CN202213381U

CN202213381U - Circulation type self-wiping blackboard

Info

Publication number: CN202213381U
Application number: CN201120365833XU
Authority: CN
Inventors: 陆勇星; 董志克; 章斌鑫
Original assignee: Jinhua Polytechnic
Current assignee: Jinhua Polytechnic
Priority date: 2011-09-07
Filing date: 2011-09-07
Publication date: 2012-05-09
Anticipated expiration: 2021-09-07

Abstract

The utility model relates to blackboards of teaching aids, and discloses a circulation type self-wiping blackboard, which mainly comprises a main support, a dust cover, a rotary frame, a blackboard, connecting pins, wiping cloth, adhesive tapes and a transmission system. The blackboard consists of a blackboard I and a blackboard II, the transmission system mainly comprises sprockets, rotating wheels, chains, a handle and a transmission shaft, the rotary frame is hinged to the front surface of the main support, the blackboard is connected with the chains by the connecting pins, the diameter of each connecting pin matches with the aperture of each link of the chains, the wiping cloth is connected to the back surface of the blackboard by the adhesive tapes, the blackboard is positioned in the rotary frame, and the sprockets, the rotating wheels and the chains of the transmission system are positioned on two inner side surfaces of the rotary frame. The circulation type self-wiping blackboard is simple in structure, chalk writing wiping area is large, and wiped dust can be hermetically stored in a closed space.

Description

Circulating automatic erasing blackboard

Technical field

The utility model relates to the blackboard of teaching aid, automatic blackboard cleaning in the particularly a kind of process that can utilize two blackboard cyclical-transformation positions, and can not take up the circulating automatic erasing blackboard that amounts of dust is flown upward.

Background technology

Blackboard is being continued to use as the conventional teaching apparatus always; Be because some characteristics in its succinct convenience and the teaching make the teacher like using; Even today of modern teaching technology prosperity, blackboard is also still auxiliary when using multimedia teaching uses, Zong particularly aged teacher likes to make blackboard.The defective of traditional blackboard is the physical and mental health that dust from flying influences people, also wants the look round for blackboard eraser sometimes, and the utility model designs in order to solve the traditional blackboard defective just, has better market prospect.

Summary of the invention

In order to address the above problem, the utility model provides a kind of circulating automatic erasing blackboard, through the position of cyclical-transformation up and down of two blackboards, can wipe the chalk writing of a blackboard simultaneously, can not take up amounts of dust again and fly upward.

The scheme that the utility model adopted is:

Circulating automatic erasing blackboard mainly is made up of main support, dust cover, rotating frame, blackboard, connecting pin, wiper, adhesive tape, transmission system; Said blackboard is made up of blackboard I and blackboard II; Said transmission system mainly is made up of sprocket wheel, runner, chain, handle and power transmission shaft, and said dust cover is positioned at said main support back, and said rotating frame is articulated in said main support front; Said blackboard is connected with said chain through said connecting pin; The diameter of said connecting pin and the aperture of said chain section match, and said wiper is connected in the back of said blackboard through said adhesive tape, and said blackboard is positioned at said rotating frame; Said handle is positioned at the said rotating frame outside, and the sprocket wheel in the said transmission system, runner, chain are positioned on two medial surfaces of said rotating frame.

The beneficial effect of the utility model is:

Said circulating automatic erasing blackboard simple structure, the facility of going up and down, said wiper is connected in the reasonable in design of said blackboard back with the adhesive tape formula, and the area of the chalk writing of wiping is big, and efficient is high; The dust of wiping can be sealed up for safekeeping in the space of a sealing, has significantly reduced flying upward of dust.

Description of drawings

Figure below in conjunction with the utility model further specifies:

Fig. 1 is said circulating automatic erasing blackboard structural representation;

Fig. 2 is said circulating automatic erasing blackboard outward appearance perspective view;

Fig. 3 is said circulating automatic erasing blackboard front appearance figure;

Fig. 4 is said transmission system enlarged diagram;

Fig. 5 is said blackboard trailing flank enlarged diagram.

Among the figure, 1. main support, 2. dust cover, 3. rotating frame, 4. wiper, 5. handle, 6. blackboard I, 7. blackboard II, 8. power transmission shaft, 9. chain, 10. connecting pin, 11. adhesive tapes.

The specific embodiment

Like Fig. 1 is said circulating automatic erasing blackboard structural representation, and said rotating frame (3) is articulated in said main support (1) front, sketch map when Fig. 1 is said rotating frame (3) unlatching, and said dust cover (2) is positioned at said main support (1) at the back.

Like Fig. 2 is said circulating automatic erasing blackboard outward appearance perspective view; Like Fig. 3 is said circulating automatic erasing blackboard front appearance figure; Be the sketch map of said rotating frame (3) when closing; Said blackboard is made up of blackboard I (6) and blackboard II (7), and said blackboard is positioned at said rotating frame (3), and said handle (5) is positioned at said rotating frame (3) outside.

Like Fig. 4 is said transmission system enlarged diagram; Said transmission system mainly is made up of sprocket wheel, runner, chain, handle and power transmission shaft, and the sprocket wheel in the said transmission system, runner, chain are positioned on two medial surfaces of said rotating frame, is connected the said transmission system of blackboard both sides by said power transmission shaft (8); When rotation said handle (5); Make through said power transmission shaft (8) said blackboard to be moved up and down the said transmission system synchronous operation of both sides reposefully that said blackboard is connected with said chain (9) through said connecting pin (10); The aperture of the diameter of said connecting pin (10) and said chain (9) joint matches, said chain (9) circulation sealing.

Like Fig. 5 is said blackboard trailing flank enlarged diagram, and said connecting pin (10) is positioned at the side of blackboard, and said wiper (4) is connected in the back of said blackboard through said adhesive tape.

During use; Rotate said handle (5), make through said power transmission shaft (8) to drive said chain (9) the synchronous circulation rotation of both sides said connecting pin (10) and do the turnover motion; Said blackboard is also done the turnover motion thereupon; In the time of always can working as said blackboard I and arrive peak, said blackboard II arrives minimum point, and at this moment said blackboard displays comprehensively and supplies to use.

Expired need wipe writing the time when blackboard uses, to have rotated said handle, the action that at this moment said blackboard I and blackboard II have front and back to shift one's position, this be because said connecting pin with the result of said chain rotation, the distance of said front and back conversion is with the diameter of sprocket wheel.Be rotated further said handle; After said blackboard I and blackboard II are overlapping; Utilize the said wiper of said blackboard back the writing on another piece blackboard is wiped or to be adsorbed, the gross thickness of said blackboard and wiper should satisfy said blackboard I and can closely contact when overlapping with blackboard II.The dust of being wiped is closed between blackboard back and the dust cover mostly, seldom can be disseminated to the outside, has played the effect of anti-flying dust.

Said handle can substitute with direct current generator, accomplishes above-mentioned manual work through the crawl direct current generator, can reduce labor intensity, and efficient is also higher.When needs are changed said wiper, open said rotating frame, can change together with said adhesive tape, cost is lower.

Claims

1. circulating automatic erasing blackboard; Mainly form by main support, dust cover, rotating frame, blackboard, connecting pin, wiper, adhesive tape, transmission system; Said blackboard is made up of blackboard I and blackboard II, and said transmission system mainly is made up of sprocket wheel, runner, chain, handle and power transmission shaft, it is characterized in that: said rotating frame is articulated in said main support front; Said blackboard is connected with said chain through said connecting pin, and the diameter of said connecting pin and the aperture of said chain section match.

2. circulating automatic erasing blackboard according to claim 1; It is characterized in that: said wiper is connected in the back of said blackboard through said adhesive tape; Said blackboard is positioned at said rotating frame, and the sprocket wheel in the said transmission system, runner, chain are positioned on two medial surfaces of said rotating frame.