KR200448005Y1

KR200448005Y1 - Chalk Holder

Info

Publication number: KR200448005Y1
Application number: KR2020090007878U
Authority: KR
Inventors: 박기원
Original assignee: (주)금강칠판교구산업
Priority date: 2009-06-18
Filing date: 2009-06-18
Publication date: 2010-03-09

Abstract

The present invention discloses a chalk holder which enables sanitary use so that chalk powder does not get on the hand during writing.

The present invention forms a plurality of cutouts at the inlet of the main body having a diameter larger than the maximum diameter of the chalk to provide a chalk holder that can be used in all the chalk of various thicknesses and to be firmly fixed by a screw tightening method And, the first screw portion and the ring-shaped inclined ring jaw is formed around the cut-out portion, and the second screw portion is formed to have a tightening ring.

Accordingly, the present invention is to provide a convenience of use because it can use a variety of thickness of chalk, it is possible to obtain the effect that the chalk is firmly supported and can be stably written.

Chalk holder

Description

Chalk Holder {Chalk Holder}

The present invention relates to a chalk holder, and more particularly, to a chalk holder that can be used hygienically so that chalk powder formed of lime carbonate or gypsum does not get on the hand during writing.

Conventionally, various kinds of chalk holders have been proposed in which chalk powder does not get on hands and can be used hygienically.

A typical example of this can be seen by Baekmuk Hulder (Korean Utility Model Publication No. 1235 of 1971; hereinafter referred to as 'Quotation Proposal 1').

1 and 2, the top and bottom semi-conical collecting plates 1 and 2 having a wider rear end than the front ends are formed by pins 4, and the top and bottom insertion slots formed by the upper and lower collecting plates 1 and 2, respectively. The inner diameter of the spring is slightly smaller than that of the chalk, and the closing plate (3) is fixed to the rear end of the lower collecting plate (2), and the spring (5) is installed behind the pin (4) to elasticity of the spring (5) The upper collecting plate 1 is to be elastic, and the spring 6 is inserted in front of the pin 4 to push the chalk 7 forward.

Proposition 1 is to press the rear end of the upper gripping plate (1) to insert the chalk into the front end of the chalk insert and push the rear end of the upper gripping plate (1) by pressing the rear end of the upper gripping plate to widen the spring (6) It is used to protrude chalk in front of it due to its elasticity, and it can be used to sanitize regardless of the diameter or size of chalk.

Therefore, this citation proposal 1 is difficult to write stable because chalk 7 is retracted while compressing the spring 6 at the time of writing, and should not be used as long as the length of chalk 7 being bitten by the collecting plates 1 and 2. There is a problem that waste is inevitable.

Another form of chalk kite (Korean Utility Model Publication No. 235, 1967; hereinafter referred to as 'Quotation Plan 2') has been proposed, and the fuselage 1 is shaped like a fountain pen as shown in FIGS. A single layer (2) is formed on the upper inner surface to form a spring (3) chamber, and the cylinder (9) glides on the lowermost end of the trumpet leaf (7) by sliding a circular tube having a larger diameter gradually from the middle portion to the lower portion. The tip portion inside each sliding piece 6, 6 'is provided with a screw-shaped uneven surface 11 and the upper part of the cylindrical portion 9 and the cylinder 9 can enter and exit the inner cylinder. The push rod (8) is attached to the cylinder (9). When the push rod (8) is pressed during use, the spring (8) in the inner cylinder chamber is pressed and the spring of the sliding part is discharged as much as it is released. After inserting the chalk into the part (5), release the push rod (8), The inner diameter (9 ') was compressed by the sliding piece (6, 6'), and the gasket part was inserted into the original position, so that the tip of the sliding piece having a threaded uneven surface (11) did not escape the chalk well. .

Therefore, according to this citation 2, chalk was bitten at the tip of the sliding piece 6, 6 ', so that it could be used more stably than the quotation 1, but in fact the diameter of the inner piece of the sliding piece 6, 6' was about the same. Since only chalk can be used, there is a problem that the kind of chalk that can be used is limited.

In addition, this citation 2 increases the clamping force of chalk compared to the citation 1, but is slightly stronger because the spring is narrowed by the force to raise the sliding pieces 6, 6 '. If pressed, the chalk will be immediately immersed in the holder and can not be used.

The purpose of the present invention is to solve all these problems, and to make it possible to use chalk of various thicknesses such as chalk of large diameter or chalk of small diameter, and the clamping force of chalk is strong and It is to provide a chalk holder to be concentrated around.

The present invention forms a plurality of cutouts at the inlet of the body having a diameter larger than the maximum diameter of chalk to solve this problem,

It proposes a chalk holder having a fastening ring formed by forming a first threaded portion and a ring-shaped inclined rounded jaw around a cut-out portion and forming a second threaded portion coupled thereto.

In this way, since the present invention can use chalk of various thicknesses, it is possible to widen the range of available chalk to provide convenience of use, and chalk can be firmly supported and stably written. In addition, the present invention is a way that the power to tighten the chalk on the tip of the holder is concentrated so that even a short chalk can be used to be able to use it economically because it does not cause the waste of chalk.

This invention is described in detail according to the accompanying drawings as follows.

5 and 6 illustrate the exterior and its structure of the chalk holder according to the present invention in a perspective view and a separated perspective view, and an internal structure of the chalk holder in FIG. 7.

As can be seen from this, the subject innovation is the main body 100 is provided with a receiving space 101 having a diameter larger than the maximum diameter of chalk, and the top of the main body 100 to facilitate the entry and movement of chalk A plurality of cutouts 200 formed at the inlet of the through-hole 102 formed at the inlet, the main body 100 formed at the inlet side of the receiving space 101,

The tubular tightening ring 300 is formed by forming a first screw portion 201 and a ring-shaped inclined annular projection 202 formed around the cutout portion 200, and forming a second screw portion 301 coupled thereto. Suggested chalk holder.

According to the present invention, the tubular tubing ring 300 is rotated by inserting the tubular tubing ring 300 having a uniform diameter to the inlet of the main body 100 so that the tubular tightening ring 300 rises upward in FIG. 7A. 7) the cutout part 200 of the inlet is opened, and as shown in FIG. 7B, the chalk is put into the cutout part 200 to be accommodated in the accommodation space 101, and the tip of the chalk is properly exposed downward. Next, as shown in Figure 7c by rotating the tubular tightening ring 300 in the reverse direction before and after the tubular tightening ring 300 is lowered, the tubular tightening ring 300 by pressing the inclined round jaw 202 to give a cut ( 200) The inner circumferential surface is to tighten the chalk, and to tighten the tubular tightening ring (300) more to ensure that the cut-off portion 200 is in close contact with the appropriate chalk.

In this state, a considerable impact is applied to the chalk in the process of the user writing on the blackboard, but the first and second screw parts 201 and 301 are fastened to the tubular tightening ring 300 which is not retracted by being engaged with the main body 100. By the tightening force, the chalk is firmly fixed to the inner circumferential surface of the cutoff portion 200, so that chalk cannot be stably retracted.

In addition, the subject innovation is to allow the chalk to move into the receiving space 101 by expanding the cutout portion 200 by rotating the tubular tightening ring 300 as shown in Figure 7d for storage after use. Cover the cover 400 to the cutting unit 200 is to be carried or stored.

The inner diameter of the cover 400 coupled to the cutout 200 is such that the cutout 200 has a minimum contracted outer diameter, and when the cover 400 is covered, the cutout 200 is retracted. The chalk put in the receiving space 101 of the 100 can be prevented from leaking.

In addition, the present invention can use chalk of various thicknesses.

That is, the present invention is to rotate the tubular tightening ring 300, as shown in Figure 8a to raise the lower part of the cutout 200 is extended, the cutout 200 at this time is the inner diameter of the thickest chalk It's a bit wider, so you can put a piece of chalk with a large diameter and let it be exposed to the bottom by the right length.

After inserting the coarse-grained chalk in this manner, as shown in FIG. 8B, the second screw part 301 of the tubular tightening ring 300 is rotated in the opposite direction while being fitted to the first screw part 201 of the main body 100 and lowered. When the tubular tightening ring 300 starts tightening the inclined ring chin 202 of the cutoff portion 200 and the inner circumferential surface of the cutoff portion 200 tightens the chalk, and the chalk is a tubular tightening because its diameter is thick. By tightening the ring 300 to be lowered slightly downward, the inner part of the cutout portion 200 is in close contact with the circumferential surface of the chalk to be used stably.

In addition, the present invention can be conveniently used even in the case of a thin diameter chalk as shown in FIG.

That is, the present invention is to rotate the tubular tightening ring 300, as shown in Figure 9a to raise the lower part of the cutout 200 is extended, the cutout 200 at this time than the inner diameter of the thick chalk Being so wide that it is easy to put chalk in the receiving space 101 and at the same time to be exposed to a suitable length.

After inserting the thin chalk in this way, as shown in FIG. 9B, the tubular tightening ring 300 is rotated in the opposite direction and lowered in the bite state of the first and second screw parts 201 and 301.

In the case of such thin chalk, the second screw part 301 of the tubular tightening ring 300 is rotated more by rotating the tubular tightening ring 300 more than in the case of the thick chalk, which is described above. By completely pressing the inclined round jaw 202 via 201, although the diameter of chalk is thin, the cut portion 200 is contracted to have a minimum diameter, so that the cut portion 200 closely adheres to the chalk and stably. It will be available. In this way, the inner diameter of the cutout portion 200 is adjusted according to the degree that the tubular tightening ring 300 tightens the inclined round jaw 202, so that chalk of various thicknesses can be firmly fixed and can be conveniently written. .

Thus, in the present invention, it is possible to firmly fix the chalk of various thicknesses to the inlet tip of the main body 100, so that the chalk can be used with a diameter in accordance with the user's taste, even if a strong force is applied during the writing. It is possible to stably write without being pushed out.

In addition, in the present invention, when the chalk enters or moves to the accommodation space 101 of the main body 100 by forming the through hole 102 at the top of the main body 100, the air in the main body 100 receiving space 101 is smooth. It was discharged or introduced to make the free movement of chalk.

In addition, in the present invention, if necessary, the clip 500 may be formed on one side of the main body 100 to facilitate portability, and the clip 500 may not hinder the lifting operation of the tubular tightening ring 300. Of course it must be installed in a location.

1 and 2 is an exploded perspective view and a longitudinal cross-sectional view showing a conventional chalk holder structure.

3 and 4 is an exploded perspective view and an operational state longitudinal cross-sectional view showing a conventional chalk clip.

Figure 5 is a perspective view showing the appearance of the chalk holder according to the present invention.

Figure 6 is an exploded perspective view showing the structure of the chalk holder according to the present invention.

Figure 7 is a longitudinal cross-sectional view showing a state of use of the chalk holder according to the present invention.

8 is an explanatory diagram showing an example of using a thick chalk in the present invention.

Figure 9 is an explanatory view showing an example of using a thin chalk in the present invention.

* Explanation of symbols for the main parts of the drawings

100: body 101: accommodation space 102: through

200: cutting part 201: first screw part 202: inclined round jaw

300: tubular tightening ring 301: second screw portion 400: cover

Claims

A main body provided with an accommodating space having a diameter larger than the maximum diameter of chalk, a plurality of cutouts formed at an inlet of the main body formed on the inlet side of the accommodating space,

An inclined round jaw of the first screw portion and the ring formed around the cutout portion,

Chalk holder characterized in that it comprises a tubular tightening ring formed by forming a second screw portion for tightening the inclined round jaw through the first screw portion described above.

The method according to claim 1,

Chalk holder characterized in that to form a through-hole on the upper end of the main body in order to facilitate the entry and movement of chalk.

The method according to claim 1,

Chalk holder, characterized in that the cover is put on the lower part of the above-mentioned cut section to be portable.

The method according to claim 3,

Chalk holder, characterized in that the inner diameter of the above-described cover is equal to the outer diameter of the minimum retracted portion.