Mounting hole assembling structure of automotive trim injection molding part

Abstract

The utility model discloses a mounting hole assembling structure of an automotive trim injection-molded part, which comprises an upper cover plate, a lower cover plate, an upper cover plate and a lower cover plate, the upper side of the lower body is provided with a lower arc surface; the lower arc surface and the upper arc surface form a mounting hole; the upper cover plate and the lower body jointly form two seam allowance structures, and the two seam allowance structures are located on the two sides of the mounting hole respectively. The upper cover plate and the lower body which are split form the mounting hole of the pin, and the spigot structures are arranged on the two sides of the mounting hole, so that the upper cover plate and the lower body are accurately positioned, the high-precision concentricity of the upper arc surface and the lower arc surface is effectively ensured, the product quality is effectively controlled, and the pin is convenient to mount.

Description

Technical Field

[0001] This utility model relates to the technical field of injection molded parts assembly, and in particular to an assembly structure for mounting holes of automotive interior injection molded parts. Background Technology

[0002] Some existing automotive interior injection molded parts are manufactured by welding the upper cover plate and the lower body together. However, for automotive interior injection molded parts with pin mounting holes, if the welding assembly method is used, the pin mounting hole structure will be separated into the upper cover plate and the lower body. If the fit between the upper cover plate and the lower body is not precise, it will reduce the concentricity of the mounting holes and make it difficult to insert and install the pins. Utility Model Content

[0003] The main purpose of this utility model is to provide an assembly structure for mounting holes of automotive interior injection molded parts, which aims to effectively ensure or improve the concentricity of the mounting holes.

[0004] To achieve the above objectives, the technical solution of this utility model is as follows:

[0005] This utility model discloses a mounting hole assembly structure for injection-molded automotive interior parts, including:

[0006] The upper cover plate has an upper arc surface on its lower side;

[0007] The lower body has a lower arc surface on its upper side;

[0008] The lower arc surface and the upper arc surface together form the mounting hole for the pin;

[0009] The upper cover plate and the lower body together form two stop structures. The two stop structures are located on both sides of the mounting hole. When the parts of the upper cover plate and the lower body that form the stop structures are engaged with each other, the lower arc surface and the upper arc surface are concentric.

[0010] Compared with the prior art, the present invention uses a split upper cover plate and a lower body to form the mounting hole for the pin. By setting a stop structure on both sides of the mounting hole, the upper cover plate and the lower body are precisely positioned, which effectively ensures the high-precision concentricity of the upper and lower arc surfaces, effectively controls product quality, and facilitates the installation of the pin.

[0011] In a preferred embodiment, the two stop structures are positioned at different heights.

[0012] In a preferred embodiment, the stop structure is stepped.

[0013] In a preferred embodiment, the stop structure has a beveled mating portion; the beveled mating portion is inclined from bottom to top and away from the mounting hole.

[0014] In a preferred embodiment, the mounting hole has a pin mounting portion and a hollow portion connected to the pin mounting portion.

[0015] In a preferred embodiment, both the upper and lower arc surfaces are inferior arc surfaces.

[0016] In a preferred embodiment, the mounting holes are arranged in a centrally symmetrical manner.

[0017] To better understand and implement this invention, the following diagram, in conjunction with the accompanying drawings, provides a detailed description. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0019] Figure 1 This is a schematic diagram of the mounting hole assembly structure for automotive interior injection molded parts;

[0020] Figure 2 This is an exploded structural diagram of the mounting hole assembly structure of automotive interior injection molded parts.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Upper cover plate, 11. Upper arc surface, 2. Lower body, 21. Lower arc surface, 3. Stop structure, 31. Angled mating part, 4. Mounting hole, 41. Pin mounting part, 42. Hollowed-out part. Detailed Implementation

[0023] To better illustrate this utility model, a further detailed description of this utility model is provided below with reference to the accompanying drawings.

[0024] It should be understood that the described embodiments are merely some, not all, of the embodiments of this application. 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 the embodiments of this application.

[0025] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to limit the embodiments of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0026] See Figure 1 and Figure 2 This utility model discloses a mounting hole assembly structure for automotive interior injection molded parts, comprising:

[0027] The upper cover plate 1 has an upper arc surface 11 on its lower side;

[0028] The lower body 2 has a lower arc surface 12 on its upper side;

[0029] The lower arc surface 11 and the upper arc surface 12 together form the mounting hole 4 of the pin;

[0030] The upper cover plate 1 and the lower body 2 together form two stop structures 3. The two stop structures 3 are located on both sides of the mounting hole 4. When the upper cover plate 1 and the lower body 2 form the stop structures 3 and cooperate with each other, the lower arc surface 11 and the upper arc surface 12 are concentric.

[0031] Compared with the prior art, the present invention uses a split upper cover plate 1 and a lower body 2 to form the mounting hole 4 of the pin. By setting a stop structure 3 on both sides of the mounting hole 4, the upper cover plate 1 and the lower body 2 are accurately positioned, which effectively ensures the high-precision concentricity of the upper arc surface 11 and the lower arc surface 12, effectively controls product quality, and facilitates the installation of the pin.

[0032] Furthermore, the two stop structures 3 are positioned at different heights, which effectively prevents assembly errors and avoids incorrect installation of the cover plate 1 by the assembly personnel.

[0033] Furthermore, the stop structure 3 is stepped, and the two stepped structures make the upper cover plate 1 and the lower body 2 fit together in a concave-convex manner, accurately positioning and ensuring the concentricity of the mounting hole 4.

[0034] Furthermore, the stop structure 3 has a beveled mating part 31; the beveled mating part 31 is inclined from bottom to top and away from the mounting hole 4. Through the two beveled mating parts 31, the position of the upper cover plate 1 relative to the lower body 2 can be precisely defined, thereby effectively ensuring the high-precision concentricity of the upper arc surface and the lower arc surface, which is convenient for pin installation.

[0035] Furthermore, the mounting hole 4 has a pin mounting portion 41 and a hollow portion 42 connected to the pin mounting portion 41. The hollow portion 42 avoids contact with the pin, reduces the contact area between the pin and the mounting hole 4, and facilitates the insertion and installation of the pin and the rotation of the pin.

[0036] Furthermore, both the upper and lower arc surfaces are inferior arc surfaces, and the two inferior arc surfaces constitute the pin mounting part 41.

[0037] Furthermore, the mounting holes 4 are arranged in a centrally symmetrical manner to ensure that the mounting holes 4 are subjected to uniform force.

[0038] Based on the above description, the beneficial effects of this utility model are as follows:

[0039] 1. The structured disassembly of the mounting holes and the setting of the stop structure for precise positioning effectively solve the problem of insufficient concentricity accuracy after assembly and welding of injection molded parts with holes.

[0040] 2. By adopting the mounting hole assembly structure of this utility model, the injection mold development is simple, and the product ejection and demolding are easy, thereby simplifying the mold structure, shortening the manufacturing cycle, and reducing manufacturing costs;

[0041] 3. Individual measurement of injection molded parts is easy to operate, effectively controlling product quality, avoiding waste of finished products, and facilitating industrial mass production;

[0042] 4. Injection molded parts are easy to fill and mold, shortening the production cycle;

[0043] 5. The parts are manufactured without weld lines, resulting in superior product strength, durability, and extended lifespan. This effectively avoids the impact on part strength caused by weld lines after injection molding in conventional round hole structures.

[0044] This utility model is not limited to the above-described embodiments. If any modifications or variations to this utility model do not depart from the spirit and scope of this utility model, and if such modifications and variations fall within the scope of the claims and equivalent technologies of this utility model, then this utility model also intends to include such modifications and variations.

Claims

1. A mounting hole assembly structure for an injection-molded automotive interior part, characterized in that, include: The upper cover plate has an upper arc surface on its lower side; The lower body has a lower arc surface on its upper side; The lower arc surface and the upper arc surface together form the mounting hole for the pin; The upper cover plate and the lower body together form two stop structures. The two stop structures are located on both sides of the mounting hole. When the parts of the upper cover plate and the lower body that form the stop structures are engaged with each other, the lower arc surface and the upper arc surface are concentric.

2. The mounting hole assembly structure for automotive interior injection molded parts according to claim 1, characterized in that: The two stop structures are located at different heights.

3. The mounting hole assembly structure for automotive interior injection molded parts according to claim 1, characterized in that: The stop structure is stepped.

4. The mounting hole assembly structure for automotive interior injection molded parts according to claim 1, characterized in that: The stop structure has a beveled mating part; The inclined mating part is inclined from bottom to top and away from the mounting hole.

5. The mounting hole assembly structure for automotive interior injection molded parts according to claim 1, characterized in that: The mounting hole has a pin mounting portion and a hollow portion connected to the pin mounting portion.

6. The mounting hole assembly structure for automotive interior injection molded parts according to claim 4, characterized in that: Both the upper and lower circular arc surfaces are inferior arc surfaces.

7. The mounting hole assembly structure for automotive interior injection molded parts according to claim 5, characterized in that: The mounting holes are arranged in a centrally symmetrical manner.

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