JP2552906Y2 - Caps for writing instruments - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a cap fitted to the tip of a writing object such as a ball-point pen.

[0002]

2. Description of the Related Art Conventionally, a cap fitted to the tip of a writing body such as a ballpoint pen usually has a rear end closed.

[0003]

In the conventional cap, since the inner hole is closed except for the insertion side, although it is extremely rare depending on the size and shape, an infant swallows the cap accidentally, Accidents such as choking in the throat and choking may occur. It is an object of the present invention to enable a child to accidentally swallow a cap in a hanging situation and to allow air to pass even if the cap is clogged in the throat, thereby avoiding a crisis such as suffocation.

[0004]

SUMMARY OF THE INVENTION A cap such as a writing instrument of the present invention devised to achieve the above object has a hole formed at the rear end of the cap, and a rubber or the like having a ventilation groove formed on an outer surface thereof. A plug made of an elastic body is fitted from the opening at the front end of the cap, the rear end of the plug is positioned in contact with the inner surface of the rear end of the cap, and the cap is inserted into the hole at the rear end from the opening at the front end. In addition to providing a communicating air flow passage, the tip of the writing portion is pushed into contact with the front end of the plug body.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIGS. 1 to 3, a cap 1 having a hole 4 at its rear end has a front end of a writing body 9 fitted into an inner hole 13. FIG. Protrusions 6 are formed at appropriate locations behind the inner hole 13, and grooves 5 are formed near the front end opening.
A clip 2 is integrally provided on the outer surface of the cap 1.

The plug 7 is made of an elastic material such as rubber, and has a ventilation groove 8 formed crosswise on its outer surface. The depth, width, shape, and the like of the ventilation groove 8 are appropriately determined according to the design convenience of the cap and the like so that a necessary air flow passage can be secured.

As described above, the plug 7 is inserted from the opening of the front end of the cap 1, the front end in which the ventilation groove 8 is formed comes into contact with the rear end of the inner hole of the cap 1, and is fixed by the projection 6 so as not to come off. In this state, the tip of the writing instrument 9 is inserted from the front end opening of the cap 1 and the rib 1 formed on the outer periphery of the tip is inserted.
0 is elastically engaged with the groove 5 of the cap, and the writing body 9 is detachably fitted to the cap 1. At this time, the tip of the writing portion 11 is pushed into contact with the front end of the plug 7.

Next, FIGS. 4 and 5 show another embodiment of the present invention, which differs from the previous embodiment in that fan-shaped holes 23 are formed at the rear end 22 of the cap 20 at four places. That is the provision. The holes are provided in an appropriate shape in design.

[0009]

The construction of the present invention is as described above. When the tip of the writing body 9 is fitted to the cap 1 as shown in FIG. 1, the tip of the writing section 11 is pushed into the front end of the plug 7. Because of the contact, the drying of the ball portion 12 is prevented, and there is no running out of ink or blurring of the first brush. When the writing body 9 is detached, the ventilation groove 8 of the plug 7 extends from the opening at the front end to the hole 4 at the rear end.
Air communication is provided by an air flow passage formed between the air passage 13 and the inner hole 13 of the cap 1.

[0010]

[Effects of the Invention] The structure and operation of the present invention are as described above. Even if a child accidentally swallows the cap and clogs his throat, the front end opening of the cap and the hole at the rear end are air. Since it is distributed, a crisis such as suffocation can be avoided. In addition, when a writing body is attached to the cap, the end of the writing part is sealed with the stopper, so that there is no ink shortage and no blur of the first brush. In addition, in order to prevent suffocation, simply opening a hole at the rear end of the cap may cause inconvenience in writing, such as dust adhering to the tip of the writing part, but in the case of the present invention, No problem.

[Brief description of the drawings]

FIG. 1 is a perspective sectional view of a main part of a writing instrument such as a ball-point pen according to an embodiment of the present invention.

FIG. 2 is an exploded perspective view of a main part of the writing instrument according to the embodiment of the present invention.

FIG. 3 is a perspective view showing the appearance of a writing instrument according to an embodiment of the present invention.

FIG. 4 is a perspective sectional view of a main part of a writing instrument according to another embodiment of the present invention.

FIG. 5 is a perspective view showing the appearance of a writing instrument according to another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 cap 2 clip 3 rear end 4 hole 5 groove 6 projection 7 plug 8 ventilation groove 9 writing body 10 rib 11 writing section 12 ball section 13 inner hole 20 cap 21 clip 22 rear end 23 hole 24 groove 25 projection

Claims (1)

(57) [Scope of request for utility model registration] 1. A cap 1 fitted to a tip of a writing body 9 such as a ball-point pen. An elastic body such as rubber having a hole 4 opened at a rear end of the cap 1 and a ventilation groove 8 formed on an outer surface. The cap 7 is fitted from the front end opening of the cap 1, the rear end of the plug 7 is positioned in contact with the inner surface of the rear end of the cap 1, and the cap 1 is inserted into the cap 1 from the front end opening. An air flow passage communicating with the hole 4 is provided, and the writing portion 1 is provided at the front end of the plug 7.
A cap for a writing instrument or the like, characterized in that the tip of the first piece is pressed into contact.