CN221199995U - Positioning structure of light guide plate of backlight module - Google Patents

Abstract

The utility model discloses a positioning structure of a light guide plate of a backlight module, which comprises a mounting block, wherein a plurality of movable blocks are inserted on the mounting block in a sliding way, an adjusting mechanism is arranged between the mounting block and the movable blocks, the adjusting mechanism comprises a gear, a rotating shaft is fixedly inserted in the middle of the gear, a fixed block is fixed on the back of the movable block, a plurality of clamping teeth are fixed on one side of the fixed block, and a limiting mechanism is arranged on the mounting block. According to the utility model, the mounting block and the two movable blocks are moved to the back position of the light guide plate, one movable block is moved, the gear drives the other movable block to move together under the meshing action of the gear and the clamping teeth, the movable block drives the inner wall of the clamping groove on the clamping block to be attached to the right-angle outer wall of the light guide plate, and the two movable blocks and the clamping block are used for compressing and fixing the two corners of the light guide plate, so that the circle center of the mounting block and the center of the light guide plate are positioned on the same straight line, the light guide plates with different sizes are conveniently positioned, and the light guide plate is conveniently mounted.

Description

Positioning structure of light guide plate of backlight module

Technical Field

The utility model relates to the field of light guide plates, in particular to a positioning structure of a light guide plate of a backlight module.

Background

The light guide plate is made of optical acrylic/PC plates, the optical acrylic plates are used for absorbing the light emitted from the lamp to stay on the surfaces of the optical acrylic plates, when the light rays are emitted to each light guide point, the reflected light can be diffused towards each angle, and then the reflection conditions are destroyed and emitted from the front surface of the light guide plate.

The light guide plate is installed on backlight unit, fixes a position the installation through positioning mechanism to the light guide plate, makes accurate erection joint between its and the backlight unit, and because there is the difference in the size of different model light guide plates, need adjust positioning mechanism, common light guide plate positioning mechanism is inconvenient to adjust, reduces its suitability, is inconvenient to fix a position the light guide plate of equidimension.

Disclosure of utility model

The present utility model is directed to a positioning structure of a light guide plate of a backlight module, so as to solve the above-mentioned problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the positioning structure of the light guide plate of the backlight module comprises a mounting block, wherein a plurality of movable blocks are connected to the mounting block in a sliding and penetrating manner and are used for positioning and mounting the light guide plate;

An adjusting mechanism is arranged between the mounting block and the movable block and used for adjusting the positions of one ends of the movable blocks;

The adjusting mechanism comprises a gear, a rotating shaft is fixedly connected in a penetrating manner in the middle of the gear, two ends of the rotating shaft are rotatably connected with the inner wall of the mounting block in a penetrating manner, a fixed block is fixedly connected to the back of the movable block, a plurality of clamping teeth are fixedly connected to one side of the fixed block at equal intervals, and the clamping teeth are meshed with one side of the gear;

and the mounting block is provided with a limiting mechanism for limiting and fixing the movable blocks.

Preferably, the limiting mechanism comprises a bolt, one end of the bolt is connected with the top thread of the mounting block in a penetrating mode, the bottom end of the bolt is rotationally connected with a limiting rod, and the bottom of the limiting rod is connected with the top of the gear in a sliding penetrating mode.

Preferably, the installation block is provided with a plurality of movable grooves, the inner cavities of the movable grooves are connected with one ends of the movable block and the fixed block in a sliding and penetrating mode, and the bottom of the inner wall of the installation block is fixedly connected with a connecting block.

Preferably, both sides at connecting block top all fixedly connected with stopper, the sliding tray has been seted up to one side of movable block, the inner chamber of sliding tray is connected with the one end slip interlude of stopper.

Preferably, the front of movable block one end fixedly connected with fixture block, offered the draw-in groove on the fixture block.

Preferably, the middle part fixedly connected with installation pole at installation piece back, the mounting groove has been seted up at the middle part of installation pole one end.

Preferably, the fixing blocks are symmetrically arranged on two sides of the gear, and the gear is arranged in the inner cavity of the mounting block.

Preferably, the bottom of the limiting rod is arranged in a conical shape, and the movable groove is arranged on one side opposite to the movable blocks.

The utility model has the technical effects and advantages that:

According to the utility model, by means of the arrangement mode that the mounting block, the movable block, the gear, the fixed block, the clamping teeth and the clamping blocks are matched, one movable block is moved to the back surface position of the light guide plate, the gear rotates around the rotating shaft under the meshing action of the gear and the clamping teeth, the gear drives the other movable block to move together, the two movable blocks are regulated together, the movable block drives the clamping blocks to move to one right angle position of the light guide plate, the inner wall of the clamping groove is attached to the right angle outer wall of the light guide plate, and the two movable blocks and the clamping blocks are used for tightly pressing and fixing the two corners of the light guide plate, so that the circle centers of the mounting blocks and the centers of the light guide plates are positioned on the same straight line, and the light guide plates with different sizes are convenient to mount.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model.

FIG. 2 is a schematic view of the back structure of the mounting block of the present utility model.

FIG. 3 is a schematic view of the rear cross-sectional structure of the mounting block of the present utility model.

Fig. 4 is an enlarged schematic view of the structure of fig. 1 at a.

In the figure: 1. a mounting block; 2. a movable block; 3. an adjusting mechanism; 31. a gear; 32. a rotating shaft; 33. a fixed block; 34. latch teeth; 4. a limiting mechanism; 41. a bolt; 42. a limit rod; 43. a movable groove; 44. a connecting block; 45. a limiting block; 46. a sliding groove; 5. a clamping block; 6. a mounting rod; 7. and a mounting groove.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a light guide plate positioning structure of a backlight module, as shown in figures 1-4, which comprises a mounting block 1, wherein the mounting block 1 is used for mounting two movable blocks 2, the front surface of the mounting block 1 is attached to the back surface of the light guide plate, the mounting block 1 is connected with a plurality of movable blocks 2 in a sliding and inserting way, the movable blocks 2 are arranged in a strip shape and are used for positioning and mounting the light guide plate, the movable blocks 2 slide on the mounting block 1 and adjust the positions of one end of the movable blocks 2 and a clamping block 5, and the two movable blocks 2 are arranged at diagonal positions of the back surface of the light guide plate;

an adjusting mechanism 3 is arranged between the mounting block 1 and the movable block 2 and is used for adjusting the positions of one ends of the movable blocks 2, so that the movable blocks 2 can conveniently position light guide plates with different sizes;

The adjusting mechanism 3 comprises a gear 31, the gear 31 is arranged in an inner cavity of the mounting block 1, a rotating shaft 32 is fixedly connected in a penetrating way in the middle of the gear 31, the rotating shaft 32 is used for mounting the gear 31, two ends of the rotating shaft 32 are rotatably connected with the inner wall of the mounting block 1 in a penetrating way, the gear 31 is rotatably mounted in the inner cavity of the mounting block 1 through the rotating shaft 32, the gear 31 rotates in the inner cavity of the mounting block 1, a fixed block 33 is fixedly connected to the back surface of the movable block 2, the fixed block 33 is arranged in a strip shape, one side of the fixed block 33 is fixedly connected with a plurality of clamping teeth 34 at equal intervals along with the movement of the movable block 2, the clamping teeth 34 are in meshed connection with one side of the gear 31, two sides of the gear 31 are respectively in meshed connection with the clamping teeth 34 on the two fixed blocks 33, the gear 31 rotates around the rotating shaft 32 by utilizing the meshing effect of the gear 31, and the gear 31 drives the other movable block 2 to move together, and the two movable blocks 2 are adjusted together;

The mounting block 1 is provided with a limiting mechanism 4 for limiting and fixing the movable blocks 2, so that the stability of the two movable blocks 2 is ensured;

The limiting mechanism 4 comprises a bolt 41, one end of the bolt 41 is connected with the top of the mounting block 1 in a threaded penetrating manner, the bolt 41 rotates on the mounting block 1 in a threaded manner, the bottom end of the bolt 41 is rotationally connected with a limiting rod 42, the bottom of the limiting rod 42 is arranged in a circular truncated cone shape, the bottom of the limiting rod 42 is connected with the top of the gear 31 in a sliding penetrating manner, the bolt 41 is screwed down in a rotating manner, the limiting rod 42 is driven to move vertically downwards, the bottom of the limiting rod 42 is enabled to be in a sliding penetrating manner at the top of the gear 31, and the gear 31 is limited and fixed;

The mounting block 1 is provided with a plurality of movable grooves 43, the movable grooves 43 are used for mounting the movable blocks 2, the inner cavities of the movable grooves 43 are connected with one ends of the movable blocks 2 and the fixed blocks 33 in a sliding and penetrating manner, the movable blocks 2 and the fixed blocks 33 slide in the inner cavities of the movable grooves 43, the bottoms of the inner walls of the mounting block 1 are fixedly connected with connecting blocks 44, and the connecting blocks 44 are arranged in the middle positions of the two movable blocks 2;

The two sides of the top of the connecting block 44 are fixedly connected with a limiting block 45, the limiting block 45 is used for limiting the movable block 2, one side of the movable block 2 is provided with a sliding groove 46, the sliding groove 46 is used for installing the limiting block 45, the inner cavity of the sliding groove 46 is connected with one end of the limiting block 45 in a sliding penetrating way, and along with the movement of the movable block 2, one end of the limiting block 45 slides in the inner cavity of the sliding groove 46 to limit the movement of the movable block 2, so that the stable movement of the movable block 2 is ensured;

the front fixedly connected with fixture block 5 of movable block 2 one end, fixture block 5 moves along with the one end of movable block 2, the draw-in groove has been seted up on the fixture block 5, the draw-in groove is the right angle form setting, the center of two draw-in grooves is in on the same straight line, drive fixture block 5 through movable block 2 and remove one of them right angle position of light guide plate, make the inner wall of draw-in groove and light guide plate right angle outer wall laminate mutually, utilize two movable blocks 2 and fixture block 5 to compress tightly fixedly to the diagonal of light guide plate, the middle part fixedly connected with installation pole 6 at installation piece 1 back, the centre of a circle of installation pole 6 is in on the same straight line with the centre of a circle of installation piece 1, and the centre of a circle of installation piece 1 is in on the same straight line with the center of light guide plate, installation groove 7 has been seted up at the middle part of installation pole 6 one end, installation groove 7 is the square groove setting, the center is in on the same straight line with the centre of a circle of installation pole 6 for install installation piece 1.

The fixed blocks 33 are symmetrically arranged on two sides of the gear 31, the two fixed blocks 33 and the movable block 2 move together through the gear 31, the distance between the clamping blocks 5 at one end of the two movable blocks 2 and the center of the circle of the installation block 1 is consistent, the gear 31 is arranged in the inner cavity of the installation block 1, the bottom of the limiting rod 42 is arranged in a conical shape, and the movable groove 43 is formed in one side opposite to the movable blocks 2.

Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims (8)

1. A backlight module light guide plate positioning structure comprises:

The mounting block (1) is connected with a plurality of movable blocks (2) in a sliding penetrating way, and is used for positioning and mounting the light guide plate;

The method is characterized in that: an adjusting mechanism (3) is arranged between the mounting block (1) and the movable blocks (2) and is used for adjusting the positions of one ends of the movable blocks (2);

The adjusting mechanism (3) comprises a gear (31), a rotating shaft (32) is fixedly connected in a penetrating manner in the middle of the gear (31), two ends of the rotating shaft (32) are rotatably connected with the inner wall of the mounting block (1) in a penetrating manner, a fixed block (33) is fixedly connected to the back of the movable block (2), a plurality of clamping teeth (34) are fixedly connected to one side of the fixed block (33) at equal intervals, and the clamping teeth (34) are connected with one side of the gear (31) in a meshed manner;

And the mounting block (1) is provided with a limiting mechanism (4) for limiting and fixing the movable blocks (2).

2. The backlight module light guide plate positioning structure according to claim 1, wherein the limiting mechanism (4) comprises a bolt (41), one end of the bolt (41) is connected with the top of the mounting block (1) in a threaded penetrating manner, the bottom end of the bolt (41) is rotatably connected with a limiting rod (42), and the bottom of the limiting rod (42) is connected with the top of the gear (31) in a sliding penetrating manner.

3. The positioning structure of a light guide plate of a backlight module according to claim 2, wherein the mounting block (1) is provided with a plurality of movable grooves (43), the inner cavity of each movable groove (43) is connected with one ends of the movable block (2) and the fixed block (33) in a sliding and penetrating manner, and the bottom of the inner wall of the mounting block (1) is fixedly connected with a connecting block (44).

4. A backlight module light guide plate positioning structure according to claim 3, wherein two sides of the top of the connecting block (44) are fixedly connected with limiting blocks (45), a sliding groove (46) is formed in one side of the movable block (2), and an inner cavity of the sliding groove (46) is connected with one end of the limiting block (45) in a sliding penetrating and inserting mode.

5. The positioning structure of a light guide plate of a backlight module according to claim 1, wherein a clamping block (5) is fixedly connected to the front surface of one end of the movable block (2), and a clamping groove is formed in the clamping block (5).

6. The positioning structure of a light guide plate of a backlight module according to claim 1, wherein a mounting rod (6) is fixedly connected to the middle of the back of the mounting block (1), and a mounting groove (7) is formed in the middle of one end of the mounting rod (6).

7. The positioning structure of a light guide plate of a backlight module according to claim 1, wherein a plurality of the fixing blocks (33) are symmetrically arranged at two sides of a gear (31), and the gear (31) is arranged in an inner cavity of the mounting block (1).

8. A backlight module light guide plate positioning structure according to claim 3, wherein the bottom of the limiting rod (42) is conical, and the movable groove (43) is arranged at one side opposite to the movable blocks (2).