CN2666691Y

CN2666691Y - Blackboard eraser with means for absorbing the chalk dust

Info

Publication number: CN2666691Y
Application number: CN 200320131221
Authority: CN
Inventors: 崔希林
Original assignee: Individual
Current assignee: Individual
Priority date: 2003-12-29
Filing date: 2003-12-29
Publication date: 2004-12-29
Anticipated expiration: 2013-12-29

Abstract

The utility model discloses a dust absorption blackboard eraser, and is characterized in that the back of a blackboard eraser body (3) is provided with a closed cavity (5) while the front of the blackboard eraser body (3) is provided with a dovetail groove (4) of a strip (2), a dust absorption hole (1) which is communicated with the cavity (5) is arranged on the blackboard eraser body (3) around the strip (2); the end of the blackboard eraser body (3) is connected with a dust absorption hose (7), one end of the hose (7) is communicated with the cavity (5) while the other end is communicated with a dust collector (8); the back of the blackboard eraser body (3) is provided with a switch (9) which controls the dust collector (8). When the handwritings of chalk needs cleaning, the switch (9) is pressed and then the dust collector (8) works, chalk dust brushed down by the strip (2) is first absorbed into the dust absorption hole (1), then passes through the cavity (5) and at last is absorbed into the dust collector (8). No chalk dust flies in front of the blackboard so as to keep a clean environment of the classroom and ensure the health of the teachers and students.

Description

Ash-collecting blackboard eraser

One, technical field

The utility model relates to a kind of blackboard eraser that removes letter written with chalk on the blackboard.

Two, background technology

Current, remove the used blackboard erasers of writing with chalk on the blackboard such as font, its structure is to fix the felt piece on the plank.When using this kind blackboard eraser to wipe word chalk powder is flown upward in the classroom, cause indoor environment to degenerate, endangering the healthy of teachers and students.

Three, summary of the invention

In order to solve the deficiencies in the prior art, technical problem to be solved in the utility model provides a kind of ash-collecting blackboard eraser, and not having during letter written with chalk on erasing the board with it has chalk powder to fly upward.

The technical scheme that solves its technical problem employing is: there is vertical dovetail groove the front that the back side has the blackboard eraser rub body of enclosed cavity, stud with the felt rug that to wipe letter written with chalk on the blackboard in the dovetail groove, be distributed with air suction opening around the felt rug on the rub body by the logical rub body cavity of transitional pore; The tail end of rub body is connected to the hose that the logical cavity other end of an end communicates with dust catcher, and the back side of rub body studs with the switch of control dust catcher work.When wiping letter written with chalk, the work of Push switch dust catcher, the chalk powder under felt rug is wiped sucks in the dust catcher from air suction opening, thereby realizes the purpose of this utility model.

The beneficial effects of the utility model are: just around the felt rug on blackboard eraser the air suction opening that some communicate with dust catcher is set, the chalk powder under wiping is just siphoned away by dust catcher, and not having before the blackboard has dust from flying, has kept environment in the classroom, has guaranteed teachers and students' health.

Four, description of drawings

Fig. 1 is main TV structure figure of the present utility model.

Fig. 2 is the structure chart of the utility model Figure 1A-A section.

Fig. 3 is the rear view of the utility model blackboard eraser.

Five, the specific embodiment

In each figure, the utility model ash-collecting blackboard eraser is made up of rub body, felt rug, hose and dust catcher.The back side of rub body 3 is sealed hollow 5, and there is vertical dovetail groove 4 front, studs with the felt rug 2 that can wipe letter written with chalk on the blackboard in the dovetail groove 4, is distributed with the air suction opening 1 by transitional pore 6 logical rub body cavitys 5 around the felt rug 2 on the rub body 3.The tail end of rub body 3 is connected to hose 7, and this flexible pipe one end leads to cavity 5, and the other end communicates with dust catcher 8; The appropriate location at rub body 3 back sides studs with switch 9, and this switch 9 joins with dust catcher in cavity, flexible pipe by lead, 8 work of control dust catcher.

Claims

1, a kind of ash-collecting blackboard eraser is made up of rub body, felt rug, hose and dust catcher; It is characterized in that: there is enclosed cavity (5) at the back side of blackboard eraser rub body (3), there is vertical dovetail groove (4) front, stud with the felt rug (2) that to wipe letter written with chalk on the blackboard in the dovetail groove (4), be distributed with the air suction opening (1) that communicates with rub body cavity (5) by transitional pore (6) on the rub body (3) around the felt rug (2); The tail end of rub body (3) is connected to the logical cavity (5) of an end, the hose (7) that the other end communicates with dust catcher (8), and the back side of rub body (3) studs with the switch (9) of control dust catcher (8) work.