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Round blackboard easy to erase
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A blackboard and circular technology, which is applied in the field of easy-to-erasable circular blackboards, can solve the problems of low erasing efficiency, and achieve the effects of reasonable structural design, wide application, and avoiding rotation
Inactive Publication Date: 2018-08-24
靳璟瑞
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Abstract
Description
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Problems solved by technology
[0003] In view of the above-mentioned defects in the prior art, the present invention proposes an easy-to-erasable circular blackboard, the purpose of which is to solve the problem of low erasing efficiency caused by a single movement of the blackboard or blackboard eraser
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Embodiment 1
[0035] Such as Figures 1(a) to 1(c) , Figures 2(a) to 2(e) As shown, in the easy-to-erasable round blackboard of the present invention, the blackboard 1 is set as a circle and rotates along the center of the circle; the blackboard eraser 6 is set to be retractable and moves back and forth from the center to the edge. When the above-mentioned blackboard 1 rotates and the eraser 6 moves simultaneously, the writing on the blackboard 1 can be quickly erased, and the efficiency is greatly improved compared with the prior art.
[0036] The easy-to-erasable circular blackboard of the present invention includes a blackboard 1, a fixed bracket 2 and an eraser 6, the eraser 6 is fixed above the blackboard 1 by the fixed bracket 2, and the eraser 6 faces the writing surface of the blackboard 1.
[0037] Such as image 3 As shown, the present invention also includes a control mechanism 7, a telescopic mechanism 3, a lifting mechanism and a rotating mechanism 5, the control mechanism 7 ...
Embodiment 2
[0047] Such as Figure 5 As shown, a plurality of retractable mechanisms 3 with blackboard erasers 6 are provided on the side of the blackboard 1 . According to the actual area of the blackboard 1, a plurality of erasers 6 are arranged on the side. During the movement of the blackboard 1, the plurality of erasers 6 reciprocate at the same time, and are responsible for erasing handwriting in different circular intervals. The effect is better, and the eraser 6 is replaced. The number of times decreased accordingly.
Embodiment 3
[0049] Such as Figure 6 As shown, the easy-to-erasable circular blackboard of the present invention can be installed on the ground through the base 16 in addition to being installed on the wall, and is used in meeting room occasions.
[0050] pass Figure 6It can be seen that the telescopic mechanism 3 is located at the bottom of the blackboard 1, and the telescopic mechanism 3, the lifting mechanism 4, the rotating mechanism 5 and the control mechanism 7 are all fixed on the base 16 through the bracket. When the blackboard 1 rotates, the telescopic mechanism 3 shrinks and reciprocates back and forth, and the erasing effect is good. According to actual needs, sliding wheels are installed below the base 16, which is not limited to specific occasions and can be moved as needed.
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Abstract
The invention relates to a round blackboard easy to erase and belongs to the technical field of teaching appliances. By means of the round blackboard, the problem that erasing efficiency is low due tosingular motion of a blackboard or a board eraser is solved. The round blackboard comprises a blackboard body, a fixing support and the board eraser. The board eraser is fixed above the blackboard body through the fixing support and faces the writing face of the blackboard body. The round blackboard further comprises a control mechanism, an extending-and-contracting mechanism, an ascending-and-descending mechanism and a rotating mechanism. The control mechanism and the rotating mechanism are located below the blackboard body. The extending-and-contracting mechanism is connected with the fixing support and located above the blackboard body. The ascending-and-descending mechanism is connected with the extending-and-contracting mechanism and located at the side of the blackboard body. A board body of the blackboard body is of a round structure. When the blackboard body is driven by the rotating mechanism to perform circular rotation, the board eraser which is closely attached to the blackboard body is driven by the extending-and-contracting mechanism to perform reciprocating motion. The motion track, on the blackboard body, of the board eraser is in a spiral-line shape. The round blackboard is driven by a driving motor, the board eraser is driven by the extending-and-contracting mechanism, and the two types of motion are conducted at the same time; manpower is saved; and the round blackboard is high in automation degree and good in erasing effect.
Description
technical field [0001] The invention relates to an easy-to-wipe circular blackboard, which belongs to the technical field of teaching appliances. Background technique [0002] Existing blackboard adopts rectangular structure mostly. The advantage of adopting a rectangular structure is that you can write as much teaching content as possible. However, in the actual teaching process, the content written on the blackboard is very limited, and it is seldom that it is completely filled. Therefore, the use of a rectangular blackboard limits the possibility of automatic erasure of handwriting. At present, the automatic erasing of the blackboard is relatively simple, and the blackboard is fixed and the eraser is movable, or the eraser is different and the blackboard is turned along the rotating shaft. These two methods have low erasing efficiency. Contents of the invention [0003] Aiming at the above-mentioned defects in the prior art, the present invention proposes an easy-to-e...
Claims
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Application Information
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