CN2375468Y - Dustless chalk - Google Patents

Abstract

The utility model relates to dustless chalk belonging to the technical field of non-propelling pencils; stylus pens; chalk groups of the subclass of writing or drawing apparatuses of the class of office supplies of writing or drawing apparatuses under the subsection of printing in the section of performing operations and transporting according to the International Patent Classification (IPC), and the code mark is B43K19/00. The utility model is composed of the chalk, a chalk cylinder, a filter and a rear cover, and is characterized in that the chalk is provided with the filter. The utility model is the dustless chalk having the advantage of practicability.

Description

A kind of free from dust chalk

The utility model relates to a kind of free from dust chalk.(IPC) belongs to operation Department of Transportation by International Patent Classification (IPC), and printing branch is write or the big class of drawing appliance office appliance, writes or the drawing appliance group non-propelling pencil, stylus, chalk technical group field.Be numbered B43K 19/00.

At present, existing and once had about non-propelling pencil, stylus, the technology of chalk was all done very fruitful effort to numerous people teacher's demand, also once designed many outstanding technical schemes.As nineteen ninety-five Patent Office of the People's Republic of China's social morality declaring of accusing by Zhou Guosheng, Granted publication number is CN2187543Y, China Patent No. (ZL) is: No. 93216753.5 utility model title is the utility model patent of " the soft chalk of band film health ", the technical scheme that is adopted.At non-propelling pencil, stylus, chalk technical elements are routine of great value inventions, and it has solved the problem of chalk health effectively.But still have some deficits, it also is difficult to solve easy to use, cheap, makes the problem of being easy to.

The purpose of this utility model is to provide a kind of free from dust chalk.Easy to use to solve, cheap, make the problem of being easy to.

The purpose of this utility model is achieved in that a kind of free from dust chalk of this utility model.Mainly constitute by chalk, chalk tube, filter, bonnet.Its major part chalk is selected for use by market.The plastic material processing and manufacturing of chalk tube, filter, bonnet.Chalk sleeve is on the chalk tube, and chalk tube and filter with thread connection together can be flexible arbitrarily as the lipstick chalk, and filter also is associated in by screw thread with bonnet, and bonnet can take apart, and filter is the form of a stroke or a combination of strokes, and is very easy to use.So just realized the purpose of this utility model.

The utility model and original non-propelling pencil, stylus, the technology of chalk has been compared two advantages and improvement;

The first, because the utility model has designed form of a stroke or a combination of strokes filter in technical scheme;

The second, because the utility model has designed the chalk sleeve in technical scheme.Thereby just can more effectively solve easy to usely, cheap, make be easy to problem.

Accompanying drawing provides the structural representation of the utility model inside:

The numbering of parts explanation in the schematic diagram:＜1〉chalk＜2〉chalk tube＜3〉filter＜4〉bonnet

Below in conjunction with accompanying drawing, the utility model is described further:

As shown in the figure, a kind of free from dust chalk of the utility model.Mainly by chalk＜1 〉, chalk tube＜2, filter＜3, bonnet＜4 constitute.Its major part chalk is selected for use by market.The plastic material processing and manufacturing of chalk tube, filter, bonnet.Chalk＜1〉be enclosed within chalk tube＜2〉on, chalk tube＜2〉and filter＜3 with thread connection together, can be as lipstick chalk＜1〉flexible arbitrarily, filter＜3〉with bonnet＜4〉also be associated in by screw thread, and bonnet＜4〉can take apart, and filter＜3〉be the form of a stroke or a combination of strokes, very easy to use.So just realized the purpose of this utility model.Thereby just can solve easy to usely, cheap, make be easy to problem.

Below by embodiment, the utility model is done more detailed description:

Embodiment 1, in use, if with chalk＜1〉be enclosed within chalk tube＜2〉on, can use and can also rotate chalk tube＜2, regulate chalk＜1〉length.Thereby just can realize the purpose of this utility model.

Realize that preferred plan of the present utility model is is material with plastics, utilize the basic equipment of plastics factory, take assembling to produce by batch, the demand with supply educational circles so just can realize practical value of the present utility model and economic worth better.

Claims (3)

1. free from dust chalk, it is by chalk＜1 〉, chalk tube＜2, filter＜3, bonnet＜4 constitute, it is characterized in that in chalk＜1〉on be equipped with and chalk tube＜2 filter＜3 that link together.

2. a kind of free from dust chalk according to claim 1 is characterized in that chalk＜1〉with filter＜3 with being threaded.

3. a kind of free from dust chalk according to claim 1 is characterized in that in filter＜3〉bonnet＜4 that connect are arranged with it 〉.

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