Limiting structure matched with two mesh enclosures with different material thicknesses

Abstract

The invention discloses a limiting structure matched with two mesh enclosures with different material thicknesses, and belongs to the technical field of automotive interiors. The limiting structure comprises a plastic mesh enclosure, a metal mesh enclosure and an interior guard plate body; a containing groove is formed in the interior trim protection plate body. The shape of the placing groove is matched with that of the plastic mesh enclosure and that of the metal mesh enclosure; a group of clamping pin holes are formed in the groove bottom of the placing groove, and the group of clamping pin holes are distributed along the contour of the placing groove; a group of first limiting blocks and a group of second limiting blocks are fixedly connected to the groove bottom of the placing groove, and the group of first limiting blocks and the group of second limiting blocks are distributed along the contour of the placing groove; by designing the structural sizes of the mesh enclosures with different material thicknesses and adjusting the size of the limiting structure of the interior guard plate corresponding to the mesh enclosures, the mesh enclosures with different material thicknesses can be matched with the same interior guard plate body, the interior guard plate body is not changed, the mesh enclosures can still be installed and limited, and the gap between the mesh enclosures and the interior guard plate is controlled; and the gap between the net cover on the appearance and the interior trim guard plate is kept consistent.

Description

Technical Field

[0001] This application belongs to the field of automotive interior technology, and specifically relates to a limiting structure for matching two mesh covers of different material thicknesses. Background Technology

[0002] The limiting structure for matching speaker grilles and interior trim panels is generally designed based on the thickness of the grille material. For grilles of different thicknesses, the corresponding limiting structure has a basically fixed position on the interior trim panel. This means that if you only want to replace the grille with a different material, such as changing from metal to plastic, or if you want to use both metal and plastic grilles simultaneously, the limiting structure of the interior trim panel cannot accommodate both. Figure 1 As shown, generally two types of mesh covers are developed to correspond to the interior trim panel body, or one type of mesh cover cannot be designed with a limiting structure and relies solely on contour limiting. In this case, the matching of one type of mesh cover will result in uneven gaps between the mesh cover and the interior trim panel body. Summary of the Invention

[0003] To address the aforementioned issues, this application provides a limiting structure that matches two mesh covers with different material thicknesses.

[0004] A limiting structure for matching two mesh covers of different thicknesses includes a plastic mesh cover, a metal mesh cover, and an interior trim panel body. The interior trim panel body has a placement groove. The shape of the placement groove matches the shape of the plastic mesh cover and the metal mesh cover. A set of locking holes is provided at the bottom of the placement groove, and these locking holes are distributed along the contour of the placement groove. A set of first limiting blocks and a second limiting block are fixedly connected to the bottom of the placement groove, and both the first and second limiting blocks are distributed along the contour of the placement groove. Locking feet are fixed to both the plastic mesh cover and the metal mesh cover at positions relative to the locking holes. The first limiting block is adapted to the plastic mesh cover, and the second limiting block is adapted to the metal mesh cover. A notch is provided in the plastic mesh cover at a position relative to the second limiting block. The distance between the sidewall of the second limiting block and the wall of the placement groove is less than the distance between the sidewall of the first limiting block and the wall of the placement groove. The interior trim panel body and the first and second limiting blocks are integrally formed.

[0005] Preferably, the thickness of the metal mesh cover is 0.5mm-1mm; the thickness of the plastic mesh cover is 1.2mm-2.5mm; after the plastic mesh cover and the metal mesh cover are installed in the placement groove of the interior trim panel body, the limiting gap between the inner side wall of the plastic mesh cover and the side wall of the first limiting block is 0.1-0.15mm, the limiting gap between the inner side wall of the metal mesh cover and the side wall of the second limiting block is 0.1-0.15mm, and the installation gap between the outer side of the plastic mesh cover and the metal mesh cover and the side wall of the placement groove is 0.3-0.35mm.

[0006] Preferably, when the plastic mesh cover is installed, the gap between the bottom surface of the plastic mesh cover and the top of the first limiting block and the second limiting block is 0-0.1mm.

[0007] Preferably, both the first limiting block and the second limiting block have inclined surfaces on their sidewalls near the groove wall.

[0008] Preferably, the distance between the rounded corner root edge of the plastic mesh cover and the top surface of the notch groove is 0.2mm-0.3mm; Preferably, when the plastic mesh cover is installed in the placement groove, the gap between the two side walls of the notch groove and the two side walls of the second limiting block is 0.5mm-1mm, and the distance between adjacent second limiting blocks is 10mm-15mm. Preferably, when the plastic mesh cover and the metal mesh cover are installed in the placement groove, the distance between the bottom surface of the plastic mesh cover and the top of the groove wall is greater than 0.7 mm.

[0009] Preferably, the lower the design height of the first limiting block and the second limiting block, the greater the design distance between the bottom surface of the plastic mesh cover and the metal mesh cover and the top of the placement groove wall.

[0010] Preferably, the plastic mesh cover material is selected from PP+GF10, PP+GF15, PP+GF20, PP+GF30, PP+EPDM-T20, or PP-T20; the metal mesh cover material is selected from stainless steel SUS304 or aluminum alloy, and the thickness of stainless steel SUS304 is generally 0.5-0.8mm, while that of aluminum alloy is generally 0.8-1.2mm; the interior trim panel body material is selected from PP+EPDM-T20, PP+GF10, PP+GF15, PP+GF20, PP+GF30, or PP-T20, and the thickness of the interior trim panel body is 2.0mm-2.5mm.

[0011] Preferably, after the clips of the plastic mesh cover are inserted into the clip holes of the interior trim panel body, the clips of the plastic mesh cover and the interior trim panel body are welded together by a welding gun; after the clips of the metal mesh cover are inserted into the clip holes of the interior trim panel body, the metal mesh cover and the interior trim panel body are connected by bending and tightening the clips of the metal mesh cover.

[0012] Compared with the prior art, this application has the following advantages: By designing the structural dimensions of mesh covers with different material thicknesses, the size of the limiting structure of the interior trim panel is adjusted accordingly to match the mesh cover, so that mesh covers of different material thicknesses can be adapted to the same interior trim panel body. This ensures that the interior trim panel body remains unchanged, while the mesh cover can still be installed and limited, controlling the gap between the mesh cover and the interior trim panel, so that the gap between the exterior mesh cover and the interior trim panel remains consistent.

[0013] Other features and advantages of this application will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 is a schematic diagram of the uneven gap between the mesh cover and the interior trim panel provided in this application; Figure 2 is a three-dimensional schematic diagram of the metal mesh cover and interior trim panel body provided in this application; Figure 3 is a schematic diagram of the plastic mesh cover avoiding the notch of the second limiting block provided in this application; Figure 4 is a schematic diagram of the structural dimensions of the plastic mesh cover that avoids the second limiting block provided in this application; Figure 5 is a schematic diagram of the matching of the plastic mesh cover and interior trim panel provided in this application. Figure 1 ; Figure 6 is a schematic diagram of the matching of the plastic mesh cover and interior trim panel provided in this application. Figure 2 ; Figure 7 is provided in this application Figure 4 Schematic diagram of mid-section BB; Figure 8 is a cross-sectional view of the metal mesh cover and interior trim panel body provided in this application.

[0016] Illustrations: 1. Plastic mesh cover; 2. Metal mesh cover; 3. Interior trim panel body; 4. Placement slot; 5. First limiting block; 6. Second limiting block; 7. Clamping foot; 8. Clamping foot hole; 9. Notch groove. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of 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, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0018] A limiting structure for matching two mesh covers of different thicknesses includes a plastic mesh cover 1, a metal mesh cover 2, and an interior trim panel body 3; the interior trim panel body 3 has a placement groove 4; the shape of the placement groove 4 matches that of the plastic mesh cover 1 and the metal mesh cover 2; a set of locking holes 8 are provided at the bottom of the placement groove 4, and the set of locking holes 8 are distributed along the contour of the placement groove 4; a set of first limiting blocks 5 and a set of second limiting blocks 6 are fixedly connected to the bottom of the placement groove 4, and both the set of first limiting blocks 5 and the set of second limiting blocks 6 are along the contour of the placement groove 4. The contour distribution of the groove 4; both the plastic mesh cover 1 and the metal mesh cover 2 are fixedly connected to the foot 7 at the position of the foot hole 8; the first limiting block 5 is adapted to the plastic mesh cover 1, the second limiting block 6 is adapted to the metal mesh cover 2, and the plastic mesh cover 1 is provided with a notch 9 at the position of the second limiting block 6; the distance between the side wall of the second limiting block 6 and the groove wall of the placement groove 4 is less than the distance between the side wall of the first limiting block 5 and the groove wall of the placement groove 4; the interior trim panel body 3 and the first limiting block 5 and the second limiting block 6 are integrated.

[0019] The thickness of the metal mesh cover 2 is 0.5mm-1mm; the thickness of the plastic mesh cover 1 is 1.2mm-2.5mm; after the plastic mesh cover 1 and the metal mesh cover 2 are installed in the placement groove 4 of the interior trim panel body 3, the limiting gap between the inner side wall of the plastic mesh cover 1 and the side wall of the first limiting block 5 is 0.1-0.15mm, the limiting gap between the inner side wall of the metal mesh cover 2 and the side wall of the second limiting block 6 is 0.1-0.15mm, and the installation gap between the outer side of the plastic mesh cover 1 and the metal mesh cover 2 and the side wall of the placement groove 4 is 0.3-0.35mm.

[0020] When the plastic mesh cover 1 is installed, the gap between the bottom surface of the plastic mesh cover 1 and the top of the first limiting block 5 and the second limiting block 6 is 0-0.1mm.

[0021] The first limiting block 5 and the second limiting block 6 both have inclined surfaces on the side walls of the groove wall near the placement groove 4.

[0022] The distance between the rounded corner root edge of the plastic mesh cover 1 and the top surface of the notch groove 9 is 0.2mm-0.3mm.

[0023] When the plastic mesh cover 1 is installed in the placement groove 4, the gap between the two side walls of the notch groove 9 and the two side walls of the second limiting block 6 is 0.5mm-1mm, and the distance between adjacent second limiting blocks 6 is 10mm-15mm.

[0024] When the plastic mesh cover 1 and the metal mesh cover 2 are installed in the placement groove 4, the distance between the bottom surface of the plastic mesh cover 1 and the metal mesh cover 2 and the top of the groove wall of the placement groove 4 is greater than 0.7mm.

[0025] The lower the design height of the first limiting block 5 and the second limiting block 6, the greater the design distance between the bottom surface of the plastic mesh cover 1 and the metal mesh cover 2 and the top of the wall of the placement groove 4.

[0026] The plastic mesh cover 1 is made of PP+GF10, PP+GF15, PP+GF20, PP+GF30, PP+EPDM-T20, or PP-T20; the metal mesh cover 2 is made of stainless steel SUS304 or aluminum alloy, with the stainless steel SUS304 generally having a thickness of 0.5-0.8mm and the aluminum alloy generally having a thickness of 0.8-1.2mm; the interior trim panel body 3 is made of PP+EPDM-T20, PP+GF10, PP+GF15, PP+GF20, PP+GF30, or PP-T20, with the interior trim panel body 3 having a thickness of 2.0mm-2.5mm.

[0027] After the clips 7 of the plastic mesh cover 1 are inserted into the clip holes 8 of the interior trim panel body 3, the clips 7 of the plastic mesh cover 1 and the interior trim panel body 3 are welded together by a welding gun; after the clips 7 of the metal mesh cover 2 are inserted into the clip holes 8 of the interior trim panel body 3, the metal mesh cover 2 and the interior trim panel body 3 are connected by bending and tightening the clips 7 of the metal mesh cover 2.

[0028] The mesh cover covered in this application is installed onto the clip hole 8 of the interior trim panel body 3 by clip 7, and the gap surface difference between the mesh cover (metal mesh cover 2 and plastic mesh cover 1) and the trim panel body is ensured by limiting structure (first limiting block 5 and second limiting block 6).

[0029] The gap between the mesh cover and the interior trim panel body 3 is generally 0.3mm (DTS definition) for installation, and 0.1mm for the limiting gap of the interior trim panel. Mesh covers are typically made of different materials, such as plastic mesh cover 1 and metal mesh cover 2. Plastic mesh cover 1 is designed to be 1.2mm thick, while metal mesh cover 2 is designed to be 0.5mm thick. Figure 5As shown, 'a' represents the installation gap (defined by DTS) of 0.3mm, 'b' represents the thickness of the mesh cover (b1=1.2mm for plastic mesh cover 1, b2=0.5mm for metal mesh cover 2), and 'c' represents the limiting gap value. Now, we define a+b+c=L. The values ​​of 'a' and 'c' are fixed values ​​that ensure the mesh cover and interior trim panel body 3 meet the limiting design requirements. The value of 'b' varies depending on the thickness of the mesh cover, so the value of 'L' will change accordingly. In actual parts production, only one type of 'L' value can be produced for the interior trim panel body 3. Therefore, only one type of mesh cover with a specific 'b' value can be selected for matching. If different mesh covers with different 'b' values ​​are to be used, the 'L' value of the interior trim panel body 3 will change. This necessitates producing another type of interior trim panel body 3 with a different 'b' value, leading to an increase in the number of parts for the interior trim panel body 3 due to changes in 'b' value, significantly increasing costs. Furthermore, on the same production line, it is necessary to prevent differences between two different 'b' values, resulting in wasted manpower and time, which is detrimental to production.

[0030] This application can change the limiting structure design layout of the interior trim panel body 3 and adjust the structural matching scheme of one of the mesh covers to achieve that mesh covers with different b values ​​can also be assembled on the same interior trim panel body 3, while the a and c values ​​of each mesh cover are the same, so that the limiting effect of the mesh cover is consistent in terms of appearance matching.

[0031] The thickness structure of the flange of plastic mesh cover 1 is now being adjusted, such as... Figure 3 As shown, notches and grooves 9, as indicated by the arrows, are evenly cut around the perimeter of the plastic mesh cover 1. The design dimensions of these notches and grooves 9 are as follows: Figure 4 As shown, the height of the uppermost edge of the notch is 0.2mm-0.3mm from the lower edge of the rounded corner of the mesh cover. The gap g between the two side walls of the notch groove 9 and the second limiting block 6 is 0.5mm-1mm. The distance W between the two second limiting blocks 6 is 10mm-15mm.

[0032] When the plastic mesh cover 1 is installed in the placement groove 4, such as Figure 5 and Figure 6 The diagram shows how the first limiting block 5 limits the plastic mesh cover 1 to ensure the gap surface difference. Figure 7 yes Figure 4 The BB section shown represents the plastic mesh cover 1 in the following configuration: Figure 3 The transverse cross section of the notch 9 of the second limiting block 6 shown is provided, where the value of L2 is equal to... Figure 8The sum of a+b2+c in the metal mesh cover 2 is shown. The thickness b1 of the plastic mesh cover 1 is generally 1.2mm-2.5mm, while the thickness b2 of the metal mesh cover 2 is generally 0.5mm-1.0mm. Therefore, the b1 value of the plastic mesh cover 1 is larger than the b2 value of the metal mesh cover 2. Thus, the metal mesh cover 2 can often be inserted into the interior trim panel body 3 that matches the plastic mesh cover 1. However, it cannot accurately limit the position to control the value a; it can only rely on the contours of the metal mesh cover 2 and the interior trim panel body 3 for positioning. This results in an unstable value a. Figure 3 As shown in the design principle, the notch 9 provided by the plastic mesh cover 1 can be used to arrange the second limiting block 6 of the metal mesh cover 2. Since the thickness b2 of the metal mesh cover 2 is less than the thickness b1 of the plastic mesh cover 1, the thickness of the metal mesh cover 2 can be arbitrarily selected between 0.5mm and 1.0mm. Figure 3 and Figure 4 The notch 9 area of ​​the plastic mesh cover 1 shown is designed to satisfy b2 of the metal mesh cover 2, as referenced. Figure 8 The design shown corresponds to b2.

[0033] Based on the previously described design where the plastic mesh cover 1 provides a limiting position for the metal mesh cover 2 via a notch and slot 9, both the metal mesh cover 2 and the plastic mesh cover 1 can use the same interior trim panel body 3. However, the notch in the plastic mesh cover 1 also affects the appearance; the notch position and the matching point with the interior trim panel body 3 should not be visible. Therefore, it is necessary to define the constraint on the relationship between the notch in the plastic mesh cover 1 and the interior trim panel. Based on the aforementioned design principles, such as... Figure 4 As shown, the f value must be between 0.2mm and 0.3mm. This value is to ensure that the boundary line of the appearance matching surface is below the root of the rounded corner of the plastic mesh cover 1 under normal circumstances, so the notch cannot exceed the rounded corner. Secondly, the plastic mesh cover 1 needs to fit tightly against its own limiting structure, such as... Figure 5 The value 'e' shown is a limiting factor for the surface difference between the plastic mesh cover 1 and the interior trim panel body 3; the value 'e' is 0-0.1 mm. Finally, as... Figure 7 As shown, there is a step difference d between the outer surface of the interior trim panel 3 and the notch in the plastic mesh cover 1. If the value of d is too small, the appearance may be unsightly, as the plastic mesh cover 1 will be visible through the gap, rendering the design meaningless. Therefore, based on multiple verifications using actual materials, the value of d is designed to be greater than 0.7mm. Figure 5 The height h of the limiting structure shown in the figure is such that the lower the h value, the larger the d value can be designed, which is more conducive to preventing the gap of the plastic mesh cover 1 from being seen through.

[0034] The structure designed in this application is that a notch 9 is opened in the plastic mesh cover 1, and in addition to the first limiting block 5 that provides the plastic mesh cover 1, the interior trim panel body 3 adds a second limiting block 6 structure that matches the metal mesh cover 2 at the notch 9 of the plastic mesh cover 1. Thus, both mesh covers of different material thicknesses (metal mesh cover 2 and plastic mesh cover 1) can be matched and limited by the interior trim panel body 3. The assembly of the mesh cover and interior trim panel body 3 is divided into two types, such as... Figure 2 As shown, the plastic mesh cover 1 and the metal mesh cover 2 have the same appearance and design as the clip 7, only differing in the thickness of the mesh material. Figure 2 The mesh covers shown are plastic mesh cover 1 or metal mesh cover 2, and the locking feet 7 of the interior trim panel body 3 are positioned identically. After the locking feet 7 of the plastic mesh cover 1 are inserted into the locking feet holes 8 of the interior trim panel body 3, they are welded together using a welding torch. After the locking feet 7 of the metal mesh cover 2 are inserted into the locking feet holes 8 of the interior trim panel body 3, they are connected to the interior trim panel by bending and tightening the locking feet 7. After both assembly processes are completed, a limiting structure is needed to control the c-value of the mesh cover's flange thickness to achieve the a-value of the gap between the exterior mesh cover and the interior trim panel body 3. Therefore, the design of the notch 9 of the plastic mesh cover 1 and the second limiting block 6 of the interior trim panel body 3 positioned precisely at the notch of the plastic mesh cover 1 allows one interior trim panel body 3 to simultaneously match two mesh covers of different thicknesses without requiring error prevention, resulting in a uniform and reliable appearance matching gap. This achieves a low-cost solution, eliminating the need to develop two different mesh interior trim panels.

[0035] The plastic mesh cover 1 of the structure designed in this application can be made of materials such as PP+GF10, PP+GF15, PP+GF20, PP+GF30, PP+EPDM-T20, and PP-T20. Generally, the metal mesh cover 2 is made of stainless steel SUS304 or aluminum alloy. The thickness of stainless steel SUS304 is generally 0.5-0.8mm, and that of aluminum alloy is generally 0.8-1.2mm. The interior trim panel body 3 is usually made of PP materials, including PP+EPDM-T20, PP+GF10, PP+GF15, and PP-T20. Materials such as +GF20, PP+GF30, and PP-T20 are used, and the thickness of the interior trim panel body 3 is usually 2.0mm-2.5mm. To better match the mesh cover and the interior trim panel, the plastic mesh cover 1 and the interior trim panel body 3 are usually made of the same material, because the plastic mesh cover 1 and the interior trim panel body 3 are usually welded together, and the same material has better compatibility. Since stainless steel (SUS304) has higher hardness and better elasticity than aluminum alloy, stainless steel is often the best choice for the metal mesh cover 2.

[0036] Although this application has been described in detail with reference to the foregoing embodiments, 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; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A limiting structure for matching mesh covers of two different material thicknesses, characterized in that: The system includes a plastic mesh cover (1), a metal mesh cover (2), and an interior trim panel body (3); the interior trim panel body (3) has a placement groove (4); the shape of the placement groove (4) matches that of the plastic mesh cover (1) and the metal mesh cover (2); a set of locking holes (8) are provided at the bottom of the placement groove (4), and the set of locking holes (8) are distributed along the contour of the placement groove (4); a set of first limiting blocks (5) and second limiting blocks (6) are fixedly connected to the bottom of the placement groove (4), and both the set of first limiting blocks (5) and the set of second limiting blocks (6) are distributed along the contour of the placement groove (4); Both the plastic mesh cover (1) and the metal mesh cover (2) are fixed with clips (7) at the positions of the clip holes (8); the first limiting block (5) is adapted to the plastic mesh cover (1), the second limiting block (6) is adapted to the metal mesh cover (2), and the plastic mesh cover (1) is provided with a notch (9) at the position of the second limiting block (6); the distance between the side wall of the second limiting block (6) and the wall of the placement groove (4) is less than the distance between the side wall of the first limiting block (5) and the wall of the placement groove (4); the interior trim panel body (3) and the first limiting block (5) and the second limiting block (6) are integrally set.

2. The limiting structure for matching two mesh covers of different material thicknesses according to claim 1, characterized in that: The thickness of the metal mesh cover (2) is 0.5mm-1mm; the thickness of the plastic mesh cover (1) is 1.2mm-2.5mm; after the plastic mesh cover (1) and the metal mesh cover (2) are installed in the placement groove (4) of the interior trim panel body (3), the limiting gap between the inner side wall of the plastic mesh cover (1) and the side wall of the first limiting block (5) is 0.1-0.15mm, the limiting gap between the inner side wall of the metal mesh cover (2) and the side wall of the second limiting block (6) is 0.1-0.15mm, and the installation gap between the outer side of the plastic mesh cover (1) and the metal mesh cover (2) and the side wall of the placement groove (4) is 0.3-0.35mm.

3. The limiting structure for matching two mesh covers of different material thicknesses according to claim 2, characterized in that: When the plastic mesh cover (1) is installed, the gap between the bottom surface of the plastic mesh cover (1) and the top of the first limiting block (5) and the second limiting block (6) is 0-0.1mm.

4. The limiting structure for matching two mesh covers of different material thicknesses according to claim 3, characterized in that: The first limiting block (5) and the second limiting block (6) both have inclined surfaces on the side walls of the groove wall near the placement groove (4).

5. The limiting structure for matching two mesh covers of different material thicknesses according to claim 4, characterized in that: The distance between the rounded corner root edge of the plastic mesh cover (1) and the top surface of the notch groove (9) is 0.2mm-0.3mm.

6. The limiting structure for matching two mesh covers of different material thicknesses according to claim 5, characterized in that: When the plastic mesh cover (1) is installed in the placement groove (4), the gap between the two side walls of the notch groove (9) and the two side walls of the second limiting block (6) is 0.5mm-1mm, and the distance between adjacent second limiting blocks (6) is 10mm-15mm.

7. The limiting structure for matching two mesh covers of different material thicknesses according to claim 6, characterized in that: When the plastic mesh cover (1) and the metal mesh cover (2) are installed in the placement groove (4), the distance between the bottom surface of the plastic mesh cover (1) and the metal mesh cover (2) and the top of the groove wall of the placement groove (4) is greater than 0.7 mm.

8. The limiting structure for matching two mesh covers of different material thicknesses according to claim 7, characterized in that: The lower the design height of the first limiting block (5) and the second limiting block (6), the greater the design distance between the bottom surface of the plastic mesh cover (1) and the metal mesh cover (2) and the top of the groove wall of the placement groove (4).

9. The limiting structure for matching two mesh covers of different material thicknesses according to claim 1, characterized in that: The plastic mesh cover (1) is made of PP+GF10, PP+GF15, PP+GF20, PP+GF30, PP+EPDM-T20 or PP-T20; the metal mesh cover (2) is made of stainless steel SUS304 or aluminum alloy, and the thickness of stainless steel SUS304 is 0.5-0.8mm, and the thickness of aluminum alloy is 0.8-1.2mm; the interior trim panel body (3) is made of PP+EPDM-T20, PP+GF10, PP+GF15, PP+GF20, PP+GF30 or PP-T20, and the thickness of interior trim panel body (3) is 2.0mm-2.5mm.

10. A limiting structure for matching two mesh covers of different material thicknesses according to claim 1, characterized in that: After the clips (7) of the plastic mesh cover (1) are inserted into the clip holes (8) of the interior trim panel body (3), the clips (7) of the plastic mesh cover (1) and the interior trim panel body (3) are welded together by welding with a welding gun; after the clips (7) of the metal mesh cover (2) are inserted into the clip holes (8) of the interior trim panel body (3), the metal mesh cover (2) and the interior trim panel body (3) are connected by bending and tightening the clips (7) of the metal mesh cover (2).

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