JPH0629886U - Caps for writing instruments - Google Patents

Abstract

(57) [Summary] [Purpose] To provide a cap for a writing instrument or the like that can prevent suffocation due to accidental ingestion and that can sufficiently keep airtightness. [Structure] A collar portion 4 is provided in front of or behind the airtight holding portion 3. A first groove 5 is axially provided in the collar portion 4. Then, a second groove 6 is provided on the outer surface of the cap body 2 excluding the airtight holding portion 3.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cap such as a writing instrument. More specifically, the present invention relates to a cap for a writing implement or the like for preventing choking due to accidental swallowing by an infant, etc., and relates to a cap structure for a writing implement, an applicator, a makeup implement, etc. that satisfies the above-mentioned choking prevention function without impairing the original airtightness. .

[0002]

[Prior art]

 Conventionally, in this type of cap, for example, a configuration in which an air passage continuous in the axial direction is provided on the outer surface of the cap body is disclosed in JP-A-3-187796.

[0003]

[Problems to be solved by the device]

 However, since the conventional cap has a smooth shape without any unevenness in the axial direction, if an infant or the like accidentally swallows it, there is a risk that it may enter deep inside the trachea.

Further, since the conventional cap is integrally injection-molded with a plastic material, if there is a non-uniform wall thickness portion on the outer circumference of the airtight holding portion, a so-called sink mark is generated on the inner airtight holding portion. However, the desired accuracy of the airtightness maintaining function was not obtained.

The present invention is to solve the above-mentioned conventional problems, and even if an infant accidentally swallows it, it is possible to ventilate, and it is possible to prevent the child from entering the deep inside of the trachea. Furthermore, the present invention relates to a writing instrument body and a cap for a writing instrument having a sufficient airtight function when attached.

[0006]

[Means for Solving the Problems]

 The present invention is a cap 1 such as a writing instrument for preventing suffocation caused by accidental ingestion by providing a groove that serves as an air passage in the axial direction on the outer surface of the cap, and an airtight holding portion 3 for the writing tip is provided on the inner surface of the cap. A flange portion 4 is provided on the outer surface of the airtight holding portion 3 at the front or rear position, and an axial first groove 5 is formed on the outer surface of the flange portion 4 so as to penetrate the airtight holding portion 3. It is required that an axial second groove 6 that is opened at the front end or the rear end of the cap body 2 is provided on the outer surface of the cap excluding the outer surface of the position.

At least one first groove 5 and at least one second groove 6 may be provided, and a plurality of them are usually prepared in consideration of a sufficient air flow rate. The first groove 5 of the collar portion 4 is formed through the collar portion 4 so as to open on both sides of the front end and the rear end of the collar portion 4. The second groove 6 opens at the tip of the main body 2 when it is provided in front of the airtight holding portion 3 and opens at the rear end of the main body 2 when it is provided behind the airtight holding portion 3.

The collar portion 4 is provided on either the front side or the rear side of the airtight holding portion 3 of the main body 2. Further, a plurality of ribs may be vertically provided on the outer peripheral surface to form the collar portion 4, and at the same time, the first groove 5 may be formed between the ribs. Further, the outer surface of the airtight holding portion 3 of the main body 2 is a smooth surface without the collar portion 4 or the second groove 6 being formed.

[0009]

[Action]

 Since the collar 4 is provided on the outer surface of the cap body 2, frictional resistance with the inner wall of the trachea is created, and even if an infant accidentally swallows the cap 1, it does not enter the inner part of the trachea, so it is easy. Can be exhaled. Moreover, since the space portion is formed between the inner wall of the trachea and the outer surface of the airtight holding portion 3 by the collar portion 4, the air passages of the first groove 5 and the second groove 6 communicate with each other in the space portion. , Don't suffocate.

When the first groove 5 and the second groove 6 are formed on the outer surface of the airtight holding portion 3 excluding the airtight holding portion 3 at the front and rear positions, and are integrally formed of a plastic material. However, since no sink mark is generated in the airtight holding portion 3, the original function of preventing vaporization of ink in the cap is satisfied.

[0011]

【Example】

Embodiments of the present invention will be described with reference to the drawings.

1 and 2 show a first embodiment of the present invention. On the inner surface of the cap body 2, an airtight holding portion 3 made of an annular protrusion is formed. A collar portion 4 is formed on the outer surface of the main body 2 behind the airtight holding portion 3, and a plurality of first grooves 5 are provided on the outer periphery of the collar portion 4 in the axial direction. Each of the first grooves 5 extends axially from the front end to the rear end of the collar portion 4. On the other hand, a plurality of second grooves 6 opening at the tip of the main body 2 are formed on the outer surface of the main body 2 in front of the airtight holding portion 3.

Since the collar portion 4 or the second groove 6 is not formed on the outer surface of the main body 2 in the vicinity of the airtight holding portion 3, even if integrally formed by injection molding of a plastic material, an uneven thickness portion is formed. There is no occurrence of sink marks in the airtight holding portion 3.

FIG. 3 shows a second embodiment. The main body 2 is composed of a large diameter portion and a small diameter portion, and an annular protrusion is provided on the inner surface of the front portion of the large diameter portion to form the airtight holding portion 3. The outer periphery of the airtight holding portion 3 is a smooth surface.

A flange portion 4 is provided behind the airtight holding portion 3, and the flange portion 4 is provided with a plurality of first grooves 5 extending longitudinally from the front end to the rear end thereof. Since the bottom surface of the first groove 5 is flush with the outer periphery of the airtight holding portion 3, the flange portion 4 has a shape like a plurality of ribs provided vertically.

A second groove 6 is provided on an extension of the first groove 5 on the outer surface of the main body 2 in the vicinity of the airtight holding portion 3 and the small diameter portion in front of the airtight holding portion 3.

4 and 5 show a third embodiment. A circumferential smooth surface is formed on the inner surface of the main body 2 to form the airtight holding portion 3. A collar portion 4 is formed on the outer surface of the main body 2 behind the airtight holding portion 3, and a plurality of first grooves 5 are axially formed in the collar portion 4. The first groove 5 is opened radially inward at a position from the rear end of the main body 2 to the vicinity of the airtight holding portion 3.

In front of the airtight holding portion 3, a plurality of second grooves 6 are vertically provided so as to open at the tip of the main body 2. Here, since the tip of the side wall of the main body 2 projects forward from the top surface of the main body 2, the second groove 6 is configured to open radially inward at the front end of the main body 2.

Since the first groove 5 and the second groove 6 also open inward in the radial direction, the openings of the first and second grooves 6 at the front end of the main body 2 or the rear end of the main body 2. However, even if it is blocked by the inner wall of the trachea, a ventilation path is secured.

FIG. 6 shows a fourth embodiment. Similar to the first embodiment, the airtight holding portion 3 made of an annular protrusion is formed on the inner surface of the main body 2. The difference from the first embodiment is that the positions of the first groove 5 and the second groove 6 are opposite to the position of the airtight holding portion 3, and the airtight holding portion 3 of the outer surface of the main body 2 is A flange 4 is formed on the front side, and a plurality of first grooves 5 are provided on the outer circumference of the flange 4 in the axial direction. On the other hand, on the outer surface of the main body 2 behind the airtight holding unit 3, the rear end of the main body 2 A plurality of second grooves 6 that are open are formed.

[0022]

[Effect of device]

 Since the cap of the present invention has the above-mentioned configuration, when an infant swallows it accidentally, it does not suffocate because it is breathable, and it does not enter the inner part of the trachea and can be easily exhaled. Further, even when integrally formed by injection molding using a plastic material, since a sink mark is not generated in the airtight holding portion, a sufficient airtight function is satisfied.

[Brief description of drawings]

FIG. 1 is a vertical sectional view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing a first embodiment of the present invention.

FIG. 3 is a vertical sectional view showing a second embodiment of the present invention.

FIG. 4 is a vertical sectional view showing a third embodiment of the present invention.

FIG. 5 is a perspective view showing a third embodiment of the present invention.

FIG. 6 is a longitudinal sectional view showing a fourth embodiment of the present invention.

[Explanation of symbols]

 1 Cap 2 Main Body 3 Airtight Holding Section 4 Collar Section 5 First Groove 6 Second Groove 7 Writing Instrument Main Body

Claims (1)

[Scope of utility model registration request] 1. A cap for a writing implement or the like for preventing choking due to accidental ingestion, in which a groove serving as an air passage is provided in the axial direction on the outer surface of the cap, and an airtight holding portion for the tip of the writing is provided on the inner surface of the cap. A collar portion is provided on the outer surface of the front or rear position of the holding portion, the first groove in the axial direction is formed through the outer surface of the collar portion, and the outside of the cap except the outer surface of the position where the airtight holding portion is located. A cap for a writing instrument or the like having a second axial groove that is open at the front or rear end of the cap body.