JP2003251986A - Ball-point pen - Google Patents
Ball-point penInfo
- Publication number
- JP2003251986A JP2003251986A JP2002052923A JP2002052923A JP2003251986A JP 2003251986 A JP2003251986 A JP 2003251986A JP 2002052923 A JP2002052923 A JP 2002052923A JP 2002052923 A JP2002052923 A JP 2002052923A JP 2003251986 A JP2003251986 A JP 2003251986A
- Authority
- JP
- Japan
- Prior art keywords
- shaft
- ball
- point pen
- refill
- rear end
- 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
Links
Landscapes
- Pens And Brushes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、ボールペンレフィ
ールを軸筒内でがたつかないように収納してなるボール
ペンに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ballpoint pen in which a ballpoint pen refill is housed in a barrel so as not to rattle.
【０００２】[0002]
【従来の技術】従来、筆記時における軸筒内に収納した
ボールペンレフィールのがたつきを抑えるために、ボー
ルペンレフィールの後端部を軸筒の後端部、例えば尾栓
等に圧入保持して収納してなるボールペンは知られてい
る。2. Description of the Related Art Conventionally, in order to prevent rattling of a ballpoint pen refill stored in a barrel during writing, the rear end of the ballpoint pen refill is press-fitted and held in the rear end of the barrel, such as a tail plug. A ball-point pen that can be stored is known.
【０００３】[0003]
【発明が解決しようとする課題】しかし、こうした構造
においては、ボールペンレフィールの後端部を圧入保持
しているので、軸筒やボールペンレフィールの寸法を厳
密に設定しなければならく、寸法管理の問題から製造コ
スト高となる問題がある。However, in such a structure, since the rear end portion of the ballpoint pen refill is press-fitted and held, it is necessary to strictly set the dimensions of the barrel and the ballpoint pen refill. There is a problem that the manufacturing cost becomes high due to the problem.
【０００４】本発明はこうした問題に鑑み、寸法を厳密
に設定することなく、ボールペンレフィールを軸筒内で
がたつくことなく収納したボールペンを提供することに
ある。In view of these problems, the present invention is to provide a ballpoint pen in which the ballpoint pen refill is housed without rattling in the barrel without strictly setting the dimensions.
【０００５】[0005]
【課題を解決するための手段】本発明は、前記問題を解
決するために、少なくとも２つ以上の軸体が連設するこ
とにより構成され、一方の軸体の一端部が他方の軸体内
に挿入してなる軸筒内に、インキ収容管に筆記具用イン
キを充填したボールペンレフィールを、該ボールペンレ
フィールの後端部を軸筒の後端部の軸体に当接して収納
してなるボールペンにおいて、前記一方の軸体の一端部
に、端部が開口した切り割り部を形成するとともに、一
端部の少なくとも切り割り部を形成した軸体部分の外径
を対向した他方の軸体の内径より大径に形成し、前記一
方の軸体の一端部が対向した他方の軸体の内壁に衝接す
ることにより一端部が縮径し、一端部を前記ボールペン
レフィールのインキ収容管の外周面に当接させて収納す
るものである。In order to solve the above-mentioned problems, the present invention is constituted by connecting at least two shaft bodies in series, and one end portion of one shaft body is inside the other shaft body. A ball-point pen in which a ball-point pen refill in which an ink containing tube is filled with ink for a writing instrument is housed in an inserted shaft cylinder by abutting a rear end portion of the ball-point pen refill to a shaft body at a rear end portion of the shaft cylinder. , One end of the one shaft body is formed with a slit portion having an open end portion, and at least the one end portion of the shaft body portion at least having the slit portion has an outer diameter larger than an inner diameter of the other shaft body facing each other. And one end of the one shaft is abutted against the inner wall of the other shaft opposite to the one end, so that the one end is reduced in diameter and the one end is brought into contact with the outer peripheral surface of the ink containing tube of the ballpoint pen refill. To be stored.
【０００６】さらには、前記一方の軸体の一端部の内壁
に、一端部のの内径が拡径する段部又は前記切り割り部
を形成した一方の軸体の一端部の外壁に、一端部の外径
が縮径する段部を設けるものである。Further, a step portion whose inner diameter at one end is enlarged or the slit portion is formed on the inner wall of the one end portion of the one shaft body. A step portion whose outer diameter is reduced is provided.
【０００７】さらには、前記一方の軸体の一端部の内壁
が、前記ボールペンレフィールのインキ収容管と面接触
するものである。Furthermore, the inner wall of one end of the one shaft body is in surface contact with the ink containing tube of the ballpoint pen refill.
【０００８】さらには、前記一方の軸体の一端部の内壁
が、前記ボールペンレフィールのインキ収容管と軸心方
向で異なる２個所以上で当接するものである。Further, the inner wall of one end of the one shaft member abuts on the ink storage tube of the ballpoint pen refill at two or more positions different in the axial direction.
【０００９】本発明における軸体とは、一般的に軸筒と
呼ばれている前軸や後軸であり、さらには前軸の先端に
装着される先すぼみ形状の口先部材や、後軸の後端に装
着される尾栓、さらには前軸や後軸を連結する接続筒等
のことで、筆記具の軸筒を構成する部材のことである。The shaft body in the present invention is a front shaft or a rear shaft generally called a shaft cylinder, and further, a tip recessed tip member attached to the tip of the front shaft or a rear shaft. A tail plug attached to the rear end, and a connecting tube for connecting the front shaft and the rear shaft, and the like, are members that form the shaft cylinder of the writing instrument.
【００１０】本発明は、一方の軸体の一端部を前記ボー
ルペンレフィールのインキ収容管の外周面に当接させる
ことで、ボールペンレフィールの軸筒内における径方向
のがたつきを抑える。According to the present invention, one end of one shaft member is brought into contact with the outer peripheral surface of the ink containing tube of the ballpoint pen refill to suppress radial rattling of the ballpoint pen refill in the barrel.
【００１１】[0011]
【発明の実施の形態】本発明の実施の形態を図面を用い
て説明する。図面中、同一部材および同一箇所を示すも
のは同一符号を付してある。図１から図４に示す、第１
の実施の形態のボールペン１は、軸筒が、前軸（軸体）
２と後軸（軸体）３とがねじ嵌合１２により連接し、前
軸２の先端に先すぼみ形状の口先部材４をねじ嵌合１０
により設けた構造である。後軸３の後端は有底部３ｃと
してある。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described with reference to the drawings. In the drawings, the same reference numerals are given to the same members and the same parts. 1 to 4 shown in FIG.
In the ball-point pen 1 according to the embodiment of the present invention, the barrel is a front shaft (shaft body).
2 and the rear shaft (shaft body) 3 are connected to each other by a screw fitting 12, and a tip-shaped tip member 4 of the front shaft 2 is screw-fitted to the tip of the front shaft 2.
It is the structure provided by. The rear end of the rear shaft 3 is a bottomed portion 3c.
【００１２】後軸（軸体）３の先端部３ａの内壁には、
雌ねじ部１２ｂを形成してある。前軸２の後軸３内に位
置する後端部２ｂには、後端に開口した切り割り部１１
を対向して形成してある。この切り割り部１１より先端
開口部２ａ側の前方の後端部２ｂの外側面には、前記後
軸３の雌ねじ部１２ｂに対応した雄ねじ部１２ａを形成
してある。図４に示すように、前軸２の後端部２ｂの外
径寸法Ｋは、後軸３の内径寸法Ｌより大径に設定（Ｋ＞
Ｌ）してある。On the inner wall of the tip portion 3a of the rear shaft (shaft body) 3,
A female screw portion 12b is formed. The rear end portion 2b located in the rear shaft 3 of the front shaft 2 has a slit 11 formed at the rear end.
Are formed to face each other. A male screw portion 12a corresponding to the female screw portion 12b of the rear shaft 3 is formed on the outer surface of the front rear end portion 2b on the front end opening 2a side of the slit portion 11. As shown in FIG. 4, the outer diameter K of the rear end portion 2b of the front shaft 2 is set to be larger than the inner diameter L of the rear shaft 3 (K>
L) Yes.
【００１３】ボールペンレフィール５は、インキ収容管
６内に剪断減粘性を付与したインキ及びグリース状のイ
ンキ追従体（図示せず）を収容し、インキ収容管６の先
端部にチップホルダー７及びボール（図示せず）を回転
自在に抱持したボールペンチップ８を順次装着してあ
る。また、ボールペンレフィール５のインキ収容管６の
後端部には、空気流路（図示せず）を有するレフィール
尾栓９を装着してある。The ball-point pen refill 5 accommodates ink having shear thinning properties and a grease-like ink follower (not shown) in an ink containing tube 6, and a tip holder 7 and a ball at the tip of the ink containing tube 6. Ballpoint pen tips 8 rotatably holding (not shown) are sequentially mounted. Further, a refill tail plug 9 having an air flow path (not shown) is attached to the rear end of the ink containing tube 6 of the ballpoint pen refill 5.
【００１４】ボールペンレフィール５を口先部材４及び
前軸２内に収納し、後軸３を前軸２にねじ嵌合１２する
と、後軸３の雌ねじ部１２ｂより後方の内壁面に形成し
た、有底部３ｃに向かって漸次内径が小径となる傾斜段
部１３に、前軸２の後端部２ｂが衝接し、さらにねじ嵌
合１２が進むにつれて、前軸２の後端部２ｂに形成した
切り割り部１１によって、後端部２ｂは内側（矢印Ｆ方
向）に縮径する。この時、ボールペンレフィール５を収
納しない状態で縮径した際に、後端部２ｂの内径Ｎがイ
ンキ収容管６の外径Ｍより小径に設定（Ｎ＜Ｍ）する。
その結果、前軸２の後端部２ｂがボールペンレフィール
５のインキ収容管６の外壁面６ａに当接し、前軸２及び
後軸３内でボールペンレフィール５の径方向のがたつき
は防止される。また、レフィール尾栓９の後端部９ａ
を、後軸３の有底部３ｃに当接するので、筆記時におけ
るボールペンレフィール５の、口先部材４、前軸２及び
後軸３内での前後方向のがたつきは防止される。When the ball-point pen refill 5 is housed in the tip member 4 and the front shaft 2 and the rear shaft 3 is screw-fitted to the front shaft 12, the inner wall surface of the rear shaft 3 rearward of the female screw portion 12b is formed. As the rear end portion 2b of the front shaft 2 abuts on the inclined step portion 13 whose inner diameter gradually decreases toward the bottom portion 3c, and as the screw fitting 12 further proceeds, the slit formed in the rear end portion 2b of the front shaft 2 The rear end portion 2b is reduced in diameter (in the direction of arrow F) by the portion 11. At this time, when the ball-point pen refill 5 is reduced in diameter without being accommodated, the inner diameter N of the rear end portion 2b is set to be smaller than the outer diameter M of the ink containing tube 6 (N <M).
As a result, the rear end portion 2b of the front shaft 2 comes into contact with the outer wall surface 6a of the ink containing tube 6 of the ballpoint pen refill 5, and radial rattling of the ballpoint pen refill 5 in the front shaft 2 and the rear shaft 3 is prevented. It In addition, the rear end 9a of the refill tail plug 9
Is abutted on the bottomed portion 3c of the rear shaft 3, so that rattling of the ballpoint pen refill 5 in the front-back direction in the tip member 4, the front shaft 2 and the rear shaft 3 at the time of writing is prevented.
【００１５】また、前軸２の後端部２ｂのインキ収容管
６の外壁面６ａと当接する部分の当接部Ｓ１を面接触と
することにより、インキ収容管６への圧接力が小さく済
み、インキ収容管６の変形が生じにくいので好ましい。
特にインキ収容管６に剪断減性インキを収容した場合に
は、インキ収容管６の変形により剪断力が加わりインキ
粘度が低下する恐れがあるので効果が顕著である。Further, by making the contact portion S1 of the rear end portion 2b of the front shaft 2 which is in contact with the outer wall surface 6a of the ink containing tube 6 into surface contact, the pressure contact force to the ink containing tube 6 can be made small. It is preferable that the ink containing tube 6 is not easily deformed.
In particular, when the shear-reducing ink is stored in the ink storage tube 6, the shearing force may be applied by the deformation of the ink storage tube 6 and the ink viscosity may be reduced, so that the effect is remarkable.
【００１６】図５及び図６に示す、第２の実施の形態の
ボールペン２１は、第１の実施の形態のボールペン１と
同様に、軸筒が、前軸（軸体）２２と後軸（軸体）２３
とがねじ嵌合３２により連接し、前軸２２の先端に第１
の実施の形態と同様の口先部材４をねじ嵌合３０により
設けた構造である。後軸２３の後端は有底部２３ｃとし
てある。前軸２２の後軸２３内に位置する後端部２２ｂ
には、後端に開口した切り割り部３１を対向して形成し
てある。前軸２２の後端部２２ｂの後端には、開口側の
内径が幅広となる段部３３を形成してある。In the ballpoint pen 21 of the second embodiment shown in FIGS. 5 and 6, as in the ballpoint pen 1 of the first embodiment, the barrel has a front shaft (shaft body) 22 and a rear shaft ( Shaft) 23
And are connected by a screw fitting 32, and the first end is attached to the tip of the front shaft 22.
The tip member 4 similar to that of the embodiment is provided by the screw fitting 30. The rear end of the rear shaft 23 is a bottomed portion 23c. The rear end portion 22b located in the rear shaft 23 of the front shaft 22
A slit portion 31 having an opening at the rear end is formed facing each other. At the rear end of the front end portion 22b of the front shaft 22, a step portion 33 having a wide inner diameter on the opening side is formed.
【００１７】また、第１の実施の形態と同様に、前軸２
２の後端部２２ｂの外径寸法は、後軸２３の内径寸法よ
り大径に設定してあり、ボールペンレフィール５を口先
部材４及び前軸２２内に収納し、後軸２３を前軸２２に
ねじ嵌合３２すると、後軸２３の内壁面に形成した、有
底部２３ｃに向かって漸次内径が小径となる傾斜段部２
３ｂに、前軸２２の後端部２２ｂが衝接し、さらにねじ
嵌合３２が進むにつれて、前軸２２の後端部２２ｂに形
成した切り割り部３１によって、後端部２２ｂは内側
（矢印Ｆ方向）に縮径し、ボールペンレフィール４のイ
ンキ収容管６の外側面６ａに当接し、前軸２２及び後軸
２３内でボールペンレフィール５の径方向のがたつきは
防止される。また、第１の実施の形態の場合と同様に、
レフィール尾栓９の後端部９ａを、後軸２３の有底部２
３ｃに当接するので、筆記時におけるボールペンレフィ
ール５の、口先部材４、前軸２２及び後軸２３内での前
後方向のがたつきは防止される。前軸２２の後端部２２
ｂが、切り割り部３１の開口側の内径が幅広となること
で構成される段部３３の近傍の部分を第１当接部Ｓ２と
し、第１当接部より後方の部分を第２当接部Ｓ３とし
て、軸心方向で異なる２個所の部分（Ｓ２、Ｓ３）でボ
ールペンレフィール５のインキ収容管６の外周面に当接
することにより、軸筒２２内でより安定して保持するこ
とができる。Further, similarly to the first embodiment, the front shaft 2
2, the outer diameter of the rear end portion 22b is set to be larger than the inner diameter of the rear shaft 23, and the ballpoint pen refill 5 is housed in the tip member 4 and the front shaft 22. When the screw fitting 32 is performed on the inclined shaft portion 2 formed on the inner wall surface of the rear shaft 23, the inner diameter gradually decreases toward the bottomed portion 23c.
As the rear end portion 22b of the front shaft 22 abuts against the 3b and the screw fitting 32 further advances, the rear end portion 22b is inward (in the direction of arrow F) by the slit portion 31 formed in the rear end portion 22b of the front shaft 22. ), And contacts the outer surface 6a of the ink containing tube 6 of the ball-point pen refill 4, so that radial rattling of the ball-point pen refill 5 in the front shaft 22 and the rear shaft 23 is prevented. Further, as in the case of the first embodiment,
The rear end portion 9a of the refill tail plug 9 is connected to the bottomed portion 2 of the rear shaft 23.
Since it abuts against 3c, rattling of the ball-point pen refill 5 in the front-rear direction in the tip member 4, the front shaft 22, and the rear shaft 23 during writing is prevented. Rear end 22 of front shaft 22
In b, the portion in the vicinity of the step portion 33 formed by widening the inner diameter of the slit portion 31 on the opening side is the first contact portion S2, and the portion rearward from the first contact portion is the second contact portion. As the portion S3, the two portions (S2, S3) which are different in the axial direction are brought into contact with the outer peripheral surface of the ink containing tube 6 of the ball-point pen refill 5, so that it can be more stably held in the barrel 22. .
【００１８】第２の実施の形態では、前軸２２の後端部
２２ｂがボールペンレフィール５のインキ収容管６の外
周面に当接する第１当接部Ｓ２と第２当接部Ｓ３の２個
所の部分で、ボールペンレフィール５のインキ収容管６
と当接しているが、軸筒２２の後端部２２ｂの内壁に、
軸心に沿った方向に異なる複数の凸部（図示せず）を形
成し、該凸部によってボールペンレフィールのインキ収
容管６を保持してもよい。In the second embodiment, the rear end portion 22b of the front shaft 22 comes into contact with the outer peripheral surface of the ink containing tube 6 of the ballpoint pen refill 5 at two locations, a first contact portion S2 and a second contact portion S3. In the portion, the ink containing tube 6 of the ballpoint pen refill 5
, But on the inner wall of the rear end portion 22b of the barrel 22,
A plurality of different protrusions (not shown) may be formed in the direction along the axis, and the ink storage tube 6 of the ballpoint pen refill may be held by the protrusions.
【００１９】図７、図８に示す第３の実施の形態におけ
るボールペン４１は、第１の実施の形態と同様に、軸筒
が、前軸（軸体）４２と後軸（軸体）４３とがねじ嵌合
５２により連接し、前軸４２の先端に第１の実施の形態
と同様の口先部材４をねじ嵌合５０により設けた構造で
ある。後軸４３の後端は有底部４３ｃとしてある。前軸
４２の後軸４３内に位置する後端部４２ｂには、後端に
開口した切り割り部５１を対向して形成してある。前軸
２２の後端部４２ｂには、開口側の内径が幅広となる段
部５３を形成してある。In the ball-point pen 41 according to the third embodiment shown in FIGS. 7 and 8, the shaft cylinder has a front shaft (shaft body) 42 and a rear shaft (shaft body) 43 as in the first embodiment. Are connected by a screw fitting 52, and the tip member 4 similar to that of the first embodiment is provided by a screw fitting 50 at the tip of the front shaft 42. The rear end of the rear shaft 43 is a bottomed portion 43c. A rear end portion 42b located in the rear shaft 43 of the front shaft 42 is formed with a slit portion 51 having an opening at the rear end so as to face the rear end portion 42b. At the rear end portion 42b of the front shaft 22, a step portion 53 having a wide inner diameter on the opening side is formed.
【００２０】また、第１の実施の形態と同様に、前軸４
２の後端部４２ｂの外径寸法は、後軸４３の内径寸法よ
り大径に設定してあり、ボールペンレフィール５を口先
部材４及び前軸４２内に収納し、後軸４３を前軸４２に
ねじ嵌合５２すると、後軸４３の内壁面に形成した、有
底部４３ｃに向かって漸次内径が小径となる傾斜段部４
３ｂに、前軸４２の後端部４２ｂが衝接し、さらにねじ
嵌合５２が進むにつれて、前軸４２の後端部４２ｂに形
成した切り割り部５１によって、後端部４２ｂは内側
（矢印Ｆ方向）に縮径し、ボールペンレフィール４のイ
ンキ収容管６の外側面６ａに当接し、前軸４２及び後軸
４３内でボールペンレフィール５の径方向のがたつきは
防止される。また、第１の実施の形態の場合と同様に、
レフィール尾栓９の後端部９ａを、後軸４３の有底部４
３ｃに当接するので、筆記時におけるボールペンレフィ
ール５の、口先部材４、前軸４２及び後軸４３内での前
後方向のがたつきは防止される。第２の実施の形態の場
合と同様に、軸筒の後端部４２ｂが、切り割り部５１の
開口側の内径が幅広となる段部５３を形成することによ
り、軸筒の後端部４２ｂが内側に撓み易くなるので好ま
しい。Further, similarly to the first embodiment, the front shaft 4
The outer diameter of the rear end portion 42b of the second rear end 42b is set to be larger than the inner diameter of the rear shaft 43. The ball-point pen refill 5 is housed in the tip member 4 and the front shaft 42, and the rear shaft 43 is inserted into the front shaft 42. When the screw fitting 52 is performed on the inclined step portion 4 formed on the inner wall surface of the rear shaft 43, the inner diameter gradually decreases toward the bottomed portion 43c.
As the rear end portion 42b of the front shaft 42 abuts on the 3b and the screw fitting 52 further advances, the rear end portion 42b is inwardly (in the direction of arrow F) by the slit portion 51 formed in the rear end portion 42b of the front shaft 42. ), Contacting the outer surface 6a of the ink containing tube 6 of the ball-point pen refill 4, and preventing radial wobbling of the ball-point pen refill 5 in the front shaft 42 and the rear shaft 43. Further, as in the case of the first embodiment,
The rear end portion 9a of the refill tail plug 9 is attached to the bottomed portion 4 of the rear shaft 43.
Since it abuts against 3c, back-and-forth rattling of the ball-point pen refill 5 in the tip member 4, the front shaft 42, and the rear shaft 43 during writing is prevented. As in the case of the second embodiment, the rear end portion 42b of the shaft cylinder forms the step portion 53 in which the inner diameter on the opening side of the slit portion 51 is wide so that the rear end portion 42b of the shaft cylinder is It is preferable because it is easily bent inward.
【００２１】また、前述した実施の形態においては、前
軸の後端部が後軸内に挿入した構造であるが、前軸に後
軸の先端部が挿入した構造でも良い。In the above-mentioned embodiment, the rear end of the front shaft is inserted into the rear shaft, but the front end of the rear shaft may be inserted into the front shaft.
【００２２】また、前述した実施の形態においては、前
軸に口先部材をねじ嵌合しているが、ねじ嵌合ではなく
乗り越し嵌合でも良い。後軸の後端は有底部としてある
が、尾栓を装着した構造でも良い。また、前軸の後端部
が後軸の先端部の内壁に当接するが、当接する前軸の後
端部や後軸の先端部の位置は特に限定されない。また、
前軸の後端部に形成する切り割り部の形状や数も特に限
定されない。Further, in the above-mentioned embodiment, the tip member is screw-fitted to the front shaft, but it is not limited to screw-fitting, but may be transit-fitting. Although the rear end of the rear shaft is a bottomed part, a structure with a tail plug attached may be used. Further, although the rear end of the front shaft contacts the inner wall of the front end of the rear shaft, the positions of the rear end of the front shaft and the front end of the rear shaft contacting each other are not particularly limited. Also,
The shape and number of slits formed at the rear end of the front shaft are not particularly limited.
【００２３】また、本実施の形態では、ボールペンレフ
ィールのインキ収容管に剪断減粘性インキを充填してい
るがこれに限るものではなく、繊維束に保持された水性
インキ等や油性インキ等、ボールペンレフィールに充填
する筆記具用インキは適宜選択して使用することができ
る。Further, in the present embodiment, the ink containing tube of the ballpoint pen refill is filled with the shear thinning ink. However, the present invention is not limited to this, and the ballpoint pen such as water-based ink or oil-based ink held in a fiber bundle is used. The ink for writing instruments to be filled in the refill can be appropriately selected and used.
【００２４】[0024]
【発明の効果】本発明は、前述したような構造なので、
寸法を厳密に設定することなく、ボールペンレフィール
を軸筒内の径方向でがたつくことなく収納したボールペ
ンを提供することができた。Since the present invention has the above-mentioned structure,
It was possible to provide a ballpoint pen in which the ballpoint pen refill was housed without rattling in the radial direction inside the barrel without setting the dimensions strictly.
【図１】第１の実施の形態を示すボールペンの要部縦断
面図である。FIG. 1 is a longitudinal sectional view of a main part of a ball-point pen showing a first embodiment.
【図２】図１における、一部省略した要部拡大断面図で
ある。FIG. 2 is an enlarged cross-sectional view of a main part of FIG. 1 with some parts omitted.
【図３】軸筒の後端部が縮径した状態を示す、一部省略
した要部拡大断面図である。FIG. 3 is an enlarged cross-sectional view of a main part with a part omitted, showing a state in which the rear end of the shaft cylinder is reduced in diameter.
【図４】第１の実施の形態のねじ嵌合前の状態を示す図
である。FIG. 4 is a diagram showing a state before screw fitting according to the first embodiment.
【図５】第２の実施の形態を示すボールペンの要部縦断
面図である。FIG. 5 is a longitudinal sectional view of a main part of a ball-point pen showing a second embodiment.
【図６】図５における、一部省略した要部拡大断面図で
ある。FIG. 6 is an enlarged cross-sectional view of a main part with a part omitted in FIG.
【図７】第３の実施の形態を示すボールペンの要部縦断
面図である。FIG. 7 is a longitudinal sectional view of a main part of a ball-point pen showing a third embodiment.
【図８】図７における、一部省略した要部拡大断面図で
ある。8 is an enlarged cross-sectional view of a main part with a part omitted in FIG.
１、２１、４１ ボールペン ２、２２、４２ 軸筒 ２ｂ、２２ｂ、４２ｂ 後端部 ３、２３、４３ 後軸 ３ｂ、２３ｂ、３３ｂ 段部 ４ 口先部材 ５ ボールペンレフィール ６ インキ収容筒 ６ａ 外壁 ７ チップホルダー ８ ボールペンチップ ９ レフィール尾栓 ９ａ 後端部 １０、３０、５０ ねじ嵌合部 １１、３１、５１ 切り割部 １２、３２、５２ ねじ嵌合部 ３３、５３ 段部 Ｋ 後端部の外径 Ｌ 後軸の内径寸法 Ｍ インキ収容筒の外径 Ｎ 後端部の内径 Ｓ１、Ｓ２、Ｓ３、Ｓ４ 当接面 1, 21, 41 ballpoint pen 2, 22, 42 shaft cylinder 2b, 22b, 42b Rear end 3, 23, 43 Rear axle Steps 3b, 23b, 33b 4 Tip member 5 Ballpoint pen refill 6 Ink storage cylinder 6a outer wall 7 Chip holder 8 ballpoint pen tip 9 Refill tail plug 9a rear end 10, 30, 50 Screw fitting part 11, 31, 51 Cutting part 12, 32, 52 Screw fitting part 33, 53 steps K rear end outer diameter L Inner diameter of rear shaft Outer diameter of M ink container N Inner diameter of rear end S1, S2, S3, S4 Contact surface
Claims (4)
により構成され、一方の軸体の一端部が他方の軸体内に
挿入してなる軸筒内に、インキ収容管に筆記具用インキ
を充填したボールペンレフィールを、該ボールペンレフ
ィールの後端部を軸筒の後端部の軸体に当接して収納し
てなるボールペンにおいて、前記一方の軸体の一端部
に、端部が開口した切り割り部を形成するとともに、一
端部の少なくとも切り割り部を形成した軸体部分の外径
を対向した他方の軸体の内径より大径に形成し、前記一
方の軸体の一端部が対向した他方の軸体の内壁に衝接す
ることにより一端部が縮径し、一端部を前記ボールペン
レフィールのインキ収容管の外周面に当接させて収納し
たことを特徴とするボールペン。1. An ink for a writing instrument in an ink containing tube in a shaft cylinder formed by connecting at least two shaft bodies in series, one end of which is inserted into the other shaft body. In a ballpoint pen in which a ball-point pen refill filled with is housed by abutting the rear end of the ball-point refill to the shaft body at the rear end of the barrel, the end is opened at one end of the one shaft. While forming the slit portion, at least one end portion of the shaft portion forming the slit portion is formed to have an outer diameter larger than the inner diameter of the other shaft member facing the other, and one end of the one shaft member facing the other The ball-point pen is stored by abutting against the inner wall of the shaft body so that the diameter of one end is reduced and the one end is brought into contact with the outer peripheral surface of the ink containing tube of the ball-point pen refill.
の内径が拡径する段部又は前記切り割り部を形成した一
方の軸体の一端部の外壁に、一端部の外径が縮径する段
部を設けてなる請求項１に記載のボールペン。2. An outer diameter of one end portion of an outer wall of one end portion of one of the shaft bodies in which a step portion whose inner diameter of the one end portion expands or the slit portion is formed on an inner wall of the one end portion of the one shaft body. The ball-point pen according to claim 1, wherein the ball-point pen has a stepped portion whose diameter is reduced.
ールペンレフィールのインキ収容管と面接触することを
特徴とする請求項１ないし２の何れか１項に記載のボー
ルペン。3. The ballpoint pen according to claim 1, wherein an inner wall of one end portion of the one shaft body comes into surface contact with an ink storage tube of the ballpoint pen refill.
ールペンレフィールのインキ収容管と軸心方向で異なる
２個所以上で当接することを特徴とする請求項１ないし
３の何れか１項に記載のボールペン。4. The inner wall of one end of the one shaft member abuts the ink containing tube of the ball-point pen refill at two or more positions different in the axial direction. The ballpoint pen according to item.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002052923A JP2003251986A (en) | 2002-02-28 | 2002-02-28 | Ball-point pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002052923A JP2003251986A (en) | 2002-02-28 | 2002-02-28 | Ball-point pen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003251986A true JP2003251986A (en) | 2003-09-09 |
Family
ID=28664489
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2002052923A Pending JP2003251986A (en) | 2002-02-28 | 2002-02-28 | Ball-point pen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003251986A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014205239A (en) * | 2013-04-10 | 2014-10-30 | 三菱鉛筆株式会社 | Writing instrument |
-
2002
- 2002-02-28 JP JP2002052923A patent/JP2003251986A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014205239A (en) * | 2013-04-10 | 2014-10-30 | 三菱鉛筆株式会社 | Writing instrument |
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