JP3463206B2 - Pen tip mounting structure - Google Patents

Pen tip mounting structure

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Publication number
JP3463206B2
JP3463206B2 JP28769896A JP28769896A JP3463206B2 JP 3463206 B2 JP3463206 B2 JP 3463206B2 JP 28769896 A JP28769896 A JP 28769896A JP 28769896 A JP28769896 A JP 28769896A JP 3463206 B2 JP3463206 B2 JP 3463206B2
Authority
JP
Japan
Prior art keywords
pen
pen tip
mounting structure
shaft
mounting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
JP28769896A
Other languages
Japanese (ja)
Other versions
JPH10114185A (en
Inventor
俊一 立川
Original Assignee
株式会社立川ピン製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社立川ピン製作所 filed Critical 株式会社立川ピン製作所
Priority to JP28769896A priority Critical patent/JP3463206B2/en
Publication of JPH10114185A publication Critical patent/JPH10114185A/en
Application granted granted Critical
Publication of JP3463206B2 publication Critical patent/JP3463206B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Pens And Brushes (AREA)

Description

【発明の詳細な説明】 【0001】 【発明の属する技術分野】本発明は、ペン軸に形成した
溝部にペン先を着脱させる形式のペン先取り付け構造に
関し、特に取付用基部の態様(形状やサイズ)が異なる
各種ペン先を選択的に取り付けることができるようにし
たペン先取り付け構造、すなわちペン軸に関する。 【0002】図5は、従来のペン先取り付け構造を示す
説明図であり、 (a)は例えば太字用のペンの場合、 (b)
および (c)はいわゆる丸ペンの場合を示している。 【0003】ここで、3〜5はペン先、3a〜5aは各
ペン先の取付用基部、6〜8はペン軸、6a〜8aは円
柱状のペン先受部、6b〜8bは溝部をそれぞれ示して
おり、ペン先3の取付用基部3aは半円状に湾曲し、ま
た、ペン先4および5の取付用基部4aおよび5aは円
筒状でその縦方向(ペン先の長手方向)にスリットが形
成されている。 【0004】また、 (a)のペンの取付用基部3aの径は
(b)および (c)のペンのそれよりも大きく、 (b)のペン
の取付用基部4aの径は (c)のペンのそれよりも小さ
く、そのため、これらのペン先3〜5が取り付けられる
各ペン軸6〜8のペン先受部6a〜8aおよび溝部6b
〜8bの径方向の大きさはそれぞれ異なっている。 【0005】各ペンの、取付用基部の径とペン先受部や
溝部のそれとの関係は、概略、 ・取付用基部3aの径は溝部6bのそれよりも少し長
く、 ・取付用基部4aの径はペン先受部7aのそれよりも少
し短く、 ・取付用基部5aの径はペン先受部8aのそれよりも少
し長く、かつ溝部8bのそれよりも短い、といった内容
に設定される。 【0006】また、各取付用基部3a〜5aは、いくら
かの弾性を有し、それをペン軸に取り付けたときには、
この弾性に抗した状態に僅かながら変形することにより
ペン先受部6a〜8aや溝部6b〜8bに係止される。 【0007】すなわち、 ・ペン先3の場合、その取付用基部3aの両端部分が内
側に縮められた状態(図2参照) ・ペン先4の場合、その取付用基部4aの全体が外側に
広げられた状態(図3参照) ・ペン先5の場合、その取付用基部5aの全体が内側に
縮められた状態(図4参照)のようになる。 【0008】 【発明が解決しようとする課題】このように、従来の、
ペン軸に形成した溝部にペン先を着脱させる形式のペン
先取り付け構造では、この溝部を、取付用基部の形状や
サイズが異なる各種ペン先と1対1対応のものにしてい
るので、利用者は、ペン軸についても、使用予定のペン
先の種類分だけのものを用意しなければならず、また供
給側においても各種のペン軸を生産、管理しなければな
らず、経済的な点での利便性にかけるという問題点があ
った。 【0009】そこで、本発明では、取付用基部の形状や
サイズが異なる各種ペン先を取り付けることが可能なペ
ン軸を提供して、もともと書記部(ペン先)の個性とは
直接の関連性がないペン軸を各種ペン先のいわば共通ツ
ールとして取り扱うことにより、各種ペン先の購入意欲
を高め、またペン軸の生産・管理を効率的に行なえるよ
うにすることを目的とする。 【0010】 【課題を解決するための手段】本発明では、この目的を
達成するため、「ペン軸に形成した凹部にペン先を着脱
させる形式のペン先取り付け構造において、前記凹部と
して、各種ペン先の、異なる形態の複数の取付用基部に
対応する同心円状の複数の溝部を用い、これらの各種ペ
ン先を選択的に取り付けることができるようにしたこと
を特徴とするペン先取り付け構造」を用いている。 【0011】このような構成をとっているので、製造元
や販売店などは共通ペン軸だけを生産、管理するような
形にしてもよく、また利用者は複数種類のペン先を使い
わける場合にも一つの共通ペン軸だけを用意すればよ
い。 【0012】 【発明の実施の形態】図1乃至図4を参照して本発明の
実施の形態を説明する。各図において、1はアタッチメ
ント、1aは外側の筒状部、1bは外側の溝部、1cは
内側の筒状部、1dは内側の溝部、1eは中央の円柱状
部、2は共通ペン軸、2aはアタッチメント1の取付用
凹部をそれぞれ示している。なお、3種類のペン先、お
よびそれぞれの取付用基部は図5と同じものであり、同
図の参照番号を援用する。 【0013】図1は、本発明のペン取り付け構造の概要
を示す説明図である。アタッチメント1は共通ペン軸2
の取付用凹部2aに接着や螺子止めなどによって固定さ
れており、アタッチメント1の外側の溝部1bにはペン
先3がセットされ、また内側の溝部1dにはペン先4お
よび5がセットされる。 【0014】図2は、ペン先3を共通ペン軸2のアタッ
チメント1を挿着した状態を示す断面図であり、(a)
は長手方向の断面図、(b)は(a)のA−A線に沿っ
た断面図である。 【0015】外側の溝部1bに挿入されるペン先3の取
付用基部3aは、外側の筒状部1aより少し長い径であ
るため、その両端部が筒状部1aの内周面で曲げられた
状態となって、当該取付用基部は、図2(b)に示すよ
うに外側の筒状部1aの内周面と内側の筒状部1cの外
周面との間に係止される。 【0016】図3は、ペン先4を共通ペン軸2のアタッ
チメント1を挿着した状態を示す断面図であり、(a)
は長手方向の断面図、(b)は(a)のB−B線に沿っ
た断面図である。 【0017】内側の溝部1dに挿入されるペン先4の取
付用基部4aは、中央の円柱状部1eより少し短かい径
であるため、その全体が円柱状部1eで径方向に押し広
げられた状態となって、当該取付用基部は、図3(b)
に示すように円柱状部1eの外周面に係止される。 【0018】図4は、ペン先5を共通ペン軸2のアタッ
チメント1を挿着した状態を示す断面図であり、(a)
は長手方向の断面図、(b)は(a)のC−C線に沿っ
た断面図である。 【0019】内側の溝部1dに挿入されるペン先5の取
付用基部5aは、内側の筒状部1cより少し短い径であ
るため、その全体が筒状部1cで径方向に押し縮められ
た状態となり、当該取付用基部は、図4(b)に示すよ
うに円柱状部1eの外周面に係止される。 【0020】 【発明の効果】本発明は、このように、取付用基部の形
状やサイズが異なる各種ペン先を取り付けることが可能
なペン先取り付け構造(ペン軸)を提供しているので、
利用者は複数種類のペン先を使いわける場合にも一つの
共通ペン軸だけを用意すればよく、またペン軸の生産・
管理を効率的に行なえるようにすることができる。
Description: BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a pen tip mounting structure in which a pen tip is attached to and detached from a groove formed in a pen shaft. The present invention relates to a pen tip mounting structure capable of selectively mounting various pen tips having different sizes), that is, a pen shaft. FIGS. 5A and 5B are explanatory views showing a conventional pen tip mounting structure. FIG. 5A shows a case of a bold pen, for example, and FIG.
(C) shows the case of a so-called round pen. Here, 3 to 5 are pen tips, 3a to 5a are mounting bases of the respective pen tips, 6 to 8 are pen shafts, 6a to 8a are cylindrical pen tip receiving portions, and 6b to 8b are grooves. The mounting base 3a of the pen tip 3 is curved in a semicircular shape, and the mounting bases 4a and 5a of the pen tips 4 and 5 are cylindrical and extend in the longitudinal direction (the longitudinal direction of the pen tip). A slit is formed. The diameter of the pen mounting base 3a shown in FIG.
The diameter of the base 4a for mounting the pen in (b) is smaller than that of the pen in (c), so that these nibs 3 to 5 are attached. Pen tip receiving portions 6a to 8a and groove portions 6b of respective pen shafts 6 to 8
88b have different radial sizes. The relationship between the diameter of the mounting base and the pen tip receiving portion and the groove of each pen is roughly as follows: the diameter of the mounting base 3a is slightly longer than that of the groove 6b; The diameter is set slightly shorter than that of the pen tip receiving portion 7a. The diameter of the mounting base 5a is set slightly longer than that of the pen tip receiving portion 8a and shorter than that of the groove portion 8b. Also, each of the mounting bases 3a to 5a has some elasticity, and when it is mounted on the pen shaft,
By being slightly deformed against this elasticity, it is locked by the pen tip receiving portions 6a to 8a and the groove portions 6b to 8b. [0007] In the case of the pen tip 3, both ends of the mounting base 3a are contracted inward (see FIG. 2). In the case of the pen tip 4, the entire mounting base 4a is expanded outward. The pen tip 5 is in a state where the entire mounting base 5a is contracted inward (see FIG. 4). [0008] As described above, the conventional
In a pen tip mounting structure in which a pen tip is attached to and detached from a groove formed in a pen shaft, the groove is made to correspond one-to-one with various pen tips having different shapes and sizes of a mounting base. As for the pen shaft, it is necessary to prepare a pen shaft only for the type of the pen tip to be used, and the supply side must produce and manage various pen shafts. There is a problem that it puts on the convenience of. In view of the above, the present invention provides a pen shaft to which various types of nibs having different shapes and sizes of the mounting base can be attached, and originally has a direct relationship with the personality of the writing section (pen tip). It is an object of the present invention to increase the willingness to purchase various nibs and to efficiently carry out the production and management of the nib by treating the non-pen axes as a common tool of various nibs. In order to achieve the above object, the present invention provides a pen tip mounting structure in which a pen tip is attached to and detached from a concave portion formed on a pen shaft. The above described nib mounting structure, characterized in that a plurality of concentric grooves corresponding to a plurality of mounting bases in different forms can be used to selectively mount these various nibs. Used. [0011] With such a configuration, a manufacturer or a store may produce and manage only a common pen shaft, and a user may use a plurality of types of pens. Only one common pen shaft need be prepared. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. In each figure, 1 is an attachment, 1a is an outer cylindrical portion, 1b is an outer groove portion, 1c is an inner cylindrical portion, 1d is an inner groove portion, 1e is a central columnar portion, 2 is a common pen shaft, Reference numeral 2a denotes a mounting recess of the attachment 1. Note that the three types of pens and the respective mounting bases are the same as those in FIG. 5, and the reference numerals in FIG. FIG. 1 is an explanatory view showing an outline of a pen mounting structure of the present invention. Attachment 1 is common pen shaft 2
Are fixed to the mounting recess 2a by bonding or screwing, and the pen tip 3 is set in the outer groove 1b of the attachment 1, and the pen tips 4 and 5 are set in the inner groove 1d. FIG. 2 is a cross-sectional view showing a state where the attachment 1 of the common pen shaft 2 is attached to the pen tip 3 and FIG.
Is a longitudinal sectional view, and (b) is a sectional view taken along line AA of (a). Since the mounting base 3a of the pen tip 3 inserted into the outer groove 1b has a slightly longer diameter than the outer cylindrical portion 1a, both ends thereof are bent at the inner peripheral surface of the cylindrical portion 1a. In this state, the mounting base is locked between the inner peripheral surface of the outer cylindrical portion 1a and the outer peripheral surface of the inner cylindrical portion 1c as shown in FIG. 2 (b). FIG. 3 is a sectional view showing a state in which the attachment 1 of the common pen shaft 2 is attached to the pen tip 4 and FIG.
Is a longitudinal sectional view, and (b) is a sectional view taken along line BB of (a). Since the mounting base 4a of the pen tip 4 inserted into the inner groove 1d has a diameter slightly shorter than the central columnar portion 1e, the whole of the base portion 4a is radially expanded by the columnar portion 1e. In this state, the mounting base is positioned as shown in FIG.
As shown in (1), it is locked on the outer peripheral surface of the columnar portion 1e. FIG. 4 is a sectional view showing a state where the attachment 1 of the common pen shaft 2 is attached to the pen tip 5 and FIG.
Is a cross-sectional view in the longitudinal direction, and (b) is a cross-sectional view along the line CC in (a). Since the mounting base 5a of the pen tip 5 inserted into the inner groove 1d has a diameter slightly shorter than the inner cylindrical portion 1c, the whole thereof is radially compressed by the cylindrical portion 1c. In this state, the mounting base is locked to the outer peripheral surface of the columnar portion 1e as shown in FIG. As described above, the present invention provides a pen tip mounting structure (pen shaft) to which various pen tips having different shapes and sizes of the mounting base can be mounted.
The user only needs to prepare one common pen shaft even when using different types of pen nibs.
Management can be performed efficiently.

【図面の簡単な説明】 【図1】本発明の、ペン先取り付け構造の概要を示す説
明図である。 【図2】本発明の、ペン先3を共通ペン軸2のアタッチ
メント1を挿着した状態を示す断面図である。 【図3】本発明の、ペン先4を共通ペン軸2のアタッチ
メント1を挿着した状態を示す断面図である。 【図4】本発明の、ペン先5を共通ペン軸2のアタッチ
メント1を挿着した状態を示す断面図である。 【図5】従来の、ペン先取り付け構造を示す説明図であ
る。 【符号の説明】 1・・・アタッチメント 1a・・外側の筒状部 1b・・外側の溝部 1c・・内側の筒状部 1d・・内側の溝部 1e・・中央の円柱状部 2・・・共通ペン軸 2a・・アタッチメントの取付用凹部 3〜5・・・ペン先 3a〜5a・・・取付用基部 6〜8・・・ペン軸 6a〜8a・・・円柱状のペン先受部 6b〜8b・・・溝部
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory view showing an outline of a pen tip attaching structure of the present invention. FIG. 2 is a cross-sectional view showing a state in which an attachment 1 of a common pen shaft 2 is attached to a pen tip 3 according to the present invention. FIG. 3 is a cross-sectional view showing a state in which an attachment 1 of a common pen shaft 2 is attached to a pen tip 4 according to the present invention. FIG. 4 is a cross-sectional view showing a state in which an attachment 1 of a common pen shaft 2 is attached to a pen tip 5 according to the present invention. FIG. 5 is an explanatory view showing a conventional pen tip mounting structure. [Description of Signs] 1... Attachment 1a... Outer cylindrical portion 1b... Outer groove portion 1c... Inner cylindrical portion 1d... Inner groove portion 1e. Common pen shaft 2a Attachment mounting recesses 3-5 Pen tip 3a-5a Mounting base 6-8 Pen shaft 6a-8a Column-shaped pen tip receiving part 6b ... 8b ... groove

Claims (1)

(57)【特許請求の範囲】 【請求項1】 ペン軸に形成した凹部にペン先を着脱さ
せる形式のペン先取り付け構造において、 前記凹部として、各種ペン先の、異なる形態の複数の取
付用基部に対応する同心円状の複数の溝部を用い、 これらの各種ペン先を選択的に取り付けることができる
ようにしたことを特徴とするペン先取り付け構造。
(57) [Claim 1] In a pen tip mounting structure of a type in which a pen tip is attached to and detached from a concave portion formed in a pen shaft, a plurality of different types of mounting various pen tips as the concave portion. A pen tip mounting structure characterized in that a plurality of concentric grooves corresponding to a base are used to selectively mount these various nibs.
JP28769896A 1996-10-09 1996-10-09 Pen tip mounting structure Expired - Fee Related JP3463206B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP28769896A JP3463206B2 (en) 1996-10-09 1996-10-09 Pen tip mounting structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP28769896A JP3463206B2 (en) 1996-10-09 1996-10-09 Pen tip mounting structure

Publications (2)

Publication Number Publication Date
JPH10114185A JPH10114185A (en) 1998-05-06
JP3463206B2 true JP3463206B2 (en) 2003-11-05

Family

ID=17720586

Family Applications (1)

Application Number Title Priority Date Filing Date
JP28769896A Expired - Fee Related JP3463206B2 (en) 1996-10-09 1996-10-09 Pen tip mounting structure

Country Status (1)

Country Link
JP (1) JP3463206B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019162736A (en) * 2018-03-19 2019-09-26 株式会社立川ピン製作所 Writing instrument

Also Published As

Publication number Publication date
JPH10114185A (en) 1998-05-06

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