EP1827869B1 - Schreibinstrument mit patronenhalter - Google Patents

Schreibinstrument mit patronenhalter Download PDF

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Publication number
EP1827869B1
EP1827869B1 EP05798497A EP05798497A EP1827869B1 EP 1827869 B1 EP1827869 B1 EP 1827869B1 EP 05798497 A EP05798497 A EP 05798497A EP 05798497 A EP05798497 A EP 05798497A EP 1827869 B1 EP1827869 B1 EP 1827869B1
Authority
EP
European Patent Office
Prior art keywords
writing instrument
teeth
cartridge
longitudinal axis
angle
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.)
Expired - Fee Related
Application number
EP05798497A
Other languages
English (en)
French (fr)
Other versions
EP1827869A2 (de
Inventor
Franck Rolion
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.)
BIC SA
Original Assignee
BIC SA
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 BIC SA filed Critical BIC SA
Publication of EP1827869A2 publication Critical patent/EP1827869A2/de
Application granted granted Critical
Publication of EP1827869B1 publication Critical patent/EP1827869B1/de
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • B43K24/04—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by means sliding in longitudinally-slotted casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K24/00—Mechanisms for selecting, projecting, retracting or locking writing units
    • B43K24/02—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions
    • B43K24/08—Mechanisms for selecting, projecting, retracting or locking writing units for locking a single writing unit in only fully projected or retracted positions operated by push-buttons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00—Pens with writing-points other than nibs or balls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00—Pens with writing-points other than nibs or balls
    • B43K8/24—Pens with writing-points other than nibs or balls characterised by the means for retracting writing-points

Definitions

  • the present invention relates to writing instruments.
  • the invention relates to a writing instrument comprising a drum extending along a longitudinal axis, a cartridge arranged inside the drum and having a front end connected to a writing tip and a rear end, a cartridge holder connected to the barrel and against which the rear end of the cartridge is supported.
  • the object of the present invention is to provide a cartridge holder adapted to receive substantially different shaped cartridges without, however, excessively increasing the amount of material and the complexity of the molding.
  • a writing instrument of the kind in question is characterized in that the cartridge holder comprises a base extending in a plane substantially transverse to the longitudinal axis and at least three studs. extending generally along the longitudinal axis from the base towards the front, each of said pads having an inner face oriented towards the longitudinal axis which forms an acute angle with the portion of the longitudinal axis extending towards the front end from the base, and between which is wedged the cartridge.
  • the cartridge is automatically positioned between the pads arranged on the base of the support during assembly of the various elements composing the writing instrument, and bears against the pads so as to be substantially parallel to the longitudinal axis.
  • the figure 1 represents a writing instrument 10 which comprises a tubular shaft 12 extending along a longitudinal axis Z between two ends.
  • a front end 12a has a passage 14 for a writing tip 16.
  • Said writing tip 16 is connected directly to a front end of a cartridge 18 which extends along an axis substantially parallel to the longitudinal axis Z.
  • the second end 12b of the drum receives a support 20 against which the rear end of the cartridge 18 bears.
  • the cartridge 18 is biased against the support 20 by means of a spring 22, arranged between bosses of the cartridge and the conical inner wall of the front end 12a of the drum located near the writing tip.
  • the spring 22 cooperates with an output mechanism and retraction of the writing tip 16, to bring and maintain the writing tip 16 in a writing position or in a storage position.
  • the mechanism is in one piece integrally molded with the support 20.
  • the mechanism has an elastic arm 23 provided with projecting buttons 24 which cooperate with windows made in the barrel to block the cartridge 18 and therefore the writing tip 16 , in one or other of the positions described above.
  • the cartridge 18 is supported on the support at its rear end by at least three points of contact, ensuring good stability.
  • the support 20 has a base 26 extending in a transverse plane perpendicular to the longitudinal axis Z.
  • the base 26 has a surface of substantially identical shape to the inner section of the shaft 12, which is here substantially circular but it could be polygonal so as to slide freely with a small clearance in the shaft 12.
  • the base 26 is concentric with the shaft 12.
  • the base 26 further comprises three studs 28, 30, 32 distributed angularly in a regular manner on the circular surface of the base 26.
  • Each stud 28, 30, 32 extends generally along the longitudinal axis Z from the base 26 towards the writing tip 16.
  • Each of the three pads 28, 30, 32 has an inner face 28a, 30a, 32a oriented towards the longitudinal axis Z and forming an acute angle with the longitudinal axis, so that the top of the angle formed by the intersection of the longitudinal axis Z and the plane defined by the inner face 28a, 30a, 32a of a stud 28, 30, 32 is directed towards the rear end 12b of the barrel 12.
  • the inclination of the inner faces 28a, 30a, 32a of the pads 28, 30, 32 guides the rear end of the cartridge 18 to a position in which it is in contact with each of the three pads, and therefore wedged , and this for cartridges having a rear end of substantially variable diameter. It is also possible for a cartridge 18 of smaller diameter than its rear end rests directly on the base while being centered by the pads 28, 30, 32.
  • the inner faces 28a, 30a, 32a of the three studs 28, 30, 32 are flat and define a plurality of circles inscribed together in a transverse plane. perpendicular to the longitudinal axis coaxial with the base 26. This arrangement guides the rear end of the cartridge 18 so as to center the cartridge 18.
  • the rear end of the cartridge then bears on each of the three pads at a point.
  • the pads 28, 30, 32 also have an outer face 28b, 30b, 32b, oriented radially outwardly, and having a convex shape conforming to the inner wall of the barrel 12, for sliding therein.
  • a first 28 and a second 30 pads each have a single side face 28c, 30c which extends between the inner face 28a, 30a and the outer face 28b, 30b.
  • a third stud 32 has two lateral faces 32c, 32d extending between the inner face 32a and the outer face 32b. As shown in figure 3 , the lateral face 28c of the first stud 28 is located in a plane P1 passing through the lateral face 32c of the third stud 32, and the lateral face 30c of the second stud 30 is located in a plane P2 passing through the second lateral face 32d of the third plot 32.
  • the planes P1, P2 mentioned above are perpendicular to the base 26, and parallel to the axis Z. They form an angle ⁇ said draft angle, and are intersecting along a straight line located outside the base 26. On the figure 3 , a point of this line is represented by the reference S which corresponds to the vertex of the angle ⁇ .
  • the angle formed by the two planes says clearance angle ⁇ , is about 5 ° in the embodiment shown, but could be between 2 ° and 15 °, to facilitate demolding without excessively reducing the size of the pads.
  • the crown S of the clearance angle ⁇ is situated on the side of the third stud 32, so that the third stud 32 is closer to the vertex S of the clearance angle ⁇ than the first 28 and second studs 30.
  • the third stud 32 could be included in the clearance angle ⁇ with side faces 32c, 32d forming an angle directed towards the vertex S of the draft angle ⁇ .
  • the side faces 32c, 32d would not be coplanar with the side faces 28c, 30c of the first 28 and second 30 pads.
  • the pads 28, 30, 32 are made by molding, by means of a mold 36 in two parts 38, 40, which are in the form of half-shells. Each part of the mold 36 has reliefs corresponding to the lateral faces and the inner faces of the studs.
  • the figure 4 represents a cross-sectional view of the mold 36 when the two parts 38, 40 are brought together so as to form the imprint of the studs 28, 30, 32 on the base 26.
  • the hatched portions correspond to the section of the two parts 38, 40 of the mold 36, which will be slightly in front of the base 26 of the support 20, during molding.
  • the two parts of the mold extend beyond the circle delimited by the base 26, and have a joint plane J.
  • the first portion 38 of the mold has a parallelepiped-shaped relief 42, in which two opposite faces 44, 46 are intended to mold the lateral faces 28c, 30c of the first and second studs 28, 30, and a central face 48 is intended to mold the inner face 32a of the third stud 32.
  • the other reliefs 50, 52 shown on the figure 3 belong to the second portion 40 of the mold 36.
  • Each other relief 50, 52, said second relief has a triangular shape whose facing sides 54, 56 form the imprint of the side faces of the third stud and the opposite sides 58, 60 form respectively the inner face 28a, 30a of the first 28 and second 30 pads.
  • the two opposite faces 44, 46 of the first relief 42 are arranged on planes having an angle substantially corresponding to the relief angle ⁇ cited above. So after molding the side faces 28c, 30c of the first and second pads 28, 30 are oriented relative to each other according to said clearance angle ⁇ .
  • the sides 54, 56 of the second reliefs 50, 52 of the mold, which form the imprint of the lateral faces 32c, 32d of the third stud 32, are also oriented relative to each other along said clearance angle ⁇ , since the sides 54, 56 of the second reliefs 50, 52 each pass through the same plane as that of each of the two opposite sides 44, 46 of the first relief 42.
  • each lateral face 32c, 32d of the third stud 30 extends in the same plane as respectively the lateral face 28c of the first stud and the side face 30c of the second stud.
  • the second reliefs 50, 52 of the mold 36 cooperate with the first relief 42, so as to make the other faces of the different studs 28, 30, 32.
  • the two parts 38, 40 of the mold 36 are removed in a radial direction R with respect to the longitudinal axis Z and in an opposite direction. On the figure 4 this direction corresponds to the bisector of the draft angle ⁇ .
  • the inner, lateral and outer faces of the pads 28, 30, 32 have a normal direction or a curvature oriented so that it can be demolded in the radial direction R.
  • the draft angle ⁇ and the angle formed by the two lateral faces 32c, 32d of the third stud 32 must have their vertex S towards the same direction.
  • the width of the inner face 32a of the third stud 32 must be included in the clearance angle ⁇ .

Landscapes

  • Pens And Brushes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)

Claims (10)

  1. Schreibinstrument mit
    - einem sich entlang einer Längsachse (Z) erstreckenden Schaft (12),
    - einer Patrone (18), die im Innern des Schafts (12), angeordnet ist und ein mit einer Schreibspitze (16) verbundenes vorderes Ende und ein hinteres Ende aufweist, und
    - einer Patronenstütze (20), die mit dem Schaft (12) verbunden ist und an der das hintere Ende der Patrone (18) anliegt,
    dadurch gekennzeichnet, dass die Stütze (20) der Patrone (18) eine Basis (26), die sich in einer im Wesentlichen quer zur Längsachse (Z) verlaufenden Ebene erstreckt, und mindestens drei Zapfen (28, 30, 32) aufweist, die sich von der Basis (26) allgemein entlang der Längsachse (Z) nach vorne erstrecken und jeweils eine auf die Längsachse (Z)ausgerichtete Innenfläche (28a, 30a, 32a) aufweisen, die mit dem Abschnitt der Längsachse, der sich von der Basis (26) zum vorderen Ende erstreckt, einen spitzen Winkel bildet, und zwischen denen die Patrone (18) verkeilt ist.
  2. Schreibinstrument nach dem vorhergehenden Anspruch, wobei die Innenflächen (28a, 30a, 32a) eben sind und mindestens einen Kreis zwischen ihnen definieren, der in einer quer zur Längsachse (Z) und vorzugsweise koaxial zur Basis (26) verlaufenden Ebene angeordnet ist.
  3. Schreibinstrument nach einem der vorhergehenden Ansprüche, wobei jeder Zapfen (28, 30, 32) eine radial nach außen ausgerichtete Außenfläche (28b, 30b, 32b) und mindestens eine Seitenfläche (28c, 30c, 32c) hat, die sich zwischen der Innenfläche (28a, 30a, 32a) und der Außenfläche (28b, 30b, 32b) erstreckt, wobei die Flächen aller Zapfen (28, 30, 32) so bezüglich einander angeordnet sind und jeweils eine derartige Form aufweisen, dass alle Zapfen (28, 30, 32) in einer radialen Richtung entformbar sind.
  4. Schreibinstrument nach Anspruch 3, mit drei Zapfen und wobei ein erster und ein zweiter Zapfen (28, 30) außerhalb eines spitzen Winkels (α), Verjüngungswinkel genannt, angeordnet sind, wobei der Winkel von zwei parallel zur Längsachse (Z) verlaufenden und sich außerhalb der Basis (26) schneidenden Ebenen (P1, P2) definiert wird und eine Spitze (S) hat, und wobei der dritte Zapfen (32) im Verjüngungswinkel (α) angeordnet ist.
  5. Schreibinstrument nach Anspruch 4, wobei der dritte Zapfen (32) zwei Seitenflächen (32c, 32d) hat, die einen Winkel bilden, dessen Spitze zur Spitze (S) des Verjüngungswinkels (α) gerichtet und näher an der Spitze (S) des Verjüngungswinkels (α) gelegen ist als der erste (28) und der zweite (30) Zapfen, wobei die Seitenfläche (28c) des ersten Zapfens und die Seitenfläche (30c) des zweiten Zapfens (30) vorzugsweise den Verjüngungswinkel (α) bilden.
  6. Schreibinstrument nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Zapfen (28, 30, 32) regelmäßig winkelförmig verteilt sind.
  7. Schreibinstrument nach einem der vorhergehenden Ansprüche, wobei die Patrone (18) die Stütze (20) über eine Feder (22) beaufschlagt.
  8. Schreibinstrument nach einem der vorhergehenden Ansprüche, wobei die Stütze (20) über einen Mechanismus zum Ausfahren und Einziehen der Schreibspitze mit dem Schaft (12) verbunden ist.
  9. Schreibinstrument nach dem vorhergehenden Anspruch, wobei der Mechanismus zum Ausfahren und Einziehen der Schreibspitze ein einstückig mit der Stütze (20) geformtes Teil ist.
  10. Verfahren zur Herstellung eines Schreibinstruments nach einem der Ansprüche 3 bis 9, dadurch gekennzeichnet, dass es einen Vorgang zum Formen der Patronenstütze (20) umfasst, bei dem man eine Form (36) aus zwei Teilen (38, 40) bereitstellt, bei denen es sich um Halbschalen handelt, wobei jeder Teil (38, 40) eine Passungsfläche (J) und Reliefs aufweist, die den Seitenflächen (28c, 30c, 32c, 32d) der Zapfen (28, 30, 32) entsprechen, und bei dem
    - die beiden Halbschalen (38, 40) gegen ihre Passungsfläche (J) festgeklemmt werden,
    - ein Kunststoff eingespritzt wird und
    - die Entformung vorgenommen wird, indem die beiden Halbschalen (38, 40) in der radialen Entformungsrichtung auseinandergenommen werden.
EP05798497A 2004-08-26 2005-08-22 Schreibinstrument mit patronenhalter Expired - Fee Related EP1827869B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0409117A FR2874533B1 (fr) 2004-08-26 2004-08-26 Instrument d'ecriture comportant un support de cartouche
PCT/FR2005/002118 WO2006024793A2 (fr) 2004-08-26 2005-08-22 Instrument d’ecriture comportant un support de cartouche

Publications (2)

Publication Number Publication Date
EP1827869A2 EP1827869A2 (de) 2007-09-05
EP1827869B1 true EP1827869B1 (de) 2008-04-30

Family

ID=34949853

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05798497A Expired - Fee Related EP1827869B1 (de) 2004-08-26 2005-08-22 Schreibinstrument mit patronenhalter

Country Status (9)

Country Link
US (1) US7934883B2 (de)
EP (1) EP1827869B1 (de)
CN (1) CN100480061C (de)
BR (1) BRPI0514595A (de)
CA (1) CA2577121A1 (de)
ES (1) ES2306232T3 (de)
FR (1) FR2874533B1 (de)
WO (1) WO2006024793A2 (de)
ZA (1) ZA200701487B (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110962489B (zh) * 2019-12-22 2020-10-27 杭州简弈科技有限公司 一种笔帽滑动笔
CN110936755B (zh) 2019-12-22 2020-10-09 杭州简弈科技有限公司 一种可拆滑动笔
USD953426S1 (en) * 2021-05-30 2022-05-31 Huiliang Luo Marker attachment

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR985249A (fr) * 1949-04-27 1951-07-16 Frazar France Perfectionnement aux porte-mines, stylographes, stylobilles et analogues
DE2854285A1 (de) * 1977-12-19 1979-06-28 Silvano Dolfi Schreibstift
EP0378724A1 (de) * 1989-01-19 1990-07-25 KOTOBUKI & CO., LTD. Mehrfachschreibgerät
DE3909377A1 (de) * 1989-03-22 1990-09-27 Merz & Krell Schreibgeraet
DE9114693U1 (de) * 1991-11-26 1992-10-22 Inform Plastik Gmbh, 4920 Lemgo, De
US6309121B1 (en) * 1998-11-05 2001-10-30 Suzuno Kasei Kabushiki Kaisha Stick-like cosmetic material feeding out vessel

Also Published As

Publication number Publication date
CN100480061C (zh) 2009-04-22
WO2006024793A2 (fr) 2006-03-09
US20070297847A1 (en) 2007-12-27
EP1827869A2 (de) 2007-09-05
BRPI0514595A (pt) 2008-06-17
FR2874533A1 (fr) 2006-03-03
ES2306232T3 (es) 2008-11-01
ZA200701487B (en) 2008-08-27
CA2577121A1 (fr) 2006-03-09
CN101010206A (zh) 2007-08-01
WO2006024793A3 (fr) 2006-06-01
US7934883B2 (en) 2011-05-03
FR2874533B1 (fr) 2006-12-01

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