JP2004114601A - Filling material type writing utensil - Google Patents

Filling material type writing utensil Download PDF

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Publication number
JP2004114601A
JP2004114601A JP2002283763A JP2002283763A JP2004114601A JP 2004114601 A JP2004114601 A JP 2004114601A JP 2002283763 A JP2002283763 A JP 2002283763A JP 2002283763 A JP2002283763 A JP 2002283763A JP 2004114601 A JP2004114601 A JP 2004114601A
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JP
Japan
Prior art keywords
core
shaft
main body
batting
tip
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.)
Granted
Application number
JP2002283763A
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Japanese (ja)
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JP3974489B2 (en
Inventor
Kenji Kobayashi
小林 賢二
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tombow Pencil Co Ltd
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Tombow Pencil Co Ltd
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
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Priority to JP2002283763A priority Critical patent/JP3974489B2/en
Publication of JP2004114601A publication Critical patent/JP2004114601A/en
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Publication of JP3974489B2 publication Critical patent/JP3974489B2/en
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Abstract

<P>PROBLEM TO BE SOLVED: To attach/detach a core element to/from a main-body barrel with a single motion without the use of a jig at the replacement of a filling-material core. <P>SOLUTION: In this filling-material type writing utensil, the core element 14, which is formed by attaching a tip core 13 and the filling-material core 14, serving as an ink absorbing-storing element, to a front barrel 6 of the core element, provided with a locking part 18 capable of being locked to an engaging hole 11, is housed in the main-body barrel 3 wherein the engaging hole 11 is provided near an opened front end, in such a manner that the locking part 18 is locked to the engaging hole 11; and the locking part 18 is unlocked from the engaging hole 11, so that the core element 14 can be taken out from the barrel 3. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、インク吸蔵体としてのカートリッジ式中綿芯を取り付けた芯体を本体軸内に収容した中綿式筆記具に関する。
【0002】
【従来の技術】
マーキングペンやサインペンなどの中綿式筆記具は、中綿芯を交換可能としたカートリッジ式のものと、交換不能の非カートリッジ式のものとがある。
前者は、後者よりも経済上の利点が認められるため、各種の形態のものが提案されている(たとえば、特許文献1、実用新案文献1,2参照)。
【0003】
【特許文献1】
特開2000−343880
【実用新案文献1】
実用新案登録第3023072号
【実用新案文献2】
実開平6−42254
【0004】
しかし、従来のカートリッジ式の中綿式筆記具は、中綿芯の交換が必ずしも容易ではない。
図6、図7は、従来の代表的なカートリッジ式の中綿式筆記具(01)において、中綿芯(02)を交換する際の手順を説明するための図である。
【0005】
中綿芯(02)を交換する際には、図6に示すように、まず、キャップ(03)を取り外す。
次いで、治具(04)を用いて、芯体(05)を本体軸(06)から取り外す。
芯体(05)は、芯体先軸(07)、先端芯(08)、中綿芯(09)の3者からなる。先端芯(08)は、その前端を突出させて、芯体先軸(07)の前端部に圧入されており、先端芯(08)の後端には、中綿芯(02)が着脱自在に外嵌されている。
【0006】
芯体先軸(07)の後端部には、雄ねじが螺設されており、本体軸(06)の前端部内周面に螺設された雌ねじとの螺合により、芯体先軸(07)が本体軸(06)の前端に強固に取り付けられている。
芯体先軸(07)のうち、本体軸(06)から突出する部分における後端部分の外周面には、軸線方向の複数の係合条(09)が設けられている。
【0007】
治具(04)は、筒体(04a)と、この筒体(04a)の外周面に直径方向の両側に延設された舌片(04b)(04b)とよりなり、筒体(04a)の内周面には、芯体先軸(07)における係合条(09)に係止する係止条(04c)が設けられている。
【0008】
治具(04)における筒体(04a)を、芯体先軸(07)に外嵌させ、治具(04)の係止条(04c)を、芯体先軸(07)の係合条(09)に係止させて、舌片(04b)(04b)を握持し、芯体先軸(07)を本体軸(06)に対して相対的に回転させることにより、図7に示すように、芯体(05)を本体軸(06)から離脱させる。
【0009】
次いで、芯体先軸(07)に圧入された先端芯(08)の後端に外嵌されている中綿芯(02)を後方に引張って取り外し、新しい中綿芯(02)と交換した後に、再度、治具(04)を用いて、芯体(05)を本体軸(06)に取り付ける。
【0010】
このように、従来のカートリッジ式の中綿式筆記具(01)は、中綿芯(02)の交換の際に、治具(04)を用いて行うという不便があり、その治具(04)を紛失するおそれもあった。
【0011】
【発明が解決しようとする課題】
本発明は、前記現状に鑑み、中綿芯の交換時における芯体の本体軸からの着脱を、治具を用いることなく行うことができるとともに、ワンタッチで着脱できるようにした中綿式筆記具を提供することを目的とする。
【0012】
【課題を解決するための手段】
本発明によると、上記課題は、次にようにして解決される。
(1) 開口させた前端近傍に係合孔を設けた本体軸内に、前記係合孔に係止し得る係止部を設けた芯体先軸に、先端芯と、インク吸蔵体としての中綿芯とを取り付けて形成した芯体を、前記係止部を係合孔に係止させて収容するとともに、この係止を解除することによって、芯体を本体軸から取り出し得るようにしたことを特徴とする中綿式筆記具とする。
【0013】
(2) 上記(1)項において、本体軸の前端部に内嵌させた芯体先軸の後端と、本体軸の内周面に設けた段部との間に、コイルばねを介在させ、芯体先軸における係止部を、本体軸における係合孔に係止させているときは、前記コイルばねが圧縮状態となるようにし、前記係止を解除することによって、芯体先軸に先端芯と中綿芯とを取り付けて形成した芯体を、前記コイルばねの付勢作用により、本体軸の前端開口から突出させるようにする。
【0014】
(3) 上記(2)項において、芯体先軸の後端に、コイルばねを一体的に取り付ける。
【0015】
(4) 上記(1)項〜(3)項のいずれかにおいて、係合孔を設けた本体軸の前端部に内嵌させた芯体先軸に、外向き係止爪を有する係止部を設けて、前記係合孔に係止させるとともに、本体軸の外側から、係合孔を通して、係止部を内側に押圧することにより、前記係止を解除し得るようにする。
【0016】
(5) 上記(1)項〜(4)項のいずれかにおいて、先端芯を、その前端を突出させた状態で芯体先軸内に圧入し、この先端芯の後端に着脱自在に中綿芯を取り付けて芯体を形成する。
【0017】
【発明の実施の形態】
図1は、本発明をマーキングペン(1)に適用した実施形態において、キャップ(2)を本体軸(3)から取り外した状態の斜視図である。
【0018】
図2は、本体軸(3)から芯体(4)を取り出した状態の斜視図、図3は、芯体(4)を本体軸(3)内に収容した状態の中央縦断面図、図4は、図3におけるIV−IV線縦断面図である。
【0019】
本発明のマーキングペン(1)は、本体軸(3)と、この本体軸(3)内に収容される芯体(4)と、本体軸(3)の前端に被せるキャップ(2)とよりなる。
図3に示すように、本体軸(3)は、筒部(5)の前端に本体先軸(6)、後端に尾栓(7)がそれぞれ取り付けられて形成されている。
【0020】
本体先軸(6)は、筒体(8)の前後方向のほぼ中央外側に鍔(9)が設けられ、この鍔(9)より後方の筒体部分(8a)が筒部(5)の前端内部に圧入されている。
鍔(9)より前方の筒体部分(8b)における前端(10)近傍には、係合孔(11)が穿設されている。
【0021】
尾栓(7)は、前端(7a)が開口し、後端(7b)が閉塞され、前後方向の中央よりやや後方の外側に鍔(7c)が設けられ、この鍔(7c)より前方部分が、筒部(5)の後端内部に圧入されている。
【0022】
芯体(4)は、芯体先軸(12)と先端芯(13)と中綿芯(14)とより形成されている。先端芯(13)は、その前端が突出する状態で、芯体先軸(12)内に圧入され、この先端芯(13)の後端に、中綿芯(14)が着脱自在に取り付けられている。中綿芯(14)は、インク吸蔵体としての機能を有し、この中に吸蔵されているインクは、先端芯(13)に送られ、先端芯(13)の前端(13a)が紙面等に押圧されることにより、転写される。
【0023】
図5は、先端芯(13)と中綿芯(14)を、芯体先軸(12)から取り外した状態を一部破断して示す斜視図である。
図3、図5に示すように、芯体先軸(12)は、筒体(15)の外周面が、前後方向の中央よりやや前方において拡径されて段部(16)が形成されるとともに、前端(15a)に向けて漸次縮径されている。
【0024】
前記段部(16)より後方部分の筒体(15)の周面が一部切り欠かれ、この切り欠き部(17)内に、外向き係止爪(18a)を有し、芯体先軸(12)の軸線に対して直角方向に弾性変形可能な係止部(18)が設けられている。
【0025】
芯体先軸(12)の後端(15b)には、コイルばね(19)が一体的に取り付けられている。
芯体先軸(12)の内周面には、軸線方向の3本の突条(20)が設けられている。
先端芯(13)が、その前端(13a)を突出させた状態で、芯体先軸(12)における3本の突条(20)間に圧入されて、芯体先軸(12)に固定されている。
【0026】
先端芯(13)の後端(13b)は、先細となっており、この後端(13b)に中綿芯(14)の前端(14a)が、着脱自在に外嵌されている。
図2、図3に示すように、芯体先軸(12)、先端芯(13)、中綿芯(14)の3者より形成される芯体(4)は、本体軸(3)内に、その前端(10)の開口(10a)から挿入されて、芯体先軸(12)における外向き係止爪(18a)を有する係止部(18)が、本体軸(3)における本体先軸(6)の係合孔(11)に係止されている。
【0027】
本体先軸(6)の内周面は、後半部分が縮径されて段部(8d)が形成されている。この段部(8d)と、芯体先軸(12)の後端(15b)間に介在するように設けられたコイルばね(19)は、圧縮状態となり、このコイルばね(19)の付勢により、芯体先軸(12)における外向き係止爪(18a)を有する係止部(18)は、本体先軸(6)における係合孔(11)の縁端面(11a)に押し付けられて、芯体(4)は、本体軸(3)内に安定よく収容されている。
【0028】
尾栓(7)の内周面(7d)には、前後方向の突条(7e)が設けられ、この突条(7e)の前端(7f)に、中綿芯(14)の後端(14b)が当接されて、先端芯(13)の後端(13b)に、取り付けた中綿芯(14)が、先端芯(13)から外れることを防止するようになっている。
【0029】
中綿芯(14)の交換のために、芯体(4)を本体軸(3)から取り出す際には、本体軸(3)の外側から、係合孔(11)を通して、外向き係止爪(18a)を有する係止部(18)を内側に押圧することにより、係止部(18)と係合孔(11)の係止は、容易に解除され、同時に、圧縮されたコイルばね(19)の付勢により、芯体(4)における芯体先軸(12)の後端(15b)が前方に押され、芯体(4)における芯体先軸(12)のほぼ全体が本体軸(3)の前端開口(10a)から飛び出すようにして突出する。
突出した芯体先軸(12)を掴んで、芯体(4)を本体軸(3)から容易に取り出すことができる。
【0030】
次いで、芯体(4)における中綿芯(14)を交換した後に、再び芯体(4)を本体軸(3)の前端開口(10a)から挿入することにより、芯体(4)における芯体先軸(12)の係止部(18)は、軸線に対して直角方向の外向きの弾性作用により、本体軸(3)の係合孔(11)と自動的に係止して、芯体(4)が本体軸(3)内に安定よく収容される。
【0031】
【発明の効果】
本発明によれば、次の効果が奏せられる。
(1) 請求項1記載の発明によれば、中綿芯の交換時における芯体の本体軸からの着脱を、治具を用いることなく行うことができるとともに、芯体を本体軸から取り出す際には、本体軸の外側から、係止孔を通して、係止部を内側に押し込むだけのワンタッチ操作で取り出すことができ、さらに芯体を本体軸内に収容する際にも、芯体を本体軸の前端開口から挿入するだけのワンタッチ操作で収容することができる。
【0032】
(2) 請求項2記載の発明によれば、上記(1)項に記載した効果を、良好に得ることができる。
【0033】
(3) 請求項3記載の発明によれば、芯体における係止部と、本体軸における係合孔との係止を解除して芯体を本体軸から取り出す際に、コイルばねが芯体から離脱して紛失することを、有効に防止することができる。
【0034】
(4) 請求項4記載の発明によれば、芯体における係止部と、本体軸における係合孔との係止の解除を、本体軸の外側から極めて容易に行うことができる。
【0035】
(5) 請求項5記載の発明によれば、芯体先軸における係止部を、本体軸における係合孔に係止させ、またはその係止を解除するだけで、芯体の本体軸への着脱を容易に行うことができるとともに、本体軸から取り出した芯体における中綿芯の交換も容易である。
【図面の簡単な説明】
【図1】本発明をマーキングペンに適用した実施形態において、キャップを本体軸から取り外した状態の斜視図である。
【図2】図1に示した実施形態において、本体軸から芯体を取り出した状態の斜視図である。
【図3】同じく、図1に示した実施形態において、芯体を本体軸内に収容した状態の中央縦断面図である。
【図4】図3におけるIV−IV線縦断面図である。
【図5】先端芯と中綿芯を、芯体先軸から取り外した状態を一部破断して示す斜視図である。
【図6】従来のカートリッジ式の中綿式筆記具において、中綿芯を交換する手順を説明するための図である。
【図7】同じく、従来のカートリッジ式の中綿式筆記具において、中綿芯を交換する手順を説明するための図である。
【符号の説明】
(1)マーキングペン
(2)キャップ
(3)本体軸
(4)芯体
(5)筒部
(6)本体先軸
(7)尾栓
(7a)前端
(7b)後端
(7c)鍔
(7d)内周面
(7e)突条
(7f)前端
(8)筒体
(8a)後方の筒体部分
(8b)前方の筒体部分
(8c)鍔
(8d)段部
(9)鍔
(10)前端
(10a)開口
(11)係合孔
(11a)縁端面
(12)芯体先軸
(13)先端芯
(13a)前端
(13b)後端
(14)中綿芯
(14a)前端
(14b)後端
(15)筒体
(15a)前端
(15b)後端
(16)段部
(17)切り欠き部
(18)係止部
(18a)外向き係止爪
(19)コイルばね
(20)突条
(01)中綿式筆記具
(02)中綿芯
(03)キャップ
(04)治具
(04a)筒体
(04b)舌片
(04c)係止条
(05)芯体
(06)本体軸
(07)芯体先軸
(08)先端芯
(09)係合条
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a batting-type writing instrument in which a core body having a cartridge-type batting core as an ink occluding body is accommodated in a main body shaft.
[0002]
[Prior art]
Filling-type writing instruments such as marking pens and felt-tip pens include cartridge-type ones in which the batting core is replaceable and non-cartridge-type ones in which the batting core is not replaceable.
Since the former has more economic advantages than the latter, various forms have been proposed (for example, see Patent Document 1, Utility Model Documents 1 and 2).
[0003]
[Patent Document 1]
JP 2000-343880
[Utility model document 1]
Utility Model Registration No. 3023072 [Utility Model Document 2]
6-42254
[0004]
However, in the conventional cartridge-type batting-type writing implement, the batting core is not always easily replaced.
FIG. 6 and FIG. 7 are diagrams for explaining a procedure for replacing the batting core (02) in the conventional typical cartridge type batting writing implement (01).
[0005]
When replacing the batting core (02), the cap (03) is first removed as shown in FIG.
Next, the core body (05) is removed from the main body shaft (06) using the jig (04).
The core (05) is composed of three members: a core tip (07), a tip core (08), and a batting core (09). The tip core (08) has its front end protruding and is press-fitted into the front end of the core body tip shaft (07), and the batting core (02) is detachably attached to the rear end of the tip core (08). Fitted outside.
[0006]
A male screw is threaded at the rear end of the core body shaft (07), and is screwed with a female screw threaded on the inner peripheral surface of the front end of the main body shaft (06). ) Is firmly attached to the front end of the main body shaft (06).
A plurality of axially extending engagement strips (09) are provided on an outer peripheral surface of a rear end portion of a portion of the core body front shaft (07) protruding from the main body shaft (06).
[0007]
The jig (04) includes a cylindrical body (04a) and tongue pieces (04b) and (04b) extending on both sides in the diameter direction on the outer peripheral surface of the cylindrical body (04a). On the inner peripheral surface of the body, there is provided a locking ridge (04c) for locking to the engaging ridge (09) of the core body tip shaft (07).
[0008]
The cylindrical body (04a) of the jig (04) is externally fitted to the core body front shaft (07), and the locking member (04c) of the jig (04) is engaged with the engagement member of the core body front shaft (07). (09), the tongue pieces (04b) and (04b) are gripped, and the core body tip shaft (07) is rotated relative to the main body shaft (06), as shown in FIG. Thus, the core body (05) is detached from the main body shaft (06).
[0009]
Next, after removing the batting core (02) fitted to the rear end of the leading core (08) press-fitted into the core body leading shaft (07) by pulling it backward and replacing it with a new batting core (02), The core (05) is attached to the main body shaft (06) again using the jig (04).
[0010]
As described above, the conventional cartridge-type batting-type writing implement (01) is inconvenient to use the jig (04) when replacing the batting core (02), and the jig (04) is lost. There was also a risk of doing so.
[0011]
[Problems to be solved by the invention]
The present invention has been made in view of the above-mentioned circumstances, and provides a batting-type writing implement that can be attached and detached from a main body shaft at the time of replacement of a batting core without using a jig, and that can be attached and detached with one touch. The purpose is to:
[0012]
[Means for Solving the Problems]
According to the present invention, the above-mentioned problem is solved as follows.
(1) In a main body shaft provided with an engagement hole near the opened front end, a core body front shaft provided with a locking portion capable of being locked to the engagement hole, a tip core, and an ink storage member A core body formed by attaching a batting core is accommodated by engaging the engaging portion with the engaging hole, and by releasing the engagement, the core body can be taken out from the main body shaft. A batting-type writing implement characterized by the following.
[0013]
(2) In the above item (1), a coil spring is interposed between the rear end of the core body front shaft fitted inside the front end of the main body shaft and the step provided on the inner peripheral surface of the main body shaft. When the locking portion of the core body front shaft is locked in the engagement hole of the main body shaft, the coil spring is brought into a compressed state, and the locking is released, whereby the core body front shaft is released. A core body formed by attaching a tip core and a batting core to the body shaft is made to protrude from the front end opening of the main body shaft by the urging action of the coil spring.
[0014]
(3) In the above item (2), a coil spring is integrally attached to the rear end of the core shaft.
[0015]
(4) The locking portion according to any one of the above items (1) to (3), having an outward locking claw on a core body front shaft fitted inside a front end portion of a main body shaft provided with an engagement hole. Is provided so as to be locked in the engaging hole, and the locking can be released by pressing the locking portion inward from the outside of the main body shaft through the engaging hole.
[0016]
(5) In any one of the above items (1) to (4), the front end core is press-fitted into the front end of the core body with its front end protruding, and is detachably attached to the rear end of the front end core. The core is attached to form a core.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a perspective view showing a state in which a cap (2) is removed from a main body shaft (3) in an embodiment in which the present invention is applied to a marking pen (1).
[0018]
FIG. 2 is a perspective view showing a state where the core body (4) is taken out from the main body shaft (3). FIG. 3 is a central longitudinal sectional view showing a state where the core body (4) is accommodated in the main body shaft (3). 4 is a vertical sectional view taken along the line IV-IV in FIG.
[0019]
The marking pen (1) of the present invention comprises a main body shaft (3), a core body (4) housed in the main body shaft (3), and a cap (2) that covers the front end of the main body shaft (3). Become.
As shown in FIG. 3, the main body shaft (3) is formed by attaching a main body front shaft (6) to a front end of a cylindrical portion (5) and a tail plug (7) to a rear end.
[0020]
The body tip shaft (6) is provided with a flange (9) substantially outside the center in the front-rear direction of the cylindrical body (8), and the cylindrical body part (8a) behind the flange (9) is formed of the cylindrical part (5). Pressed into the front end.
An engagement hole (11) is formed near the front end (10) of the cylindrical portion (8b) ahead of the flange (9).
[0021]
The tail plug (7) is open at the front end (7a), closed at the rear end (7b), provided with a flange (7c) slightly outside the center in the front-rear direction, and a front part from the flange (7c). Is press-fitted into the rear end of the tubular portion (5).
[0022]
The core body (4) is formed of a core body tip shaft (12), a tip core (13), and a batting core (14). The leading end core (13) is pressed into the leading end shaft (12) with its front end protruding, and a batting core (14) is detachably attached to the rear end of the leading end core (13). I have. The batting core (14) has a function as an ink occluding body, and the ink occluded therein is sent to the tip wick (13), and the front end (13a) of the tip wick (13) is placed on a paper surface or the like. When pressed, it is transferred.
[0023]
FIG. 5 is a perspective view showing a state in which the tip core (13) and the batting core (14) are removed from the core body tip shaft (12), with a part thereof broken away.
As shown in FIGS. 3 and 5, the outer peripheral surface of the cylindrical body (15) of the core body tip shaft (12) is expanded slightly in front of the center in the front-rear direction to form a step (16). At the same time, the diameter is gradually reduced toward the front end (15a).
[0024]
A part of the peripheral surface of the cylindrical body (15) behind the step (16) is cut out, and the cutout (17) has an outward locking claw (18a) therein. An engaging portion (18) that is elastically deformable in a direction perpendicular to the axis of the shaft (12) is provided.
[0025]
A coil spring (19) is integrally attached to the rear end (15b) of the core shaft (12).
Three protruding ridges (20) in the axial direction are provided on the inner peripheral surface of the core body tip shaft (12).
The tip core (13) is press-fitted between the three ridges (20) of the core tip shaft (12) with the front end (13a) protruding, and fixed to the core tip shaft (12). Have been.
[0026]
The rear end (13b) of the tip core (13) is tapered, and the front end (14a) of the batting core (14) is detachably fitted to the rear end (13b).
As shown in FIG. 2 and FIG. 3, a core body (4) formed by the three members of a core body tip shaft (12), a tip core (13), and a batting core (14) is placed inside the main body shaft (3). A locking portion (18) having an outward locking claw (18a) on the core body tip shaft (12) inserted through the opening (10a) at the front end (10) of the main body shaft (3). It is locked in the engagement hole (11) of the shaft (6).
[0027]
The inner peripheral surface of the body tip shaft (6) has a stepped portion (8d) formed by reducing the diameter of the rear half portion. The coil spring (19) provided so as to be interposed between the step (8d) and the rear end (15b) of the core shaft (12) is in a compressed state, and the bias of the coil spring (19) is applied. Accordingly, the locking portion (18) having the outward locking claw (18a) on the core body front shaft (12) is pressed against the edge end surface (11a) of the engagement hole (11) on the main body front shaft (6). The core body (4) is stably accommodated in the main body shaft (3).
[0028]
A ridge (7e) is provided on the inner peripheral surface (7d) of the tail plug (7), and a front end (7f) of the ridge (7e) is attached to a rear end (14b) of the batting core (14). ) Is contacted to prevent the batting core (14) attached to the rear end (13b) of the tip core (13) from coming off the tip core (13).
[0029]
When the core body (4) is taken out of the main body shaft (3) for replacement of the batting core (14), the outward locking claw is passed through the engaging hole (11) from outside the main body shaft (3). By pressing the locking portion (18) having (18a) inward, the locking between the locking portion (18) and the engagement hole (11) is easily released, and at the same time, the compressed coil spring ( By the biasing of 19), the rear end (15b) of the core body front shaft (12) of the core body (4) is pushed forward, and almost the entire core body front shaft (12) of the core body (4) becomes substantially the main body. The shaft (3) protrudes from the front end opening (10a) of the shaft (3).
The core body (4) can be easily taken out from the main body shaft (3) by grasping the projected core body shaft (12).
[0030]
Next, after replacing the batting core (14) in the core body (4), the core body (4) is inserted again from the front end opening (10a) of the main body shaft (3) to thereby obtain the core body in the core body (4). The locking portion (18) of the front shaft (12) automatically locks with the engaging hole (11) of the main body shaft (3) by an outward elastic action perpendicular to the axis, and The body (4) is stably housed in the main body shaft (3).
[0031]
【The invention's effect】
According to the present invention, the following effects can be obtained.
(1) According to the first aspect of the present invention, the core can be detached from the main shaft when the batting core is replaced without using a jig, and when the core is taken out from the main shaft. Can be taken out from the outside of the main body shaft by a one-touch operation simply by pushing the locking portion inward through the locking hole.Furthermore, when the core body is accommodated in the main body shaft, the core body can be taken out of the main body shaft. It can be accommodated by one-touch operation only by inserting from the front end opening.
[0032]
(2) According to the second aspect of the invention, the effect described in the above (1) can be obtained favorably.
[0033]
(3) According to the third aspect of the invention, when releasing the engagement between the locking portion of the core body and the engagement hole of the main body shaft and removing the core body from the main body shaft, the coil spring is used for the core body. It is possible to effectively prevent the user from being detached and lost.
[0034]
(4) According to the fourth aspect of the invention, it is possible to extremely easily release the locking between the locking portion of the core body and the engaging hole of the main body shaft from outside the main body shaft.
[0035]
(5) According to the fifth aspect of the present invention, the locking portion of the core body front shaft is locked to the engaging hole of the main body shaft, or the locking is released, so that the locking of the core body to the main body shaft is achieved. Can be easily attached and detached, and replacement of the batting core in the core taken out from the main body shaft is also easy.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a state in which a cap is removed from a main body shaft in an embodiment in which the present invention is applied to a marking pen.
FIG. 2 is a perspective view of the embodiment shown in FIG. 1 in a state where a core is taken out from a main body shaft.
FIG. 3 is a central longitudinal sectional view of the embodiment shown in FIG. 1 in a state where a core body is accommodated in a main body shaft.
FIG. 4 is a vertical sectional view taken along line IV-IV in FIG. 3;
FIG. 5 is a partially cutaway perspective view showing a state in which a tip core and a batting core are removed from a core body tip shaft.
FIG. 6 is a view for explaining a procedure for replacing a batting core in a conventional cartridge-based batting type writing instrument.
FIG. 7 is a view for explaining a procedure of replacing a batting core in a conventional cartridge-type batting writing instrument.
[Explanation of symbols]
(1) Marking pen (2) Cap (3) Body shaft (4) Core body (5) Tube part (6) Body tip shaft (7) Tail plug (7a) Front end (7b) Rear end (7c) Flange (7d) ) Inner peripheral surface (7e) Ridge (7f) Front end (8) Cylindrical body (8a) Rear cylindrical part (8b) Front cylindrical part (8c) Collar (8d) Step (9) Collar (10) Front end (10a) Opening (11) Engagement hole (11a) Edge end face (12) Core body tip shaft (13) Tip core (13a) Front end (13b) Rear end (14) Cotton core (14a) Front end (14b) End (15) Cylindrical body (15a) Front end (15b) Rear end (16) Step (17) Notch (18) Locking part (18a) Outward locking claw (19) Coil spring (20) Ridge (01) batting type writing implement (02) batting core (03) cap (04) jig (04a) cylindrical body (04b) tongue piece (04c) locking strip (05) core body (06) Axis (07) core destination axis (08) tip core (09) Kakarigojo

Claims (5)

開口させた前端近傍に係合孔を設けた本体軸内に、前記係合孔に係止し得る係止部を設けた芯体先軸に、先端芯と、インク吸蔵体としての中綿芯とを取り付けて形成した芯体を、前記係止部を係合孔に係止させて収容するとともに、この係止を解除することによって、芯体を本体軸から取り出し得るようにしたことを特徴とする中綿式筆記具。In a main body shaft provided with an engagement hole near the opened front end, a core body front shaft provided with a locking portion capable of locking to the engagement hole, a tip core, and a batting core as an ink occluding body. The core body formed by attaching the core is housed by locking the locking portion in the engagement hole, and by releasing the lock, the core body can be taken out from the main body shaft. Batting-style writing implement. 本体軸の前端部に内嵌させた芯体先軸の後端と、本体軸の内周面に設けた段部との間に、コイルばねを介在させ、芯体先軸における係止部を、本体軸における係合孔に係止させているときは、前記コイルばねが圧縮状態となるようにし、前記係止を解除することによって、芯体先軸に先端芯と中綿芯とを取り付けて形成した芯体を、前記コイルばねの付勢作用により、本体軸の前端開口から突出させるようにしたことを特徴とする請求項1記載の中綿式筆記具。A coil spring is interposed between a rear end of the core body front shaft internally fitted to the front end of the main body shaft and a step provided on the inner peripheral surface of the main body shaft, and a locking portion of the core body front shaft is provided. When locked in the engagement hole in the main body shaft, the coil spring is brought into a compressed state, and by releasing the lock, the tip core and the batting core are attached to the core body front shaft. The batting-type writing implement according to claim 1, wherein the formed core body is made to protrude from a front end opening of the main body shaft by an urging action of the coil spring. 芯体先軸の後端に、コイルばねを一体的に取り付けたことを特徴とする請求項2記載の中綿式筆記具。3. The batting-type writing implement according to claim 2, wherein a coil spring is integrally attached to a rear end of the core shaft. 係合孔を設けた本体軸の前端部に内嵌させた芯体先軸に、外向き係止爪を有する係止部を設けて、前記係合孔に係止させるとともに、本体軸の外側から、係合孔を通して、係止部を内側に押圧することにより、前記係止を解除し得るようにしたことを特徴とする請求項1〜3のいずれかに記載の中綿式筆記具。A locking portion having an outward locking claw is provided on the core body front shaft fitted inside the front end of the main body shaft having the engaging hole, and the locking portion is locked in the engaging hole and the outer side of the main body shaft is provided. The batting-type writing implement according to any one of claims 1 to 3, wherein the engaging portion can be released by pressing the engaging portion inward through the engaging hole. 先端芯を、その前端を突出させた状態で芯体先軸内に圧入し、この先端芯の後端に着脱自在に中綿芯を取り付けて芯体を形成したことを特徴とする請求項1〜4のいずれかに記載の中綿式筆記具。The core body is formed by press-fitting a tip core into a core tip shaft with its front end protruding, and detachably attaching a batting core to a rear end of the tip core. 4. The batting-type writing implement according to any one of 4.
JP2002283763A 2002-09-27 2002-09-27 Filling writing instrument Expired - Fee Related JP3974489B2 (en)

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JP2002283763A JP3974489B2 (en) 2002-09-27 2002-09-27 Filling writing instrument

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Country Link
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012045727A (en) * 2010-08-24 2012-03-08 Sakura Color Products Corp Writing utensil, and pen point member

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012045727A (en) * 2010-08-24 2012-03-08 Sakura Color Products Corp Writing utensil, and pen point member

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