Nanometer blackboard with blackboard surface capable of being expanded

Abstract

The utility model relates to the technical field of teaching aids, in particular to a nano blackboard with an extensible blackboard surface. The utility model provides a nanometer blackboard capable of expanding blackboard surfaces, which comprises a nanometer blackboard body, expanding frames are fixed on the back of the nanometer blackboard body, and a plurality of expanding frames are connected through a fixing frame. Connecting hooks of L-shaped structures are arranged on the two sides of the top of the expansion frame, a plurality of connecting sleeves of U-shaped structures are arranged on the portion, located below the connecting hooks, of the expansion frame, a movable plate is slidably connected to the portion, located between the connecting sleeves on the two sides, of the expansion frame, and a plurality of movable rods are rotationally connected to the two sides of the movable plate. Meanwhile, the other end of the movable rod is rotationally connected with a positioning rod inserted into the connecting sleeve; a corresponding L-shaped bearing frame is arranged at the position, located at the connecting hook, of the fixing frame, an inserted L-shaped structure positioning frame is arranged at the position, located at the connecting sleeves, of the fixing frame, and one end of the movable rod is fixedly connected with the positioning frame in an inserted mode.

Description

Technical Field

[0001] This utility model relates to the field of teaching aids technology, specifically to a nano blackboard with an expandable blackboard surface. Background Technology

[0002] Nano blackboards are a new type of teaching tool based on nanomaterial technology. Their surface is coated with a nano-coating, which provides high wear resistance, anti-static properties, and easy cleaning. Compared to traditional blackboards, nano blackboards offer smooth writing, no dust pollution, and support the use of various writing tools (such as chalk and whiteboard markers), making them widely used in schools, training institutions, and other teaching settings.

[0003] However, existing nano blackboards have a fixed surface area. When displaying large charts or other information that requires more space, the display can only be done through the central nano blackboard, resulting in a small and inadequate display that affects the teaching effect. In addition, most existing nano blackboards have fixed area and functions, which cannot be expanded according to actual needs, thus limiting their application in teaching. Utility Model Content

[0004] The purpose of this invention is to provide a nano blackboard with an expandable blackboard surface to solve the problems of fixed surface area and limited functionality of existing nano blackboards.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is a nano blackboard with an expandable blackboard surface, including a nano blackboard body, an expansion frame fixed on the back of the nano blackboard body, and multiple expansion frames connected to each other by a fixing frame.

[0006] The top two sides of the expansion frame are provided with L-shaped connecting hooks, and the expansion frame is provided with multiple U-shaped connecting sleeves below the connecting hooks. The expansion frame is slidably connected to the connecting sleeves on both sides with a movable plate. Multiple movable rods are rotatably connected to both sides of the movable plate, and the other end of the movable rod is rotatably connected to a positioning rod that is inserted into the connecting sleeve.

[0007] The fixed frame is provided with a corresponding L-shaped support at the connecting hook, and the fixed frame is provided with a positioning frame with an L-shaped structure for insertion at multiple connecting sleeves. One end of the movable rod is inserted and fixed to the positioning frame. The support and positioning frame are symmetrically arranged on the fixed frame.

[0008] As a preferred embodiment of this utility model, both the connecting hook and the support frame have an "I" shaped cross-section, and the shape of the connecting hook matches that of the support frame.

[0009] As a preferred embodiment of this utility model, a plurality of connecting sleeves are equidistantly arranged below both sides of the expansion frame, and the number of connecting sleeves is the same as the number of positioning frames. The distance between two adjacent connecting sleeves is greater than the height of the positioning frame, and the width inside the connecting sleeve is greater than or equal to the width of the positioning frame.

[0010] As a preferred technical solution of this utility model, the positioning frame is an overall "I" shaped structure, and a positioning hole matching the shape of the positioning rod is provided in the middle of the positioning frame.

[0011] As a preferred technical solution of this utility model, a plurality of guide rods are provided above the movable plate, and a corresponding limiting frame is provided at the guide rod of the expansion frame. One end of the guide rod passes through the limiting frame and is slidably connected to the limiting frame. At the same time, a compression spring is provided between the end of the guide rod away from the movable plate and the limiting frame. A plurality of pull rings are provided at the bottom of the movable plate.

[0012] As a preferred embodiment of this utility model, the number of positioning rods is the same as the number of connecting sleeves. The positioning rods are provided with corresponding guide seats behind the expansion frame, and the positioning rods are slidably connected to the guide seats. The positioning rods are perpendicular to the side of the connecting sleeves through the guide seats.

[0013] As a preferred embodiment of this utility model, the positioning rod moves at the connecting sleeve by a distance greater than or equal to 1 / 2 the width of the connecting sleeve via the movable rod.

[0014] The advantages of this utility model compared with the prior art are as follows:

[0015] This nano blackboard, with its extension frame and movable panel, allows for flexible expansion of the blackboard surface area to meet the needs of different teaching scenarios. Furthermore, the movable panel, movable rods, and positioning rods on the fixed frame enable quick and easy replacement of the expandable blackboard surface. Attached Figure Description

[0016] Figure 1 This is a front axonometric structural diagram of a nano-blackboard with an expandable blackboard surface according to the present invention.

[0017] Figure 2 This is a back axial view of the nano blackboard with an expandable blackboard surface according to the present invention.

[0018] Figure 3 This is a structural diagram of the nano-blackboard body and extension frame of the nano-blackboard with an expandable blackboard surface according to this utility model.

[0019] Figure 4 This is a structural diagram of the fixing frame for a nano blackboard with an expandable blackboard surface according to the present invention.

[0020] Figure 5 This is a three-dimensional cross-sectional view of the positioning rod of a nano blackboard with an expandable blackboard surface according to this utility model.

[0021] Figure 6 This is an extended structural diagram of a nano-blackboard with an expandable blackboard surface according to the present invention.

[0022] As shown in the figure:

[0023] 1. Nano blackboard body; 2. Extension frame; 3. Fixing frame; 4. Connecting hook; 5. Connecting sleeve; 6. Movable plate; 7. Movable rod; 8. Positioning rod; 9. Support frame; 10. Positioning frame; 11. Positioning hole; 12. Guide rod; 13. Limiting frame; 14. Compression spring; 15. Multiple pull rings; 16. Guide seat. Detailed Implementation

[0024] 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.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" 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 an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] Example 1:

[0027] As per the instruction manual Figures 1-3 As shown, a nano blackboard with an expandable blackboard surface includes a nano blackboard body 1, an expansion frame 2 fixed to the back of the nano blackboard body 1, and multiple expansion frames 2 are connected to each other by a fixing frame 3.

[0028] In this utility model, the top two sides of the expansion frame 2 are provided with L-shaped connecting hooks 4. The cross-section of each connecting hook 4 is an "I" shaped structure, and the shape of the connecting hook 4 matches that of the support frame 9. The expansion frame 2 is provided with multiple U-shaped connecting sleeves 5 below the connecting hooks 4. The multiple connecting sleeves 5 are equidistantly arranged on the lower sides of the expansion frame 2. The expansion frame 2 is slidably connected between the connecting sleeves 5 on both sides.

[0029] In this utility model, multiple movable rods 7 are rotatably connected to both sides of the movable plate 6, and the other end of the movable rod 7 is rotatably connected to a positioning rod 8 that is inserted into the connecting sleeve 5. Multiple guide rods 12 are provided above the movable plate 6, and the extension frame 2 is provided with a corresponding limiting frame 13 at the guide rod 12. One end of the guide rod 12 passes through the limiting frame 13 and is slidably connected to the limiting frame 13. At the same time, a compression spring 14 is provided between the end of the guide rod 12 away from the movable plate 6 and the limiting frame 13. Multiple pull rings 15 are provided at the bottom of the movable plate 6. The number of positioning rods 8 is the same as the number of connecting sleeves 5. The positioning rod 8 is provided with a corresponding guide seat 16 behind the extension frame 2, and the positioning rod 8 is slidably connected to the guide seat 16. The positioning rod 8 is perpendicular to the side of the connecting sleeve 5 through the guide seat 16. At the same time, the moving distance of the positioning rod 8 at the connecting sleeve 5 through the movable rod 7 is greater than or equal to 1 / 2 the width of the connecting sleeve 5.

[0030] As per the instruction manual Figures 4-5 As shown, the fixing frame 3 is provided with a corresponding L-shaped support frame 9 at the connecting hook 4. The cross-section of the support frame 9 is an "I" shaped structure, and the shape of the connecting hook 4 matches that of the support frame 9. The fixing frame 3 is provided with a positioning frame 10 with an L-shaped structure for insertion at multiple connecting sleeves 5. The number of connecting sleeves 5 is the same as the number of positioning frames 10. The distance between two adjacent connecting sleeves 5 is greater than the height of the positioning frame 10, and the width inside the connecting sleeve 5 is greater than or equal to the width of the positioning frame 10.

[0031] In this utility model, one end of the movable rod 7 is inserted and fixed to the positioning frame 10. The positioning frame 10 has an overall "I"-shaped structure, and a positioning hole 11 matching the shape of the positioning rod 8 is provided in the middle of the positioning frame 10. The support frame 9 and the positioning frame 10 are symmetrically arranged on the fixed frame 3. Only a single row of support frames 9 and positioning frames 10 exists on the fixed frame 3 located at the edge of the expandable range (e.g., Figure 6 (As shown).

[0032] In practical implementation, when it is necessary to expand or replace the surface area of ​​the nano-backplate body blackboard, the movable plate 6 is pulled downwards by multiple pull rings 15. The movable plate 6 drives one end of the rotatably connected movable rod 7 to move downwards. The movable rod 7 drives the rotatably connected positioning rod 8 to be pulled out from the connecting sleeve 5 and positioning frame 10 along the guide seat 16 (or pulled out from the connecting sleeve 5 in the unconnected state, and the nano-blackboard body 1 and the extension frame 2 connected to the rear and the fixed frame 3 are moved and inserted to complete the board expansion). This separates the connection between the extension frame 2 and the fixed frame 3, allowing the extension frame 2 to be lifted upwards and removed for replacement. Then, the movable plate 6 is reset by the compression spring 14, thereby inserting the positioning rod 8 into the corresponding connecting sleeve 5 and positioning frame 10, thus completing the board expansion.

[0033] The above describes the present application and its embodiments, which are not restrictive, and the embodiments shown in the detailed description are only one of the embodiments of the present application, and the actual structure is not limited thereto. In summary, if a person skilled in the art is inspired thereby, without departing from the spirit of the present application, without creative design, similar structure and embodiments to the technical solution, which should belong to the protection scope of the present application.

Claims

1. A nano-blackboard with an expandable blackboard surface, comprising a nano-blackboard body (1), characterized in that: An extension frame (2) is fixed to the back of the nano blackboard body (1), and multiple extension frames (2) are connected to each other by a fixing frame (3). The expansion frame (2) is provided with L-shaped connecting hooks (4) on both sides of the top, and the expansion frame (2) is provided with multiple U-shaped connecting sleeves (5) below the connecting hooks (4). The expansion frame (2) is slidably connected between the two connecting sleeves (5). Multiple movable rods (7) are rotatably connected to both sides of the movable plate (6), and the other end of the movable rod (7) is rotatably connected to a positioning rod (8) that is inserted into the connecting sleeve (5). The fixed frame (3) is provided with a corresponding L-shaped support frame (9) at the connecting hook (4), and the fixed frame (3) is provided with a positioning frame (10) with an L-shaped structure for insertion at multiple connecting sleeves (5). One end of the movable rod (7) is inserted and fixed to the positioning frame (10). The support frame (9) and the positioning frame (10) are symmetrically arranged on the fixed frame (3).

2. The nano-blackboard with an expandable blackboard surface according to claim 1, characterized in that: The cross-sections of the connecting hook (4) and the support frame (9) are both "I" shaped structures, and the shapes of the connecting hook (4) and the support frame (9) are matched.

3. The nano-blackboard with an scalable blackboard surface according to claim 1, characterized in that: Multiple connecting sleeves (5) are equidistantly arranged below both sides of the extension frame (2), and the number of connecting sleeves (5) is the same as the number of positioning frames (10). The distance between two adjacent connecting sleeves (5) is greater than the height of the positioning frame (10), and the width inside the connecting sleeve (5) is greater than or equal to the width of the positioning frame (10).

4. The nano-blackboard with an scalable blackboard surface according to claim 1, characterized in that: The positioning frame (10) is an "I" shaped structure, and a positioning hole (11) matching the shape of the positioning rod (8) is provided in the middle of the positioning frame (10).

5. A nano-blackboard with an expandable blackboard surface according to claim 1, characterized in that: Multiple guide rods (12) are provided above the movable plate (6), and the expansion frame (2) is provided with a corresponding limiting frame (13) at the guide rod (12). One end of the guide rod (12) passes through the limiting frame (13) and is slidably connected to the limiting frame (13). At the same time, a compression spring (14) is provided between the end of the guide rod (12) away from the movable plate (6) and the limiting frame (13). Multiple pull rings (15) are provided at the bottom of the movable plate (6).

6. The nano-blackboard with an scalable blackboard surface according to claim 1, characterized in that: The number of positioning rods (8) is the same as the number of connecting sleeves (5). The positioning rods (8) are located behind the extension frame (2) and are provided with corresponding guide seats (16). The positioning rods (8) and guide seats (16) are slidably connected. The positioning rods (8) are perpendicular to the side of the connecting sleeves (5) through the guide seats (16).

7. The nano-blackboard with an scalable blackboard surface according to claim 1, characterized in that: The positioning rod (8) moves at the connecting sleeve (5) by a distance greater than or equal to 1 / 2 the width of the connecting sleeve (5) via the movable rod (7).

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