EP0336007A1 - Kugelschreiberspitze mit einem Metallröhrchen - Google Patents

Kugelschreiberspitze mit einem Metallröhrchen Download PDF

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Publication number
EP0336007A1
EP0336007A1 EP88117204A EP88117204A EP0336007A1 EP 0336007 A1 EP0336007 A1 EP 0336007A1 EP 88117204 A EP88117204 A EP 88117204A EP 88117204 A EP88117204 A EP 88117204A EP 0336007 A1 EP0336007 A1 EP 0336007A1
Authority
EP
European Patent Office
Prior art keywords
ball
metal tube
plastic
pen tip
ballpoint pen
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.)
Withdrawn
Application number
EP88117204A
Other languages
German (de)
English (en)
French (fr)
Inventor
Roland Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gebr Schneider GmbH
Original Assignee
Gebr Schneider GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Gebr Schneider GmbH filed Critical Gebr Schneider GmbH
Publication of EP0336007A1 publication Critical patent/EP0336007A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K7/00—Ball-point pens
    • B43K7/10—Arrangements for feeding ink to the ball points
    • B43K7/105—Feed bars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K1/00—Nibs; Writing-points
    • B43K1/08—Nibs; Writing-points with ball points; Balls or ball beds

Definitions

  • the invention relates to a ballpoint pen tip with a metal tube and a plastic bearing for the writing ball arranged at its front mouth.
  • Such a ballpoint pen tip is known from DE-PS 27 12 058.
  • the combination of a metal tube with a ball bearing made of plastic ensures that the tip itself is made of resistant material, namely metal, but the ball is still mounted on plastic and can therefore be rotated more easily than if the ball seat were also made of metal .
  • the ballpoint pen tip mentioned at the outset is characterized in that its metal tube, at least on its inside, is provided with an injected plastic coating at least in the region of the ball bed and that the plastic coating has at least one capillary-acting indentation leading to the ball.
  • a tube serving as a metallic ballpoint pen tip can therefore be injected with plastic in a single operation, and the ink supply line to the ball can also be formed in the process. This can be costly rework for inserting a plastic insert, its fitting and the necessary attachments of ink guide channels or the like. be avoided. Accordingly, difficulties with dimensional tolerances are eliminated, because from the outset by spraying tools and their dimensions a largely constant result can be achieved in the series production of such ballpoint pen tips.
  • the plastic lining injected into the metal tube encloses and delimits the central ink guide channel and has cross-sections with capillary slits or the like directed obliquely outwards or radially outwards, which lead to the ink line in the longitudinal direction and open at the ball seat of the plastic injection.
  • highly viscous as well as low-viscosity ink after it has been brought up to the ball, can be continuously brought up to the ball even when the writing is held horizontally or upwards.
  • the smallest possible, yet stable ballpoint pen tip with a sufficiently large ball is obtained if the inside diameter of the metal tube in the area of the ball bed corresponds to the ball diameter and the injected plastic coating under the ball ends forming a bed.
  • the ball touches metal on the side, but on its side facing away from the respective writing surface, the less rubbing plastic.
  • the capillary-acting slots which are open to the ink guide channel and the spherical surface, can be distributed uniformly around the circumference of the ink guide channel.
  • a particularly advantageous embodiment of the above-mentioned ballpoint pen tip of its own worthy of protection can consist in that the plastic lining of the metal tube extends at least in regions to the outside thereof, the plastic lining on the inside being at least partially connected to the coating on the outside. This results in a particularly safe and permanent connection between metal tube and plastic jacket.
  • the plastic coating on the inside of the metal tube can continue at least on its end facing away from the writing tip into a casing on the outside. On the one hand, this does not hinder the formation of the ball bed and, on the other hand, creates a good connection between the inner and outer cladding, a further development being made possible in which the outer plastic coating of the metal tube has an outer shape and outer contour that matches the corresponding insertion opening of a writing instrument barrel . Thus, this can be made of plastic. train at the same time simplify and improve the connection to the actual writing instrument barrel, since additional machining of the outside to adapt to the writing instrument barrel can be avoided in this way.
  • inner and / or outer profiles of the metal pipe can be provided, which bring about a corresponding counter-profiling of the plastic casing. This improves the connection between metal and plastic and the mutual power transmission. It is particularly expedient if the metal tube or the like has at least one recess and / or a transverse perforation penetrating its wall. has through which the inner plastic liner is particularly integrally connected to the outer plastic liner. With simultaneous connection of the inner and outer plastic sheathing at the end of the metal tube facing away from the writing tip, this results in a practically all-round positive connection between the metal tube and the plastic sheathing.
  • the outer plastic coating can have a radially projecting widening as a stop in relation to the edge of the insertion opening of the writing instrument barrel.
  • this stop can represent the end of the outer plastic coating, against which the metal tube can then protrude up to the actual writing tip.
  • the metal tube has an inwardly projecting projection with an undercut or the like. which, after spraying, is filled with the inner plastic coating.
  • the metal tube and plastic get caught together so that if the plastic shrinks, it does not extend over the entire length of the metal tube and can thus impair the actual ball bed.
  • the projection provided on the inside of the metal tube rotates in a ring shape in order to achieve a uniform effect over the entire cross section of the tube.
  • the projection provided in the interior of the metal tube preferably a ring projection
  • the distance of this projection from the ball bed being approximately one third to one and a half times the diameter of the ball, preferably corresponds approximately to the size of the radius or the diameter of the ball.
  • this projection provided in the interior of the metal tube near the ball seat can reach the bottom of the capilla projecting outward from the ink guide channel slots are enough. On the one hand, this gives it a sufficient height relative to the wall of the metal tube, but on the other hand it does not hinder the flow of ink through the capillary slots.
  • a ballpoint pen tip, generally designated 1, with a metal tube 2 and a writing ball 3 arranged at its front mouth can be inserted into a writing device shaft 4 in a known manner.
  • the metal tube 2 has a smaller cross section in the spherical region than in the insertion region of the writing instrument shaft 4, where an ink guide wick 5 is also provided in its interior (see FIG. 1).
  • FIGS. 2 to 5 At the front mouth of the metal tube 2, a bearing or bed 6 made of plastic for the writing ball 3 is provided according to FIGS. 2 to 5. It can be seen above all in FIGS. 2 and 3 that the metal tube 2 is provided on its inside in the region of the ball bed 6 with an injected plastic coating 7 and that the plastic coating 7 has capillary-acting indentations 8a leading to the ball 3. It is particularly clear from FIGS. 4 to 8 that the plastic lining 7 injected into the metal tube 2 encloses the central ink guide channel 8 - also for receiving the wick 5 - and in cross section obliquely outwards, in the exemplary embodiment radially outwardly directed capillary slots or the like.
  • Has indentations 8a which, as shown in FIG. 3, extend in the longitudinal direction to the surface of the ball and open at the ball seat 6 of the plastic injection molding 7.
  • the inside diameter of the metal tube 2 in the region of the ball bed 6 corresponds to the ball diameter and the injected plastic coating 7 ends under the ball 3 and thus forms the bed 6 with its end face, so the ball 3 comes with the inside of the metal tube 2 in contact, but while the actual ball bed 6 loaded during writing is made of plastic and ensures a smooth ball rotation.
  • the outer dimension of the metal tube 2 can thus be chosen to be as small as possible despite the plastic lining 7.
  • the capillary-acting slots 8a which are open to the ink guide channel 8 and the spherical surface, are evenly distributed over the circumference of the ink guide channel 8. In this way it can be achieved that ink directed to the ball 3 keeps flowing and being conveyed again, even if the ballpoint pen tip 1 is used horizontally or even pointing upwards.
  • the plastic lining 7 of the metal tube 2 extends in some areas to the outside thereof, it being possible for the plastic lining 7 on the inside to be connected to the coating 7 on the outside.
  • the plastic coating 7 continues on the inside of the metal tube 2 at its end facing away from the writing tip and writing ball 3 into the outer casing.
  • an inner and outer profiling 9 of the metal tube 2 is provided for a positive connection of the metal tube 2 to the plastic casing 7, also in the axial direction, which effects a corresponding counter-profiling of the plastic casing 7.
  • the metal tube 2 has recesses or transverse perforations 10 passing through its wall, through which the inner plastic lining 7 is integrally connected to the outer casing.
  • the outer plastic coating 7 of the metal tube 2 has an outer shape and outer contour that matches the corresponding insertion opening 11 of the writing instrument barrel 4.
  • axial clamping slots or the like. on the outside of the plastic coating be provided.
  • the outer plastic coating 7 has a radially projecting widening as a stop 12 opposite the edge 13 of the insertion opening 11 of the writing instrument barrel 4.
  • the plastic casing 7 is given an additional function in this way.
  • the metal tube 7 also has an inwardly projecting projection 14 which is encompassed by the inner plastic coating 7 after the injection.
  • This projection 14 runs in a ring shape in the metal tube 2 and is arranged near the ball bed 6.
  • the distance of this annular projection 14 from the ball bed 6 corresponds approximately to the radius of the ball in the exemplary embodiment and can thus introduce the axial forces generated by the writing pressure on the ball 3 from the ball bed 6 well into the metal tube 2.
  • this projection 14 can prevent the ball bed 6 from getting too deep within the metal tube when the plastic cools and shrinks.
  • this ring projection 14 provided in the interior of the metal tube 2 near the ball seat 6 extends to the bottom of the capillary slots 8a projecting outward from the ink guide channel 8.
  • the passage through these slots 8a is not hindered, but the largest possible projection 14 is nevertheless created.

Landscapes

  • Pens And Brushes (AREA)
EP88117204A 1988-04-06 1988-10-15 Kugelschreiberspitze mit einem Metallröhrchen Withdrawn EP0336007A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3811530A DE3811530C1 (enrdf_load_stackoverflow) 1988-04-06 1988-04-06
DE3811530 1988-04-06

Publications (1)

Publication Number Publication Date
EP0336007A1 true EP0336007A1 (de) 1989-10-11

Family

ID=6351478

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88117204A Withdrawn EP0336007A1 (de) 1988-04-06 1988-10-15 Kugelschreiberspitze mit einem Metallröhrchen

Country Status (4)

Country Link
US (1) US5000605A (enrdf_load_stackoverflow)
EP (1) EP0336007A1 (enrdf_load_stackoverflow)
JP (1) JPH01301395A (enrdf_load_stackoverflow)
DE (1) DE3811530C1 (enrdf_load_stackoverflow)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2676552B1 (fr) * 1991-05-15 1996-01-12 Asahi Optical Co Ltd Dispositif de mise au point automatique.
EP0725736B1 (en) * 1992-06-26 2000-08-30 The Gillette Company Ball point pen
USD408451S (en) * 1998-02-26 1999-04-20 The Pilot Ink Co., Ltd. Pen point of a ball-point pen
US6224284B1 (en) 1999-10-12 2001-05-01 Dri Mark Products Incorporated Metallic ink composition for wick type writing instruments
SE0001790D0 (sv) * 2000-05-12 2000-05-12 Aamic Ab Hydrophobic barrier
JP4101499B2 (ja) * 2001-10-31 2008-06-18 パイロットインキ株式会社 ボールペン
FR2839011B1 (fr) * 2002-04-30 2007-10-12 Bic Soc Poussoir pour bille pour une pointe d'applicateur et ensemble formant pointe incorporant un tel poussoir
CN102602199B (zh) * 2012-03-30 2014-08-27 龚利勤 一种多彩中性闪光水粉墨水书写绘画笔
US9290036B2 (en) * 2013-03-14 2016-03-22 Crayola Llc Roller ball pen for use with metallic inks
US20140358172A1 (en) * 2013-05-30 2014-12-04 Mei-Chi-Na Hsinyen Co., Ltd. Easy-to-grip anti-splash needle mounting structure
JP6633363B2 (ja) * 2015-11-26 2020-01-22 ゼブラ株式会社 ボールペンチップ及び該ボールペンチップの製造方法並びに該ボールペンチップを具備した筆記具

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660151A (en) * 1948-04-28 1953-11-24 Scripto Inc Writing instrument
FR1225648A (fr) * 1957-08-19 1960-07-01 D C B Ltd Perfectionnements aux instruments à écrire
FR1234129A (fr) * 1957-07-19 1960-10-14 D C B Ltd Perfectionnements à la fabrication des instruments à écrire
US3048148A (en) * 1959-03-18 1962-08-07 Salvatore P Sirianni Ball point pen
US4457644A (en) * 1979-12-21 1984-07-03 Pilot Ink Co., Ltd. Ball-point pen tip
DE8804539U1 (de) * 1988-04-06 1988-05-19 Gebr. Schneider Gmbh, 7741 Tennenbronn Kugelschreiberspitze mit einem Metallröhrchen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE887924C (de) * 1951-11-18 1953-08-27 Max Schmidt Verfahren zur Herstellung von Kugelschreiberminen
DE1687504U (de) * 1954-07-09 1954-11-18 Werner Petersson Tintenkugelschreiber.
US2911949A (en) * 1955-01-10 1959-11-10 Parker Pen Co Writing instrument
DE1141054B (de) * 1957-11-02 1962-12-13 Owens Illinois Glass Co Kugelauftrag-Vorrichtung
FR1252182A (fr) * 1959-12-17 1961-01-27 Fagard A J & Cie Perfectionnement aux pointes des stylographes à bille
IT1086630B (it) * 1976-03-19 1985-05-28 Pentel Kk Punta per penna a sfera e procedimento di produzione

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2660151A (en) * 1948-04-28 1953-11-24 Scripto Inc Writing instrument
FR1234129A (fr) * 1957-07-19 1960-10-14 D C B Ltd Perfectionnements à la fabrication des instruments à écrire
FR1225648A (fr) * 1957-08-19 1960-07-01 D C B Ltd Perfectionnements aux instruments à écrire
US3048148A (en) * 1959-03-18 1962-08-07 Salvatore P Sirianni Ball point pen
US4457644A (en) * 1979-12-21 1984-07-03 Pilot Ink Co., Ltd. Ball-point pen tip
DE8804539U1 (de) * 1988-04-06 1988-05-19 Gebr. Schneider Gmbh, 7741 Tennenbronn Kugelschreiberspitze mit einem Metallröhrchen

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 9, no. 94 (M-374)(1817) 24 April 1985, & JP-A-59 218888 (GOKOU KAGAKU) 12 Oktober 1984, *

Also Published As

Publication number Publication date
US5000605A (en) 1991-03-19
JPH01301395A (ja) 1989-12-05
DE3811530C1 (enrdf_load_stackoverflow) 1989-10-12

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