CN102310690A

CN102310690A - Manufacture method for chalk with telescopic holding handle

Info

Publication number: CN102310690A
Application number: CN2010102152161A
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: 2012-01-11

Abstract

The invention relates to a manufacture method for a chalk with a telescopic holding handle, which comprises the following steps of: step (1): sheathing a chalk sleeve with the threaded outer surface onto one end of the chalk; step (2): screwing a hollow case with screw threads at the inner side with the chalk sleeve; and step (3) installing a hair brush at the end part of the hollow case which is not connected with the chalk sleeve. The manufacture method for the chalk with the telescopic holding handle has the advantages that the design is novel, in the chalk using process, a hand is prevented from getting dirty through being in direct contact with the chalk, the unnecessary waste is completely reduced during the process of the chalk in use, a blackboard is also convenient to wope, the manufacture is relatively simple, and the population and the mass production of products are favorably realized.

Description

A kind of preparation method with chalk of scalable lever

Technical field

The present invention relates to a kind of preparation method of chalk, relate in particular to a kind of preparation method with chalk of scalable lever.

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 on pattern and function, all emerges in an endless stream.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, and wiping is got up very inconvenient.

Summary of the invention

A kind of preparation method with chalk of scalable lever of the present invention provides a kind of chalk that carries chalkboard eraser and flexible lever function, both can make things convenient for wiping, can avoid the hand of making dirty again, and chalk can use fully.

For realizing above-mentioned purpose, the technical scheme that the present invention takes is:

A kind of preparation method with chalk of scalable lever, wherein,

Step 1: with one have the shape of threads outer surface chalk sleeve be set in an end of said chalk;

Step 2: the hollow shell and the said chalk sleeve that an inboard are had screw thread are screwed;

Step 3: the end that is not connected with said chalk sleeve at hollow shell is provided with a hairbrush.

Aforesaid a kind of preparation method with chalk of scalable lever, said enclosure material is a hard plastic.

Aforesaid a kind of preparation method with chalk of scalable lever, the bristle of said hairbrush is soft plastic or animal hair.

The present invention is owing to adopted above-mentioned technology, the good effect that makes it to have: through at shell one end one hairbrush being set, and chalk sleeve is located in the chalk sleeve, realizes Telescopic through the rotation chalk; Can make things convenient for wiping, the hand of making dirty in the time of can avoiding the use of again also makes chalk use fully, thereby has practiced thrift resource.

Description of drawings

Fig. 1 is a kind of sketch map with chalk of scalable lever.

The specific embodiment

Provide the specific embodiment of the preparation method of a kind of chalk with scalable lever of the present invention below in conjunction with accompanying drawing.

See also shown in Figure 1, a kind of preparation method with chalk of scalable lever, wherein,

Earlier with one have the shape of threads outer surface chalk sleeve 2 be set in an end of a chalk 1; The hollow shell 3 that has a screw thread with an inboard again is screwed with said chalk sleeve 2, when using said chalk 1 to feel long or too short, can regulate length through rotating said chalk 1; At last in the end that is not connected with said chalk sleeve of said hollow shell 3 hairbrush 4 is set, the said hollow shell 3 available hairbrush that overturn when writing wrongly written character carry out wiping.

Further, said shell 3 materials are hard plastic.

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

A kind of preparation method of the present invention with chalk of scalable lever, 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, can also make things convenient for blackboard wiping; But make simply relatively, be beneficial to the popularization of product and the production of scale.

This embodiment is merely preferred embodiment, is not to be used for limiting practical range of the present invention, and all variation or modification according to the equivalence that the present invention did all should be regarded as technological category of the present invention.

Claims

1. the preparation method with chalk of scalable lever is characterized in that,

Step (1): with one have the shape of threads outer surface chalk sleeve be set in an end of said chalk;

Step (2): the hollow shell and the said chalk sleeve that an inboard are had screw thread are screwed;

Step (3): the end that is not connected with said chalk sleeve at hollow shell is provided with a hairbrush.

2. according to the said a kind of preparation method of claim 1, it is characterized in that said enclosure material is a hard plastic with chalk of scalable lever.

3. according to the said a kind of preparation method of claim 1, it is characterized in that the bristle of said hairbrush is soft plastic or animal hair with chalk of scalable lever.