Double-color tail lamp mask

Abstract

The utility model discloses a double-color tail lamp mask which is formed by injection molding of a first color and a second color and comprises a first color mask layer and a second color mask layer which are respectively located on the periphery of the tail lamp mask, and the first color mask layer covers the second color mask layer. And the outward tail end of the first color mask layer is longer than the tail end of the second color mask layer. According to a traditional double-color lamp mask, the shapes of the tail ends of two colors coincide together, but a tiny notch is formed in the actually-machined joint of the two colors, air trapping is generated at the lap joint of the two colors, and cracking is likely to happen. The product structure of a traditional tail lamp mask is changed, a covering structure is provided, the first-color mask layer and the second-color mask layer of a product machined through a mold do not coincide, and therefore the pressure of a mold of the second color on the first color does not exist, for example, no white indentation exists in black injection molding, and exhaust can be conducted on a molded surface during white injection molding. In addition, the binding force of the two surface cover layers can be increased, air trapping is avoided, and the product can pass a stress test more easily.

Description

Technical Field

[0001] The utility model relates to the technical field of taillight masks, in particular to a two-color taillight mask. Background Art

[0002] With the rapid development of the global automotive industry, the automotive lighting industry, as an important part of the automotive industrial chain, has also shown a booming development trend in recent years. Automotive lighting is not only an important guarantee for vehicle driving safety but also an important manifestation of automotive exterior design and brand personality. Currently, the automotive lighting industry shows distinct characteristics in terms of technological innovation, market demand, competition pattern, etc.

[0003] At the same time, the requirements for the appearance surface are getting higher and higher, and the shape design needs to be considered while meeting the strength requirements. Cracking of the mask has always been a major problem with taillights. During the actual processing process, stress concentration occurs at the black-and-white joint. During high and low temperature cycling, as Figure 1-2 shown, a notch is generated at the black-and-white joint, stress is released at the notch, and the notch is prone to cause product cracking.

[0004] Therefore, a new two-color taillight mask structure needs to be proposed to solve the above problems. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a two-color taillight mask that reduces cracking.

[0006] To achieve the above purpose, the utility model provides the following technical solutions:

[0007] A two-color taillight mask, the taillight mask is injection molded from a first color and a second color, and includes a first-color mask layer and a second-color mask layer respectively located on the periphery of the taillight mask, and the first-color mask layer covers the second-color mask layer;

[0008] On the parting surface at the tail ends of the first-color mask layer and the second-color mask layer, the length of the outer tail end of the first-color mask layer being greater than that of the tail end of the second-color mask layer does not exceed 1 mm.

[0009] Further, the parting surface at the tail ends of the first-color mask layer and the second-color mask layer is horizontally distributed or inclined upward and outward.

[0010] Further, along the extension direction of the parting surface, the length by which the outer tail end of the first-color mask layer exceeds the tail end of the second-color mask layer is 0.05 - 1 mm.

[0011] Further, the inclination of the parting surface at the tail ends of the first-color mask layer and the second-color mask layer upward and outward is less than 20°.

[0012] Further, the first color is white and the second color is black.

[0013] In the above technical solution, the present utility model has the following beneficial effects:

[0014] This new type changes the product structure of the traditional taillight mask, proposes a covering structure. The first-color mask layer and the second-color mask layer of the product processed by the mold do not coincide, avoiding the gap between black and white combination, improving the bonding force of the black-and-white overlapping structure, and improving the stress concentration at the black-and-white junction. For the covering structure, there is no white indentation during black injection molding, and the parting surface can exhaust air during white injection molding, avoiding the gap between black and white combination, improving the bonding force of the black-and-white overlapping structure, and improving the stress concentration at the black-and-white junction. At the same time, the sealing surface is the parting surface. The product is more likely to pass the stress test. Description of the Drawings

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0016] Figure 1 is a top view structural schematic diagram of a prior art headlight mask;

[0017] Figure 2 is a cross-sectional structural schematic diagram of a prior art headlight mask;

[0018] Figure 3 is Figure 1 a structural schematic diagram of the prior art at cross-section MM;

[0019] Figure 4 is the Figure 1 cross-sectional structural schematic diagram at cross-section MM disclosed by the present utility model;

[0020] Figure 5 is the Figure 1 cross-sectional structural schematic diagram at cross-section NN disclosed by the present utility model;

[0021] Figure 6 is the Figure 1 cross-sectional structural schematic diagram at cross-section KK disclosed by the present utility model. Detailed Embodiments

[0022] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the drawings.

[0023] It should be noted that the orientation or positional relationship indicated by the terms "above", "one end", "upper", etc. used in this article is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Similar expressions are only for the purpose of illustration, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "one part", "two parts", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0024] As Figures 4-6 shown, a two-color taillight mask. The taillight mask is injection-molded from a first color and a second color, and includes a first-color mask layer 1 and a second-color mask layer 2 respectively located on the periphery of the taillight mask. The first-color mask layer 1 covers the second-color mask layer 2. As Figure 1 shown, for the outer circle of the product shown, the shaded part in the figure is the first-color mask layer 1 and the second-color mask layer 2 injection-molded with double-layer different-color materials.

[0025] The outer end of the first-color mask layer 1 exceeds the length of the end of the second-color mask layer 2. On the parting surface between the end of the first-color mask layer and the end of the second-color mask layer, the outer end of the first-color mask layer is greater than the length of the end of the second-color mask layer, and the length difference does not exceed 1 mm. If the outer end of the first-color mask layer 1 exceeds the end of the second-color mask layer 2 by too much, there will be a large bulge on the outer surface of the product, affecting the appearance. It is only required that the length of the first-color mask layer 1 is greater than that of the second-color mask layer 2 on the parting surface.

[0026] In the prior art, as Figure 2 shown, there is a notch at the black-and-white junction. Stress concentration occurs at the black-and-white junction. During high and low temperature cycling, stress is released at the black-and-white junction notch, resulting in product cracking. In order to avoid the notch at the black-and-white junction, improve the bonding force of the black-and-white lap joint structure, and improve the stress concentration at the black-and-white junction. The outer end of the first-color mask layer 1 exceeds the length of the end of the second-color mask layer 2, rather than the outer ends of the traditional two mask layers being coincident at the outer periphery. In this new type, they are not of the same length, and the length varies according to the thickness and shape of the product. The upper and lower layers on the outer surface of the processed and final product are not coincident, which can increase the bonding force between the first-color mask layer 1 and the second-color mask layer 2 and avoid the notch without affecting the product performance.

[0027] Preferably, the parting surface between the end of the first-color mask layer 1 and the end of the second-color mask layer 2 is horizontally distributed or inclined upward and outward. As Figures 3-6As shown, the leading ends of the first-color mask layer 1 and the second-color mask layer 2 are generally divided according to the shape of the product and the inclination of the product. However, at the trailing ends, in order to improve the exhaust effect and enable the upper and lower molds for producing the product to be separated vertically, the parting surfaces at the trailing ends of the first-color mask layer 1 and the second-color mask layer 2 are horizontally distributed or inclined upward and outward. As Figure 3 shown, the inclination angles of the traditional parting surfaces at the cross-sections MM and NN match the outer shape of the product. After improvement, as shown in Figure 4 or Figure 5 shown, the ends of the parting surfaces at the cross-sections MM and NN close to the outside of the product are horizontal, which is beneficial to the flow of the trailing end of the first-color mask layer 1 to fill the upper mold cavity.

[0028] Preferably, along the extension direction of the parting surface, the outer trailing end of the first-color mask layer 1 exceeds the trailing end of the second-color mask layer 2 by a length of 0.05 - 1 mm.

[0029] Furthermore, the parting surface at the trailing ends of the first-color mask layer 1 and the second-color mask layer 2 is inclined upward and outward by less than 20°. As shown in Figure 6 the trailing end of the parting surface at the cross-section KK is gradually inclined upward from the inside to the outside. If the angle is too large, the material of the first color will flow downward and cannot fill the upper mold cavity.

[0030] Furthermore, the first color is white and the second color is black.

[0031] Only some exemplary embodiments of the present invention are described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of the claims of the present invention.

Claims

1. A two-color taillight mask, the taillight mask is injection molded with a first color and a second color, characterized in that, It includes a first-color mask layer (1) and a second-color mask layer (2) respectively located on the periphery of the taillight mask, and the first-color mask layer (1) covers the second-color mask layer (2); On the parting surface of the tail ends of the first-color mask layer (1) and the second-color mask layer (2), the length by which the outer tail end of the first-color mask layer (1) is greater than the tail end of the second-color mask layer (2) does not exceed 1 mm.

2. The two-color taillight mask according to claim 1, characterized in that, The parting surface of the tail ends of the first-color mask layer (1) and the second-color mask layer (2) is horizontally distributed or inclined upward and outward.

3. The two-color tail light mask according to claim 2, characterized in that, Along the extending direction of the parting surface, the outer tail end of the first-color mask layer (1) exceeds the tail end of the second-color mask layer (2) by a length of 0.05 - 1 mm.

4. A two-color taillight mask according to claim 2, characterized in that, The parting surface of the tail ends of the first-color mask layer (1) and the second-color mask layer (2) is inclined upward and outward by less than 20°.

5. A two-color taillight mask according to claim 1, characterized in that, The first color is white and the second color is black.

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