EP0326716B1 - Instrument à dessiner comportant une pointe à écrire dont la face frontale détermine l'épaisseur de la ligne dessinée - Google Patents

Instrument à dessiner comportant une pointe à écrire dont la face frontale détermine l'épaisseur de la ligne dessinée Download PDF

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Publication number
EP0326716B1
EP0326716B1 EP88121920A EP88121920A EP0326716B1 EP 0326716 B1 EP0326716 B1 EP 0326716B1 EP 88121920 A EP88121920 A EP 88121920A EP 88121920 A EP88121920 A EP 88121920A EP 0326716 B1 EP0326716 B1 EP 0326716B1
Authority
EP
European Patent Office
Prior art keywords
writing
ball
face
implement
drawing implement
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 - Lifetime
Application number
EP88121920A
Other languages
German (de)
English (en)
Other versions
EP0326716A1 (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
Priority to AT88121920T priority Critical patent/ATE80837T1/de
Publication of EP0326716A1 publication Critical patent/EP0326716A1/fr
Application granted granted Critical
Publication of EP0326716B1 publication Critical patent/EP0326716B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K5/00—Pens with ink reservoirs in holders, e.g. fountain-pens
    • B43K5/18—Arrangements for feeding the ink to the nibs
    • B43K5/1818—Mechanical feeding means, e.g. valves; Pumps
    • B43K5/1827—Valves
    • B43K5/1836—Valves automatically closing
    • B43K5/1845—Valves automatically closing opened by actuation of the writing point

Definitions

  • the invention relates to a drawing device, in particular for numerically controlled drawing systems, with a drawing end, the end face of which determines the drawn line width of the drawing device and, when in use, has a capillary gap between itself and a writing or drawing medium, with a supply of writing medium to the drawing end and with one Rotating rolling element protruding from the end face of the character end.
  • Such a drawing device is known from GB-A-531 940.
  • a ball is embedded as a rolling element, which is pressed directly or indirectly by pressure springs from the inside against a ball seat and can release this ball seat for the flow of ink by pressing on the writing instrument.
  • the distance between the end face of the end of the drawing and a writing or drawing medium can have an alternating difference.
  • the solution according to the invention provides that the protrusion of the rolling element in a drawing device of the type mentioned in the introduction is dimensioned such that the capillary gap for the writing medium is formed between the writing or drawing support resting on the protruding end of the rolling body and the end face of the drawing end, the end face having grooves running from the inside to the outside with capillary cross-sectional dimensions.
  • the rotatable rolling element thus does not serve as part of a valve which must be mounted against spring force and must also be flexible in order to allow the writing fluid to escape to the end face. Rather, it has the task of preventing the end face of the end of the sign, which is used exclusively for applying the ink or writing fluid, from rubbing and being worn on the paper, the film or the like. At the same time, this ensures a constant, standard-compliant line width, even after prolonged use and heavy use of the drawing device. It is possible to dispense with the use of resistant and expensive materials at the end of the drawing and its end face, which reduces the manufacturing outlay as well as the avoidance of springs pressing the rolling elements against a locking seat.
  • the protrusion caused by the rolling element is very small and is expediently only a fraction of a millimeter, so that the capillary gap already mentioned is formed between the end face and the writing or drawing medium. This makes it possible to apply even, sharp-edged lines to difficult writing surfaces such as foils without disruptive interruptions.
  • the rotatability of the rolling element not only reduces the wear on this part which maintains the distance of the capillary gap, but rather also enables the drawing device to be easily guided over the writing or drawing medium when writing or drawing.
  • a single outlet for writing liquid is sufficient, because it runs through the grooves running from the inside to the outside with capillary cross-sectional dimensions is quickly pulled outwards onto the surface of the end face, which is advantageous for a certain width of the line to be produced.
  • the rolling element is designed as a ball and is preferably arranged centrally in the end face.
  • a rolling element designed as a ball only touches the writing or drawing surface in a punctiform manner and thus forms a largely continuous capillary gap in the area of the entire end surface of the drawing device.
  • a rotatable ball allows the drawing device to be moved easily and freely in any direction on the writing or drawing medium.
  • the central arrangement of the ball makes it easier to move the drawing device when writing or drawing with a capillary gap practically constant on each side of the end face and not to use it at an excessive angle.
  • the drawing device according to the invention with a rolling element designed as a ball has a certain similarity to conventional ballpoint pens. However, it differs significantly from these in its structure and mode of operation. While ballpoint pens usually encircle the writing ball with its outer flanged edge just below the great circle, in the drawing device according to the invention the ball protrudes only a fraction of a millimeter. The line width is determined by the face of the end of the character and not by the size of the writing ball and the possibly lower pressure force on this ball. While with a ballpoint pen a pasty writing medium is constantly transferred to a surface with the help of the writing ball, the capillary gap is essential for the writing function of the drawing device according to the invention.
  • Ballpoint pens and marking pens are also known, the writing ball of which is spring-loaded in the ballpoint pen tip and is arranged to be displaceable in the direction of the ballpoint pen axis.
  • Such pens or marker pens are described for example in DE-AS 12 09 912, DE-OS 25 59 158, US-PS 15 63 408 and FR-PS 950 038. They are intended to produce a variable stroke width depending on the pressure exerted on the writing ball, but they all also start from the basic principle of a conventional ballpoint pen, in which the expulsion and application of the writing medium to a writing surface is primarily due to the fact that ink, for example, is entrained by the writing ball - Rotation takes place.
  • the writing medium is at most brought to the writing ball by capillary forces, but not also to the writing or drawing medium.
  • the writing ball is designed to be movable in the direction of the ballpoint pen axis, the flanged edge surrounding it can possibly be brought up to a slight distance from the writing surface.
  • the flanged edge is not designed such that - as in the drawing device according to the invention - a capillary gap would form between an end face which determines the line width and the writing surface.
  • the arrangement of the writing ball which is displaceable in the direction of the ballpoint pen axis already stands in the way of this.
  • the ball consists of metal or hard metal.
  • a metal ball in particular if it is rotatable, it is practically not subject to wear.
  • a simple feeding of the writing medium to the end of the sign can consist in that the ball is supported in the end of the sign with a play that preferably forms capillary forces and is supported on the back in the area of the end of the sign opposite the end face by at least two holder-resistant, preferably web-shaped abutments, which the ball along a Touch small circle or point-like with their appropriately beveled contact surfaces.
  • the writing medium initially flows down from its reservoir into the area of the abutment. Since these are web-shaped, the writing medium can flow past them up to the upper area of the ball. Since the ball itself is supported with play, the writing medium can then continue to run between the ball and the end of the character that surrounds it up to the end face.
  • the play of the ball in the end of the drawing is expediently chosen to be so small that capillary forces also promote the flow of the writing medium up to the edge of the end face.
  • the abutments support the ball upwards and guarantee a constant capillary gap between the end face of the end of the sign and the writing or drawing support due to its holder-resistant design. At the same time, they secure the position of the ball in the direction of the longitudinal axis of the drawing device.
  • the ball in the drawing tip practically rubs only on the contact surfaces of the abutments; this creates a smooth line drawing.
  • the ball can be automatically centered in the longitudinal axis of the writing instrument during the writing process.
  • bevelled contact surfaces - in contrast to the contour of the sphere - reduce the direct contact area between the latter and the sphere and correspondingly reduce the frictional forces arising there.
  • both the drawing end and the ball from metal.
  • the manufacturing effort is reduced and the stability of the drawing device according to the invention is increased if at least the region of the drawing end surrounding the ball is made of preferably elastically expandable plastic.
  • the ball of the drawing device used rotates at very high speeds in the end of the drawing. If both the ball and the surrounding area of the drawing end are made of metal, there is basically the risk that the surfaces of the ball and the drawing end rubbing against each other will tend to "eat” as a result of the frictional heat that occurs and the drawing device will thus become unusable. This is avoided if the end of the sign is at least partially made of plastic.
  • elastically expandable plastic reduces the manufacturing outlay because the ball can simply be snapped into its mounting in the end of the drawing when the drawing device according to the invention is manufactured.
  • plastic as the material for the end of the sign does not have a disadvantage, since the ball serves as a spacer and the end face of the end of the sign itself does not come into contact with these media, or just does so.
  • the end of the drawing can also be in one piece and can be produced, for example, as a molded part. Only in the case of smaller line widths and correspondingly fine spheres is it expedient if the end of the drawing is of multiple parts and is preferably composed of two parts which can be plugged together and are rotationally symmetrical at their plug-in areas.
  • Both writing media serve simultaneously as lubricants for the ball that is stored in the end of the sign and rotates during the writing and drawing process.
  • a character end designated 1, of a writing and drawing device according to the invention.
  • a ball 2 serving as a spacer is rotatably mounted in the character end 1. It keeps an end face 3 of the character end 1 at a distance from a writing or drawing support 4 such that a capillary gap K can form between the writing or drawing support 4 and the end face 3.
  • the ball 2 is supported in the drawing tip 1 with play and is supported on the back by web-shaped abutments 5 which touch the ball with its beveled contact surfaces 6 along a small circle.
  • the Abutments 5 are arranged in a writing medium channel 7.
  • the writing medium - for example ink or ink - flows down in the writing medium channel 7 past the abutments 5 to the ball 2.
  • the lateral play of the ball 2 in the end of the drawing 1 allows the writing means to continue past the ball 2 to the end face 3.
  • the game between the ball 2 and the area of the character end 1 encompassing it is selected such that capillary forces also promote the flow of the writing medium towards the end face 3.
  • the writing means serves as a lubricant for the ball 2 rubbing during the writing or drawing process, particularly on the contact surfaces 6 of the abutment 5. While the ball 2 is made of metal, the drawing tip 1 in FIG. 1 consists essentially of solid plastic.
  • the line width of the drawing device is not determined by the ball 2, as in the case of a ballpoint pen, but rather by the end face 3 of the drawing tip 1. With a corresponding design of the end face 3, uniform, standard-compliant and sharp-edged lines can be drawn with the drawing device according to the invention.
  • the end face width B is exactly limited and can be adjusted to the desired line width.
  • the drawing device can also be used to write or draw on difficult writing or drawing media 4 - for example on foils - well and without disruptive interruptions. This is made possible by the capillary gap K between the end face 3 and the writing or drawing support 4, which is kept constant by means of the ball 2 supported on the back by the abutment 5.
  • Fig. 2 shows the drawing device 8 in a partial side sectional view.
  • a fibrous writing medium conductor 9 can be clearly seen. This leads ink or ink from a larger writing medium reservoir 10 behind it to the end of the character 1.
  • the writing medium reservoir 10 can likewise consist of a fibrous material or can also be designed as an ink cartridge.
  • the drawing device according to the invention can be used both for numerically controlled drawing systems and with the aid of a manual guide part for manual drawing. With a corresponding design, the drawing device can also be used, for example, to produce technical drawings by hand, mark stencils or write letters. Its design with a capillary gap and a rotatable ball serving as a spacer also allows use on difficult or abrasive writing or drawing media. Nevertheless, the manufacture of the drawing device according to the invention is possible with comparatively little effort.
  • Fig. 3 shows a two-part character end 1 ', which is composed essentially of a lower and upper parts 11a and 11b.
  • the parts 11a and 11b are pressed together at their rotationally symmetrical plug regions 12a and 12b during the manufacturing process of the character end 1 'and hold the ball 2 between them in their interior.
  • Such a design of the character tip 1 ' is particularly useful for fine balls, because a one-piece character tip could be difficult to form so that even a very fine ball can be snapped into it.
  • FIG. 4 shows, at the end of the drawing 1 ′′, other end face 3 ′, radial grooves 13 which run from the inside to the outside, as are also provided in the examples described above.
  • 4a shows the radial arrangement of these grooves 13 on the end face 3 ', which is associated with comparatively little manufacturing effort and is therefore preferred, and
  • FIG. 4b shows their arrangement and design in a lateral partial sectional view.
  • These grooves 13 are dimensioned so narrow in their cross-sectional dimensions, especially in their width, that they also act capillary. In this way, they draw the ink or ink faster outwards onto the surface of the end face 3 ', which is particularly advantageous when the tips of the characters are wider.
  • the grooves 13 could, however, also be designed, for example, to be open toward the outer edge or just to extend to the outer and / or inner edge of the end face 3 '.
  • the grooves 13 support the distribution of the ink or ink, which is sufficiently drawn in by the capillary gap K shown in FIG. 1, on the end face 3 or 3 'of the various exemplary embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pens And Brushes (AREA)
  • Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)

Claims (9)

  1. Instrument à dessiner, notamment pour des machines à dessiner à commande numérique, comportant une pointe à écrire (1,1',1") dont la face frontale (3,3') détermine l'épaisseur du trait de l'instrument et présente, en utilisation, une fente capillaire (K) entre elle et un support d'écriture ou de dessin (4), un moyen d'apport de fluide d'écriture à la pointe à écrire (1,1',1") et un corps roulant rotatif dépassant de la face frontale (3,3') de la pointe à écrire (1,1',1"), la partie en saillie du corps roulant étant dimensionnée de telle sorte que la fente capillaire (K) pour le fluide d'écriture est formée entre la face frontale (3,3') de la pointe à écrire (1,1',1") et le support d'écriture ou de dessin (4) appuyé contre l'extrémité de la partie en saillie du corps roulant, et la face frontale (3,3') présentant des rainures (13) s'étendant de l'intérieur vers l'extérieur, avec des dimensions de section à effet capillaire.
  2. Instrument à dessiner selon la revendication 1, caractérisé en ce que le corps roulant est réalisé sous la forme d'une bille (2) et disposé de préférence centralement dans la face frontale (3,3').
  3. Instrument à dessiner selon la revendication 2, caractérisé en ce que la bille (2) est réalisée en métal ou métal dur.
  4. Instrument à dessiner selon la revendication 2 ou 3, caractérisé en ce que la bille (2) est montée dans la pointe à écrire (1,1',1") avec un jeu constituant de préférence des forces capillaires et est soutenue du côté arrière, dans la région de la pointe à écrire (1,1',1") qui est opposée à la face frontale (3,3'), par au moins deux éléments de contre-appui fixes (5), de préférence en forme de nervures, qui entrent en contact avec la bille (2) le long d'un cercle réduit ou ponctuellement par leurs faces de contact (6) opportunément biseautées.
  5. Instrument à dessiner selon l'une des revendications 2 à 4, caractérisé en ce qu'au moins la région de la pointe à écrire (1,1',1") qui entoure la bille (2) est réalisée en matière plastique, de préférence élastiquement expansible.
  6. Instrument à dessiner selon l'une des revendications 2 à 5, caractérisé en ce que la pointe à écrire (1,1") est réalisée d'une pièce.
  7. Instrument à dessiner selon l'une des revendications 2 à 5, caractérisé en ce que la pointe à écrire (1') est réalisée en plusieurs parties et constituée de préférence de deux parties (11a,11b) pouvant être emboîtées l'une dans l'autre et à symétrie de révolution dans leurs régions d'emboîtement (12a,12b).
  8. Instrument à dessiner selon l'une des revendications 2 à 7, caractérisé en ce qu'un réservoir de fluide d'écriture (10), rempli d'encre ou d'encre de Chine, est prévu dans l'instrument à dessiner (8).
  9. Instrument à dessiner selon une ou plusieurs des revendications 2 à 8, caractérisé en ce que les rainures (13) s'étendant de l'intérieur vers l'extérieur sont disposées radialement.
EP88121920A 1988-01-30 1988-12-31 Instrument à dessiner comportant une pointe à écrire dont la face frontale détermine l'épaisseur de la ligne dessinée Expired - Lifetime EP0326716B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88121920T ATE80837T1 (de) 1988-01-30 1988-12-31 Zeichengeraet mit einer zeichenspitze, deren stirnflaeche die gezeichnete strichstaerke bestimmt.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3802746A DE3802746A1 (de) 1988-01-30 1988-01-30 Zeichengeraet mit einer zeichenspitze, deren stirnflaeche die gezeichnete strichstaerke bestimmt
DE3802746 1988-01-30

Publications (2)

Publication Number Publication Date
EP0326716A1 EP0326716A1 (fr) 1989-08-09
EP0326716B1 true EP0326716B1 (fr) 1992-09-23

Family

ID=6346291

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88121920A Expired - Lifetime EP0326716B1 (fr) 1988-01-30 1988-12-31 Instrument à dessiner comportant une pointe à écrire dont la face frontale détermine l'épaisseur de la ligne dessinée

Country Status (4)

Country Link
US (1) US4952089A (fr)
EP (1) EP0326716B1 (fr)
AT (1) ATE80837T1 (fr)
DE (2) DE3802746A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH05235388A (ja) * 1992-02-24 1993-09-10 Mitsubishi Electric Corp 低抵抗線状パターンの形成方法及び形成装置並びに太陽電池
WO1994000304A1 (fr) * 1992-06-26 1994-01-06 The Gillette Company Stylo a bille
CN104640712B (zh) * 2012-06-07 2016-09-28 三菱铅笔株式会社 圆珠笔
US9290036B2 (en) * 2013-03-14 2016-03-22 Crayola Llc Roller ball pen for use with metallic inks
JP6463069B2 (ja) * 2014-10-16 2019-01-30 三菱鉛筆株式会社 ボールペン

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US979843A (en) * 1910-03-17 1910-12-27 Alexander Herbert Grantham Writing implement.
GB531940A (en) * 1939-08-08 1941-01-14 John Peter Nissen Jr Implement for applying fluid and semi-paste materials
FR1058193A (fr) * 1952-06-10 1954-03-15 Pointe d'appareil scripteur à bille
US2700784A (en) * 1952-09-02 1955-02-01 Owens Illinois Glass Co Ball type liquid applicator and closure for same
US2851774A (en) * 1957-04-02 1958-09-16 Bronner Carl Marking instrument or scriber
US3025835A (en) * 1960-12-27 1962-03-20 Scripto Inc Steel ball for ball point pens and method for producing same
FR83271E (fr) * 1963-03-15 1964-07-17 Bille pour stylographe
US3215121A (en) * 1964-03-13 1965-11-02 Telautograph Corp Recorder ballpoint pen
US3336909A (en) * 1966-01-14 1967-08-22 Harvey E Diamond Variable-diameter pen nib
DE1511403A1 (de) * 1966-06-23 1969-06-19 Pelikan Werke Wagner Guenther Schreibgeraet mit Kapillarspalt
US3419335A (en) * 1968-01-12 1968-12-31 Dike Inc Drafting device
DE2205021A1 (de) * 1972-02-03 1973-08-09 Stefan Rogala Roehrchenschreiber zur erzeugung von verschieden breiten schriftbildern
US4145148A (en) * 1976-10-01 1979-03-20 Sakura Color Products Corporation Ball-point pen for a low-viscosity ink
US4195941A (en) * 1977-02-25 1980-04-01 Mark-Tex Corporation Marking pen writing tip
SE7807467L (sv) * 1977-07-07 1979-01-08 Albrecht Bruno Kg Stift for paforande av lim
US4198172A (en) * 1978-04-20 1980-04-15 Tri-Chem de Puerto Rico, Inc. Angled ball tip for viscous fluids
WO1986001067A1 (fr) * 1984-07-26 1986-02-13 Matsushita Electric Industrial Co., Ltd. Procede et dispositif de production de circuits a film epais
JPS6140279U (ja) * 1984-08-20 1986-03-14 株式会社 トンボ鉛筆 管状ペン
GB8514499D0 (en) * 1985-06-07 1985-07-10 Walker M Liquid applying means

Also Published As

Publication number Publication date
EP0326716A1 (fr) 1989-08-09
DE3802746A1 (de) 1989-08-03
US4952089A (en) 1990-08-28
ATE80837T1 (de) 1992-10-15
DE3874881D1 (de) 1992-10-29

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