CN2579679Y

CN2579679Y - Dust suction blackboard eraser

Info

Publication number: CN2579679Y
Application number: CN 02257967
Authority: CN
Inventors: 何智慧; 杨森
Original assignee: Individual
Current assignee: Individual
Priority date: 2002-10-22
Filing date: 2002-10-22
Publication date: 2003-10-15
Anticipated expiration: 2012-10-22

Abstract

The utility model provides a blackboard eraser with dust suction, which is mainly composed of a shell, eraser strips, a motor and an impeller, wherein an inner cavity of the shell is divided into a dust suction chamber, a dust collection chamber and a battery chamber, wherein a dust outlet hole with a cover is arranged on the shell of the dust collection chamber; one surface of the shell of the dust collection chamber, which corresponds to the shell of the dust suction chamber is provided with a round hole used for placing an eraser strip base; a plurality of eraser strips and a plurality of dust suction holes are arranged in the eraser strip base; the middle part of the lower surface of the eraser strip base is connected with a rotary shaft of the motor which is fixed in the dust suction chamber; the impeller for dust suction is arranged on the rotary shaft; the motor is connected with a battery in the battery chamber and a switch at the outer side of the shell; the contiguous position of the dust suction chamber and the dust collection chamber is in an arc shape or a trumpet shape and is provided with a dust channel; a trumpet-shaped inverse bag without a bottom is arranged in the dust channel to prevent the dust from flowing back. The utility model has the advantages of simple structure, reasonable price, convenient use and good dust suction effect, and can effectively improve the classroom environment, reduce the dust pollution and ensure the good health of teachers and students.

Description

Dust absorption blackboard eraser

Affiliated technical field

The utility model relates to a kind of teaching aid, particularly a kind of dust absorption blackboard eraser.

Background technology

At present, in the teaching process of China school, what still extensively adopt is the teaching method of being write on blackboard with chalk by teacher, the iron sheet box structure of the blackboard eraser that is adopted traditional band felt still, there is not dust exhaust apparatus, so when blackboard wiping, dust from flying in the classroom, easily by in people's suction body, teachers and students' health is caused serious harm.For this reason, people also improve traditional blackboard eraser, but because its complex structure, price is higher, pick-up performance is not satisfactory, fail to be applied.

Summary of the invention

Be the existing weak point of the blackboard eraser that overcomes prior art, the utility model provides a kind of simple in structure, reasonable price, easy to use, dust absorption blackboard eraser that pick-up performance is good.

The technical scheme that its technical problem that solves the utility model adopts is: it mainly is made up of housing, wiping bar, motor, impeller; The inner chamber branch of housing is set as dust suction chamber, dust storage chamber and battery chamber; The housing of dust storage chamber is provided with dust export with cover; Offer in one side and to be used to install the circular hole of wiping the bar seat, wipe the bar seat and be provided with several and wipe bars and offer several air suction openings corresponding to the housing of dust suction chamber; The lower surface middle part of wiping the bar seat links to each other with the rotating shaft of motor in being fixed in dust suction chamber, also is equiped with the impeller that is used for dust suction in the rotating shaft, and the battery in motor and the battery chamber, the switch on the hull outside link to each other.

Dust suction chamber curved or tubaeform with the dust storage chamber adjacent, and be provided with the dust passage.

The tubaeform reverse bag at the one no end can be housed, in case dust flows backwards in the dust passage.

The supply socket that can link to each other with external alternating current-direct current transformer is housed in the housing.

The beneficial effects of the utility model are: the utility model is simple in structure, reasonable price, easy to use, pick-up performance good, can improve classroom environment effectively, reduces dust pollution, guarantees that teachers and students' is healthy.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment;

Fig. 2 is the A-A cutaway view of Fig. 1.

The specific embodiment

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

The utility model mainly is made up of housing 1, wiping bar 4, motor 7, impeller 8; The inner chamber branch of housing 1 is set as dust suction chamber 9, dust storage chamber 14 and battery chamber 12; The housing 1 of dust storage chamber 14 is provided with cover 15 dust export; Offer in the one side corresponding to the housing 1 of dust suction chamber 9 and to be used to install the circular hole 2 of wiping bar seat 3, disc is wiped bar seat 3 and is provided with 10 wiping bars of being made by felt 4 and offers 24 air suction openings; The lower surface middle part of wiping bar seat 3 links to each other with the rotating shaft 16 of motor 7 in being fixed in dust suction chamber 9, also is equiped with the impeller 8 that is used for dust suction in the rotating shaft 16, and the interior battery in motor 7 and battery chamber 12, the switch 6 on housing 1 outside link to each other.Dust suction chamber 9 curved with dust storage chamber 14 adjacents, and be provided with the dust path 10.The tubaeform reverse bag 11 at the one no end is housed, in case dust flows backwards in the dust path 10.The supply socket 13 that can link to each other with external alternating current-direct current transformer is housed in the housing 1, and supply socket 13 links to each other with motor 7, switch 6.

During use, install battery (or with supply socket 13 with connect the electricity external alternating current-direct current transformer link to each other), open switch 6, motor 7 work, wipe bar seat 3 and drive 4 rotations of wiping bar, chalk mark on the blackboard is wiped, and the impeller 8 that dust is rotated sucks dust suction chamber 9 through air suction opening 5, enters dust storage chamber 14 through the dust path 10 again.Dust in the dust storage chamber 14 are owing to be subjected to cloth matter, tubaeform reverse bag 11 effects, and unlikely being back in the dust suction chamber 9.After using a period of time, open the lid 15 of dust export, dust is outwelled.

Claims

1, dust absorption blackboard eraser mainly is made up of housing, wiping bar, motor, impeller; The inner chamber branch of housing is set as dust suction chamber, dust storage chamber and battery chamber; The housing of dust storage chamber is provided with dust export with cover; It is characterized in that: offer in one side and be used to install the circular hole of wiping the bar seat, wipe the bar seat and be provided with several and wipe bars and offer several air suction openings corresponding to the housing of dust suction chamber; The lower surface middle part of wiping the bar seat links to each other with the rotating shaft of motor in being fixed in dust suction chamber, also is equiped with the impeller that is used for dust suction in the rotating shaft; Battery in motor and the battery chamber, the switch on the hull outside link to each other.

2, dust absorption blackboard eraser according to claim 1 is characterized in that: dust suction chamber curved or tubaeform with the dust storage chamber adjacent, and be provided with the dust passage.

3, dust absorption blackboard eraser according to claim 2 is characterized in that: the tubaeform reverse bag that a no end can be housed in the dust passage.