Automobile bright trim strip mounting structure
By using an insert hook structure in conjunction with a bright trim hook, along with a rigid plastic insert and an elastic buffer layer, the problems of poor assembly stability and uneven gaps of the bright trim are solved, thus improving the assembly precision and appearance quality of the automotive bright trim.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHANGSHA YONGCHANG AUTOMOBILE PARTS
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-24
AI Technical Summary
现有汽车亮饰条与呢槽结合时，存在装配稳定性差、尺寸偏大、间隙不均匀及松脱风险的问题。
The device employs an insert barbed structure in conjunction with a bright trim hook, combined with a rigid plastic insert and an elastic buffer layer to ensure assembly stability and precision. The barbed structure forms a two-way mechanical lock, and the design of protrusions and grooves prevents loosening.
It achieves stable and reliable assembly of bright trim strips, reduces uneven gaps and surface differences, improves the overall appearance quality of the vehicle, and adapts to the assembly requirements of different vehicle models.
Smart Images
Figure CN224545884U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of automotive parts technology, specifically to an automotive bright trim strip installation structure. Background Technology
[0002] In automotive sealing systems, the combination of a felt groove and a metallic trim strip is a common structure. The most common method of connection is to have the trim strip's end flanged and snapped onto the felt groove body before installation onto the car door. Figure 1 As shown.
[0003] However, the existing structure has the following problems: the end flange of the bright trim strip is too long, requiring a corresponding slot to be set in the main body of the felt groove, resulting in an excessively large joint size; the bright trim strip is attached to the soft rubber of the felt groove by metal, resulting in poor assembly stability, low product consistency, and uneven gaps between the ends of the bright trim strips on the front and rear doors after installation, affecting the overall appearance of the vehicle; only one end can be equipped with a flange hook, while the other end is in an open state, which is prone to loosening due to vibration during vehicle operation, causing quality problems.
[0004] Based on this, a new automotive bright trim mounting structure is provided, which can eliminate the drawbacks of existing devices. Utility Model Content
[0005] The purpose of this utility model is to provide an automotive bright trim installation structure to solve the problems in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: A car trim installation structure includes a groove body and a trim strip. The groove body has injection-molded corners at both ends, and each injection-molded corner has an insert. The insert has a hook structure for fixing the trim strip to the groove body.
[0007] Based on the above technical solutions, this utility model also provides the following optional technical solutions: In one alternative: the barb structure includes a connecting plate, one end of which is connected to the insert, and the other end of which is provided with an insert barb. Both ends of the bright trim strip are provided with hooks that cooperate with the insert barb.
[0008] In one alternative: the injection-molded joint has a protrusion, and the insert has a groove corresponding to the protrusion.
[0009] In one alternative: the inner side of the bright trim strip is provided with an elastic buffer layer, the elastic buffer layer is made of EPDM rubber with a thickness of 0.3-0.8mm, and the elastic buffer layer is fixedly connected to the bright trim strip by hot melt adhesive.
[0010] In one alternative, the insert is made of rigid plastic.
[0011] In one alternative: the bright trim strip is made of high-strength engineering plastic, which is a composite material with chrome plating on an ABS substrate.
[0012] In one alternative: the contact surfaces of the insert barb and the hook are provided with anti-slip texture.
[0013] In one alternative: the bright trim strip has a reinforcing rib at the hook.
[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model utilizes the interlocking of the bright trim strip end and the internal inserts at both ends of the groove to meet the needs of different installation structures. The assembly positioning is stable and reliable, and the structure is simple. The integrated structure of the hard plastic insert and the corner ensures the accuracy of assembly dimensions, reduces uneven end gaps and surface differences, and improves the overall appearance quality of the vehicle. It has strong adaptability, and the shape of the hooks of the insert and the bright trim strip can be designed as round, square, etc., according to actual needs to meet the assembly requirements of different vehicle models. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model.
[0016] Figure 2 This is a front view of the assembly of the groove and the bright trim strip of this utility model.
[0017] Figure 3 This is a cross-sectional view of section AA of this utility model.
[0018] Figure 4 This is a schematic diagram of the structure of the bright decorative strip of this utility model.
[0019] Figure 5 This is a schematic diagram of the structure at point B of this utility model.
[0020] Figure 6 This is a schematic diagram of the structure of the insert of this utility model.
[0021] Figure reference numerals: 100, grooving body; 200, bright trim strip; 300, injection molded corner joint; 301, protrusion; 400, insert; 401, connecting plate; 402, insert barb; 403, hook; 404, groove; 500, elastic buffer layer; 600, anti-slip texture; 700, reinforcing rib. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0023] In one embodiment, such as Figures 1-6 As shown, an automotive bright trim installation structure includes a groove body 100 and a bright trim 200. The groove body 100 has injection-molded corners 300 at both ends. An insert 400 is provided inside the injection-molded corner 300. The insert 400 has a barb structure for fixing the bright trim 200 to the groove body 100. The insert 400 is fixed in the injection-molded corner 300, and the insert 400 fixes the bright trim 200 to the groove body 100 through the barb structure.
[0024] In this embodiment, as Figure 3 and Figure 6 As shown, the barb structure includes a connecting plate 401. One end of the connecting plate 401 is connected to the insert 400, and the other end of the connecting plate 401 is provided with an insert barb 402. Both ends of the bright trim strip 200 are provided with hooks 403 that cooperate with the insert barb 402. When the bright trim strip 200 is pressed along the assembly direction, the hooks 403 of the bright trim strip 200 contact the inclined surface of the insert barb 402, and the bright trim strip 200 undergoes a slight elastic deformation. When the hooks 403 completely pass over the insert barb 402, the bright trim strip 200 returns to its original position, and the horizontal engaging surface of the insert barb 402 and the corresponding surface of the hook 403 are tightly engaged to form a bidirectional mechanical lock, preventing the bright trim strip 200 from disengaging.
[0025] In one embodiment, such as Figure 3 and Figure 6 As shown, the injection-molded corner 300 is provided with a protrusion 301, and the insert 400 is provided with a groove 404 corresponding to the protrusion 301. The groove 404 and the protrusion 301 in the injection-molded corner 300 are precisely engaged, ensuring that the insert 400 is not loose or displaced inside the corner, providing a stable reference for the subsequent fixing of the bright trim strip.
[0026] In one embodiment, such as Figure 5 As shown, the inner side of the bright trim strip 200 is provided with an elastic buffer layer 500. The elastic buffer layer 500 is made of EPDM rubber with a thickness of 0.3-0.8mm. The elastic buffer layer 500 and the bright trim strip 200 are fixedly connected by hot melt adhesive. The elastic buffer layer 500 solves the gap problem between the bright trim strip 200 and the vehicle body assembly, and can also buffer the vibration and impact during driving, avoiding abnormal noise caused by rigid contact. EPDM rubber also has good weather resistance and can adapt to the complex external environment of the car.
[0027] In one embodiment, such as Figure 6As shown, the insert 400 is made of rigid plastic. Rigid plastic has high rigidity and dimensional stability, which can accurately maintain the shape and position of the barb structure and prevent the fit between the barb and the bright trim hook from loosening due to material deformation. Compared with traditional soft rubber substrates, it can reduce deformation errors caused by long-term stress or temperature changes, ensuring the consistency of the snap-fit structure.
[0028] In one embodiment, such as Figure 4 As shown, the bright trim strip 200 is made of high-strength engineering plastic, which is a composite material with chromium plating on the surface of ABS substrate. It adopts a composite structure of ABS + chromium plating, which not only retains the lightweight advantage of plastic material, but also ensures the same decorative and corrosion resistance as metal bright trim strips through the chromium plating layer.
[0029] In one embodiment, such as Figure 5 and Figure 6 As shown, the contact surfaces of the insert barb 402 and the latch 403 are provided with anti-slip texture 600, which increases the friction after the barb is engaged and further improves the anti-loosening performance of the latching structure. The serrated design can effectively prevent the barb from separating accidentally without affecting the smoothness of assembly.
[0030] In one embodiment, such as Figure 5 As shown, the bright trim strip 200 is provided with a reinforcing rib 700 at the hook 403 to prevent the hook 403 from breaking due to repeated disassembly or long-term stress.
[0031] The above embodiment discloses an automotive bright trim strip installation structure, wherein when the bright trim strip 200 is pressed along the assembly direction, the hook 403 of the bright trim strip 200 contacts the inclined surface of the insert barb 402, and the bright trim strip 200 undergoes a slight elastic deformation. When the hook 403 completely passes over the insert barb 402, the bright trim strip 200 returns to its original position, and the horizontal engaging surface of the insert barb 402 and the corresponding surface of the hook 403 are tightly engaged to form a bidirectional mechanical lock, preventing the bright trim strip 200 from disengaging.
[0032] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A bright trim strip mounting structure for automobiles, comprising a grooved body (100) and a bright trim strip (200), characterized in that, The two ends of the groove body (100) are provided with injection molding corners (300), and the injection molding corners (300) are provided with inserts (400). The inserts (400) are provided with barb structures to fix the bright trim strip (200) to the groove body (100).
2. The automotive bright trim strip mounting structure according to claim 1, characterized in that, The barb structure includes a connecting plate (401), one end of which is connected to the insert (400), and the other end of which is provided with an insert barb (402). Both ends of the bright trim strip (200) are provided with hooks (403) that cooperate with the insert barb (402).
3. The automotive bright trim strip mounting structure according to claim 1, characterized in that, The injection molding joint (300) is provided with a protrusion (301), and the insert (400) is provided with a groove (404) corresponding to the protrusion (301).
4. The automotive bright trim strip mounting structure according to claim 1, characterized in that, The inner side of the bright trim strip (200) is provided with an elastic buffer layer (500). The elastic buffer layer (500) is made of EPDM rubber with a thickness of 0.3-0.8mm. The elastic buffer layer (500) and the bright trim strip (200) are fixedly connected by hot melt adhesive.
5. The automotive bright trim strip mounting structure according to claim 1, characterized in that, The insert (400) is made of hard plastic.
6. The automotive bright trim strip mounting structure according to claim 1, characterized in that, The bright trim strip (200) is made of high-strength engineering plastic, which is a composite material with chromium plating on the surface of ABS substrate.
7. The automotive bright trim strip mounting structure according to claim 2, characterized in that, The contact surfaces of the insert barb (402) and the hook (403) are provided with anti-slip texture (600).
8. The automotive bright trim strip mounting structure according to claim 2, characterized in that, The bright trim strip (200) has a reinforcing rib (700) at the hook (403).