CN2813330Y - Non-dust blackboard eraser - Google Patents

Abstract

The utility model relates to a blackboard eraser, particularly a blackboard eraser which can not generate flying dust when a blackboard is erased. A non-dust blackboard eraser comprises an eraser board and eraser hair, wherein the eraser hair is fixed on the eraser board. The non-dust blackboard eraser also comprises an eraser box and an inserting board, wherein the eraser board is positioned at the upper part of the eraser box and is provided with a plurality of dust leaking holes. The inner part of the eraser box is in a hollow cavity structure, one side face of the eraser box is horizontally provided with an inserting board mouth, the inner side of the side face which corresponds to the inserting board mouth is provided with a groove which is in accordance with the inserting board mouth and the inserting board is inserted in the groove via the inserting board mouth. The periphery of the eraser board at the upper part of the eraser box is provided with a dust blocking board made of flexible material, and the height of the dust blocking board is greater than or equal to the length of the eraser hair; thus, the utility model can erase chalk words on the blackboard and can not generate flying chalk dust.

Description

Non-dust eraser

Technical field

The utility model relates to a kind of blackboard eraser, relates in particular to a kind of blackboard eraser that can not produce dust from flying when wiping the examination blackboard.

Background technology

Now, school teacher all can use blackboard in teaching process on class, the outline and the emphasis of imparting knowledge to students chalked down on the blackboard.Because blackboard has certain write area, and the time of a class, teacher has many things to write sometimes, and often this write area can be not enough, the content of writing in the past can only be wiped, and writes new thing again.When wiping the original content of examination, will use blackboard eraser.At present, our used blackboard eraser substantially all be a wiping material of on the base of blackboard eraser, fixing a lint as snag, with this snag the letter written with chalk of being write on the blackboard is wiped.Because wiping chalk dust try is a kind of dust body, teacher is wiping when trying blackboard, and chalk dust can be floating in air, fly upward, and not only cause the pollution of classroom environment, and the suction of chalk dust also can cause damage to the health of human body.Sometimes, teacher erases the board with wet cloth in order to reduce flying up of chalk dust, though reduced flying upward of chalk dust, blackboard is also wiped wet, write again, must wait blackboard to do later on, is not very convenient.

Summary of the invention

Technical problem to be solved in the utility model is that a kind of non-dust eraser is provided on the basis of original blackboard eraser, and this blackboard eraser can not only be wiped the letter written with chalk on the blackboard, and can not produce flying upward of chalk dust.

For solving the problems of the technologies described above, a kind of non-dust eraser of the present utility model, comprise wiping board and snag, snag is fixed on the wiping board, this non-dust eraser also comprises wipes box and plate, wiping board is positioned at the top of wiping box, and have a plurality of powder leakage holes, wiping box inside is cavity structure, the chalk dust under wiping can enter from powder leakage hole and wipe the box, wipe side level of box and have the plate mouth, have and the consistent groove of this plate mouth with this plate mouth corresponding side surface inboard, plate is in the plate mouth inserts groove; Wipe the powder blocking plate that is provided with soft materials all around of box top wiping board, around blackboard eraser, flying out to prevent chalk dust.

When trying blackboard in order to guarantee to wipe, powder blocking plate can really play barrier effect to chalk dust, and the height of used powder blocking plate is greater than the length that equals snag.

Because non-dust eraser of the present utility model is the wiping box of cavity structure with the wiping board base designs of original blackboard eraser, on the wiping board of wiping box top, offer a plurality of powder leakage holes, in wiping box, increased a plate simultaneously.With this blackboard eraser blackboard wiping the time, the chalk dust under wiping can enter from powder leakage hole and wipe in the box like this, and after plate was extracted out, chalk dust drops down onto wiped the box bottom, then plate is plugged, and the chalk dust under wiping is sealed, and blackboard eraser just can reuse; Chalk dust in wiping box run up to a certain amount of after, extract plate out, chalk dust is poured out from wipe box.Wipe box top wiping board around increased powder blocking plate after, do not fall into being scattered and flying into aerial of chalk dust in the powder leakage hole in the time of can stoping wiping effectively.Thus, adopt blackboard eraser of the present utility model, when carrying out the blackboard wiping, can not produce flying upward of chalk dust.

Description of drawings

The utility model is described in further detail below in conjunction with drawings and embodiments:

Fig. 1 is a kind of non-dust eraser schematic diagram of the present utility model, and Fig. 2 is a kind of non-dust eraser side view of the present utility model.

The specific embodiment

Fig. 1 and Fig. 2 are a kind of non-dust eraser schematic diagram of the present utility model and side view.From Fig. 1 and Fig. 2 as can be known, a kind of non-dust eraser, comprise wiping board 1 and snag 2, snag 2 is fixed on the wiping board 1, and this non-dust eraser also comprises wipes box 3 and plate 4, wiping board 1 is positioned at the top of wiping box 3, and have a plurality of powder leakage holes 5, wiping box 3 inside is cavity structure, wipes 3 one side levels of box and has plate mouth 6, have the groove 7 consistent with this plate mouth with these plate mouth 6 corresponding side surface inboards, plate 4 inserts in the groove 7 through plate mouth 6; Wipe the powder blocking plate 8 that is provided with soft materials all around of box 3 top wiping boards 1.The height of powder blocking plate 8 is more than or equal to the length of snag 2.

Claims (2)

1, a kind of non-dust eraser, comprise wiping board and snag, snag is fixed on the wiping board, it is characterized in that this non-dust eraser also comprises wiping box and plate, wiping board is positioned at the top of wiping box, and has a plurality of powder leakage holes, wiping box inside is cavity structure, wipe side level of box and have the plate mouth, have and the consistent groove of this plate mouth with this plate mouth corresponding side surface inboard, plate is in the plate mouth inserts groove; Wipe the powder blocking plate that is provided with soft materials all around of box top wiping board.

2, non-dust eraser according to claim 1 is characterized in that the length of the height of powder blocking plate more than or equal to snag.

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