CN102411222B - The fixing means of a kind of liquid crystal display and internal component thereof - Google Patents

Abstract

The invention discloses a method for fixing a liquid crystal display and its internal components. The liquid crystal screen assembly of the liquid crystal display is assembled on the front shell; the core board is arranged between the liquid crystal screen assembly and the rear shell; On the matching pre-installation bracket; on the pre-installation bracket, there are posts for inserting into the back of the LCD screen assembly and studs for screwing in screws from the outside of the rear shell. Due to the use of the pre-installed bracket, through the posts on the pre-installed bracket, the core board can be positioned on the back of the LCD screen assembly without or removing the rear case, thereby reducing the cost ( That is, adding a pre-installed bracket) is very convenient to realize the plug-in and pull-out of the connecting wire in the process of debugging, testing and maintenance, and after production and maintenance, the core board is fixedly connected to the rear shell through the studs on the pre-installed bracket In fact, the internal space of the rear shell is fully utilized, the production process is simplified, the production efficiency is greatly improved, and the cost of parts is also greatly reduced.

Description

A method for fixing liquid crystal display and its internal components

technical field

The invention relates to the field of fixing structure of liquid crystal display and its internal components, more specifically, the improvement relates to a fixing method of liquid crystal display and its internal components.

Background technique

With the popularity and development of liquid crystal technology, the cost control of liquid crystal displays is particularly important. Most of the existing liquid crystal displays, including LCD TVs, are assembled on the back shell. However, in the actual production process and after-sales maintenance process, such a fixing method will cause problems in the process of connection, debugging and testing. As a result, it is difficult to plug and unplug the connecting wires of the components, which reduces the production efficiency; otherwise, it is necessary to use longer connecting wires, which increases the cost of materials.

In addition, even if all the components inside the liquid crystal display are installed on the front case or the liquid crystal screen assembly, since there is no special fixing structure on the liquid crystal screen assembly, not only the structure of the parts connecting the fixed parts will be complicated, but the space will be limited. On the contrary, the production cost will be increased, and the internal space of the rear shell cannot be fully utilized.

Therefore, the prior art still needs to be improved and developed.

Contents of the invention

The object of the present invention is to provide a fixing method for a liquid crystal display and its internal components, which can avoid the difficulty of plugging and unplugging the connecting wires of the internal components at a low cost, and can make full use of the internal space of the rear case.

The technical scheme of the present invention is as follows: a liquid crystal display including a front shell, a liquid crystal screen assembly, a core board and a rear shell; the liquid crystal screen assembly is assembled on the front shell; the core board is located on the liquid crystal screen Between the assembly and the rear shell; wherein: the liquid crystal display includes a pre-installed bracket that is compatible with the core board; the pre-installed bracket is arranged on the opposite corner of the core board; the pair The corners are located on the same diagonal line of the core board; the core board is set on the pre-installed bracket; the pre-installed bracket is also provided with a post for inserting into the back of the LCD screen assembly and studs for screwing in from the outside of said rear case.

The liquid crystal display, wherein: a positioning hole is provided on the back of the liquid crystal screen assembly; the positioning hole is adapted to the post on the pre-installed bracket.

In the liquid crystal display described above, at least one oblong hole is provided in the positioning hole for eliminating manufacturing and assembly errors of the core board and the post of the pre-installed bracket.

The liquid crystal display, wherein: feet are provided on another diagonal corner of the core board; the feet are located on another diagonal of the core board; the supporting height of the feet is equal to the predetermined The support height of the mounting bracket.

The liquid crystal display, wherein: the pre-installed bracket is provided with a positioning post for positioning the core board; the positioning post is adapted to the positioning hole on the core board.

In the liquid crystal display, a positioning groove for positioning the core board is provided on the pre-installed bracket. The positioning groove is adapted to the periphery of the core board.

A method for fixing internal components of a liquid crystal display, which is used to produce a liquid crystal display link including a front shell, a liquid crystal screen assembly, a core board, a pre-installed bracket and a rear shell; On the pre-installed bracket; the pre-installed bracket is arranged on the diagonal of the core board; the diagonal is located on the same diagonal of the core board; on the pre-installed bracket A post for inserting into the back of the LCD screen assembly and a stud for screwing in screws from the outside of the rear case are provided; the method includes the following steps: through the post on the pre-installed bracket, the machine The core board is positioned on the back of the LCD screen assembly; the LCD screen assembly is connected with the core board and the components on it with connecting wires; the power supply and the signal source are connected for debugging and testing; The rear case is buckled and connected with the front case, and the pre-installed bracket is fixed on the inner side of the rear case from the outside of the rear case by screws.

In the method for fixing internal components of a liquid crystal display, the liquid crystal screen assembly is assembled on the front shell before the core board is preassembled on the back of the liquid crystal screen assembly.

A method for fixing internal components of a liquid crystal display, used for maintenance of the liquid crystal display link including a front shell, a liquid crystal screen assembly, a core board, a pre-installed bracket and a rear shell; the liquid crystal screen assembly is assembled on the front shell; The core board is located between the liquid crystal screen assembly and the rear shell; the core board is arranged on a pre-installed bracket matched with it; the pre-installed bracket is arranged on the core board On the diagonal; the diagonal is located on the same diagonal of the core board; on the pre-installed bracket, there are posts for inserting into the back of the LCD screen assembly and for inserting from the rear shell the studs screwed into the screws on the outside; the method includes the following steps: unloading the screws screwed into the studs of the pre-installed bracket from the outside of the rear shell, and detaching the rear shell from the front shell; Turn on the power supply and the signal source, and connect the movement board and its components on the core board and its components positioned on the back of the liquid crystal screen assembly through the pre-installed support posts Debug and overhaul the liquid crystal screen assembly; fasten and connect the rear shell with the front shell, and then screw the removed screws into the studs of the pre-installed bracket from the outside of the rear shell, and screw the The pre-installed bracket is fixed on the inner side of the rear shell.

The method for fixing a liquid crystal display and its internal components provided by the present invention adopts a pre-installed bracket that is compatible with the core board, and through the post on the pre-installed bracket, the back shell can be removed or removed. Under the circumstances, the core board can be positioned on the back of the LCD screen assembly, so that the plugging and unplugging of the connecting wire can be realized very conveniently during the debugging, testing and maintenance process at a lower cost (that is, adding a pre-installed bracket). And after production and maintenance, the movement board is fixedly connected to the back shell through the studs on the pre-installed bracket, which makes full use of the inner space of the back shell, simplifies the production process, greatly improves the production efficiency, and also Greatly reduces parts cost.

Description of drawings

Fig. 1 is an exploded schematic diagram of the part except the base of the LCD TV of the present invention.

Fig. 2 is a structural layout diagram of the back of the liquid crystal screen assembly assembled on the front case in the liquid crystal television of the present invention.

Fig. 3 is an enlarged view of part A in Fig. 2 of the present invention.

Fig. 4 is a front view of the core board supported on the pre-installed bracket in the LCD TV of the present invention.

Fig. 5 is a B-B sectional view in Fig. 4 of the present invention.

Fig. 6 is a front perspective view of the pre-installed bracket used to support and fix the core board in the LCD TV of the present invention.

Fig. 7 is a reverse perspective view of the pre-installed bracket in Fig. 6 of the present invention.

Fig. 8 is a rear view of the liquid crystal television of the present invention in a state where the base is not assembled.

Fig. 9 is a C-C sectional view of the present invention when the screws are not fastened in Fig. 8 .

Fig. 10 is a C-C sectional view of the present invention when the screw is fastened in Fig. 8 .

detailed description

The specific embodiments and examples of the present invention will be described in detail below in conjunction with the accompanying drawings. The described specific embodiments are only used to explain the present invention, and are not intended to limit the specific embodiments of the present invention.

A kind of liquid crystal display of the present invention, taking liquid crystal TV as an example, as shown in Figure 1, Fig. 1 is the exploded schematic view of part except the base that plays a supporting role in the liquid crystal TV of the present invention, and this liquid crystal TV comprises front shell 110 and assembly The liquid crystal screen assembly 120 on the front shell 110, the core board 130 arranged on the pre-installed bracket 140, and the rear shell 150 are three parts; wherein, the liquid crystal screen assembly 120 is assembled on the front shell 110; The core board 130 is located between the liquid crystal panel assembly 120 and the rear shell 150; the core board 130 is arranged on a pre-installed bracket 140 matched with the core board 130; Fig. 5 is a sectional view of B-B in Fig. 4 of the present invention, and Fig. 4 is a front view of the core board supported on the pre-installed bracket in the LCD TV of the present invention, and the pre-installed bracket 140 is also provided with post B33 and stud B34; the post B33 is used to insert the back of the liquid crystal screen assembly 120, and the core board 130 is positioned on the liquid crystal screen assembly 120; the stud B34 is used to insert from the rear Screws are screwed into the outside of the shell 150 to fix the core board 130 on the inside of the shell 150 .

In a preferred embodiment of the liquid crystal display of the present invention, as shown in FIG. 2 , FIG. 2 is a layout diagram of the rear structure of the liquid crystal screen assembly assembled on the front shell in the liquid crystal TV of the present invention. Match the positioning holes (121 and 122) where the post B33 of the pre-installed bracket 140 is inserted.

As shown in FIG. 3, FIG. 3 is an enlarged view of part A in FIG. 2 of the present invention application. In the positioning holes (121 and 122) on the back of the liquid crystal screen assembly 120, there is at least one oblong hole 122, which is used to eliminate the Manufacturing and assembly errors of the core board 130 and the post B33 of the pre-installed bracket 140 .

As shown in Figure 4, the pre-installed brackets 140 are respectively arranged at the diagonals on the same diagonal line of the core board 130, and the opposite corners located on the other diagonal line on the said pre-installed brackets 140 At the corners, feet 160 can also be provided to cooperate with the pre-installed bracket 140 to improve the stability of supporting the core board 130 .

As shown in FIG. 5 , the support height of the feet 160 for supporting the core board 130 is equal to the support height of the pre-installed bracket 140 for supporting the core board 130, so as to ensure that the core board 130 is parallel to the back of the LCD screen.

As shown in FIG. 6 , FIG. 6 is a perspective view of the front of the pre-installed bracket used to support and fix the core board in the LCD TV of the present invention. The pre-installed bracket 140 is provided with a positioning column for positioning the core board 130 B32, the positioning column B32 is adapted to the positioning hole on the core board, the positioning column B32 is arranged on the front of the pre-installed bracket 140, and the stud B34 is also arranged on the front of the pre-installed bracket 140 front.

And, a positioning groove B31 adapted to the periphery of the core board 130 is also provided on the pre-installed bracket 140; The edge extends toward the middle of the supporting platform 141, thereby simplifying the supporting and positioning structure of the pre-installed bracket 140, and further improving the supporting and positioning effect on the core board.

As shown in FIG. 7, FIG. 7 is a reverse perspective view of the pre-installed bracket in FIG. Above, the post B33 is arranged on the back of the pre-installation bracket 140 , which is opposite to the arrangement direction of the stud B34 and also opposite to the arrangement direction of the positioning post B32 .

Shown in conjunction with Figure 9 and Figure 10, Figure 9 is a C-C sectional view when the screw is not fastened in Figure 8 of the present invention, Figure 10 is a C-C sectional view when the screw is fastened in Figure 8 of the present invention, and Figure 8 is a LCD TV of the present invention in In the rear view when the base is not assembled, screw 170 can be screwed from the outside of the rear shell 150 into the stud B34 of the pre-installed bracket 140 with tools such as a screwdriver, and the core board is fixedly connected to the In the inner space of the rear case 150 .

Preferably, as shown in FIG. 7 , a hanging ear hole 143 is also provided on the hanging ear 142 for matching with the hanging column 123 on the back of the liquid crystal screen assembly 120 . As shown in FIG. 9 , when When the post B33 on the pre-installation bracket 140 is inserted into the LCD screen assembly 120, and the pre-installation bracket 140 is attached to the back of the LCD screen assembly 120, the ear holes on the pre-installation bracket 140 143 is also sleeved on the hanging column 123 at the back of the liquid crystal screen assembly 120 to prevent the single pre-installed bracket 140 from rotating around the post B33 inserted into the back of the liquid crystal screen assembly 120 .

Further, as shown in FIG. 10 , when the screw 170 is fastened in the stud B34 of the pre-installed bracket 140 with a screwdriver or other tools, the ear hole 122 on the pre-installed bracket 140 can be pulled away from the The hanging column 123 on the back of the liquid crystal screen assembly 120, and at the same time, the pre-installed bracket 140 can be pulled away from the back of the liquid crystal screen assembly 120 to ensure the creepage between the core board 130 and the back of the liquid crystal screen assembly 120 The distance further improves the electrical performance of the core board 130 .

Based on the liquid crystal display in the above-mentioned embodiments, the present invention also proposes a method for fixing internal components of a liquid crystal display, which is used to produce a liquid crystal display including a front shell, a liquid crystal screen assembly, a core board, a pre-installed bracket and a rear shell link; the core board is pre-installed on the pre-installed bracket that is compatible with it; the pre-installed bracket is provided with a post for inserting into the back of the LCD screen assembly and for inserting from the rear The studs of the screws are screwed into the outer side of the shell; the method includes the following steps: step S210, positioning the core board on the back of the liquid crystal screen assembly through the post on the pre-installed bracket;

Step S220, connect the liquid crystal screen assembly with the core board and the components on it with connecting wires; connect the power supply and signal source, and carry out debugging and testing;

Step S230 , snapping and connecting the rear case to the front case, and fixing the pre-installed bracket to the inner side of the rear case from the outside of the rear case with screws.

Further, before step S210, before the core board is preassembled on the back of the liquid crystal screen assembly, a step of assembling the liquid crystal screen assembly on the front shell may also be included.

In addition, it is also possible to directly debug and test the connected liquid crystal display assembly, the core board and the components on it without the front shell.

In addition, based on the above-mentioned liquid crystal display in each embodiment, the present invention also proposes a method for fixing internal components of a liquid crystal display, which is used for repairing the Liquid crystal display link; the liquid crystal screen assembly is assembled on the front shell; the core board is located between the liquid crystal screen assembly and the rear shell; the core board is arranged on a pre-installed On the bracket; the pre-installed bracket is provided with a post for inserting into the back of the LCD screen assembly and a stud for screwing in a screw from the outside of the rear shell; the method includes the following steps:

Step S310, unscrew the screws screwed into the studs of the pre-installed bracket from the outside of the rear case, and remove the rear case from the front case;

Step S320, turn on the power supply and the signal source, locate the core board and the components on it on the back of the liquid crystal screen assembly through the pre-installed support post, and connect the core board and its components through the connecting wire Debug and overhaul the LCD screen components connected with components;

Step S330, fasten and connect the rear shell and the front shell, and then screw the removed screws into the studs of the pre-installed bracket from the outside of the rear shell, and fix the pre-installed bracket on the inside of the back shell.

In addition, it is also possible to directly debug and overhaul the liquid crystal display assembly, the core board and the components on it connected by connecting wires when the front shell is disassembled.

Compared with the fixing method of liquid crystal TV and its internal components in the prior art, the fixing method of a kind of liquid crystal display and its internal components provided by the present invention adopts the pre-installed bracket, through the pre-installed bracket The post can be used to position the core board on the back of the LCD screen assembly without or removing the rear case, so that it can be used at a lower cost (that is, adding a pre-installed bracket) in the process of debugging, testing and overhauling It is very convenient to realize the plugging and unplugging of the connecting wires, and after production and maintenance, the core board is fixedly connected to the rear shell through the studs on the pre-installed bracket, which makes full use of the internal space of the rear shell and simplifies The production process greatly improves the production efficiency, and also greatly reduces the cost of parts.

It should be understood that the above descriptions are only preferred embodiments of the present invention, and are not sufficient to limit the technical solutions of the present invention. For those of ordinary skill in the art, within the spirit and principles of the present invention, they can Additions, substitutions, transformations or improvements are described, and all technical solutions after such additions, substitutions, transformations or improvements shall belong to the protection scope of the appended claims of the present invention.

Claims (9)

1. A liquid crystal display, comprising a front shell, a liquid crystal screen assembly, a core board and a rear shell; the liquid crystal screen assembly is assembled on the front shell; the core board is located between the liquid crystal screen assembly and the rear Between the shells; it is characterized in that: the liquid crystal display includes a pre-installed bracket that is compatible with the core board; the pre-installed bracket is arranged on the diagonal of the core board; the diagonal is located at the on the same diagonal line of the core board; the core board is set on the pre-installed bracket; the pre-installed bracket is also provided with posts for inserting into the back of the LCD screen assembly and for Screw in the studs from the outside of the rear case. 2. The liquid crystal display according to claim 1, characterized in that: a positioning hole is provided on the back of the liquid crystal screen assembly; the positioning hole is adapted to the post on the pre-installed bracket. 3 . The liquid crystal display according to claim 2 , wherein at least one oblong hole for eliminating manufacturing and assembly errors of the core board and the pre-installed bracket post is provided in the positioning hole. 4 . 4. The liquid crystal display according to claim 1, characterized in that: feet are provided on another diagonal of the core board; the feet are located on another diagonal of the core board; The support height of the feet is equal to the support height of the pre-installed bracket. 5. The liquid crystal display according to claim 1, characterized in that: a positioning post for positioning the core board is arranged on the pre-installed bracket; the positioning post is suitable for the positioning hole on the core board shown match. 6. The liquid crystal display according to claim 1, characterized in that: a positioning groove for positioning the core board is provided on the pre-installed bracket, and the positioning groove is in line with the periphery of the core board shown match. 7. A fixing method for internal components of a liquid crystal display, characterized in that, it is used to produce liquid crystal display links including front shells, liquid crystal screen components, core boards, pre-installed supports and back shells; the core boards are pre-prepared Installed on the pre-installed bracket that matches it; the pre-installed bracket is arranged on the diagonal of the core board; the diagonal is located on the same diagonal line of the core board; The pre-installed bracket is provided with posts for inserting into the back of the LCD screen assembly and studs for screwing in screws from the outside of the rear shell; the method includes the following steps: positioning the core board on the back of the liquid crystal screen assembly through the posts on the pre-installed bracket; Connect the LCD screen assembly with the core board and the components on it with connecting wires; connect the power supply and signal source, and carry out debugging and testing; The rear shell is fastened and connected with the front shell, and the pre-installed bracket is fixed on the inner side of the rear shell from the outside of the rear shell by screws. 8. The method for fixing internal components of a liquid crystal display according to claim 7, characterized in that: before the core board is preinstalled on the back of the liquid crystal screen assembly, the liquid crystal screen assembly is first assembled on the on the front shell. 9. A fixing method for internal components of a liquid crystal display, characterized in that it is used for maintenance of liquid crystal display links including front shell, liquid crystal screen assembly, core board, pre-installed bracket and rear shell; said liquid crystal screen assembly is assembled in On the front shell; the core board is located between the liquid crystal screen assembly and the rear shell; the core board is arranged on the pre-installed bracket matched with it; the pre-installed bracket is arranged on On the diagonal of the core board; the diagonal is located on the same diagonal of the core board; the pre-installed bracket is provided with a post for inserting into the back of the LCD screen assembly and a a stud for screwing in a screw from the outside of the rear case; the method comprising the steps of: Unscrew the screws screwed into the pre-installed bracket studs from the outside of the rear shell, and remove the rear shell from the front shell; Turn on the power supply and the signal source, and connect the core board and its components on the back of the LCD screen assembly through the pre-installed support posts, and connect the core board and its components through connecting wires. The connected LCD screen assembly is debugged and overhauled; Fasten and connect the rear shell with the front shell, and screw the removed screws into the studs of the pre-installation bracket from the outside of the rear shell, and fix the pre-installation bracket on the rear inside of the shell.