JPH0222883U - - Google Patents
Info
- Publication number
- JPH0222883U JPH0222883U JP10160488U JP10160488U JPH0222883U JP H0222883 U JPH0222883 U JP H0222883U JP 10160488 U JP10160488 U JP 10160488U JP 10160488 U JP10160488 U JP 10160488U JP H0222883 U JPH0222883 U JP H0222883U
- Authority
- JP
- Japan
- Prior art keywords
- diameter
- ball
- center hole
- holding part
- deformation
- 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
Links
- 239000002184 metal Substances 0.000 claims 1
Landscapes
- Pens And Brushes (AREA)
Description
第１図と第２図とは本考案の一実施例を示し、
第１図は第２図の―線横断面図、第２図は第
１図の―線縦断面図、第３図と第４図とは従
来技術を説明するためのもので、第３図は第４図
の―線横断面図、第４図は第３図の―線
縦断面図。
Ａ…チツプ、Ｂ…ボール、１…ボール抱持部、
２…中心孔、３…中心孔２の放射状溝部、４…ボ
ール抱持部１の底壁、５…ボール受座部、６…ボ
ール抱持部１の先端小径化部、７…塑性変形部。
1 and 2 show an embodiment of the present invention,
Fig. 1 is a cross-sectional view taken along the line - - in Fig. 2, Fig. 2 is a longitudinal sectional view taken along - line in Fig. 1, Figs. 3 and 4 are for explaining the prior art, and Fig. 3 4 is a cross-sectional view taken along the line ``-'' in FIG. 4, and FIG. 4 is a vertical sectional view taken along the line ``--'' in FIG. A...chip, B...ball, 1...ball holding part,
2... Center hole, 3... Radial groove of center hole 2, 4... Bottom wall of ball holding part 1, 5... Ball receiving seat part, 6... Tip reduced diameter part of ball holding part 1, 7... Plastic deformation part .
Claims (1)
口する中心孔の放射状溝部を封しないよう、押圧
変形によつて球面状のボール受座部を設けた金属
チツプを使用してなるボールペンにおいて、前記
ボール受座部の径がボール径の８０〜９０％であ
り、また、中心孔の径がボール径の４５〜５０％
であり、更に、前記ボール受座部を形成する際の
押圧変形によつて前記中心孔の開口部に生じる塑
性変形部の軸方向長さが、前記中心孔の径の１０
〜２０％であることを特徴とするボールペン。 A ballpoint pen that uses a metal chip with a spherical ball seat formed on the bottom wall of the ball holding part by deformation by pressure so as not to seal the radial groove of the central hole opening in the ball holding part. The diameter of the ball seat portion is 80 to 90% of the ball diameter, and the diameter of the center hole is 45 to 50% of the ball diameter.
Further, the length in the axial direction of the plastic deformation portion generated at the opening of the center hole due to press deformation when forming the ball seat portion is 10 times the diameter of the center hole.
A ballpoint pen characterized in that it is ~20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10160488U JPH0638709Y2 (en) | 1988-07-30 | 1988-07-30 | Ballpoint pen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10160488U JPH0638709Y2 (en) | 1988-07-30 | 1988-07-30 | Ballpoint pen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0222883U true JPH0222883U (en) | 1990-02-15 |
| JPH0638709Y2 JPH0638709Y2 (en) | 1994-10-12 |
Family
ID=31330751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10160488U Expired - Lifetime JPH0638709Y2 (en) | 1988-07-30 | 1988-07-30 | Ballpoint pen |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0638709Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010084971A1 (en) | 2009-01-23 | 2010-07-29 | ぺんてる株式会社 | Ink for ballpoint pens and ballpoint pen using same |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6082920A (en) * | 1997-01-07 | 2000-07-04 | Mitsubishi Pencil Kabushiki Kaisha | Ball-point pen |
| JP4706371B2 (en) * | 2005-07-27 | 2011-06-22 | ぺんてる株式会社 | Ballpoint pen tip |
| JP4827142B2 (en) * | 2007-06-29 | 2011-11-30 | 株式会社パイロットコーポレーション | Ballpoint pen tip |
-
1988
- 1988-07-30 JP JP10160488U patent/JPH0638709Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010084971A1 (en) | 2009-01-23 | 2010-07-29 | ぺんてる株式会社 | Ink for ballpoint pens and ballpoint pen using same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0638709Y2 (en) | 1994-10-12 |