Liquid crystal display screen detection backlight frame

Abstract

The utility model relates to the technical field of backlight plate assembly, and particularly discloses a liquid crystal display screen detection backlight frame which comprises a transparent base plate, a rectangular frame is arranged at the upper end of the transparent base plate and comprises an L-shaped fixed plate and an L-shaped movable plate, and the L-shaped fixed plate is fixedly connected with the transparent base plate. One end of the L-shaped movable plate is inserted into a first inserting groove formed in one end of the L-shaped fixed plate, the other end of the L-shaped movable plate is inserted into a second inserting groove formed in the other end of the L-shaped fixed plate, a first positioning piece is arranged at the matching position of the first inserting groove and the L-shaped movable plate, and a second positioning piece is arranged at the matching position of the second inserting groove and the L-shaped movable plate. A display screen board needing to be detected is placed in the rectangular frame at the upper end of the transparent base plate, the L-shaped movable plate is pushed in the corner direction of the L-shaped fixed plate, and the size of the space between the L-shaped fixed plate and the L-shaped movable plate can be adjusted, so that the assembly requirements of display screen boards of different sizes are met, and the application range is wide.

Description

Technical Field

[0001] The utility model relates to the technical field of backlight board assembly, in particular to a backlight frame for detecting a liquid crystal display screen. Background Art

[0002] After the production of a liquid crystal display screen is completed, it is often necessary to use a detection device to detect it, so as to ensure that the backlight board of the liquid crystal display screen meets the production and use requirements.

[0003] Chinese Patent with the application number CN202321688369.7 discloses an industrial control computer backlight board that is convenient for clamping and fixing, including a backlight board main body. A strengthening protection frame is sleeved on the backlight board main body. Two installation structures are symmetrically installed on the outer wall of the strengthening protection frame. A sliding limit structure is slidably installed on the installation structure. The sliding limit structure is composed of an installation connecting plate and a limit baffle. The installation connecting plate and the limit baffle are installed at a ninety-degree angle. By setting the sliding limit structure, the backlight board main body is prevented from moving and falling off from the strengthening protection frame during the detection process. However, due to the fixed position of the sliding limit structure and the single adjustment method of the sliding limit structure, when testing backlight boards of different models, it is impossible to effectively fix smaller or larger backlight boards, and it is often necessary to replace the entire frame, resulting in low adaptability. Content of the Utility Model

[0004] In view of the above problems, the utility model provides a backlight frame for detecting a liquid crystal display screen to solve the problem that the existing detection backlight frame cannot effectively fix smaller or larger backlight boards when testing backlight boards of different models.

[0005] To achieve the purpose of the utility model, the utility model is realized through the following technical solutions: A backlight frame for detecting a liquid crystal display screen includes a transparent backing plate. A rectangular frame is arranged at the upper end of the transparent backing plate. The rectangular frame includes an L-shaped fixed plate and an L-shaped movable plate. The L-shaped fixed plate is fixedly connected to the transparent backing plate;

[0006] One end of the L-shaped movable plate is inserted into a first slot opened at one end of the L-shaped fixed plate, and the other end of the L-shaped movable plate is inserted into a second slot opened at the other end of the L-shaped fixed plate. The L-shaped movable plate is slidably connected to the first slot and the second slot. A first positioning member is arranged at the mating part of the first slot and the L-shaped movable plate, and a second positioning member is arranged at the mating part of the second slot and the L-shaped movable plate;

[0007] A rotating bracket is arranged at the corner of the L-shaped fixed plate, and a third positioning member for fixing the L-shaped movable plate is arranged at the corner of the L-shaped movable plate.

[0008] A further improvement lies in that: the first positioning member includes a plurality of first threaded holes formed in the upper end of the L-shaped fixing plate, the first threaded holes communicate with the first slots, and a positioning bolt is assembled in one of the first threaded holes.

[0009] A further improvement lies in that: the second positioning member includes a plurality of second threaded holes formed in the upper end of the L-shaped fixing plate, the second threaded holes communicate with the second slots, and a positioning bolt is assembled in one of the second threaded holes.

[0010] A further improvement lies in that: a rubber block is provided at the lower end of the positioning bolt, the rubber block is fixedly connected to the positioning bolt, and a plurality of dot-shaped protrusions are arranged on the lower end surface of the rubber block.

[0011] A further improvement lies in that: the third positioning member includes a bolt plate, the bolt plate is fixedly connected to the corner of the L-shaped movable plate, an adjusting bolt is assembled on the bolt plate, the adjusting bolt passes through the bolt plate and is threadedly connected to the bolt plate, and a suction cup is provided at the lower end of the adjusting bolt.

[0012] A further improvement lies in that: the rotating bracket includes a support rod and a rocker arm, the rocker arm is rotatably connected to the lower end of the support rod, one end of the rocker arm away from the support rod is fixedly connected to the L-shaped fixing plate, and a driving component for controlling the rotation of the rocker arm is provided at the connection between the rocker arm and the support rod.

[0013] A further improvement lies in that: the driving component includes a motor, a second gear and a first gear, the mounting end of the motor is fixedly connected to the support rod, the output end of the motor is fixedly connected to the second gear, the first gear is sleeved outside the rocker arm, the first gear is fixedly connected to the rocker arm, and the first gear meshes with the second gear.

[0014] A further improvement lies in that: an arc surface is provided on the edge of the transparent backing plate near the right-angle end of the corner of the L-shaped movable plate.

[0015] The beneficial effects of the present utility model are as follows:

[0016] By pushing the L-shaped movable plate towards the corner of the L-shaped fixing plate, the size of the space between the L-shaped fixing plate and the L-shaped movable plate can be adjusted to meet the assembly requirements of display panels of different sizes, and the applicable range is wide;

[0017] The first positioning member and the second positioning member are used to fix the two ends of the L-shaped movable plate, and the third positioning member is used to fix the corner of the L-shaped movable plate. In the three-point positioning method, the display panel will not shake after assembly, and the structure is more firm. Description of the Drawings

[0018] To more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0019] Figure 1 It is a structural diagram of the L-shaped fixing plate in the utility model.

[0020] Figure 2 It is a structural diagram of the L-shaped movable plate in the utility model.

[0021] Figure 3 It is a structural diagram of the positioning bolt in the utility model.

[0022] Figure 4 It is a structural diagram of the adjusting bolt in the utility model.

[0023] Wherein: 1. L-shaped fixing plate; 2. Transparent cushion plate; 3. L-shaped movable plate; 4. First slot; 5. First positioning hole; 6. Positioning bolt; 7. Rocker arm; 8. Support rod; 9. Motor; 10. First gear; 11. Second gear; 12. Bolt plate; 13. Adjusting bolt; 14. Second slot; 15. Second positioning hole; 16. Rubber block; 17. Suction cup. Specific embodiments

[0024] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of them. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0025] According to Figure 1 、 2 As shown in 3 and 4, a backlight frame for detecting a liquid crystal display screen is proposed in this embodiment, including a transparent cushion plate 2. A rectangular frame is provided at the upper end of the transparent cushion plate 2. The rectangular frame includes an L-shaped fixing plate 1 and an L-shaped movable plate 3. The L-shaped fixing plate 1 is fixedly connected to the transparent cushion plate 2; the display screen plate to be detected is placed in the rectangular frame at the upper end of the transparent cushion plate 2, and the L-shaped fixing plate 1 and the L-shaped movable plate 3 limit the display screen plate.

[0026] One end of the L-shaped movable plate 3 is inserted into the first slot 4 opened at one end of the L-shaped fixed plate 1, and the other end of the L-shaped movable plate 3 is inserted into the second slot 14 opened at the other end of the L-shaped fixed plate 1. The L-shaped movable plate 3 is slidably connected to the first slot 4 and the second slot 14. A first positioning member is provided at the mating portion of the first slot 4 and the L-shaped movable plate 3, and a second positioning member is provided at the mating portion of the second slot 14 and the L-shaped movable plate 3. Pushing the L-shaped movable plate 3 in the direction of the corner of the L-shaped fixed plate 1 can adjust the size of the space between the L-shaped fixed plate 1 and the L-shaped movable plate 3, so as to meet the assembly requirements of display panels of different sizes, and the applicable range is wide.

[0027] A rotating bracket is provided at the corner of the L-shaped fixed plate 1, and a third positioning member for fixing the L-shaped movable plate 3 is provided at the corner of the L-shaped movable plate 3. The first positioning member and the second positioning member are used to fix both ends of the L-shaped movable plate 3, and the third positioning member is used to fix the corner of the L-shaped movable plate 3. In the three-point positioning method, the display panel will not shake after assembly, and the structure is more firm.

[0028] Regarding the first positioning member:

[0029] The first positioning member includes a plurality of first threaded holes 5 opened at the upper end of the L-shaped fixed plate 1. The first threaded holes 5 communicate with the first slot 4, and a positioning bolt 6 is assembled in one of the first threaded holes 5. One end of the L-shaped movable plate 3 is inserted into the first slot 4 and slides along the first slot 4. After the L-shaped movable plate 3 slides below one of the first threaded holes 5, the positioning bolt 6 is assembled therein and screwed. The lower end of the positioning bolt 6 will abut against the upper end surface of the L-shaped movable plate 3 to fix one end of the L-shaped movable plate 3 inserted into the first slot 4.

[0030] Regarding the second positioning member:

[0031] The second positioning member includes a plurality of second threaded holes 15 opened at the upper end of the L-shaped fixed plate 1. The second threaded holes 15 communicate with the second slot 14, and a positioning bolt 6 is assembled in one of the second threaded holes 15.

[0032] The fixing method of the second positioning member is the same as that of the first positioning member, so no more description will be given here.

[0033] To prevent both ends of the L-shaped movable plate 3 from slipping off after being fixed, a rubber block 16 is provided at the lower end of the positioning bolt 6. The rubber block 16 is fixedly connected to the positioning bolt 6, and a number of dot-like protrusions are arranged on the lower end surface of the rubber block 16. This is used to increase the friction between the positioning bolt 6 and the contact surface of the L-shaped movable plate 3 to prevent the L-shaped movable plate 3 from loosening.

[0034] Regarding the third positioning member:

[0035] The third positioning member includes a bolt plate 12, which is fixedly connected to the corner of the L-shaped movable plate 3. An adjusting bolt 13 is assembled on the bolt plate 12. The adjusting bolt 13 passes through the bolt plate 12 and is threadedly connected to the bolt plate 12. A suction cup 17 is provided at the lower end of the adjusting bolt 13.

[0036] Rotate the adjusting bolt 13 and screw it downward. The suction cup 17 at the lower end of the adjusting bolt 13 will contact the upper end surface of the transparent backing plate 2. Through the vacuum adsorption between the suction cup 17 and the transparent backing plate 2, the corner of the L-shaped movable plate 3 is fixed.

[0037] For the specific structure of the rotating bracket, please refer to the following description:

[0038] The rotating bracket includes a support rod 8 and a rocker arm 7. The rocker arm 7 is rotatably connected to the lower end of the support rod 8. One end of the rocker arm 7 away from the support rod 8 is fixedly connected to the L-shaped fixed plate 1. A driving assembly for controlling the rotation of the rocker arm 7 is provided at the connection between the rocker arm 7 and the support rod 8.

[0039] It is further noted that the driving assembly includes a motor 9, a second gear 11 and a first gear 10. The mounting end of the motor 9 is fixedly connected to the support rod 8. The output end of the motor 9 is fixedly connected to the second gear 11. The first gear 10 is sleeved outside the rocker arm 7 and is fixedly connected to the rocker arm 7. The first gear 10 meshes with the second gear 11. The support rod 8 is fixed on an external bench. When the motor 9 controls the second gear 11 to rotate, the second gear 11 will drive the rocker arm 7 to rotate by meshing with the first gear 10. The rocker arm 7 can drive the L-shaped fixed plate 1, the transparent backing plate 2 and the L-shaped movable plate 3 to move together during rotation, so as to adjust the placement position of the display panel.

[0040] In a better way, an arc surface is provided on the edge of the transparent backing plate 2 near the right-angle end of the corner of the L-shaped movable plate 3. The advantage of this design is that when the staff pushes the L-shaped movable plate 3 at one end of the upper end surface of the transparent backing plate 2, they will not be scratched by the sharp corner of the transparent backing plate 2, improving the operation safety.

[0041] The working principle of this application:

[0042] The display panel to be detected is placed in the rectangular frame at the upper end of the transparent backing plate 2. The L-shaped fixed plate 1 and the L-shaped movable plate 3 limit the display panel. Push the L-shaped movable plate 3 in the direction of the corner of the L-shaped fixed plate 1, and the size of the space between the L-shaped fixed plate 1 and the L-shaped movable plate 3 can be adjusted. The first positioning member and the second positioning member are used to fix the two ends of the L-shaped movable plate 3, and the third positioning member is used to fix the corner of the L-shaped movable plate 3. In the three-point positioning method, the display panel will not shake after assembly, and the structure is more firm.

[0043] In the description of the present application, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present application. Unless otherwise clearly specified and defined, the terms "mounted", "connected" and "coupled" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0044] The above are only specific embodiments of the present application, enabling those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to these embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features claimed herein.

Claims

1. A backlight frame for liquid crystal display screen detection, comprising a transparent backing plate (2), wherein a rectangular frame is provided at the upper end of the transparent backing plate (2), and it is characterized in that: The rectangular frame includes an L-shaped fixed plate (1) and an L-shaped movable plate (3), and the L-shaped fixed plate (1) is fixedly connected to the transparent backing plate (2); One end of the L-shaped movable plate (3) is inserted into a first slot (4) opened at one end of the L-shaped fixed plate (1), and the other end of the L-shaped movable plate (3) is inserted into a second slot (14) opened at the other end of the L-shaped fixed plate (1). The L-shaped movable plate (3) is slidably connected to the first slot (4) and the second slot (14). A first positioning member is provided at the mating portion of the first slot (4) and the L-shaped movable plate (3), and a second positioning member is provided at the mating portion of the second slot (14) and the L-shaped movable plate (3); A rotating bracket is provided at the corner of the L-shaped fixed plate (1), and a third positioning member for fixing the L-shaped movable plate (3) is provided at the corner of the L-shaped movable plate (3).

2. The backlight frame for detecting a liquid crystal display screen according to claim 1, wherein: The first positioning member includes a plurality of first threaded holes (5) opened at the upper end of the L-shaped fixed plate (1). The first threaded holes (5) communicate with the first slot (4), and a positioning bolt (6) is assembled in one of the first threaded holes (5).

3. A backlight frame for detecting a liquid crystal display screen according to claim 1, characterized in that: The second positioning member includes a plurality of second threaded holes (15) opened at the upper end of the L-shaped fixed plate (1). The second threaded holes (15) communicate with the second slot (14), and a positioning bolt (6) is assembled in one of the second threaded holes (15).

4. A backlight frame for detecting a liquid crystal display screen according to any one of claims 2 and 3, characterized in that: A rubber block (16) is provided at the lower end of the positioning bolt (6). The rubber block (16) is fixedly connected to the positioning bolt (6), and a plurality of dot-shaped protrusions are arranged on the lower end surface of the rubber block (16).

5. A backlight frame for detecting a liquid crystal display screen according to claim 1, characterized in that: The third positioning member includes a bolt plate (12). The bolt plate (12) is fixedly connected to the corner of the L-shaped movable plate (3). An adjusting bolt (13) is assembled on the bolt plate (12). The adjusting bolt (13) passes through the bolt plate (12) and is threadedly connected to the bolt plate (12). A suction cup (17) is provided at the lower end of the adjusting bolt (13).

6. The backlight frame for detecting a liquid crystal display screen according to claim 1, wherein: The rotating bracket includes a support rod (8) and a rocker arm (7). The rocker arm (7) is rotatably connected to the lower end of the support rod (8). One end of the rocker arm (7) away from the support rod (8) is fixedly connected to the L-shaped fixed plate (1). A driving assembly for controlling the rotation of the rocker arm (7) is provided at the connection portion of the rocker arm (7) and the support rod (8).

7. A backlight frame for detecting a liquid crystal display screen according to claim 6, characterized in that: The driving assembly includes a motor (9), a second gear (11) and a first gear (10). The mounting end of the motor (9) is fixedly connected to the support rod (8). The output end of the motor (9) is fixedly connected to the second gear (11). The first gear (10) is sleeved outside the rocker arm (7). The first gear (10) is fixedly connected to the rocker arm (7). The first gear (10) meshes with the second gear (11).

8. A backlight frame for detecting a liquid crystal display screen according to claim 1, characterized in that: An arc surface is provided on the edge of the transparent backing plate (2) near the right-angle end of the corner of the L-shaped movable plate (3).

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