CN201070911Y - Clip-on chalk casing - Google Patents

Abstract

A clamp-type chalk cover is provide, which consists of two arced clamping sheets and a spring leaf arranged therebetween. After loosening the chalk cover, the two arced clamping sheets expand to contain chalks or to allow the chalks to slide up and down. When in use, the chalk is loaded inside the chalk cover with a small end part being exposed out of the chalk cover, then the chalk cover is handled by a hand with a certain clamping force on the two arced clamping sheets, thereby wiring with the small end part of the chalk. Therefore, the clamp-type chalk cover can protect the hand from being contaminated by the chalk and prevent the chalk from breaking.

Description

Folder formula chalk sleeve

Technical field

The utility model relates to a kind of time cover chalk device of writing chalk, especially presss from both sides the formula chalk sleeve.

Background technology

The teacher will hold chalk every day and write picture, so teacher's hand must be infected with chalk dust all day, in addition, and the frangibility of chalk own, the chalk that fractures is given to write and is made troubles, and has also increased the chalk head thereupon, thereby has wasted chalk.

The utility model content

The task of the utility model folder formula chalk sleeve is at above-mentioned defective, designs a kind of hand of writing chalk that can make and keeps clean, can save chalk again, does not also influence and writes.

The technical solution of the utility model is: connected by two identical arc clips of shape size, a spring leaf is set between two arc clips.When unclamping hand, two arc clips are opened, chalk is put into chalk sleeve, and an end of chalk sleeve is surplus goes out a little budgust pen, hold chalk sleeve then and two arc clips are slightly exerted pressure, go out this little budgust pen and write picture with surplus.After this little budgust pen used up, pine was loosed one's grip, and two arc clips open, and make chalk in the chalk sleeve to lower slider, thereby the chalk sleeve lower end had been exposed a little budgust pen again, and then continued to write picture with just exposing outer this little budgust pen of chalk sleeve.

The utility model beneficial effect is that when writing chalk, hand can be infected with chalk dust, saves chalk, and is easy to use, makes easy.

Description of drawings

It among the figure front view of the present utility model

Among the figure, 1, arc clip, 2, spring leaf, 3, chalk, 4, the junction.

The specific embodiment

In the drawings, two arc clips 1 connect 4, a spring leaf 2 is set between two arc clips 1, when unclamping hand, two arc clips 1 is opened, chalk 3 is put into chalk sleeve, and an end is surplus to go out about 2 a centimetres little budgust pen, and then, hand is held chalk sleeve, and two arc clips 1 are slightly exerted pressure, go out this little budgust pen and write picture with surplus.Treat surplus go out this little budgust pen and use up after, pine is loosed one's grip again, and two arc clips 1 are opened, thereby chalk 3 is to lower slider, and the chalk sleeve lower end is exposed a little budgust pen again, holds chalk sleeve again, and two arc clips are slightly exerted pressure, continue to write picture with just exposing outer this little budgust pen of chalk sleeve.So go down, use up up to this chalk 3, hand still keeps totally not being infected with chalk dust.

Claims (2)

1. a folder formula chalk sleeve is characterized in that being connected and composed by two arc clips.

2. according to the described folder formula of claim 1 chalk sleeve, it is characterized in that between two arc clips, being provided with spring or spring leaf.