Blackboard and blackboard device

A blackboard and power device technology, applied in the field of teaching equipment, can solve the problems of reducing the service life of the blackboard, wasting time and energy, and generating noise, etc., and achieve the effects of increasing the service life, good visual effect, and reducing noise

Inactive Publication Date: 2017-06-13
WUHAN POLYTECHNIC UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, in order to have a large enough writing area, the blackboard is often designed as a rectangle, but the blackboard has a large horizontal span, and the teacher needs to walk back and forth during the writing process, which is time-consuming and laborious
However, the blackboards can be chan

Method used

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  • Blackboard and blackboard device
  • Blackboard and blackboard device
  • Blackboard and blackboard device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] refer to figure 1 , the figure shows a blackboard 100 provided by this embodiment, which includes a lower guide plate 110, several blackboard bodies 120, a power unit and a transmission chain 140 connecting end to end.

[0044] A channel connected end to end is opened on the lower guide plate 110, and the transmission chain 140 is arranged in the channel. The power device is in driving connection with the transmission chain 140, and is used to control the movement of the transmission chain 140 along the channel.

[0045] Also refer to figure 2 , the transmission chain 140 is provided with several first pins 171 at intervals, one end of the first pins 171 is connected with the end of the blackboard body 120 close to the lower guide plate 110, the other end of the first pins 171 stretches into the channel and connects with the transmission chain 140 connect. When the power device drives the transmission chain 140 to move along the channel, the first pin body 171 drive...

Embodiment 2

[0061] refer to Figure 5 , the figure shows a blackboard device 200 provided in this embodiment, which includes a blackboard 100 in Embodiment 1 and a lifting frame 210 . The lifting frame 210 includes two, which are respectively arranged on two sides of the blackboard 100 .

[0062] refer to Image 6 , the lifting frame 210 includes a socket, a first frame body 211 and a second frame body 212 , and the second frame body 212 is connected to the blackboard 100 . The second frame body 212 is slidably connected to the first frame body 211 in the length direction. The first frame body 211 and the second frame body 212 include several through holes arranged at intervals in the vertical direction, and the plug pins 213 can selectively cooperate with the through holes. The bolt 213 passes through the first frame body 211 and the second frame body 212 successively through the through hole on the side away from the second frame body 212 from the first frame body 211, and is restric...

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PUM

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Abstract

The invention relates to the field of teaching aids, in particular to a blackboard and a blackboard device. The blackboard comprises a lower guide plate, a power device, a plurality of blackboard bodies and transmission chains in end-to-end connection. A passage is arranged in the lower guide plate, and the transmission chains are arranged in the passage. The blackboard has the advantages that the power device controls the transmission chains to drive the blackboard bodies to move, and accordingly the blackboard is excellent in visual effect and high in safety; the blackboard bodies are arranged in a non-contact manner to reduce collision during use, so that noise is reduced and the service life of the blackboard prolonged. The blackboard device comprises the blackboard and lifting frames, wherein the lifting frames erected on two sides of the blackboard control lifting of the blackboard. The blackboard device with a height adjusting function is simple in structure and beneficial to popularization.

Description

technical field [0001] The invention relates to the field of teaching aids, in particular to a blackboard and a blackboard device. Background technique [0002] The blackboard is a common teaching tool in teaching. Writing on the blackboard with chalk is beneficial to wiping and making it relatively simple. [0003] In the prior art, the blackboard is often designed as a rectangle in order to have a large enough writing area, but the blackboard has a large horizontal span, and the teacher needs to walk back and forth during the writing process, which is time-consuming and laborious. However, the blackboards can be changed at present, and the positions between the blackboards can be replaced by pushing and pulling by the teacher. However, due to inertia, there will be impacts and noises between the blackboards. In addition, the collision will reduce the service life of the blackboards and affect the smooth progress of teaching. . Contents of the invention [0004] The fir...

Claims

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Application Information

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IPC IPC(8): B43L1/04A47B97/04
CPCA47B97/04B43L1/04
Inventor 孙亮波桂慧
Owner WUHAN POLYTECHNIC UNIVERSITY
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