Ultra-thin rear shell assembly structure

Abstract

The utility model provides an ultrathin back shell assembly structure, which relates to the technical field of display screen assembly, and comprises a plurality of clamping blocks, a back shell plate is arranged on one side of a back plate, a plurality of clamping devices are arranged in the back shell plate, one side of a fixing block is rotatably connected with a rotating shaft, and the rotating shaft is connected with the clamping blocks. The outer surface of the rotating shaft is fixedly connected with a positioning block, the top end of the positioning block is fixedly connected with a round rod, the top end of the positioning block is provided with a spring, the top end of the spring is provided with a baffle ring, and one side of the top end of the rear shell plate is provided with a plurality of oval grooves. When one end of the clamping block makes contact with one end of the positioning block, the positioning block rotates, the clamping block and the positioning block are clamped without deforming the positioning block, it is avoided as much as possible that one end of the positioning block is stressed and fractured, and clamping of the positioning block and the clamping block is conveniently released by pulling a round rod to move; and the convenience when the rear shell plate and the back plate are disassembled and assembled is improved.

Description

Technical Field

[0001] This utility model relates to the field of display screen assembly technology, and in particular to an ultra-thin back shell assembly structure. Background Technology

[0002] The LCD backplane is an important component of an LCD screen. It contains an array of thin-film transistors that control the deflection of liquid crystal molecules. The back cover of the display screen is an important component of the display device, used to protect the electronic components inside the display screen. When assembling the display screen, the LCD backplane needs to be connected to the back cover of the display screen.

[0003] To save costs, when assembling the back cover of the display screen with the LCD back panel, the intermediate part between the back cover and the LCD back panel is omitted, and a snap-fit ​​structure is used directly for connection. However, the snap-fit ​​structure is fixed by the deformation of plastic material during installation, which makes it difficult to disassemble and repair the back cover and back panel and is prone to breakage of the snap-fit ​​structure. Utility Model Content

[0004] The purpose of this utility model is to solve the problem that when assembling the back cover of a display screen with the LCD back panel, in order to save costs, the intermediate part between the back cover and the LCD back panel is omitted and a snap-fit ​​structure is used for connection. However, the snap-fit ​​structure is fixed by the deformation of plastic material during installation, which makes it difficult to disassemble and repair the back cover and the back panel and easily leads to the snap-fit ​​structure breaking. Therefore, an ultra-thin back cover assembly structure is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an ultra-thin back shell assembly structure, comprising several locking blocks, a back plate for supporting the locking blocks fixedly connected to one side of each locking block, a back shell plate provided on one side of the back plate, and several locking devices for engaging with the locking blocks provided inside the back shell plate, the number of locking blocks being the same as the number of locking devices, each locking device including a fixing block, one side of the fixing block being fixedly connected to one side of the back shell plate, a rotating shaft rotatably connected to one side of the fixing block, a positioning block fixedly connected to the outer surface of the rotating shaft, a round rod fixedly connected to the top of the positioning block, a spring provided at the top of the positioning block, a retaining ring provided at the top of the spring, the inner wall of the retaining ring sliding on the outer surface of the round rod, the upper and lower ends of the spring being fixedly connected to the bottom end of the retaining ring and the top of the positioning block, respectively, and several elliptical grooves opened on one side of the top of the back shell plate, the top part of the outer surface of the round rod being located inside the elliptical grooves.

[0006] The effect achieved by the above components is as follows: When the back plate and the rear shell are connected by a snap-fit ​​device, several snap-fit ​​blocks on the inner wall of the back plate are aligned with several positioning blocks inside the rear shell, pushing the back plate towards the rear shell. When the snap-fit ​​blocks on the outer surface of the back plate contact one end of the positioning block on the inner wall of the rear shell, the positioning block is pushed to rotate upward by the rotating shaft to change its angle. At the same time, the round rod at the top of the positioning block moves a certain distance inside the elliptical groove, and the retaining ring at the top of the spring abuts against the top of the inner wall of the rear shell, compressing the spring. When one end of the snap-fit ​​block enters behind the positioning block, the compressed spring returns to its original shape and pushes the positioning block and the rotating shaft downward. The mechanism moves the positioning block to fix it on one side of the locking block and engages with it, connecting the back plate and the rear shell. When it is necessary to disassemble the back plate and the rear shell, pull the round rod at the elliptical groove to control the positioning block to rotate upwards. Then pull the back plate to move away from the rear shell so that the locking block is away from the bottom of the positioning block and the engagement is released. The positioning block rotates when one end of the locking block contacts one end of the positioning block. The locking block engages with the positioning block without deforming it, thus avoiding the possibility of the positioning block breaking under stress. Pulling the round rod makes it easy to disengage the positioning block from the locking block, improving the convenience of disassembling and assembling the rear shell and the back plate.

[0007] Preferably, the top end of the round rod has two auxiliary grooves, which are located on both sides of the top end of the round rod.

[0008] The effect achieved by the above components is that when it is necessary to pull the round rod to control the rotation of the positioning block, the auxiliary grooves on both sides of the top of the round rod can be pinched to make it easier to control the round rod to drive the positioning block to rotate.

[0009] Preferably, a support rod is fixedly connected to the bottom end of the fixing block, and the end of the support rod away from the fixing block is located below the positioning block.

[0010] The effect achieved by the above components is that after the locking block and the positioning block are engaged, the support rod can support the bottom of the positioning block, so as to avoid the problem of unstable engagement caused by the positioning block rotating downward when the locking block moves away from the positioning block.

[0011] Preferably, a washer ring is fixedly connected to the top end of the retaining ring, and the washer ring is made of rubber.

[0012] The effect achieved by the above components is that by setting a rubber gasket, the top of the elliptical groove and the inner wall of the rear shell can be sealed, thus preventing dust from entering the interior of the rear shell through the elliptical groove as much as possible.

[0013] Preferably, the inner diameter of the spring is slightly larger than the diameter of the round rod, and the spring is located on the outside of the round rod.

[0014] The effect achieved by the above components is that when the positioning block rotates and the spring deforms, the spring will move on the outside of the round rod. The round rod can reinforce the internal shape of the spring and prevent the spring from twisting laterally, thus affecting normal use.

[0015] Preferably, the top of the rear shell plate is provided with a plurality of positioning devices, the positioning devices including an L-shaped block, the bottom end of the L-shaped block being fixedly connected to the top of the rear shell plate, a screw being fixedly connected to the top of the L-shaped block, a threaded ring being threadedly connected to the outer surface of the screw, a circular ring being rotatably connected to the bottom end of the threaded ring, one end of the circular ring sliding on one side of the inner wall of the L-shaped block, and a pressure block being fixedly connected to one end of the circular ring.

[0016] The effect achieved by the above components is as follows: after connecting the rear shell plate and the back plate with the snap-fit ​​device and the snap-fit ​​block, the threaded ring can be rotated on the outside of each elliptical groove at the top of the rear shell plate, so that the threaded ring moves downward on the outer surface of the screw, pushes one end of the ring to slide downward on the inner wall of the L-shaped rod, and drives the pressure block to move downward to press one side of the pressure block against the top of the round rod, so as to avoid the positioning block from accidentally rotating and causing the engagement with the snap-fit ​​block to loosen.

[0017] Preferably, a plurality of protrusions are fixedly connected to the outer surface of the threaded ring, and the protrusions are circumferentially distributed on the outer surface of the threaded ring.

[0018] The effect achieved by the above components is that by pressing the protrusion on the outer surface of the threaded ring with your hand, it is easier to push the threaded ring to rotate and it is less likely to slip.

[0019] Preferably, a circular block is fixedly connected to the top end of the screw, and the sum of the lengths of the circular block and the screw is greater than the height of one end of the L-shaped block.

[0020] The effect achieved by the above components is that by setting the circular block, the threaded ring will not detach from the outer surface of the screw when it moves upward on the outer surface of the screw.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0022] In this utility model, by setting a snap-fit ​​device, the positioning block rotates when one end of the snap-fit ​​block contacts the other end of the positioning block, and the snap-fit ​​block engages with the positioning block without deforming the positioning block. This avoids the positioning block from breaking under stress as much as possible, and the positioning block and snap-fit ​​block can be easily disengaged by pulling the round rod, thus improving the convenience of disassembling and assembling the rear shell and back plate. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0024] Figure 2This is a three-dimensional structural diagram of the back panel of this utility model;

[0025] Figure 3 This is a three-dimensional structural diagram of the rear shell plate of this utility model;

[0026] Figure 4 This utility model Figure 3 A magnified three-dimensional structural diagram of point A;

[0027] Figure 5 This is a three-dimensional structural diagram of the fixing block of this utility model;

[0028] Figure 6 This is a three-dimensional structural diagram of the support rod of this utility model.

[0029] Legend: 1. Rear shell plate; 2. Snap-fit ​​device; 3. Positioning device; 4. Back plate; 5. Snap-fit ​​block; 21. Fixing block; 22. Rotating shaft; 23. Positioning block; 24. Round rod; 25. Spring; 26. Retaining ring; 27. Elliptical groove; 28. Auxiliary groove; 29. ​​Support rod; 210. Washer ring; 31. L-shaped block; 32. Screw; 33. Threaded ring; 34. Circular ring; 35. Pressure block; 36. Protrusion; 37. Round block. Detailed Implementation

[0030] Example 1, as Figure 1-6As shown, an ultra-thin back shell assembly structure includes several locking blocks 5. A back plate 4 for supporting the locking blocks 5 is fixedly connected to one side of each locking block 5. A back shell plate 1 is disposed on one side of the back plate 4. Several locking devices 2 for engaging with the locking blocks 5 are disposed inside the back shell plate 1. The number of locking blocks 5 is the same as the number of locking devices 2. Each locking device 2 includes a fixing block 21. One side of the fixing block 21 is fixedly connected to one side of the back shell plate 1. A rotating shaft 22 is rotatably connected to one side of the fixing block 21. A positioning block 23 is fixedly connected to the outer surface of the rotating shaft 22. A round rod 24 is fixedly connected to the top of the positioning block 23. A spring 25 is provided at the top, and a retaining ring 26 is provided at the top of the spring 25. The inner wall of the retaining ring 26 slides on the outer surface of the round rod 24. The upper and lower ends of the spring 25 are fixedly connected to the bottom end of the retaining ring 26 and the top end of the positioning block 23, respectively. Several elliptical grooves 27 are opened on one side of the top of the rear shell plate 1. The top part of the outer surface of the round rod 24 is located inside the elliptical grooves 27. When the back plate 4 is connected to the rear shell plate 1 by setting a snap-fit ​​device 2, several snap-fit ​​blocks 5 on the inner wall of the back plate 4 are aligned with several positioning blocks 23 inside the rear shell plate 1, pushing the back plate 4 to move towards the rear shell plate 1. When block 5 contacts one end of positioning block 23 on the inner wall of rear shell 1, it pushes positioning block 23 to rotate upward through shaft 22, changing its angle. Simultaneously, the round rod 24 at the top of positioning block 23 moves a distance inside the elliptical groove 27. The retaining ring 26 at the top of spring 25 abuts against the top of the inner wall of rear shell 1, compressing spring 25. When one end of locking block 5 enters behind positioning block 23, the compressed spring 25 returns to its original shape and pushes positioning block 23 and shaft 22 downward, fixing positioning block 23 to one side of locking block 5 and engaging with locking block 5, thus connecting back plate 4 and rear shell 1. When the back plate 4 is separated from the rear shell 1, the round rod 24 is pulled at the elliptical groove 27 to control the positioning block 23 to rotate upward. Then, the back plate 4 is pulled to move away from the rear shell 1 so that the locking block 5 is moved away from the bottom of the positioning block 23 to release the engagement. The positioning block 23 is rotated when one end of the locking block 5 contacts one end of the positioning block 23. The locking block 5 is engaged with the positioning block 23 without deforming the positioning block 23, so as to avoid the positioning block 23 from breaking under stress as much as possible. The locking block 23 is easily released from the locking block 5 by pulling the round rod 24, which improves the convenience of disassembling and assembling the rear shell 1 and the back plate 4.

[0031] Reference Figure 2-6As shown in this embodiment: the top of the round rod 24 has two auxiliary grooves 28, which are located on both sides of the top of the round rod 24. When it is necessary to pull the round rod 24 to control the rotation of the positioning block 23, the round rod 24 can be pinched at the auxiliary grooves 28 on both sides of the top of the round rod 24 to facilitate the control of the round rod 24 to drive the positioning block 23 to rotate. The bottom end of the fixed block 21 is fixedly connected to the support rod 29. The end of the support rod 29 away from the fixed block 21 is located below the positioning block 23. After the locking block 5 is engaged with the positioning block 23, the support rod 29 can support the bottom of the positioning block 23, so as to avoid the problem of unstable engagement caused by the positioning block 23 rotating downward when the locking block 5 moves away from the positioning block 23.

[0032] Reference Figure 2-6 As shown in this embodiment: a washer 210 is fixedly connected to the top of the retaining ring 26. The washer 210 is made of rubber. By setting the rubber washer 210, the top of the elliptical groove 27 and the inner wall of the rear shell plate 1 can be sealed, so as to prevent dust from entering the interior of the rear shell plate 1 through the elliptical groove 27 as much as possible. The inner diameter of the spring 25 is slightly larger than the diameter of the round rod 24. The spring 25 is located outside the round rod 24. When the positioning block 23 rotates and causes the spring 25 to deform, the spring 25 will move outside the round rod 24. The round rod 24 can reinforce the internal shape of the spring 25, so as to prevent the spring 25 from twisting laterally and affecting normal use as much as possible.

[0033] Reference Figure 1-4 As shown in this embodiment: a plurality of positioning devices 3 are provided at the top of the rear shell plate 1. The positioning device 3 includes an L-shaped block 31. The bottom end of the L-shaped block 31 is fixedly connected to the top of the rear shell plate 1. A screw 32 is fixedly connected to the top of the L-shaped block 31. A threaded ring 33 is threadedly connected to the outer surface of the screw 32. A circular ring 34 is rotatably connected to the bottom end of the threaded ring 33. One end of the circular ring 34 slides on one side of the inner wall of the L-shaped block 31. A pressure block 35 is fixedly connected to one end of the circular ring 34. After the rear shell plate 1 is connected to the back plate 4 by means of the snap-fit ​​device 2 and the snap-fit ​​block 5, the threaded ring 33 can be rotated outside each elliptical groove 27 at the top of the rear shell plate 1, so that the threaded ring 33 moves downward on the outer surface of the screw 32, pushing one end of the circular ring 34 to slide downward on the inner wall of the L-shaped rod, driving the pressure block 35 to move downward and pressing one side of the pressure block 35 onto the top of the circular rod 24, so as to avoid the positioning block 23 from rotating accidentally and causing the engagement with the snap-fit ​​block 5 to loosen.

[0034] Reference Figure 2-4As shown in this embodiment: a number of protrusions 36 are fixedly connected to the outer surface of the threaded ring 33. The protrusions 36 are circumferentially distributed on the outer surface of the threaded ring 33. By pressing the protrusions 36 on the outer surface of the threaded ring 33 with your hand, it is easier to push the threaded ring 33 to rotate and it is not easy to slip. A round block 37 is fixedly connected to the top of the screw 32. The length of the round block 37 and the screw 32 is greater than the height of one end of the L-shaped block 31. By setting the round block 37, the threaded ring 33 will not detach from the outer surface of the screw 32 when it moves upward on the outer surface of the screw 32.

[0035] Working principle: When connecting the back plate 4 to the rear shell 1, several locking blocks 5 on the inner wall of the back plate 4 are aligned with several positioning blocks 23 inside the rear shell 1, pushing the back plate 4 towards the rear shell 1. When the locking blocks 5 on the outer surface of the back plate 4 contact one end of the positioning block 23 on the inner wall of the rear shell 1, they will push the positioning block 23 to rotate upward through the rotating shaft 22 to change its angle. At the same time, the round rod 24 at the top of the positioning block 23 will move a certain distance inside the elliptical groove 27. The retaining ring 26 at the top of the spring 25 will abut against the top of the inner wall of the rear shell 1, causing the spring 25 to be compressed. When one end of the locking block 5 enters behind the positioning block 23, the compressed spring 25 will return to its original shape and push the positioning block 23 and the rotating shaft 22 to rotate downward, fixing the positioning block 23 in place. One side of block 5 engages with locking block 5, connecting back plate 4 and rear shell plate 1. Then, rotate threaded ring 33 on the outside of each elliptical groove 27 at the top of rear shell plate 1, causing threaded ring 33 to move downward on the outer surface of screw 32, pushing one end of ring 34 to slide downward on the inner wall of L-shaped rod, causing pressure block 35 to move downward and pressing one side of pressure block 35 onto the top of round rod 24, further restricting the position of positioning block 23. When it is necessary to separate back plate 4 from rear shell plate 1, rotate threaded ring 33 to move ring 34 and pressure block 35 away from the top of elliptical groove 27, pull round rod 24 at elliptical groove 27 to control positioning block 23 to rotate upward, and then pull back plate 4 to move away from rear shell plate 1, causing locking block 5 to move away from the bottom of positioning block 23 to release engagement.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification of the above embodiment based on the technical essence of the present invention that does not deviate from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. An ultra-thin back shell assembly structure, comprising a plurality of locking blocks (5), characterized in that: A back plate (4) for supporting the card block (5) is fixedly connected to one side of the card block (5). A rear shell plate (1) is provided on one side of the back plate (4). A plurality of snap-fit ​​devices (2) for snapping with the card block (5) are provided inside the rear shell plate (1). The number of card blocks (5) is the same as the number of snap-fit ​​devices (2). Each snap-fit ​​device (2) includes a fixing block (21). One side of the fixing block (21) is fixedly connected to one side of the rear shell plate (1). A rotating shaft (22) is rotatably connected to one side of the fixing block (21). The outer surface of the rotating shaft (22) is fixedly connected to... A positioning block (23) is attached, and a round rod (24) is fixedly connected to the top of the positioning block (23). A spring (25) is provided at the top of the positioning block (23), and a retaining ring (26) is provided at the top of the spring (25). The inner wall of the retaining ring (26) slides on the outer surface of the round rod (24). The upper and lower ends of the spring (25) are fixedly connected to the bottom end of the retaining ring (26) and the top of the positioning block (23), respectively. Several elliptical grooves (27) are opened on one side of the top of the rear shell plate (1), and the top part of the outer surface of the round rod (24) is located inside the elliptical grooves (27).

2. The ultra-thin rear shell assembly structure according to claim 1, characterized in that: The top end of the round rod (24) has two auxiliary grooves (28), which are located on both sides of the top end of the round rod (24).

3. The ultra-thin rear shell assembly structure according to claim 2, characterized in that: The bottom end of the fixing block (21) is fixedly connected to a support rod (29), and the end of the support rod (29) away from the fixing block (21) is located below the positioning block (23).

4. The ultra-thin rear shell assembly structure according to claim 3, characterized in that: The top end of the retaining ring (26) is fixedly connected to a washer ring (210), which is made of rubber.

5. The ultra-thin rear shell assembly structure according to claim 4, characterized in that: The inner diameter of the spring (25) is slightly larger than the diameter of the round rod (24), and the spring (25) is located on the outside of the round rod (24).

6. The ultra-thin rear shell assembly structure according to claim 5, characterized in that: The top of the rear shell plate (1) is provided with several positioning devices (3). The positioning device (3) includes an L-shaped block (31). The bottom end of the L-shaped block (31) is fixedly connected to the top end of the rear shell plate (1). The top end of the L-shaped block (31) is fixedly connected to a screw (32). The outer surface of the screw (32) is threadedly connected to a threaded ring (33). The bottom end of the threaded ring (33) is rotatably connected to a ring (34). One end of the ring (34) slides on one side of the inner wall of the L-shaped block (31). One end of the ring (34) is fixedly connected to a pressure block (35).

7. The ultra-thin rear shell assembly structure according to claim 6, characterized in that: The outer surface of the threaded ring (33) is fixedly connected with a number of protrusions (36), which are circumferentially distributed on the outer surface of the threaded ring (33).

8. The ultra-thin rear shell assembly structure according to claim 6, characterized in that: A circular block (37) is fixedly connected to the top of the screw (32), and the length of the circular block (37) and the screw (32) is greater than the height of one end of the L-shaped block (31).

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