CN220913848U - TFT screen connection fixing structure - Google Patents

Abstract

The utility model discloses a TFT (thin film transistor) screen connecting and fixing structure, which comprises a full-lamination display screen assembly, wherein a structural shell is arranged at the rear of the full-lamination display screen assembly, the full-lamination display screen assembly comprises a glass cover plate, a TFT screen and a TFT screen backboard which are sequentially distributed from front to back, a connecting column is arranged at the rear end of the TFT screen backboard, a connecting hole is formed in the connecting column, and a limiting hole corresponding to the position of the connecting column is formed in the structural shell; the connecting hole is internally provided with structural adhesive, the limiting hole is internally provided with a connecting rod, one end of the connecting rod extends into the connecting hole, and the structural adhesive is extruded by the connecting rod to fill a gap between the connecting hole and the connecting rod; the edge of the structural shell is bent forwards and matched with the edge of the glass cover plate. According to the utility model, the TFT screen and the structural shell are fixed together through the flexible substance such as the structural adhesive, so that the problem of displaying stress lines is effectively solved.

Description

TFT screen connection fixing structure

Technical Field

The utility model relates to the technical field of TFT (thin film transistor) screen connection, in particular to a TFT screen connection fixing structure.

Background

With the application of the vehicle-mounted large-size TFT screen, the fixed locking is particularly important, and 2 modes exist at present:

a: the TFT screen backboard iron frame is not provided with locking screws;

b: the TFT screen backboard iron frame is provided with locking screws;

Mode a does not have a locking screw, needs to be coated with black glue, and has difficult disassembly, as shown in fig. 1. Mode b is usually directly locked by adopting screws, and a specific structure comprises the existing screws (10), the existing structural shell (20), the existing screw columns (30), the existing TFT screen backboard iron frame (40), the existing glass cover plate (50) and the connection relation of the existing TFT screen backboard iron frame and the existing glass cover plate (50) is shown in fig. 2/3. Due to dimensional tolerances in the individual products and assemblies, as shown in fig. 2/3, there are two ways in which TFT screen backplate iron frames can be assembled with structural housings, namely gaps and interferences, such as the existing gap (60) of fig. 2, and the existing interference (70) of fig. 3.

After the two modes of screw locking, the TFT screen can be subjected to stress F, the TFT screen is lightened, stress lines are generated at the screw locking position, the customer experience is poor, and the customer complaints can be seriously caused.

Disclosure of utility model

The utility model aims to provide a TFT (thin film transistor) screen connecting and fixing structure, which solves the technical problems that in the prior art, after a screw is locked, the TFT screen is stressed by F, the TFT screen is lightened, stress lines are generated at the locking position of the screw, the experience of a customer is poor, and the customer complaints are seriously caused.

In order to achieve the above purpose, the technical scheme of the utility model provides a TFT (thin film transistor) screen connection fixing structure, which comprises a full-lamination display screen assembly, wherein a structural shell is arranged at the rear of the full-lamination display screen assembly, the full-lamination display screen assembly comprises a glass cover plate, a TFT screen and a TFT screen backboard which are sequentially distributed from front to back, a connecting column is arranged at the rear end of the TFT screen backboard, a connecting hole is arranged in the connecting column, and a limiting hole corresponding to the position of the connecting column is arranged on the structural shell; the connecting hole is internally provided with structural adhesive, the limiting hole is internally provided with a connecting rod, one end of the connecting rod extends into the connecting hole, and the structural adhesive is extruded by the connecting rod to fill a gap between the connecting hole and the connecting rod; the edge of the structural shell is bent forwards and matched with the edge of the glass cover plate.

Further, a first gap is arranged between the end face of the connecting column and the inner side face of the structural shell, a foam cushion is arranged in the first gap, and the foam cushion is distributed around the edge of the connecting hole so as to prevent the structural adhesive from leaking from the first gap.

Further, the gap value of the first gap is set to be 1-2 mm, and the thickness of the foam cushion is 0.5mm larger than the gap value of the first gap.

Further, the one end that the connecting rod kept away from the spliced pole is equipped with the pole head, the pole head is located the outside of structure casing, the width of pole head is greater than the width of spacing hole, the pole head with be equipped with the second clearance between the lateral surface of structure casing, the structural adhesive receives the extrusion of connecting rod outwards passes the foam-rubber cushion overflows to the second clearance.

Further, the gap value of the second gap is set to 0.5 to 1mm.

Further, a plurality of slotted holes are formed in one end, extending into the connecting hole, of the connecting rod, and the slotted holes can be matched with the structural adhesive.

Further, the connecting column is set as a screw column, and the connecting hole is set as a screw hole.

Further, the connecting columns are distributed along the edges of the TFT screen backboard in sequence, and the limiting holes are respectively corresponding to the connecting columns.

Further, the TFT screen backboard is set to be a TFT screen backboard iron frame.

Further, the connecting rod is hardware or plastic, the structural adhesive is single-component silica gel, and the structural shell is die casting, sheet metal part or plastic.

In summary, the technical scheme of the utility model has the following beneficial effects: the full-lamination display screen assembly comprises a glass cover plate, a TFT screen and a TFT screen backboard which are sequentially distributed from front to back, wherein the rear end of the TFT screen backboard is provided with a connecting column, a connecting hole is formed in the connecting column, and a limiting hole corresponding to the position of the connecting column is formed in the structural shell; therefore, the connecting column of the TFT screen backboard corresponds to the limiting hole of the structural shell in position, and subsequent installation is convenient. (2) Through the structure glue arranged in the connecting hole, the connecting rod is arranged in the limiting hole, one end of the connecting rod stretches into the connecting hole, and the structure glue is extruded by the connecting rod to fill a gap between the connecting hole and the connecting rod; therefore, the TFT screen backboard and the structural shell can be connected together by using the connecting rod, namely, structural adhesive is firstly dispensed in the connecting hole, and then the structural adhesive overflows outwards in the pressing assembly process of the connecting rod, so that the whole gap is filled. (3) Bending forward through the edge of the structural shell and matching with the edge of the glass cover plate; thereby the structural shell and the glass cover plate form a matching relationship so as to balance the stress of the whole structure. From analysis, the TFT screen and the structural shell are fixed together through the flexible substance such as the structural adhesive, so that the problem of displaying stress lines is effectively solved.

Drawings

FIG. 1 is a schematic diagram of a first prior art construction;

FIG. 2 is a schematic cross-sectional view of a second prior art;

FIG. 3 is a schematic cross-sectional view of a third prior art;

FIG. 4 is a schematic cross-sectional view showing the structure of the connecting column of the present utility model when the sponge pad is attached;

FIG. 5 is a schematic cross-sectional view of the fully attached display assembly of the present utility model mated with a structural housing;

FIG. 6 is a schematic cross-sectional view of the present utility model with structural adhesive applied to the connecting holes;

FIG. 7 is a schematic cross-sectional view of the connecting hole of the present utility model mated with a connecting rod;

FIG. 8 is an enlarged left side schematic view of FIG. 7;

FIG. 9 is a schematic view of the structure of the connecting rod of the present utility model;

Reference numerals illustrate: the display screen comprises a 1-full-lamination display screen assembly, a 11-glass cover plate, a 12-TFT screen, a 13-TFT screen backboard, a 131-connecting column, a 132-connecting hole, a 2-structural shell, a 201-limiting hole, 3-structural adhesive, a 4-connecting rod, a 401-rod head, a 402-slot hole, a 5-first gap, a 6-foam-rubber cushion and a 7-second gap.

10-Existing screws, 20-existing structural shells, 30-existing screw columns, 40-existing TFT screen backboard iron frames, 50-existing glass cover plates, 60-existing gaps and 70-existing interference.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, but the scope of protection of the present utility model is not limited.

In the present utility model, for a clearer description, the following description is made: the observer views fig. 7, with the observer above and the observer below and the front, it should be noted that the terms "front", "rear", "left", "right", "middle", "above", "below", and the like herein indicate orientations or positional relationships as they are based on the orientations or positional relationships in which the accompanying drawings are provided, merely for purposes of clarity in describing the present utility model, and do not indicate or imply that the structures or components to be referred to must have a specific orientation, be configured in a specific orientation, and therefore should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," "fourth" and the like are used for clarity or to simplify the description, and are not to be construed as indicating or implying a relative importance or quantity.

Referring to fig. 4 to 9, the present embodiment provides a TFT screen connection fixing structure, including a full-lamination display screen assembly 1, wherein a structural housing 2 is disposed at the rear of the full-lamination display screen assembly 1, the full-lamination display screen assembly 1 includes a glass cover plate 11, a TFT screen 12, a TFT screen backboard 13, which are sequentially distributed from front to back, a connection post 131 is disposed at the rear end of the TFT screen backboard 13, a connection hole 132 is disposed in the connection post 131, and a limit hole 201 corresponding to the position of the connection post 131 is disposed on the structural housing 2; the connecting hole 132 is internally provided with a structural adhesive 3, the limiting hole 201 is internally provided with a connecting rod 4, one end of the connecting rod 4 extends into the connecting hole 132, and the structural adhesive 3 is extruded by the connecting rod 4 to fill a gap between the connecting hole 132 and the connecting rod 4; the edge of the structural shell 2 is bent forward and engages with the edge of the glass cover plate 11. The function is as follows: (1) The rear of the full-lamination display screen assembly is provided with a structural shell, the full-lamination display screen assembly comprises a glass cover plate, a TFT screen and a TFT screen backboard which are sequentially distributed from front to back, the rear end of the TFT screen backboard is provided with a connecting column, the connecting column is internally provided with a connecting hole, and the structural shell is provided with a limiting hole corresponding to the position of the connecting column; therefore, the connecting column of the TFT screen backboard corresponds to the limiting hole of the structural shell in position, and subsequent installation is convenient. (2) Through the structure glue arranged in the connecting hole, the connecting rod is arranged in the limiting hole, one end of the connecting rod stretches into the connecting hole, and the structure glue is extruded by the connecting rod to fill a gap between the connecting hole and the connecting rod; therefore, the TFT screen backboard and the structural shell can be connected together by using the connecting rod, namely, structural adhesive is firstly dispensed in the connecting hole, and then the structural adhesive overflows outwards in the pressing assembly process of the connecting rod, so that the whole gap is filled. (3) Bending forward through the edge of the structural shell and matching with the edge of the glass cover plate; thereby the structural shell and the glass cover plate form a matching relationship so as to balance the stress of the whole structure. From analysis, the TFT screen and the structural shell are fixed together through the flexible substance such as the structural adhesive, so that the problem of displaying stress lines is effectively solved. However, the existing screw connection is hard, so that stress lines are easy to generate.

Specifically, a first gap 5 is provided between the end face of the connecting post 131 and the inner side face of the structural casing 2, the first gap 5 is provided with a foam cushion 6, and the foam cushion 6 is distributed around the edge of the connecting hole 132 to prevent the structural adhesive 3 from leaking from the first gap 5. The function is as follows: after the fully-attached display screen assembly 1 is assembled with the structural shell 2, a certain gap value N (namely a first gap 5) is ensured between the end face of the connecting column 131 and the inner side face of the structural shell 2, and meanwhile, in order to prevent glue leakage of the structural glue 3, the first gap 5 is required to be pasted with a foam cushion 6.

Specifically, the gap value of the first gap 5 is set to 1 to 2mm, and the thickness of the foam pad 6 is 0.5mm greater than the gap value of the first gap 5. The function is as follows: the clearance value N is usually 1-2 mm, and is too small, so that interference risks exist due to the size tolerance and assembly tolerance of a single product; the N value is too large, which is unfavorable for the thinning design of the product. Considering the individual parts and assembly tolerances, the thickness of the foam-rubber cushion 6 is slightly greater than the designed N value, typically N +0.5mm, ensuring that the fully bonded screen is not affected by stress.

Specifically, the end of the connecting rod 4 far away from the connecting column 131 is provided with a rod head 401, the rod head 401 is located on the outer side of the structural shell 2, the width of the rod head 401 is larger than that of the limiting hole 201, a second gap 7 is formed between the rod head 401 and the outer side surface of the structural shell 2, and the structural adhesive 3 is extruded by the connecting rod 4, passes through the foam-rubber cushion 6 outwards and overflows to the second gap 7. The function is as follows: the function of the connecting rod is to connect the fully-attached display screen assembly 1 with the structural shell 2, namely, structural adhesive 3 is firstly dispensed in the connecting hole 132, then the structural adhesive overflows outwards in the process of pressing and assembling the connecting rod, and then overflows to the second gap 7 after penetrating through the middle part of the foam-rubber cushion backwards, so that the whole first and second gaps are filled. Because the first gap and the second gap are both provided with the structural adhesive, the LCD screen and the structural shell are better fixed together through the structural adhesive, and the problem of displaying stress lines is more effectively solved.

Specifically, the gap value of the second gap 7 is set to 0.5 to 1mm. The function is as follows: in order to ensure better axial adhesion, a clearance value M (namely a second clearance 7) of 0.5-1 mm is designed between the connecting rod and the structural shell 2, as shown in fig. 7, so that the adhesion area is enlarged, and the assembly is more reliable.

Specifically, a plurality of slots 402 are disposed at one end of the connecting rod 4 extending into the connecting hole 132, and the slots 402 can be matched with the structural adhesive 3. The function is as follows: the placement of the slot 402 may provide a better adhesive fit with the structural adhesive.

Specifically, the connection post 131 is a screw post, and the connection hole 132 is a screw hole. The function is as follows: the setting of screw post, screw hole can utilize current screw post, screw hole structure better, reduces the cost of changing connection fixed knot structure, and the screw hole also is convenient to bond the cooperation with the structural adhesive.

Specifically, the plurality of connection posts 131 are distributed in sequence along the edge of the TFT screen backplate 13, and the plurality of limiting holes 201 respectively correspond to the positions of the plurality of connection posts 131. The function is as follows: the design of the connecting columns can better realize the stress balance of the whole structure.

Specifically, the TFT screen backplate 13 is set to be a TFT screen backplate iron frame. The function is as follows: the iron frame has better bearing capacity.

Specifically, the connecting rod 4 is hardware or plastic, the structural adhesive 3 is single-component silica gel, and the structural shell 2 is a die casting or sheet metal part or plastic. The function is as follows: the materials are selected to better meet the requirements of connection stability and strength. Of course, the connecting rod 4, the structural adhesive 3 and the structural shell 2 can be made of other materials, and can be selected according to the needs. The fully laminated display screen assembly 1 may be a fully laminated LCD screen vehicle mounted electronic screen.

The assembly steps are as follows:

(1) The end face of the connecting column 131 is stuck with the foam cushion 6, see fig. 4;

(2) The full-fitting display screen assembly 1 is fitted with the structural shell 2, see fig. 5;

(3) The connecting hole 132 is filled with the structural adhesive 3, see fig. 6;

(4) The connecting rod 4 is assembled in the limiting hole 201, see fig. 7;

While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the utility model, such changes and modifications are also intended to be within the scope of the utility model.

Claims (10)

1. The utility model provides a TFT screen connection fixed knot constructs, includes full laminating display screen subassembly (1), its characterized in that: the rear of the full-lamination display screen assembly (1) is provided with a structural shell (2), the full-lamination display screen assembly (1) comprises a glass cover plate (11), a TFT screen (12) and a TFT screen backboard (13) which are sequentially distributed from front to back, the rear end of the TFT screen backboard (13) is provided with a connecting column (131), the connecting column (131) is internally provided with a connecting hole (132), and the structural shell (2) is provided with a limiting hole (201) corresponding to the position of the connecting column (131); a structural adhesive (3) is arranged in the connecting hole (132), a connecting rod (4) is assembled in the limiting hole (201), one end of the connecting rod (4) extends into the connecting hole (132), and the structural adhesive (3) is extruded by the connecting rod (4) to fill a gap between the connecting hole (132) and the connecting rod (4); the edge of the structural shell (2) is bent forwards and matched with the edge of the glass cover plate (11).

2. The TFT screen attachment fixture of claim 1, wherein: be equipped with first clearance (5) between the terminal surface of spliced pole (131) with the medial surface of structural shell (2), first clearance (5) are equipped with foam-rubber cushion (6), foam-rubber cushion (6) are around the edge of connecting hole (132) distributes, in order to prevent structural adhesive (3) follow first clearance (5) hourglass glues.

3. The TFT screen connection fixing structure according to claim 2, wherein: the gap value of the first gap (5) is set to be 1-2 mm, and the thickness of the foam cushion (6) is 0.5mm larger than the gap value of the first gap (5).

4. The TFT screen connection fixing structure according to claim 2, wherein: one end that spliced pole (4) kept away from spliced pole (131) is equipped with pole head (401), pole head (401) are located the outside of structure casing (2), the width of pole head (401) is greater than the width of spacing hole (201), pole head (401) with be equipped with second clearance (7) between the lateral surface of structure casing (2), structural adhesive (3) receive extrusion of spliced pole (4) outwards pass foam-rubber cushion (6) and spill over to second clearance (7).

5. The TFT screen attachment mounting structure of claim 4, wherein: the gap value of the second gap (7) is set to be 0.5-1 mm.

6. A TFT screen connection fixing structure according to any one of claims 1 to 5, wherein: one end of the connecting rod (4) extending into the connecting hole (132) is provided with a plurality of slotted holes (402), and the slotted holes (402) can be matched with the structural adhesive (3).

7. A TFT screen connection fixing structure according to any one of claims 1 to 5, wherein: the connecting column (131) is a screw column, and the connecting hole (132) is a screw hole.

8. A TFT screen connection fixing structure according to any one of claims 1 to 5, wherein: the connecting columns (131) are distributed along the edges of the TFT screen backboard (13) in sequence, and the limiting holes (201) are respectively corresponding to the connecting columns (131).

9. A TFT screen connection fixing structure according to any one of claims 1 to 5, wherein: the TFT screen backboard (13) is set to be a TFT screen backboard iron frame.

10. A TFT screen connection fixing structure according to any one of claims 1 to 5, wherein: the connecting rod (4) is hardware or plastic, the structural adhesive (3) is single-component silica gel, and the structural shell (2) is a die casting or sheet metal part or plastic.