Expandable teaching auxiliary whiteboard

Abstract

The utility model relates to the technical field of auxiliary whiteboards, and discloses an expandable teaching auxiliary whiteboard which comprises a first whiteboard, a mounting cavity is formed in the front end of the interior of the first whiteboard, a containing cavity is formed in the rear end of the interior of the first whiteboard, and a second whiteboard is arranged in the containing cavity. According to the utility model, if dust on the surface of the first white board needs to be treated, a push-pull plate can be pulled to drive a connecting shaft to move forwards, so that a T-shaped sliding block moves to the foremost end of a T-shaped sliding groove, then a first transmission gear is in meshed connection with a second driven gear, and a second transmission gear is in meshed connection with a power gear; and a servo motor drives a first driven gear to rotate, so that a second threaded rod rotates, a second threaded block drives a movable frame to move, dust on the first whiteboard is cleaned, and the problem that workers need to manually clean the first whiteboard in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching whiteboards, in particular to an expandable teaching auxiliary whiteboard. Background Art

[0002] Teaching whiteboards are mainly tools used for writing demonstrations in the education industry. Traditional blackboards use chalk to write, which is still the mainstream, mainly because of its low cost. However, when writing on traditional chalk blackboards, a lot of dust will be generated due to the friction between the chalk and the blackboard, which seriously affects the health of teaching staff. In view of this, a teaching whiteboard has gradually been derived. At present, teaching whiteboards have gradually begun to be promoted and applied, and the effect of use is good. For this reason, an expandable teaching auxiliary whiteboard is proposed.

[0003] Most of the existing teaching whiteboards cannot be expanded effectively, so they may be limited when used for teaching. In addition, after being unused for a long time, the dust covering the surface of the existing teaching whiteboards cannot be effectively and automatically handled, and generally requires manual cleaning by staff. Therefore, technical improvements are urgently needed. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art, and to propose an expandable teaching auxiliary whiteboard. Compared with the existing teaching whiteboard, when the teaching whiteboard needs to be expanded, the push-pull plate is pushed so that the connecting shaft pushes the T-shaped slider to the rear end of the T-shaped slide groove, so that the power gear is meshed and connected with the first transfer gear, and the connecting gear is meshed and connected with the second transfer gear, and then the servo motor is started to drive the servo motor to rotate the power gear, so that the power gear is meshed and connected with the first transfer gear, and the connecting gear is meshed and connected with the second transfer gear, so that the first threaded rod is rotated, so that the first threaded block drives the second whiteboard to move out of the placement cavity, so as to expand, thereby avoiding the problem that the previous teaching whiteboard cannot be effectively expanded.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: comprising a first whiteboard, a mounting cavity is provided at the front end of the first whiteboard, a placement cavity is provided at the rear end of the first whiteboard, a second whiteboard is provided inside the placement cavity, limiting slide grooves are provided at the upper and lower ends of the placement cavity, the front ends of the upper and lower surfaces of the second whiteboard are fixedly connected to limiting sliders, a movable cavity is provided inside the second whiteboard, a first threaded block is fixedly connected to the front end of the inner wall of the movable cavity, a servo motor is fixedly connected to one side of the lower end of the mounting cavity, a power gear is fixedly connected to the output end of the servo motor, a side plate is provided at the rear end of the power gear, a connecting gear is rotatably connected to the rear end outer wall of the side plate, a first threaded rod is fixedly connected to the rear end outer wall of the connecting gear, and the first threaded rod passes through the mounting cavity and the placement cavity to the movable cavity;

[0006] The transmission gear of the present invention is a gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a first gear and a second gear selected from the group consisting of a

[0007] A movable slide groove is provided on the lower surface of the first whiteboard, a movable slide rod is provided inside the movable slide groove, a movable slider is sleeved on the rod body of the movable slide rod, a movable frame is fixedly connected to the upper surface of the second threaded block and the lower surface of the movable slider, a fixed plate is fixedly connected to the rear end of the upper surface of the first whiteboard, a tarpaulin is fixedly connected to the front end outer wall of the fixed plate, a T-shaped slider is rotatably connected to the middle part of the connecting shaft body, and a T-shaped slide groove is provided at the upper end of the mounting cavity;

[0008] Through the above technical solution, compared with the existing teaching whiteboard, the teaching whiteboard rotates the first transmission gear and the second transmission gear connected on the push-pull plate, and the objects of the first transmission gear and the second transmission gear being meshed and connected are different, so that the first threaded rod or the second threaded rod can be independently controlled by the servo motor to rotate, so that the servo motor can be independently controlled to extend the second whiteboard or move the movable frame to wipe the first whiteboard, so that the teaching whiteboard can be more energy-efficient.

[0009] Furthermore, a plurality of fixing blocks are fixedly connected to one side of the upper surface and the lower surface of the first whiteboard;

[0010] Through the above technical solution, the first whiteboard can be installed more conveniently by fixing a plurality of fixing blocks to one side of the upper surface and the lower surface of the first whiteboard.

[0011] Furthermore, the limit sliding blocks are all slidably connected inside the limit sliding grooves;

[0012] Through the above technical solution, better limiting can be achieved by sliding the limiting sliders inside the limiting sliding grooves.

[0013] Furthermore, the second whiteboard is slidably connected to the placement cavity;

[0014] Through the above technical solution, the second whiteboard can be better stored by slidingly connecting the second whiteboard with the placement cavity.

[0015] Furthermore, one end of the tarpaulin away from the fixing plate is fixedly connected to the second threaded block;

[0016] Through the above technical solution, dust can be better prevented from entering the installation cavity by fixing the end of the tarpaulin away from the fixing plate to the second threaded block.

[0017] Furthermore, the fixed sliding blocks are all slidably connected inside the fixed sliding grooves;

[0018] Through the above technical solution, the second threaded block can be better limited by the fixed sliding block being slidably connected inside the fixed sliding groove.

[0019] Furthermore, the T-shaped sliding block is slidably connected inside the T-shaped sliding groove;

[0020] Through the above technical solution, the first transfer gear and the second transfer gear can be better meshed with different gears respectively through the sliding connection of the T-shaped slider inside the T-shaped slide groove.

[0021] Furthermore, a brush plate is fixedly connected to an outer wall of one side of the movable frame close to the first whiteboard;

[0022] Through the above technical solution, the brush plate is fixedly connected to the outer wall of one side of the movable frame close to the first whiteboard, so that the dust on the surface of the first whiteboard can be better cleaned.

[0023] The utility model has the following beneficial effects:

[0024] 1. The utility model proposes an expandable teaching auxiliary whiteboard. Compared with the existing teaching whiteboard, when the teaching whiteboard needs to be expanded, the push-pull plate is pushed so that the connecting shaft pushes the T-shaped slider to the rear end of the T-shaped slide groove, so that the power gear is meshed and connected with the first transfer gear, and the connecting gear is meshed and connected with the second transfer gear, and then the servo motor is started to drive the servo motor to rotate the power gear, so that the power gear is meshed and connected with the first transfer gear, and the connecting gear is meshed and connected with the second transfer gear to rotate the first threaded rod, so that the first threaded block drives the second whiteboard to move out of the placement cavity, so as to expand, thereby avoiding the problem that the previous teaching whiteboard cannot be effectively expanded.

[0025] 2. The expandable teaching auxiliary whiteboard proposed by the utility model is compared with the existing teaching whiteboard. If it is necessary to deal with the dust on the surface of the first whiteboard, the push-pull plate can be pulled to drive the connecting shaft forward, so that the T-shaped slider moves to the front end of the T-shaped slide groove, and then the first transmission gear is meshed and connected with the second driven gear, and the second transmission gear is meshed and connected with the power gear, so that the servo motor drives the first driven gear to rotate, so that the second threaded rod is rotated, and the second threaded block drives the movable frame to move, so as to clean the dust on the first whiteboard, avoiding the problem of manual cleaning required by staff in the past.

[0026] 3. The utility model proposes an expandable teaching auxiliary whiteboard. Compared with the existing teaching whiteboard, the teaching whiteboard rotates the first transmission gear and the second transmission gear connected on the push-pull plate, and the objects of the first transmission gear and the second transmission gear being meshed and connected are different. Therefore, the first threaded rod or the second threaded rod can be independently controlled by the servo motor to rotate, so that the servo motor can be independently controlled to extend the second whiteboard or move the movable frame to wipe the first whiteboard, so that the teaching whiteboard can be more energy-efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is an axonometric diagram of an expandable teaching auxiliary whiteboard proposed by the utility model;

[0028] Figure 2 This is a structural schematic diagram of an expandable teaching auxiliary whiteboard proposed by the utility model;

[0029] Figure 3 A front cross-sectional view of an expandable teaching auxiliary whiteboard proposed by the utility model;

[0030] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0031] Legend:

[0032] 1. First whiteboard; 2. Fixed block; 3. Movable frame; 4. Brush plate; 5. Second whiteboard; 6. Fixed plate; 7. Tarpaulin; 8. First driven gear; 9. Second driven gear; 10. Connecting column; 11. Conveying gear; 12. Push-pull plate; 13. Connecting shaft; 14. First transfer gear; 15. Servo motor; 16. Mounting cavity; 17. Side plate; 18. Movable slider; 19. Movable slide groove; 20. First threaded rod; 21. Movable slider; 22. Limiting slide groove; 23. Placement cavity; 24. Limiting slider; 25. Movable cavity; 26. First threaded block; 27. Mounting groove; 28. Second threaded rod; 29. ​​Second transfer gear; 30. T-shaped slider; 31. T-shaped slide groove; 32. Fixed slider; 33. Second threaded block; 34. Fixed slide groove; 35. Power gear; 36. Connecting gear. DETAILED DESCRIPTION

[0033] 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.

[0034] Reference Figure 1-4 , an embodiment provided by the utility model comprises a first whiteboard 1, a mounting cavity 16 is provided at the front end inside the first whiteboard 1, a placement cavity 23 is provided at the rear end inside the first whiteboard 1, a second whiteboard 5 is provided inside the placement cavity 23, a limiting slide groove 22 is provided at the upper end and the lower end of the placement cavity 23, a limiting slider 24 is fixedly connected to the front end of the upper surface and the lower surface of the second whiteboard 5, a movable cavity 25 is provided inside the second whiteboard 5, a first threaded block 26 is fixedly connected to the front end of the inner wall of the movable cavity 25, a servo motor 15 is fixedly connected to one side of the lower end inside the mounting cavity 16, a power gear 35 is fixedly connected to the output end of the servo motor 15, a side plate 17 is provided at the rear end of the power gear 35, a connecting gear 36 is rotatably connected to the rear end outer wall of the side plate 17, a first threaded rod 20 is fixedly connected to the rear end outer wall of the connecting gear 36, and the first threaded rod 20 passes through the mounting cavity 16 and the placement cavity 23 to the movable cavity 25;

[0035] A connecting shaft 13 is provided in the middle of the installation cavity 16, and the front and rear ends of the shaft body of the connecting shaft 13 are respectively sleeved with the first transmission gear 14 and the second transmission gear 29, the front end outer wall of the connecting shaft 13 is rotatably connected with the push-pull plate 12, the upper end of the connecting shaft 13 is provided with a second driven gear 9, the rear end outer wall of the second driven gear 9 is fixedly connected with a connecting column 10, the rear end outer wall of the connecting column 10 is fixedly connected with a conveying gear 11, the upper end of the second driven gear 9 is meshedly connected with the first driven gear 8, a mounting groove 27 is provided on the upper surface of the first whiteboard 1, and the inside of the mounting groove 27 is rotatably connected with a second threaded rod 28, the front end outer wall of the second threaded rod 28 penetrates the mounting groove 27 to the installation cavity 16 and is fixedly connected with the first driven gear 8, the shaft of the second threaded rod 28 is sleeved with a second threaded block 33, the outer walls on both sides of the second threaded block 33 are fixedly connected with fixed sliders 32, and the inner walls on both sides of the mounting groove 27 are provided with fixed slide grooves 34;

[0036] A movable slide groove 19 is provided on the lower surface of the first whiteboard 1, a movable slide rod 21 is provided inside the movable slide groove 19, a movable slider 18 is sleeved on the rod body of the movable slider 21, a movable frame 3 is fixedly connected to the upper surface of the second threaded block 33 and the lower surface of the movable slider 18, a fixed plate 6 is fixedly connected to the rear end of the upper surface of the first whiteboard 1, a tarpaulin 7 is fixedly connected to the front end outer wall of the fixed plate 6, a T-shaped slider 30 is rotatably connected to the middle part of the shaft body of the connecting shaft 13, and a T-shaped slide groove 31 is provided at the upper end of the mounting cavity 16;

[0037] Compared with the existing teaching whiteboard, the teaching whiteboard rotates the first transfer gear 14 and the second transfer gear 29 connected on the push-pull plate 12, and the objects of the meshing connection between the first transfer gear 14 and the second transfer gear 29 are different, so that the first threaded rod 20 or the second threaded rod 28 can be independently controlled by the servo motor 15 to rotate, so that the servo motor 15 can be independently controlled to extend the second whiteboard 5 or move the movable frame 3 to wipe the first whiteboard 1, so that the teaching whiteboard can be more energy-efficient.

[0038] A plurality of fixing blocks 2 are fixedly connected to one side of the upper surface and the lower surface of the first whiteboard 1. By fixing a plurality of fixing blocks 2 to one side of the upper surface and the lower surface of the first whiteboard 1, the first whiteboard 1 can be installed more conveniently. The limiting sliders 24 are slidably connected inside the limiting slide grooves 22. By sliding the limiting sliders 24 inside the limiting slide grooves 22, the limiting can be better performed. The second whiteboard 5 is slidably connected to the placement cavity 23. By sliding the second whiteboard 5 to the placement cavity 23, the second whiteboard 5 can be better stored. The end of the tarpaulin 7 away from the fixing plate 6 is fixedly connected to the second threaded block 33. By fixing the end of the tarpaulin 7 away from the fixing plate 6 to the second threaded block 33, To better prevent dust from entering the installation cavity 16, the fixed sliders 32 are all slidably connected inside the fixed slide grooves 34, and the second threaded block 33 can be better limited by the fixed sliders 32 being slidably connected inside the fixed slide grooves 34. The T-shaped slider 30 is slidably connected inside the T-shaped slide grooves 31, and the first transfer gear 14 and the second transfer gear 29 can be better engaged with different gears respectively by the T-shaped slider 30 being slidably connected inside the T-shaped slide grooves 31. A brush plate 4 is fixedly connected to the outer wall of one side of the movable frame 3 close to the first whiteboard 1, and dust on the surface of the first whiteboard 1 can be better cleaned by the brush plate 4 being fixedly connected to the outer wall of one side of the movable frame 3 close to the first whiteboard 1.

[0039] Working principle: First, fix the first whiteboard 1 on the wall through the fixing block 2. When the second whiteboard 5 needs to be moved out of the placement cavity 23, the push-pull plate 12 can be pushed to make the connecting shaft 13 push the T-shaped slider 30 to the rear end of the T-shaped slide groove 31, so that the power gear 35 is meshed and connected with the first transfer gear 14, and the connecting gear 36 is meshed and connected with the second transfer gear 29. Then, start the servo motor 15, so that the servo motor 15 drives the power gear 35 to rotate, thereby meshing and connecting with the first transfer gear 14 through the power gear 35, and then the first transfer gear 14 is fixedly connected to the connecting shaft 13, so that the second transfer gear 29 is rotated, and then the connecting gear 36 is meshed and connected with the second transfer gear 29 to rotate the first threaded rod 20, so that the first threaded block 26 drives the second whiteboard 5 to move out of the placement cavity 23 and move. When the dust on the surface of the first whiteboard 1 needs to be processed, the push-pull plate 12 can be pulled to drive the connecting shaft 13 forward, so that the T-shaped slide block 30 moves to the front end of the T-shaped slide groove 31, and then the first transmission gear 14 is meshed and connected with the second driven gear 9, and the second transmission gear 29 is meshed and connected with the power gear 35, so that the servo motor 15 drives the first driven gear 8 to rotate, thereby rotating the second threaded rod 28, so that the second threaded block 33 drives the movable frame 3 to move. During the movement of the movable frame 3, the movable slide block 18 moves on the movable slide rod 21, so that the movable frame 3 can be limited, so that the dust on the first whiteboard 1 can be cleaned, and the tarpaulin 7 can be effectively prevented from entering the installation cavity 16.

[0040] 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. An expandable teaching auxiliary whiteboard, comprising a first whiteboard (1), characterized in that: The front end of the first whiteboard (1) is provided with an installation cavity (16), the rear end of the first whiteboard (1) is provided with a placement cavity (23), a second whiteboard (5) is arranged inside the placement cavity (23), the upper end and the lower end of the placement cavity (23) are provided with limit slide grooves (22), the front ends of the upper surface and the lower surface of the second whiteboard (5) are fixedly connected to limit slide blocks (24), the second whiteboard (5) is provided with an activity cavity (25), the front end of the inner wall of the activity cavity (25) is fixedly connected to a first screw A block (26), a servo motor (15) is fixedly connected to one side of the lower end of the installation cavity (16), an output end of the servo motor (15) is fixedly connected to a power gear (35), a rear end of the power gear (35) is provided with a side plate (17), a rear end outer wall of the side plate (17) is rotatably connected to a connecting gear (36), a rear end outer wall of the connecting gear (36) is fixedly connected to a first threaded rod (20), and the first threaded rod (20) passes through the installation cavity (16) and the placement cavity (23) to the movable cavity (25); A connecting shaft (13) is provided in the middle of the installation cavity (16), and the front end and rear end of the connecting shaft (13) are respectively sleeved with a first transmission gear (14) and a second transmission gear (29), and the front end outer wall of the connecting shaft (13) is rotatably connected to a push-pull plate (12), and the upper end of the connecting shaft (13) is provided with a second driven gear (9), and the rear end outer wall of the second driven gear (9) is fixedly connected to a connecting column (10), and the rear end outer wall of the connecting column (10) is fixedly connected to a conveying gear (11), and the upper end of the second driven gear (9) is meshingly connected to A first driven gear (8), an upper surface of the first whiteboard (1) is provided with a mounting groove (27), a second threaded rod (28) is rotatably connected inside the mounting groove (27), a front end outer wall of the second threaded rod (28) penetrates the mounting groove (27) to the mounting cavity (16) and is fixedly connected to the first driven gear (8), a second threaded block (33) is sleeved on the rod body of the second threaded rod (28), both side outer walls of the second threaded block (33) are fixedly connected with fixed sliding blocks (32), and both side inner walls of the mounting groove (27) are provided with fixed sliding grooves (34); A movable slide groove (19) is provided on the lower surface of the first whiteboard (1), a movable slide rod (21) is arranged inside the movable slide groove (19), a movable slider (18) is sleeved on the rod body of the movable slider (21), the upper surface of the second threaded block (33) and the lower surface of the movable slider (18) are both fixedly connected to the movable frame (3), the rear end of the upper surface of the first whiteboard (1) is fixedly connected to a fixed plate (6), the front end outer wall of the fixed plate (6) is fixedly connected to a tarpaulin (7), the middle part of the shaft body of the connecting shaft (13) is rotatably connected to a T-shaped slider (30), and the upper end of the mounting cavity (16) is provided with a T-shaped slide groove (31).

2. The expandable teaching auxiliary whiteboard according to claim 1, characterized in that: A plurality of fixing blocks (2) are fixedly connected to one side of the upper surface and the lower surface of the first whiteboard (1).

3. The expandable teaching auxiliary whiteboard according to claim 1, characterized in that: The limiting sliding blocks (24) are all slidably connected inside the limiting sliding grooves (22).

4. The expandable teaching auxiliary whiteboard according to claim 1, characterized in that: The second whiteboard (5) is slidably connected to the placement cavity (23).

5. The expandable teaching auxiliary whiteboard according to claim 1, characterized in that: One end of the tarpaulin (7) away from the fixing plate (6) is fixedly connected to the second threaded block (33).

6. The expandable teaching auxiliary whiteboard according to claim 1, characterized in that: The fixed sliding blocks (32) are all slidably connected inside the fixed sliding grooves (34).

7. The expandable teaching auxiliary whiteboard according to claim 1, characterized in that: The T-shaped sliding block (30) is slidably connected inside the T-shaped sliding groove (31).

8. The expandable teaching auxiliary whiteboard according to claim 1, characterized in that: A brush plate (4) is fixedly connected to an outer wall of one side of the movable frame (3) close to the first whiteboard (1).

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