JPH0924693A - A shaft of a writing instrument with a cap - Google Patents

Abstract

(57) [Summary] [Purpose] The safety caps are fitted on both ends of the shaft to prevent suffocation due to accidental ingestion by infants, and only certain caps can be fitted on both ends to remove the caps. Try to prevent ink leakage. [Structure] An outer cylinder body (1) of a cap having clips (3) attached to either one of which is fitted to both ends of a shaft,
Inner cylinders (2) and (8) are attached to (7) via ribs (5) and (10) so as to maintain a gap. Part (4),
An air passage communicating from (9) to the fitting openings (12) and (13) is formed, and the outer diameters of the shaft end caps to be fitted are different, and the cap diameters are also the outer diameters of the respective shaft ends. It has the same diameter as the above, and it has the effect of a safety cap.It also fits another cap to a different shaft end to prevent the possibility of accidentally falling off, and uses a fiber core that does not leak ink more easily than a plastic core. Make sure it points down.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing instrument having a safety cap that does not cause an unexpected situation due to accidental swallowing.
Regarding axes such as cosmetics.

[0002]

2. Description of the Related Art Conventionally, a cap is tightly fitted to a writing instrument or a cosmetic shaft to cover a writing body or an applied portion and prevent the tip portion from being damaged or dried. Ingestion may cause suffocation.To prevent this, a ventilation path is established by communicating from the head of the cap to the fitting opening, so that accidental ingestion does not cause suffocation. A cap is known, and it is also used for a writing instrument having an application portion at both ends such as a double-headed pen.

[0003]

However, especially in the case of having a writing body, a coating portion, etc. at both ends, it is often the case that caps of the same shape are used because compatibility is prioritized.
In particular, when the clip is attached to either one of the caps, the ink may leak from the downward pen tip when the clip is attached to the pocket of clothes.

In view of this, the present invention is designed so that the shaft to which the safety cap is mounted can be mounted with the specific cap only at the specific end, and with this improvement, the end which is always desired to be held upward is directed downward. Prevent it from being worn in a pocket.

[0005]

To this end, there are caps fitted at both ends of the shaft, and these caps have an outer cylinder body and an inner cylinder body, respectively, and are provided on the outer cylinder inner wall and the inner cylinder outer wall, respectively. While communicating with a gap from the outer cylinder head to the fitting opening of the outer cylinder, the fitting opening of one of the caps is
Has a diameter that fits around the outer cylinder head outer periphery of the other cap,
The fitting opening portion of the other cap has a diameter different from the diameter of the fitting opening portion of the one cap, and has a diameter to be fitted to the outer circumference of the outer cylinder head of the other cap. The diameters of both ends of the shaft to be fitted are different, and clips are attached to either side of the cap.

[0006]

Since the above-described structure is provided, the caps fitted to both ends of the shaft of a writing instrument or the like have a gap between the inner wall of the outer cylinder and the outer wall of the inner cylinder in carrying out the outer cylinder. By holding an air passage that connects the outer cylinder from the body head to the fitting opening of the cap, it is possible to prevent unexpected situations such as suffocation due to accidental ingestion by an infant, and to prevent the caps on both ends of the shaft. Since the diameters to be fitted are the same as the diameters of the caps having different diameters, only a particular cap can be fitted to a particular end, and if there is variation in the shaft to which the cap is fitted, the same diameter can be used. There is a risk that the diameter of the cap of the diameter will gradually increase and fall out, but there is no possibility of the above-mentioned failure by fitting the cap of the diameter of the specific end.

Further, since the cap with the clip attached to one side is used, the end portion where the cap with the clip is fitted is always directed upward, and the lower end portion is provided with the ink core, that is, the fiber core, which is hard to leak ink. It is attached to prevent the leakage of ink.

[0008]

The present invention will be described in more detail with reference to the embodiments shown in the drawings. In FIG. 1, (1) and (7) are the outer cylinders of the cap, and the inner cylinders (2) and (8) are inside the outer cylinders (1) and (7), respectively. The outer cylinder body (1) is fixed via the ribs (5), (10) protruding from the inner wall of the outer cylinder body (1) with a gap (21) between the outer cylinder body (1), (7). Fitting openings (12) and (13) that open to the outside are formed at the lower ends of the. Ventilation passages communicating from the heads (4) and (9) to the fitting openings (12) and (13) by the outer cylinders (1) and (7) and the inner cylinders (2) and (8). Will be configured. The inner diameter (A) of the fitting opening (12) and the inner diameter (B) of the other fitting opening (13) are different, and therefore,
One fitting opening (12) has the same diameter as one end (17) of the shaft (16) and is fitted therein, and similarly the other fitting opening (13) has a shaft (16). ) The other end (18)
It has the same diameter as the diameter of and is fitted into this.

In this embodiment, a clip (3) is attached to one side of the outer cylinder (1) of the cap, and the outer cylinder (1) of the cap to which the clip (3) is attached is attached. The diameter (A) of the fitting opening (2) of the fitting is the diameter (B) of the fitting opening (13) of the outer cylindrical body (7) of the other cap.
(Here, A is larger than B), and the diameters of the ends of the shafts (16) are the same as the diameters of the caps to be fitted. The writing body (19) formed so as to project from the end of the shaft (16) is a thin core made of plastic, and the other writing body (20) is a thick core obtained from a fiber bundle. The thin core writing material (19) is easier to infiltrate the ink than the thick core writing material (20), and when carrying it at all times, the ink leaks unless the fiber core is oriented downward from the plastic core. There is a risk. In this embodiment, the writing instrument is described as an example, but the writing body can be replaced with the cosmetic application portion as a cosmetic.

Since the present invention is constructed as described above, in use, one cap is removed, and the fitting opening portion (12) of the outer cylinder body (1) is replaced with the outer cylinder body of the other cap. One cursive body (19) fitted on the outer circumference (15) of the head
Can be used for writing, and when the writing body (20) at the other end is used, the other cap is removed and the writing is performed by fitting it on the outer cylinder head outer circumference (14) of the one cap. It can be written on by the body (20). In addition,
Each cap has an air passage that communicates with the inside of the cap from the head of the outer cylinder to the fitting opening.
Even when these are connected, the air passage that communicates from the outer cylinder head of one cap to the fitting opening of the other outer cylinder penetrates, so even if accidentally swallowed, ventilation is possible and unexpected situations It does not occur. In addition, since the cap has the same diameter as the head of the outer cylindrical body of the other cap, there is no possibility that the cap is fitted and closely contacted and separated.

[0011]

As described above, the present invention has an effect as a safety cap, and by attaching a clip to one of the caps, a writing body or the like, which is hard to leak ink, is always placed downward. By setting the diameter of the shaft end to the same diameter as the diameter of the cap without the clip attached, it is possible to selectively attach the cap, and even if the diameter of the cap is not uniform during manufacturing,
By making the diameters of both ends different from the beginning, it has an excellent effect of avoiding the problem of desorption.

[Brief description of drawings]

FIG. 1 is a partial longitudinal front view of an embodiment of the present invention.

FIG. 2 is a vertical cross-sectional view showing a state in which caps on both ends are connected.

FIG. 3 is a top view of the cap.

[Explanation of symbols]

 1,7 Cap outer cylinder 2,8 Cap inner cylinder 3 Clip 4,9 Outer cylinder head 5,10 Rib 6,11 Cap inside 12,13 Fitting opening 14,15 Outer cylinder head Outer circumference 16 Shafts 17 and 18 Shaft ends 19 Writing materials (thick core) 20 Writing materials (fine core) 21 Gap

Claims (1)

[Claims] 1. An inner cylinder having an outer cylinder and an inner cylinder, each of which has a cap fitted to both ends of the shaft, and having a gap between the outer cylinder inner wall and the inner cylinder outer wall. The body is held, and the gap communicates from the outer cylinder head to the fitting opening of the outer cylinder, and the fitting opening of one cap is fitted to the outer circumference of the outer cylinder head of the other cap. Has a diameter different from the diameter of the fitting opening of the other cap, and has a diameter that fits on the outer cylinder head outer periphery of the other cap. A shaft for writing instruments, etc., with different diameters at both ends, and clips attached to either side of the cap.