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Novel blackboard

A new type of blackboard technology, applied in the field of blackboards, can solve the problems of small groove area, inconvenient cleaning of chalk powder, affecting classroom hygiene, etc., and achieves the effect of easy powder cleaning, convenient and fast cleaning

Inactive Publication Date: 2014-03-05
张艳
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The blackboard is a necessary facility for teaching. The powder collection groove under the ordinary blackboard is fixed and cannot be adjusted. The chalk powder is not easy to clean, and the groove area is relatively small. The chalk powder is easy to fall on the ground, which affects classroom hygiene.

Method used

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  • Novel blackboard

Examples

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Embodiment Construction

[0009] Such as figure 1 As shown, the powder baffle 1 of the present invention is inserted in the elongated opening 3 at the bottom of the blackboard 2, and a powder wipe 4 is installed in the elongated opening 3 on the side above the powder baffle 1, and the powder wipe 4 can be Sliding on the powder baffle 1 is convenient for cleaning. The support rod 5 is installed on the blackboard 1 below the powder baffle 1. A block 6 is arranged above the outer end of the support rod 5. The two ends of the roller 7 are placed on the support rod 5. Support the powder baffle 1 on the top. Through the above settings, the powder baffle 1 can slide and expand in the elongated opening 3, and the roller 7 is convenient for the powder baffle 1 to slide.

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PUM

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Abstract

The invention discloses a novel blackboard. The novel blackboard is characterized in that a dust baffle is inserted in a long-strip-shaped opening in the bottom of the blackboard, a dust eraser is installed in a long-strip-shaped opening in one side above the dust baffle, a supporting rod is installed on the portion, below the dust baffle, of the blackboard, stop dogs are arranged above the outer ends of the supporting rod, and the two ends of a roller shaft are placed on the supporting rod to support the dust baffle. Through the arrangement, a dust groove can be stretched and retracted freely and adjusted according to use conditions, dust can be cleared away conveniently with the dust eraser, and the novel blackboard is more convenient and faster to use and clean.

Description

technical field [0001] The invention relates to a blackboard, in particular to a blackboard with a freely expandable powder tank. Background technique [0002] The blackboard is a necessary facility for teaching. The powder collection groove under the ordinary blackboard is fixed and cannot be adjusted. The chalk powder is not easy to clean, and the groove area is relatively small. The chalk powder is easy to fall on the ground, which affects classroom hygiene. Contents of the invention [0003] The object of the present invention is to provide a blackboard with freely expandable powder tank. [0004] In order to achieve the above object, the powder baffle of the present invention is inserted into the elongated opening at the bottom of the blackboard, a powder wipe is installed in the elongated opening on the side above the powder baffle, and the support rod is installed on the powder baffle On the blackboard below, a block is set above the outer end of the support rod, a...

Claims

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Application Information

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IPC IPC(8): B43L1/04B43L21/00
Inventor 张艳
Owner 张艳