Vehicle liquid crystal display fixing structure

Abstract

The utility model discloses a vehicle liquid crystal display fixing structure, which is characterized in that a fixing column is designed on a backlight iron stand, the fixing column is embedded into a main case for fixation, and then the fixing column and the main case are fixed by dispensing glue in a gap between the fixing column and the main case, so that structural glue is exposed outside, and the structural glue is not exposed outside. And when repair is needed, the structural adhesive is scraped off. According to the design, defective products can be repaired conveniently, the production cost is saved, the structural space is closed after assembly, the problem of uneven stress of the liquid crystal module can be effectively solved, and the display effect and the customer experience are improved. The fixing column is designed on the backlight iron frame, the fixing column is embedded into the main case to be fixed, and then the fixing column and the main case are fixed by dispensing the adhesive in the gap between the fixing column and the main case, so that the structural adhesive is exposed outside, and when repair is needed, the structural adhesive is scraped off. According to the design, defective products can be repaired conveniently, the production cost is saved, the structural space is closed after assembly, the problem of uneven stress of the liquid crystal module can be effectively solved, and the display effect and the customer experience are improved.

Description

Technical Field

[0001] The utility model relates to the field of liquid crystal display modules, in particular to a vehicle machine liquid crystal screen fixing structure. Background Art

[0002] The in-vehicle LCD module is an important information display device inside the car, used to display information such as vehicle speed, navigation, music, etc. In order to fix the LCD module, screw fixing was commonly used in the past. However, due to the vibration and bumps during the driving of the vehicle, the screw fixing is prone to loosening, resulting in uneven force on the LCD module, which in turn causes mura problems, seriously affecting the display effect and customer experience.

[0003] To solve this problem, the following fixed solutions are commonly used by car manufacturers. Solution 1 (such as Figure 1 ), the display module and the client shell are fixed by VHB and back screws. After VHB is fixed, the screws are locked. Due to the flatness of the module and the client shell, stress will be transmitted to the inside of the LCD after the screws are locked, causing the module to display unevenly. Solution 2 (such as Figure 2 ), the display module and the client shell are fixed by VHB and the back point structural glue. The structural glue is semi-liquid after heating and has plasticity, which can absorb the flatness of the module and the client shell. However, after assembly, the structural space is closed. Once a defect occurs, the module can basically not be repaired and needs to be scrapped.

[0004] Therefore, the fixing scheme of the vehicle-mounted LCD display module still needs to be continuously improved and optimized to improve stability and maintainability. Utility Model Content

[0005] In order to solve the deficiencies of the above-mentioned prior art, the utility model provides a car machine LCD screen fixing structure, which is designed by designing a fixing column on the backlight iron frame, and the fixing column is embedded in the main housing for fixing, and then fixed by dispensing glue in the gap between the fixing column and the main housing, so that the structural glue will be exposed to the outside, and when it needs to be repaired, the structural glue can be scraped off. This design facilitates the repair of defective products, saves production costs, and the structural space is sealed after assembly, which can effectively reduce the problem of uneven force on the liquid crystal module and improve the display effect and customer experience.

[0006] The technical problem to be solved by the utility model is achieved through the following technical solution: a vehicle LCD screen fixing structure, comprising:

[0007] A main housing, wherein the side edge of the main housing is raised to form a receiving cavity;

[0008] A display module, the display module comprising a backlight iron frame arranged on the back, and the display module is accommodated in the accommodating cavity of the main housing;

[0009] A backlight iron frame, wherein a fixing column is provided on a side of the backlight iron frame close to the main housing;

[0010] The main housing is provided with an opening corresponding to the position of the fixing post, and the fixing post is embedded in the opening;

[0011] The gap between the fixing column and the opening, and between the fixing column and the back of the main housing are fixed by means of structural adhesive.

[0012] As a preferred embodiment of the vehicle LCD screen fixing structure provided by the utility model, the display module also includes a cover plate, an LCD, a middle frame and a light guide assembly. The cover plate is bonded to the LCD by optical glue, a buffer is provided between the LCD and the middle frame, and the light guide assembly is provided at the bottom of the middle frame.

[0013] As a preferred implementation of the vehicle LCD screen fixing structure provided by the utility model, a double-sided adhesive VHB is provided on the edge of the cover plate facing the LCD, and the edge of the cover plate is bonded and fixed to the side of the main housing through the VHB.

[0014] As a preferred implementation of the vehicle LCD screen fixing structure provided by the utility model, the buffer component is adhered to the edge of the middle frame.

[0015] As a preferred implementation of the vehicle LCD screen fixing structure provided by the utility model, the buffer component is a single-sided black sponge.

[0016] As a preferred implementation of the vehicle LCD screen fixing structure provided by the utility model, two fixing columns are provided on the backlight iron frame, and two openings are provided at corresponding positions of the main housing.

[0017] As a preferred implementation of the vehicle LCD screen fixing structure provided by the utility model, the two fixing columns are respectively arranged on the upper and lower side edges of the backlight iron frame.

[0018] As a preferred implementation of the vehicle LCD screen fixing structure provided by the utility model, the fixing column is 1-2 mm higher than the main housing.

[0019] As a preferred implementation of the vehicle LCD screen fixing structure provided by the utility model, the backlight iron frame is an integrally formed structure.

[0020] As a preferred embodiment of the vehicle LCD screen fixing structure provided by the utility model, the light guide assembly includes a backlight film material and a light guide plate, the backlight film material is located on a side surface of the light guide plate away from the backlight iron frame, and the backlight film material and the light guide plate are respectively located between the backlight middle frame and the backlight iron frame.

[0021] The utility model has the following beneficial effects: a vehicle-mounted liquid crystal screen fixing structure, comprising: a main housing, a side edge of the main housing protruding to form a accommodating cavity; a display module, the display module comprising a backlight iron frame arranged on the back, the display module being accommodated in the accommodating cavity of the main housing; a backlight iron frame, a fixing column being provided on a side of the backlight iron frame close to the main housing; an opening is provided in the main housing corresponding to the position of the fixing column, the fixing column is embedded in the opening, and the gap between the fixing column and the opening, as well as between the fixing column and the back of the main housing are fixed by structural adhesive. The present application designs a fixing column on the backlight iron frame, and embeds the fixing column into the main housing for fixing, and then fixes it by dispensing glue in the gap between the fixing column and the main housing, so that the structural adhesive will be exposed to the outside. When rework is required, the structural adhesive can be scraped off. This design facilitates the rework of defective products and saves production costs. Moreover, the structural space is sealed after assembly, which can effectively reduce the problem of uneven force on the liquid crystal module and improve the display effect and customer experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the scheme in the present application, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 It is a back screw fixing solution of the prior art;

[0024] Figure 2 It is a back-point structural adhesive fixing solution of the prior art;

[0025] Figure 3 A structural schematic diagram of a vehicle LCD screen fixing structure provided by the utility model;

[0026] Figure 4 A schematic diagram of the display module structure of the vehicle LCD screen fixing structure provided by the utility model;

[0027] Figure 5 This is a schematic diagram of the main housing structure of the vehicle LCD screen fixing structure provided by the utility model.

[0028] 1. Main casing; 11. Opening; 2. Display module; 21. Backlight iron frame; 22. Cover plate; 23. Optical glue; 24. LCD; 25. Buffer; 26. Middle frame; 27. Light guide assembly; 28. VHB; 3. Structural glue. DETAILED DESCRIPTION

[0029] The present invention is described in detail below in conjunction with the accompanying drawings and embodiments, examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0031] In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. Example

[0033] As in the background technology, there are two fixed solutions commonly used by car manufacturers at present, please refer to Figure 1 One is that the display module and the client shell are fixed by VHB and back screws. After the VHB is fixed, the screws are locked. Due to the flatness of the module and the client shell, stress will be transmitted to the inside of the LCD after the screws are locked, resulting in uneven display of the module. Please refer to Figure 2 The second is that the display module and the client shell are fixed by VHB and the back point structural glue. The structural glue is semi-liquid after heating and has plasticity, which can absorb the flatness of the module and the client shell. However, after assembly, the structural space is closed. Once a defect occurs, the module can basically not be repaired and needs to be scrapped.

[0034] In order to solve the above technical problems, the utility model provides a vehicle LCD screen fixing structure, such as Figure 3 and Figure 5 As shown, including:

[0035] A main housing 1, wherein the side of the main housing 1 is raised to form a receiving cavity;

[0036] A display module 2, the display module 2 comprising a backlight iron frame 21 arranged at the back, and the display module 2 is accommodated in the accommodating cavity of the main housing 1;

[0037] A backlight iron frame 21, wherein a fixing column 212 is provided on one side of the backlight iron frame 21 close to the main housing 1;

[0038] The main housing 1 is provided with an opening 11 at a position corresponding to the fixing post 212 , and the fixing post 212 is embedded in the opening 11 .

[0039] The gap between the fixing column 212 and the opening 11 , and between the fixing column 212 and the back of the main housing 1 , are bonded and fixed by means of structural adhesive 3 .

[0040] In this embodiment, the fixing column 212 on the backlight iron frame 21 is engaged with the opening 11 on the main housing 1, and then the fixing is performed by applying glue in the gap between the fixing column 212 and the main housing 1, so that the structural glue 3 is exposed to the outside, and when rework is required, the structural glue 3 can be scraped off. This design facilitates the rework of defective products, saves production costs, and after assembly, the structural space is sealed, which can effectively reduce the problem of uneven force on the liquid crystal module and improve the display effect and customer experience.

[0041] In this embodiment, two fixing posts 212 are disposed on the backlight iron frame 21 , and two openings 11 are disposed at corresponding positions of the main housing 1 .

[0042] Through the above-mentioned structural design, fixing the display module 2 to the host can solve the problem of uneven force inside the liquid crystal module caused by the flatness problem. This embodiment does not specifically limit the number of the fixing columns 212. According to the structural load-bearing force analysis, there can be two, three, four or more fixing columns 212.

[0043] Furthermore, the two fixing posts 212 are respectively disposed on the upper and lower side edges of the backlight iron frame 21 .

[0044] In another preferred solution of this embodiment, the fixing column 212 is 1-2 mm higher than the back of the main housing 1. Since the main housing 1 also includes the mainboard and the fixing parts of the whole vehicle, the fixing column 212 will not exceed the height of the whole housing.

[0045] In this embodiment, the backlight iron frame 21 is an integrally formed structure. For example, a stamping method can be adopted to make the backlight iron frame 21 integrally formed, thereby improving the overall strength of the backlight iron frame 21 and further improving the ability of the backlight iron frame 21 to resist bending. Example

[0046] like Figure 4 As shown, the display module 2 also includes a cover plate 22, an LCD 24, a middle frame 26 and a light guide component 27. The cover plate 22 is bonded to the LCD 24 by an optical adhesive 23. A buffer 25 is provided between the LCD 24 and the middle frame 26. The light guide component 27 is provided at the bottom of the middle frame 26.

[0047] Furthermore, a double-sided adhesive tape VHB28 is provided on an edge of the cover plate 22 facing the LCD 24 , and the edge of the cover plate 22 is bonded and fixed to the side of the main housing 1 via the VHB28 .

[0048] Through the above structure, the light guide component 27 is used to evenly guide the light emitted by the backlight source to the surface of LCD24 to improve the display effect. The cover plate 22 and the middle frame 26 are usually made of plastic materials, which are lightweight and durable. LCD24 is the core component of the display module, which is used to display images and text. The buffer 25 plays a role in buffering and protecting LCD24, reducing the impact of collision on LCD24. VHB28 is a double-sided tape used to fix the edge of the cover plate 22 and the side of the main housing 1 to ensure the stable installation of the display module. The display effect and stability are guaranteed.

[0049] It should be noted that VHB28 is a special type of double-sided tape from 3M. VHB28 tape is an integrated acrylic adhesive component with the characteristics of a viscoelastic body. When deformed by external force, the foam core layer of VHB28 can fully absorb the stress caused by the deformation and can withstand deformation at least three times its own thickness. When the display screen and back frame of the vehicle display system are deformed, or when they are impacted and generate stress during driving, VHB28 tape can firmly bond the screen to the frame. The special overall viscoelasticity of the tape can effectively dissipate the stress in the bonding joint through the mechanical relaxation of the tape, thereby effectively protecting the bonding line. The foam core of VHB tape is a 100% fully closed-cell structure that cannot be passed by water and air, and has a sealing and waterproof function.

[0050] In a further preferred implementation of this embodiment, the buffer member 25 is adhered to the edge of the middle frame 26, and the buffer member 25 is a single-sided black sponge.

[0051] The buffer member 25 can absorb the external force from the backlight iron frame 21 and reduce the influence of the vibration of other rigid components on the display module 2 . Example

[0052] In this embodiment, the light guide assembly 27 includes a backlight film and a light guide plate. The backlight film is located on a side of the light guide plate away from the backlight iron frame 21 , and the backlight film and the light guide plate are respectively located between the backlight middle frame 26 and the backlight iron frame 21 .

[0053] Through the above structural design, the function of the light guide assembly 27 is to evenly guide the light emitted by the backlight source to the surface of the display screen to improve the display effect. The position design of the backlight film and the light guide plate can ensure that the light is effectively transmitted and produce uniform brightness on the entire display screen surface. The presence of the backlight middle frame 26 and the backlight iron frame 21 helps to support and fix the backlight film and the light guide plate, ensuring that their positions are stable and unchanged, which can improve the brightness and uniformity of the display screen, thereby enhancing the user's visual experience.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the utility model rather than to limit them. Although the embodiments of the utility model are described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the embodiments of the utility model can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A vehicle LCD screen fixing structure, characterized in that: include: A main housing (1), wherein a side edge of the main housing (1) is raised to form a receiving cavity; A display module (2), the display module (2) comprising a backlight iron frame (21) arranged on the back, the display module (2) being accommodated in the accommodating cavity of the main housing (1); A backlight iron frame (21), wherein a fixing column (212) is provided on a side of the backlight iron frame (21) close to the main housing (1); The main housing (1) is provided with an opening (11) at a position corresponding to the fixing column (212), and the fixing column (212) is embedded in the opening (11); The gap between the fixing column (212) and the opening (11), and between the fixing column (212) and the back of the main housing (1) are bonded and fixed by means of structural adhesive (3).

2. The vehicle LCD screen fixing structure according to claim 1, characterized in that: The display module (2) further comprises a cover plate (22), an LCD (24), a middle frame (26) and a light guide assembly (27); the cover plate (22) is bonded to the LCD (24) via an optical adhesive (23); a buffer member (25) is provided between the LCD (24) and the middle frame (26); and the light guide assembly (27) is provided at the bottom of the middle frame (26).

3. The vehicle LCD screen fixing structure as claimed in claim 2, characterized in that: A double-sided adhesive tape VHB (28) is provided on the edge of the cover plate (22) facing the LCD (24), and the edge of the cover plate (22) is bonded and fixed to the side of the main housing (1) via the VHB (28).

4. The vehicle LCD screen fixing structure as claimed in claim 2, characterized in that: The buffer component (25) is adhered to the edge of the middle frame (26).

5. The vehicle LCD screen fixing structure as claimed in claim 2, characterized in that: The buffer member (25) is a single-sided black sponge.

6. The vehicle LCD screen fixing structure according to claim 1, characterized in that: Two fixing columns (212) are provided on the backlight iron frame (21), and two openings (11) are provided at corresponding positions of the main housing (1).

7. The vehicle LCD screen fixing structure as claimed in claim 6, characterized in that: The two fixing columns (212) are respectively arranged opposite to each other at the upper and lower side edges of the backlight iron frame (21).

8. The vehicle LCD screen fixing structure as claimed in claim 1, characterized in that: The fixing column (212) is 1-2 mm higher than the main housing (1).

9. The vehicle LCD screen fixing structure according to claim 1, characterized in that: The backlight iron frame (21) is an integrally formed structure.

10. The vehicle LCD screen fixing structure as claimed in claim 2, characterized in that: The light guide assembly (27) comprises a backlight film material and a light guide plate, the backlight film material is located on a side surface of the light guide plate away from the backlight iron frame (21), and the backlight film material and the light guide plate are respectively located between the middle frame (26) and the backlight iron frame (21).

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