Movable teaching board with height graded adjustment function

Abstract

A movable teaching board with a height graded adjustment function comprises a bottom board. Four rolling wheels are fixedly connected to the lower side of the bottom board. A main board is connected to the upper side of the bottom board through a height graded adjustment device. A hidden slot with an upward opening is formed in the main board. A hidden plate is arranged in the hidden slot. A threaded slot with a downward opening is formed in the lower portion of the hidden plate. A threaded rod is connected into the threaded slot in a threaded manner. The bottom end of the threaded rod is rotationally connected with the bottom in the hidden slot. A first bevel gear is fixedly connected to the lower portion of the threaded rod, the left side of the first bevel gear is engaged with a secondbevel gear, a rotary shaft is fixedly connected to the left end of the second bevel gear, the left end of the rotary shaft penetrates the main board, and a handle is fixedly connected to the outer endof the rotary shaft. The movable teaching board has the beneficial effects that a rotating rod drives a rotating wheel to rotate counterclockwise, an adjusting rod can be made to sequentially enter each right-angled slot, and as the depth of the right-angled slots is increased, the height of the main board is reduced, so that the height of the main board can be adjusted.

Description

technical field [0001] The invention relates to the technical field of teaching boards, in particular to a mobile teaching board with a height adjustment function. Background technique [0002] Teaching board, that is, the utensils used for writing demonstrations in the education industry. Usually, teaching boards are boards placed in classrooms or conference rooms. The content is written with chalk or water-based pens to play the role of explaining and demonstrating. Therefore, the importance of teaching boards in the classroom is self-evident. [0003] Chinese patent (CN205358872U) discloses a political teaching board. The patent is equipped with a display board and a writing board. The writing board is connected to the chute, and the handle can be pulled as needed to slide the writing board to ensure that students in all positions can see the writing. For the content written on the board, an eraser is set in front of the writing board, and the eraser is connected to the ...

AI Technical Summary

Problems solved by technology

[0004] This patent has many functions, but it also has some shortcomings. The mobile teaching board is widely used due to its small size, but at the same time it is also a short board. It is inconvenient to use. In many cases, one side cannot display the content that needs to be displayed at all, which reduces the learning efficiency of learners. At the same time, the height adjustment method of the teaching board is inconvenient, and it is difficult to meet the needs of use.

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