Cold riveting structure for car lamp radiator and LED (light-emitting diode) flexible board

Abstract

The utility model discloses a car lamp radiator and LED soft board cold riveting structure which comprises a radiator, an LED soft board, an LED soft board aluminum gasket, glue and heat conduction silica gel, the radiator is provided with a cold riveting column, the LED soft board and the LED soft board aluminum gasket are pasted through the glue to form an LED soft board assembly, and the back of the LED soft board aluminum gasket is coated with the heat conduction silica gel. And the LED flexible board assembly is placed on the radiator with the cold riveting column for cold riveting and fixing by a cold riveting process. The radiator and the LED soft board are fixed in a cold riveting mode, the radiator and the installation support are made into a pair of dies, the radiator is connected with the riveting columns in a cold riveting mode, the problems of die cost and space are solved, working procedures are simplified, and when the cold riveting structure is designed, the strength of the cold riveting structure can meet the vibration requirement. And the radiating effect of the original radiator is improved, the occupied space is small, and the cost is saved.

Description

Technical Field

[0001] The utility model belongs to the field of automotive lamps, and particularly relates to a cold riveting structure for a radiator and an LED flexible board of an automotive lamp. Background Technique

[0002] At present, in the design of automotive lamps, customers' requirements for cost control of lamp manufacturing are becoming increasingly strict, and there are more and more ways to fix the LED flexible board. Now, the power of the LED is getting higher and higher, and the heat dissipation requirement of the LED is also getting larger. Generally, the LED flexible board is fixed by tapping and screwing, and the process is complex and the cost is high. In order to better improve the heat dissipation efficiency, the LED flexible board is directly fixed on the radiator and cold riveting is used for fixation, saving costs. This requires that under the requirement of meeting the customer's cost limit, the heat dissipation efficiency of the LED flexible board should also be satisfied. The plastic bracket is cancelled, the radiator and the bracket are made into a set of molds, and the LED flexible board, the aluminum gasket and the radiator are cold riveted and fixed. When an aluminum gasket is added to the back of the LED flexible board and connected with glue, and at the same time, two cold riveting posts are added at multiple places on the radiator, two holes are correspondingly opened on the LED flexible board and the aluminum gasket at each place. After applying thermal conductive silicone on the back of the aluminum gasket, the LED flexible board sub-assembly is sleeved on the cold riveting posts, and then the cold riveting process is carried out to press the cold riveting posts, so that the pressed cold riveting posts can cover and fix the LED flexible board and the aluminum gasket. At the same time, considering the size of the cold riveting posts, the gap between the cold riveting posts and the flexible board, the gap between the cold riveting posts and the aluminum gasket, and the cold riveting safety gap of the LEDs on the flexible board, these are also multiple problem factors that structural designers need to consider and solve. The currently common LED flexible board installation methods are as follows:

[0003] The LED flexible board, the aluminum gasket and the radiator are assembled by screws, and then the radiator assembly is assembled with the mounting bracket. Because of the screw structure, this screw fixing method requires a large installation space, and two sets of molds for the radiator and the mounting bracket need to be opened. The process is complex and the mold cost is relatively high.

[0004] The LED flexible board, the aluminum gasket and the radiator are connected by thermal conductive glue, and then the radiator assembly is assembled with the mounting bracket by screws, and two sets of molds for the radiator and the mounting bracket need to be opened. The process is complex and the mold cost is relatively high. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a cold riveting structure for a radiator and an LED flexible board of an automotive lamp in order to solve the problems of installation cost and space control of the radiator and the LED flexible board of the automotive lamp.

[0006] To achieve the above objectives, the present utility model is realized through the following technical solutions: A cold riveting structure for a vehicle headlight radiator and an LED flexible board, characterized in that it includes a radiator, an LED flexible board, an LED flexible board aluminum gasket, glue, and thermal conductive silicone. The radiator is provided with cold riveting posts. The LED flexible board and the LED flexible board aluminum gasket are pasted with glue to form an LED flexible board assembly. The back of the LED flexible board aluminum gasket is coated with thermal conductive silicone. The LED flexible board assembly is placed on the radiator with cold riveting posts and cold riveting fixation is carried out through a cold riveting process.

[0007] The riveting post diameter a of the cold riveting posts on the radiator is taken to be greater than 2 mm. The thickness c of the LED flexible board aluminum gasket is 1 mm. At the same time, the cold riveting gap d of the LED is greater than 2.5 mm. The height by which the riveting posts of the radiator protrude from the LED flexible board after riveting is 0.5 mm. The height e by which the riveting posts of the radiator protrude from the LED flexible board after riveting is 0.5 mm. The calculation formula for the height b by which the riveting posts of the radiator protrude from the LED flexible board before riveting is b = 0.4*(c + e) / a + e. At the same time, the gap between the riveting posts and the LED flexible board 2 and the LED flexible board aluminum gasket 3 is left at 0.05 mm or 0.1 mm for a limiting effect.

[0008] The present utility model has the following beneficial effects: Through the cold riveting fixation of the radiator and the LED flexible board, the radiator and the mounting bracket are made into a set of molds, and the radiator is designed with riveting posts for cold riveting connection, which solves the problems of mold cost, space, and simplifies the process. And when this cold riveting structure is designed, the strength of the cold riveting structure can also meet the vibration requirements, and the heat dissipation effect of the original radiator, occupying a smaller space and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 is an exploded view of the present utility model;

[0010] Figure 2 is a schematic diagram after the present utility model is assembled;

[0011] Figure 3 is Figure 2 the A-A cross-sectional view of

[0012] Figure 4 is Figure 2 the B-B cross-sectional view of DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the drawings of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present utility model.

[0014] As Figures 1 - 3 , a cold riveting structure of a vehicle lamp radiator and an LED flexible board, comprising a radiator 1, an LED flexible board 2, an LED flexible board aluminum gasket 3, glue 4, and thermal conductive silicone 5. The radiator 1 is provided with cold riveting posts. The LED flexible board 2 and the LED flexible board aluminum gasket 3 are pasted with glue 4 to form an LED flexible board assembly. The back of the LED flexible board aluminum gasket 3 is coated with thermal conductive silicone 5. The LED flexible board assembly is placed on the radiator 1 with cold riveting posts for cold riveting process to be cold riveted and fixed. Finally, the radiator assembly can be fixed to other internal components. The LED flexible board 2 of the present utility model is an integral stepped shape composed of multiple LED boards. The radiator 1 is also an integral body corresponding to the LED flexible board. The radiator 1 is provided with multiple cold riveting posts, and the multiple cold riveting posts correspond to the multiple LED boards. The multiple LED flexible board aluminum gaskets 3 are adhesively attached to the LED boards of the LED flexible board one by one.

[0015] See Figure 4 , the riveting post diameter a of the cold riveting posts provided on the radiator 1 is taken to be greater than 2 mm, the thickness c of the LED flexible board aluminum gasket 3 is 1 mm, and at the same time, the cold riveting gap d of the LED is greater than 2.5 mm. The height by which the riveting post of the radiator 1 protrudes from the LED flexible board 2 after riveting is 0.5 mm. The height e by which the riveting post of the radiator 1 protrudes from the LED flexible board 2 after riveting is 0.5 mm. The calculation formula for the height b by which the riveting post of the radiator 1 protrudes from the LED flexible board 2 before riveting is b = 0.4*(c + e) / a + e.

[0016] The structure of the present utility model is simple. Through cold riveting connection between the LED flexible board and the cold riveting posts of the radiator, the LED flexible board sub-assembly is fixed, and the matching dimensions of the cold riveting posts of the LED flexible board and the radiator are designed to meet the process requirements, ensuring that the LED flexible board does not shake after installation and has good installation strength, achieving good effects in terms of limiting, installation, heat dissipation, and vibration.

[0017] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A cold riveting structure of a vehicle headlight radiator and an LED flexible board, characterized in that, It includes a radiator (1), an LED flexible board (2), an LED flexible board aluminum gasket (3), glue (4), and thermal conductive silicone (5). The radiator (1) is provided with cold riveting posts. The LED flexible board (2) and the LED flexible board aluminum gasket (3) are pasted with glue (4) to form an LED flexible board assembly. The back of the LED flexible board aluminum gasket (3) is coated with thermal conductive silicone (5). The LED flexible board assembly is placed on the radiator (1) with cold riveting posts, and cold riveting process is carried out for cold riveting fixation.

2. The cold riveting structure of a headlight radiator and an LED flexible board according to claim 1, wherein The riveting post diameter a of the cold riveting posts on the radiator (1) is greater than 2 mm. The thickness c of the LED flexible board aluminum gasket (3) is 1 mm. At the same time, the cold riveting gap d of the LED is greater than 2.5 mm. The height by which the riveting posts of the radiator (1) protrude from the LED flexible board (2) after riveting is 0.5 mm. The height e by which the riveting posts of the radiator (1) protrude from the LED flexible board (2) after riveting is 0.5 mm. The calculation formula for the height b by which the riveting posts of the radiator (1) protrude from the LED flexible board (2) before riveting is b = 0.4 * (c + e) / a + e.

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