JPH0450152Y2

JPH0450152Y2 -

Info

Publication number: JPH0450152Y2
Application number: JP1985072507U
Authority: JP
Priority date: 1985-05-16
Filing date: 1985-05-16
Publication date: 1992-11-26
Also published as: JPS61188883U

Description

【考案の詳細な説明】（産業上の利用分野）この考案は、キヤツプと軸筒との嵌合におい
て、筆記具先端部の気密性を保持しつつ、その嵌
合が円滑に行われるようにしたキヤツプと筆記具
の嵌合構造に関する。[Detailed description of the invention] (Industrial application field) This invention enables smooth fitting between the cap and barrel while maintaining the airtightness of the tip of the writing instrument. Regarding the fitting structure between a cap and a writing instrument.

（従来の技術）従来、キヤツプと筆記具の軸筒の嵌合におい
て、一端を閉塞し、他端の開口圧入部から軸筒を
挿入する乾燥防止用内キヤツプを具えるものは、
内キヤツプへの軸筒先端の嵌合により、内キヤツ
プ内の空気が圧縮されるため円滑に嵌合すること
が困難であり、円滑な嵌合をするためには、内キ
ヤツプ内に圧縮される空気を外に排出しなければ
ならず、その解決案として、開口圧入部の形状を
変えたり、途中に凸部あるいは凹部等の排気溝を
設けることが提案されている。（実開昭57−71770
号）。(Prior Art) Conventionally, when fitting a cap and a barrel of a writing instrument, one end of the cap is closed and the other end is provided with an inner cap for preventing drying, in which the barrel is inserted through an open press-fitting part.
When the tip of the shaft cylinder is fitted into the inner cap, the air inside the inner cap is compressed, making it difficult to fit smoothly. It is necessary to exhaust the air to the outside, and as a solution to this problem, it has been proposed to change the shape of the press-fit opening or to provide an exhaust groove such as a protrusion or a recess in the middle. (Jitsukai 57-71770
issue).

（考案が解決しようとする課題）しかし、上記乾燥防止用内キヤツプの開口圧入
部の途中に凸部あるいは凹部の排気溝を設ける手
段は、その加工が困難であり、排気効果も充分で
ないものである。(Problem to be solved by the invention) However, the method of providing an exhaust groove in the form of a convex or concave part in the middle of the opening press-fitted part of the inner cap for preventing dryness is difficult to process, and the exhaust effect is not sufficient. be.

そこで、この考案は上記開口圧入部の加工性を
改善するとともに、乾燥防止用内キヤツプの密閉
性を保持して、上記内キヤツプ内に圧縮される空
気の排出を容易にしようとするものである。 Therefore, this invention aims to improve the workability of the opening press-fit part, maintain the airtightness of the dry-preventing inner cap, and facilitate the discharge of the air compressed within the inner cap. .

（課題を解決するための手段）キヤツプ内に装着する乾燥防止用内キヤツプ
を、内壁に開口圧入部、環状突出部と環状溝を一
体に形成するものとし、環状溝と環状突出部基部
との間に内壁よりキヤツプ内に連通する排気孔を
設け、上記環状溝に筆記具の軸筒先端に設ける突
出部を嵌着してなるものである。(Means for Solving the Problems) The drying prevention inner cap to be installed inside the cap has an opening press-fitted part, an annular protrusion, and an annular groove integrally formed on the inner wall, and the annular groove and the annular protrusion base are connected to each other. An exhaust hole communicating with the inside of the cap from the inner wall is provided in between, and a protrusion provided at the tip of the barrel of the writing instrument is fitted into the annular groove.

（作用）上記構成を具えるので、軸筒先端に突出部を設
ける筆記具にキヤツプを挿嵌すると、キヤツプの
乾燥防止用内キヤツプの環状溝内に軸筒の突出部
が嵌合し、更に軸筒先端は環状突出部内に挿入さ
れて、乾燥を防止するように先端を密封するもの
であり、その上、軸筒先端の内キヤツプへの挿入
により生ずる圧縮空気は、排気孔をへてキヤツプ
内に放出されるから、圧縮空気の内圧によるキヤ
ツプの離脱を防止できるとともに十分な乾燥防止
効果をも有するものである。(Function) With the above structure, when the cap is inserted into a writing instrument having a protrusion at the tip of the barrel, the protrusion of the barrel fits into the annular groove of the inner cap for preventing drying of the cap, and The tip of the tube is inserted into the annular protrusion to seal the tip to prevent it from drying out, and the compressed air generated by inserting the tip of the tube into the inner cap passes through the exhaust hole into the cap. This prevents the cap from coming off due to the internal pressure of compressed air, and also has a sufficient drying prevention effect.

（実施例）この考案を図に示す実施例により更に説明す
る。１はキヤツプであり、５は弾性材からなる乾
燥防止用内キヤツプで、頭冠１０及び止めビス１
１で固定された接合リング１２を介してキヤツプ
１内に配置されている。乾燥防止用内キヤツプ５
のほぼ中央部分に筆記具の軸筒２に被嵌した時に
その先端部に密嵌できるようにした環状突出部６
を設け、軸筒２の突出部３が上記内キヤツプ５内
の開口部端縁に近接して設ける環状溝４に嵌合し
た時には筆記具とキヤツプ１との間に気密性が保
持されることになる。(Example) This invention will be further explained with reference to an example shown in the drawings. 1 is a cap, 5 is an inner cap made of elastic material to prevent dryness, and a crown 10 and a set screw 1 are attached.
It is arranged in the cap 1 via a connecting ring 12 fixed at 1. Inner cap for drying prevention 5
An annular protrusion 6 is provided approximately in the center of the writing instrument so that it can be tightly fitted to the tip when the writing instrument is fitted into the barrel 2 of the writing instrument.
When the protrusion 3 of the barrel 2 fits into the annular groove 4 provided close to the edge of the opening in the inner cap 5, airtightness is maintained between the writing instrument and the cap 1. Become.

排気孔９は環状溝４と環状突出部６の基部と内
キヤツプ５で形成する凹部８との間に設けられ、
筆記具の軸筒２が上記開口部端縁である開口圧入
部７から挿入される際、乾燥防止用内キヤツプ５
内に生ずる圧縮された空気を排気する。 The exhaust hole 9 is provided between the annular groove 4 and the recess 8 formed by the base of the annular protrusion 6 and the inner cap 5,
When the barrel 2 of the writing instrument is inserted from the opening press-fitting part 7 which is the edge of the opening, the inner cap 5 for preventing drying is inserted.
Exhaust the compressed air generated inside.

なお、上記排気孔９の位置は前記の通り環状溝
４と凹部８との間ならどこでもよく、その数も一
つ或は複数のいずれでもよい。そして、筆記具の
先端は環状突出部６により密閉して被嵌されるか
ら、先端部分の乾燥は充分に防止できるものであ
る。 As described above, the exhaust hole 9 may be located anywhere between the annular groove 4 and the recess 8, and the number thereof may be one or more. Since the tip of the writing instrument is hermetically fitted into the annular protrusion 6, drying of the tip can be sufficiently prevented.

（考案の効果）上記のとおり、一端を閉塞して他端を開口した
乾燥防止用内キヤツプにおいて、軸筒の突出部が
開口圧入部から挿入された際の圧縮された空気を
筆記具を係止する環状溝と環状突出部との間に設
けた排気口から排出し、筆記具の先端部は環状突
出部により密閉して被嵌するから乾燥防止用内キ
ヤツプの加工が極めて容易にでき軸筒とキヤツプ
のスムーズな嵌合が得られるばかりでなく、環状
突出部により筆記具先端の乾燥が充分防止できる
優れた効果があるものである。(Effect of the invention) As mentioned above, in the drying prevention inner cap that is closed at one end and opened at the other end, the compressed air when the protruding part of the barrel is inserted from the opening press-fit part is retained in the writing instrument. The writing instrument is discharged from the exhaust port provided between the annular groove and the annular protrusion, and the tip of the writing instrument is sealed and fitted into the annular protrusion, making it extremely easy to process the inner cap for preventing dryness. Not only does the cap fit smoothly, but the annular protrusion also has the excellent effect of sufficiently preventing the tip of the writing instrument from drying out.

[Brief explanation of drawings]

第１図はこの考案を実施したキヤツプの拡大断
面図であり、第２図は軸筒首部の説明図である。１……キヤツプ、２……軸筒、３……突出部、
４……環状溝、５……乾燥防止用内キヤツプ、６
……環状突出部、７……開口圧入部、８……凹
部、９……排気孔。 FIG. 1 is an enlarged sectional view of a cap embodying this invention, and FIG. 2 is an explanatory view of the barrel neck. 1...Cap, 2...Shaft cylinder, 3...Protrusion part,
4... Annular groove, 5... Inner cap for drying prevention, 6
. . . Annular protrusion, 7 . . . Open press-fitting portion, 8 . . . Recessed portion, 9 .

Claims

[Scope of utility model registration request]

A desiccation prevention inner cap that closes one end and opens the other end is installed inside the cap, and the inner wall of this desiccation prevention inner cap has an annular protrusion that protrudes toward the opening press-fit part, and an annular groove integrated with the opening press-fit part. An exhaust hole communicating with the inside of the cap from the inner wall of the inner cap is provided between the annular groove and the base of the annular protrusion, and the protrusion of the shaft cylinder, which is larger than the inner diameter of the opening press-fitting part, is formed in the inner cap. A fitting structure between a cap and a writing instrument, which is fitted into an annular groove of the cap and the tip of the barrel is fitted into an annular protrusion.