CN216979528U - Cascaded center and backlight unit of backlight unit - Google Patents

Abstract

The utility model discloses a stepped middle frame of a backlight module and a backlight module, comprising a module structure and a frame, wherein the module structure comprises an upper diffusion sheet, a prism sheet, a lower diffusion sheet, a light guide plate and a reflection sheet , the inner side, front, rear and left side of the frame are provided with limit ladder blocks, the limit ladder blocks are provided with a plurality of and are composed of steps, the right end of the frame is provided with a limit frame, and the right end of the frame is set on the front and rear sides. Slots are provided throughout, the front and rear of the right end of the frame and relative to the slot are provided with through openings, the front and rear of the right end of the frame and both sides relative to the through openings are provided with placement grooves, the placement The inner rear end of the groove is provided with a limit cylinder, the interior of the limit cylinder is slidably connected with a rebound plate, one end of the rebound plate is provided with a connecting rod, and the outer end of the connecting rod is inside the limit cylinder. Provided with springs. In the utility model, it can effectively facilitate disassembly and assembly, and is convenient to use.

Description

A stepped middle frame of a backlight module and a backlight module

technical field

The utility model relates to the field of backlight modules, in particular to a stepped middle frame of a backlight module and a backlight module.

Background technique

The backlight module is one of the key components of the LCD panel. The function is to supply sufficient brightness and evenly distributed light source, so that it can display images normally. The backlight source is a light source located behind the liquid crystal display, and its luminous effect will directly affect the visual effect of the liquid crystal display module. The liquid crystal itself does not emit light, it displays graphics or characters as a result of its modulation of light.

At this stage, there are still some deficiencies in the use of the middle frame of the backlight module, the supporting effect is not good, and it is inconvenient to operate and use, and it is inconvenient to disassemble and use. Easy to use, it can be effectively disassembled and used to improve the efficiency of use.

Utility model content

The purpose of the present utility model is to solve the shortcomings existing in the prior art, and propose a stepped middle frame of a backlight module and a backlight module.

In order to achieve the above purpose, the present invention adopts the following technical solutions: a stepped middle frame of a backlight module and a backlight module, including a module structure and a frame, the module structure includes an upper diffusion sheet, a prism sheet, Lower diffuser, light guide plate and reflector;

The inner side, front, rear, and left side of the frame are provided with limit ladder blocks, and the limit ladder blocks are provided with a plurality of ladder blocks. The right end of the frame is provided with a limit frame. A slot is arranged through the frame, a through opening is arranged through the front and rear of the right end of the frame and relative to the slot, and a placement groove is provided through the front and rear of the right end of the frame and relative to both sides of the through opening. There is a limit cylinder at the inner rear end of the limit cylinder, a rebound plate is slidably connected to the inside of the limit cylinder, one end of the rebound plate is provided with a connecting rod, and the outer end of the connecting rod is set inside the limit cylinder There are springs.

As a further description of the above technical solution:

An anti-skid pad is arranged on the lower end surface of the limit ladder block.

As a further description of the above technical solutions:

The upper diffusing sheet, the prism sheet, the lower diffusing sheet, the light guide plate and the reflecting sheet are respectively inserted between the limiting ladder blocks.

As a further description of the above technical solution:

One end of the connecting rod is provided with a pull plate relative to the outer end of the frame.

As a further description of the above technical solution:

A positioning block is arranged in the middle of the pulling plate and relative to the through opening.

As a further description of the above technical solution:

Insert blocks are arranged on the front and rear sides of the left end of the limiting frame, and positioning grooves are arranged through the side surfaces of the insert blocks.

The utility model has the following beneficial effects:

1. A stepped middle frame and a backlight module of a backlight module of the present invention, the upper diffuser, the prism sheet, the lower diffuser, the light guide plate and the reflective sheet are respectively inserted between the limit ladder blocks, effectively forming a position. The limited support is used to effectively facilitate its single replacement and use, and the anti-skid use is formed by the anti-skid pad to avoid position deviation during use;

2. The stepped middle frame of the backlight module and the backlight module of the present utility model, the positioning block at the pull plate is moved to the inside of the through opening by pulling the pull plate, and the insert blocks on the left and rear sides of the limit frame are inserted into the opening. Inside the slot at the right end of the frame, let go of the pull plate, the rebound force generated by the spring in the limit cylinder acts on the rebound plate, and the rebound force is applied to the pull plate through the connecting rod to position the block at the pull plate. It springs back to the inside of the positioning groove at the insert block to form support for the insert block position, which is convenient for installation and use, and is effectively convenient for disassembly, replacement and use, and improves the convenience of use.

Description of drawings

1 is an appearance view of a stepped middle frame of a backlight module and a backlight module proposed by the utility model;

2 is a bottom view of a stepped middle frame of a backlight module and a limit ladder block of the backlight module proposed by the present invention;

3 is a schematic structural diagram of a stepped middle frame of a backlight module and a limit frame of the backlight module proposed by the present invention;

4 is a schematic structural diagram of one side of a stepped middle frame of a backlight module and a frame of a backlight module proposed by the present invention;

FIG. 5 is an enlarged schematic view of the structure at A in FIG. 4 .

illustration:

1. Limiting ladder block; 2. Module structure; 201, upper diffuser; 202, prism sheet; 203, lower diffuser; 204, light guide plate; 205, reflective sheet; 3, frame; 4, pull plate; 5 , limit frame; 6, anti-skid pad; 7, positioning slot; 8, insert block; 9, port; 10, positioning block; 11, slot; 12, placement slot; 13, limit cylinder; 14, rebound plate; 15, spring; 16, connecting rod.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner" and "outer" The orientation or positional relationship indicated by etc. is based on the orientation or positional relationship shown in the accompanying drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, with a specific orientation. Therefore, it should not be construed as a limitation to the present invention; the terms "first", "second" and "third" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance. In addition, Unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should 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, It can also be an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or an internal connection between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in specific situations.

1-5, an embodiment provided by the present invention: a stepped middle frame of a backlight module and a backlight module, including a module structure 2 and a frame 3, and the module structure 2 includes an upper diffuser 201 , prism sheet 202, lower diffusion sheet 203, light guide plate 204 and reflection sheet 205, the inner side, front, rear and left side of the frame 3 are provided with limit ladder blocks 1, and the limit ladder blocks 1 are provided with a plurality of steps and are composed of steps. The diffusing sheet 201 , the prism sheet 202 , the lower diffusing sheet 203 , the light guide plate 204 and the reflecting sheet 205 are respectively inserted between the limiting ladder blocks 1 , effectively forming a pair of the upper diffusing sheet 201 , the prism sheet 202 , the lower diffusing sheet 203 , the guiding The position of the light plate 204 and the reflective sheet 205 is limited and used for support, so as to effectively facilitate their single replacement and use. The lower end surface of the limiting ladder block 1 is provided with a non-slip pad 6, through which the upper diffuser 201, the prism sheet 202, the lower The diffusing sheet 203, the light guide plate 204 and the reflective sheet 205 are used for anti-skid use to avoid position shift during use;

The right end of the frame 3 is provided with a limit frame 5, the left end of the limit frame 5 is provided with an insert block 8 on the front and rear sides, the side of the insert block 8 is provided with a positioning slot 7, and the front and rear sides of the right end of the frame 3 are provided with a slot 11. , the front and rear of the right end of the frame 3 and relative to the slot 11 are provided with a through opening 9, the front and rear of the right end of the frame 3 and relative to both sides of the through opening 9 are provided with a placement slot 12, the inner rear end of the placement slot 12 A limit cylinder 13 is provided, the interior of the limit cylinder 13 is slidably connected with a rebound plate 14 , one end of the rebound plate 14 is provided with a connecting rod 16 , and the outer end of the connecting rod 16 is provided with a spring 15 inside the limit cylinder 13 , one end of the connecting rod 16 and the outer end of the frame 3 is provided with a pull plate 4, the middle of the pull plate 4 is provided with a positioning block 10 relative to the opening 9, and the positioning block 10 at the pull plate 4 is positioned by pulling the pull plate 4. Move to the inside of the port 9, insert the insert block 8 on the left end front and rear side of the limit frame 5 into the inside of the right end slot 11 of the frame 3, let go of the pull plate 4, and pass the return generated by the spring 15 in the limit cylinder 13. The elastic force acts on the rebound plate 14, and the elastic force acts on the pull plate 4 through the connecting rod 16 to rebound the positioning block 10 at the pull plate 4 to the interior of the positioning groove 7 at the insert block 8, forming a pair of insert blocks. 8-position support is used to facilitate installation and use.

Working principle: The upper diffuser 201, the prism sheet 202, the lower diffuser 203, the light guide plate 204 and the reflection sheet 205 are respectively inserted between the limit ladder blocks 1, and are used for limited support. The positioning block 10 is moved to the inside of the port 9, and inserted into the inner slot 11 of the right end of the frame 3 through the insert block 8 on the front and rear sides of the left end of the limit frame 5, and the pull plate 4 is released. The generated rebound force acts on the rebound plate 14, and through the connecting rod 16, the rebound force acts on the pull plate 4 to rebound the positioning block 10 at the pull plate 4 to the interior of the positioning groove 7 at the insert block 8, forming a It is used for the 8-position support of the insert block.

Finally, it should be noted that the above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. , it can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements to some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model, All should be included within the protection scope of the present invention.

Claims (7)

1. The utility model provides a cascaded center of backlight unit, includes module structure (2) and frame (3), its characterized in that: the module structure (2) comprises an upper diffusion sheet (201), a prism sheet (202), a lower diffusion sheet (203), a light guide plate (204) and a reflection sheet (205);

the left sides of the front and the back of the inner side of the frame (3) are provided with a limit ladder block (1), the limiting ladder blocks (1) are arranged in a plurality of step-shaped assemblies, the right end of the frame (3) is provided with a limiting frame (5), slots (11) are respectively arranged at the front side and the rear side of the right end of the frame (3) in a penetrating way, through holes (9) are arranged at the front side and the rear side of the right end of the frame (3) in a penetrating way relative to the slots (11), the front and back surfaces of the right end of the frame (3) and two sides corresponding to the through hole (9) are respectively provided with a placing groove (12) in a penetrating way, a limiting cylinder (13) is arranged at the rear end of the interior of the placing groove (12), a rebound plate (14) is connected to the interior of the limiting cylinder (13) in a sliding manner, one end of the rebound plate (14) is provided with a connecting rod (16), and the outer end of the connecting rod (16) and the inside of the limiting cylinder (13) are provided with a spring (15).

2. The stepped middle frame of a backlight module according to claim 1, wherein: and the lower end surface of the limiting ladder block (1) is provided with an anti-slip pad (6).

3. The stepped middle frame of a backlight module according to claim 2, wherein: the upper diffusion sheet (201), the prism sheet (202), the lower diffusion sheet (203), the light guide plate (204) and the reflection sheet (205) are respectively and correspondingly inserted between the limiting ladder blocks (1).

4. The stepped middle frame of a backlight module according to claim 3, wherein: and a pulling plate (4) is arranged at one end of the connecting rod (16) and is opposite to the outer end of the frame (3).

5. The stepped middle frame of a backlight module according to claim 4, wherein: and a positioning block (10) is arranged in the middle of the pulling plate (4) and opposite to the through hole (9).

6. The stepped middle frame of a backlight module according to claim 5, wherein: the left end front and back side of spacing (5) all is provided with inserted block (8), the side of inserted block (8) is run through and is provided with constant head tank (7).

7. The utility model provides a cascaded backlight unit of backlight unit which characterized in that: a stepped middle frame comprising the backlight module of any one of claims 1-6.

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