CN2190035Y - Blackboard eraser - Google Patents

Abstract

The utility model discloses a blackboard eraser, which can reduce the dust pollution and belongs to the stationery. The box body provided with an erasing plate is screwed with a box cover, and one end of the box body is provided with a dust collecting chamber. The middle part of the erasing plate and the inner surface of both sides are all provided with a concave groove, and the erasing plate is equipped with two slotted holes. Two brush hair rollers provided with the brush hair are respectively arranged in two slotted holes, and both ends of the two brush hair rollers are all provided with end axles and all penetrate into the axle holes arranged in both ends of the box body. The middle part of the erasing plate is fixed with an erasing surface being lower than the height of the brush hair, the box body is provided with two dust pulling plates near the brush hair, and both ends of the dust pulling plates is integrated with both ends of the box body. The utility model has the simple structure and is easy for application.

Description

Blackboard eraser

The utility model belongs to stationery, is specifically related to a kind of blackboard eraser that reduces dust pollution.

At present, school still continues to use old-fashioned blackboard eraser, and this blackboard eraser causes dust to rise from all around in use, directly affects the healthy of teachers and students.

The purpose of this utility model is that a kind of blackboard eraser that reduces dust pollution is provided.

The utility model is, fastening lid being provided with on the box body of wiping board, end in box body is provided with powder-collecting chamber, inner surface in wiping board middle part and both sides is equipped with Baltimore groove, on wiping board, be provided with two slotted eyes, two bristle rollers that are provided with bristle are located at respectively in two slotted eyes, all there is the end axle at the two ends of two bristle rollers and all penetrates in the axis hole that is provided with at the box body two ends, fixing a wiping face at the wiping board middle part a little less than the bristle height, be provided with the powder allocation plate of two summaries near bristle in box body, the two ends of powder allocation plate and the two ends of box body are connected as a single entity.

Below in conjunction with accompanying drawing, the utility model is further described.

Fig. 1 is that half section master of the present utility model looks schematic diagram.

Fig. 2 is the vertical view after Fig. 1 dissects along A-A.

As Fig. 1, shown in Figure 2, on the box body 1 that is provided with wiping board 12, fastening a lid 2, end in box body 1 is provided with powder-collecting chamber 11, inner surface in wiping board 12 middle parts and both sides is equipped with Baltimore groove 10, on wiping board 12, be provided with two slotted eyes 13, be provided with two bristle rollers 4 of bristle 5, be located at respectively in two slotted eyes 13 that are slightly larger than bristle roller 4, two bristle rollers 4 can adopt with bristle 5 plants hair or adhered being connected and fixed, the end axle 6 at two bristle roller 4 two ends all penetrates in the axis hole 7 that is arranged on box body 1 two ends, box body 1, lid 2 adopts the plastics manufacturing of good springiness, so that the end axle 6 of bristle roller 4 can utilize the elasticity of plastic box body 1 to be enclosed in the axis hole 7, bristle roller 4 is assembled together after can adopting the manufacturing of plastics integral type or separate manufacturing with end axle 6 again.Adopt adhered at wiping board 12 middle parts or the screw interconnection system is being fixed the wiping face 3 that a material that is suitable for erasing the board by sponge or corduroy etc. is made, wiping face 3 is a little less than the height of bristle 5, so that wiping face 3 can be accepted the chalk dust of having wiped and rotate in the box body 1 by the bristle on the bristle roller 45, and by powder allocation plate 8,9 chalk dust on the bristle 5 is dialled and to be fallen in the powder-collecting chamber 11, be located at powder allocation plate 8, the 9 slightly close bristles 5 in the box body 1, the two ends of powder allocation plate 8,9 and the two ends of box body 1 are the integral type manufacturing.

During use, the end that this wiping is provided with powder-collecting chamber 12 down, the both sides of hand-held this wiping can erase the board.Bristle 5 can be with 4 rotations of bristle roller, when wiping face 3 touches the letter written with chalk on the blackboard and back and forth erases the board back and forth, bristle 5 and bristle roller 4 a little more than wiping face 3 height just rotate rolling, at this moment, bristle 5 just brings to chalk dust in the box, through powder allocation plate 8,9 chalk dust on the bristle 5 is dialled and to be loose in Baltimore groove 10 and powder-collecting chamber 11, dialling looses can drop to powder-collecting chamber 1 voluntarily to Baltimore groove 10 interior chalk dusts.When the chalk dust of powder-collecting chamber 11 is filled, can take off lid 2 from box body 1 chalk dust is poured out, cover lid 2 then and can continue to use.

The utility model is owing to be provided with two bristle rollers that are provided with bristle and will be arranged between two bristle rollers a little less than the wiping face of bristle height and again the powder allocation plate of two summaries near bristle be located in the box body in two slotted eyes on wiping board, so, use this wiping when erasing the board, chalk dust can be collected the powder-collecting chamber in the box body.Therefore, use this wiping can reduce dust pollution, thereby protected teachers and students' health.This wiping is simple in structure, and is easy to implement.

Claims (1)

1, a kind of blackboard eraser, it is characterized in that, be provided with wiping board＜12〉box body＜1 on fastening lid＜2, in box body＜1〉in an end be provided with powder-collecting chamber＜11, in wiping board＜12〉middle part and the inner surface of both sides be equipped with Baltimore groove＜10 〉, in wiping board＜12〉on be provided with two slotted eye＜13, be provided with bristle＜5〉two bristle roller＜4 be located at two slotted eye＜13 respectively in, two bristle roller＜4〉two ends end axle＜6 are all arranged and all penetrate in box body＜1 axis hole＜7 that are provided with, two ends in, in wiping board＜12〉middle part fixing one a little less than bristle＜5 height wiping face＜3, in box body＜1〉in be provided with two summaries near bristle＜5 powder allocation plate＜8,＜9 〉, powder allocation plate＜8 〉,＜9〉two ends and box body＜1〉two ends be connected as a single entity.

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