JP2004345291A - Writing instrument - Google Patents

Writing instrument Download PDF

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Publication number
JP2004345291A
JP2004345291A JP2003147099A JP2003147099A JP2004345291A JP 2004345291 A JP2004345291 A JP 2004345291A JP 2003147099 A JP2003147099 A JP 2003147099A JP 2003147099 A JP2003147099 A JP 2003147099A JP 2004345291 A JP2004345291 A JP 2004345291A
Authority
JP
Japan
Prior art keywords
tail end
tail
barrel
batting
plug
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.)
Pending
Application number
JP2003147099A
Other languages
Japanese (ja)
Inventor
Akira Matsukawa
亮 松川
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.)
Sailor Pen Co Ltd
Original Assignee
Sailor Pen 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
Application filed by Sailor Pen Co Ltd filed Critical Sailor Pen Co Ltd
Priority to JP2003147099A priority Critical patent/JP2004345291A/en
Publication of JP2004345291A publication Critical patent/JP2004345291A/en
Pending legal-status Critical Current

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a writing instrument in which a completing point when a tail plug is screwed into a tail end opening of a shaft cylinder can be easily recognized and the tail plug can be surely fitted to the tail end opening of the shaft cylinder. <P>SOLUTION: In the writing instrument wherein a tail end part of a pen body 20 fitted on an apex opening of the shaft cylinder 10 is inserted into an inner ink-absorbed cotton 30, and a tail end part of the inner cotton is held by the tail plug 40 screwed in the tail end opening of the shaft cylinder, a projection 13 is formed on the inner face of the tail end opening of the shaft cylinder, and a recessed part 44 is formed on the outer peripheral face of the tail plug, and when the inner cotton is replaced and the tail plug is screwed into the tail end opening of the shaft cylinder, the projection of the shaft cylinder is engaged in the recessed part of the tail plug at the time when screwing is completed. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
本発明は、軸筒内にインキを吸蔵した中綿が内蔵された筆記具に関するものである。
【0002】
【従来の技術】
軸筒内にインキを吸蔵した中綿が内蔵された筆記具は、合成樹脂製の軸筒の先端開口に取り付けられたペン体の尾端部が中綿の先端部に差し込まれ、中綿の尾端部は軸筒の尾端開口に取り付けられた同じく合成樹脂製の尾栓で保持されている。そして、中綿内のインキがペン体に供給され、筆記に供される。
【0003】
ところで最近では、環境や資源保護の観点から廃棄物を減少する必要性が大きく、このために、中綿式の筆記具においても、中綿のインキを使い切ったときに、筆記具を使い捨てにせずに、中綿を新しいものに交換し、軸筒などの部品はそのまま活用して筆記具を長く使用することが多くなった。
【0004】
【発明が解決しようとする課題】
ユーザーが新しい中綿に交換するときは、中綿の尾端部を尾栓で保持し、この中綿を軸筒の尾端開口から挿入する。続いて、尾栓を軸筒の尾端開口にねじ込みながら中綿を前進させてペン体の尾端部を中綿の全面から差し込むようにする。このときユーサーは尾栓の螺合の完了点を認知するのが難しく、大きなトルクで尾栓を締めすぎる傾向がある。このため、合成樹脂で成形された軸筒や尾栓のねじ山が壊れ、螺合が緩んで尾栓が脱落することがある。
【0005】
そこで本発明は、尾栓を軸筒の尾端開口に螺合する際の完了点を容易に認知できて尾栓を確実に軸筒の尾端開口に取り付けることができる筆記具を提供することを目的とする。
【0006】
【課題を解決するための手段】
かかる目的を達成するために、本発明は、軸筒の先端開口に取り付けられたペン体の尾端部がインキを吸蔵した中綿の先端部に差し込まれ、中綿の尾端部が軸筒の尾端開口に螺着された尾栓で保持された筆記具において、軸筒の尾端開口の内面に突起を形成するとともに、尾栓の外周面に凹部を形成し、中綿を交換する際に、尾栓を軸筒の尾端開口にねじ込んで螺合したとき、螺合の完了時において軸筒の突起が尾栓の凹部に係合するようにする。
【0007】
【発明の実施の形態】
以下に、図面に基づいて本発明の実施の形態を具体的に説明する。図1において、合成樹脂で成形された軸筒10の先端はテーパー部11であり、テーパー部11の中心孔に筒状のペン体保持部15が形成されている。なお、テーパー部11は別部品の先口としてもよい。軸筒10内面の先端に複数本の中綿保持リブ14が形成されており、同じく内面の尾端側に、図2に示すように、内ねじ12が形成されている。
【0008】
尾栓40の内周面には複数本の中綿保持リブ45が形成され、外周面には、図3に示すように、外ねじ41が形成されており、軸筒10の内ねじ12と尾栓40の外ねじ41が螺合することにより尾栓40は軸筒10の尾端開口に取り付けられている。中綿30は、倦縮した極細繊維を引き揃えて棒状に成形されたものであり、水性インキを吸蔵している。この中綿30の前後が軸筒10の中綿保持リブ14および尾栓40の中綿保持リブ45で保持されて軸筒10内に収容されている。ペン体20は、連続気泡を有する合成樹脂からなる棒状体であり、ペン体保持部15に保持されている。そして、ペン体20の尾端部は中綿30に差し込まれている。したがって、中綿30に吸蔵された水性インキはペン体20に供給され、筆記に供される。また、非使用時には、軸筒10にキャップ50が嵌着され、インキがペン体20から蒸発するのを防止している。
【0009】
ここで、軸筒10の尾端開口の内面には、図2に示すように、一対の微小な突起13が形成されている。一方、図3に示すように、尾栓40の外周面であって大径部46の端面に隣接した位置には、一対の小突起42、43が形成されており、小突起42と小突起43の間が凹部44である。小突起42は外側面が傾斜状になっている。
【0010】
そして、中綿30のインキを使い切って新しい中綿30に交換する際、ユーザーが尾栓40を軸筒10の尾端開口にねじ込んで螺合するが、尾栓40の大径部46の端面が軸筒10の尾端開口縁に当接するときに、つまり、螺合の完了点において、図4に示すように、軸筒10の突起13が尾栓40の小突起42の傾斜面を乗り越えて凹部44に入り込む。このとき、カチッという嵌入音がするとともに回転抵抗が大きくなるので、ユーザーは螺合の完了点を認知することができ、ねじ込みを中止するので、大きなトルクで尾栓40を締めすぎることがなく、尾栓40を確実に軸筒10の尾端開口に取り付けることができる。
【0011】
【発明の効果】
以上説明したように、本発明は、軸筒の先端開口に取り付けられたペン体の尾端部がインキを吸蔵した中綿の先端部に差し込まれ、中綿の尾端部が軸筒の尾端開口に螺着された尾栓で保持された筆記具において、軸筒の尾端開口の内面に突起を形成するとともに、尾栓の外周面に凹部を形成し、中綿を交換する際に、尾栓を軸筒の尾端開口にねじ込んで螺合したとき、螺合の完了時において軸筒の突起を尾栓の凹部に係合させるので、尾栓を軸筒の尾端開口に螺合する際にユーザーは螺合の完了点を容易に認知できて尾栓を確実に軸筒の尾端開口に取り付けることができる。
【図面の簡単な説明】
【図1】本発明実施例の断面図である。
【図2】(A)軸筒尾端部の断面図、(B)は軸筒の端面図である。
【図3】(A)は尾栓の正面図、(B)は(A)図のa−a線における断面図である。
【図4】(A)は本発明要部の断面図、(B)は(A)図のb−b線における断面図である。
【符号の説明】
10 軸筒
12 内ねじ
13 突起
14 中綿保持リブ
20 ペン体
30 中綿
40 尾栓
41 外ねじ
44 凹部
45 中綿保持リブ
50 キャップ
[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a writing implement having a batting containing ink stored in a barrel.
[0002]
[Prior art]
In the writing implement with a filling filled with ink inside the barrel, the tail end of the pen body attached to the tip opening of the synthetic resin barrel is inserted into the tip of the filling, and the tail end of the filling is It is held by a tail plug, also made of synthetic resin, attached to the tail end opening of the barrel. Then, the ink in the batting is supplied to the pen body for writing.
[0003]
By the way, recently, there is a great need to reduce waste from the viewpoint of environmental protection and resource conservation.For this reason, even in the batting-type writing implement, when the batting ink is used up, the batting is not disposable, but the batting is used. In many cases, they replaced them with new ones and used writing tools for a long time while using parts such as barrels as they were.
[0004]
[Problems to be solved by the invention]
When a user replaces with a new batting, the tail end of the batting is held by a tail plug, and the batting is inserted through the tail end opening of the barrel. Subsequently, the batting is advanced while screwing the tail plug into the tail end opening of the barrel so that the tail end of the pen body is inserted from the entire surface of the batting. At this time, it is difficult for the user to recognize the completion point of the screwing of the tail plug, and the user tends to overtighten the tail plug with a large torque. For this reason, the thread of the barrel and the tail plug formed of synthetic resin may be broken, the screw may loosen, and the tail plug may fall off.
[0005]
Therefore, the present invention provides a writing instrument that can easily recognize the completion point when the tail plug is screwed into the tail end opening of the barrel, and can securely attach the tail plug to the tail end opening of the barrel. Aim.
[0006]
[Means for Solving the Problems]
In order to achieve this object, the present invention provides a pen barrel having a tail end attached to a tip end opening of a barrel inserted into a tip end of a pad filled with ink, and a tail end of the batting being a tail end of the barrel. In a writing instrument held by a tail plug screwed into the end opening, a projection is formed on the inner surface of the tail end opening of the barrel, and a concave portion is formed on the outer peripheral surface of the tail plug. When the plug is screwed into the tail end opening of the barrel and screwed together, the projection of the barrel engages with the recess of the tail plug when screwing is completed.
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. In FIG. 1, a tip of a shaft cylinder 10 formed of a synthetic resin is a tapered portion 11, and a cylindrical pen body holding portion 15 is formed in a center hole of the tapered portion 11. Note that the tapered portion 11 may be used as a front end of another component. A plurality of batting holding ribs 14 are formed at the tip of the inner surface of the barrel 10, and an inner screw 12 is formed at the tail end of the inner surface, as shown in FIG. 2.
[0008]
A plurality of batting retaining ribs 45 are formed on the inner peripheral surface of the tail plug 40, and an outer screw 41 is formed on the outer peripheral surface, as shown in FIG. The tail plug 40 is attached to the opening at the tail end of the barrel 10 when the external screw 41 of the plug 40 is screwed. The batting 30 is made of rods formed by gathering crumpled ultrafine fibers, and absorbs water-based ink. The front and rear of the batting 30 are held by the batting holding rib 14 and the batting holding rib 45 of the tail plug 40 and accommodated in the barrel 10. The pen body 20 is a rod-shaped body made of a synthetic resin having open cells, and is held by the pen body holding unit 15. The tail end of the pen body 20 is inserted into the batting 30. Therefore, the water-based ink absorbed in the batting 30 is supplied to the pen body 20 and used for writing. When not in use, the cap 50 is fitted to the barrel 10 to prevent ink from evaporating from the pen body 20.
[0009]
Here, a pair of minute projections 13 are formed on the inner surface of the tail end opening of the barrel 10 as shown in FIG. On the other hand, as shown in FIG. 3, a pair of small projections 42 and 43 is formed on the outer peripheral surface of the tail plug 40 and at a position adjacent to the end surface of the large diameter portion 46. The space between 43 is a concave portion 44. The small protrusion 42 has an inclined outer surface.
[0010]
When the user uses up the ink of the batting 30 and replaces it with a new batting 30, the user screwes the tail plug 40 into the opening at the tail end of the barrel 10, and the end face of the large diameter portion 46 of the tail plug 40 is As shown in FIG. 4, the projection 13 of the barrel 10 climbs over the inclined surface of the small projection 42 of the tail plug 40 when it comes into contact with the opening edge of the tail end of the barrel 10, that is, at the completion point of the screwing. Go into 44. At this time, since a click sound is made and the rotational resistance increases, the user can recognize the completion point of the screwing, and the screwing is stopped, so that the tail plug 40 is not excessively tightened with a large torque, The tail plug 40 can be securely attached to the tail end opening of the barrel 10.
[0011]
【The invention's effect】
As described above, according to the present invention, the tail end of the pen body attached to the tip opening of the barrel is inserted into the tip of the batting that has absorbed the ink, and the tail end of the batting is opened at the tail end of the barrel. In the writing instrument held by the tail plug screwed into the tail plug, a projection is formed on the inner surface of the tail end opening of the barrel, a recess is formed on the outer peripheral surface of the tail plug, and when replacing the batting, the tail plug is replaced. When the screw is screwed into the tail end opening of the barrel, when the screwing is completed, the projection of the barrel is engaged with the recess of the tail plug, so when the tail plug is screwed into the tail end opening of the barrel, The user can easily recognize the completion point of the screwing, and can securely attach the tail plug to the tail end opening of the barrel.
[Brief description of the drawings]
FIG. 1 is a sectional view of an embodiment of the present invention.
FIG. 2A is a cross-sectional view of a tail end of a barrel, and FIG. 2B is an end view of the barrel.
3A is a front view of a tail plug, and FIG. 3B is a cross-sectional view taken along line aa in FIG. 3A.
4A is a cross-sectional view of a main part of the present invention, and FIG. 4B is a cross-sectional view taken along line bb in FIG.
[Explanation of symbols]
REFERENCE SIGNS LIST 10 shaft cylinder 12 inner screw 13 protrusion 14 batting holding rib 20 pen body 30 batting 40 tail plug 41 outer screw 44 concave part 45 batting holding rib 50 cap

Claims (1)

軸筒の先端開口に取り付けられたペン体の尾端部がインキを吸蔵した中綿の先端部に差し込まれ、該中綿の尾端部が軸筒の尾端開口に螺着された尾栓で保持された筆記具において、
前記軸筒の尾端開口の内面に突起が形成されるとともに、尾栓の外周面に凹部が形成され、
中綿を交換する際に、尾栓を軸筒の尾端開口にねじ込んで螺合したとき、螺合の完了時において該突起が該凹部に係合することを特徴とする筆記具。
The tail end of the pen body attached to the tip opening of the barrel is inserted into the tip of the batting that has absorbed the ink, and the tail end of the batting is held by the tail plug screwed into the tail end opening of the barrel. Writing instrument
A projection is formed on the inner surface of the tail end opening of the barrel, and a recess is formed on the outer peripheral surface of the tail plug,
A writing implement characterized in that when replacing the batting, when the tail plug is screwed into the tail end opening of the barrel and screwed together, the projection engages with the recess when screwing is completed.
JP2003147099A 2003-05-26 2003-05-26 Writing instrument Pending JP2004345291A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2003147099A JP2004345291A (en) 2003-05-26 2003-05-26 Writing instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2003147099A JP2004345291A (en) 2003-05-26 2003-05-26 Writing instrument

Publications (1)

Publication Number Publication Date
JP2004345291A true JP2004345291A (en) 2004-12-09

Family

ID=33533727

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2003147099A Pending JP2004345291A (en) 2003-05-26 2003-05-26 Writing instrument

Country Status (1)

Country Link
JP (1) JP2004345291A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104494330A (en) * 2014-12-31 2015-04-08 苏州市职业大学 Friction adjusting type ball-point cap

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104494330A (en) * 2014-12-31 2015-04-08 苏州市职业大学 Friction adjusting type ball-point cap

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