CN201148067Y

CN201148067Y - Blackboard

Info

Publication number: CN201148067Y
Application number: CNU2007200703515U
Authority: CN
Inventors: 陆婉根; 范思益; 陆以锋
Original assignee: Shanghai Fengjing Middle School
Current assignee: Shanghai Fengjing Middle School
Priority date: 2007-05-29
Filing date: 2007-05-29
Publication date: 2008-11-12
Anticipated expiration: 2017-05-29

Abstract

The utility model relates to a blackboard, including a base plate (1). The two sides of the base plate (1) are provided with two rotatable shafts: a first rotating shaft (3) which is arranged on the left side to control the movement of a screen (2) and a second rotating shaft (4) which is arranged on the right side to clean and roll up the screen (2). The blackboard has the beneficial effect that the blackboard does not have to be cleaned in class and the indoor cleanness can be ensured.

Description

Blackboard

Technical field

The utility model relates to a kind of blackboard, relates in particular to a kind of blackboard surface structure.

Background technology

Present blackboard, every day, every class will be wiped, and the ash that erases the board is a lot, unhealthful.How designing a kind of blackboard of exempting to wipe on the classroom is the problem that the science and technology personnel will solve.

Summary of the invention

The utility model technical issues that need to address have provided a kind of blackboard, are intended to solve the above problems.

In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:

The utility model comprises: base plate; Two rotatable shafts of two side fixed in position at described base plate: first rotating shaft that the screen controlled on the left side moves, the arrangement on the right cleaning screen, and will clean screen and roll together second rotating shaft.

Compared with prior art, the beneficial effects of the utility model are: need not erase the board on the classroom, guarantee indoor cleannes.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

The specific embodiment

Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:

As seen from Figure 1: the utility model comprises: base plate 1; Two rotatable shafts of two side fixed in position at described base plate 1: first rotating shaft 3 that the screen controlled on the left side 2 moves, the arrangement on the right cleaning screen 2, and will clean screen 2 and roll together second rotating shaft 4;

Describedly control first rotating shaft 3 that screen 2 moves and on first rotating shaft 3 or on its next door, to settle the switch 5 that to control screen 2 displacements.

The utility model is provided with two roll devices, the reel on the right is the rubber and plastic rubber that can draw of writing of the cleaning that intervolves, length overall does not wait for 100 meters to 200 meters long, thick 1 millimeter of rubber and plastic rubber, the reel on the left side is to intervolve to write the rubber and plastic rubber of having drawn, the spool shaft top on the left side is equipped with tumbler, tumbler is controlled by eletric button, is made up of 1 to 7 numerical control button, changes by 1 and closes 0.5, rice, rotate 2.5 meters by 5, rotate 3.5 meters by 7, between the central point of two spool shaft at a distance of 3.5 meters, be that length of run reaches 3.5 meters, 1.5 meters of reel axial lengths, rubber width account for 1.2 meters, and the area of expansion reaches 4.2 square metres, the stainless sheet steel of pad one similar size makes it to help writing on rubber and drawing behind 4.2 square metres of rubber that launch.The rubber color is grass green.If a whole volume write picture full after, can shirk and fall into that row is whole to be cleaned.Put the rubber and plastic rubber after cleaning again, go round and begin again.

Claims

1. a blackboard comprises: base plate (1); It is characterized in that: at two rotatable shafts of two side fixed in position of described base plate (1): first rotating shaft (3) that the screen controlled on the left side (2) moves, the arrangement on the right cleaning screen (2), and will clean screen (2) and roll together second rotating shaft (4).

2. blackboard according to claim 1 is characterized in that: the switch (5) that can control screen (2) displacement be gone up or be settled to described mobile first rotating shaft (3) of screen (2) of controlling can at first rotating shaft (3) by it.