CN219228039U

CN219228039U - Aluminum casting surface bonding cover plate structure and vehicle-mounted display module assembly comprising same

Info

Publication number: CN219228039U
Application number: CN202223091797.XU
Authority: CN
Inventors: 黄生发; 潘俊锋; 王德维
Original assignee: Truly Opto Electronics Ltd
Current assignee: Truly Opto Electronics Ltd
Priority date: 2022-11-21
Filing date: 2022-11-21
Publication date: 2023-06-20
Anticipated expiration: 2032-11-21

Abstract

The utility model relates to an aluminum casting surface bonding cover plate structure and a vehicle-mounted display module comprising the same, wherein the structure comprises an aluminum casting and a cover plate, and RTV (room temperature vulcanized) glue is arranged between the aluminum casting and the cover plate so as to bond the aluminum casting and the cover plate; wherein, be equipped with round boss along the interior slot edge of aluminium foundry goods faying face, evenly distributed a plurality of piece boss around the interior slot of aluminium foundry goods, the boss and piece boss are last to be pasted with VHB and glue, and the height of boss or piece boss equals the height of RTV and subtracts the thickness of VHB and glue. The technical scheme of 'RTV glue + aluminum casting boss + VHB glue' is adopted to replace the traditional scheme of directly gluing with VHB glue. The boss is used for limiting the RTV adhesive to be compressed locally during pressure maintaining, guaranteeing the uniformity of the adhesive dispensing thickness, and reducing the problem of poor flatness of the joint surface. The VHB glue arranged on the boss has at least two functions, and the first is to position the joint relative position of the cover plate and the aluminum casting; and secondly, the cover plate and the aluminum casting are isolated, so that the phenomenon of direct contact after vibration of the cover plate and the aluminum casting is avoided, and a buffer effect is achieved.

Description

Aluminum casting surface bonding cover plate structure and vehicle-mounted display module assembly comprising same

Technical Field

The utility model relates to the technical field of display modules, in particular to an aluminum casting surface bonding cover plate structure and a vehicle-mounted display module comprising the same.

Background

The aluminum casting display module is a structural design of the current vehicle-mounted high-end display module, the surfaces of the cover plate glass and the aluminum casting are required to be bonded and assembled, a medium for bonding and assembling is usually VHB glue or RTV glue, but the VHB glue with large size is used in a large amount, the price is very expensive, the RTV glue is cheap, the RTV glue adhesive force is better, the thickness of the RTV glue is not well controlled, the flatness is poor, and the casting is easy to scratch cover plate ink when the thickness of the glue is not well controlled. Therefore, there is an urgent need to propose a new adhesive structure to solve the above-mentioned technical problems.

Disclosure of Invention

The utility model aims to solve the problems in the prior art, and provides an aluminum casting surface bonding cover plate structure and a vehicle-mounted display module comprising the same, wherein the scheme of using RTV glue, aluminum casting boss and VHB glue is adopted to replace the scheme of directly using VHB glue in the prior art, so that the aluminum casting surface bonding cover plate structure has more price advantage, and the RTV glue is more reliable in connection.

Specifically, the technical scheme of the utility model is as follows: an aluminum casting surface bonding cover plate structure comprises an aluminum casting and a cover plate, wherein RTV glue is arranged between the aluminum casting and the cover plate to bond the aluminum casting and the cover plate; wherein, be equipped with round boss along the interior slot edge of aluminium foundry goods faying face, evenly distributed a plurality of piece boss around the interior slot of aluminium foundry goods, the boss has VHB to glue on the piece boss, and the height of boss or piece boss equals RTV and glues thickness minus VHB glues thickness.

As the preferable technical scheme, the width of a circle of boss arranged on the inner groove frame edge of the joint surface of the aluminum casting is 1.5mm, and the height is 0.5mm.

As a preferred embodiment, the thickness of the VHB glue is 0.3mm.

As a preferable technical scheme, at least 8 block bosses are uniformly distributed around the inner groove frame of the aluminum casting.

As a preferred embodiment, the adhesion force of the VHB glue is 500kPa to 900kPa.

As a preferred technical solution, the RTV adhesive has an adhesive force of 0.9 to 1.8mPa.

As a preferable technical scheme, the working temperature of the RTV adhesive is-60-200 ℃.

As a preferred technical scheme, the RTV rubber is a condensed two-component RTV silicone rubber.

On the other hand, a vehicle-mounted display module assembly is provided, which comprises an aluminum casting, an integrated backlight, FOG, bonding OCA glue and a cover plate, wherein the aluminum casting and the cover plate glass are subjected to surface bonding by adopting the surface bonding cover plate structure of the aluminum casting.

As a preferable technical scheme, the cover plate is made of aluminosilicate glass.

Compared with the prior art, the utility model has the following technical effects: the technical scheme of 'RTV glue + aluminum casting boss + VHB glue' is adopted to replace the traditional scheme of directly gluing with VHB glue. The boss is used for limiting the RTV adhesive to be compressed locally during pressure maintaining, guaranteeing the uniformity of the adhesive dispensing thickness, and reducing the problem of poor flatness of the joint surface. The VHB glue arranged on the boss has at least two functions, and on one hand, the function is to position the joint relative position of the cover plate and the aluminum casting; on the other hand, the cover plate and the aluminum casting are isolated, so that the phenomenon of direct contact after vibration of the cover plate and the aluminum casting is avoided, and the buffer effect is achieved. Meanwhile, by adopting the technical scheme of the utility model, when the RTV adhesive is used for gluing large-size aluminum castings and glass cover plates, the price is low, and the RTV adhesive force is better.

Description of the drawings:

FIG. 1 is a schematic view of a surface-adhesive cover plate for an aluminum casting according to embodiment 1 of the present utility model;

FIG. 2 is a schematic view of a partially enlarged structure of an aluminum casting surface adhesive cover plate used in a display module according to embodiment 1 of the present utility model;

fig. 3 is a schematic structural diagram of a vehicle-mounted display module set according to embodiment 2 of the present utility model;

reference numerals illustrate:

RTV adhesive 1; VHB glue 2; a boss 31; a block boss 32; a cover plate 4; an aluminum casting 5; a backlight 6; FOG7; OCA8.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to specific embodiments of the present utility model and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be understood that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship conventionally put in use of the product of the present utility model, or the azimuth or positional relationship conventionally understood by those skilled in the art, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present utility model.

Example 1

As shown in fig. 1 and fig. 2, a schematic structural diagram of a cover plate 4 adhered to the surface of an aluminum casting 5 according to the present embodiment includes an aluminum casting 5 and a cover plate 4, and an RTV glue 1 is disposed between the aluminum casting 5 and the cover plate 4 to adhere the two; wherein, be equipped with round boss 31 along the interior slot edge of aluminium foundry goods 5 faying face, evenly distributed a plurality of piece boss 32 around the interior slot of aluminium foundry goods 5, paste on boss 31 and the piece boss 32 and have VHB to glue 2, the height of boss 31 or piece boss 32 equals RTV and glues 1 thickness minus VHB and glues 2 thickness. Preferably, at least 8 block bosses 32 are uniformly distributed around the inner frame of the aluminum casting 5.

Generally, the lamination of the large-size aluminum casting 5 and the cover plate 4 can adopt RTV adhesion, but RTV is fluid adhesive, the adhesive thickness of each position is difficult to control uniformly for large-size products, the problem of poor flatness of the lamination surface is easy to occur, and if the condition of poor pressure maintaining control occurs, namely, the surface of the cover plate 4 and the aluminum casting 5 can be in local contact, and the product has the risk of scratching the printing ink of the cover plate 4 when the product is vibrated in the use process. The utility model designs the boss 31, and the boss 31 has the function of limiting the RTV adhesive 1 to be partially compressed during pressure maintaining, ensuring the uniformity of the adhesive dispensing thickness and reducing the problem of poor flatness of the joint surface.

The VHB glue 2 arranged on the boss 31 can play at least two roles, namely positioning the joint relative position of the cover plate 4 and the aluminum casting 5; on the other hand, the cover plate 4 and the aluminum casting 5 are isolated, so that the cover plate 4 and the aluminum casting 5 are prevented from directly contacting after vibration, and a buffering effect is achieved.

Preferably, the width of the round of boss 31 arranged on the inner groove frame edge of the joint surface of the aluminum casting 5 is 1.5mm, the height is 0.5mm, the thickness of the VHB glue 2 is 0.3mm, and the thickness of the RTV glue 1 is 0.8mm.

Preferably, the adhesive force of VHB glue 2 is 500kPa to 900kPa, and the adhesive force of RTV glue 1 is 0.9mPa to 1.8mPa. The adhesive force of the RTV adhesive 1 is greater than that of the VHB adhesive 2, which is beneficial for bonding large-sized aluminum castings 5 and cover plates 4.

Preferably, the working temperature of the RTV rubber 1 is-60-200 ℃, and the RTV rubber 1 is condensation type bi-component RTV silicone rubber. The dual-component RTV adhesive 1 has good adhesive property, excellent electrical insulation property of a cured product, dampproof and shockproof functions, good electrical insulation and arc resistance, ageing resistance, dampproof and adhesive property, and is suitable for-60-200 ℃.

Example 2

As shown in fig. 3, a schematic structural diagram of a vehicle-mounted display module set according to this embodiment is provided, where the display module set includes an aluminum casting 5, an integrated backlight 6, a FOG7, an adhesive OCA8 adhesive and a cover plate 4, and the aluminum casting 5 and the cover plate 4 glass are surface-bonded by adopting the structure of the aluminum casting 5 and the cover plate 4 as provided in embodiment 1. Preferably, the cover plate 4 is aluminosilicate glass. The aluminum casting 5 surface bonding apron 4 structure of this display module assembly adopts "RTV to glue 1+aluminum casting 5 boss 31+VHB to glue 2" structure to replace traditional bonding connection scheme who directly glues 2 with VHB, and the display module assembly that makes can be more price advantage to RTV glues 1 connection more firm, especially to the aluminum casting 5 display module assembly of the narrow frame design of part, adopts VHB to glue 2 bonding, and the adhesive force of the viscose width of same area is not than RTV glues 1.

Claims

1. The surface bonding cover plate structure of the aluminum casting is characterized by comprising the aluminum casting and a cover plate, wherein RTV glue is arranged between the aluminum casting and the cover plate to bond the aluminum casting and the cover plate; the aluminum casting die comprises an aluminum casting, wherein a circle of bosses are arranged along the inner groove edge of the joint surface of the aluminum casting, a plurality of block bosses are uniformly distributed around the inner groove edge of the aluminum casting, VHB glue is adhered to the bosses and the block bosses, and the height of the bosses or the block bosses is equal to the thickness of the RTV glue minus the thickness of the VHB glue.

2. The aluminum casting surface bonding cover plate structure according to claim 1, wherein the width of a circle of boss arranged on the inner groove frame edge of the joint surface of the aluminum casting is 1.5mm, and the height of the boss is 0.5mm.

3. The aluminum casting surface mount cover plate structure of claim 2, wherein the thickness of the VHB adhesive is 0.3mm.

4. The aluminum casting surface bonding cover plate structure according to claim 1, wherein at least 8 block bosses are uniformly distributed around the inner groove frame of the aluminum casting.

5. The aluminum casting surface adhesion cover plate structure of claim 1, wherein the adhesion force of the VHB adhesive is 500kPa to 900kPa.

6. The aluminum casting surface-adhesive cover plate structure of claim 1, wherein the adhesive force of the RTV glue is 0.9mPa to 1.8mPa.

7. The aluminum casting surface-adhesive cover plate structure of claim 6, wherein the working temperature of the RTV adhesive is-60-200 ℃.

8. The aluminum casting surface mount cover plate structure of claim 7, wherein the RTV rubber is a condensed two-component RTV silicone rubber.

9. The vehicle-mounted display module is characterized by comprising an aluminum casting, an integrated backlight, FOG, adhesive OCA glue and a cover plate, wherein the aluminum casting and the cover plate are subjected to surface adhesion by adopting the aluminum casting surface adhesion cover plate structure as claimed in any one of claims 1-8.

10. The vehicle display module of claim 9, wherein the cover plate is aluminosilicate glass.