Dovetail groove matching structure and vehicle lamp

Abstract

The utility model relates to a dovetail groove matching structure and a vehicle lamp. The automobile lamp comprises a lamp shell body and a decorative plate assembly, a dovetail boss and a limiting groove are arranged on an inner surrounding plate of the lamp shell body, and a matched dovetail groove and a matched limiting protruding block are arranged on the back face of each decorative plate of the decorative plate assembly. One-to-one or one-to-many detachable fixed connection between the lamp shell main body and the decorative plate assembly is realized through the matching between the dovetail boss and the dovetail groove and the matching between the limiting groove and the limiting bump. According to the utility model, the problem of installation and fixation of a plurality of smaller decorative parts in the automobile lamp under the condition that the space and the size are limited is solved, on one hand, the production cost of the automobile lamp is reduced through a dovetail groove matching structure, on the other hand, the assembly efficiency and the assembly precision of the automobile lamp are also improved, and the appearance damage of a product is also effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, and particularly relates to a dovetail groove matching structure and a vehicle lamp. Background Art

[0002] At present, the internal decorative parts of automotive headlights on the market are generally injection molded parts. Considering different material definitions, such as local aluminized or chromed decorative strips, etc., there are usually parts that need to be split. The assembly and fixation of these split parts usually have the following several solutions.

[0003] Mainstream solution one: Design screw posts on one side of two mating parts and leave through holes on the other side, and connect the two split parts together by means of screw matching. However, both the screw posts and the screws have obvious effects on the appearance of the product. The screw posts are also prone to cause injection molding defects, and the exposed screw heads also affect the visual effect. In addition, the screw posts not only need to be designed with paired positioning features, but also need to be arranged in areas that do not affect the appearance or invisible areas. There are restrictions on the direction of injection molding of the screw posts, resulting in restrictions on the assembly direction. The screw and screw post matching and fixing method is not applicable to split parts with small sizes.

[0004] Mainstream solution two: Design buckles and matching card slots on both sides of two mating parts respectively. However, the buckles need a certain size to deform, resulting in a large space requirement for the entire matching structure. For some areas of the parts, the appearance of the buckles will greatly increase the complexity of the mold.

[0005] Mainstream solution three: Connect two mating plastic parts together by welding. When the welding area is exactly on the appearance surface, it is easy to leave scald marks on the front of the area where the welding ribs are located. In addition, special equipment and tooling fixtures, etc. need to be invested during welding. Welding ribs cannot be arranged in areas with small space, resulting in insufficient working space for the soldering iron of the welding equipment.

[0006] In summary, both of the two matching and connecting methods of buckles or screws in the prior art require more space, and the injection molding of the corresponding structures needs to be along a specific direction, which has great limitations in the relatively compact space inside the lamp. At the same time, the welding method is prone to cause appearance defects, and the welding requires separate equipment investment, which will increase the cost. Therefore, it is urgent to develop a new matching and connecting structure for split decorative parts. Summary of the Invention

[0007] The purpose of the present utility model is to solve the above problems existing in the prior art, and to provide a dovetail groove matching structure for a vehicle lamp, which includes a main body 1 and a disassembly component 2. A dovetail boss 3 and a limit groove 4 are provided on the main body 1, and a matching dovetail groove 5 and a limit protrusion 6 are provided on the disassembly component 2. The main body 1 and the disassembly component 2 are detachably fixedly connected in a one-to-one or one-to-many manner through the cooperation between the dovetail boss 3 and the dovetail groove 5, and at the same time, the main body 1 and the disassembly component 2 are limited and locked through the cooperation between the limit groove 4 and the limit protrusion 6.

[0008] Further, both the dovetail boss 3 and the dovetail groove 5 are trapezoidal with a narrower upper part and a wider lower part.

[0009] Further, the limit groove 4 includes a left limit groove and a right limit groove, which are symmetrically distributed on the left and right sides at the bottom of the dovetail boss 3.

[0010] Further, the main body 1 further includes a bottom plate 7, an inner enclosing plate 8, and an outer enclosing plate 9. The inner enclosing plate 8 and the outer enclosing plate 9 are both vertically fixed on the same side of the bottom plate 7, and the outer enclosing plate 9 is located outside the inner enclosing plate 8. The dovetail boss 3 and the limit groove 4 are both provided on the outer surface of the inner enclosing plate 8.

[0011] Further, the main body 1 is specifically a lamp housing, a vehicle lamp bracket, an optical reflector (such as a reflector bowl, an optical waveguide, a thick wall), etc.

[0012] Further, the disassembly component 2 is specifically a vehicle lamp decorative part, and the number thereof is 2 - 8, and these decorative parts are symmetrically distributed on the inner enclosing plate 8 of the main body 1.

[0013] The second purpose of the present utility model is to provide a vehicle lamp equipped with the above dovetail groove matching structure. The vehicle lamp includes a high beam lamp, a low beam lamp, a daytime running lamp, a contour lamp, a turn signal lamp, a brake lamp, a fog lamp, etc.

[0014] Compared with the previous fixing methods such as screws, buckles, and welding, the dovetail groove matching structure solution provided by the present utility model has the following advantages: (1) The dovetail groove matching structure is equivalent to performing material addition and subtraction processing on two adjacent parts respectively, so it does not require additional space and is not restricted by space during molding or installation; (2) The dovetail groove matching structure does not require additional tooling fixtures or special equipment during the assembly process, which is beneficial to reducing production costs and the difficulty of assembly; (3) The dovetail groove matching structure is simple to assemble, and only needs to slide along the dovetail groove to automatically guide and position, greatly improving the assembly efficiency. Not only is the assembly accuracy high, but also it is not easy to cause appearance damage, which is beneficial to improving the assembly yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the lamp housing main body.

[0016] Figure 2 Schematic diagram of the back side of the detachable decorative component.

[0017] Figure 3 Schematic three-dimensional diagram of the detachable decorative component.

[0018] Figure 4 Schematic diagram of the assembled detachable decorative component and the main body of the lamp housing.

[0019] Figure 5 Schematic diagram of other angles of the assembled detachable decorative component and the main body of the lamp housing.

[0020] Figure 6 For Figure 5 Cross-sectional view taken along line A-A.

[0021] Figure 7 Schematic diagram of other angles of the assembled detachable decorative component and the main body of the lamp housing.

[0022] Figure 8 For Figure 7 Cross-sectional view taken along line B-B.

[0023] Wherein: 1 - main body, 2 - detachable component, 3 - dovetail boss, 4 - limiting groove, 5 - dovetail groove, 6 - limiting bump, 7 - bottom plate, 8 - inner peripheral plate, 9 - outer peripheral plate. Specific embodiments

[0024] To enable those of ordinary skill in the art to fully understand the technical solutions and beneficial effects of the present utility model, the following further description is provided in conjunction with specific embodiments. It should be emphasized that the embodiments given below are only preferred embodiments of the present utility model and do not constitute a limitation on the protection scope of the present utility model.

[0025] A certain new type of vehicle lamp developed by our company includes a lamp housing (i.e., the main body 1), a decorative component (i.e., the detachable component 2), a light source component, and a light distribution lens. The structures of the lamp housing and the decorative component are respectively as Figure 1 , 2 shown in Figure -3. The lamp housing includes a bottom plate 7 and an inner peripheral plate 8 and an outer peripheral plate 9 located on the bottom plate 7. The light source component is fixed in the groove in the middle of the inner peripheral plate 8, and the light distribution lens is fixedly connected to the outer peripheral plate 9 and the bottom plate 7 to form a complete vehicle lamp. In order to enhance the visual effect and improve the product competitiveness, according to the design plan, a circle of decorative components needs to be arranged around the light source component (i.e., on the inner peripheral plate 8). The decorative component includes 4 decorative plates of the same shape, which are symmetrically distributed on the upper, lower, left, and right outer surfaces of the inner peripheral plate 8, and metal coatings such as aluminum and chromium are formed on the outer surfaces of each decorative plate.

[0026] Previously, we tried to achieve the fixed connection between the lamp housing and each decorative panel through methods such as buckles, screws, welding, etc. However, due to practical reasons such as high surface quality requirements of the product, small and limited installation space, etc., quality problems often occurred during the development of this product.

[0027] Therefore, the developers of our company designed a dovetail groove matching structure, mainly improving and adjusting the contact surfaces of the lamp housing and the decorative components. For the lamp housing, an isosceles trapezoidal dovetail boss 3 is formed on the outer surface of its inner peripheral plate 8 through injection molding, and limiting grooves 4 are symmetrically arranged on the left and right sides of the lower bottom of the dovetail boss 3, as shown specifically in Figure 1 、 4 -8. As a matching part, a dovetail groove 5 and a limiting protrusion 6 are formed on the back of each rectangular decorative panel through injection molding, as shown specifically in Figures 2-3 、4-8. The trapezoidal design with a smaller upper part and a larger lower part of the dovetail boss and the dovetail groove can ensure the draft angle requirements during injection molding. When the decorative panel slides along the lamp housing, the fitting gap between the two gradually becomes smaller to the designed value. During this process, automatic positioning and limiting can be achieved, and no additional positioning and clamping structures are required in the up, down, left, and right directions.

[0028] During assembly, align the bottom of the dovetail groove 5 on the back of the decorative panel with the top of the limiting groove 4 on the lamp housing and slide it downward. After the limiting protrusion 6 on the decorative panel slides into the limiting groove 4 on the inner peripheral plate 8 of the lamp housing, the assembly is completed. At this time, the decorative panel is locked, and its degrees of freedom in all directions are restricted. Due to the characteristics of plastic, when the decorative panel slides into place during assembly, the operator can have an obvious perception, be able to confirm that the parts are correctly fitted, and there will be no situations such as incomplete assembly or incorrect assembly position, which is beneficial to reducing the defect rate of the assembly process.

[0029] The utility model solves the installation and fixation problems of multiple smaller decorative parts inside the vehicle lamp when the space and dimensions are limited. Through the dovetail groove matching structure, the assembly between the vehicle lamp decorative parts and the lamp housing or the bracket basically does not require additional space, does not require dedicated equipment or tooling, does not increase the complexity of the mold, and the installation and disassembly are both simple and fast, achieving multiple purposes such as reducing the cost of the vehicle lamp and energy conservation and environmental protection.

Claims

1. A dovetail groove mating structure, characterized in that: The dovetail groove matching structure includes a main body and a split component. A dovetail boss and a limiting groove are provided on the main body, and a matching dovetail groove and a limiting boss are provided on the split component. The main body and the split component are detachably and fixedly connected in a one-to-one or one-to-many manner through the cooperation between the dovetail boss and the dovetail groove, and between the limiting groove and the limiting boss.

2. The dovetail groove mating structure according to claim 1, wherein: Both the dovetail boss and the dovetail groove are trapezoids that are narrower at the top and wider at the bottom.

3. The dovetail groove mating structure according to claim 1, wherein: The limiting groove includes a left limiting groove and a right limiting groove, which are symmetrically distributed on the left and right sides at the bottom of the dovetail boss.

4. The dovetail groove mating structure according to claim 1, characterized in that: The main body further includes a bottom plate, an inner peripheral plate, and an outer peripheral plate. The inner peripheral plate and the outer peripheral plate are both fixed on the same side of the bottom plate, and the dovetail boss and the limiting groove are both provided on the outside of the inner peripheral plate.

5. The dovetail groove mating structure according to claim 1, characterized in that: The main body is specifically a lamp housing, a vehicle lamp bracket, or an optical reflector.

6. The dovetail groove mating structure according to claim 1, wherein: The split component is specifically a vehicle lamp decorative part, and the number thereof is 2-8, and they are symmetrically distributed on the main body.

7. A vehicle lamp, characterized in that: The dovetail groove matching structure according to any one of claims 1-6 is installed on the vehicle lamp.

8. The vehicle lamp according to claim 7, characterized in that: The vehicle lamp is specifically a high beam lamp, a low beam lamp, a daytime running lamp, a contour lamp, a turn signal lamp, a brake lamp, or a fog lamp.

Images