An erasable children's drawing board

Abstract

The utility model relates to children's drawing board technical field discloses a children's drawing board convenient to erase, including fixed plate, the upside of fixed plate is provided with two limit sliding platform, the sliding connection has the toothed plate on every limit sliding platform, the upside of one end of two toothed plates away from each other is fixedly connected with the extension drawing board respectively, the gear that is rotatably connected with the upside of fixed plate is jointly engaged between two toothed plates, the upside of gear is fixedly connected with a plurality of sleeves, a plurality of sleeves are circularly arrayed, the inboard sliding connection of every sleeve has the connecting rod, the utility model discloses the frame is pulled outward by both sides push handle, drives the extension drawing board of both sides to stretch from the main drawing board downside, thereby reaches the drawing board area of expansion, when needing to remove the drawing board and carry, can push the frame inwards, folds the extension drawing board of both sides with the main drawing board, thereby reaches the problem of reducing the space occupied when carrying outdoors.

Description

Technical Field

[0001] This utility model relates to the field of children's drawing board technology, and in particular to a children's drawing board that is easy to erase. Background Technology

[0002] Children's magnetic drawing boards are interactive toys designed using magnetic principles, available in both physical and electronic forms. The physical version uses magnets to attract paint, allowing for free creation and copying, making it suitable for travel. The electronic version offers double-sided coloring. The physical magnetic drawing board displays color through magnetic attraction; when a brush is applied, magnetic powder at the bottom is attracted to the surface, forming a pattern. Pulling the clearing slider allows for easy erasing. However, existing children's magnetic drawing boards generally suffer from insufficient drawing area.

[0003] For example, Chinese utility model patent CN203651314U discloses a magnetic drawing board, including a base plate, a demagnetizing rod, and a magnetic writing board. The demagnetizing rod is located on the base plate, and the magnetic writing board is placed on top of the demagnetizing rod. Although this solution uses the rolling cooperation of pulleys and grooves to reduce the friction between them, allowing the demagnetizing rod to move easily left and right in parallel and extending the service life of the magnetic drawing board, the drawing board area of ​​this solution has limited space for creation, which is often not enough for a child to complete a complete drawing creation. On the other hand, if the drawing board area is too large, it may be inconvenient for children to carry it when going out.

[0004] In view of this, a children's drawing board that is easy to erase is proposed to solve the above problems. Utility Model Content

[0005] To address the technical problem of insufficient usable area on children's drawing boards, this utility model provides a children's drawing board that is easy to erase.

[0006] This utility model is achieved using the following technical solution: an easy-to-erase children's drawing board, comprising a fixed plate, two limiting slides on the upper side of the fixed plate, a toothed plate slidably connected to each limiting slide, and an extension drawing board fixedly connected to the upper side of the two toothed plates at their respective far ends, with a gear meshing between the two toothed plates and rotatably connected to the upper side of the fixed plate, multiple sleeves fixedly connected to the upper side of the gear, the multiple sleeves being arranged in a circumferential array, a connecting rod slidably connected to the inner side of each sleeve, and a main drawing board fixedly connected to the upper end of the multiple connecting rods, a lifting drive mechanism for moving the main drawing board up and down on the upper side of the gear, and limiting support mechanisms for stabilizing and supporting the extension drawing boards on both sides of the fixed plate.

[0007] Preferably, the lifting drive mechanism includes two ring platforms fixedly connected to the upper side of the gear. The two ring platforms are concentric circles, with one ring platform sleeved around the other ring platform. Both ring platforms have grooves located on opposite sides of the center of the circle and on the same straight line. Each ring platform has a push rod assembly mechanism on its upper side.

[0008] Preferably, the top rod assembly mechanism includes a top pin that is slidably connected to the upper side of each ring platform, and the upper ends of the two top pins are fixedly connected to the lower side of the main drawing board.

[0009] Preferably, the limiting support mechanism includes multiple limiting rods that are slidably connected to both sides of the fixed plate, and the ends of the multiple limiting rods away from the gear are fixedly connected to a frame, and each side of the frame is fixedly connected to one side of the extended drawing board on the same side.

[0010] Preferably, a push handle is fixedly connected to the outer side of each of the side frames.

[0011] Preferably, a grid plate is fixedly connected to the lower side of both the extension drawing board and the main drawing board. Each grid cell on the grid plate is filled with mineral oil, and magnetic powder is added to the mineral oil. A walkway is installed on the lower side of the grid plate. A sliding groove is formed between the two sides of the walkway. A magnetic plate is provided on the inner side of the sliding groove. A locking block is fixedly connected to one end of the magnetic plate. The outer side of the locking block is slidably connected to the inner side of the sliding groove. A handle is fixedly connected to the side of the locking block away from the magnetic plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model uses push handles on both sides to pull the frame outward, causing the extended drawing boards on both sides to extend from the bottom of the main drawing board, thereby expanding the drawing board area. When it is necessary to move and carry the drawing board, the frame can be pushed inward to fold the extended drawing boards on both sides with the main drawing board, thereby reducing the space occupied when carrying it outdoors. 2. This utility model folds the main drawing board and the extended drawing boards on both sides, making it suitable not only for children's home use but also for kindergarten classrooms. It can be used in conjunction with a stand for teaching and display purposes, making it highly practical. Attached Figure Description

[0013] Figure 1 A schematic diagram of the overall structure of a children's drawing board that is easy to erase, provided by this utility model; Figure 2 for Figure 1 Side view; Figure 3 for Figure 1 A schematic diagram of the structure of the extended drawing board after it has been extended. Figure 4 for Figure 3Internal structure diagram; Figure 5 for Figure 1 A schematic diagram of the exploded structure; Figure 6 for Figure 1 A schematic diagram of the lifting drive mechanism.

[0014] Explanation of key symbols: 1. Frame; 2. Handle; 3. Push handle; 4. Main drawing board; 5. Fixing plate; 6. Extension drawing board; 7. Slide groove; 8. Limiting rod; 9. Tooth plate; 10. Gear; 11. Sleeve; 12. Connecting rod; 13. Top pin; 14. Ring platform; 15. Groove; 16. Grid plate; 17. Magnetic plate. Detailed Implementation

[0015] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0016] Example: Please combine Figure 6 This embodiment provides an easy-to-erase children's drawing board, including a fixed plate 5. Two limiting slides are provided on the upper side of the fixed plate 5. In this embodiment, the limiting slides are T-shaped slides. Please combine Figure 6 As shown, a toothed plate 9 is slidably connected to each limiting slide. An extension drawing plate 6 is fixedly connected to the upper side of the two toothed plates 9 at their opposite ends. A gear 10 that is rotatably connected to the upper side of the fixed plate 5 meshes between the two toothed plates 9. Please combine Figure 6 As shown, in this embodiment, two sleeves 11 are fixedly connected to the upper side of the gear 10. The two sleeves 11 are arranged in a circumferential array. A connecting rod 12 is slidably connected to the inner side of each sleeve 11. The upper ends of the two connecting rods 12 are fixedly connected to the main drawing board 4. A lifting drive mechanism for moving the main drawing board 4 up and down is provided on the upper side of the gear 10. Limiting support mechanisms for stabilizing and supporting the extended drawing boards 6 on both sides are provided on both sides of the fixed plate 5.

[0017] Please combine Figure 6 As shown, the lifting drive mechanism includes two ring platforms 14 fixedly connected to the upper side of the gear 10. The two ring platforms 14 are concentric circles, and one ring platform 14 is sleeved on the outer periphery of the other ring platform 14. Both ring platforms 14 are provided with grooves 15. When the top pin 13 moves from the upper surface of the ring platform 14 to the bottom of the groove 15, the main drawing plate 4 will descend. When the bottom of the groove 15 moves to the ring platform 14, the main drawing plate 4 will descend and rise. Please combine Figure 6As shown, the two grooves 15 are located on both sides of the center and on the same straight line, and each ring platform 14 is provided with a push rod assembly mechanism on its upper side.

[0018] Please combine Figure 6 As shown, the top rod assembly mechanism includes a top pin 13 that is slidably connected to the upper side of each ring platform 14, and the upper ends of the two top pins 13 are fixedly connected to the lower side of the main drawing board 4.

[0019] Please combine Figure 5 As shown, the limiting support mechanism includes two limiting rods 8 that are slidably connected to both sides of the fixed plate 5. The ends of the multiple limiting rods 8 away from the gear 10 are fixedly connected to a frame 1. Each frame 1 is fixedly connected to one side of the extended drawing board 6 on the same side.

[0020] The limiting rods 8 on both sides can provide support and balance from below for the gravity of the extended drawing board 6 after it extends. Please combine Figure 1 As shown, a push handle 3 is fixedly connected to the outer side of each side frame 1, which makes it easy to push and pull the frame 1. Please combine Figure 4 As shown, grid plates 16 are fixedly connected to the lower sides of both the extension drawing board 6 and the main drawing board 4. Each grid on the grid plate 16 is filled with mineral oil, and magnetic powder is added to the mineral oil. A walkway is installed on the lower side of the grid plate 16. A slide groove 7 is opened between the two sides of the walkway. A magnetic plate 17 is provided on the inner side of the slide groove 7. A locking block is fixedly connected to one end of the magnetic plate 17. The outer side of the locking block is slidably connected to the inner side of the slide groove 7. A handle 2 is fixedly connected to the side of the locking block away from the magnetic plate 17.

[0021] In this embodiment, a magnetic drawing board is used to achieve the function of quick erasure, which is a mature existing technology. In other embodiments, liquid crystal handwriting drawing board technology can be used, which can also achieve the effect of easy erasure. The implementation principle of an easy-to-erase children's drawing board in this application embodiment is as follows: When the drawing board needs to be unfolded, the push handles 3 on both sides are pulled outward, which drives the toothed plates 9 on both sides to move respectively. The limiting rods 8 on both sides slide outward along the inner side of the fixed plate 5, and at the same time push the gear 10 to rotate, which indirectly drives the two ring platforms 14 to rotate. At this time, when the top pin 13 on the lower side of the main drawing board 4 slides along the circumference of the upper side of the two ring platforms 14, after rotating a certain angle, it encounters the groove 15 on each ring platform 14. The top pin 13 descends, and the connecting rod 12 slides down along the inner side of the sleeve 11, so that the entire main drawing board 4 descends downward. At this time, the extended drawing boards 6 on both sides move to the maximum distance to one side.

[0022] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An easy-to-erase children's drawing board, comprising a fixing plate (5), characterized in that, The upper side of the fixed plate (5) is provided with two limiting slides, and a toothed plate (9) is slidably connected to each limiting slide. An extension drawing board (6) is fixedly connected to the upper side of the two toothed plates (9) that are far apart from each other. A gear (10) that is rotatably connected to the upper side of the fixed plate (5) is meshed between the two toothed plates (9). A plurality of sleeves (11) are fixedly connected to the upper side of the gear (10). The plurality of sleeves (11) are arranged in a circumferential array. A connecting rod (12) is slidably connected to the inner side of each sleeve (11). The upper end of the plurality of connecting rods (12) is fixedly connected to the main drawing board (4). A lifting drive mechanism that moves the main drawing board (4) up and down is provided on the upper side of the gear (10). Limiting support mechanisms that stabilize and support the extension drawing boards (6) on both sides of the fixed plate (5) are provided.

2. The children's drawing board that is easy to erase as described in claim 1, characterized in that, The lifting drive mechanism includes two ring platforms (14) fixedly connected to the upper side of the gear (10). The two ring platforms (14) are concentric circles, and one ring platform (14) is sleeved on the outer periphery of the other ring platform (14). Both ring platforms (14) are provided with grooves (15). The two grooves (15) are located on both sides of the center of the circle and on the same straight line. Each ring platform (14) is provided with a push rod assembly mechanism on its upper side.

3. The children's drawing board that is easy to erase as described in claim 2, characterized in that, The top rod assembly includes a top pin (13) that is slidably connected to the upper side of each ring platform (14), and the upper ends of the two top pins (13) are fixedly connected to the lower side of the main drawing board (4).

4. The children's drawing board that is easy to erase as described in claim 1, characterized in that, The limiting support mechanism includes multiple limiting rods (8) that are slidably connected to both sides of the fixed plate (5). The ends of the multiple limiting rods (8) away from the gear (10) are fixedly connected to a frame (1). Each side of the frame (1) is fixedly connected to one side of the extended drawing board (6) on the same side.

5. The children's drawing board that is easy to erase as described in claim 4, characterized in that, A push handle (3) is fixedly connected to the outside of each side of the frame (1).

6. The children's drawing board that is easy to erase as described in claim 1, characterized in that, The lower sides of the extended drawing board (6) and the main drawing board (4) are both fixedly connected to a grid plate (16). Each grid on the grid plate (16) is filled with mineral oil, and magnetic powder is added to the mineral oil. A jogging platform is installed on the lower side of the grid plate (16). A sliding groove (7) is opened between the two sides of the jogging platform. A magnetic plate (17) is provided on the inner side of the sliding groove (7). A locking block is fixedly connected to one end of the magnetic plate (17). The outer side of the locking block is slidably connected to the inner side of the sliding groove (7). A handle (2) is fixedly connected to the side of the locking block away from the magnetic plate (17).

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