JP6716438B2 - fountain pen - Google Patents

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JP6716438B2
JP6716438B2 JP2016229145A JP2016229145A JP6716438B2 JP 6716438 B2 JP6716438 B2 JP 6716438B2 JP 2016229145 A JP2016229145 A JP 2016229145A JP 2016229145 A JP2016229145 A JP 2016229145A JP 6716438 B2 JP6716438 B2 JP 6716438B2
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ink
groove
pen
pen core
core
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JP2018083392A (en
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清隆 芳野
清隆 芳野
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Pilot Corp KK
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Pilot Corp KK
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Description

本発明は万年筆に関し、さらに詳細には、ペン芯の後方にインキ吸入器を装着してインキタンク内にインキの吸入を行う万年筆に関する。 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fountain pen, and more particularly, to a fountain pen in which an ink inhaler is mounted behind a pen core to suck ink into an ink tank.

従来より、ペン芯の後方に装着したインキ吸入器を操作することで、インキタンク内へインキを吸入する構造の万年筆は知られている。
例えば、特許文献１では、軸筒内にある塗布液貯留部（インキタンク）で前進したスリーブが後方へ移動することで、液体貯留部（インキタンク）に負圧を生じさせ、インキ瓶のインキ中に没入させた液貯留芯（ペン芯）を介して液体貯留部（インキタンク）にインキを吸入する万年筆が記載されている。
このような万年筆では、インキを吸入する際に、ペン芯のインキ溝と空気溝との両方を使用してインキ瓶のインキを吸入させることから、ペン芯の空気溝に対しても、インキを貯留させることができる構造が、インキをより多く万年筆に保持させることに適しており、ペン芯の前方までインキを貯留できた方がよい。 Conventionally, a fountain pen having a structure in which ink is sucked into an ink tank by operating an ink inhaler mounted behind a pen core is known.
For example, in Patent Document 1, when the sleeve that has advanced in the coating liquid storage portion (ink tank) in the barrel moves backward, negative pressure is generated in the liquid storage portion (ink tank), and the ink in the ink bottle There is described a fountain pen that sucks ink into a liquid storage section (ink tank) through a liquid storage core (pen core) immersed therein.
With such a fountain pen, when inhaling the ink, the ink in the ink bottle is inhaled by using both the ink groove and the air groove of the pen core. The structure that can store the ink is suitable for holding more ink on the fountain pen, and it is better that the ink can be stored up to the front of the pen core.

しかしながら、空気を通すための空気溝の毛管力は弱く、ペン芯の前方の空気溝に貯留されたインキは衝撃で落下して紙面を汚してしまいやすいことから、書き始めの方で、ペン芯の前方に位置する空気溝に残ったインキを使用できる構造が求められている。 However, the capillary force of the air groove for passing air is weak, and the ink stored in the air groove in front of the pen core tends to drop due to impact and stain the paper surface. There is a need for a structure that can use the ink remaining in the air channels located in front of the.

特開平１１−２３５５４８号公報JP, 11-235548, A

本発明では、ペン芯の前方に位置する空気溝に入ったインキを、インキ吸入後の書き始めの方で、筆記に使用することができる万年筆を得ることを目的とする。 It is an object of the present invention to obtain a fountain pen that can be used for writing with ink entering an air groove located in front of a pen core at the beginning of writing after inhaling ink.

本発明は、
「インキ溝が上側面に形成され空気溝が前方から後方に渡って形成されたペン芯と、該ペン芯の上側面に隣設されるペン体とを、軸筒の前方開口部に挿着した万年筆であって、前記ペン芯の中間部に前記インキ溝と前記空気溝とを連結する連結溝が形成され、前記連結溝の毛管力が、該連結溝に隣設した部分の空気溝より大きく、該連結溝に隣接した部分のインキ溝より小さい構造の万年筆。」である。 The present invention is
"A pen core having an ink groove formed on the upper side surface and an air groove extending from the front side to the rear side and a pen body adjacent to the upper side surface of the pen core are inserted into the front opening of the barrel. In the fountain pen, a connecting groove for connecting the ink groove and the air groove is formed in an intermediate portion of the pen core, and the capillary force of the connecting groove is greater than that of the air groove of the portion adjacent to the connecting groove. It is a fountain pen that is large and has a structure smaller than the ink groove in the portion adjacent to the connecting groove."

連結溝の毛管力を、該連結溝に隣設した部分の空気溝より大きく、該連結溝に隣接した部分のインキ溝より小さくする、つまり、連結溝の断面積を、該連結溝に隣設した部分の空気溝より小さく、該連結溝に隣接した部分のインキ溝より大きくすることで、書き始めた際に、インキ吸引後に空気溝に残ったインキが連結溝へ流動し、次いで連結溝のインキをインキ溝に流動させることができる。したがって、インキ吸入後に空気溝の前方に残っていたインキは、書き始めの方で、連結溝を介してインキ溝へ流動するので、衝撃でペン芯から落下して紙面を汚してしまうことが防止される。 The capillary force of the connecting groove is made larger than the air groove of the portion adjacent to the connecting groove and smaller than the ink groove of the portion adjacent to the connecting groove, that is, the cross-sectional area of the connecting groove is provided adjacent to the connecting groove. By making the ink groove smaller than the air groove in the portion formed and larger than the ink groove in the portion adjacent to the connecting groove, the ink remaining in the air groove after sucking the ink flows into the connecting groove when writing is started, and then the connecting groove The ink can be made to flow into the ink groove. Therefore, the ink left in front of the air groove after inhaling ink flows to the ink groove through the connecting groove at the beginning of writing, so it is possible to prevent the ink from falling from the pen core and contaminating the paper surface due to impact. To be done.

さらに、連結溝に隣設した部分の空気溝をペン芯の外方へ開放した形状とし、連結溝と開放部とを連続させることにより、ペン芯を成形する際に、空気溝を形成する細いコアピンに対し、インキ溝及び空気溝を形成する両キャビティを当接させて、コアピンの芯ブレを防止させ、コアピンの破損も防止することもできる。このような製造方法により成形したペン芯は寸法精度が安定する。 Further, the air groove of the portion adjacent to the connecting groove is opened to the outside of the pen core, and the connecting groove and the open portion are continuous to form an air groove when the pen core is molded. Both cavities forming the ink groove and the air groove may be brought into contact with the core pin to prevent the core pin from deviating and preventing damage to the core pin. The pen core molded by such a manufacturing method has stable dimensional accuracy.

本発明の万年筆によれば、ペン芯の前方に位置する空気溝に入ったインキが、インキ吸入後の書き始めの方で、連結溝を介してインキ溝へ流動して、筆記に使用することができる。 According to the fountain pen of the present invention, the ink in the air groove located in front of the pen core flows into the ink groove through the connecting groove at the beginning of writing after the ink is sucked, and is used for writing. You can

図１は、本実施例の万年筆を示す縦断面図である。FIG. 1 is a vertical sectional view showing the fountain pen of this embodiment. 図２は、要部拡大図である。FIG. 2 is an enlarged view of a main part. 図３は、図２のＡ−Ａ線端面図である。FIG. 3 is an end view taken along the line AA of FIG. 図４は、ペン芯の斜視図で、図４Ａはペン体側から見た図で、図４Ｂはその反対側から見た図である。FIG. 4 is a perspective view of the pen core, FIG. 4A is a view seen from the pen body side, and FIG. 4B is a view seen from the opposite side. 図５は、ペン芯を射出成形している第一状態の断面斜視図で、図５Ａはペン体側から見た図で、図５Ｂはその反対側から見た図である。5 is a sectional perspective view of the first state in which the pen core is injection molded, FIG. 5A is a view seen from the pen body side, and FIG. 5B is a view seen from the opposite side. 図６は、ペン芯を射出成形している第二状態の断面斜視図で、図６Ａはペン体側から見た図で、図６Ｂはその反対側から見た図である。6 is a sectional perspective view of a second state in which the pen core is injection molded, FIG. 6A is a view seen from the pen body side, and FIG. 6B is a view seen from the opposite side. 図７は、インキ瓶よりインキを吸入する状態を示す図である。FIG. 7 is a diagram showing a state where ink is sucked from the ink bottle. 図８は、インキ瓶よりインキを吸入した状態を示す図である。FIG. 8 is a diagram showing a state where ink is sucked from the ink bottle. 図９は、インキを吸入した状態の要部拡大図である。FIG. 9 is an enlarged view of a main part in a state where ink is sucked. 図１０は、筆記を行っている状態の要部拡大図である。FIG. 10 is an enlarged view of a main part in a state where writing is performed.

次に、図面を参照しながら説明を行うが、本発明は以下の実施例に限定されるものではない。
以下、図面を参照して本実施例の万年筆について説明をする。本実施例においては、ペン体がある方を前方と表現し、その反対側を後方と表現する。説明を分かり易くするために、図面中の同様の部材、同様の部分については同じ符号を付してある。 Next, description will be given with reference to the drawings, but the present invention is not limited to the following embodiments.
The fountain pen of this embodiment will be described below with reference to the drawings. In the present embodiment, the side with the pen body is expressed as the front and the opposite side is expressed as the rear. In order to make the description easy to understand, the same members and similar parts in the drawings are denoted by the same reference numerals.

図１は、本実施例の万年筆を示す縦断面図である。図２は、図１の要部拡大図である。図３は、図２のＡ−Ａ線端面図である。図４は、ペン芯の斜視図で、図４Ａはペン体側から見た図で、図４Ｂはその反対側から見た図である。 FIG. 1 is a vertical sectional view showing the fountain pen of this embodiment. FIG. 2 is an enlarged view of a main part of FIG. FIG. 3 is an end view taken along the line AA of FIG. FIG. 4 is a perspective view of the pen core, FIG. 4A is a view seen from the pen body side, and FIG. 4B is a view seen from the opposite side.

本実施例の万年筆１は、軸筒２を、首部材３と軸筒本体４と尾冠５とで構成し、首部材３に形成した前方開口部３ａに、ペン体６と、該ペン体６を上側面に隣設させたペン芯７とを挿着してある。首部材３の後部には、外筒部３ｂと内筒部３ｃとを突設しており、内筒部３ｃの内方にはペン芯７の後部が挿着され、外筒部３ｂと内筒部３ｃとの隙間３ｄには、インキ吸入機構８の前端部８ａを挿着してある。 The fountain pen 1 of the present embodiment comprises a barrel 2 composed of a neck member 3, a barrel body 4 and a crown 5, and a pen body 6 and a pen body 6 in a front opening 3a formed in the neck member 3. A pen core 7 having an upper surface 6 adjacent thereto is inserted. An outer cylinder portion 3b and an inner cylinder portion 3c are provided on the rear portion of the neck member 3 so that the rear portion of the pen core 7 is inserted inside the inner cylinder portion 3c, and the outer cylinder portion 3b and the inner cylinder portion 3b are inserted. The front end portion 8a of the ink suction mechanism 8 is inserted into the gap 3d with the cylindrical portion 3c.

インキ吸入機構８は、インキ収容筒８１と、インキ収容筒８１の内方に形成したインキタンク８１ａの内面に摺動する弁体８２と、弁体８２に形成した後部開口８２ａに嵌着させた押棒８３と、押棒８３の外面に形成した雄螺子部８３ａに螺合する雌螺子部８４ａを形成した回転操作部８４と、インキ収容筒８１の後部に嵌着され回転操作部８４の前方に形成した大径部８４ｂを抜け止め状態で保持する保持筒８５と、保持筒８５の内段８５ａとインキ収容筒８１の後端で挟持された円環状のパッキン８６と、を有している。 The ink suction mechanism 8 is fitted into the ink containing cylinder 81, the valve body 82 that slides on the inner surface of the ink tank 81a formed inside the ink containing cylinder 81, and the rear opening 82a formed in the valve body 82. A push rod 83, a rotary operation portion 84 having a female screw portion 84a that engages with a male screw portion 83a formed on the outer surface of the push rod 83, and a rotation operation portion 84 that is fitted to the rear portion of the ink containing cylinder 81 and is formed in front of the rotation operation portion 84. The holding cylinder 85 holds the large diameter portion 84b in a retaining state, and the annular packing 86 sandwiched between the inner stage 85a of the holding cylinder 85 and the rear end of the ink containing cylinder 81.

ペン芯７は、前記ペン体６を隣接させる上面側に、ペン芯７の前後方向へ延びるインキ溝７ａを形成してあり、空気溝７ｂをペン芯７の前端面７ｃから後端面７ｄに渡って形成してある。空気溝７ｂは、ペン芯７の前方に形成した前方溝７１ｂと、ペン芯７の中間部の下面側に形成した中間溝７２ｂと、ペン芯７の側面に形成した連絡溝７３ｂと、ペン芯７の後方にインキ溝７ａと一体で形成した後方溝７４ｂと、を有している。
前方溝７１ｂは中間溝７２ｂに連通し、中間溝７２ｂは連絡溝７３ｄに連通し、連絡溝７３ｂは後方溝７４ｂに連通しており、インキタンク８１ａ内のインキ減少に伴い、空気溝７ｂを通して空気をインキタンク８１ａ内へ取り込むことができる構造としてある。 The pen core 7 has an ink groove 7a extending in the front-back direction of the pen core 7 on the upper surface side adjacent to the pen body 6, and the air groove 7b extends from the front end surface 7c of the pen core 7 to the rear end surface 7d. Is formed. The air groove 7b includes a front groove 71b formed in front of the pen core 7, an intermediate groove 72b formed on a lower surface side of an intermediate portion of the pen core 7, a connecting groove 73b formed on a side surface of the pen core 7, and a pen core. 7 has a rear groove 74b formed integrally with the ink groove 7a.
The front groove 71b communicates with the intermediate groove 72b, the intermediate groove 72b communicates with the communication groove 73d, the communication groove 73b communicates with the rear groove 74b, and as the ink in the ink tank 81a decreases, air is discharged through the air groove 7b. Is designed to be taken into the ink tank 81a.

また、ペン芯７は、中間部のペン体６と隣設させる上面を除いた全周に突条７ｅを形成してあり、ペン体６及びペン芯７を首部材３の前方開口部３ａに挿着した際に、ペン体６の上側面が首部材３の内周面３ｅに密着し、ペン芯７の突条７ｅが圧縮変形されて首部材３の内周面３ｅに密着し、結果、インキ溝７ａと空気溝７ｂとを除き、インキタンク８１ａと外部とを流通できる経路が存在しなくなる。 Further, the pen core 7 has a ridge 7e formed on the entire circumference except for the upper surface adjacent to the pen body 6 in the middle part, and the pen body 6 and the pen core 7 are attached to the front opening 3a of the neck member 3. When inserted, the upper side surface of the pen body 6 comes into close contact with the inner peripheral surface 3e of the neck member 3, and the ridges 7e of the pen core 7 are compressed and deformed and come into close contact with the inner peripheral surface 3e of the neck member 3. Except for the ink groove 7a and the air groove 7b, there is no path through which the ink tank 81a and the outside can flow.

本実施例のペン芯７は、その中間部に、前記インキ溝７ａと空気溝７ｂとを連結する連結溝７５ｂを設けてある。連結溝７５ｂは、首部材３の前方開口部３ａの中でインキ溝７ａと空気溝７ｂとに隣接している。また、連結溝７５ｂの毛管力は、連結溝７５ｂに隣設した部分の空気溝７ｂより大きく、連結溝７５ｂに隣接した部分のインキ溝７０ａより小さくなるよう形成してある。 The pen core 7 of this embodiment is provided with a connecting groove 75b for connecting the ink groove 7a and the air groove 7b in the middle thereof. The connecting groove 75b is adjacent to the ink groove 7a and the air groove 7b in the front opening 3a of the neck member 3. Further, the capillary force of the connecting groove 75b is formed so as to be larger than that of the air groove 7b in the portion adjacent to the connecting groove 75b and smaller than that of the ink groove 70a in the portion adjacent to the connecting groove 75b.

次に、図５と図６を用いて、ペン芯の射出成形に関する製造方法について説明を行う。
図５は、ペン芯を射出成形している第一状態の断面斜視図で、図５Ａはペン体側から見た図で、図５Ｂはその反対側から見た図である。図６は、ペン芯を射出成形している第二状態の断面斜視図で、図６Ａはペン体側から見た図で、図６Ｂはその反対側から見た図である。図５では、ペン芯７の空気溝７ｂの箇所にコアピン１０１が配置され、ペン芯７のインキ溝７ａの箇所に平板形状の上側キャビティ１０２が配置され、ペン芯７の連結溝７５ｂの箇所に下側キャビティ１０３が配置された状態である。実際には、その他の射出成形金型（図示せず）が、ペン芯７の周りを取り囲むように配置された状態で、射出成形用の樹脂が各金型間に流れ込むことによって、ペン芯７が形成される。
この際、前方溝７１ｂに配置されている細いコアピン１０１の端部１０１ａは、その上部に上側キャビティ１０２の連結溝７５ｂの位置に該当する突部１０２ａが当接し、その下部に下側キャビティ１０３の突起部１０３ａが当接して、コアピン１０１の芯ブレが防止され、コアピン１０１の破損を防止できる。
本実施例では、空気溝７ｂにおけるペン芯７の連結溝７５ｂに隣設した前方溝７１ｂに、ペン芯７の外方へ開放する開放部７１を設けており、前記下側キャビティ１０３の突起部１０３ａは、この開放部７１を通過して、ペン芯７の端部１０１ａの下部に下側キャビティ１０３の突起部１０３ａが当接するようにしてある。図６は、図５の状態で成形されたペン芯７からコアピン１０１，上側キャビティ１０２，下側キャビティ１０３が離間していく状態を示している。このように製造されたペン芯７の前方溝７１ｂは、精度よく成形されることから、インキ吸入時におけるインキの吸入を効率的に行えると共に、空気溝７ｂの前方部７１ｂに残ったインキを安定して保持することができる。 Next, a manufacturing method relating to injection molding of the pen core will be described with reference to FIGS. 5 and 6.
5 is a sectional perspective view of a first state in which the pen core is injection molded, FIG. 5A is a view seen from the pen body side, and FIG. 5B is a view seen from the opposite side. FIG. 6 is a cross-sectional perspective view of a second state in which the pen core is injection molded, FIG. 6A is a view seen from the pen body side, and FIG. 6B is a view seen from the opposite side. In FIG. 5, the core pin 101 is arranged in the air groove 7b of the pen core 7, the flat upper cavity 102 is arranged in the ink groove 7a of the pen core 7, and the connecting groove 75b of the pen core 7 is arranged. The lower cavity 103 is arranged. In practice, other injection molding dies (not shown) are arranged so as to surround the pen core 7, and the resin for injection molding flows between the dies to thereby make the pen core 7 Is formed.
At this time, the end portion 101a of the thin core pin 101 arranged in the front groove 71b is in contact with the protrusion 102a corresponding to the position of the connecting groove 75b of the upper cavity 102 at the upper portion thereof, and the lower portion of the lower cavity 103 at the lower portion thereof. The protrusion 103a comes into contact with the core pin 101 to prevent the core pin 101 from moving, and the core pin 101 can be prevented from being damaged.
In this embodiment, the front groove 71b adjacent to the connecting groove 75b of the pen core 7 in the air groove 7b is provided with the opening portion 71 that is open to the outside of the pen core 7, and the protruding portion of the lower cavity 103 is provided. The protrusion 103a of the lower cavity 103 abuts the lower portion of the end 101a of the pen core 7 through the opening 71. FIG. 6 shows a state in which the core pin 101, the upper cavity 102, and the lower cavity 103 are separated from the pen core 7 molded in the state of FIG. Since the front groove 71b of the pen core 7 manufactured as described above is molded with high precision, the ink can be efficiently sucked when the ink is sucked, and the ink remaining in the front portion 71b of the air groove 7b is stabilized. Can be held.

次に、図７と図８を用いて、インキタンク内にインキを吸入する吸入操作について説明を行う。図７は、インキ瓶よりインキを吸入する状態を示す図である。図８は、インキ瓶よりインキを吸入した状態を示す図である。
図に示すように、首部材３から軸筒本体４（図１参照）を取り外すことで、インキ吸入機構８の回転操作部８４が操作できる状態となり、回転操作部８４を回転することで弁体８２を前進させた状態にして、ペン体６及びペン芯７をインキ瓶２００のインキ３００中に浸け、回転操作部８４を逆回転することで弁体８２を後退させてインキタンク８１ａ内を負圧にし、ペン芯７を通してインキ瓶２００内のインキ３００をインキタンク８１ａ内に吸入することができる。 Next, a suction operation for sucking ink into the ink tank will be described with reference to FIGS. 7 and 8. FIG. 7 is a diagram showing a state where ink is sucked from the ink bottle. FIG. 8 is a diagram showing a state where ink is sucked from the ink bottle.
As shown in the figure, by removing the barrel body 4 (see FIG. 1) from the neck member 3, the rotation operating portion 84 of the ink suction mechanism 8 can be operated, and by rotating the rotation operating portion 84, the valve body is rotated. In a state where 82 is advanced, the pen body 6 and the pen core 7 are dipped in the ink 300 of the ink bottle 200, and the rotation operation portion 84 is reversely rotated to retract the valve body 82 and set the inside of the ink tank 81a negative. The ink can be sucked into the ink tank 81a from the ink bottle 200 through the pen core 7 under pressure.

次に、図９と図１０を用いて、本実施例の万年筆で筆記を行う状態について説明を行う。図９は、インキを吸入した状態の要部拡大図である。図１０は、筆記を行っている状態の要部拡大図である。図９に示す万年筆１は、インキ瓶からインキを吸入した後に上方へ万年筆１を持ち上げた状態の断面を示しており、ペン体６が下方に向いた状態である。
この状態で、ペン芯２内のインキ３００は、インキ溝７ａにインキ３００ａが、連結溝７５ｂにインキ３００ｂが、空気溝７ｂの前方部にインキ３００ｃが入っており、空気溝７ｂの前方部７１ｂに残ったインキ３００ｃは、前端面７ｃ付近で働く表面張力により、空気溝７ｂ上方へ向かって引っ張り上げられ、開口７ｃから落下しないように設定してある。 Next, the state of writing with the fountain pen of this embodiment will be described with reference to FIGS. 9 and 10. FIG. 9 is an enlarged view of a main part in a state where ink is sucked. FIG. 10 is an enlarged view of a main part in a state where writing is performed. The fountain pen 1 shown in FIG. 9 shows a cross section in a state where the fountain pen 1 is lifted up after inhaling ink from the ink bottle, and the pen body 6 is directed downward.
In this state, the ink 300 in the pen core 2 has the ink 300a in the ink groove 7a, the ink 300b in the connecting groove 75b, the ink 300c in the front part of the air groove 7b, and the front part 71b of the air groove 7b. The remaining ink 300c is set so as not to fall from the opening 7c by being pulled up by the air groove 7b due to the surface tension acting near the front end surface 7c.

図９の状態の万年筆で、筆記を開始すると、図１０に示すように、空気溝７ｂの前方溝７１ｂに入っているインキ３００ｃが、連結溝７５ｂに隣設した部分の空気溝７０ｂから毛管力が強い連結溝７５ｂへ移動し、次いで連結溝７５ｂに入っているインキ３００ｂが、連結溝７５ｂの毛管力より強い毛管力の連結溝７５ｂに隣接した部分のインキ溝７０ａへ移動して、ペン体６のペン先６ａで筆記を行うことができるようになり、空気溝７ｂの前方溝７１ｂに残っていたインキ３００ｃを、書き始めの方で消費することができ、衝撃でペン芯から落下して紙面を汚すことを防止することができた。 When writing is started with the fountain pen in the state of FIG. 9, as shown in FIG. 10, the ink 300c contained in the front groove 71b of the air groove 7b moves from the air groove 70b of the portion adjacent to the connecting groove 75b to the capillary force. Moves to the strong connecting groove 75b, and then the ink 300b contained in the connecting groove 75b moves to the ink groove 70a in a portion adjacent to the connecting groove 75b having a stronger capillary force than that of the connecting groove 75b. It becomes possible to write with the pen tip 6a of No. 6, and the ink 300c remaining in the front groove 71b of the air groove 7b can be consumed at the beginning of writing, and falls from the pen core due to impact. It was possible to prevent the paper surface from being soiled.

１…万年筆、２…軸筒、
３…首部材、
３ａ…前方開口部、３ｂ…外筒部、３ｃ…内筒部、３ｄ…隙間、３ｅ…内周面、
４…軸筒本体、５…尾冠、
６…ペン体、
７…ペン芯、
７ａ…インキ溝、７ｂ…空気溝、７ｃ…前端面、７ｄ…後端面、７ｅ…突条、
７１…開放部、
７１ｂ…前方溝、７２ｂ…中間溝、７３ｂ…連絡溝、７４ｂ…後方溝、７５ｂ…連結溝、
７０ａ…連結溝に隣接した部分のインキ溝、
７０ｂ…連結溝に隣設した部分の空気溝、
８…インキ吸入機構、８ａ…前端部、
８１…インキ収容筒、８１ａ…インキタンク、
８２…弁体、８２ａ…後部開口、
８３…押棒、８３ａ…雄螺子部、
８４…回転操作部、８４ａ…雌螺子部、８４ｂ…大径部、
８５…保持筒、８５ａ…内段、
８６…パッキン、
１０１…コアピン、１０１ａ…端部、
１０２…上側キャビティ、１０２ａ…突部、
１０３…下側キャビティ、１０３ａ…突起部、
２００…インキ瓶、３００…インキ。 1... fountain pen, 2... barrel,
3... neck member,
3a... front opening, 3b... outer cylinder, 3c... inner cylinder, 3d... gap, 3e... inner peripheral surface,
4... Shaft barrel body, 5... Crown,
6...pen body
7...Pen lead,
7a... ink groove, 7b... air groove, 7c... front end surface, 7d... rear end surface, 7e... ridge,
71... open part,
71b... front groove, 72b... intermediate groove, 73b... connecting groove, 74b... rear groove, 75b... connecting groove,
70a... Ink groove adjacent to the connecting groove,
70b... an air groove adjacent to the connecting groove,
8... Ink suction mechanism, 8a... Front end portion,
81... Ink storage cylinder, 81a... Ink tank,
82... valve body, 82a... rear opening,
83... push rod, 83a... male screw part,
84... Rotating operation part, 84a... Female screw part, 84b... Large diameter part,
85... holding cylinder, 85a... inner stage,
86... packing,
101... core pin, 101a... end portion,
102... Upper cavity, 102a... Projection,
103... Lower cavity, 103a... Protrusion,
200... Ink bottle, 300... Ink.

Claims (1)

インキ溝が上側面に形成され空気溝が前方から後方に渡って形成されたペン芯と、該ペン芯の上側面に隣設されるペン体とを、軸筒の前方開口部に挿着した万年筆であって、前記ペン芯の中間部に前記インキ溝と前記空気溝とを連結する連結溝が形成され、前記連結溝の毛管力が、該連結溝に隣設した部分の空気溝より大きく、該連結溝に隣接した部分のインキ溝より小さい構造の万年筆。 A pen core having an ink groove formed on the upper side surface and an air groove extending from the front side to the rear side, and a pen body adjacent to the upper side surface of the pen core were inserted into the front opening of the barrel. A fountain pen, in which a connecting groove for connecting the ink groove and the air groove is formed in an intermediate portion of the pen core, and a capillary force of the connecting groove is larger than that of an air groove adjacent to the connecting groove. , A fountain pen with a structure smaller than the ink groove in the portion adjacent to the connecting groove.
JP2016229145A 2016-11-25 2016-11-25 fountain pen Active JP6716438B2 (en)

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