CN2367474Y

CN2367474Y - Rolling blackboard

Info

Publication number: CN2367474Y
Application number: CN 99228124
Authority: CN
Inventors: 刘敬礼
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-04-09
Filing date: 1999-04-09
Publication date: 2000-03-08
Anticipated expiration: 2009-04-09

Abstract

The utility model relates to a novel rolling blackboard, wherein, the cylinder-shaped board surface of which is tightly sheathed on a roller which is fixed to a wall body. An electric motor is controlled by a speed regulation two-way switch to draw the roller to move via a belt; wiping hair of a blackboard wiper realizes a contact or non-contact state with the board surface via a clutching switch; a dust box is arranged on the lower part of the blackboard wiper; a seal strip seals the gap point between the board surface and the wall body. The utility model can ensure indoor rooms to have no dust pollution, and enlarge the utilization rate of the board surface; the teaching time is prolonged relatively and the teaching quality is improved directly.

Description

The new-type rolling blackboard

The utility model belongs to teaching aid, is specifically related to a kind of structure of new-type rolling blackboard.

At present, the employed blackboard of all kinds of schools mostly is cement, plank or frosted glass greatly and constitutes, and these blackboards all can't solve chalk dust to indoor pollution, and numerous teachers and students deeply hurt, though dust-free chalk has been arranged, does not also have fundamentally contaminated solution problem.

The utility model designs a kind of Rolling blackboard, reaches the minimizing dust pollution, strengthens plate face utilization rate, the purpose that prolongs hours of instruction relatively.

The purpose of this utility model is achieved in that

The plate face of tubular is locked and is being fixed on two roller bearings of body of wall, and the motor of speed governing two-way switch control is through the motion of belt traction roller bearing, and the snag of blackboard eraser contacts by the adjusting knob realization with the plate face or contact condition not, and there is the box that gathers dust its underpart.

Fig. 1 is the utility model structural representation

Among the figure: 1 speed governing two-way switch, 2 motors, 3 belts, 4 roller bearings, 5 plate faces, 6 blackboard erasers, 7 Isolating Switch, 8 dust boxes, 9 sealing strips

Introduce implementation method of the present utility model below in conjunction with accompanying drawing:

The tubular plate face made from black chemical fabric or film etc. 5 is enclosed within outside two roller bearings 4, the motor 2 of speed governing two-way switch 1 control sidewinders axle through belt 3 tractions one and rotates, plate face 5 is promptly with roller bearing 4 motions, Isolating Switch 7 control blackboard erasers 6 on the wide blackboard eraser 6 of length and plate face separate or contact condition with blackboard, dust box 8 is fixed in the below of blackboard eraser 6, the gap location between sealing strip 9 sealing plate faces and body of wall.

Push to Isolating Switch 7, the snag of blackboard eraser 6 contacts with plate face 5, press speed governing two-way switch 1, motor 2 traction rollers 4 drive 5 motions of plate face, writing on the plate face is just wiped, and the dust under wiping falls in the dust box 8 of bottom, if separate Isolating Switch 7, the plate face is left in snag, and writing is just preserved by excellent.

The utlity model has following advantage: one, because blackboard eraser, dust box and plate face One is installed, and the plate face rolls, and writing is wiped on the side plate face of face wall guarantees indoor nothing Dust from flying; Two, use general blackboard, the teacher need wipe writing and write, and waste is big The amount time, and Rolling blackboard just can interior cleaner plate of short time by control motor, blackboard eraser Face is saved time in classroom, relatively prolongs hours of instruction; Three, rolling plate face is the fixed head face Twice, strengthened the utilization rate of plate face.

Claims

1, a kind of new-type rolling blackboard, comprise plate face (5), blackboard eraser (6), it is characterized in that: plate face (5) cover of tubular stretches tight and is being fixed on two roller bearings (4) of body of wall, speed governing two-way switch (1) control motor (2) moves through belt (3) traction rollers (4), Isolating Switch (7) realization snag on the blackboard eraser (6) separates or contact with plate face (5), dust box (8) is positioned at the below of blackboard eraser (6), the gap location of sealing strip (9) sealing plate face and body of wall.