JP5694736B2 - Ballpoint pen - Google Patents

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JP5694736B2
JP5694736B2 JP2010242827A JP2010242827A JP5694736B2 JP 5694736 B2 JP5694736 B2 JP 5694736B2 JP 2010242827 A JP2010242827 A JP 2010242827A JP 2010242827 A JP2010242827 A JP 2010242827A JP 5694736 B2 JP5694736 B2 JP 5694736B2
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ball
ballpoint pen
support member
projectile
pen tip
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JP2012091467A (en
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栗田　哲宏
哲宏 栗田
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Pilot Ink Co Ltd
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Pilot Ink Co Ltd
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Description

本発明は、ボールペンに関する。 The present invention also relates to a ballpoint pen.

従来、この種のボールペンにおいて、例えば、特許文献１には、チップ本体の先端内部に転写ボールを回転可能に抱持させ、該転写ボールをスプリングにて前方に付勢せしめて内向き先端縁に接触させてなる筆記具用チップに於いて、チップ本体の後端内部に、液導入孔を有する流量調節部材を配設し、該流量調節部材にスプリングの後端を衝合係止せしめてなる筆記具用チップが開示されている。 Conventionally, in this type of ballpoint pen, for example, in Patent Document 1, a transfer ball is rotatably held inside the tip end of a chip body, and the transfer ball is urged forward by a spring to an inward tip edge. In the writing tool tip to be contacted, a writing instrument comprising a flow rate adjusting member having a liquid introduction hole disposed in the rear end of the tip body, and the rear end of the spring being abutted and locked to the flow rate adjusting member. A chip is disclosed.

特開平１０−３２９４７６号公報Japanese Patent Laid-Open No. 10-329476

前記従来のボールペンは、流量調節部材の寸法ばらつきや流量調節部材の組立ばらつきによって、流量調節部材の前端の位置がばらつき、その結果、スプリングの弾発力が大きくばらつくおそれがある。もし、スプリングの弾発力が過剰に大きくなると、筆記感が損なわれるおそれがある。また、もし、スプリングの弾発力が過剰に小さくなると、ボールと先端縁との密接が不十分になり、チップの先端からインキ漏出や空気浸入が生じたりするおそれがある。 In the conventional ballpoint pen, the position of the front end of the flow rate adjusting member varies due to variations in the dimensions of the flow rate adjusting member and assembly of the flow rate adjusting member, and as a result, the spring resilience may vary greatly. If the spring resilience is excessively large, the writing feeling may be impaired. Also, if the spring's resilience becomes excessively small, the ball and the tip edge will not be in close contact with each other, and ink leakage or air intrusion may occur from the tip of the tip.

本発明は前記従来の問題点を解決するものであって、ボールを前方に付勢する弾発体の弾発力をばらつきのない適正な値に設定できるボールペンを提供しようとするものである。 The present invention has been made to solve the conventional problems, it is intended to provide a ballpoint pen which can be set to a proper value without variations the elastic force of the elastic member for urging the ball forward .

本願発明は、前端縁部２２とその後方のボール受け座２３とにより前端にボール２１を回転可能に抱持したボールペンチップ２と、前記ボール２１を前方に付勢し且つ前記ボール２１を前端縁部２２の内面に密接させる弾発体３と、前記弾発体３の後端を支持する弾発体支持部材４と、前記ボールペンチップ２の後端部が取り付けられるインキ収容筒５とを備えたボールペンであって、前記インキ収容筒５の前端開口部に、前記ボールペンチップ２と前記弾発体支持部材４とを圧入し、前記ボールペンチップ２の後端と前記弾発体支持部材４の前端とを前後に当接させ、前記弾発体支持部材４が、内部に前後方向にインキ通孔４１が貫設された筒状体からなり、前記弾発体支持部材４の前端に、径方向に貫通する溝４２を形成したことを要件とする。 The present application onset bright, front and front edge 22 and its rear the ball seat 23 and ball-point pen tip 2 was holding rotatably a ball 21 at the front end, the said balls 21 was urged forward and the ball 21 A projectile 3 that is brought into close contact with the inner surface of the edge 22, a projectile support member 4 that supports the rear end of the projectile 3, and an ink storage cylinder 5 to which the rear end of the ballpoint pen tip 2 is attached. A ballpoint pen provided, wherein the ballpoint pen tip 2 and the projectile support member 4 are press-fitted into a front end opening of the ink containing cylinder 5, and the rear end of the ballpoint pen tip 2 and the projectile support member 4 And the front end of the projectile support member 4 is formed of a cylindrical body having an ink through hole 41 penetrating in the front-rear direction. requirement that a groove 42 penetrating in the radial direction To.

前記本願発明のボールペン１は、インキ収容筒５の前端開口部に、前記ボールペンチップ２と前記弾発体支持部材４とを圧入し、前記ボールペンチップ２の後端と前記弾発体支持部材４の前端とを前後に当接させたことにより、弾発体支持部材４の寸法ばらつきや組立ばらつきが生じたとしても、弾発体支持部材４の前端をボールペンチップ２の後端に常に位置させることができる。その結果、弾発体３の弾発力をばらつきのない適正な値に設定できる。 Before SL application onset Ming ballpoint pen 1, the front end opening of the ink reservoir tube 5, press-fitted with the bullet inducer supporting member 4 and the ballpoint pen tip 2, the bullet inducer supporting a rear end of the ballpoint pen tip 2 Even if dimensional variation or assembly variation of the projectile support member 4 is caused by contacting the front end of the member 4 back and forth, the front end of the projectile support member 4 is always set to the rear end of the ballpoint pen tip 2. Can be positioned. As a result, the resilience of the projectile 3 can be set to an appropriate value without variation.

前記本願発明のボールペン１は、前記弾発体支持部材４が、内部に前後方向にインキ通孔４１が貫設された筒状体からなり、前記弾発体支持部材４の前端に、径方向に貫通する溝４２を形成したことにより、インキ充填後のインキ内の内部の気泡を除去する遠心脱泡処理の際、気泡が弾発体３の後端部に残留することを回避できる。 Ball Rupen 1 before Symbol present invention, the bullet inducer supporting member 4 is made from the ink hole 41 is penetrated by a cylindrical member in the longitudinal direction therein, the front end of the bullet inducer supporting member 4, By forming the groove 42 penetrating in the radial direction, it is possible to avoid bubbles remaining at the rear end portion of the projectile 3 in the centrifugal defoaming process for removing bubbles in the ink after ink filling. .

本発明のボールペンは、弾発体支持部材の寸法ばらつきや組立ばらつきが生じたとしても、弾発体支持部材の前端をボールペンチップの後端に常に位置させることができ、弾発体の弾発力をばらつきのない適正な値に設定できる。 The ballpoint pen of the present invention can always position the front end of the bullet support member at the rear end of the ballpoint pen tip even if the size variation and assembly variation of the projectile support member occur. The force can be set to an appropriate value without variation.

本発明の実施の形態のボールペンの縦断面図である。It is a longitudinal cross-sectional view of the ball-point pen of embodiment of this invention. 図１のＡ−Ａ線拡大断面図である。It is an AA line expanded sectional view of FIG. 図１のボールペンの組立方法を示す縦断面図である。It is a longitudinal cross-sectional view which shows the assembly method of the ball-point pen of FIG.

図１乃至図３に本発明の実施の形態を示す。
本実施の形態のボールペン１は、ボールペンチップ２と、該ボールペンチップ２の後端部が圧入されるインキ収容筒５と、前記ボールペンチップ２内に収容され且つ前記ボールペンチップ２前端のボール２１を前方に付勢する弾発体３と、前記弾発体３の後端が当接され且つ前記インキ収容筒５に圧入される弾発体支持部材４とからなる。 1 to 3 show an embodiment of the present invention.
The ball-point pen 1 of the present embodiment includes a ball-point pen tip 2, an ink storage cylinder 5 into which the rear end portion of the ball-point pen tip 2 is press-fitted, and a ball 21 that is received in the ball-point pen tip 2 and at the front end of the ball-point pen tip 2. It consists of a bullet member 3 that urges forward, and a bullet support member 4 that is brought into contact with the rear end of the bullet member 3 and press-fitted into the ink containing cylinder 5.

前記インキ収容筒５内には、インキ５１（例えば水性ゲルインキ）と、該インキの消費に伴い前進する追従体５２（例えば高粘度流体）とが収容される。 An ink 51 (for example, water-based gel ink) and a follower 52 (for example, a high-viscosity fluid) that moves forward as the ink is consumed are stored in the ink storage cylinder 5.

前記ボールペンチップ２は、前端にボール２１を回転可能に抱持した金属製（例えばステンレス鋼製）の筒体からなる。前記ボールペンチップ２の内部には、切削加工により、前端部にボール抱持孔とボール受け座２３が形成され、その後方にインキ流通孔が形成される。前記ボール受け座２３が、軸方向に貫通する中心孔と、該中心孔に連通し且つ軸方向に貫通しない複数のインキ流通溝を備える。前記インキ流通溝は中心孔より放射状に形成される。 The ball-point pen tip 2 is made of a metal (for example, stainless steel) cylinder having a ball 21 rotatably held at its front end. Inside the ball-point pen tip 2, a ball holding hole and a ball receiving seat 23 are formed at the front end by cutting, and an ink circulation hole is formed behind the hole. The ball receiving seat 23 includes a central hole penetrating in the axial direction and a plurality of ink circulation grooves communicating with the central hole and not penetrating in the axial direction. The ink circulation grooves are formed radially from the center hole.

前記ボールペンチップ２の前端には、内方への押圧変形（カシメ変形）により内向きの前端縁部２２が形成される。前記前端縁部２２とボール受け座２３とによって、ボール抱持孔内においてボール２１が回転可能且つ前後に移動可能に抱持される。前記インキ流通孔の前端部内面には、複数の傾斜状内面が形成される。前記インキ流通孔に弾発体３が収容される。 An inward front edge 22 is formed at the front end of the ball-point pen tip 2 by inward pressing deformation (caulking deformation). The front edge 22 and the ball seat 23 hold the ball 21 in the ball holding hole so as to be rotatable and movable back and forth. A plurality of inclined inner surfaces are formed on the inner surface of the front end portion of the ink circulation hole. The elastic body 3 is accommodated in the ink circulation hole.

前記弾発体３は、前部のロッド部３１と、後部のコイル部３２とが一体に連設されてなる。前記弾発体３は、ステンレス鋼製線材により形成される。前記弾発体３のコイル部３２の後端部は、隣接する線材同士が密接する密着巻部３２ａが形成される。 The bullet body 3 is formed by integrally connecting a front rod portion 31 and a rear coil portion 32. The bullet body 3 is formed of a stainless steel wire. The rear end portion of the coil portion 32 of the elastic body 3 is formed with a tightly wound portion 32a in which adjacent wires are in close contact with each other.

前記弾発体３は、ボールペンチップ２内部に後端開口部より挿入される。前記弾発体３のロッド部３１が、前記ボール受け座２３の中心孔に適正に挿入され、前記ロッド部３１の前端が、ボール２１背面に当接し、ボール２１を前方に付勢する。 The bullet body 3 is inserted into the ballpoint pen tip 2 from the rear end opening. The rod portion 31 of the bullet body 3 is properly inserted into the center hole of the ball receiving seat 23, and the front end of the rod portion 31 abuts on the back surface of the ball 21 to urge the ball 21 forward.

・弾発体支持部材
前記弾発体支持部材４は、内部に前後方向にインキ通孔４１が貫設された筒状体からなる。前記弾発体支持部材４の前端に、径方向に貫通する溝４２が形成される。前記弾発体支持部材４の後端部外面には傾斜面状のテーパ部４３が形成され、それにより、前記弾発体支持部材４をインキ収容筒５内に引っ掛かりのなくスムーズに圧入することができる。 -Bullet Support Member The bullet support member 4 is formed of a cylindrical body having ink through holes 41 penetrating in the front-rear direction. A groove 42 penetrating in the radial direction is formed at the front end of the projectile support member 4. An inclined tapered surface 43 is formed on the outer surface of the rear end portion of the bullet support member 4 so that the bullet support member 4 can be smoothly pressed into the ink containing cylinder 5 without being caught. Can do.

・組立方法
図３に本実施の形態のボールペンの製造方法（組立過程）を示す。
予め、ボールペンチップ２内には、弾発体３が仮挿入される。このとき、弾発体３の後端部（密着巻部３２ａの一部）がボールペンチップ２の後端より後方に突出される。一方、インキ収容筒５の前端開口部には、弾発体支持部材４が仮圧入される。このとき、弾発体支持部材４の前端がボールペンチップ２の前端より前方に突出される。 Assembly Method FIG. 3 shows a ballpoint pen manufacturing method (assembly process) according to this embodiment.
The bullet body 3 is temporarily inserted into the ballpoint pen tip 2 in advance. At this time, the rear end portion of the projectile body 3 (a part of the tightly wound portion 32 a) protrudes rearward from the rear end of the ballpoint pen tip 2. On the other hand, the projectile support member 4 is temporarily press-fitted into the front end opening of the ink containing cylinder 5. At this time, the front end of the projectile support member 4 projects forward from the front end of the ballpoint pen tip 2.

次に、前記状態（弾発体３が仮挿入状態、弾発体支持部材４を仮圧入状態）から、ボールペンチップ２の後端及び弾発体３の後端を、弾発体支持部材４の前端に当接させる。 Next, from the above state (the projectile 3 is temporarily inserted and the projectile support member 4 is temporarily press-fitted), the rear end of the ballpoint pen tip 2 and the rear end of the projectile 3 are connected to the projectile support member 4. It is made to contact with the front end.

そして、前記ボールペンチップ２の後端及び弾発体３の後端と、弾発体支持部材４の前端との当接状態を維持させながら、ボールペンチップ２の後端で弾発体支持部材４を後方に押圧し、ボールペンチップ２の後端部をインキ収容筒５の前端開口部に圧入する。それにより、弾発体支持部材４の前端に、ボールペンチップ２の後端及び弾発体３の後端が当接された図１に示すボールペンを得る。 Then, while maintaining the contact state between the rear end of the ball-point pen tip 2 and the rear end of the projectile 3 and the front end of the projectile support member 4, the projectile support member 4 at the rear end of the ball-point pen tip 2 is maintained. Is pushed backward, and the rear end portion of the ballpoint pen tip 2 is press-fitted into the front end opening portion of the ink containing cylinder 5. As a result, the ballpoint pen shown in FIG. 1 is obtained in which the rear end of the ballpoint pen tip 2 and the rear end of the bulletpoint 3 are brought into contact with the front end of the bullet support member 4.

本実施の形態のボールペン１は、インキ収容筒５の前端開口部に、前記ボールペンチップ２と前記弾発体支持部材４とを圧入し、前記ボールペンチップ２の後端と前記弾発体支持部材４の前端とを前後に当接させたことにより、弾発体支持部材４の寸法ばらつきや組立ばらつきが生じたとしても、弾発体支持部材４の前端をボールペンチップ２の後端に常に位置させることができる。その結果、弾発体３の弾発力をばらつきのない適正な値に設定できる。 In the ballpoint pen 1 of the present embodiment, the ballpoint pen tip 2 and the projectile support member 4 are press-fitted into the front end opening of the ink containing cylinder 5, and the rear end of the ballpoint pen tip 2 and the projectile support member The front end of the projectile support member 4 is always positioned at the rear end of the ball-point pen tip 2 even if the projectile support member 4 has dimensional variations or assembly variations. Can be made. As a result, the resilience of the projectile 3 can be set to an appropriate value without variation.

本実施の形態のボールペン１は、前記弾発体支持部材４が、内部に前後方向にインキ通孔４１が貫設された筒状体からなり、前記弾発体支持部材４の前端に、径方向に貫通する溝４２を形成したことにより、インキ充填後のインキ内の内部の気泡を除去する遠心脱泡処理の際、気泡が弾発体３の後端部に残留することを回避できる。 In the ballpoint pen 1 of the present embodiment, the bullet support member 4 is formed of a cylindrical body having ink through holes 41 penetrating in the front-rear direction, and a diameter is provided at the front end of the bullet support member 4. By forming the groove 42 penetrating in the direction, it is possible to avoid bubbles remaining at the rear end portion of the projectile 3 in the centrifugal defoaming process for removing the bubbles in the ink after ink filling.

本実施の形態のボールペンの製造方法は、前記ボールペンチップの後端及び前記弾発体３の後端を前記弾発体支持部材４の前端に当接させながら前記ボールペンチップ２の後端部を前記インキ収容筒５の前端開口部に圧入してなることにより、弾発体支持部材４の寸法ばらつきや組立ばらつきが生じたとしても、弾発体支持部材４の前端をボールペンチップ２の後端に常に位置させることができる。その結果、弾発体３の弾発力をばらつきのない適正な値に設定できる。 In the ballpoint pen manufacturing method of the present embodiment, the rear end portion of the ballpoint pen tip 2 is moved while the rear end portion of the ballpoint pen tip and the rear end portion of the bullet body 3 are brought into contact with the front end of the bullet body support member 4. Even if dimensional variation or assembly variation of the projectile support member 4 occurs due to press-fitting into the front end opening of the ink containing cylinder 5, the front end of the projectile support member 4 is used as the rear end of the ballpoint pen tip 2. Can always be located. As a result, the resilience of the projectile 3 can be set to an appropriate value without variation.

１ ボールペン
２ ボールペンチップ
２１ ボール
２２ 前端縁部
２３ ボール受け座
３ 弾発体
３１ ロッド部
３２ コイル部
３２ａ 密着巻部
４ 弾発体支持部材
４１ インキ通孔
４２ 溝
４３ テーパ部
５ インキ収容筒
５１ インキ
５２ 追従体
DESCRIPTION OF SYMBOLS 1 Ball-point pen 2 Ball-point pen tip 21 Ball 22 Front edge part 23 Ball receiving seat 3 Bullet 31 Rod part 32 Coil part 32a Contact winding part 4 Bullet support member 41 Ink passage hole 42 Groove 43 Taper part 5 Ink storage cylinder 51 Ink 52 Follower

Claims (1)

前端縁部とその後方のボール受け座とにより前端にボールを回転可能に抱持したボールペンチップと、前記ボールを前方に付勢し且つ前記ボールを前端縁部の内面に密接させる弾発体と、前記弾発体の後端を支持する弾発体支持部材と、前記ボールペンチップの後端部が取り付けられるインキ収容筒とを備えたボールペンであって、前記インキ収容筒の前端開口部に、前記ボールペンチップと前記弾発体支持部材とを圧入し、前記ボールペンチップの後端と前記弾発体支持部材の前端とを前後に当接させ、前記弾発体支持部材が、内部に前後方向にインキ通孔が貫設された筒状体からなり、前記弾発体支持部材の前端に、径方向に貫通する溝を形成したことを特徴とするボールペン。 A ballpoint pen tip that rotatably holds the ball at the front end by a front edge and a ball receiving seat behind the front edge, and a projectile that urges the ball forward and closely contacts the inner surface of the front edge A ballpoint pen comprising a projectile support member that supports the rear end of the projectile and an ink storage cylinder to which the rear end of the ballpoint pen tip is attached, and at the front end opening of the ink storage cylinder, The ball-point pen tip and the projectile support member are press-fitted, and a rear end of the ball-point pen tip and a front end of the projectile support member are brought into contact with each other in the front-rear direction. A ballpoint pen comprising: a cylindrical body having ink through holes formed therein, and a groove penetrating in a radial direction formed at a front end of the elastic body supporting member .
JP2010242827A 2010-10-28 2010-10-28 Ballpoint pen Active JP5694736B2 (en)

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JP5694736B2 true JP5694736B2 (en) 2015-04-01

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JP2524572B2 (en) * 1992-07-03 1996-08-14 セーラー万年筆株式会社 Method for manufacturing applicator
JPH067984U (en) * 1992-07-09 1994-02-01 セーラー万年筆株式会社 Applicator
JP3197422B2 (en) * 1994-02-28 2001-08-13 三菱鉛筆株式会社 Ballpoint pen
JP4064689B2 (en) * 2002-02-28 2008-03-19 パイロットインキ株式会社 Ballpoint pen and ballpoint pen manufacturing method
JP2004351841A (en) * 2003-05-30 2004-12-16 Pentel Corp Ball-point pen

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