CN204749627U

CN204749627U - Blackboard

Info

Publication number: CN204749627U
Application number: CN201520377747.9U
Authority: CN
Inventors: 丁洪斌
Original assignee: Hangzhou Huayu Teaching Equipment Co Ltd
Current assignee: Hangzhou Huayu Teaching Equipment Co Ltd
Priority date: 2015-06-03
Filing date: 2015-06-03
Publication date: 2015-11-11
Anticipated expiration: 2025-06-03

Abstract

The utility model discloses a blackboard, including the body, the body includes the writing surface and the back, and the body is the cavity setting, and the writing surface be ground glass, and body hollow portion sets up the curtain that has the line check, and the hollow portion of body extends in the body two relative limits and forms two openings, corresponds two open position on the body and is provided with home roll axle and vice roller respectively, and the curtain twines on home roll axle and pair roller, is provided with reset spring on the vice roller, the epaxial drive arrangement that is connected with of home roll, the utility model discloses need not to use chalk alright the required line check of production not only to practice thrift the chalk, avoid no powder, protect teachers and students' health, and the use is very convenient.

Description

Blackboard

Technical field

This practicality system drives in the wrong direction and belongs to teaching aid field, relates to a kind of blackboard in particular.

Background technology

Blackboard not refers in particular to the plate face of black, traditional sense is said it be one can the plane of repeated writing, plate face is hard, is used for teaching.

Student is in learning English, for English word memory and write extremely important, teacher needs correct guiding and demonstration in teaching, and in word is resolved, usual teacher adopts chalk and ruler first on blackboard, to draw four equidistant line lattice, then write words in four line lattice, drawing four line lattice not only to bother but also time-consuming, is not very standard usually, can not give student direct vision thoughts and feelings, affect the learning efficiency of student, be unfavorable for progress and the effect of teaching.

Need to recite words at primary school student, and need on blackboard, utilize matts to carry out carefully and neatly done writing Chinese characters, this just needs first to draw several matts with chalk on blackboard, write again, wipe again after writing and attend class, the word that at every turn writes all needs again to draw again, not only wastes chalk, and loses time to bother very much.

Application number be 201420650689.8 Chinese patent disclose a kind of Novel English teaching blackboard, comprise blackboard body, line drawing ruler, be arranged on the slide block on described line drawing ruler, be arranged on the chalk clamp on described slide block in addition, and the snap ring be enclosed within outside described chalk clamp, it is characterized in that: on described line drawing ruler, be provided with controller, micromachine is provided with at described line drawing ruler top, electric expansion bar is provided with in described slide block, push pedal is provided with in described electric expansion bar front end, pressure sensor is provided with between described push pedal and described electric expansion bar, described push pedal is connected with described chalk clamp by spring, at input connection control handle and the described pressure sensor of described controller, output is connected with described micromachine and electric expansion bar, the utility model effectively solves the incomplete situation of setting-out in actual applications, not only alleviate the workload of teacher, but also the efficiency greatly improved on classroom.

Although picture four line lattice can be carried out, cannot matts be drawn, and all need to use chalk to carry out picture, waste chalk at every turn, and can dust be produced.

Utility model content

For the deficiencies in the prior art, the utility model provides a kind ofly not only saves chalk without the need to using chalk just can produce required line lattice, avoids producing dust, and blackboard very easy to use.

For achieving the above object, the utility model provides following technical scheme: a kind of blackboard, comprises body, and body comprises writing surface and the back side, and body is that hollow is arranged, and writing surface is ground glass, and body hollow space is provided with the curtain of line lattice.

By adopting technique scheme, ground glass has light transmission, when looking at the blackboard from the front of body, can pass through ground glass and see line lattice on curtain, student just can write by control line lattice on ground glass, without the need to by drawing with coloured chalk outlet lattice, save chalk, and can not dust be produced.

The utility model is set to further: the hollow space of body to extend in body two relative limits and forms two openings, and on body, corresponding two aperture positions are respectively arranged with home roll axle and secondary roll shaft, and curtain is wound on home roll axle and secondary roll shaft.

By adopting technique scheme, curtain is wound on home roll axle and secondary roll shaft, then by rotation home roll axle or secondary roll shaft, curtain is moved at the hollow space of body, the length of such curtain is longer, multiple line lattice can be set on the diverse location of curtain, change according to the line lattice type of required use at any time to facilitate, the scope of application is wider.

The utility model is set to further: secondary roll shaft is provided with back-moving spring, and home roll axle is connected with drive unit.

By adopting technique scheme, home roll axle can be driven to carry out rotating and receive or put curtain by drive unit, home roll axle receive curtain be wound around on home roll axle by curtain time, secondary roll shaft release curtain meanwhile back-moving spring forms elastic potential energy; When need to use on home roll axle, institute is wound around the line lattice of curtain time, relieving drive unit, curtain is wound around by back-moving spring by secondary for driving roll shaft on secondary roll shaft.

The utility model is set to further: drive unit is motor.

By adopting technique scheme, driven by motor home roll axle carries out rotation and carrys out rolling curtain, easy to use, without the need to manpower.

The utility model is set to further: line lattice are four line lattice or matts.

By adopting technique scheme, four Xian Ge sections are used for writing English word, and matts can be used to writing Chinese characters, and the scope of application is more extensive, can remove each trouble of drawing matts from.

The utility model is set to further: curtain is provided with clear area.

By adopting technique scheme, namely clear area makes to look over internal wireless lattice by writing surface, is the part of blank, can carries out writing of the image of any word, can not because of the impact by ruling.

Compared with prior art, the utility model blackboard not only saves chalk without the need to using chalk just can produce required line lattice, avoids producing dust, and very easy to use.

Accompanying drawing explanation

Fig. 1 is the three-dimensional structure diagram of the utility model blackboard;

Fig. 2 is the side view of this use new type blackboard;

Fig. 3 is the cross section view at A-A place in Fig. 2;

Fig. 4 is the enlarged drawing in B portion in Fig. 3;

Fig. 5 is the enlarged drawing in C portion in Fig. 3.

Reference numeral: 1, body; 12, writing surface; 16, hollow; 2, secondary roll shaft; 3, home roll axle; 5, motor; 6, curtain; 61, line lattice; 63, back-moving spring.

Detailed description of the invention

Referring to figs. 1 through Fig. 5, the embodiment of the utility model blackboard is described further.

A kind of blackboard, comprise body 1, body 1 comprises writing surface 12 and the back side, body 1 is arranged in hollow 16, writing surface 12 is ground glass, body 1 hollow 16 part is provided with the curtain 6 of line lattice 61, hollow 16 part of body 1 to be extended in body 1 two relative limits and is formed two openings, on body 1, corresponding two aperture positions are respectively arranged with home roll axle 3 and secondary roll shaft 2, curtain 6 is wound on home roll axle 3 and secondary roll shaft 2, line lattice 61 are four line lattice 61 or matts, it can certainly be the pattern of any shape, as flower or animal, student can be made to learn to describe paintings on blackboard, curtain 6 is provided with clear area, i.e. wireless lattice 61 part.

As shown in Figure 1, the present embodiment preferred hollow 16 part is positioned at the right side of blackboard, and opening is in distributing up and down, secondary roll shaft 2 is positioned at upside opening part, home roll axle 3 is positioned at open lower side place, and curtain 6 is wound on home roll axle 3 and secondary roll shaft 2, is moved up and down by the drive of home roll axle 3 and secondary roll shaft 2.

Home roll axle 3 can be driven to carry out rotating and receive or put curtain 6 by drive unit, home roll axle 3 receive curtain 6 be wound around on home roll axle 3 by curtain 6 time, secondary roll shaft 2 discharge curtain 6 meanwhile back-moving spring 63 form elastic potential energy; When to need to use on home roll axle 3 be wound around the line lattice 61 of curtain 6 time, decontrol drive unit, back-moving spring 63 will drive secondary roll shaft 2 to be wound around on secondary roll shaft 2 by curtain 6, because diverse location on curtain 6 has different line lattice 61, when curtain 6 moves up and down, namely can pass through line lattice 61 difference that writing surface 12 is seen, to adapt to different applications.

The preferred drive unit of the present embodiment is that motor 5 drives home roll axle 3 to carry out rotation to carry out rolling curtain 6, easy to use, without the need to manpower.

The above is only preferred embodiment of the present utility model, protection domain of the present utility model be not only confined to above-described embodiment, and all technical schemes belonged under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, do not departing from the some improvements and modifications under the utility model principle prerequisite, these improvements and modifications also should be considered as protection domain of the present utility model.

Claims

1. a blackboard, comprise body, body comprises writing surface and the back side, it is characterized in that: described body is that hollow is arranged, described writing surface is ground glass, and described body hollow space is provided with the curtain of line lattice, and the hollow space of described body to extend in body two relative limits and forms two openings, on described body, corresponding two aperture positions are respectively arranged with home roll axle and secondary roll shaft, and described curtain is wound on home roll axle and secondary roll shaft.

2. blackboard according to claim 1, is characterized in that: described secondary roll shaft is provided with back-moving spring, and described home roll axle is connected with drive unit.

3. blackboard according to claim 2, is characterized in that: described drive unit is motor.

4. according to the blackboard in claim 1-3 described in any one, it is characterized in that: described line lattice are four line lattice or matts.

5. blackboard according to claim 4, is characterized in that: described curtain is provided with clear area.