CN2302134Y

CN2302134Y - Electric blackboard without dust

Info

Publication number: CN2302134Y
Application number: CN 97242012
Authority: CN
Inventors: 尹传锋
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-09-28
Filing date: 1997-09-28
Publication date: 1998-12-30
Anticipated expiration: 2007-09-28

Abstract

The utility model relates to an electric dustless blackboard. The utility model is composed of a strip-shaped blackboard face, an upper rotary shaft, a lower rotary shaft, a motor, an upper driving chain wheel, a lower driving chain wheel, a chain, a lining board and a structure of a cover casing. The driving mode of the motor is used to automatically turn the strip-shaped blackboard face backwards so that the handwriting on a blackboard can be automatically erased, chalk dust is caused to be fallen into the cover casing, chalk dust pollution is reduced, and health of bodies of teachers and students is beneficially protected. The utility model has the advantages of safety and sanitation, low cost and convenient use. The action that the utility model is erased can be completed only by slightly pressing a button. The utility model is an ideal product for universities, elementary schools and secondary schools at present.

Description

Electric dust-less blackboard

The utility model relates to a kind of blackboard, particularly a kind of electric dust-less blackboard.

The blackboard that existing school is used to impart knowledge to students, generally adopt traditional mode that blackboard is fixing on the wall, its blackboard and blackboard eraser can not be connected as a single entity, and need to clean by manpower, and dust is bigger like this, contaminated environment, can endanger the healthy of teachers and students for a long time, and the pupil is because of can't reach blackboard, often stepping on the writing of stool on erasing the board, easily cause tumble injury, very dangerous.

The purpose of this utility model is to be provided with a kind of writing that can clean automatically on the blackboard, and does not have and to have dust to occur, and just achievable electric dust-less blackboard gently only need push button.

The utility model is finished like this, it is to be formed by stripe board face, upper and lower rotating shaft, motor, upper and lower drive sprocket, chain, liner plate and outer casing structure, the stripe board face is connected to band (ring) shape, its ring set is in upper and lower rotating shaft, and the centre is provided with liner plate, upper and lower rotating shaft is connected with upper and lower drive sprocket, and be socketed with chain, attaching has motor on lower rotary shaft, and by outer casing upper and lower rotating shaft, liner plate and upper and lower sprocket wheel, chain and motor is sealed in the housing.

The utility model has the advantages that the mode of utilizing electric-motor drive turns over the stripe board face after automatically; and dust is fallen in the housing case; reduce dust pollution; useful protection teachers and students' is healthy; and safety and sanitation; cost is low, and is easy to use, is the comparatively desirable product of present large, medium and small school.

Provide below in conjunction with drawings and Examples.

Fig. 1 is the utility model master TV structure semi-section schematic diagram.

Fig. 2 is the utility model left side TV structure generalized section.

As Fig. 1, shown in 2, the utility model is by stripe board face 1, on, lower

rotary shaft

2,3, motor 4, on, underdrive sprocket wheel 5, chain 6, liner plate 7 and outer casing 8 structures form, stripe board face 1 is connected to band (ring) shape, its ring set is last, lower rotary shaft 2, on 3, and the centre is provided with liner plate 7, on, lower

rotary shaft

2,3 profiles are made as hexagonal prism, in be provided with bearing 9, and be connected with, underdrive sprocket wheel 5, drive sprocket 5 is connected with chain 6, attaching has motor 4 on lower rotary shaft 3, and will go up by outer casing 8, lower

rotary shaft

2,3, liner plate 7 and on, underdrive sprocket wheel 5, chain 6 and motor 4 are sealed in the housing, about outer casing 8 end respectively fixedly connected on, lower bearing 9, and device has motor starting button 10, is fixed with blackboard eraser bristle 11 in its back side and the bottom respectively, 12, blackboard eraser bristle 11,12 abut against respectively on the stripe board face 1, the front of outer casing 8 is that sky is rectified, and stripe board face 1 is exposed.When pressing the motor button, motor just drives lower rotary shaft and the rotation of underdrive sprocket wheel, and drive to go up drive sprocket and last rotating shaft is rotated simultaneously by chain, stripe board is towards the back upset under the effect of upper and lower rotating shaft, in rotating process, the blackboard eraser bristle that the back side in the housing case and bottom are provided with is wiped the writing dust on the stripe board face automatically, and a dust part is adsorbed by the blackboard eraser bristle, and a part falls in the housing.

Claims

1, a kind of electric dust-less blackboard, it is characterized in that it is by stripe board face 1, on, lower rotary shaft 2,3, motor 4, on, underdrive sprocket wheel 5, chain 6, liner plate 7 and outer casing 8 structures form, stripe board face 1 is connected to band (ring) shape, its ring set is last, lower rotary shaft 2, on 3, and the centre is provided with liner plate 7, on, lower rotary shaft 2,3 are connected with, underdrive sprocket wheel 5, and be socketed with chain 6, attaching has motor 4 on lower rotary shaft 3, and will go up by outer casing 8, lower rotary shaft 2,3, liner plate 7, and on, underdrive sprocket wheel 5, chain 6 and motor 4 are sealed in the housing.

2, according to the described electric dust-less blackboard of claim 1, it is characterized in that upper and lower rotating shaft 2,3 profiles are made as hexagonal prism, in be provided with bearing 9.

3, according to the described electric dust-less blackboard of claim 1, the fixedly connected upper and lower bearing 9 of left and right end difference that it is characterized in that outer casing 8, and be provided with motor starting button 10, be fixed with blackboard eraser bristle 11,12 in its back side and the bottom respectively, blackboard eraser bristle 11,12 abuts against respectively on the stripe board face 1, the front of outer casing 8 is that sky is rectified, and stripe board face 1 is exposed.