CN2109320U - Chalk powder suction blackboard eraser - Google Patents

Abstract

The utility model relates to a chalk powder suction blackboard eraser which belongs to a teaching aid. The utility model is characterized in that the inner part of a lower box body is provided with two round brushes; the both ends of each round brush are respectively provided with rollers which are provided with roller rubber rings; a wool erasure board is arranged between the two round brushes; a wool felt eraser is arranged below the wool erasure board; the both ends of the wool erasure board are respectively provided with spring pressure boards as integration. The utility model is mainly used for sucking chalk dust, improving environment and preventing air pollution.

Description

Chalk powder suction blackboard eraser

The utility model belongs to the blackboard eraser of a kind of teaching aid, particularly a kind of sucking chalk powder.

At present; in all kinds of schools of China; writing on the blackboard rehearsal process great majority in the teaching process are write on blackboard with common chalk and are finished; writing and figure are attached on the blackboard and show by the lime that constitutes chalk; at present the apparatus that erases the board that generally uses is to be bonded on the plank and a kind of ordinary blackboard eraser made from felt; in the process of erasing the board; because this blackboard eraser can only be wiped writing or figure; chalk dust can not be discharged; thereby cause chalk dust to be scattered or fly upward; cause the air pollution of surrounding environment, damage the healthy of Faculty and Students, make numerous teachers and classmate that institute is worried deeply.

The purpose of the present utility model provides a kind of apparatus that erases the board of energy sucking chalk powder.The utility model is finished like this:

In lower box body, have two parallel round brush arranged side by side, two ends at each round brush have roller respectively, below each roller end axle, has the roller brush shaft locating slot respectively, on roller, have the roller cushion rubber, in the middle of two parallel round brush arranged side by side, have a mao wiping board, below the hair wiping board, have felt and wipe connection, on hair wiping board two ends, has spring bearer plate respectively, the middle part has through hole, is passed from the bottom up by bolt, with nut lower box body, hair wiping board, spring bearer plate is connected as a single entity.

During work, hand takes blackboard eraser that itself and blackboard surface are adjacent to, integral rolling brush, felt are wiped touch panel face simultaneously, and move left and right is done wiping action, at this moment be installed in the box about two integral rolling brush owing to move to rub and rotate, press the moving direction integral rolling brush, hair is wiped, another integral rolling brush divides the chalk dust on the priority contact plate face, because the round brush diameter is bigger than roller, under the pressure of hand, it is crooked that the hair of being longer than roller portion on the round brush is produced, and forms " L " shape, round brush " is scraped chalk dust particle bigger on the blackboard ", " sweep ", carry under one's arms, cleaning enters in the box, adheres on the blackboard tighter, tiny chalk dust can not once be wiped, and " the felt wiping " of being followed up wiped.After the grey hairs such as cleaning engagement, remaining part of being carried under one's arms by last round brush of a part nuzzle up, carried under one's arms by another round brush and to sweep box, the move left and right wiping is just cleaned blackboard so repeatedly, dust all enters in the box, enter the stored ash box that chalk dust in the box falls under gravity into the bottom, open lid then and ash is changed places to discharge finish entire work process.

The utility model has following advantage compared with prior art:

1, owing to increased the suction ash, stores up grey function, use, will overcome surrounding environment and the air pollution problems inherent that to discharge chalk dust when ordinary blackboard eraser uses and cause effectively;

2, volume is little, and is easy to use;

3, most of parts are plastic injection-moulded, are easy to produce in batches, and cost is low, helps promoting the use of.

Concrete structure of the present utility model and embodiment are provided by the following drawings.

Fig. 1 is that the utility model general structure is cutd open and shown schematic diagram;

Fig. 2 is that the utility model A-A cuts open and shows schematic diagram;

Fig. 3 is the utility model round brush schematic diagram;

Fig. 4 is the utility model hair wiping board schematic diagram;

Fig. 5 is the utility model spring bearer plate schematic diagram.

Below in conjunction with accompanying drawing concrete structure of the present utility model and embodiment are described in further detail.

Shown in accompanying drawing 1-5, below lid 8, has lower box body 1, in lower box body 1, have two parallel round brush 2 arranged side by side, two ends at each round brush 2 have roller 4 respectively, roller 4 is connected as a single entity with the end axle, below roller 4 end axles, has roller brush shaft locating slot 10, roller brush shaft locating slot 10 and lower box body 1 are injected into one, on roller 4, has roller cushion rubber 3, main rising increases friction effect, has rectangle hair wiping board 7 in the middle of two parallel round brush 2 arranged side by side, has felt wiping 9 and connect below hair wiping board 7, on hair wiping board 7 two ends, has spring bearer plate 5 respectively, mainly can the adjusting angle effect, can push down the roller shaft effect again, have through hole in spring bearer plate 5 middle parts, pass from lower to upper with bolt 6, with lower box body 1, hair wiping board 7, spring bearer plate 5, fasten as one with nut 11.

Claims (1)

1, a kind of sucking chalk powder blackboard eraser, it comprises lid (8), lower box body (1), it is characterized in that: in lower box body (1), have two parallel round brush arranged side by side (2), has roller (4) respectively at the two ends of each round brush (2), has roller brush shaft locating slot (10) below roller (4) the end axle, on roller (4), has roller cushion rubber (3), having a mao wiping board (7) in the middle of two parallel round brush (2) arranged side by side is connected with following felt wiping (9), has spring bearer plate (5) above the two ends respectively at hair wiping board (7), the middle part has through hole, has nut (11) on the bolt (6) with lower box body (1), hair wiping board (7), spring bearer plate (5) is connected as a single entity.