CN202965624U - Mobile chalk device - Google Patents

Abstract

The utility model belongs to the school article field, and particularly relates to a mobile chalk device. The mobile chalk device is mainly targeted on the problem that chalk heads cannot be completely run out. The mobile chalk device comprises a pushing rod, a barrel and chalks, the pushing rod is arranged inside the barrel and is flexibly connected on the inner wall of the barrel in a spiral mode, and the chalks are arranged inside the barrel and the diameter of the barrel is matched with the chalks. Compared with the prior art, the chalks are arranged inside the mobile chalk device, after a section of chalk is used, a new section of the pushing rod can be screwed out, and the chalks are ejected, and therefore the chalks can be utilized fully, and waste of resources is reduced. The mobile chalk device has the advantages of being convenient and simple to use, and meanwhile further capable of effectively saving cost, and protecting environment.

Description

A kind of Propelling chalk device

Technical field

The utility model belongs to a kind of study article field, is specifically related to a kind of Propelling chalk device.

Background technology

Chalk is the instrument that widely uses in daily life, generally is used for book and writes on the blackboard.Often using when last due to too short, can't re-use, the way of processing just when having thrown away of rubbish, can cause the very large wasting of resources mostly like this, also is unfavorable for the protection of environment simultaneously.

Summary of the invention

The purpose of this utility model is the problem that can't re-use for existing chalk end and a kind of easy to use, Propelling chalk device that chalk is exhausted is provided.

The technical scheme that adopts for achieving the above object is: a kind of Propelling chalk device, comprise push rod 1, cylinder 2, chalk 3, described push rod is arranged in cylinder and with the mode of spiral and cylinder inwall and is flexibly connected, and chalk is placed in cylinder and diameter and the chalk of cylinder are complementary.

Compared with prior art, due to the utility model, chalk is arranged in the chalk device of flexible connection, with one section with push rod toward going out to twist one section, will eject chalk, so just can the abundant whole utilizations of chalk, reduce the wasting of resources; Use also very conveniently, simple, simultaneously also effectively saved cost, protected environment.

Description of drawings

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

The specific embodiment

As shown in Figure 1: a kind of Propelling chalk device, comprise push rod 1, cylinder 2, chalk 3, described push rod is arranged in cylinder and with the mode of spiral and cylinder inwall and is flexibly connected, and chalk is placed in cylinder and diameter and the chalk of cylinder are complementary.

When using the utility model, push rod one to be twisted gently, chalk just can be left one section in the past, waited and one twisted that the push rod chalk is past again leaves one section gently again after being finished, and was very easy to use, simple, both saved cost, protected again environment.

Claims (1)

1. Propelling chalk device is characterized in that: comprise push rod (1), cylinder (2), chalk (3), described push rod is arranged in cylinder and is flexibly connected with the cylinder inwall in the mode of spiral, and chalk is placed in cylinder and diameter and the chalk of cylinder are complementary.

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