JPH02121984U - - Google Patents
Info
- Publication number
- JPH02121984U JPH02121984U JP3145889U JP3145889U JPH02121984U JP H02121984 U JPH02121984 U JP H02121984U JP 3145889 U JP3145889 U JP 3145889U JP 3145889 U JP3145889 U JP 3145889U JP H02121984 U JPH02121984 U JP H02121984U
- Authority
- JP
- Japan
- Prior art keywords
- ball
- valve
- ink
- vertical direction
- chip body
- 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
- 230000002265 prevention Effects 0.000 claims 1
Landscapes
- Pens And Brushes (AREA)
Description
第１図は、本考案のボールペンの上向き時にお
けるボールペンペン先およびインク収容管の１部
の縦断面図、第２図は本考案の書写時における同
上縦断面図、第３図はチツプ本体２の内孔のイン
ク流路用、中心孔および周溝と弁用ボールとの関
連の拡大図である。弁用ボールの動きは、２点鎖
線で示されている。
１……書写用ボール、２……チツプ本体、３…
…インク導溝、４……弁用ボール、５……つなぎ
部材、６……弁室、７……インク流路、８……イ
ンク収容管。
Fig. 1 is a vertical cross-sectional view of a part of the ballpoint pen nib and ink storage tube of the present invention when the ballpoint pen is facing upward, Fig. 2 is a longitudinal cross-sectional view of the same as the same when copying according to the present invention, and Fig. 3 is a tip body 2. FIG. 3 is an enlarged view of the relationship between the inner hole for the ink flow path, the center hole, the circumferential groove, and the valve ball. The movement of the valve ball is shown by the dash-dot line. 1... Writing ball, 2... Chip itself, 3...
... Ink guide groove, 4 ... Valve ball, 5 ... Connecting member, 6 ... Valve chamber, 7 ... Ink channel, 8 ... Ink storage tube.
Claims (1)
心として放射状に外方向に向い、かつ垂直方向に
貫通する複数の周溝３を有するチツプ本体２の内
孔に、周溝の外接円径に等しいか、やや小さい径
のボール４を遊動自在に装入し、チツプ本体の後
端より、先端部にボールの径より小さいインク誘
導孔を有するインク収用管とのつなぎ部材５を嵌
入して弁室６を形成し、弁室内での弁用ボール４
の垂直方向の動く距離を、０．０２ｍｍから０．
１ｍｍの範囲であることを、特徴とするインク逆
流防止機構を備えたボールペンのペン先。 In the inner hole of the chip body 2, which has a center hole that penetrates in the vertical direction and a plurality of circumferential grooves 3 that face radially outward from the center hole and that penetrate in the vertical direction, A ball 4 of the same or slightly smaller diameter is freely movable, and a connecting member 5 with an ink intake pipe having an ink guide hole smaller than the diameter of the ball at the tip is inserted from the rear end of the chip body to open the valve. A valve ball 4 in the valve chamber forms a chamber 6.
The vertical movement distance of 0.02 mm to 0.02 mm.
A ballpoint pen nib equipped with an ink backflow prevention mechanism characterized by a range of 1 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3145889U JPH02121984U (en) | 1989-03-22 | 1989-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3145889U JPH02121984U (en) | 1989-03-22 | 1989-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02121984U true JPH02121984U (en) | 1990-10-04 |
Family
ID=31257330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3145889U Pending JPH02121984U (en) | 1989-03-22 | 1989-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02121984U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999028139A1 (en) * | 1997-12-03 | 1999-06-10 | Sakura Color Products Corporation | Ink applicator, ink backflow prevention mechanism of ink applicator, and a pen tip |
| JP2003019891A (en) * | 2001-07-10 | 2003-01-21 | Pilot Ink Co Ltd | Writing utensil refill |
| JP2010155346A (en) * | 2008-12-26 | 2010-07-15 | Pilot Corporation | Ball-point pen |
-
1989
- 1989-03-22 JP JP3145889U patent/JPH02121984U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999028139A1 (en) * | 1997-12-03 | 1999-06-10 | Sakura Color Products Corporation | Ink applicator, ink backflow prevention mechanism of ink applicator, and a pen tip |
| JP2003019891A (en) * | 2001-07-10 | 2003-01-21 | Pilot Ink Co Ltd | Writing utensil refill |
| JP4606659B2 (en) * | 2001-07-10 | 2011-01-05 | パイロットインキ株式会社 | Writing instrument refill |
| JP2010155346A (en) * | 2008-12-26 | 2010-07-15 | Pilot Corporation | Ball-point pen |
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