JPH0948195A - Cap for writing instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a safety cap for a writing instrument even if an infant erroneously swallows it in the cap that the end of a clip is extended from the edge of a cap body being short. SOLUTION: A clip 2 for a writing instrument is integrally fanned with a cylindrical cap body 1 with a bottom via a mounting protrusion 3 formed on the outer periphery of the vicinity of the tail end of the body 1, and the end of the clip is extended from the edge of the body. The lateral width of the protrusion is formed smaller than that of the clip to form the sectional shape substantially in a T shape, and the pressure contact ball 4 of the clip is so formed as to be disposed at the opposed position near the edge of the body.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a writing instrument cap that is safe even if an infant accidentally swallows it.

[0002]

2. Description of the Related Art A cap for a writing instrument is separated from the body of the writing instrument when writing, but since the size of the cap is almost the same as a "pacifier" for an infant, an infant may put it in his mouth. . If accidentally swallowed and gets stuck in the throat, there is a risk of not being able to breathe because the cap has a cylindrical shape with a bottom and no ventilation hole is formed, leading to suffocation.

For this reason, various safety caps have been proposed and put into practical use that allow breathing even if they get stuck in the throat. However, in a cap to which a clip is attached, a gap between the clip and the cap body is provided. It has been known that the cap can be ventilated from the tip end to the tail end to allow breathing even if accidentally swallowed.

By the way, although the length of the cap body is variously designed, the cap having the inner cylinder for sealing the pen body inside the cap body has a long overall length, and the cap body seals the pen body. Tend to be designed short. On the other hand, the clip attached to the cap body is designed to have substantially the same length of about 4 to 5 cm because of the function of pinching the cloth piece when it is inserted into the pocket and the external appearance when it is inserted into the pocket. Therefore,
If the cap body is shorter than this, the tip of the clip extends beyond the tip edge of the cap body.

On the other hand, the pressure contact ball is formed near the tip of the clip. In other words, in the cap where the tip of the clip extends beyond the tip edge of the cap body, the pressure contact ball is located outside the cap body, and when the cap that is attached to the writing instrument body is attached, the pressure contact ball is the axis of the writing instrument body. It is designed to face the outer peripheral surface of the cylinder. Then, when the cloth piece is inserted into the pocket, the cloth piece is pinched by the press contact ball and the shaft cylinder of the writing instrument main body.

[0006]

As described above, in a cap in which the cap body is short and the tip of the clip extends beyond the tip edge of the cap body, the gap between the clip and the cap body is used to Even if the cap can be ventilated from the tip to the tail end, if the throat is accidentally clogged, the pressure contact ball is located outside the cap body, so the tip of the clip deforms and contacts the cap body side. However, there is a risk that the gap between the clip and the cap body will disappear on the tip side, resulting in suffocation.

It is therefore an object of the present invention to provide a writing instrument cap that is safe even if an infant accidentally swallows it in a cap having a short cap body and a tip of the clip extending beyond the tip edge of the cap body. .

[0008]

In order to achieve such an object, the present invention provides a clip integrally formed with a mounting projection formed on the outer peripheral surface of the bottomed cylindrical cap body near the tail end. In the writing instrument cap in which the tip of the clip extends beyond the tip edge of the cap body, the lateral width of the mounting projection is made smaller than the lateral width of the clip, and the cross-sectional shape is approximately T.
The pressure contact ball of the clip is formed in a position facing the tip end edge of the cap body.

[0009]

That is, since the lateral width of the mounting projection formed on the outer peripheral surface near the tail end of the cap body is made smaller than the lateral width of the clip to make the cross-sectional shape substantially T-shaped, the gap between the clip and the cap body is small. Although it is possible to ventilate from the tip of the cap to the tail end, since the pressure contact ball is formed at a position facing not near the tip of the clip but near the tip edge of the cap body, even if it gets stuck in the throat, Since the press contact ball comes into contact with the cap body, the clip does not come into contact with the cap body, so that air permeability can be secured.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the embodiments shown in the drawings. In FIG. 1, the cap body 1 is
A tangible tubular body molded from synthetic resin, with a total length of 3 cm
Has become a short length. An annular protrusion 14 that engages with the writing instrument body is formed on the inner peripheral surface of the cap body 1, and the annular protrusion 14 presses against the outer peripheral surface of the writing instrument body (not shown) to seal the pen body. A mounting protrusion 3 is formed near the tail end side of the cap body 1, and a clip 2 is integrally connected to the mounting protrusion 3. The total length of clip 2 is 4.5
cm, and the tip 2a of the clip 2 extends beyond the tip edge 1a of the cap body 1.

Here, as shown in FIG. 4, the mounting projection 3
The width of is smaller than the width of the clip 2
The clip 2 has a substantially T-shaped cross section. Therefore, the substantially U-shaped portion formed by the cap main body 1, the clip 2, and the mounting projection 3 is an air passage communicating with the gap between the cap main body 1 and the clip 2. Also, the cap body 1
The small diameter portion 11 is formed on the tail end side of the clip 2 and outside the tail end of the clip 2. As shown in FIG. 2, a plurality of vertical ribs 12 are formed on the outer peripheral surface of the small diameter portion 11. ing.

Further, as shown in FIG. 3, a plurality of short vertical ribs 13 following the vertical ribs 12 are provided at the tail end of the cap body 1.
Are formed, and between the vertical ribs 12 and between the vertical ribs 13, the cap body 1, the clip 2, and the mounting protrusion 3 are formed.
It is an air passage connected to the air passage formed by. The pressure contact ball 4 that presses the cloth piece when inserted into the pocket is formed not at the tip 2a of the clip 2 but at the position facing the tip edge 1a of the cap body 1.

If the cap for a writing instrument having such a structure is accidentally packed in the throat, the tip portion of the clip 2 tends to deform toward the outer peripheral surface of the cap body 1, but the pressure contact ball 4
However, since it is formed not at the tip 2a of the clip 2 but at the position facing the tip edge 1a of the cap body 1, the tip of the clip 2 does not contact the outer peripheral surface of the cap body 1, A gap between the cap body 1 and the cap body 1 is secured. Since this gap communicates with the ventilation path formed by the cap body 1, the clip 2, and the mounting projection 3 and the ventilation path between the vertical ribs 12 and between the vertical ribs 13, that is, the tip of the cap. Since the air passage is secured from the to the tail end, it becomes possible to breathe.

Further, since the press contact ball 4 for pressing the cloth when inserted in the pocket is formed not at the tip 2a of the clip 2 but at the position facing the tip edge 1a of the cap body 1, the cap is attached. Since there is a relatively large gap between the writing instrument body and the tip of the clip, there is an advantage that it can be easily inserted into the pocket.

[0015]

As described above, in the writing instrument cap of the present invention, the lateral width of the mounting projection formed on the outer peripheral surface near the tail end of the cap body is made smaller than the lateral width of the clip so that the cross-sectional shape is substantially the same. In addition to being T-shaped, the pressure contact ball that presses the cloth when inserted in the pocket is formed not at the tip end of the clip but at the tip end edge of the cap body, so even if it gets stuck in the throat, Since the press contact ball comes into contact with the cap body, the clip does not come into contact with the cap body, so that air permeability can be secured.

[Brief description of drawings]

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

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.

[Explanation of symbols]

 1 Cap Main Body 11 Small Diameter Part of Cap Main Body 12 Vertical Rib 13 Vertical Rib 1a Tip Edge of Cap Body 2 Clip 2a Tip of Clip 3 Mounting Protrusion 4 Pressing Ball

Claims (1)

[Claims] 1. A clip is integrally formed through a mounting protrusion formed on an outer peripheral surface near a tail end of a bottomed cylindrical cap body, and a tip of the clip extends beyond a tip edge of the cap body. In the writing instrument cap, the lateral width of the mounting protrusion is smaller than the lateral width of the clip, the cross-sectional shape is substantially T-shaped, and the pressure contact ball of the clip is formed at a position facing near the tip edge of the cap body. Characteristic writing instrument cap.