Magnesium alloy spraying rear shell structure of vehicle-mounted central control screen

Abstract

The utility model discloses a magnesium alloy spraying rear shell structure of a vehicle-mounted central control screen. The magnesium alloy spraying rear shell structure comprises a display screen assembly, a polyurethane hot melt adhesive, a backlight source assembly, a printed circuit board, screws, room temperature vulcanized silicone rubber and a magnesium alloy rear shell, the display screen assembly comprises a glass cover plate, liquid optical cement and a display screen, and the glass cover plate and the display screen are connected together after being thermally cured through the liquid optical cement. The backlight source assembly comprises an LED lamp panel, double-faced foam, a light guide plate and an aluminum plate rear shell, the double-faced foam is attached to the periphery of the rear shell, is in a square shape and has the dustproof, waterproof and light leakage prevention effects, meanwhile, the backlight source assembly is fixed to the rear face of the glass cover plate through the double-faced foam to form a display and backlight assembly, and the whole display and backlight assembly is installed in the magnesium alloy rear shell; according to the scheme, the strength of the whole display screen is guaranteed, it is guaranteed that the magnesium alloy rear shell cannot interfere with the glass cover plate during high-low-temperature shrinkage, and the product quality and safety are guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of vehicle display technology, specifically to a magnesium alloy spray-coated back shell structure for a vehicle central control screen. Background Technology

[0002] As consumers demand larger screens and superior visual experiences, in-vehicle displays are increasingly adopting narrow bezel designs. Narrow bezels not only make the screen look more modern and premium, but also provide a wider field of view, enhancing the driving experience. They offer a larger viewing area, optimize the display's appearance, and improve the usability and user experience of in-vehicle displays. By reducing bezel width, the display can provide more screen space, making information presentation richer and more intuitive.

[0003] With the increasing demand for narrow bezels in automotive displays, the traditional plastic back cover design can no longer meet the technical requirements of OEMs and their increasingly stringent experimental demands. In recent years, the strength and toughness of magnesium alloys have significantly improved, and their post-processing techniques have been greatly enhanced, leading to the gradual replacement of traditional plastic coatings with magnesium alloy spraying. These technological advancements have enabled magnesium alloys to excel in complex, large structural components, particularly in the industrialization of large structural parts such as display back panels, dashboard brackets, and powertrain housings in new energy vehicles. Plastic back covers, as exterior components for narrow bezel displays, still suffer from issues such as vibration and noise, uneven gaps between the outer shell and the glass cover, and cracking due to shrinkage and compression of the glass cover at high and low temperatures, making them unsuitable for the increasingly demanding experimental and technical requirements of customers.

[0004] Therefore, we propose a magnesium alloy spray-coated rear shell structure for in-vehicle central control screens. Utility Model Content

[0005] In view of the problems existing in the prior art, the present invention provides a magnesium alloy sprayed rear shell structure for vehicle central control screen, aiming to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a magnesium alloy spray-coated back shell structure for a vehicle central control screen, comprising a display screen assembly, a backlight assembly, a printed circuit board, and a magnesium alloy back shell arranged sequentially from front to back. The display screen assembly is connected to the backlight assembly via double-sided foam. After assembly, the display screen assembly and the backlight assembly are fixed inside the magnesium alloy back shell using polyurethane hot melt adhesive. The polyurethane hot melt adhesive is automatically dispensed around the end face of the magnesium alloy back shell. A room temperature vulcanizing silicone rubber is provided in the middle of the end face of the magnesium alloy back shell and connected to the aluminum plate back shell. The backlight assembly includes an LED light board, a light guide plate, and an aluminum plate back shell. The printed circuit board is bonded to the aluminum plate back shell on the back of the backlight assembly via double-sided foam. An LED light board is provided below the aluminum plate back shell, and the light guide plate is connected to the aluminum plate back shell via double-sided foam.

[0007] Preferably, the display assembly includes: a glass cover, a liquid optical adhesive, and a display screen, wherein the glass cover is connected to the display screen via the liquid optical adhesive to form the display assembly.

[0008] Preferably, the aluminum back cover is formed by stamping.

[0009] Preferably, the glass cover in the display assembly is connected to the backlight assembly via double-sided foam.

[0010] Preferably, the glass cover material is soda-lime glass, and a layer of 3A film is attached to the surface of the glass cover.

[0011] Preferably, the printed circuit board is disposed between the aluminum plate back cover and the magnesium alloy back cover, and the three are connected by screws.

[0012] In summary, this utility model provides a magnesium alloy spray-coated rear shell structure for a vehicle central control screen. Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. This patent shows that the display component is fixed to the inside of the magnesium alloy back shell by polyurethane hot melt adhesive, providing strong fixation. Simultaneously, the aluminum plate back shell of the backlight component is connected to the magnesium alloy back shell by room temperature vulcanizing (room temperature vulcanizing) silicone rubber. Room temperature vulcanizing silicone rubber cures without heating and possesses excellent electrical insulation and arc resistance properties, as well as excellent shock resistance. In the event of vibration, the elastic rubber provides protection, effectively improving product performance.

[0014] 2. This patented back cover is made of magnesium alloy semi-solid die casting and is also spray-painted as an exterior component. Traditional floating screen back covers are made of spray-painted plastic, but this cannot meet the technical requirements of narrow bezels and has problems such as uneven gaps with the glass cover and cracking of the glass cover due to pressure. This patented back cover uses magnesium alloy spraying, which ensures the overall strength of the product and reduces the number of mounting brackets, achieving integration and lightweight design. At the same time, the magnesium alloy semi-solid die casting and spraying as an exterior component can fully meet customer appearance requirements and is widely used in the narrow bezel structure design of automotive center console and instrument panel floating screens. Through this patent, lightweight and integrated design is achieved while meeting the customer's strict experimental requirements, simplifying overall assembly and improving production efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the display screen assembly of this utility model;

[0017] Figure 3 This is a schematic diagram of the backlight assembly of this utility model.

[0018] Figure 4 This is a schematic diagram of the bonding between the magnesium alloy rear shell and the aluminum plate rear shell of this utility model.

[0019] In the diagram: 1. Display screen assembly; 2. Polyurethane hot melt adhesive; 3. Backlight assembly; 4. Printed circuit board; 5. Screws; 6. Room temperature vulcanizing silicone rubber; 7. Magnesium alloy back cover; 8. Glass cover plate; 9. Liquid optical adhesive; 10. Display screen; 11. LED light board; 12. Double-sided foam; 13. Light guide plate; 14. Aluminum plate back cover. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings.

[0021] like Figures 1 to 4 As shown:

[0022] This utility model is as follows: Figure 1 As shown, please refer to Figure 1-4This utility model provides a technical solution: a magnesium alloy spray-coated back shell structure design for a vehicle-mounted central control screen, including a display screen assembly 1, polyurethane hot melt adhesive 2, a backlight assembly 3, a printed circuit board 4, screws 5, room temperature vulcanizing silicone rubber 6, and a magnesium alloy back shell 7; wherein the display screen assembly 1 includes: a glass cover plate 8, liquid optical adhesive 9, and a display screen 10; the backlight assembly 3 includes: an LED light board 11, double-sided foam 12, a light guide plate 13, and an aluminum plate back shell 14. The glass cover plate 8 is made of soda-lime glass, and its optical surface is coated with a layer of 3A film, which has anti-reflective, anti-fingerprint, and anti-glare functions, and also has an explosion-proof function to meet the head-impact regulations for vehicle-mounted displays. The display screen 10 has display and touch functions, which can reduce a touch screen component and has the effect of integration and lightweighting.

[0023] Reference embodiment: The glass cover plate 8 is connected to the display screen 10 via liquid optical adhesive 9 to form the display screen assembly 1. The liquid optical adhesive 9 has the characteristics of high transmittance, high bonding strength, and practical light properties, and is widely used in the automotive and industrial display screen fields.

[0024] Reference embodiment: The printed circuit board 4 is bonded to the aluminum back cover 14 on the back of the backlight assembly 3 by double-sided foam 12. The aluminum back cover 14 is formed by stamping and has good thermal conductivity, which can quickly dissipate the heat of the LED light board 11.

[0025] Reference embodiment: The glass cover plate 8 in the display assembly 1 is connected to the backlight assembly 3 via double-sided foam 12.

[0026] Reference embodiment: After assembly, the display panel assembly 1 and the backlight assembly 3 are fixed inside the magnesium alloy back shell 7 using polyurethane hot melt adhesive 2. The polyurethane hot melt adhesive 2 is automatically dispensed around the magnesium alloy back shell 7, and room temperature vulcanizing (RTV) silicone rubber 6 connects the aluminum plate back shell 14 to the magnesium alloy back shell 7 internally. The RTV silicone rubber 6 cures without heating and possesses excellent electrical insulation and arc resistance properties, as well as excellent shock resistance. In the event of vibration, the elastic adhesive provides protection.

[0027] Reference embodiment: The magnesium alloy back cover 7 serves as the back cover of the display screen, increasing the strength of the display screen and also acting as an exterior component for painting. Furthermore, the mounting bracket can be integrally die-cast with the magnesium alloy back cover 7, saving on parts. The magnesium alloy back cover 7 replaces the traditional plastic back cover, increasing the overall strength of the display screen, reducing vibration and noise, improving display performance, and achieving lightweight and minimalist design.

[0028] The embodiments described in this utility model are for illustrative purposes only and do not constitute a limitation on the scope of the claims. Other substantially equivalent substitutions that can be conceived by those skilled in the art are all within the protection scope of this utility model.

Claims

1. A magnesium alloy coated rear shell structure for a vehicle-mounted central control screen, characterized in that, The assembly includes, from front to back, a display screen assembly (1), a backlight assembly (3), a printed circuit board (4), and a magnesium alloy back shell (7). The display screen assembly (1) is connected to the backlight assembly (3) via double-sided foam (12). After assembly, the display screen assembly (1) and the backlight assembly (3) are fixed inside the magnesium alloy back shell (7) by polyurethane hot melt adhesive (2). The polyurethane hot melt adhesive (2) is automatically applied around the end face of the magnesium alloy back shell (7). A room temperature vulcanizing silicone rubber (6) is provided in the middle of the surface and connected to the aluminum plate back shell (14). The backlight assembly (3) includes an LED lamp board (11), a light guide plate (13) and an aluminum plate back shell (14). The printed circuit board (4) is bonded to the aluminum plate back shell (14) on the back of the backlight assembly (3) through double-sided foam (12). The LED lamp board (11) is set below the aluminum plate back shell (14). The light guide plate (13) is connected to the aluminum plate back shell (14) through double-sided foam (12).

2. The magnesium alloy spray-coated rear shell structure for a vehicle-mounted central control screen according to claim 1, characterized in that: The display assembly (1) includes a glass cover plate (8), a liquid optical adhesive (9), and a display screen (10). The glass cover plate (8) is connected to the display screen (10) through the liquid optical adhesive (9) to form the display assembly (1).

3. The magnesium alloy spray-coated rear shell structure for a vehicle-mounted central control screen according to claim 1, characterized in that: The aluminum plate back shell (14) is formed by stamping.

4. The magnesium alloy spray-coated rear shell structure for a vehicle-mounted central control screen according to claim 2, characterized in that: The glass cover plate (8) in the display assembly (1) is connected to the backlight assembly (3) via double-sided foam (12).

5. The magnesium alloy spray-coated rear shell structure for a vehicle-mounted central control screen according to claim 2, characterized in that: The glass cover (8) is made of soda-lime glass, and a layer of 3A film is attached to the surface of the glass cover (8).

6. The magnesium alloy spray-coated rear shell structure for a vehicle-mounted central control screen according to claim 1, characterized in that: The printed circuit board (4) is positioned between the aluminum plate back cover (14) and the magnesium alloy back cover (7), and the three are connected by screws (5).

Images