CN104108270A

CN104108270A - Multipurpose blackboard eraser

Info

Publication number: CN104108270A
Application number: CN201410332931.1A
Authority: CN
Inventors: 宋晓娜; 王新勇; 张景恺; 黄春云; 张文博
Original assignee: Henan University of Science and Technology
Current assignee: Henan University of Science and Technology
Priority date: 2014-07-14
Filing date: 2014-07-14
Publication date: 2014-10-22

Abstract

The invention discloses a multipurpose blackboard eraser which comprises an eraser body and a felt arranged on one face of the eraser body. A sponge is arranged on the other face of the eraser body, a rear cover is detachably fixed to the eraser body, the felt or the sponge is wrapped by the rear cover, an inner hole and a U-type groove are formed in the two sides of the eraser body, a stretchable rod is fixed in the inner hole, the movable end of the stretchable rod can be stretched out of the eraser body, one end of a hairbrush used for sweeping dust is fixed in the U-type groove in a rotary mode, and the other end of the hairbrush can be stretched out of the eraser body under the effect of external force. According to the multipurpose blackboard eraser, the felt and the sponge are arranged on the two faces of the eraser body, a blackboard can be firstly cleaned through the felt and then cleaned through the sponge, chalk dust is well absorbed, flying of the chalk dust is reduced, the cleaning effect is improved, and the blackboard is clean; magnetic strips are arranged on the surfaces of the outer sides of the eraser body and the rear cover, the blackboard eraser can be directly attracted on the blackboard after cleaning is completed, and the multipurpose blackboard eraser is convenient to place, can be further used as a pointer and a hairbrush, and is powerful in function and wide in application range.

Description

A kind of multipurpose blackboard eraser

Technical field

The present invention relates to blackboard eraser, specifically a kind of multipurpose blackboard eraser.

Background technology

Blackboard eraser is a kind of conventional teaching facilities, for the letter written with chalk on erasing blackboard, the blackboard that China school is used remains take traditional blackboard as main, the wiping method of this blackboard is hand-held blackboard eraser, wiping repeatedly on blackboard, the wiping operation method of this blackboard eraser is not only time-consuming but also require great effort, often wiping is unclean, while erasing the board, tedious chalk dust dances in the air all over the sky, drop on desk and before dais, even be inhaled in people's body, can cause nose, pharynx, the respiratory systems such as throat are uncomfortable, likely cause inflammation, serious meeting causes lung cancer and pulmonary emphysema, in teaching process, want regular wiping letter written with chalk, every wiping once will be arrived on lectern and be taken once, very inconvenience.

In addition, current blackboard eraser is that simple blackboard wiping is used, function singleness.

Summary of the invention

For solving, in above-mentioned technology, have that blackboard wiping effect is bad, this problem of function singleness, the invention provides a kind of multipurpose blackboard eraser.

The present invention is the deficiency solving the problems of the technologies described above, the technical scheme adopting is: a kind of multipurpose blackboard eraser, comprise rub body, felt, telescopic lever, sponge and bonnet, rub body simultaneously arranges felt, relative another side arranges sponge, bonnet is dismountable be fixed on rub body and make felt or sponge wrapping in bonnet, endoporus and U-shaped groove are distributed in rub body both sides, in described endoporus, be fixed with expansion link, expansion link movable end can be stretched rub body outside, hairbrush one end that is fixed for cleaning dust of U-shaped groove internal rotation type, the other end of hairbrush is under external force outside extended rub body.

In addition, described rub body and bonnet outer surface are also provided with for making blackboard eraser be adsorbed on the magnetic stripe on blackboard.

Income effect: a kind of multipurpose blackboard eraser of the present invention, be provided with felt and sponge, can better absorb chalk dust first with using again sponge wiping after felt blackboard wiping, reduce chalk dust and fly upward, wiping effect promotes, and blackboard is cleaner.

Rub body and bonnet outer surface are provided with magnetic stripe, can make blackboard eraser wiping directly be adsorbed on blackboard after complete, and it is convenient to place, and reduces in the process of giving lessons and takes running of blackboard eraser.

Rub body inside is provided with three grades of expansion links, can be stretched after, blackboard eraser, in addition, can rotate hairbrush in U-shaped groove when teacher's pointer uses as handle, holds blackboard eraser as the chalk dust depositing on hairbrush blackboard cleaning groove or lectern for handle.

Accompanying drawing explanation

Fig. 1 is overall structure schematic diagram of the present invention.

Fig. 2 is the side view of the present invention one side.

Fig. 3 is the side view of another side of the present invention.

Graphical indicia, 1. rub body, 2. felt, 3. endoporus, 4. expansion link, 5. sponge, 6. bonnet, 7. hairbrush, 8.U type groove, 9. magnetic stripe.

The specific embodiment

Below in conjunction with accompanying drawing, embodiments of the invention are elaborated, the present embodiment be take technical solution of the present invention as prerequisite, provided detailed embodiment and concrete operating process, but protection scope of the present invention is not limited to following embodiment.

As shown in Figure 1, a kind of multipurpose blackboard eraser, comprise rub body 1, felt 2, telescopic lever 4, sponge 5 and bonnet 6, rub body 1 one side arranges felt 2, relative another side arranges sponge 5, first uses with after 2 one blackboard wipings of felt, then uses a blackboard wiping with sponge 5, can have better blackboard wiping effect, and sponge is adsorbed again after chalk dust and can reduce flying upward of chalk dust.

Bonnet 6 is dismountable to be fixed on rub body 1 and to make felt 2 or sponge 5 is wrapped in bonnet 6, while using the one side of rub body 1, can cover upper another side with bonnet 6, effectively protects the service life of felt 2 or sponge 5.

Function of the present invention is many, except blackboard wiping, also have other purposes, function example 1: as shown in Figure 3, rub body 1 inside is also provided with one end and the extraneous endoporus 3 communicating, one end be fixed on expansion link 4 other ends in endoporus 3 can stretched rub body 1 outside, expansion link 4 activities are extracted out from endoporus 3, after stretching completely, as the teacher's pointer of blackboard eraser being used as to handle, use.

Function example 2: as shown in Figure 2, rub body 1 inside is also provided with one end and the extraneous U-shaped groove 8 communicating, for cleaning hairbrush 7 one end of dust, be fixed in U-shaped groove 8, outside the extended rub body 1 in band hairbrush one end, hairbrush 7 fixes in U-shaped groove 8 by hinges fixing, can rotate around hinge, during use, rotate hairbrush 7 and expose U-shaped groove 8 outsides, as the brush of blackboard eraser being used as to handle, use, can deposit more place for the difficulty removings such as blackboard cleaning groove, lectern gap and chalk dust.

The present invention is in order more fully to consider teacher's working hard when giving lessons, rub body 1 and bonnet 6 outer surfaces are provided with magnetic stripe 9, can make blackboard eraser be adsorbed on blackboard, use and directly blackboard eraser is adsorbed on blackboard afterwards, can directly stretch out one's hand take while using next time, reduce the number of times that teacher walks up and down when taking blackboard eraser, alleviate the arduous of teacher.

The present invention does not narrate part for prior art.

Claims

1. a multipurpose blackboard eraser, it is characterized in that: comprise rub body (1), felt (2), telescopic lever (4), sponge (5) and bonnet (6), rub body (1) one side arranges felt (2), relative another side arranges sponge (5), the dismountable rub body (1) that is fixed on of bonnet (6) goes up and makes felt (2) or sponge (5) to be wrapped in bonnet (6), endoporus (3) and U-shaped groove (8) are distributed in rub body (1) both sides, in described endoporus (3), be fixed with expansion link (4), the movable end of expansion link (4) can stretched rub body (1) outside, the hairbrush that is fixed for cleaning dust (7) one end of U-shaped groove (8) internal rotation type, the other end of hairbrush (7) is under external force outside extended rub body (1).

2. a kind of multipurpose blackboard eraser according to claim 1, is characterized in that: described rub body (1) and bonnet (6) outer surface are provided with for making blackboard eraser be adsorbed on the magnetic stripe (9) on blackboard.

3. a kind of multipurpose blackboard eraser according to claim 1, is characterized in that: described expansion link (4) can be stretched three sections.

4. a kind of multipurpose blackboard eraser according to claim 1, is characterized in that: described hairbrush (7) is to be connected by a connecting axle through U-shaped groove (8) with U-shaped groove (8).