CN2361484Y - Chalk dust recoverable blackboard - Google Patents

Abstract

The utility model relates to a novel blackboard which can prevent dust from floating to the air. The utility model is composed of a writing board surface, a rotating device and a chalk brush which are sealed and packaged in an outer housing. The chalk brush can erase writing on the back surface of the writing board surface, and the chalk brush is sealed and packaged in the outer shell, so no powder dust flies into the air, and the powder dust can be collected in the outer housing.

Description

Dustless laborsaving recovery chalk dust type blackboard

The utility model relates to a kind of writing blackboard of the usefulness of imparting knowledge to students, and especially can allow chalk dust not waft in air, and the labour-saving blackboard.

At present, known chalk writing blackboard and eraser separate, and when wiping writing, chalk dust flies upward everywhere, is unfavorable for teachers and students' health, and can not reclaim chalk dust, again effort, time-consuming.

The purpose of this utility model is that a kind of new-type chalk writing blackboard will be provided, and it integrates clipboard and eraser, and the chalk dust that is produced in the time of preventing to erase the board efficiently flies upward everywhere.And chalk dust can be collected in together, recycle, simultaneously laborsaving again.

The purpose of this utility model is achieved in that clipboard adopts flexible banded structure and top two gears, constitutes the structure as tank track.Write in the front of writing panel, simultaneously, will have the one side of writing to forward the back side gradually to by the gear rotation and wipe.And whole clipboard and rotating shaft are encapsulated in the shell fully, and the user can only see the front that it is write, so chalk dust can not fly upward everywhere, to certain the time, shell can be opened, and chalk dust is scanned out, and recycle.

Owing to adopt above scheme, chalk dust is not flown upward in the air, useful health, environmental protection, and chalk dust can also be reclaimed energy savings.Simultaneously, adopt overall package, outward appearance is succinct, moves conveniently.

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the overall appearance figure of present embodiment.

Fig. 2 is the sectional view of present embodiment.

Fig. 3 is the positive view of present embodiment.

Fig. 4 is the cut-away view of present embodiment.

4. rotating shafts 5. of 1. shells, 2. clipboard faces, 3. driving-belts are supported plank 6. bearings 7. erasers 8. gears 9. and are supported batten among the figure

In Fig. 1, shell (1) is sealed clipboard face (2) all around, and shell (1) can be opened simultaneously, as shown in Figure 4.Pulling driving-belt (3) can make clipboard face (2) cycle rotation.In Fig. 2, (2) are the clipboard face, and (5) are passive support planks, and (6) are bearing, and (7) are eraser, are installed in shell (1) inner surface, and rotate for gear can drive (2) (8).

When needing to wipe when write full writing on clipboard face (2) after, pulling (3) can make (2) to rotate, and the writing of writing will be wiped by (7) overleaf, and dust is closed in the shell (1), and so circulation just can be reused down.In use long after, can resemble shown in Figure 4ly, open shell, change eraser or cleaning chalk dust.Simultaneously, adopt the structure of plate face tilt, under the gravity effect of clipboard face (2) and gear (8) support plank (5), guarantee the quality of wiping writing.

Claims (1)

1. one kind does not allow dust waft to airborne blackboard, this device is made of in the enclosure banded clipboard face, eraser, tumbler encapsulation, it is characterized in that: the rotation capable of circulation of clipboard face, eraser is installed in the behind of clipboard face, integrates eraser and clipboard.

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