Dust-proof teaching blackboard

A blackboard and blackboard eraser technology, applied in the field of teaching blackboards, can solve problems such as inability to reduce chalk dust, and achieve the effect of preventing floating into the air

Inactive Publication Date: 2018-12-18
张欣欣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention provides a teaching blackboard that can make the main board and the sub-board flush, but this blackboard cannot reduce the chalk dust floating into the air when the blackboard is wiped

Method used

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  • Dust-proof teaching blackboard

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0030] Combine below Figure 1-8 Describe this embodiment, a dust-proof teaching blackboard of the present invention, comprising a blackboard body 1, an upper guide rail 2, a lower guide rail 3 and a sliding blackboard eraser 4, which can reduce chalk dust floating into the air when erasing chalk characters.

[0031] The upper guide rail 2 and the lower guide rail 3 are respectively fixedly connected to the upper and lower ends of the blackboard body 1, the axes of the upper guide rail 2 and the lower guide rail 3 are parallel to each other, and the upper and lower ends of the sliding blackboard eraser 4 are respectively slidably connected On the upper guide rail 2 and the lower guide rail 3. The sliding blackboard eraser 4 can slide left and right on the blackboard body 1 along the upper guide rail 2 and the lower guide rail 3 .

[0032] The sliding blackboard eraser 4 includes a water tank 4-1, a handle 4-2, a sliding block 4-3, a wiping body 4-4 and a water-absorbing strip...

specific Embodiment approach 2

[0033] Combine below Figure 1-8 This embodiment is described, and this embodiment is a further description of the first embodiment. The dustproof teaching blackboard also includes a clean wiping board 5 , which is connected to one side of the sliding blackboard eraser 4 , and which is in contact with the upper surface of the blackboard body 1 . The connection of net erasing board 5 and sliding blackboard eraser 4 can be fixed connection, also can be detachable fixed connection, and its purpose is to make net erasing board 5 can move on blackboard body 1 along with sliding blackboard eraser 4. Clean wiping board 5 does not contain water, can further wipe blackboard body 1 after wiping body 4-4 wipes blackboard body 1, both can remove the water of blackboard body 1 surface, can make blackboard body 1 surface wipe again more clean.

specific Embodiment approach 3

[0034] Combine below Figure 1-8 This embodiment is described, and this embodiment is a further description of the first embodiment. The dustproof teaching blackboard also includes a clean wiping board 5, two sliding blackboard erasers 4 are provided, and the clean wiping board 5 is connected between the two sliding blackboard erasers 4. contact with the upper surface of the blackboard body 1. The connection of net erasing board 5 and sliding blackboard eraser 4 can be fixed connection, also can be detachable fixed connection, and its purpose is to make net erasing board 5 can move on blackboard body 1 along with sliding blackboard eraser 4. Clean wiping board 5 does not contain water, can further wipe blackboard body 1 after wiping body 4-4 wipes blackboard body 1, both can remove the water of blackboard body 1 surface, can make blackboard body 1 surface wipe again more clean. Both ends of the clean wiper 5 are connected with a sliding blackboard eraser 4, thereby ensuring ...

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PUM

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Abstract

The invention discloses a dust-proof teaching blackboard. The dust-proof teaching blackboard can reduce chalk dust which floats in air when words written with chalk are erased away. An upper guiding rail and a lower guiding rail are connected to the upper end and the lower end of a blackboard body correspondingly; the axes of both the upper guiding rail and the lower guiding rail are parallel to each other; and a sliding blackboard eraser is slideably connected to the upper guiding rail and the lower guiding rail. The sliding blackboard eraser comprises a water tank, a handle, sliding blocks,an erasing body and water absorbing strips, wherein the water tank is provided with a water inlet and a water cover; the water cover is in threaded connection to the water inlet; the handle is fixedlyconnected to the water tank; the number of the sliding blocks is two; the two sliding blocks are fixedly connected to the upper end and the lower end of the water tank correspondingly; sliding grooves are formed in the two sliding blocks correspondingly; the two sliding blocks are slideably connected to a transverse sliding rod I and a transverse sliding rod II correspondingly through the corresponding sliding grooves; the erasing body is fixedly connected to the water tank and located on one side close to the blackboard body; and one ends of the plurality of water absorbing strips are located in the water tank, and the other ends of the plurality of water absorbing strips are located in the erasing body and make contact with the erasing body.

Description

technical field [0001] The invention relates to the field of teaching blackboards, in particular to a dust-proof teaching blackboard. Background technique [0002] For example, a blackboard for teaching with the patent No. 201610406689.9 includes a bracket with a main board and a sub-board, and a guide groove is arranged on the bracket. The right end of the guide groove section is an inclined guide groove section that gradually guides and extends forward from left to right. The sub-board is provided with the right travel wheel of the sub-board and the left travel wheel of the sub-board. The length of the main linear guide groove section is longer than that of the left travel wheel of the sub-board. , The distance between the right travel wheels of the sub-board, the right side of the groove wall of the inclined guide groove section is provided with a right travel wheel passing groove only for the right travel wheel of the sub-board to pass in the left and right direction, du...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B43L21/02B43L1/04
Inventor 张欣欣
Owner 张欣欣
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