A wireless projection display screen

Abstract

This utility model discloses a wireless screen projection display screen, including a display screen body and an expansion box fixed to the back of the display screen body. A storage slot is provided on one side wall of the expansion box, and a rotating base component is provided at one end of the storage slot, located inside the expansion box. A rotating fastener is rotatably mounted inside the rotating base component, and a rotating shaft is connected to the rotating fastener by screws. In this utility model, the bracket plate can be completely embedded into the storage slot of the expansion box, with no protrusion when retracted, occupying no extra space, and preventing the bracket from scratching foreign objects. Its portability is significantly better than existing external or semi-retractable brackets. The functional interface on the top of the expansion box allows for wired connection of devices such as keyboards, USB flash drives, and monitors, expanding the application scenarios of this utility model and solving the problem of the single function of existing brackets. The spring structure assists the rotating fastener in rotating and elastically locking, which is not affected by wear during locking, extending its service life.

Description

Technical Field

[0001] This utility model relates to the field of wireless screen projection, specifically a display screen for wireless screen projection. Background Technology

[0002] With the widespread adoption of smart devices and the growing demand for multi-screen interaction, wireless projection displays, as core devices for enabling cross-device content sharing, are widely used in scenarios such as office meetings, education and training, and home entertainment. Wireless projection displays are mainly divided into two categories: one is fixed-installation displays (such as large conference screens), which, while offering stable display effects, rely on wired power and cannot be moved, resulting in poor flexibility and difficulty in adapting to temporary projection needs; the other is portable wireless projection displays, which solve the mobility problem but generally suffer from the following drawbacks:

[0003] Poor storage: The stand is quite bulky when unfolded, and it cannot fit completely against the back of the tablet when stored, making it easy to scratch foreign objects or take up extra space.

[0004] Insufficient support stability: The rotating parts of the bracket lack damping structure, making it prone to shifting due to slight collisions after angle adjustment. Furthermore, the lack of angle limit design means that excessive rotation can easily damage components.

[0005] Limited functionality: It only has supporting functions and cannot meet the expansion needs of wireless screen projection external devices (such as keyboards, USB flash drives, and chargers);

[0006] Insufficient anti-slip and protection: The parts of the stand that come into contact with the desktop are mostly made of hard material, which is easy to slip and may scratch the desktop. At the same time, there is no protective structure when the stand is folded up, which can easily wear down the back of the tablet.

[0007] Therefore, those skilled in the art have provided a wireless projection display to solve the problems mentioned in the background art. Utility Model Content

[0008] The purpose of this invention is to provide a wireless projection display screen to solve the problems mentioned in the background art.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A wireless projection display screen includes a display screen body and an expansion box fixed to the back of the display screen body. A storage groove is provided on one side wall of the expansion box. A rotating base component is provided at one end of the storage groove and placed inside the expansion box. A rotating fastener is rotatably provided inside the rotating base component. A rotating shaft is connected to the rotating fastener by screws. A rotating kit is rotatably provided around the rotating shaft. An L-shaped bracket plate is connected to one side of the rotating kit by screws. An anti-slip rubber component is covered at the other end of the bracket plate. The bracket plate is completely embedded in the storage groove, and the outer surface of the anti-slip rubber component is flush with the outer wall of the expansion box.

[0011] As a further embodiment of this utility model: the expansion box has an integrally formed spring mounting groove on one side of the rotating fastener, a spring is installed inside the spring mounting groove, and a retaining bead is provided between the other end of the spring and the rotating fastener.

[0012] As a further embodiment of this utility model: a rubber sleeve for providing rotational damping force is provided between the outer periphery of the rotating shaft and the rotating assembly, and the rubber sleeve is fixedly fitted to the rotating shaft.

[0013] As a further improvement of this utility model: a limiting post is fixedly connected to one side of the outer wall of the rotating shaft, and a limiting groove is provided at one end of the rotating assembly to cooperate with the limiting post. The limiting groove is arc-shaped and corresponds to a rotation angle range of 0°-120° for the support plate.

[0014] As a further improvement of this utility model: the top of the expansion box is provided with an expansion function interface, which is electrically connected to the internal circuit of the display screen body. The expansion function interface is selected from at least two of the following: USB Type-C interface, USB-A interface, and HDMI interface.

[0015] As a further improvement of this utility model: the surface of the anti-slip rubber part is integrally formed with anti-slip texture, and the anti-slip rubber part is made of nitrile rubber or silicone rubber.

[0016] As a further improvement of this utility model: the rotating base component has a hollow cavity structure, and the rotating base component and the expansion box are fixed by snap-fit ​​or integrally formed.

[0017] As a further improvement of this utility model: the spring is a cylindrical compression spring, and the spring force when the spring is in the installed state is 3-5N.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] In this invention, the support plate can be completely embedded into the storage slot of the expansion box. When folded up, there is no protrusion, which does not occupy extra space and prevents the support from scratching foreign objects. Its portability is significantly better than existing external or semi-retractable supports. The damping force provided by the rubber sleeve allows the support plate to be stably supported at any angle from 0° to 120°. The limiting post and limiting groove cooperate to prevent excessive rotation and damage to the components, solving the problems of easy displacement and damage of existing supports. The anti-slip rubber part at the end of the support plate increases the friction with the desktop to prevent the tablet from slipping and prevents the hard support from scratching the desktop. At the same time, it can protect the contact part between the support plate and the expansion box when folded up. The functional interface on the top of the expansion box can connect to devices such as keyboards, USB flash drives, and monitors via wired connection, expanding the application scenarios of this invention and solving the defects of the single function of existing supports. The spring structure assists the rotating fastener to rotate and lock elastically, which is not affected by wear when locking and extends the service life. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a structural diagram of the support plate after it has been unfolded in this utility model;

[0022] Figure 3 For the explosion of this utility model Figure 1 ;

[0023] Figure 4 For the explosion of this utility model Figure 2 ;

[0024] Figure 5 This utility model Figure 3 A magnified view of a section at point A in the middle;

[0025] Figure 6 This is a cross-sectional view of the spring portion in this utility model.

[0026] In the diagram: 1. Display screen body; 2. Expansion box; 201. Expansion function interface; 202. Storage slot; 3. Bracket plate; 4. Anti-slip rubber parts; 5. Rotating fastener; 6. Rotating base parts; 7. Rotating shaft; 701. Limiting post; 8. Rotating kit; 801. Limiting groove; 9. Spring; 10. Clamping ball; 11. Spring mounting slot. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-6 In this embodiment of the present invention, a wireless projection display screen includes a display screen body 1 and an expansion box 2 fixed to the back of the display screen body 1. A storage groove 202 is provided on one side wall of the expansion box 2. A rotating base 6 is provided at one end of the storage groove 202 and placed inside the expansion box 2. A rotating fastener 5 is rotatably provided inside the rotating base 6. A rotating shaft 7 is connected to the rotating fastener 5 by screws. A rotating kit 8 is rotatably provided around the rotating shaft 7. An L-shaped bracket plate 3 is connected to one side of the rotating kit 8 by screws. An anti-slip rubber part 4 is covered at the other end of the bracket plate 3. The bracket plate 3 is completely embedded in the storage groove 202, and the outer surface of the anti-slip rubber part 4 is flush with the outer wall of the expansion box 2.

[0029] The expansion box 2 has an integrally formed spring mounting groove 11 on one side of the rotating fastener 5. A spring 9 is installed inside the spring mounting groove 11. A retaining bead 10 is clamped between the other end of the spring 9 and the rotating fastener 5. The spring 9 can provide elastic force to the retaining bead 10, so that it is tightly attached to the rotating fastener 5. This ensures that the rotating fastener 5 provides support when it rotates around the rotating base 6, so that it can maintain a stable angular position when it is not under force or under a small force.

[0030] Among them, a rubber sleeve for providing rotational damping force is provided between the outer periphery of the rotating shaft 7 and the rotating kit 8. The rubber sleeve is fixed to the rotating shaft 7. The damping force provided by the rubber sleeve enables the support plate 3 to be stably supported at any angle from 0° to 120°.

[0031] Among them, a limiting post 701 is fixedly connected to one side of the outer wall of the rotating shaft 7, and a limiting groove 801 that cooperates with the limiting post 701 is opened at one end of the rotating assembly 8. The limiting groove 801 is arc-shaped, and the rotation angle range of the corresponding support plate 3 is 0°-120°. The limiting post 701 slides in the limiting groove 801 to prevent excessive rotation.

[0032] The expansion box 2 has an expansion function interface 201 on its top. The expansion function interface 201 is electrically connected to the internal circuit of the display body 1. The expansion function interface 201 is selected from at least two of the following: USB Type-C interface, USB-A interface, and HDMI interface. The tablet can be charged by connecting a charger through the USB Type-C interface on the top of the expansion box 2, or the video can be output to a monitor through the HDMI interface, meeting the needs of multiple usage scenarios.

[0033] Among them, the surface of the anti-slip rubber part 4 is integrally formed with anti-slip texture, and the anti-slip rubber part 4 is made of nitrile rubber or silicone rubber. The rotating base part 6 has a hollow cavity structure, and the rotating base part 6 and the expansion box 2 are fixed by buckles or integrally formed.

[0034] Among them, spring 9 is a cylindrical compression spring 9, and the elastic force of spring 9 when it is in the installed state is 3-5N.

[0035] The working principle of this utility model is as follows:

[0036] Stand Deployment: Manually pull the end of the stand plate 3 outwards. The stand plate 3 drives the rotating assembly 8 to rotate around the rotating shaft 7. At the same time, the rotating fastener 5 can be rotated along the rotating base 6 to realize the rotational adjustment of the support position of the stand plate 3, thereby satisfying the support adjustment for the wireless projection to be placed flat or vertically. When rotating around the rotating base 6, the spring 9 can provide support force, so that it can maintain a stable angle position when there is no force or the force is small. When the stand plate 3 presses against the rotating shaft 7 and rotates to the required angle, such as 60° for office use and 120° for watching movies, the damping force provided by the rubber sleeve keeps the stand plate 3 stable. The limiting post 701 slides in the limiting groove 801 to prevent excessive rotation.

[0037] To fold up the bracket: First, rotate the rotating fastener 5 so that the bracket plate 3 corresponds to the storage slot 202. Then, gently push the bracket plate 3 so that it gradually embeds into the storage slot 202 until the outer surface of the anti-slip rubber part 4 is flush with the outer wall of the expansion box 2, thus completing the folding.

[0038] Extended functionality: Connect the charger to charge the tablet via the USB Type-C port on the top of the expansion box 2, or connect the monitor via the HDMI port to output video. It can achieve both wireless and wired screen mirroring, meeting the needs of multiple usage scenarios.

[0039] In this stand, the support plate 3 can be completely embedded in the storage slot 202 of the expansion box 2. When folded up, there is no protrusion, which does not occupy extra space and prevents the stand from scratching foreign objects. Its portability is significantly better than existing external or semi-retractable stands. The damping force provided by the rubber sleeve allows the support plate 3 to be stably supported at any angle from 0° to 120°. The limiting post 701 and the limiting slot 801 cooperate to prevent excessive rotation and damage to the components, solving the problems of easy displacement and damage of existing stands. The anti-slip rubber part 4 at the end of the support plate 3 increases the friction with the desktop to prevent the tablet from slipping and also prevents the hard stand from scratching the desktop. At the same time, it can protect the contact part between the support plate 3 and the expansion box 2 when folded up. The functional interface on the top of the expansion box 2 can be connected to external devices such as keyboards, USB flash drives, and monitors to expand the application scenarios of wireless screen projection and solve the shortcomings of the single function of existing stands. The spring 9 structure assists the rotating fastener 5 to rotate and lock elastically. The locking is not affected by wear and extends the service life.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A wireless projection display screen, comprising a display screen body (1) and an expansion box (2) fixed on the back of the display screen body (1), characterized in that: The expansion box (2) has a storage slot (202) on one side wall. A rotating base (6) is provided at one end of the storage slot (202) and placed inside the expansion box (2). A rotating fastener (5) is rotatably provided inside the rotating base (6). A rotating shaft (7) is connected to the rotating fastener (5) by screws. A rotating kit (8) is rotatably provided around the rotating shaft (7). An L-shaped support plate (3) is connected to one side of the rotating kit (8) by screws. An anti-slip rubber part (4) is covered at the other end of the support plate (3). The support plate (3) is completely embedded in the storage slot (202), and the outer surface of the anti-slip rubber part (4) is flush with the outer wall of the expansion box (2).

2. The display screen of wireless projection according to claim 1, wherein: The expansion box (2) has an integrally formed spring mounting groove (11) on one side of the rotating fastener (5). A spring (9) is installed inside the spring mounting groove (11). A retaining bead (10) is clamped between the other end of the spring (9) and the rotating fastener (5).

3. The display screen of claim 1, wherein: A rubber sleeve for providing rotational damping force is provided between the outer periphery of the rotating shaft (7) and the rotating kit (8), and the rubber sleeve is sleeved and fixed to the rotating shaft (7).

4. The display screen for wireless projection according to claim 1, characterized in that: A limiting post (701) is fixedly connected to one side of the outer wall of the rotating shaft (7). A limiting groove (801) that cooperates with the limiting post (701) is provided at one end of the rotating assembly (8). The limiting groove (801) is arc-shaped and corresponds to a rotation angle range of 0°-120° for the support plate (3).

5. The display screen of wireless projection according to claim 1, wherein: The expansion box (2) is provided with an expansion function interface (201) on its top. The expansion function interface (201) is electrically connected to the internal circuit of the display body (1). The expansion function interface (201) is selected from at least two of the following: USB Type-C interface, USB-A interface, and HDMI interface.

6. The display screen of wireless projection according to claim 1, wherein: The surface of the anti-slip rubber part (4) is integrally formed with anti-slip texture.

7. The display screen for wireless projection according to claim 1, characterized in that: The rotating base component (6) has a hollow cavity structure, and the rotating base component (6) and the expansion box (2) are fixed by snap fasteners or integrally formed.

8. A display screen for wireless projection according to claim 2, characterized in that: The spring (9) is a cylindrical compression spring (9).

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