Positioning assembly for LED backlight circuit board

Abstract

The utility model discloses a positioning assembly for an LED backlight circuit board, which comprises a display screen and a mounting frame, the mounting frame is arranged in an inner cavity of the display screen, and the rear side of the mounting frame is movably connected with a circuit board. Through cooperative use of a positioning structure, a positioning clamping block, a limiting hole, a limiting rod, a spring and a positioning groove, the problems that in existing actual operation, an appropriate tool needs to be selected according to the specific model and the installation requirement of the LED backlight circuit board, the LED backlight circuit board usually needs to be positioned through tools such as screws, and due to the fact that an installation piece is small in size, the installation piece is not convenient to use are solved. In the prior art, screws with small sizes need to be used, a plurality of small screws need to be continuously rotated manually during installation, the work content is fine, manpower and time are consumed, bolts are prone to loosening, and the phenomenon of unstable installation is caused. However, an existing LED backlight circuit board is not provided with a positioning assembly which can be conveniently and stably installed on a display screen.

Description

Technical Field

[0001] The utility model belongs to the technical field of LED backlight circuit boards, and particularly relates to a positioning component for an LED backlight circuit board. Background Art

[0002] The LED backlight circuit board is a key component in a liquid crystal display for providing uniform backlight. Since liquid crystal itself does not emit light and needs backlight to illuminate the liquid crystal layer so that the display content can be seen, the LED backlight circuit board usually includes LED lamp beads, a circuit board, a driving circuit, and optical elements for mixing and distributing light. To sum up, the problems existing in the prior art are as follows: In actual operation, appropriate tools should be selected according to the specific model and installation requirements of the LED backlight circuit board. Usually, tools such as screws are needed for positioning the LED backlight circuit board. Due to the small volume of the installation parts, screws with small sizes are required, and during installation, multiple small-sized screws need to be continuously rotated manually. The work content is relatively delicate, which not only consumes manpower but also takes a long time, and the bolts are prone to looseness, resulting in unstable installation. However, there is no convenient and stable positioning component for installing the existing LED backlight circuit board on the display screen. Therefore, a positioning component for an LED backlight circuit board is specifically proposed to solve the above problems. Summary of the Invention

[0003] Aiming at the problems existing in the prior art, the utility model provides a positioning component for an LED backlight circuit board, which has the advantages of enabling the LED backlight circuit board to be conveniently and stably installed on the display screen, and solves the problems that in actual operation, appropriate tools should be selected according to the specific model and installation requirements of the LED backlight circuit board. Usually, tools such as screws are needed for positioning the LED backlight circuit board. Due to the small volume of the installation parts, screws with small sizes are required, and during installation, multiple small-sized screws need to be continuously rotated manually. The work content is relatively delicate, which not only consumes manpower but also takes a long time, and the bolts are prone to looseness, resulting in unstable installation. However, there is no convenient and stable positioning component for installing the existing LED backlight circuit board on the display screen.

[0004] The utility model is implemented as follows. A positioning component for an LED backlight circuit board includes a display screen and an installation frame. The installation frame is arranged in the inner cavity of the display screen. A circuit board is movably connected to the rear side of the installation frame. Four positioning shells are fixedly connected to the front side of the circuit board. The surface of the positioning shell is in contact with the inner cavity of the installation frame. A moving control block is movably connected to the inner cavity of the positioning shell. One side of the moving control block away from the circuit board penetrates through the positioning shell and extends to the outside of the inner cavity of the positioning shell. A positioning structure is arranged inside the positioning shell.

[0005] Preferably, the positioning structure of the present utility model includes two positioning blocks. One side of each positioning block away from the moving control block penetrates through the positioning shell and extends to the outside of the inner cavity of the positioning shell. A limiting hole is formed on the surface of the positioning block. Two limiting rods that cooperate with the limiting hole are fixedly connected to the inner cavity of the positioning shell. The inner cavity of the limiting hole is movably connected to the surface of the limiting rod. A spring is fixedly connected to one side of the positioning block close to the moving control block, and the side of the spring close to the inner cavity of the positioning shell is fixedly connected to the inner cavity of the positioning shell. By providing the positioning structure, when the circuit board moves into the inner cavity of the display screen, the positioning structure has a limiting effect on the position of the circuit board.

[0006] Preferably, a moving extrusion rod is fixedly connected to one side of the positioning block close to the moving control block. By providing the moving extrusion rod, when the moving extrusion rod moves, it can drive the positioning block to move.

[0007] Preferably, two extrusion rotating rods that cooperate with the moving extrusion rod are movably connected to the rear side of the inner cavity of the positioning shell through a rotating shaft. The surface of the extrusion rotating rod is in contact with the surface of the moving extrusion rod, and the surface of the moving control block is in contact with the surface of the extrusion rotating rod. By providing the extrusion rotating rod, when the extrusion rotating rod rotates through the rotating shaft, it can generate an extrusion force on the moving extrusion rod, and the extrusion force generated by the extrusion rotating rod on the moving extrusion rod can drive the moving extrusion rod to move.

[0008] Preferably, a moving block is fixedly connected to the inner cavity of the positioning shell. A moving hole that cooperates with the moving block is formed on the surface of the moving control block. The surface of the moving block is movably connected to the inner cavity of the moving hole. By providing the moving block and the moving hole, when the moving control block moves, it will drive the moving hole to move along the surface of the moving block. The cooperation of the moving block and the moving hole has a limiting effect on the moving position of the moving control block.

[0009] Preferably, control rods are provided on both the left and right sides of the circuit board. The rear side of the control rod is fixedly connected to the surface of the moving control block. By providing the control rods, the two moving control blocks can move simultaneously, increasing the convenience of use.

[0010] Preferably, four positioning grooves that cooperate with the positioning blocks are formed on the surface of the installation frame. The surface of the positioning block is in contact with the inner cavity of the positioning groove. By providing the positioning grooves, when the positioning shell moves into the inner cavity of the installation frame and the two control rods are released, the restoring force generated by the spring restoring its shape will drive the positioning block to snap into the inner cavity of the positioning groove. The cooperation of the positioning block and the positioning groove has a limiting effect on the position of the positioning shell.

[0011] 1. By using the positioning structure, positioning block, limiting hole, limiting rod, spring and positioning groove in cooperation, the utility model solves the problem that in actual operation, appropriate tools should be selected according to the specific model and installation requirements of the LED backlight circuit board. Usually, tools such as screws are needed for positioning the LED backlight circuit board. Due to the small volume of the installation parts, small-sized screws are required, and during installation, multiple small-sized screws need to be manually rotated continuously. The work content is relatively delicate, which not only consumes manpower but also takes a long time, and the bolts are prone to looseness, resulting in unstable installation. However, there is no convenient and stable positioning component for installing the existing LED backlight circuit board on the display screen.

[0012] 2. By setting the positioning structure, when the moving extrusion rod moves, it will drive the positioning block to move towards the side close to the control rod. When the positioning block moves, it will drive the limiting hole to move along the surface of the limiting rod. At the same time, the extrusion force generated by the movement of the positioning block will cause the spring to undergo elastic deformation. The restoring force generated when the spring returns to its original shape will drive the positioning block to snap into the inner cavity of the positioning groove, and the positioning structure has a limiting effect on the position of the circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional structure schematic diagram provided by an embodiment of the utility model;

[0014] Figure 2 is a three-dimensional connection schematic diagram of a display screen, an installation frame and a circuit board provided by an embodiment of the utility model;

[0015] Figure 3 is a three-dimensional connection schematic diagram of a positioning shell and an installation frame provided by an embodiment of the utility model;

[0016] Figure 4 is a three-dimensional sectional view of the positioning shell provided by an embodiment of the utility model.

[0017] In the figure: 1, display screen; 2, installation frame; 3, circuit board; 4, positioning shell; 5, control block; 6, positioning structure; 601, positioning block; 602, limiting hole; 603, limiting rod; 604, spring; 7, moving extrusion rod; 8, extrusion rotating rod; 9, moving block; 10, moving hole; 11, control rod; 12, positioning groove. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] In order to further understand the invention content, features and effects of the utility model, the following embodiments are cited and detailed description is given in conjunction with the accompanying drawings as follows.

[0019] The structure of the utility model will be described in detail below with reference to the accompanying drawings.

[0020] Such as Figures 1 to 4As shown in the figure, a positioning component for an LED backlight circuit board provided by an embodiment of the present utility model includes a display screen 1 and a mounting frame 2. The mounting frame 2 is arranged inside the display screen 1. A circuit board 3 is movably connected to the rear side of the mounting frame 2. Four positioning shells 4 are fixedly connected to the front side of the circuit board 3. The surface of the positioning shell 4 is in contact with the inner cavity of the mounting frame 2. A moving control block 5 is movably connected to the inner cavity of the positioning shell 4. One side of the moving control block 5 away from the circuit board 3 penetrates through the positioning shell 4 and extends to the outside of the inner cavity of the positioning shell 4. A positioning structure 6 is arranged inside the positioning shell 4.

[0021] Reference Figure 4 , the positioning structure 6 includes two positioning blocks 601. One side of the positioning block 601 away from the moving control block 5 penetrates through the positioning shell 4 and extends to the outside of the inner cavity of the positioning shell 4. A limiting hole 602 is formed on the surface of the positioning block 601. Two limiting rods 603 which are used in cooperation with the limiting hole 602 are fixedly connected to the inner cavity of the positioning shell 4. The inner cavity of the limiting hole 602 is movably connected to the surface of the limiting rod 603. One side of the positioning block 601 close to the moving control block 5 is fixedly connected to a spring 604. One side of the spring 604 close to the inner cavity of the positioning shell 4 is fixedly connected to the inner cavity of the positioning shell 4.

[0022] With the above scheme: by arranging the positioning structure 6, when the circuit board 3 moves into the inner cavity of the display screen 1, the positioning structure 6 has a limiting effect on the position of the circuit board 3.

[0023] Reference Figure 4 , a moving extrusion rod 7 is fixedly connected to one side of the positioning block 601 close to the moving control block 5.

[0024] With the above scheme: by arranging the moving extrusion rod 7, when the moving extrusion rod 7 moves, it can drive the positioning block 601 to move.

[0025] Reference Figure 4 , two extrusion rotating rods 8 which are used in cooperation with the moving extrusion rod 7 are movably connected to the rear side of the inner cavity of the positioning shell 4 through a rotating shaft. The surface of the extrusion rotating rod 8 is in contact with the surface of the moving extrusion rod 7. The surface of the moving control block 5 is in contact with the surface of the extrusion rotating rod 8.

[0026] With the above scheme: by arranging the extrusion rotating rod 8, when the extrusion rotating rod 8 rotates through the rotating shaft, it can generate an extrusion force on the moving extrusion rod 7. The extrusion force generated by the extrusion rotating rod 8 on the moving extrusion rod 7 can drive the moving extrusion rod 7 to move.

[0027] Reference Figure 4 , a moving block 9 is fixedly connected to the inner cavity of the positioning shell 4. A moving hole 10 which is used in cooperation with the moving block 9 is formed on the surface of the moving control block 5. The surface of the moving block 9 is movably connected to the inner cavity of the moving hole 10.

[0028] Adopting the above solution: By setting the movable clamping block 9 and the movable hole 10, when the movable control block 5 moves, it will drive the movable hole 10 to move along the surface of the movable clamping block 9. The combined use of the movable clamping block 9 and the movable hole 10 has a limiting effect on the moving position of the movable control block 5.

[0029] Reference Figure 4 , control rods 11 are also provided on both the left and right sides of the circuit board 3, and the rear side of the control rod 11 is fixedly connected to the surface of the movable control block 5.

[0030] Adopting the above solution: By setting the control rod 11, the setting of the control rod 11 enables the two movable control blocks 5 to move simultaneously, increasing the convenience of use.

[0031] Reference Figure 3 , four positioning slots 12 for cooperating with the positioning clamping blocks 601 are provided on the surface of the mounting frame 2, and the surface of the positioning clamping block 601 is in contact with the inner cavity of the positioning slot 12.

[0032] Adopting the above solution: By setting the positioning slot 12, when the positioning shell 4 moves into the inner cavity of the mounting frame 2 and the two control rods 11 are released, the restoring force generated by the spring 604 restoring its shape will drive the positioning clamping block 601 to snap into the inner cavity of the positioning slot 12. The combined use of the positioning clamping block 601 and the positioning slot 12 has a limiting effect on the position of the positioning shell 4.

[0033] During use, when the LED backlight circuit board needs to be conveniently and stably installed on the display screen 1, first, the operator presses the control rods 11 on the side opposite to each other. When the control rods 11 move, they will drive the movable control blocks 5 to move towards the side close to the circuit board 3. When the movable control blocks 5 move, they will drive the movable holes 10 to move along the surface of the movable clamping blocks 9. At the same time, the movable control blocks 5 will exert a squeezing force on the extrusion rotating rods 8. The two extrusion rotating rods 8 subjected to the squeezing force will rotate along the surface of the movable extrusion rod 7 through the rotating shaft. When the movable extrusion rod 7 moves, it will drive the positioning clamping block 601 to move towards the side close to the control rod 11. When the positioning clamping block 601 moves, it will drive the limiting hole 602 to move along the surface of the limiting rod 603. At the same time, the squeezing force generated by the movement of the positioning clamping block 601 will cause the spring 604 to undergo elastic deformation. When the positioning clamping block 601 completely moves into the inner cavity of the positioning shell 4, the positioning shell 4 is moved into the inner cavity of the mounting frame 2, and at the same time, the circuit board 3 is driven to move into the inner cavity of the display screen 1. Then, the two control rods 11 are released, and the restoring force generated by the spring 604 restoring its shape will drive the positioning clamping block 601 to snap into the inner cavity of the positioning slot 12. The combined use of the positioning clamping block 601 and the positioning slot 12 has a limiting effect on the positions of the positioning shell 4 and the circuit board 3. At this time, the LED backlight circuit board is conveniently and stably installed on the display screen 1.

[0034] In summary, for the positioning component of the LED backlight circuit board, by setting the positioning structure 6, positioning block 601, limiting hole 602, limiting rod 603, spring 604 and positioning groove 12 to cooperate with each other, it solves the problem that in actual operation, appropriate tools should be selected according to the specific model and installation requirements of the LED backlight circuit board. Usually, tools such as screws are needed to position the LED backlight circuit board. Due to the small volume of the installation parts, screws with small sizes are required, and multiple small screws need to be rotated manually during installation. The work content is relatively delicate, which not only consumes manpower but also takes a long time, and the bolts are prone to looseness, resulting in unstable installation. However, there is no positioning component that can conveniently and stably install the existing LED backlight circuit board on the display screen.

[0035] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A positioning assembly for an LED backlight circuit board, comprising a display screen (1) and a mounting frame (2), characterized in that: The mounting frame (2) is arranged in the inner cavity of the display screen (1); the rear side of the mounting frame (2) is movably connected to a circuit board (3); the front side of the circuit board (3) is fixedly connected to four positioning shells (4); the surface of the positioning shell (4) is in contact with the inner cavity of the mounting frame (2); the inner cavity of the positioning shell (4) is movably connected to a movable control block (5); a side of the movable control block (5) away from the circuit board (3) penetrates the positioning shell (4) and extends to the outside of the inner cavity of the positioning shell (4); and a positioning structure (6) is arranged inside the positioning shell (4).

2. A positioning assembly for an LED backlight circuit board as claimed in claim 1, characterized in that: The positioning structure (6) comprises two positioning blocks (601); a side of the positioning block (601) away from the movable control block (5) passes through the positioning shell (4) and extends to the outside of the inner cavity of the positioning shell (4); a limiting hole (602) is provided on the surface of the positioning block (601); the inner cavity of the positioning shell (4) is fixedly connected with two limiting rods (603) used in conjunction with the limiting holes (602); the inner cavity of the limiting holes (602) is movably connected to the surface of the limiting rods (603); a side of the positioning block (601) close to the movable control block (5) is fixedly connected with a spring (604); a side of the spring (604) close to the inner cavity of the positioning shell (4) is fixedly connected to the inner cavity of the positioning shell (4).

3. A positioning assembly for an LED backlight circuit board as claimed in claim 2, characterized in that: A movable extrusion rod (7) is fixedly connected to one side of the positioning block (601) close to the movable control block (5).

4. A positioning assembly for an LED backlight circuit board as claimed in claim 3, characterized in that: The rear side of the inner cavity of the positioning shell (4) is movably connected to two extrusion rotating rods (8) for use with the movable extrusion rod (7) via a rotating shaft, the surface of the extrusion rotating rod (8) being in contact with the surface of the movable extrusion rod (7), and the surface of the movable control block (5) being in contact with the surface of the extrusion rotating rod (8).

5. A positioning assembly for an LED backlight circuit board as claimed in claim 1, characterized in that: A moving card block (9) is fixedly connected to the inner cavity of the positioning shell (4), a moving hole (10) for use with the moving card block (9) is provided on the surface of the moving control block (5), and the surface of the moving card block (9) is movably connected to the inner cavity of the moving hole (10).

6. A positioning assembly for an LED backlight circuit board as claimed in claim 1, characterized in that: Control rods (11) are provided on both the left and right sides of the circuit board (3), and the rear side of the control rods (11) is fixedly connected to the surface of the movable control block (5).

7. A positioning assembly for an LED backlight circuit board as claimed in claim 2, characterized in that: The surface of the installation frame (2) is provided with four positioning grooves (12) for use with the positioning block (601), and the surface of the positioning block (601) is in contact with the inner cavity of the positioning groove (12).

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