CN201960915U

CN201960915U - Chalk write

Info

Publication number: CN201960915U
Application number: CN2011200384535U
Authority: CN
Inventors: 吴秋晨
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-02-15
Filing date: 2011-02-15
Publication date: 2011-09-07
Anticipated expiration: 2021-02-15

Abstract

A chalk write belongs to teaching supplies and mainly used for solving the problem that since a teacher holds a piece of chalk by a hand directly in class, insanitation and harms to skins can be caused. The chalk write is characterized in that the chalk write comprises a pen tube and a rotary tube, wherein one end of the pen tube is open, a movable pushing piece is arranged inside the other end of the pen tube; a rotating shaft is arranged on the end surface of the pushing piece, which is positioned on the outer side of the pen tube; external threads are formed on the side wall of the rotating shaft; the rotary tube is sleeved on the outer side of the rotating shaft; the rotary tube is in threaded fit with the rotating shaft; and clips are symmetrically arranged on the inner surface of the side wall at the open end of the pen tube. When the chalk write is used, a piece of chalk can be inserted into the pen tube, so that hands are no longer in contact with the chalk and prevented from being stained with chalk dust.

Description

A kind of chalk Write

Technical field

The utility model relates to a kind of realia, specifically a kind of chalk Write.

Background technology

Teachers have gone up a class at every turn, and completely hand all is a chalk dust, and are not only unhygienic, influence attractive in appearancely, and chalk dust can stimulate hand skin, goes down for a long time, are unfavorable for that teachers' is healthy.

The utility model content

The purpose of this utility model is to provide a kind of chalk Write, chalk can be placed in the chalk Write to use, and avoids hand to be stained with chalk dust.

The technical scheme in the invention for solving the technical problem is: a kind of chalk Write, it is characterized in that, comprise the shaft of a writing brush and coil, the described shaft of a writing brush one end opening, the end face that the push jack of the built-in activity of the other end, described push jack are positioned at the shaft of a writing brush outside is provided with a rotating shaft, and the sidewall of described rotating shaft is provided with external screw thread, the outside of rotating shaft is equipped with coil, and described coil and rotating shaft form threaded engagement; The side wall inner surfaces symmetry of shaft of a writing brush openend be provided with intermediate plate.

The beneficial effects of the utility model are: use this chalk Write, chalk can be inserted in the shaft of a writing brush, hand does not directly contact with chalk, avoids chalk dust is stained with to hand, and health and effectively protect hand skin is easy to use more.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Among the figure: 1 shaft of a writing brush, 2 coils, 3 push jacks, 4 rotating shafts, 5 intermediate plates.

The specific embodiment

As shown in Figure 1.A kind of chalk Write, comprise the shaft of a writing brush 1 and coil 2, the described shaft of a writing brush 1 one end openings, the push jack 3 of the built-in activity of the other end, the end face that described push jack 3 is positioned at the shaft of a writing brush 1 outside is provided with a rotating shaft 4, the sidewall of described rotating shaft 4 is provided with external screw thread, and the outside of rotating shaft 4 is equipped with coil 2, and described coil 2 forms threaded engagement with rotating shaft 4; The side wall inner surfaces symmetry of the shaft of a writing brush 1 openend be provided with intermediate plate 5.

During use, chalk is inserted in the shaft of a writing brush 1, make intermediate plate 5 clamp chalk, to different direction rotation coils 2, rotating shaft 4 can be moved at above-below direction, drives stretching out and indentation of push jack 3 control chalks.When chalk runs low, it is extracted out, insert new chalk and get final product.

Claims

1. chalk Write, it is characterized in that, comprise the shaft of a writing brush and coil, the described shaft of a writing brush one end opening, the end face that the push jack of the built-in activity of the other end, described push jack are positioned at the shaft of a writing brush outside is provided with a rotating shaft, and the sidewall of described rotating shaft is provided with external screw thread, the outside of rotating shaft is equipped with coil, and described coil and rotating shaft form threaded engagement; The side wall inner surfaces symmetry of shaft of a writing brush openend be provided with intermediate plate.