CN2071586U - Chalk holder - Google Patents

Abstract

Disclosed is a chalk clamp, belonging to the field of stationery articles. The chalk clamp is composed of a clamp shell, a compression spring, a torsional spring and rivets. A chalk is arranged into the chalk clamp, and teachers can write on a blackboard by holding the chalk clamp. The chalk is gradually shortened, and when the tail end of the chalk clamp is in turn pinched, the chalk is gradually extended. With the chalk clamp, the fingers of teachers do not touch the chalk for a long time, so that the fingers are not easy to slit, and thus the utility model can protect the hands of teachers.

Description

Chalk holder

A kind of chalk folder belongs to the cultural goods field.

Now teacher is that hand is directly being held chalk writing board and drilled on class, has been stained with a lot of chalk dusts on hand, and particularly teacher Yi Zaocheng pointed drying and split winter.

The purpose of this utility model provides a kind of chalk folder, makes teacher give a lesson clipboard when drilling, and finger does not directly contact chalk, reaches protection teacher's hand.

The utility model sees accompanying drawing for details, and Fig. 1 is a front view, and Fig. 2 is a cutaway view.

The utility model is made up of folder shell 1, rivet 2, cylindroid helical-coil torsion spring 3, cylindroid helical-coil compression spring 4. Folder shell 1 is involutory by two lobes, and interior table is conical. During use, chalk 5 Compress Springs 4 are put in the chalk folder, chalk is clamped under the twisting force of torsionspring 3 by folder shell 1. When teacher's clipboard was drilled, hand just can be held folder shell 1 and carry out, and finger has not just directly contacted with chalk. Chalk 5 shortens when writing gradually, and 1 tail end will be pinched as long as teacher will be pressed from both sides shell, just under the thrust of Compress Spring 4 protruding one section in chalk, and the length of stretching out can be as required, pinches one by one and reach, thereby realize the purpose of this utility model.

The utility model has the advantages that: simple in structure, easy to use, reach the hand of protecting teacher.

Embodiment 1 of the present utility model, as accompanying drawing 1, accompanying drawing 2, material therefor can all be a metal, also folder shell 1, rivet 2 can be made plastic member.

Embodiment 2 of the present utility model can make the double-ended chalk folder.With reference to the accompanying drawings, a wherein lobe that will folder shell 1 extend corresponding one section round about, and it is conjuncted to become rigidity, other in addition parts do not change installing at double.But the chalk of two kinds of different colours of the double-ended chalk of making like this folder clamping, teacher also can be used as the religion rod at school the time simultaneously, dual-purpose chalk folder.

Claims (2)

1, a kind of chalk of being made up of folder shell 1, rivet 2, cylindroid helical-coil torsion spring 3 presss from both sides, and it is characterized in that pressing from both sides has cylindroid helical-coil compression spring 4 in the shell.

2, chalk folder according to claim 1, it is characterized in that pressing from both sides shell 1 is two lobes, clamps to show in the chalk position to conical.