Folding drawing board for educational display

Abstract

The utility model relates to the field of teaching appliances, and discloses a folding drawing board for education display, which comprises two panels, expansion components are arranged in the two panels, the rear parts of the two panels are fixedly connected with two hinges which are distributed up and down, the opposite sides of the two panels are rotatably connected with rotating shafts, and the rotating shafts are connected with the expansion components. An upper supporting rod is fixedly connected to the bottom of the panel, a lower supporting rod is slidably connected to the periphery of the upper supporting rod, one end of a compression spring is fixedly connected to the interior of the upper supporting rod, a sliding block is fixedly connected to the other end of the compression spring, a plurality of evenly-distributed clamping grooves are formed in the front portion of the lower supporting rod, and the sliding block slides in the clamping grooves. The expansion assembly comprises two expansion plates, the two expansion plates are slidably connected to the interior of the panel, and two springs distributed left and right are fixedly connected to the interior of each expansion plate. According to the utility model, the panel at the top of the upper support rod is adjusted by adjusting the height of the upper support rod, so that the drawing board can be lifted and lowered according to requirements.

Description

Technical Field

[0001] The utility model relates to the field of teaching tools, in particular to a foldable drawing board for educational display. Background Art

[0002] Education appeared at the beginning of human society and originated from social labor. It was created to meet the needs of imparting production labor and social life experience. In order to better display the content of education and make people understand it more intuitively, many auxiliary tools are usually used in the education process to assist education, and the drawing board is one of them.

[0003] Current educational drawing boards are usually simple flat plates that are fixed by hanging or leaning against auxiliary objects. The height of such drawing boards usually depends only on the height of the auxiliary objects, and the height of the drawing boards themselves cannot be adjusted. Therefore, during use, they cannot be adjusted according to the environment or user needs, which greatly reduces the overall convenience of use. Therefore, a foldable drawing board for educational display is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a foldable drawing board for educational display, aiming to improve the problem that the height of the drawing board cannot be freely adjusted in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a foldable drawing board for educational display, comprising two panels, expansion components are arranged inside the two panels, the rear parts of the two panels are fixedly connected with two hinges distributed up and down, the two panels are rotatably connected with a rotating shaft on the opposite sides, an upper support rod is fixedly connected to the bottom of the panel, a lower support rod is slidably connected to the outer periphery of the upper support rod, one end of a compression spring is fixedly connected to the inside of the upper support rod, and a slider is fixedly connected to the other end of the compression spring, a plurality of evenly distributed slots are opened at the front part of the lower support rod, and the slider slides inside the slots.

[0006] As a further description of the above technical solution:

[0007] The expansion component includes two expansion plates, which are slidably connected to the inside of the panel respectively. Two springs distributed on the left and right are fixedly connected to the inside of the expansion plate. A pressing block is fixedly connected to the front end of the spring, and the pressing block passes through the hole groove at the edge of the panel.

[0008] As a further description of the above technical solution:

[0009] The outer periphery of the pressing block is fixedly connected to a limiting block, and the limiting block is slidably connected to the inside of the expansion plate.

[0010] As a further description of the above technical solution:

[0011] A handle is fixedly connected to the edge of the expansion board.

[0012] As a further description of the above technical solution:

[0013] A storage box is rotatably connected to the lower front part of the panel, a storage groove is opened at the bottom edge of the panel, and the storage box is rotatably connected to the inside of the storage groove.

[0014] As a further description of the above technical solution:

[0015] A blocking block is fixedly connected to the outer periphery of the sliding block, and the blocking block is slidably connected to the interior of the upper supporting rod.

[0016] As a further description of the above technical solution:

[0017] A connecting groove is provided on the top of the panel, and a fixing rod is slidably connected to the top of the panel, and the diameter of the fixing rod matches the diameter of the connecting groove.

[0018] As a further description of the above technical solution:

[0019] The bottom of the lower support rod is threadedly connected with an oblique support rod, and the bottom of the oblique support rod is fixedly connected with a bottom plate.

[0020] The utility model has the following beneficial effects:

[0021] 1. In the utility model, the height of the upper support rod is adjusted by the cooperation of the upper support rod, the lower support rod, the slider, the compression spring and the slot, and the panel on the top of the upper support rod is adjusted by adjusting the height of the upper support rod, so as to achieve the lifting and lowering adjustment of the drawing board as required.

[0022] 2. In the utility model, after the two display board objects are opened, the expansion board is opened by the cooperation of the handle with the pressing block, the spring and the limit block, thereby realizing the secondary opening and storage of the entire drawing board, increasing the overall painting and writing area of ​​the drawing board, and improving the practicality of the drawing board. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A three-dimensional schematic diagram of the foldable drawing board for educational display proposed by the utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the fixing rod of the foldable drawing board for educational display proposed by the utility model;

[0025] Figure 3 This is a schematic diagram of the structure of the expansion board of the foldable drawing board for educational display proposed by the utility model;

[0026] Figure 4This is a schematic diagram of the structure of the lower support rod of the foldable drawing board for educational display proposed by the utility model;

[0027] Figure 5 The utility model is a schematic diagram of the structure of the pressing block of the foldable drawing board for educational display.

[0028] Legend:

[0029] 1. Panel; 201. Pressing block; 202. Handle; 203. Expansion board; 204. Limiting block; 205. Spring; 3. Storage slot; 4. Upper support rod; 5. Diagonal support rod; 6. Fixed rod; 7. Rotating shaft; 8. Storage box; 9. Slider; 10. Lower support rod; 11. Hinge; 12. Compression spring; 13. Stopping block; 14. Card slot. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] Reference Figure 1 , Figure 2 and Figure 4 The utility model provides an embodiment: a foldable drawing board for educational display, comprising two panels 1, both panels 1 are provided with expansion components inside, the rear parts of the two panels 1 are fixedly connected with two hinges 11 distributed up and down, the hinges 11 here are existing mature technologies, the two panels 1 are rotatably connected with the rotating shaft 7 on the opposite sides, the rotating shaft 7 is an existing mature technology, and the purpose of the rotation of the two panels 1 is achieved through the cooperation of the inner and outer layers, the bottom of the panel 1 is fixedly connected with the upper support rod 4, the panel 1 and the upper support rod 4 are fixed together by screws, and can be disassembled by unscrewing the screws when disassembly is needed, which also facilitates the maintenance and replacement of the panel 1, and the upper support rod 4 is external The lower support rod 10 is slidably connected to the periphery, and the bottom of the lower support rod 10 is threadedly connected to the diagonal support rod 5. When it needs to be folded up and stored, the diagonal support rod 5 can be removed to reduce the space occupied and facilitate the overall transportation of the drawing board 1. The bottom of the diagonal support rod 5 is fixedly connected to the support rod 4 on the bottom plate, and one end of the compression spring 12 is fixedly connected to the inside, and the other end of the compression spring 12 is fixedly connected to a slider 9. The outer periphery of the slider 9 is fixedly connected to a blocking block 13 to prevent the slider 9 from falling off due to excessive force generated by the compression spring 12, which plays a role of insurance. The blocking block 13 is slidably connected to the inside of the upper support rod 4, and a plurality of evenly distributed grooves 14 are opened on the front of the lower support rod 10, and the slider 9 slides in the grooves 14.

[0032] Reference Figure 3 and Figure 5 The expansion assembly includes two expansion boards 203. The surface of the expansion board 203 is a smooth white board, which is made of the same material as the panel 1. The two expansion boards 203 are slidably connected to the inside of the panel 1. The expansion board 203 has a certain damping when sliding to prevent it from falling off due to sliding too fast. Two springs 205 distributed on the left and right are fixedly connected to the inside of the expansion board 203. The front end of the spring 205 is fixedly connected to a pressing block 201. The pressing block 201 runs through the hole groove at the edge of the panel 1. The edge of the expansion board 203 is fixedly connected to a handle 202. The outer periphery of the pressing block 201 is fixedly connected to a limiting block 204, which is used to limit the pressing block 201 to prevent the pressing block 201 from falling off due to excessive force generated by the spring 205. The limiting block 204 is slidably connected to the inside of the expansion board 203.

[0033] A storage box 8 is rotatably connected to the lower front side of the panel 1. When the panel is opened, the storage box 8 can be opened to temporarily store some tools such as brushes and erasers. A storage groove 3 is provided at the bottom edge of the panel 1 for storing the storage box 8 when the panel 1 is folded. The storage box 8 is rotatably connected inside the storage groove 3. A connecting groove is provided at the top of the panel 1. A fixing rod 6 is slidably connected to the top of the panel 1. The diameter of the fixing rod 6 matches the diameter of the connecting groove.

[0034] Working principle: When you need to use the drawing board, first press the slider 9, press the slider 9 into the upper support rod 4, make it disengage from the slot 14 of the lower support rod 10, and then lift the upper support rod 4 upward. After it is lifted to the required height, the compression spring 12 generates an elastic force to push the slider 9, and the front of the slider 9 is pushed out of the upper support rod 4 and passes through the slot 14 of the lower support rod 10. The slider 9 is fixed by the slot 14 and the elastic force of the compression spring 12, thereby fixing the height of the panel 1. After the height of the panel 1 is adjusted, the two panels 1 are moved, and the panel 1 is forced to cooperate with the rotating shaft 7 to fully open the two panels 1. When the panel 1 is opened to the required height, After reaching the angle, the diagonal support rod 5 is rotated to connect with the lower support rod 10. When the expansion board 203 is needed, the expansion board 203 is pulled to slide in the panel 1 by the handle 202. After the expansion board 203 is pulled to a certain position, the spring 205 generates an elastic force to push the pressing block 201. The pressing block 201 passes through the hole groove at the edge of the panel 1, and the pressing block 201 is fixed by the hole groove and the elastic force of the spring 205. The position of the expansion board 203 is limited by fixing the pressing block 201. When the expansion board 203 needs to be folded, it is only necessary to press the pressing block 201 and push the expansion board 203 into the panel 1 again.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foldable drawing board for educational display, comprising two panels (1), characterized in that: The two panels (1) are provided with expansion components inside, the rear parts of the two panels (1) are fixedly connected with two hinges (11) distributed up and down, the two panels (1) are rotatably connected with a rotating shaft (7) on the opposite sides, the bottom of the panel (1) is fixedly connected with an upper support rod (4), the outer periphery of the upper support rod (4) is slidably connected with a lower support rod (10), one end of a compression spring (12) is fixedly connected inside the upper support rod (4), the other end of the compression spring (12) is fixedly connected with a slider (9), and the front part of the lower support rod (10) is provided with a plurality of evenly distributed slots (14), and the slider (9) slides inside the slots (14).

2. The foldable drawing board for educational display according to claim 1, characterized in that: The expansion component comprises two expansion plates (203), the two expansion plates (203) are respectively slidably connected inside the panel (1), two springs (205) distributed on the left and right are fixedly connected inside the expansion plates (203), a pressing block (201) is fixedly connected to the front end of the spring (205), and the pressing block (201) passes through a hole groove at the edge of the panel (1).

3. The foldable drawing board for educational display according to claim 2, characterized in that: The outer periphery of the pressing block (201) is fixedly connected to a limiting block (204), and the limiting block (204) is slidably connected to the interior of the expansion plate (203).

4. The foldable drawing board for educational display according to claim 2, characterized in that: A handle (202) is fixedly connected to the edge of the expansion board (203).

5. The foldable drawing board for educational display according to claim 1, characterized in that: A storage box (8) is rotatably connected to the lower front part of the panel (1), a storage groove (3) is provided at the bottom edge of the panel (1), and the storage box (8) is rotatably connected to the inside of the storage groove (3).

6. The foldable drawing board for educational display according to claim 1, characterized in that: A blocking block (13) is fixedly connected to the outer periphery of the sliding block (9), and the blocking block (13) is slidably connected to the interior of the upper support rod (4).

7. The foldable drawing board for educational display according to claim 1, characterized in that: A connection groove is provided on the top of the panel (1), and a fixing rod (6) is slidably connected to the top of the panel (1), wherein the diameter of the fixing rod (6) matches the diameter of the connection groove.

8. The foldable drawing board for educational display according to claim 1, characterized in that: The bottom of the lower support rod (10) is threadedly connected to an oblique support rod (5), and the bottom of the oblique support rod (5) is fixedly connected to a bottom plate.

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