An educational presentation display device

Abstract

This utility model relates to the field of educational presentations, and more particularly to a display device for educational presentations. It includes multiple display panels, a first connecting block, a second connecting block, a positioning rod, a mounting frame, an adjusting frame, and a positioning bolt. The first and second connecting blocks are respectively fixed to the mating sides of two adjacent display panels. A mounting frame is mounted on the second connecting block, and an adjusting frame is rotatably connected to the mounting frame. First positioning holes are arrayed on the arc-shaped outer wall of the mounting frame near the adjusting frame. A second positioning hole is provided on the adjusting frame. The positioning bolt can pass through the second positioning hole on the adjusting frame and then be inserted into any of the first positioning holes on the mounting frame, thereby locking the relative angle between the second and first connecting blocks. By inserting the positioning bolt through the second positioning hole and into the first positioning hole, the relative angle between the first and second connecting frames is locked, fixing the angle of the display panels and achieving a secure lock on the display panels in all states, thus enhancing overall stability.

Description

Technical Field

[0001] This utility model relates to the field of educational presentations, and in particular to a display device for educational presentations that is flexibly adjustable, easy to store and transport. Background Technology

[0002] Display boards are often used in educational presentations, conferences, and other activities to display posters, charts, and other materials.

[0003] Currently, to balance display area and portability, a folding structure consisting of multiple display panels connected by hinges is commonly used. However, this type of device has significant drawbacks in practical use: the display angle is limited and cannot be flexibly adjusted according to the venue and the audience's perspective; the display area is fixed and cannot adapt to different amounts of display content; the size remains large even when folded, making transportation and storage inconvenient; and the structure is unstable, especially prone to wobbling after adjusting the angle. Therefore, a more comprehensive and user-friendly display device is needed.

[0004] Therefore, there is an urgent need for an educational presentation display device that is structurally stable, has an adjustable display angle and area, and is easy to store. Utility Model Content

[0005] In order to overcome the shortcomings of existing foldable educational presentation devices, such as stable structure, adjustable display angle and area, and easy storage, this utility model provides an educational presentation device that is stable when unfolded, has an adjustable display angle and area, and is easy to store.

[0006] An educational presentation display device includes multiple display panels, a first connecting block, a second connecting block, a positioning rod, a mounting frame, an adjusting frame, and a positioning bolt. The first connecting block and the second connecting block are respectively fixed to the mating sides of two adjacent display panels. The first connecting block and the second connecting block are rotatably connected. A mounting frame is provided on the second connecting block, and an adjusting frame is rotatably connected to the mounting frame. A sliding groove is provided on the side of the adjusting frame away from the mounting frame. A positioning rod is fixedly provided on the first connecting block, passing through the sliding groove and slidingly engaging with the sliding groove. A first positioning hole is arrayed on the arc-shaped outer wall of the mounting frame near the adjusting frame. A second positioning hole is provided on the adjusting frame. The positioning bolt can pass through the second positioning hole on the adjusting frame and be inserted into any of the first positioning holes of the mounting frame, thereby locking the relative angle between the second connecting block and the first connecting block.

[0007] Furthermore, it is particularly preferred that the mounting frame includes a positioning block, a first fixing post and a second fixing post, the first fixing post and the second fixing post are arranged parallel to each other at the bottom of the positioning block, the positioning block, the first fixing post and the second fixing post form a "U" shaped structure, the top of the second connecting block is provided with a first mounting hole and a second mounting hole parallel to each other and spaced apart, the first fixing post and the second fixing post are respectively inserted into the first mounting hole and the second mounting hole, and the second fixing post passes through the adjusting frame and rotates with it.

[0008] Furthermore, it is particularly preferred that the display panel also includes a support frame, an extension frame, elastic retaining beads, and a stretching frame. The support frame can be installed at the bottom of the display panel, and the extension frame is slidably installed on the support frame. The extension frame can be slid down and pulled out to expand the display height. The support frame has first retaining slots symmetrically opened on both sides, and the extension frame has multiple second retaining slots evenly opened from top to bottom on both sides. Elastic retaining beads are installed in the first retaining slots. When the first retaining slots and the second retaining slots are aligned, the elastic retaining beads can be locked into the second retaining slots under the action of their own springs, thereby positioning the extension frame to be pulled out. The extension frame is slidably connected to the bottom sides of both sides.

[0009] Furthermore, it is particularly preferred that both the first connecting block and the second connecting block have mating holes on both sides, and screws are screwed into the pre-drilled mating holes on both sides of the first connecting block and the second connecting block to clamp and fix them to the display panel.

[0010] Furthermore, it is particularly preferred that the first connecting block has a threaded hole, the lower part of the positioning rod has a thread, the positioning rod is threadedly engaged with the threaded hole, and the upper part of the positioning rod has a screw head.

[0011] In addition, it is particularly preferred that the display panel also includes a tray, which is hinged to the front side of the display panel and can be unfolded downwards.

[0012] In addition, it is particularly preferred that a magnet is included, with a magnet provided on the front side of the display panel.

[0013] In addition, it is particularly preferred that the display panel also includes a hook, with a hook provided on the upper front side.

[0014] The beneficial effects of this utility model are: 1. This utility model uses a positioning bolt that can be detachably passed through the second positioning hole of the adjustment frame and inserted into the first positioning hole of the mounting frame, thereby locking the relative angle between the first connecting frame and the second connecting frame, thus fixing the angle of the display board, realizing the firm locking of each display board in different states, and enhancing the overall stability.

[0015] 2. The first connecting block has a threaded hole, and the lower part of the positioning rod has a thread. The positioning rod mates with the threaded hole on the first connecting block, and the upper part of the positioning rod has a screw head. When it is necessary to temporarily fix the angle between the display panels, rotate the screw head so that the positioning rod and the screw head move downwards together until the screw head tightly fits the adjusting frame with the first connecting block. This restricts the rotation of the adjusting frame, realizing the function of quickly fixing the angle between the display panels, and the angle is continuous.

[0016] 3. This utility model utilizes the magnetic area embedded in the front of the display board to magnetically attract and display charts, teaching models, and other content, allowing for flexible replacement. The hook structure on the display board allows for the hanging of posters or signs with lanyards, facilitating the display of supplementary information and enhancing the intuitiveness and interactivity of the presentation. The sliding tray structure inside the front of the display board allows for convenient storage and retrieval of markers, small writing instruments, or notepads, effectively improving operational convenience during presentations. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0018] Figure 2 This is a three-dimensional structural diagram of the display board, support frame, and extension frame of this utility model.

[0019] Figure 3 This is a three-dimensional structural diagram of the first connecting block and hinge components of this utility model.

[0020] Figure 4 This is a three-dimensional structural diagram of the mounting bracket, adjusting bracket, and positioning bolts of this utility model.

[0021] Figure 5 This is a three-dimensional structural diagram of the elastic positioning rod and screw head and other components of this utility model.

[0022] Figure 6 This is a three-dimensional structural diagram of the elastic ball and tension frame components of this utility model.

[0023] The markings in the diagram are as follows: 1-Display board, 2-First connecting block, 201-Threaded hole, 3-Hinge, 4-Second connecting block, 401-First mounting hole, 402-Second mounting hole, 5-Positioning rod, 501-Screw head, 6-Mounting bracket, 601-First fixing post, 602-Second fixing post, 603-Positioning block, 7-First positioning hole, 701-Second positioning hole, 8-Adjusting bracket, 9-Positioning bolt, 10-Support bracket, 1001-First slot, 11-Extension bracket, 1101-Second slot, 12-Elastic bead, 13-Tension bracket, 14-Panel, 15-Magnet, 16-Hook. Detailed Implementation

[0024] The preferred technical solution of this utility model will be described in detail below with reference to the accompanying drawings. Example 1

[0025] An educational presentation display device, such as Figure 1 , Figure 3 and Figure 4 As shown, the system includes multiple display panels 1, a first connecting block 2, a hinge 3, a second connecting block 4, a positioning rod 5, a mounting bracket 6, a first fixing post 601, a second fixing post 602, an adjusting bracket 8, and a positioning bolt 9. Multiple display panels 1 are arranged horizontally in sequence. The first connecting block 2 and the second connecting block 4 are respectively engaged on the mating sides of adjacent display panels 1. Both the first connecting block 2 and the second connecting block 4 have U-shaped grooves, which engage with the edges of the display panels 1. The first connecting block 2 and the second connecting block 4 have mating holes on their longitudinal sides. Screws are screwed into these pre-drilled holes and abut against the display panels 1, thereby securing the first connecting block 2 and the second connecting block 4 to the display panels 1. The first connecting block 2 and the second connecting block 4 are rotatably connected by the hinge 3. The first connecting block 2 and the second connecting block 4 are rotatably connected to achieve horizontal end-to-end hinge of multiple display panels 1, thereby enabling overall unfolding or folding and adjusting the overall width. The second connecting block 4 is provided with a mounting frame 6, and an adjusting frame 8 is rotatably connected to the mounting frame 6. The adjusting frame 8 is a V-shaped arc metal frame with a bending angle of 120°-150°. A sliding groove is opened on the side of the adjusting frame 8 away from the mounting frame 6. A positioning rod 5 is fixedly installed on the first connecting block 2. The positioning rod 5 passes through the sliding groove and slides with the sliding groove. The arc-shaped outer wall of the mounting frame 6 near the adjusting frame 8 is provided with an array of first positioning holes 7. A second positioning hole 701 is opened on the adjusting frame 8. The positioning bolt 9 can be detachably passed through the second positioning hole 701 on the adjusting frame 8 and inserted into any of the first positioning holes 7 on the mounting frame 6, thereby locking the relative angle between the second connecting block 4 and the first connecting block 2. When adjusting the relative angle between adjacent display panels 1, the second connecting block 4 and the first connecting block 2 are rotated around the axis of the hinge 3 to adjust the relative angle between the two adjacent display panels 1. The adjusting frame 8 rotates accordingly, and the positioning rod 5 slides in its groove. After rotating to the preset angle, the positioning bolt 9 is inserted into the currently aligned first positioning hole 7 and second positioning hole 701. At this time, the relative angle between the two adjacent display panels 1 is rigidly locked by the stable triangular support structure formed by the adjusting frame 8, the positioning rod 5, the second connecting block 4 and the first connecting block 2.

[0026] Mounting bracket 6 includes a positioning block 603, a first fixing post 601, and a second fixing post 602. The first fixing post 601 and the second fixing post 602 are arranged parallel to each other at the bottom of the positioning block 603, forming a "U"-shaped structure. The right side of the positioning block 603 has a cylindrical structure, and a first positioning hole 7 is opened in its circumference. The top of the second connecting block 4 has a first mounting hole 401 and a second mounting hole 402 arranged parallel to each other and spaced apart. The first fixing post 601 and the second fixing post 602 are respectively inserted into the first mounting hole 401 and the second mounting hole 402, and the first fixing post 601 and the second fixing post 602 are interference fit with the first mounting hole 401 and the second mounting hole 402. The end of the adjusting bracket 8 away from the slide groove opened thereon has a set hole, which is fitted onto the second fixing post 602 and can rotate around it.

[0027] First, snap the first connecting block 2 and the second connecting block 4 onto the upper and lower sides of the display panel 1, and then screw them into the pre-drilled mating holes on both sides of the first connecting block 2 and the second connecting block 4 to fix them to the display panel 1. Initially, the multiple display panels 1 are clustered together. At this time, the positioning bolt 9 passes through the second positioning hole 701 and is inserted into the first positioning hole 7. When display panel 1 is needed, the positioning bolt 9 is pulled out from the first positioning hole 7 and the second positioning hole 701, thereby releasing the lock on the relative angle of the first connecting block 2 and the second connecting block 4. Then, the display panel 1 assembly is rotated to the required angle around the axis of the hinge 3. During this rotation, the adjusting frame 8, which is rotatably connected to the second fixing post 602, will rotate accordingly. At this time, the positioning rod 5 slides relative to the groove of the adjusting frame 8. When the display panel 1 reaches the target angle, the positioning bolt 9 is inserted through the second positioning hole 701 and then into the currently aligned first positioning hole 7. Thus, the relative angle between the second connecting block 4 and the first connecting block 2 is rigidly locked. At this time, the adjusting frame 8, the positioning rod 5, and the docking part of the first connecting block 2 and the second connecting block 4 together form a stable triangular support structure, thereby firmly fixing the angle of the display panel 1.

[0028] like Figure 5 As shown, the first connecting block 2 has a threaded hole 201, and the lower part of the positioning rod 5 has a matching thread. The positioning rod 5 is threaded into the threaded hole 201, and the upper part of the positioning rod 5 has a screw head 501. When a quick angle fixation is required, after adjustment, the positioning rod 5 can be screwed into the threaded hole 201 by rotating the screw head 501, so that the screw head 501 is tightly fitted with the two sides of the sliding groove of the adjusting frame 8. The friction prevents the adjusting frame 8 from rotating, thus achieving a quick fixation without inserting or removing the positioning bolt 9. This structural design allows for quick adjustment of the angle between the display panels 1 when temporarily using the display panels 1, and also enables stable fixation at any angle, achieving a convenient effect of continuous angle adjustment.

[0029] like Figure 1 , Figure 2 and Figure 6 As shown, it also includes a support frame 10, an extension frame 11, elastic beads 12, a stretching frame 13, a tray 14, a magnet 15, and a hook 16. The support frame 10 can be installed at the bottom of the display panel 1. The extension frame 11 is slidably installed on the support frame 10. The extension frame 11 can be slid down and pulled out to expand the display height. The support frame 10 has first slots 1001 symmetrically opened on both sides. The extension frame 11 has multiple second slots 1101 evenly opened from top to bottom on both sides. The elastic beads 12 are installed in the first slots 1001. The elastic beads 12 are a standard spring plunger, including a bead body, a spring, and a housing. The shell is fixed in the first slot 1001; when the extension frame 11 is pulled out to a second slot 1101 that is aligned with the first slot 1001, the ball of the elastic bead 12 is engaged in the second slot 1101 under the action of the internal spring, generating a positioning sense and sound, preventing the extension frame 11 from slipping off by itself; both sides of the bottom of the extension frame 11 are slidably connected to the tension frame 13, and the tension frame 13 is pulled out further to increase the support stability; the front side of the display panel 1 is hinged to a downwardly unfoldable support plate 14, the front side of the display panel 1 is provided with a magnet 15, and the upper part of the front side of the display panel 1 is provided with a hook 16.

[0030] When the overall height needs to be adjusted, the operator can pull out the extension frame 11 downwards. During the pulling process, the elastic locking beads 12 inside the support frame 10 will generate a positioning feel at the second locking slot 1101, achieving positioning and preventing it from sliding back on its own. The stretch frame 13 connected to the bottom sides of the extension frame 11 can be slid out to further increase the stability of the device. During the presentation, the operator can fix promotional materials, charts, or teaching models with magnetic backs to the magnet 15 area embedded in the front of the display board 1 using the principle of magnetic adsorption, so as to achieve quick display. At the same time, the tray 14 hinged to the front side of the display board 1 can be unfolded downwards to provide stable bottom support for items placed on the extension frame 11. In addition, promotional posters or signs with hanging ropes can be hung on the hooks 16 for easy display of auxiliary information.

[0031] After use, first retract all extension components: push back the stretching frame 13 and the extension frame 11, and flip the tray 14 upwards to reset it. Then, pull out the positioning bolt 9 and adjust the display panel 1 to an angle that facilitates folding. Finally, fold the multiple display panels 1 sequentially along the axis of the hinge 3. In the folded state, the magnet 15 on the front of the display panel 1 and the mutual attraction between the back of another display panel 1 can achieve self-locking between the display panels 1, facilitating transportation and storage.

[0032] The above embodiments are only for illustrating the technical concept and features of this utility model, and are intended to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the scope of protection of this utility model.

Claims

1. An educational presentation display device, comprising multiple display panels (1), characterized in that, It also includes a first connecting block (2), a second connecting block (4), a positioning rod (5), a mounting bracket (6), an adjusting bracket (8), and a positioning bolt (9). The first connecting block (2) and the second connecting block (4) are respectively fixed on the mating side of two adjacent display panels (1). The first connecting block (2) and the second connecting block (4) are rotatably connected. The second connecting block (4) is provided with a mounting bracket (6). The adjusting bracket (8) is rotatably connected to the mounting bracket (6). A sliding groove is provided on the side of the adjusting bracket (8) away from the mounting bracket (6). A positioning rod (5) is fixedly installed on the connecting block (2). The positioning rod (5) passes through the slide and slides with the slide. The mounting frame (6) has a first positioning hole (7) arrayed on the arc-shaped outer wall near the adjusting frame (8). The adjusting frame (8) has a second positioning hole (701). The positioning bolt (9) can pass through the second positioning hole (701) on the adjusting frame (8) and be inserted into any of the first positioning holes (7) on the mounting frame (6) to lock the relative angle between the second connecting block (4) and the first connecting block (2).

2. The display device for educational presentation according to claim 1, wherein The mounting bracket (6) includes a positioning block (603), a first fixing post (601), and a second fixing post (602). The first fixing post (601) and the second fixing post (602) are arranged parallel to each other at the bottom of the positioning block (603). The positioning block (603), the first fixing post (601), and the second fixing post (602) form a "U" shaped structure. The top of the second connecting block (4) is provided with a first mounting hole (401) and a second mounting hole (402) that are parallel to each other and spaced apart. The first fixing post (601) and the second fixing post (602) are respectively inserted into the first mounting hole (401) and the second mounting hole (402). The second fixing post (602) passes through the adjusting bracket (8) and rotates with it.

3. The display device for educational presentation according to claim 2, wherein It also includes a support frame (10), an extension frame (11), elastic beads (12), and a stretching frame (13). The support frame (10) can be installed at the bottom of the display board (1). The extension frame (11) is slidably installed on the support frame (10). The extension frame (11) can be slid down and pulled out to expand the display height. The support frame (10) has first slots (1001) symmetrically opened on both sides. The extension frame (11) has multiple second slots (1101) evenly opened from top to bottom on both sides. The first slot (1001) is installed with elastic beads (12). When the first slot (1001) and the second slot (1101) are aligned, the elastic beads (12) can be inserted into the second slot (1101) under the action of its own spring, thereby positioning the position of the extension frame (11) pulled out. The bottom sides of the extension frame (11) are slidably connected with stretching frames (13).

4. The display device for educational presentation according to claim 1, wherein The first connecting block (2) has a threaded hole (201), the lower part of the positioning rod (5) has a thread, the positioning rod (5) is threaded with the threaded hole (201), and the upper part of the positioning rod (5) has a screw head (501).

5. The display device for educational presentation according to claim 1, wherein Both the first connecting block (2) and the second connecting block (4) have mating holes on both sides. By screwing screws into the pre-drilled mating holes on both sides of the first connecting block (2) and the second connecting block (4), the two are clamped and fixed to the display board (1).

6. The display device for educational presentation according to claim 3, wherein It also includes a tray (14), and the front side of the display panel (1) is hinged to the tray (14) that can be unfolded downwards.

7. The display device for educational presentation according to claim 3, wherein It also includes a magnet (15), and a magnet (15) is provided on the front side of the display panel (1).

8. The display device for educational presentation according to claim 3, wherein It also includes hooks (16), with hooks (16) provided on the upper front side of the display board (1).

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