove; 3-Double-sided tape a; 4-Positioning rib; 401-Clip block; 5-Double-sided tape b. Detailed Implementation

[0013] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0014] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0015] like Figures 1-4 As shown, a hot stamping structure for door exterior decoration includes: a decorative panel 1, an outer panel 101 provided on one side of the outer end of the decorative panel 1, and six frames 102 installed on the inner side of the decorative panel 1.

[0016] Among them, the hot-melt welding process of the frame 102 with the outer panel 101 and the decorative panel 1 achieves molecular-level fusion after the materials are melted, which not only improves the overall structural strength, but also avoids the shrinkage defects that may occur in traditional connection methods. Combined with the precise control of the positioning structure and the flexible adaptation of the tape, the door exterior trim is finally unified in terms of high quality in appearance, high structural strength and adaptability to industrial mass production.

[0017] The decorative panel 1 has multiple positioning plates 2 installed on its inner side and multiple positioning grooves 201 opened on one side of its outer end. The multiple positioning plates 2 installed on the inner side of the decorative panel 1 and the multiple positioning grooves 201 opened on the outer end form a pre-positioning reference for the assembly of the outer panel 101 and the decorative panel 1 through the concave and convex structure. This restricts the relative displacement between the two in space and ensures that the initial installation position of the outer panel is accurate. Its advantages are that it can avoid misalignment and skew during assembly, provide a precise positional basis for subsequent tape pasting, simplify the assembly process, reduce manual alignment errors, improve assembly efficiency, and is suitable for mass production.

[0018] The outer panel 101 has a double-sided adhesive tape a3 attached to one side of its inner wall. The top of the double-sided adhesive tape a3 is attached to the decorative panel 1. The outer panel 101 is made of high-gloss black injection molding, and the brand characters can be hot-printed on the outer side of the outer panel 101. The function of the double-sided adhesive tape a3 is to further fix the outer panel 101 and the decorative panel 1 based on the pre-positioning of the positioning plate 2 and the positioning groove 201. At the same time, the flexible properties of the tape fill the small gaps between the two. The advantages are that compared with hard connection, there are no exposed connecting parts, the high-gloss black appearance of the outer panel 101 is not damaged, and it can buffer assembly tolerance, avoid uneven surface difference and excessive gaps, ensure the flatness of the appearance, and the pasting process is simple, suitable for automated batch operation, and can reduce production costs.

[0019] Two positioning ribs 4 and four locking blocks 401 are installed on one side of the outer end of the decorative panel 1. The four locking blocks 401 and the two positioning ribs 4 are spaced apart from each other. The function of the two positioning ribs 4 and the four locking blocks 401 is to form multi-directional limiting on the frame 102 from the outside, and to clarify the installation position of the frame 102 on the decorative panel 1. The advantage is that it can accurately control the position of the frame 102, ensure that it does not deviate when welding with the decorative panel 1, and ensure the stability of the structure after welding. The spaced-apart layout can limit different parts of the frame 102 individually, improve the positioning accuracy, and the structure is simple, which is convenient for mold processing and mass production.

[0020] Double-sided tape b5 is adhesively connected to both the inner side of the decorative panel 1 and the inner side of the outer panel 101. The function of the two double-sided tapes b5 is to connect and fix the door exterior trim assembly to the door sheet metal, and at the same time fill the gap between the assembly and the sheet metal. Its advantages are that the flexible connection can absorb the manufacturing tolerances of the door sheet metal and the assembly, avoid stress deformation caused by rigid assembly, and can focus on controlling the assembly gap and surface difference at both ends of the assembly, ensuring a smooth connection with the overall vehicle appearance, improving sealing, and eliminating the need for drilling or welding, without damaging the door sheet metal and assembly structure, making disassembly and assembly convenient and facilitating later maintenance.

[0021] The six skeletons 102 are welded to the decorative panel 1. The skeletons 102 are hollow rectangular structures, and the six skeletons 102 are located on the outside of the two positioning ribs 4 and the four clamping blocks 401, respectively. The six skeletons 102 are hot-melt welded to the decorative panel 1. The hollow rectangular structure is located on the outside of the two positioning ribs 4 and the four clamping blocks 401, respectively. The function is to provide support for the decorative panel 1 by welding and fixing it. The rigidity of the hollow rectangular structure is used to disperse external forces and prevent the decorative panel 1 from deforming. The outer layout ensures that the skeletons 102 and the positioning structure work together to bear the force. The advantage is that the hollow structure reduces the overall weight while ensuring strength, which is in line with the trend of lightweight design and saves material costs. The six distributed layout can evenly distribute the force on the decorative panel 1, improve the deformation resistance of the overall structure. The hot-melt welding connection is stronger than the adhesive bonding and there are no exposed connectors, which avoids affecting the appearance. In conjunction with the positioning ribs 4 and the clamping blocks 401, it can ensure the accurate positioning of the skeletons 102 and further improve the structural stability of the assembly.

[0022] Working principle: When the outer panel 101 is assembled with the decorative panel 1, the positioning plate 2 and the positioning groove 201 form a pre-positioning reference through the concave-convex structure, first limiting the relative displacement of the two in space to ensure the accuracy of the initial position of the outer panel installation. Then, the double-sided adhesive tape a3 on the inner wall of the outer panel 101 is tightly attached to the decorative panel 1, further fixing it on the basis of pre-positioning. At the same time, the flexibility of the tape can buffer the assembly tolerance and avoid uneven surface difference or excessive gap caused by hard connection. Then, the six skeletons 102 are placed on the outside of the two positioning ribs 4 and the four clamping blocks 401 respectively, and the two positioning ribs 4 and the four clamping blocks 401 are used to fix the outer panel. 1. To facilitate the positioning of the six frame pieces 102, one side of the frame piece 102 is welded to the decorative panel 1. The hollow design of the frame piece 102 reduces weight and, together with the dispersed layout of the multiple frame pieces 102, provides uniform structural support for the decorative panel. After the various components are integrated into the door exterior trim assembly through processes such as hot stamping and hot melt welding, two double-sided adhesive tapes b5 on the inside of the decorative panel 1 connect the assembly to the door sheet metal. The tapes not only provide reliable adhesion but also absorb the manufacturing tolerances between the door sheet metal and the assembly, focusing on controlling the assembly gaps and surface differences at both ends of the assembly to ensure a smooth connection with the overall vehicle appearance.

[0023] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0024] The above provides a detailed description of a hot stamping structure for exterior door trim provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A hot stamping structure for exterior door trim, characterized in that, include: Decorative panel (1), with an outer panel (101) on one side of the outer end of the decorative panel (1), and six frames (102) installed on the inner side of the decorative panel (1); Multiple positioning plates (2) are installed on the inner side of the decorative panel (1), and multiple positioning grooves (201) are opened on one side of the outer end of the decorative panel (1). Double-sided tape a (3) is adhesively connected to one side of the inner wall of the outer panel (101), and the top of the double-sided tape a (3) is attached to the decorative panel (1); Two positioning ribs (4) and four locking blocks (401) are installed on one side of the outer end of the decorative panel (1), and the four locking blocks (401) and the two positioning ribs (4) are separated from each other; Double-sided adhesive tape b (5) is adhesively connected to the inner side of the decorative panel (1) and the inner side of the outer panel (101). The six skeletons (102) are hot-melt welded to the decorative panel (1). The skeletons (102) are hollow rectangular structures, and the six skeletons (102) are located on the outside of the two positioning ribs (4) and the four card blocks (401).

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