CN2843874Y - Chalk sleeve - Google Patents

Abstract

The utility model relates to a chalk sleeve, which can sheathed with a chalk to write. The utility model is made of rubber, small convex knobs are arranged on the outer wall of a casing of the chalk sleeve and the middle bottom of the casing of the chalk sleeve is made into an extensible unevenness telescopic pipe. The matching of each part of fingers can hold the chalk in the chalk sleeve to write. Because the fingers are not directly contacted with the chalk, the chalk powder can not pollute the fingers.

Description

Chalk sleeve

Affiliated technical field

The utility model relates to a kind ofly can entangle the device that chalk is write.

Background technology

Since chalk came out, people directly arrested chalk with hand to write, because finger directly contacts with chalk, made finger be stained with the chalk powder when writing, and had polluted finger.

Summary of the invention

In order not make the chalk powder pollute finger, the utility model provides a kind of can entangle the chalk sleeve that chalk is write.

The technical scheme that its technical problem that solves the utility model adopts is: chalk sleeve adopts rubber to make, bossed goose pimples on the chalk sleeve outer shell outer wall, concavo-convex telescoping tube is arranged at the middle bottom of chalk sleeve shell, after chalk is packed into from running-on, grasp the chalk sleeve shell, slightly once firmly chalk being arrested.

The beneficial effects of the utility model are: when can conveniently write, do not polluted finger by the chalk powder, and simple in structure.

Description of drawings

Below in conjunction with accompanying drawing the utility model is further specified.

Accompanying drawing is a structural representation of the present utility model.

1. running-ons among the figure, 2. chalk sleeve shell, 3. concavo-convex telescoping tube, 4. base, 5. projection goose pimples.

The specific embodiment

In the accompanying drawings, the chalk sleeve shell of being made by rubber (2) is cylindric, on chalk sleeve shell (2) outer wall projection goose pimples (5) is arranged, and the middle bottom of chalk sleeve shell (2) is made into retractable concavo-convex telescoping tube (3).Chalk is packed into from running-on (1), adorns the chalk bottom earlier, and after packing into, the chalk bottom contacts with base (4).The inner diameter of running-on (1) is slightly larger than diameter at the bottom of the chalk, and base (4) to the length of running-on (1) slightly is shorter than chalk length.After chalk is packed into, the chalk top is exposed to outside the running-on (1), hold chalk sleeve shell (2) with thumb and forefinger, slightly once firmly catching chalk to write, after chalk outside being exposed to running-on (1) uses up, it is close to the centre of the palm that thumb and forefinger are held chalk sleeve shell (2), when base (4) is subjected to the centre of the palm thrust, thumb and forefinger one relax one's efforts slightly, after chalk promotes forward, some is exposed to outside the running-on (1) again, and thumb and forefinger are held chalk sleeve shell (2) once more and write.

Claims (3)

1. a chalk sleeve is made up of chalk sleeve shell, concavo-convex telescoping tube and base that rubber is made, and it is characterized in that: the chalk sleeve shell is cylindric, on mouth is arranged, the end, arranged down.

2. according to the chalk sleeve under the claim 1, it is characterized in that: the shell middle and lower part is processed to concavo-convex telescoping tube.

3. according to the chalk sleeve under the claim 1, it is characterized in that: the projection goose pimples is arranged on the chalk sleeve outer shell outer wall.

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