CN2313756Y

CN2313756Y - Cyclic blackboard

Info

Publication number: CN2313756Y
Application number: CN 97229270
Authority: CN
Inventors: 甘毛文
Original assignee: Individual
Current assignee: Individual
Priority date: 1997-10-14
Filing date: 1997-10-14
Publication date: 1999-04-14
Anticipated expiration: 2007-10-14

Abstract

The utility model relates to a cyclic blackboard. The utility model is composed of a frame (1), blackboard erasers (2), a drum (3), blackboard cloth (4) and a blackboard pad (5). A writing face of the blackboard cloth (4) relieved by the blackboard pad (5) can be arbitrarily write or draw by chalks. The writing face can be moved upwards, upwards or downwards or backwards by rotating the drum (3), and can also be circularly rotated. The drum is rotated when handwriting needs erasing, the face with handwriting is caused to be backwards rotated, the handwriting is automatically erased by the blackboard erasers (2) arranged on the upper part, the lower part and the back part of the face, and a clean face is rotated to the writing face. The utility model has the advantages that labor intensity of teachers is lightened and chalk dust pollution is reduced. The utility model is helpful for teaching and learning.

Description

Circulating blackboard

The utility model relates to a kind of writing and drawing article, in particular for the blackboard and the blackboard eraser thereof of teaching.

Blackboard is a kind of carrier that is widely used in classroom impart knowledge and information, and available chalk is write in the above and drawn.Current, traditional blackboard for education is very simple and crude, just coats black paint on a hard plate or smooth wall and gets final product.Following shortcoming is in use arranged: 1, inconvenience wiped in writing, and chalk dust is seriously polluted when manually wiping writing, influences the healthy of teachers and students.When 2, writing at the high or low place of blackboard, the teacher will on tiptoe or bend over to write, and is very arduous.3, plate face utilization rate is not high, and the teacher is when writing, and the health shelves have been lived the writing of writing earlier, and the student watches inconvenience.

The task that the utility model will be separated provides a kind of blackboard, can write and draw in the above, and it is movable writing the space of a whole page, and the space of a whole page can be recycled, and when changing the space of a whole page, also can wipe chalk writing not automatically.

For finishing above-mentioned task, the technical solution of the utility model is: at a rectangular frame two two cylinders are set, its pedestal is located on the bearing of two frames, and cylinder can rotate flexibly; Be with the blackboard cloth of a circle sealing on two cylinders, rotate one of them cylinder, blackboard cloth also rotates another cylinder as driving-belt.Also be fixed with a hard blackboard pad on framework, its plane is pressed close to mutually with the back side of writing blackboard cloth cover is parallel, promptly blackboard cloth is set off, and to keep the smooth and hardness of blackboard cloth writing surface, is convenient to write.

Upper and lower and back at blackboard cloth writing surface is provided with blackboard eraser, traverse and be pressed on the writing surface, width equates with blackboard cloth basically, its softness is flexible, abut against on the writing surface, in blackboard cloth scrolling, the chalk writing on the blackboard cloth can be wiped clean, the blackboard eraser that is located at the back can be one or more.

Adopt the blackboard and the blackboard eraser of above structure, the user can make calligraphy and painting with chalk having on the blackboard cloth that sets off, when writing, high or low place needn't on tiptoe or bend over, as long as rotary drum is regulated, the space of a whole page upwards or down can be moved, make it to be on the position of conveniently writing.Calligraphy and painting not forwards it to back, in rotation process, be located at the space of a whole page up and down and the blackboard eraser of back automatically person's handwriting is wiped clean, and the writing face of forwarding to is the clean space of a whole page of a width of cloth.This health to teaching, teacher and student is highly significant.

Below in conjunction with accompanying drawing, the utility model is described in further detail.

Shown in Figure 1, be front view of the present utility model.

Shown in Figure 2, be side view of the present utility model.

In the face front view of Fig. 1, two cylinders 3 are arranged on the two in the rectangular frame 1, the axle of cylinder is installed on the framework, cylinder can rotate flexibly, be with the blackboard cloth 4 of a circle sealing on two cylinders 3, it is as driving-belt, when rotating a cylinder, another cylinder also rotates thereupon, and blackboard cloth 4 is made shuttling movement.Pasting the back side of blackboard cloth 4 positive writing surfaces at the middle part of framework 1, be provided with a smooth hard blackboard pad 5 and set off, so that write.Installing hole 6 on the framework 1 is used for integral installation on the wall.

By in the side view of Fig. 2 as can be known, the upper and lower and back being close to blackboard cloth 4 writing surfaces is provided with soft resilient blackboard eraser 2, for wiping person's handwriting more totally, the blackboard eraser of back can be provided with several.

During use, if on blackboard cloth 4 writing surfaces writing is arranged, then first rotary drum 3, blackboard cloth 4 is made shuttling movement, and blackboard eraser 2 is wiped clean chalk writing, and forwarding on the positive writing surface then is the clean space of a whole page of a width of cloth, can write.In writing, can transfer high or low or forward the back to and wipe writing writing breadth, this all realizes by rotary drum.In force, rotary drum no matter be manual or electronic control so long as adopted this blackboard structure, be protection domain of the present utility model.

Claims

1. circulating blackboard comprises the book number space of a whole page, support and chalkboard eraser, it is characterized in that: blackboard surface is circulating structure, is the sealing blackboard cloth (4) of a snare on two cylinders (3); Cylinder (3) is located on the interior both sides of framework (1); Write the upper and lower end and the back of the space of a whole page, be provided with the blackboard eraser (2) of being close to writing surface.

2. circulating blackboard according to claim 1 is characterized in that: the space of a whole page of writing of blackboard cloth (4) has a smooth hard blackboard pad (5) to set off behind.

3. circulating blackboard according to claim 1 is characterized in that: at the blackboard eraser of writing space of a whole page back (2) one or more can be set.