CN2326455Y

CN2326455Y - Ash-collecting blackboard eraser

Info

Publication number: CN2326455Y
Application number: CN 98226023
Authority: CN
Inventors: 焦树峥
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-02-18
Filing date: 1998-02-18
Publication date: 1999-06-30
Anticipated expiration: 2008-02-18

Abstract

The utility model discloses a dust absorbing blackboard eraser. The utility model is combined by a duster and a hollow blackboard eraser. A casing of the blackboard eraser is in a concave shape. The inner edge of the casing is provided with a dust protecting sleeve and a pressing iron. The pressing iron is provided with a hair brush frame and a hair brush. The lower part of the casing is provided with a dust outlet, and the middle side surface is provided with a switch. One head of a soft tube is connected with the dust outlet, and the other head is connected with a dust inlet of the duster. The power supply line of the switch is arranged in the soft tube. The utility model has the advantages of simple structure and convenient operation. The utility model can completely remove chalk dust, and can protect environment and personal health.

Description

Ash-collecting blackboard eraser

The utility model relates to the blackboard eraser technology.

Use chalk after writing on the blackboard teacher in the classroom, when wiping with ordinary blackboard eraser, powder ash four is raised, and is both unhygienic, again Faculty and Students' health damaged, and this problem is perplexing people for a long time.

The purpose of this utility model is, a kind of ash-collecting blackboard eraser is provided, and dust can be absorbed and collect to this blackboard eraser simultaneously when wiping the letter written with chalk of writing on the blackboard, with the with fresh air and environmental sanitation in the maintenance classroom, and eliminate the harmful effect that dust is caused Faculty and Students' health.

The utility model is to adorn a flexible pipe on special dust catcher, links to each other with blackboard eraser, and power switch is contained on the blackboard eraser.When the teacher uses ash-collecting blackboard eraser, can arbitrarily start dust catcher work, the powder ash under will wiping at any time sucks dust-storage chamber, can press start button after class, takes off dust-storage chamber, removes dust, refills and continues to use.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the cutaway view of the utility model ash-collecting blackboard eraser.

Ash-collecting blackboard eraser shown in Figure 1 is combined by dust catcher and hollow blackboard eraser, and both connect through hose (14).Its structure is:

A) motor (11) is arranged at the top in shell of the dust collector (9), and there are power line and plug (13) in the upper end of motor (11), and power line is tightened up by power supply geometrical clamp (12); There is worm gear (7) lower end of motor (11), and worm gear (7) is fixed tightly in the lower end of motor shaft (25) by lock nut (6); Motor (11) is located and is fixed on the housing (9) by electric machine support (8); Horn mouth (5), filter dirt mouth (26) are arranged at the bottom in the housing (9); Filter dirt mouth (26) outer rim has filter screen (2); There is dust inlet (24) on the right of housing (9), and there are start button (3) and spring (4) in the left side; Housing (9) lower end outer rim is connected with dust-storage chamber (1), between housing (9) and the dust-storage chamber (1) sealing ring (21) is arranged, and dust-storage chamber (1) is located by start button (3); The upper side of shell of the dust collector (9) attaches together set bolt (10);

B) blackboard eraser shell (16) is recessed dish type, and inner edges has rubber to protect dirt cover (18), protects dirt cover (18) and is compressed by ring-type foundary weight (19), and suede brush holder (22) is arranged on the foundary weight (19), and suede brush (20) is connected on the suede brush holder (22); There is dust mouth (23) below of shell (16); There is power switch (17) in the outside of shell (16);

C) one of hose (14) is connected on the dust mouth (23), and the other end is connected on the dust inlet (24); Switching Power Supply line (15) is in hose (14).

During use, press switch (17), dust catcher is started working, when blackboard eraser moves up and down removing writing on the blackboard writing, suede brush (20) is wiped dust down, dust under wiping is unlikely by protecting dirt cover (18) frame to live to fly upward everywhere, and the air of dust catcher suction this moment enters the blackboard eraser cavity by the slit of blackboard eraser outer rim and seriticker, and is being with dust to enter dust-storage chamber (1) by dust mouth (23) through flexible pipe (14) and dust inlet (24); The air that is mingled with the dirt ash has been stayed dust in the dust-storage chamber (1) again through the filtration of filter screen (2), and clean air is dirt mouth (26) after filtration again, and behind the horn mouth (5), the hole by shell of the dust collector (9) top enters atmosphere.

The utility model volume is little, and is easy to use, can remove dust fully after the use, keep air cleaner in the classroom, overcome the situation that teacher for many years eats chalk dust, protected environment and health of human body, has good application prospects surely.

Description of drawings:

Among the figure: 1, dust-storage chamber; 2, screen pack; 3, start button; 4, spring; 5, horn mouth; 6, worm gear lock nut; 7, worm gear; 8, electric machine support; 9, shell of the dust collector; 10, attach together set bolt; 11, motor; 12, power supply geometrical clamp; 13, attaching plug; 14, hose; 15, electric wire; 16, blackboard eraser shell; 17, power switch; 18, rubber protects the dirt cover; 19, foundary weight; 20, suede brush; 21, sealing ring; 22, suede brush holder; 23, dust mouth; 24, dust inlet; 25, motor shaft; 26, filter dirt mouth.

Claims

1. an ash-collecting blackboard eraser is characterized in that, is to be formed by connecting through hose by dust catcher and blackboard eraser.

2. blackboard eraser as claimed in claim 1 is characterized in that, the structure of described dust catcher and blackboard eraser is:

A) motor is arranged at the top in shell of the dust collector, and there are power line and plug in the upper end of motor, and power line is tightened up by the power supply geometrical clamp; There is worm gear the lower end of motor, and worm gear is fixed tightly in the lower end of motor shaft by lock nut; Motor is located and is fixed on the housing by electric machine support, and horn mouth is arranged at the bottom in the housing, filter dirt mouth; Filter dirt mouth outer rim has screen pack; There is dust inlet on the right of housing, and there are start button and spring in the left side; Housing lower end outer rim is connected with dust-storage chamber, between housing and dust-storage chamber sealing ring is arranged; Dust-storage chamber is located by start button; The upper side of shell of the dust collector attaches together set bolt;

B) the blackboard eraser shell is recessed dish type, and inner edges has rubber to protect the dirt cover, protects the dirt cover and is compressed by the ring-type foundary weight, and the suede brush holder is arranged on the foundary weight, and the suede brush is connected on the suede brush holder; There is the dust mouth below of shell, and there is power switch in the outside of shell;

C) on the dust mouth that of hose is connected shell below; The other end is connected on the dust inlet of dust catcher below; The Switching Power Supply line is in hose.