JPH0755117Y2 - Writing instrument cap - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing instrument cap which is safe even if it is accidentally clogged in the throat.

[0002]

2. Description of the Related Art Caps for writing instruments that use ink are separated from the writing instrument body when writing, but the size is almost the same as a "pacifier" for infants. Can be put in your mouth. If you accidentally swallow it and get stuck in your throat, the writing instrument cap, which has the function of keeping the pen body airtight and preventing the evaporation of ink, has a cylindrical shape with a bottom and is not breathable. There is a risk of suffocation and death.

For this reason, there is a demand for a writing instrument cap that is safe even if it accidentally gets stuck in the throat. However, a writing instrument cap having a function of keeping a pen body airtight is provided with a large air permeability with a simple structure. It is very difficult to do.
In order to achieve such an object, for example, it is known to form an air vent groove from the tail end to the tip on the side surface of the cap. (Japanese Utility Model Publication No. 1-169386) However,
The portion of the cap that fits in the barrel of the writing instrument body generally has a large diameter because its inner diameter must correspond to the outer diameter of the barrel of the writing instrument body. Therefore, in order to provide the ventilation groove on the outside of the portion fitted to the shaft cylinder, it is necessary to increase the wall thickness, which causes a problem that the outer diameter of the cap increases.

[0004]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a writing instrument cap which has a simple structure, does not have a large outer diameter, and is safe even if it accidentally gets stuck in the throat.

[0005]

In order to achieve such an object, the writing instrument cap of the present invention comprises a large-diameter cylindrical portion fitted to the axial cylinder of the writing instrument main body and a tip of the large-diameter cylindrical portion at its tail end. Consists of a small-diameter cylinder with a bottom that attaches a clip that extends to the vicinity and covers the pen of the writing instrument body, and a plurality of flanges that are connected to the outer circumference of the small-diameter cylinder with a bottom and have ventilation grooves formed on the outer edge. Then, a narrow ball portion facing the large-diameter cylinder portion is formed at the tip of the clip.

That is, ventilation grooves are formed on the outer edges of a plurality of flanges continuously provided on the outer periphery of the small-diameter bottomed cylindrical portion, and the large-diameter cylindrical portion is formed at the tip of the clip extending near the tip of the large-diameter cylindrical portion. Since the ball with a narrow width facing each other is formed, even if the throat is accidentally clogged, the throat will be ventilated between the back of the clip and the surface of the large-diameter cylinder, the gap between the collar and the collar, and the collar. Does not adhere to the groove. In other words, an air passage that does not allow the throat to come into close contact is formed from the tail end to the tip of the cap, so that breathing can be performed through this air passage. Therefore, a safe writing instrument cap having an extremely simple structure and having airtightness and breathability can be obtained. Further, since the ventilation groove is not provided on the outer circumference of the large-diameter cylindrical portion, it is not necessary to increase the wall thickness of the large-diameter cylindrical portion, and the outer diameter of the cap does not increase.

Further, a bottomed cylindrical lid body consisting of a large inner diameter portion which fits into the shaft cylinder of the writing instrument body and a small inner diameter portion which covers the pen body of the writing instrument body, and extends from the tail end portion to the vicinity of the tip end of the lid body. ,
The tip is provided with a clip having a narrow ball portion facing the outer peripheral surface of the large inner diameter portion, and an annular groove is formed on the outer peripheral surface of the small inner diameter portion. The same purpose can be achieved by a writing instrument cap characterized in that a ventilation groove is formed in the longitudinal direction extending toward the tail end.

In other words, if you accidentally get stuck in your throat,
The throat does not adhere to the annular groove and the ventilation groove between the back of the clip and the surface of the large inner diameter, and there is a ventilation path that does not adhere to this throat from the tail end to the tip of the cap, so breath through this ventilation path be able to.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the drawings. FIG. 1 shows a first embodiment. Large diameter tube 2
Is a portion that fits into a barrel of a writing instrument body (not shown) such as a marker or felt-tip pen, and its inner diameter corresponds to the outer diameter of the barrel fitting portion. The small-diameter bottomed tubular portion 1 integrated with the large-diameter tubular portion 2 is a portion that covers the pen body of the writing instrument main body, and the inner diameter of the small-diameter bottomed tubular portion 1 is smaller than the inner diameter of the large-diameter tubular portion 2. The clip 3 is integrally fixed to the tail end portion 1a of the small-diameter bottomed tubular portion 1, and its tip extends to the vicinity of the tip of the large-diameter tubular portion 2. Then, a ball portion 31 is attached to the tip of the clip 3 to face the outer peripheral surface of the large-diameter cylindrical portion 2,
As shown in, the width of the ball portion 31 is much smaller than the width of the clip 3. Therefore, even if the ball portion 31 contacts the outer peripheral surface of the large-diameter cylindrical portion 2, a large gap exists between the clip 3 and the outer peripheral surface of the large-diameter cylindrical portion 2.

A large number of collars 4 are provided on the outer circumference of the small diameter bottomed cylinder 1.
Are integrally formed. The outer diameter of the collar portion 4 is equal to the outer diameter of the large-diameter tubular portion 2, and in appearance, a plurality of annular grooves are formed on the surface excluding the lower portion of the tubular body.
As shown in FIG. 4, two ventilation grooves 5 are formed on the outer edge of the collar portion 4 so as to face each other. That is, the ventilation grooves 5 of each collar 4 are connected to form one ventilation passage. As described above, since the ventilation groove 5 is formed only in the collar portion 4 and not in the large diameter cylindrical portion 2, it is not necessary to increase the wall thickness of the large diameter cylindrical portion 2 and the overall outer diameter is increased. There is no word.

Even if the cap having such a structure is accidentally clogged in the throat, a large gap exists between the clip 3 and the outer peripheral surface of the large-diameter cylindrical portion 2, so that this gap and each collar portion 4 are separated from each other. The space and the ventilation groove 5 form a ventilation path. Therefore, it is possible to breathe through this ventilation path and avoid the worst situation.

Next, FIG. 6 shows a second embodiment. The bottomed tubular lid 6 has a large inner diameter portion 62 that fits into the shaft tube of the writing instrument main body.
And a small inner diameter portion 61 that covers the pen body of the writing instrument main body. In other words, the large inner diameter 62 has a small wall thickness, but the small inner diameter 61
Is thicker. The clip 3 is integrally fixed to the tail end portion 6a of the lid body 6, and its tip extends to the vicinity of the tip of the lid body 6. And at the tip of the clip 3, the ball 3
1 is attached and faces the outer peripheral surface of the large inner diameter portion 62, but the width of the ball portion 31 is the same as that of the first embodiment.
It is much smaller than the width. Also, the small inner diameter part
One annular groove 7 is formed on the outer peripheral surface of 61, and from the annular groove 7 to the tail end portion 6a of the lid body 6, as shown in FIG.
The ventilation grooves 8 of the book are formed so as to face each other. That is, the difference in appearance between the first embodiment and the second embodiment is that the first embodiment has a plurality of annular grooves, whereas the second embodiment has one annular groove. Is only formed. In addition,
The annular groove 7 does not have to be a complete annular shape, but the clip 3
It may be an incomplete ring from below to the ventilation groove 8.

Also in this embodiment, since the ventilation groove 5 is formed only in the small inner diameter portion 61 and not in the large inner diameter portion 62, it is not necessary to increase the thickness of the large inner diameter portion 62.
The overall outer diameter does not increase. Even if the throat is accidentally clogged, a large gap between the clip 3 and the outer peripheral surface of the large inner diameter portion 62, the circular groove 7 and the ventilation groove 8 form a ventilation path, and breath through the ventilation path. You can

[0014]

As described above, the writing instrument cap of the present invention does not have a ventilation groove formed in a portion of the writing instrument body that fits into the shaft tube, and has a vertical direction in a portion of the writing instrument body that covers the pen body. The ventilation groove and the circular ring groove in the circumferential direction are formed, and a large gap is formed between the tip of the clip and the outer surface of the portion of the writing instrument main body that fits into the shaft cylinder so as to be continuous with the circular groove. It is simple and does not have a large outer diameter, and can be a writing instrument cap that is safe even if it accidentally gets stuck in the throat.

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view of a first embodiment.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB in FIG.

4 is a cross-sectional view taken along the line CC of FIG.

5 is a cross-sectional view taken along the line DD of FIG.

FIG. 6 is a partial cross-sectional view of the second embodiment.

7 is a cross-sectional view taken along the line EE of FIG.

8 is a cross-sectional view taken along the line FF of FIG.

[Explanation of symbols]

 1 Small-diameter bottomed tubular part 2 Large-diameter tubular part 3 Clip 31 Ball part 4 Collar part 5 Ventilation groove 6 Lid 61 Small inner diameter part 62 Large inner diameter part 7 Annular groove 8 Ventilation groove

Claims (2)

[Scope of utility model registration request] 1. A small-diameter bottomed cylinder that covers a pen body of a writing instrument main body, in which a large-diameter tubular portion that fits into a shaft cylinder of the writing instrument main body and a clip that extends to the vicinity of the tip of the large-diameter tubular portion are attached to its tail end. And a plurality of flanges that are connected to the outer circumference of the small-diameter bottomed cylindrical part and have ventilation grooves formed on the outer edge, and a narrow ball part facing the large-diameter cylindrical part at the tip of the clip. A writing instrument cap characterized by having formed therein. 2. A bottomed cylindrical lid body having a large inner diameter portion that fits into the shaft cylinder of the writing instrument body and a small inner diameter portion that covers the pen body of the writing instrument body, and extends from the tail end portion to the vicinity of the tip end of the lid body. A clip having a narrow ball portion facing the outer peripheral surface of the large inner diameter portion is formed at the tip, an annular groove is formed on the outer peripheral surface of the small inner diameter portion, and the lid body is formed from the annular groove. A writing instrument cap characterized in that a vertical ventilation groove is formed from the tail end of the.