Liquid crystal display screen with foldable structure

Abstract

The utility model discloses a liquid crystal display screen with a foldable structure, which relates to the technical field of liquid crystal display screens and comprises a main display screen, a main frame is fixedly mounted outside the main display screen, auxiliary display screens are arranged on two sides of the main frame, auxiliary frames are fixedly mounted outside the auxiliary display screens, and the auxiliary frames are fixedly mounted on two sides of the main frame. The back of the main frame and the back of the auxiliary frame are connected through a rotary limiting mechanism, the display screen is limited at the unfolding and folding positions, positioning blocks are installed on the two sides of the upper end and the lower end in the main frame, positioning grooves are formed in the upper portion and the lower portion of the inner side of the auxiliary frame, and the positioning blocks are matched with the positioning grooves in an inserted mode. A portable lifting handle is arranged above the main frame and connected with the auxiliary display screen when the display screen is in a folded state, and the problem that a folding liquid crystal display screen is prone to loosening in the using process and after being folded is solved.

Description

Technical Field

[0001] This utility model relates to the field of liquid crystal display technology, specifically to a foldable liquid crystal display. Background Technology

[0002] Liquid crystal displays (LCDs) are a type of flat panel display technology that controls the transmission and blocking of light by changing the arrangement of liquid crystal molecules, thereby displaying images. They mainly consist of two parallel glass plates with liquid crystal material sandwiched between them. When an electric current passes through, the liquid crystal molecules change their alignment, allowing light from the backlight to pass through or be blocked as needed, thus forming various images and colors on the screen. LCDs are lightweight, energy-efficient, have low radiation, and produce clear and detailed images. They are widely used in various electronic devices such as televisions, computer monitors, mobile phones, and tablets, and are an important component of modern display technology.

[0003] For example, the Chinese authorized patent CN217030573U, entitled "A Foldable LCD Display Screen," includes a housing with a cover at the top. A movable shaft is installed at one end of the cover, and the movable shaft is rotatably connected to a shaft bracket, which is fixedly connected to the housing. A handle is installed on the other side of the housing. A lower fixing block is located on the side of the housing near the handle, and an upper fixing block is located on the cover near the lower fixing block. Pins are fixedly connected to the outer walls of both sides of the housing and the cover. The pins are fitted with rotatably connected movable sleeves, and the two movable sleeves are connected by a first telescopic rod, on which a fastening bolt is installed. In this invention, by unscrewing the fastening bolt and pushing the upper fixing block upward, the upper magnet separates from the lower magnet, opening the cover. At the same time, the first telescopic rod rotates, exposing the display screen body. The display screen body is then fixed to the cover using extended bolts, nuts, and clamps.

[0004] While the existing technologies mentioned above can achieve folding of LCD screens, their limiting effect is poor, and they are prone to loosening during use and after folding. Therefore, they do not meet current requirements. In response, we propose a foldable LCD screen structure. Utility Model Content

[0005] The purpose of this invention is to provide a foldable liquid crystal display screen to solve the problems mentioned in the background art, such as the tendency of foldable liquid crystal displays to become loose during use and after folding.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a foldable liquid crystal display screen, including a main display screen, a main frame fixedly mounted on the outside of the main display screen, secondary display screens on both sides of the main frame, and a secondary frame fixedly mounted on the outside of the secondary display screens. The back of the main frame and the secondary frame are connected by a rotation limiting mechanism to limit the display screens in the open and folded positions. Positioning blocks are installed on both sides of the upper and lower ends inside the main frame, and positioning grooves are provided on the upper and lower sides of the inner side of the secondary frame, with the positioning blocks and positioning grooves interlocking. A portable handle is provided on the top of the main frame to connect with the secondary display screens in the folded state.

[0007] Preferably, the rotation limiting mechanism includes a fixed shaft and a movable shaft. The mounting plate of the fixed shaft is fixed at the middle position on both sides of the back of the main frame, and the mounting plate of the movable shaft is fixed at the top and bottom of one side of the back of the sub-frame. One end of the movable shaft extends into the interior of the fixed shaft, and the movable shaft and the fixed shaft are rotatably engaged.

[0008] Preferably, limit blocks are installed at both the top and bottom of the fixed shaft, and protrusions are integrally formed on both sides of the limit blocks. The limit blocks and protrusions slide and limit the movement of the inner cavity of the fixed shaft. Limit slots are provided at one end of the movable shaft near the fixed shaft, and the limit blocks and protrusions are inserted into the limit slots. A return spring is fixedly installed between the inner cavity of the fixed shaft and the limit blocks.

[0009] Preferably, the front end of the fixed shaft is provided with movable grooves at both the top and bottom, and a lever is slidably installed inside each movable groove, and the lever is welded and fixed to the back of the limiting block.

[0010] Preferably, guide grooves are provided on both the upper and lower sides of the front end of the main frame, and an adjustment block is slidably installed inside the guide groove, with one end of the adjustment block fixed to the positioning block.

[0011] Preferably, the portable handle includes two connecting straps, with wheels installed at the front and rear of the bottom of each connecting strap. The wheels are connected to the connecting straps via bearings. A stud is fixedly provided at the bottom of each wheel. Threaded holes are provided on the upper surfaces of both the main frame and the sub-frame, and the threaded holes are adapted to the studs.

[0012] Preferably, a carrying strap is fixedly provided at the upper end between the connecting straps.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This utility model features a rotation limiting mechanism, consisting of a fixed shaft and a movable shaft. The fixed shaft is mounted on the main frame, and the movable shaft is mounted on the secondary frame. The rotation of the fixed and movable shafts enables the folding of the main and secondary displays. Simultaneously, a sliding limiting block is installed inside the fixed shaft. When the secondary display needs to be folded or unfolded, the user squeezes two levers, causing the limiting block to extend inwards towards the fixed shaft. This separates the protrusion on the fixed shaft from the limiting slot on the movable shaft, allowing the movable shaft to rotate freely. During the rotation of the secondary display, the user can release the levers. When the secondary display rotates to the set position, the limiting groove aligns with the protrusion. At this point, under the action of the return spring, the limiting block automatically extends into the limiting slot, forming a limiting lock between the fixed and movable shafts, ensuring the stability of the main and secondary displays after adjustment.

[0015] 2. This utility model has a positioning mechanism. When the two sub-displays are fully unfolded, the rotation limiting mechanism first limits the sub-displays. At this time, the positioning block of the main frame corresponds to the positioning groove of the sub-frame. Then, the user presses the positioning block and pulls the adjusting block from the inside to the outside, so that the positioning block extends into the inside of the positioning groove, forming support for the sub-displays and further improving the stability and firmness of the display after it is unfolded.

[0016] 3. This utility model features a portable handle with studs at the bottom of the rotating wheel that can connect to the threaded holes on the main frame and sub-frame. After the LCD screen is folded, the four studs are fixed to the main frame and sub-frame, and the portable handle is installed. The user can then move the screen simply by lifting the handle, further improving convenience. Attached Figure Description

[0017] Figure 1 This is a front perspective view of the present invention;

[0018] Figure 2 This is a rear-view perspective view of the present invention;

[0019] Figure 3 This is a top view of the connection structure between the main frame and the sub-frame of this utility model;

[0020] Figure 4 This is a rear view of the connection structure between the main frame and the sub-frame of this utility model;

[0021] Figure 5 For the present utility model Figure 2 Enlarged view of a portion of region A in the middle.

[0022] In the diagram: 1. Main display screen; 2. Main frame; 3. Secondary display screen; 4. Secondary frame; 5. Rotation limit mechanism; 6. Guide groove; 7. Adjusting block; 8. Positioning block; 9. Positioning groove; 10. Portable handle; 11. Threaded hole; 12. Fixed shaft; 13. Movable shaft; 14. Movable groove; 15. Toggle block; 16. Limiting insert block; 17. Protrusion; 18. Limiting slot; 19. Return spring; 20. Connecting strap; 21. Rotary wheel; 22. Stud; 23. Lifting strap. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] Please see Figure 1-5 This utility model provides an embodiment of a foldable liquid crystal display screen, including a main display screen 1, a main frame 2 fixedly mounted on the outside of the main display screen 1, secondary display screens 3 on both sides of the main frame 2, and secondary frames 4 fixedly mounted on the outside of the secondary display screens 3. The back of the main frame 2 and the secondary frames 4 are connected by a rotation limiting mechanism 5, which limits the display screen in the open and folded positions. The rotation limiting mechanism 5 includes a fixed shaft 12 and a movable shaft 13. The mounting plate of the fixed shaft 12 is fixed at the middle position of both sides of the back of the main frame 2, and the mounting plate of the movable shaft 13 is fixed to the secondary frames. On the upper and lower sides of the back of the frame 4, one end of the movable shaft 13 extends into the interior of the fixed shaft 12, and the movable shaft 13 and the fixed shaft 12 are rotatably engaged. Limiting blocks 16 are installed on the upper and lower sides of the interior of the fixed shaft 12. Both sides of the limiting blocks 16 are integrally formed with protrusions 17, and the limiting blocks 16 and protrusions 17 slide and limit the inner cavity of the fixed shaft 12. The movable shaft 13 is provided with a limiting slot 18 at one end near the fixed shaft 12, and the limiting blocks 16 and protrusions 17 are inserted into the limiting slot 18. A return spring 19 is fixedly installed between the inner cavity of the fixed shaft 12 and the limiting blocks 16.

[0025] When folding or unfolding the secondary display screen 3, the user squeezes the two levers 15 respectively, causing the limiting insert 16 to extend into the fixed shaft 12, thereby separating the protrusion 17 on the fixed shaft 12 from the limiting slot 18 on the movable shaft 13. The movable shaft 13, no longer limited, can rotate freely. During the rotation of the secondary display screen 3, the user can release the levers 15. When the secondary display screen 3 rotates to the set position, the positions of the limiting slot 18 and the protrusion 17 correspond. At this time, under the action of the return spring 19, the limiting insert 16 automatically extends into the limiting slot 18, forming a limiting lock between the fixed shaft 12 and the movable shaft 13, ensuring the stability of the main display screen 1 and the secondary display screen 3 after adjustment.

[0026] Please see Figure 1 The main frame 2 has positioning blocks 8 installed on both sides of the upper and lower ends inside. The sub-frame 4 has positioning grooves 9 on both the upper and lower sides inside. The positioning blocks 8 and positioning grooves 9 are inserted into each other. The fixed shaft 12 has movable grooves 14 on both the upper and lower ends at the front end. The movable grooves 14 have sliding blocks 15 installed inside. The blocks 15 are welded to the back of the limit block 16. The main frame 2 has guide grooves 6 on both the upper and lower ends at the front end. The guide grooves 6 have adjusting blocks 7 installed inside. One end of the adjusting block 7 is fixed to the positioning block 8.

[0027] When the two secondary displays 3 are fully unfolded, the rotation limiting mechanism 5 first limits the secondary displays 3. At this time, the positioning block of the main frame 2 corresponds to the positioning groove 9 of the secondary frame 4. Then, the user presses the adjustment block 7 and pulls the adjustment block 7 from the inside to the outside, so that the positioning block 8 extends into the interior of the positioning groove 9, forming a support for the secondary displays 3, further improving the stability and firmness of the displays after unfolding.

[0028] Please see Figure 2 and Figure 5 A portable handle 10 is provided on the top of the main frame 2. When the display screen is folded, it connects to the secondary display screen 3. The portable handle 10 includes two connecting straps 20. The bottom of the connecting straps 20 is equipped with a wheel 21 at both the front and back. The wheel 21 is connected to the connecting strap 20 through a bearing. The bottom of the wheel 21 is fixedly provided with a stud 22. The upper end face of the main frame 2 and the secondary frame 4 is provided with a threaded hole 11, and the threaded hole 11 is adapted to the stud 22. The upper end of the connecting straps 20 is fixedly provided with a carrying strap 23. After the LCD display screen is folded, the four studs 22 are fixed on the main frame 2 and the secondary frame 4 to install the portable handle 10. Then, the user only needs to lift the carrying strap 23 to move the display screen, which further improves the convenience.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A liquid crystal display screen of foldable construction comprising a main display screen (1) characterised in that: The main display screen (1) is fixedly mounted on the outside of a main frame (2). A secondary display screen (3) is provided on both sides of the main frame (2). A secondary frame (4) is fixedly mounted on the outside of the secondary display screen (3). The back of the main frame (2) and the secondary frame (4) are connected by a rotation limiting mechanism (5) to limit the display screen when it is open or folded. Positioning blocks (8) are installed on both sides of the upper and lower ends inside the main frame (2). Positioning grooves (9) are provided on the upper and lower sides of the inner side of the secondary frame (4). The positioning blocks (8) and the positioning grooves (9) are inserted and matched. A portable handle (10) is provided on the top of the main frame (2) to connect with the secondary display screen (3) when the display screen is folded.

2. The foldable liquid crystal display panel of claim 1, wherein: The rotation limiting mechanism (5) includes a fixed shaft (12) and a movable shaft (13). The mounting plate of the fixed shaft (12) is fixed in the middle position on both sides of the back of the main frame (2). The mounting plate of the movable shaft (13) is fixed on the upper and lower sides of one side of the back of the sub-frame (4). One end of the movable shaft (13) extends into the interior of the fixed shaft (12), and the movable shaft (13) and the fixed shaft (12) are rotatably engaged.

3. The foldable liquid crystal display panel of claim 2, wherein: Limiting blocks (16) are installed at both the top and bottom inside the fixed shaft (12). Both sides of the limiting blocks (16) are integrally formed with protrusions (17), and the limiting blocks (16) and protrusions (17) slide and limit the movement of the fixed shaft (12). The movable shaft (13) is provided with a limiting slot (18) at one end near the fixed shaft (12), and the limiting blocks (16) and protrusions (17) are inserted into the limiting slots (18). A return spring (19) is fixedly installed between the inner cavity of the fixed shaft (12) and the limiting blocks (16).

4. The foldable liquid crystal display panel of claim 3, wherein: The fixed shaft (12) has movable grooves (14) at both the top and bottom of its front end. Each movable groove (14) has a sliding block (15) installed inside it. The block (15) is welded and fixed to the back of the limiting block (16).

5. A foldable liquid crystal display screen according to claim 1, characterized in that: The main frame (2) has guide grooves (6) on both the upper and lower sides of the front end. An adjustment block (7) is slidably installed inside the guide groove (6), and one end of the adjustment block (7) is fixed to the positioning block (8).

6. The foldable liquid crystal display panel of claim 1, wherein: The portable handle (10) includes two connecting straps (20). The bottom of each connecting strap (20) is equipped with a wheel (21) at both the front and back. The wheel (21) is connected to the connecting strap (20) by a bearing. The bottom of the wheel (21) is fixedly provided with a stud (22). The upper end face of the main frame (2) and the sub-frame (4) is provided with a threaded hole (11), and the threaded hole (11) is adapted to the stud (22).

7. The foldable liquid crystal display panel of claim 6, wherein: A carrying strap (23) is fixedly provided at the upper end between the connecting straps (20).

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