CN203110662U

CN203110662U - Push-pull type blackboard

Info

Publication number: CN203110662U
Application number: CN 201320075737
Authority: CN
Inventors: 苏贻淑; 郭全仕; 梁允莲; 司桂香; 张永竹; 庞振洲; 崔久平; 魏嘉
Original assignee: 魏嘉
Priority date: 2013-02-19
Filing date: 2013-02-19
Publication date: 2013-08-07
Anticipated expiration: 2023-02-19

Abstract

A push-pull type blackboard is composed of two small blackboard bodies, a large blackboard body, a group of inner slide rails and a group of outer slide rails. An original integral blackboard body is divided into three parts according to the proportion of 1:1:2, the two small blackboard bodies (1) are located in the outer slide rails (3), the large blackboard body (2) is located in the inner slide rails (4), and the small blackboard bodies and the large blackboard body can be respectively and freely pushed and pulled along the outer slide rails and the inner slide rails. When the two small blackboard bodies (1) are full of words, the two small blackboard bodies (1) can be simultaneously pushed or pulled to one side of the blackboard and can also be pushed or pulled to two sides of the blackboard; and when the large blackboard body (2) is full of words, whether the large blackboard body (2) is pushed or pulled is decided according to conditions reflected by students, and therefore the students on two sides of the front row of a classroom can clearly see the words on one side, far away from the students, of the blackboard.

Description

A kind of Push-pull blackboard

Technical field

The utility model relates to a kind of Push-pull blackboard.

Background technology

The blackboard of middle and primary schools' use at present generally is an integral body, and regional at the majority of China at present, along with removing school and class, school is increasing, and class is more and more, and the student's quantity in the class is also more and more, and the classroom still is original classroom size, the student is merely able to toward the position, dais draw close, and the class that has reaches 60-80 people, and front-seat student is merely able to see the writing on oneself side and the middle blackboard, writing away from the blackboard of oneself side does not just see Chu, even cannot see.

Summary of the invention

For the student who overcomes both sides, existing classroom does not see Chu away from the deficiency of the blackboard of oneself side, a kind of Push-pull blackboard of special invention.

Technical scheme

A kind of Push-pull blackboard is made up of three blackboards of size and about two groups of slideways.An original whole blackboard, be divided into three parts according to 1:1:2, the blackboard of two small sizes is 1. at skin, and a large-area blackboard is 2. at nexine, outer small blackboard the slideway in the outside 3. in, the big blackboard of nexine the slideway of inboard 4. in, can be along any push-and-pull of slideway separately.

Beneficial effect

This Push-pull blackboard can the classmate of front-seat both sides, classroom can be seen clearly away from the writing on the blackboard of oneself side along slideway push-and-pull easily.

Description of drawings

Fig. 1 is Push-pull blackboard overall appearance figure

1, blackboard 1. 2, blackboard 2. 3, outside slideway 3. 4, inboard slideway 4.

The specific embodiment

Two small blackboards 1. the outside slip road 3. in, big blackboard 2. inboard slideway 4. in.Big small blackboard all is placed in the middle of the classroom at ordinary times, when with blackboard 2. 1. blackboard write Man Houzai.

When blackboard 1. write full after, both sides of the blackboard of push-and-pull simultaneously can be distinguished the both sides of push-and-pull blackboard again, allows the classmate of both sides, classroom can both see writing on the blackboard clearly.

2. write situation that Man Houzai reflects according to classmates when blackboard and whether determine the push-and-pull blackboard 2., in order to allow the classmate of both sides, classroom all see writing on the blackboard clearly.

Claims

1. Push-pull blackboard, formed by three blackboards of size and about two groups of slideways, it is characterized in that: an original whole blackboard, be divided into three parts according to 1:1:2, the blackboard of two small sizes is 1. at skin, a large-area blackboard is 2. at nexine, outer small blackboard the slideway in the outside 3. in, the big blackboard of nexine the slideway of inboard 4. in, three blackboards can be along any push-and-pull of slideway separately.