CN201769504U

CN201769504U - Telescopic chalk

Info

Publication number: CN201769504U
Application number: CN2010202443798U
Authority: CN
Inventors: 孙晓蕊
Original assignee: Shanghai Jiading Nanxiang Primary School
Current assignee: Shanghai Jiading Nanxiang Primary School
Priority date: 2010-06-30
Filing date: 2010-06-30
Publication date: 2011-03-23
Anticipated expiration: 2020-06-30

Abstract

The utility model discloses a telescopic chalk which comprises a chalk body, a hollow shell and a hair brush, wherein a chalk sleeve is sheathed at one end of the chalk body; the chalk sleeve is provided with a threaded boss; a threaded groove is arranged in the hollow shell; the threaded groove is threaded with the threaded boss; and the hair brush is arranged at the end part of the hollow shell, which is not connected to the chalk sleeve. The telescopic chalk has the advantage of being novel in design, in the use process of the chalk, not only preventing the hand from being in direct contact with the chalk to dirt the hand, but also resulting in complete use of the chalk to reduce unnecessary waste, being relatively simple in manufacturing, and facilitating the popularization and the mass production of the products.

Description

A kind of flexible chalk

Technical field

The utility model relates to a kind of chalk, relates in particular to a kind of flexible chalk.

Background technology

Chalk is an indispensable teaching instrument in the middle of the school eduaction teaching.Nowadays, chalk also has a variety of, coloured chalk, dustless chalk or the like is arranged, and all emerges in an endless stream on pattern and function.But when the user is easy to the hand of making dirty when using chalk, and in writing process along with the use of chalk, shorter and shorter, use very inconveniently, throw away and cause waste.

The utility model content

A kind of flexible chalk of the utility model provides a kind of chalk that carries Telescopic, both can avoid the hand of making dirty, can allow chalk use fully again.

For achieving the above object, the technical scheme taked of the utility model is:

A kind of flexible chalk comprises the chalk body, wherein,

One chalk sleeve is set in an end of described chalk body; Described chalk sleeve is provided with the screw-like projection;

One hollow shell is provided with the screw-like groove in the described hollow shell, described screw-like groove and described screw-like projection are screwed;

One hairbrush is arranged on the end that described hollow shell is not connected with described chalk sleeve.

Aforesaid a kind of flexible chalk, described enclosure material is a rigid plastics.

Aforesaid a kind of flexible chalk, the bristle of described hairbrush is soft plastic or animal hair.

The utility model is owing to adopted above-mentioned technology, the good effect that makes it to have: chalk sleeve is located in the chalk sleeve, realizes Telescopic by the rotation chalk; The hand of making dirty in the time of can avoiding using can make chalk use fully again, thereby has saved resource.

Description of drawings

Fig. 1 is a kind of schematic diagram of flexible chalk.

The specific embodiment

Provide the specific embodiment of a kind of flexible chalk of the utility model below in conjunction with accompanying drawing.

See also shown in Figure 1ly, a kind of flexible chalk comprises chalk body 1, and wherein, a chalk sleeve 2 is set in an end of described chalk body 1; Described chalk sleeve 2 is provided with screw-like projection 21; One hollow shell 3 is provided with screw-like groove 31 in the described hollow shell 3, and described screw-like groove 31 is screwed with described screw-like projection 21 and is connected; One hairbrush 4 is arranged on the end that described hollow shell 3 is not connected with described chalk sleeve 2.

Further, described shell 3 materials are rigid plastics.

In addition, the bristle of described hairbrush 4 is soft plastic or animal hair.

A kind of flexible chalk of the utility model, modern design in using the process of chalk, can avoid hand directly to contact the chalk hand of making dirty, chalk is used reduced unnecessary waste fully; But make simply relatively, be beneficial to the popularization of product and the production of scale.

Present embodiment is not to be used for limiting practical range of the present utility model only for preferred embodiment, and the variation or the modification of all equivalences of doing according to the utility model all should be considered as technology category of the present utility model.

Claims

1. a flexible chalk comprises the chalk body, it is characterized in that:

2. according to the described a kind of flexible chalk of claim 1, it is characterized in that: described enclosure material is a rigid plastics.

3. according to the described a kind of flexible chalk of claim 1, it is characterized in that: the bristle of described hairbrush is soft plastic or animal hair.