EP0151771B1 - Writing utensil with removable cap - Google Patents

Writing utensil with removable cap Download PDF

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Publication number
EP0151771B1
EP0151771B1 EP84115800A EP84115800A EP0151771B1 EP 0151771 B1 EP0151771 B1 EP 0151771B1 EP 84115800 A EP84115800 A EP 84115800A EP 84115800 A EP84115800 A EP 84115800A EP 0151771 B1 EP0151771 B1 EP 0151771B1
Authority
EP
European Patent Office
Prior art keywords
insert
cap
implement according
writing implement
writing
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
Application number
EP84115800A
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German (de)
French (fr)
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EP0151771A2 (en
EP0151771A3 (en
Inventor
Christoph Manusch
Günter Scholz
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.)
Pelikan GmbH
Original Assignee
Pelikan 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
Priority claimed from DE8401449U external-priority patent/DE8401449U1/en
Application filed by Pelikan GmbH filed Critical Pelikan GmbH
Priority to AT84115800T priority Critical patent/ATE34944T1/en
Publication of EP0151771A2 publication Critical patent/EP0151771A2/en
Publication of EP0151771A3 publication Critical patent/EP0151771A3/en
Application granted granted Critical
Publication of EP0151771B1 publication Critical patent/EP0151771B1/en
Expired 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
    • B43K23/00—Holders or connectors for writing implements; Means for protecting the writing-points
    • B43K23/08—Protecting means, e.g. caps
    • B43K23/12—Protecting means, e.g. caps for pens
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F23/00—Advertising on or in specific articles, e.g. ashtrays, letter-boxes
    • G09F2023/0016—Advertising on or in specific articles, e.g. ashtrays, letter-boxes on pens

Definitions

  • the invention relates to a writing instrument with a removable cap covering the writing tip, which has an insert which is longitudinally displaceable between two stops in the cap and which, when the cap is placed on the writing tip holder (hereinafter referred to as writing tip) from a first to a second position is movable, which is indicated on the cap when the insert is in the second position.
  • a known writing instrument of this type US Pat. No. 2,808,670
  • the insert is formed by a cylindrical sleeve which is arranged by a in the cap Compression spring is pressed into the first position when the cap is removed from the writing instrument. In this position, the insert protrudes from the cap, thereby revealing a surface of the insert on which an image is arranged.
  • the insert When the cap is put on, the insert is pushed into the cap by a stop surface at the tip of the writing instrument, the compression spring being tensioned and the image surface being covered by the cap.
  • the cap is attached either frictionally or by means of a screw connection, which also absorbs the preload force of the compression spring.
  • the aim of this known cap is to make an image or another character visible when the cap is removed from the writing instrument in order to inspire the writer with this image or character when writing.
  • a reliable indication for the complete, tight seating of the cap on the writing tip is not achieved, since the image is already covered by the cap before the writing tip lies close to the base of the cap.
  • a protective cap for a fiber pen is known (DE-GM 74 21 165), which is transparent in its front area, in which the writing tip lies after being attached to the fiber pen.
  • the font color of the fiber pen is clearly recognizable from the outside, so that no special coloring of the protective cap is required.
  • the inside of the transparent part of the protective cap can easily be wetted with ink, so that the position of the writing tip within the protective cap cannot be reliably determined.
  • the invention has for its object to provide a writing instrument with a removable cap of the type mentioned, in which the user is reliably shown that the cap is correctly placed on the writing tip.
  • this object is achieved in that the insert with a blind hole can be frictionally clamped onto the writing tip, that the insert in the cap is held in the first position by a limit force lock, the limit force of which is greater when unlocking and smaller than when locking Clamping the insert on the writing tip to overcome friction.
  • the writing instrument according to the invention has the advantage that a signal is only displayed on the cap when the insert which closes the writing tip is pushed all the way onto the writing tip. This provides the user with a simple means by which he can reliably recognize whether he has pushed the cap far enough onto the writing tip.
  • the cap according to the invention is therefore particularly suitable for writing utensils such as fiber-tip pens which can easily dry out.
  • the cap preferably has a second limit force lock, by means of which the insert is held in the second position and whose limit force when unlocking is less than the friction force to be overcome when the insert is clamped on.
  • Both limit force locks are advantageously designed as a locking device.
  • a particularly simple embodiment of the locking mechanism is achieved in that a locking ring is fastened in the cap with spring tongues which span an annular collar on the insert and have locking surfaces in both positions of the insert with the respectively required limiting force of a corresponding slope.
  • Such a design of the limit force ratchet is very simple and allows the required limit force to be set with sufficient accuracy.
  • a further simplification of the cap according to the invention is achieved in that the spring tongues have stop surfaces at their ends which limit the end position of the insert in the first and / or the second position.
  • the insert preferably has a signaling pin on the side facing away from the writing instrument, which is only fully visible in the second position at the free end of the cap, while in the first position the signaling pin is still visible as far as possible remains that, when the cap is removed, it can also be used as a color coding.
  • the signaling pin can be designed so that in the second position of the insert it protrudes from an opening in the free end of the cap.
  • the protruding end of the signal pin can be protected by a basket surrounding the opening.
  • the cap consists of an opaque sleeve which is closed at the free end by a transparent hood through which the insert or the signal pin is visible in the second position.
  • This configuration has the advantage that the insert is arranged in a completely protected manner inside the cap and its mode of operation cannot be impaired from the outside.
  • an expedient development of this embodiment consists in that the locking ring rests with a collar on a step surface in the sleeve and is held there by the hood attached to the sleeve.
  • the insert advantageously has a scraper edge that slides resiliently on the inner wall of the sleeve. This achieves a jam-free guidance of the insert in the cap and prevents dirt from penetrating into the gap between the cap and the insert.
  • the display can also take place in that the cap has a window on the side in which the insert is only visible in the second position.
  • the illustrated cap 1 consists of an essentially cylindrical sleeve 2, which is closed at one end by a hood 3.
  • the sleeve 2 consists of an opaque and the hood 3 of a transparent material.
  • the locking ring 4 which is held with a collar 5 between a step surface 6 of the sleeve 2 and the hood 3.
  • the locking ring 4 has three spring tongues 7 which extend in the longitudinal direction of the sleeve 2 and which are separated from one another by slots 8.
  • the spring tongues 7 end approximately in the middle of the sleeve 2.
  • An insert 12 is also arranged in the sleeve 2, the length of which corresponds approximately to the length of the sleeve 2.
  • the insert 12 has in its end facing the open end of the sleeve 2 a blind hole 13 which serves to receive the writing tip 14 of a writing instrument 15.
  • the insert 12 is guided directly on the inner wall of the sleeve 2 with a scraper edge 16.
  • the opposite end of the insert 12 is designed as a signal pin 17 which is guided in the locking ring 4 so as to be displaceable.
  • the insert 12 has a frustoconical annular collar 18 with a step surface 19, a cylindrical surface 20 and a conical surface 21. Radial webs 22 lead from the conical surface 21 to the signal pin 17 and stiffen the part of the insert 12 constricted in this area.
  • the insert 12 By pulling off the cap 1 from the writing instrument 15, the insert 12 reaches its first position shown in FIG. 1.
  • the insert 12 extends approximately to the open end of the sleeve 2 and rests with its step surface 19 against the stop surfaces 11.
  • the spring tongues 7 rest on the cylinder surface 20 and the ramp surfaces 10 lie directly opposite the conical surface 21 and form a limit force lock, the limit force of which must be overcome when the insert 12 is pushed into the cap 1.
  • the insert 12 with the blind bore 13 is first pushed onto the fitting seat 23 of the writing instrument 15.
  • the friction that occurs between the blind bore 13 and the fitting seat surface 23 is smaller than the limit force caused by the ramp surfaces 10, so that the insert 12 can only be moved when the insert 12 is completely pushed onto the writing tip 14 and there is a stop. Only now does the full force with which the cap 1 is pushed onto the writing instrument 15 reach the limit force lock and there overcomes the radial tension force of the spring tongues 7.
  • the ramp surfaces 10 slide outwards on the conical surface 21, as a result of which the insert 12 enters the cap 1 slides in until a collar of the writing instrument 15 lies against the sleeve 2.
  • the signal plug 17 now almost completely fills the cavity of the hood 3, which can be seen from the outside through the transparent hood 3. The user of the writing instrument now knows that the cap completely closes the writing tip and drying of the writing instrument is avoided.
  • the signal pin 17 can be colored in a striking signal color, for example red. When using several writing instruments of different colors, it can also be useful to color the signal pin 17 in the writing color of the writing instrument.
  • the signal position of the insert 12 is shown in Fig. 2.
  • the cap 1 is held by a second counterforce, which is formed by the ramp surfaces 9.
  • the ramp surfaces 9 lie on the rounded edge between the cylinder surface 20 and the step surface 19 under the spring action of Spring tongues 7 on and thereby prevent the cap 1 from slipping back into the position shown in FIG. 1 with respect to the insert 12.
  • the insert 12 adheres to the blind bore 13 frictionally on the fitting seat surface 23 and is thus together with the cap 1 on Writing device 15 held. Since the limit force caused by the ramp surfaces 9 is less than the frictional force between the insert 12 and the writing tip 14, when the cap 1 is removed, the insert 12 is first pulled into the position shown in FIG. 1, in which it contacts the step surface 19 Stop surfaces 11 comes to rest.
  • the described cap is characterized by a high level of reliability, since the signal for the correct fitting of the cap only becomes visible when the insert protecting the writing tip is pushed on as far as it will go.
  • the cap is very easy to manufacture, since it is composed of only a few components and the design of the limit force lock allows the required limit forces to be determined so precisely without great manufacturing effort that fluctuations in the frictional force between the writing tip and the blind bore cannot impair the function.

Description

Schreibgerät mit einer abnehmbaren KappeWriting instrument with a removable cap

Die Erfindung bezieht sich auf ein Schreibgerät mit einer die Schreibspitze bedeckenden, abnehmbaren Kappe, die einen zwischen zwei Anschlägen in der Kappe längsverschieblichen Einsatz aufweist, der beim Aufsetzen der Kappe auf die Schreibspitzenfassung (im folgenden kurz Schreibspitze genannt) von einer ersten in eine zweite Stellung bewegbar ist, wobei es an der Kappe angezeigt wird, wenn der Einsatz sich in der zweiten Stellung befindet Bei einem bekannten Schreibgerät dieser Art (US-PS 2 808 670) ist der Einsatz durch eine zylindrische Hülse gebildet, die von einer in der Kappe angeordneten Druckfeder in die erste Stellung gedrückt wird, wenn die Kappe von dem Schreibgerät abgenommen ist. Der Einsatz ragt in dieser Stellung aus der Kappe heraus und gibt dadurch den Blick auf eine Fläche des Einsatzes frei, auf der ein Bild angeordnet ist. Beim Aufsetzen der Kappe wird der Einsatz von einer Anschlagfläche an der Spitze des Schreibgeräts in die Kappe hineingeschoben, wobei die Druckfeder gespannt und die Bildfläche von der Kappe bedeckt wird. Die Befestigung der Kappe erfolgt entweder reibschlüssig oder mittels einer Verschraubung, die auch die Vorspannkraft der Druckfeder aufnimmt. Ziel dieser bekannten Kappe ist es, ein Bild oder ein anderes Zeichen sichtbar zu machen, wenn die Kappe von dem Schreibgerät abgenommen ist, um den Schreiber mit diesem Bild oder Zeichen beim Schreiben zu inspirieren. Eine zuverlässige Anzeige für das vollständige, dichte Aufsitzen der Kappe auf der Schreibspitze wird dabei aber nicht erreicht, da das Bild bereits von der Kappe bedeckt ist, bevor die Schreibspitze dicht am Kappenboden anliegt.The invention relates to a writing instrument with a removable cap covering the writing tip, which has an insert which is longitudinally displaceable between two stops in the cap and which, when the cap is placed on the writing tip holder (hereinafter referred to as writing tip) from a first to a second position is movable, which is indicated on the cap when the insert is in the second position. In a known writing instrument of this type (US Pat. No. 2,808,670) the insert is formed by a cylindrical sleeve which is arranged by a in the cap Compression spring is pressed into the first position when the cap is removed from the writing instrument. In this position, the insert protrudes from the cap, thereby revealing a surface of the insert on which an image is arranged. When the cap is put on, the insert is pushed into the cap by a stop surface at the tip of the writing instrument, the compression spring being tensioned and the image surface being covered by the cap. The cap is attached either frictionally or by means of a screw connection, which also absorbs the preload force of the compression spring. The aim of this known cap is to make an image or another character visible when the cap is removed from the writing instrument in order to inspire the writer with this image or character when writing. However, a reliable indication for the complete, tight seating of the cap on the writing tip is not achieved, since the image is already covered by the cap before the writing tip lies close to the base of the cap.

Es ist weiterhin eine Schutzkappe für einen Faserschreiber bekannt (DE-GM 74 21 165), die in ihrem vorderen Bereich, in dem nach dem Aufstecken auf den Faserschreiber die Schreibspitze liegt, durchsichtig ausgebildet ist. Hierdurch ist die Schriftfarbe des Faserschreibers von außen gut erkennbar, so daß es keiner besonderen Einfärbung der Schutzkappe bedarf. Die Innenseite des durchsichtigen Teils der Schutzkappe kann bei dieser Ausführung leicht mit Schreibfarbe benetzt werden, so daß die Lage der Schreibspitze innerhalb der Schutzkappe nicht zuverlässig feststellbar ist.Furthermore, a protective cap for a fiber pen is known (DE-GM 74 21 165), which is transparent in its front area, in which the writing tip lies after being attached to the fiber pen. As a result, the font color of the fiber pen is clearly recognizable from the outside, so that no special coloring of the protective cap is required. In this embodiment, the inside of the transparent part of the protective cap can easily be wetted with ink, so that the position of the writing tip within the protective cap cannot be reliably determined.

Der Erfindung liegt die Aufgabe zugrunde, ein Schreibgerät mit einer abnehmbaren Kappe der eingangs genannten Art zu schaffen, bei dem dem Benutzer zuverlässig angezeigt wird, daß die Kappe richtig auf die Schreibspitze aufgesetzt ist.The invention has for its object to provide a writing instrument with a removable cap of the type mentioned, in which the user is reliably shown that the cap is correctly placed on the writing tip.

Erfindungsgemäß wird diese Aufgabe dadurch gelöst, daß der Einsatz mit einer Sackbohrung reibschlüssig auf die Schreibspitze aufklemmbar ist, daß der Einsatz in der Kappe in der ersten Stellung durch ein Grenzkraftgesperre gehalten wird, dessen Grenzkraft beim Entsperren größer und beim Sperren kleiner ist, als die beim Aufklemmen des Einsatzes auf die Schreibspitze zu überwindende Reibkraft.According to the invention, this object is achieved in that the insert with a blind hole can be frictionally clamped onto the writing tip, that the insert in the cap is held in the first position by a limit force lock, the limit force of which is greater when unlocking and smaller than when locking Clamping the insert on the writing tip to overcome friction.

Das erfindungsgemäße Schreibgerät hat den Vorteil, daß eine Signalanzeige an der Kappe nur dann erfolgt, wenn der die Schreibspitze verschließende Einsatz vollständig bis zum Anschlag auf die Schreibsp.itze aufgeschoben ist. Hierdurch wird dem Benutzer ein einfaches Mittel an die Hand gegeben, durch das er zuverlässig erkennen kann, ob er die Kappe weit genug auf die Schreibspitze aufgeschoben hat. Die erfindungsgemäße Kappe eigent sich somit besonders für Schreibgeräte wie Faserschreiber, die leicht eintrocknen können.The writing instrument according to the invention has the advantage that a signal is only displayed on the cap when the insert which closes the writing tip is pushed all the way onto the writing tip. This provides the user with a simple means by which he can reliably recognize whether he has pushed the cap far enough onto the writing tip. The cap according to the invention is therefore particularly suitable for writing utensils such as fiber-tip pens which can easily dry out.

In einer weiteren Ausgestaltung der Erfindung weist die Kappe vorzugsweise ein zweites Grenzkraftgesperre auf, durch das der Einsatz in der zweiten Stellung gehalten wird und dessen Grenzkraft beim Entsperren geringer ist als die beim Aufklemmen des Einsatzes zu überwindende Reibkraft. Diese Weiterbildung hat den Vorteil, daß die Kappe und der Einsatz in der zweiten Stellung mit der Grenzkraft des zweiten Grenzkraftgesperres aneinander festgehalten werden, so daß eine zusätzliche Lagesicherung der Kappe gegenüber dem Schreibgerät entfallen kann. Das Schreibgerät kann daher besonders einfach ausgestaltet sein und benötigt nur eine Paßsitzfläche für den Einsatz.In a further embodiment of the invention, the cap preferably has a second limit force lock, by means of which the insert is held in the second position and whose limit force when unlocking is less than the friction force to be overcome when the insert is clamped on. This development has the advantage that the cap and the insert are held together in the second position with the limit force of the second limit force lock, so that an additional positional securing of the cap relative to the writing instrument can be dispensed with. The writing instrument can therefore be designed in a particularly simple manner and only requires a fitting seat for use.

Beide Grenzkraftgesperre sind vorteilhaft als Rastgesperre ausgebildet. Eine besonders einfache Ausgestaltung der Rastgesperre wird dabei dadurch erreicht, daß in der Kappe ein Gesperrering mit Federzungen befestigt ist, die einen Ringbund am Einsatz umspannen und in beiden Stellungen des Einsatzes Rastflächen mit der jeweils erforderlichen Grenzkraft entsprechender Steigung aufweisen. Eine derartige Ausbildung der Grenzkraftgesperre ist sehr einfach und erlaubt eine ausreichend genaue Einstellung der jeweils erforderlichen Grenzkraft.Both limit force locks are advantageously designed as a locking device. A particularly simple embodiment of the locking mechanism is achieved in that a locking ring is fastened in the cap with spring tongues which span an annular collar on the insert and have locking surfaces in both positions of the insert with the respectively required limiting force of a corresponding slope. Such a design of the limit force ratchet is very simple and allows the required limit force to be set with sufficient accuracy.

Eine weitere Vereinfachung der erfindungsgemäßen Kappe wird dadurch erzielt, daß die Federzungen an ihren Enden Anschlagflächen aufweisen, die die Endlage des Einsatzes in der ersten und/oder der zweiten Stellung begrenzen.A further simplification of the cap according to the invention is achieved in that the spring tongues have stop surfaces at their ends which limit the end position of the insert in the first and / or the second position.

Zur Anzeige, daß die Kappe richtig aufgeschoben ist, weist der Einsatz vorzugsweise auf der dem Schreibgerät abgewandten Seite einen Signalzapfen auf, der nur in der zweiten Stellung an dem freien Ende der Kappe voll sichtbar ist, während in der ersten Stellung der Signalzapfen noch soweit sichtbar bleibt, daß er bei abgezogener Kappe zusätzlich als Farbcodierung genutzt werden kann, Hierzu kann der Signalzapfen so ausgebildet sein, daß er in der zweiten Stellung des Einsatzes aus einer Öffnung in dem freien Ende der Kappe herausragt.To indicate that the cap has been pushed on correctly, the insert preferably has a signaling pin on the side facing away from the writing instrument, which is only fully visible in the second position at the free end of the cap, while in the first position the signaling pin is still visible as far as possible remains that, when the cap is removed, it can also be used as a color coding. For this purpose, the signaling pin can be designed so that in the second position of the insert it protrudes from an opening in the free end of the cap.

Das herausragende Ende des Signalzapfens kann dabei durch einen die Öffnung umgebenden Korb geschützt sein.The protruding end of the signal pin can be protected by a basket surrounding the opening.

Eine andere vorteilhafte Ausgestaltung der Erfingung besteht darin, daß die Kappe aus einer undurchsichtigen Hülse besteht, die an dem freien Ende durch eine durchsichtige Haube verschlossen ist, durch die der Einsatz oder der Signalzapfen in der zweiten Stellung sichtbar ist. Diese Ausgestaltung hat den Vorteil, daß der Einsatz vollkommen geschützt im Inneren der Kappe angeordnet ist und seine Wirkungsweise von außen nicht beeinträchtigt werden kann. Eine zweckmäßige Weiterbildung dieser Ausgestaltung besteht erfingungsgemäß darin, daß der Gesperrering mit einem Bund an einer Stufenfläche in der Hülse anliegt und dort von der an der Hülse befestigten Haube gehalten wird. An seinem offenen Ende weist der Einsatz vorteilhaft eine Abstreifkante auf, die federnd an der Innenwand der Hülse gleitet. Hierdurch wird eine verklemmfreie Führung des Einsatzes in der Kappe erreicht und das Eindringen von Schmutz in den Spalt zwischen der Kappe und dem Einsatz vermieden.Another advantageous embodiment of the invention is that the cap consists of an opaque sleeve which is closed at the free end by a transparent hood through which the insert or the signal pin is visible in the second position. This configuration has the advantage that the insert is arranged in a completely protected manner inside the cap and its mode of operation cannot be impaired from the outside. According to the invention, an expedient development of this embodiment consists in that the locking ring rests with a collar on a step surface in the sleeve and is held there by the hood attached to the sleeve. At its open end, the insert advantageously has a scraper edge that slides resiliently on the inner wall of the sleeve. This achieves a jam-free guidance of the insert in the cap and prevents dirt from penetrating into the gap between the cap and the insert.

Die Anzeige kann nach einem weiteren Vorschlag der Erfindung auch dadurch erfolgen, daß die Kappe seitlich ein Fenster hat, in dem nur in der zweiten Stellung der Einsatz sichtbar ist.According to a further proposal of the invention, the display can also take place in that the cap has a window on the side in which the insert is only visible in the second position.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels, das in der Zeichnung dargestellt ist. Es zeigen

  • Fig. 1 einen Längsschnitt durch eine von einem Schreibgerät abgenommene Kappe,
  • Fig. 2 einen Längsschnitt durch die auf ein Schreibgerät aufgesetzte Kappe gemäß Fig. 1 und
  • Fig. 3 einen Längsschnitt durch den Gesperrering der Kappe gemäß Fig. 1.
Further features and advantages of the invention result from the following description of a preferred exemplary embodiment, which is shown in the drawing. Show it
  • 1 shows a longitudinal section through a cap removed from a writing instrument,
  • Fig. 2 shows a longitudinal section through the cap placed on a writing instrument according to Fig. 1 and
  • 3 shows a longitudinal section through the locking ring of the cap according to FIG. 1.

Die dargestellte Kappe 1 besteht aus einer im wesentlichen zylindrischen Hülse 2, die an einem Ende durch ein Haube 3 verschlossen ist. Die Hülse 2 besteht aus einem undurchsichtigen und die Haube 3 aus einem durchsichtigen Werkstoff. In der Hülse 2 befindet sich ein Gesperrering 4, der mit einem Bund 5 zwischen einer Stufenfläche 6 der Hülse 2 und der Haube 3 gehalten ist. Der Gesperrering 4 weist drei sich in Längsrichtung der Hülse 2 sich erstreckende Federzungen 7 auf, die durch Schlitze 8 voneinander getrennt sind. An den Innenflächen der Federzungen 7 sind flache Rampenflächen 9 und diesen entgegengerichtete steile Rampenflächen 10 und im Abstand von den Rampenflächen 10 zum Zungenende hin Anschlagflächen 11 ausgebildet. Die Federzungen 7 enden etwa in der Mitte der Hülse 2.The illustrated cap 1 consists of an essentially cylindrical sleeve 2, which is closed at one end by a hood 3. The sleeve 2 consists of an opaque and the hood 3 of a transparent material. In the sleeve 2 there is a locking ring 4 which is held with a collar 5 between a step surface 6 of the sleeve 2 and the hood 3. The locking ring 4 has three spring tongues 7 which extend in the longitudinal direction of the sleeve 2 and which are separated from one another by slots 8. On the inner surfaces of the spring tongues 7, flat ramp surfaces 9 and steep ramp surfaces 10 opposing them, and at a distance from the ramp surfaces 10 towards the tongue end, stop surfaces 11 are formed. The spring tongues 7 end approximately in the middle of the sleeve 2.

In der Hülse 2 ist weiterhin ein Einsatz 12 angeordnet, dessen Länge etwa der Länge der Hülse 2 entspricht. Der Einsatz 12 weist in seinem dem offenen Ende der Hülse 2 zugewandten Ende eine Sackbohrung 13 auf, die zur Aufnahme der Schreibspitze 14 eines Schreibgeräts 15 dient. Mit einer Abstreifkante 16 ist der Einsatz 12 unmittelbar an der Innenwand der Hülse 2 geführt. Das entgegengesetzte Ende des Einsatzes 12 ist als Signalzapfen 17 ausgebildet, der in dem Gesperrering 4 verschiebbar geführt ist. In der Mitte weist der Einsatz 12 einen kegelstumpfförmigen Ringbund 18 mit einer Stufenfläche 19, einer Zylinderfläche 20 und einer Kegelfläche 21 auf. Radiale Stege 22 führen von der Kegelfläche 21 zum Signalzapfen 17 und versteifen den in diesem Bereich eingeschnürten Teil des Einsatzes 12.An insert 12 is also arranged in the sleeve 2, the length of which corresponds approximately to the length of the sleeve 2. The insert 12 has in its end facing the open end of the sleeve 2 a blind hole 13 which serves to receive the writing tip 14 of a writing instrument 15. The insert 12 is guided directly on the inner wall of the sleeve 2 with a scraper edge 16. The opposite end of the insert 12 is designed as a signal pin 17 which is guided in the locking ring 4 so as to be displaceable. In the middle, the insert 12 has a frustoconical annular collar 18 with a step surface 19, a cylindrical surface 20 and a conical surface 21. Radial webs 22 lead from the conical surface 21 to the signal pin 17 and stiffen the part of the insert 12 constricted in this area.

Durch das Abziehen der Kappe 1 von dem Schreibgerät 15 gelangt der Einsatz 12 in seine in Fig. 1 dargestellte erste Stellung. Hierbei erstreckt sich der Einsatz 12 etwa bis zum offenen Ende der Hülse 2 und liegt mit seiner Stufenfläche 19 an den Anschlagflächen 11 an. Die Federzungen 7 ruhen dabei auf der Zylinderfläche 20 und die Rampenflächen 10 liegen der Kegelfläche 21 unmittelbar gegenüber und bilden ein Grenzkraftgesperre, dessen Grenzkraft beim Hineinschieben des Einsatzes 12 in die Kappe 1 überwunden werden muß.By pulling off the cap 1 from the writing instrument 15, the insert 12 reaches its first position shown in FIG. 1. Here, the insert 12 extends approximately to the open end of the sleeve 2 and rests with its step surface 19 against the stop surfaces 11. The spring tongues 7 rest on the cylinder surface 20 and the ramp surfaces 10 lie directly opposite the conical surface 21 and form a limit force lock, the limit force of which must be overcome when the insert 12 is pushed into the cap 1.

Wird die Kappe 1 auf die Schreibspitze 14 des Schreibgeräts 15 aufgesetzt, so wird zunächst der Einsatz 12 mit der Sackbohrung 13 auf die Paßsitzfläche 23 des Schreibgeräts 15 aufgeschoben. Die dabei zwischen Sackbohrung 13 und Paßsitzfläche 23 auftretende Reibung ist kleiner als die durch die Rampenflächen 10 hervorgerufene Grenzkraft, so daß ein Verschieben des Einsatzes 12 erst erfolgen kann, wenn der Einsatz 12 vollständig auf die Schreibspitze 14 aufgeschoben ist und dort einen Anschlag findet. Nun erst gelangt die volle Kraft, mit der die Kappe 1 auf das Schreibgerät 15 aufgeschoben wird an das Grenzkraftgesperre und überwindet dort die radiale Spannkraft der Federzungen 7. Die Rampenflächen 10 gleiten an der Kegelfläche 21 nach außen ab, wodruch der Einsatz 12 in die Kappe 1 hineingleitet, bis ein Bund des Schreibgeräts 15 an der Hülse 2 anliegt. Der Signalzapfen 17 füllt nun den Hohlraum der Haube 3 nahezu vollständig aus, was durch die durchsichtige Haube 3 von außen gut zu sehen ist. Der Benutzer des Schreibgeräts weiß nun, daß die Kappe die Schreibspitze vollständig verschließt und ein Austrocknen des Schreibgeräts vermieden ist.If the cap 1 is placed on the writing tip 14 of the writing instrument 15, the insert 12 with the blind bore 13 is first pushed onto the fitting seat 23 of the writing instrument 15. The friction that occurs between the blind bore 13 and the fitting seat surface 23 is smaller than the limit force caused by the ramp surfaces 10, so that the insert 12 can only be moved when the insert 12 is completely pushed onto the writing tip 14 and there is a stop. Only now does the full force with which the cap 1 is pushed onto the writing instrument 15 reach the limit force lock and there overcomes the radial tension force of the spring tongues 7. The ramp surfaces 10 slide outwards on the conical surface 21, as a result of which the insert 12 enters the cap 1 slides in until a collar of the writing instrument 15 lies against the sleeve 2. The signal plug 17 now almost completely fills the cavity of the hood 3, which can be seen from the outside through the transparent hood 3. The user of the writing instrument now knows that the cap completely closes the writing tip and drying of the writing instrument is avoided.

Um eine deutliche Anzeige zu erzielen, kann der Signalzapfen 17 in einer auffälligen Signalfarbe, beispielsweise rot, gefärbt sein. Bei Verwendung mehrerer Schreibgeräte unterschiedlicher Farbe kann es aber auch zweckmäßig sein, den Signalzapfen 17 in der Schreibfarbe des Schreibgeräts zu färben.In order to achieve a clear display, the signal pin 17 can be colored in a striking signal color, for example red. When using several writing instruments of different colors, it can also be useful to color the signal pin 17 in the writing color of the writing instrument.

Die Signalstellung des Einsatzes 12 ist in Fig. 2 dargestellt. In dieser Lage wird die Kappe 1 durch ein zweites Gegenkraftgesperre gehalten, das durch die Rampenflächen 9 gebildet wird. Die Rampenflächen 9 liegen an der gerundeten Kante zwischen der Zylinderfläche 20 und der Stufenfläche 19 unter der Federwirkung der Federzungen 7 an und verhindern dadurch ein Zurückrutschen der Kappe 1 in die in Fig. 1 dargestellte Lage in Bezug auf den Einsatz 12. Der Einsatz 12 haftet mit der Sackbohrung 13 reibschlüssig auf der Paßsitzfläche 23 und wird auf diese Weise zusammen mit der Kappe 1 am Schreibgerät 15 festgehalten. Da die von den Rampenflächen 9 hervorgerufene Grenzkraft geringer ist als die Reibkraft zwischen dem Einsatz 12 und der Schreibspitze 14 wird beim Abziehen der Kappe 1 der Einsatz 12 zunächst in die in Fig. 1 dargestellte Lage gezogen, in der er mit der Stufenfläche 19 an den Anschlagflächen 11 zur Anlage kommt. Erst jetzt kann die volle Abziehkraft über die Federzungen 7 auf den Einsatz 12 übertragen und die Kappe 1 von dem Schreibgerät 15 abgezogen werden. Hierdurch ist sichergestellt, daß der Einsatz 12 beim Abnehmen der Kappe immer wieder in die in Fig. 1 gezeigte erste Stellung gelangt, in der der Signalzapfen 17 in der Haube 3 nicht mehr - oder in Farbcodierungsfunktion noch gerade- sichtbar ist.The signal position of the insert 12 is shown in Fig. 2. In this position, the cap 1 is held by a second counterforce, which is formed by the ramp surfaces 9. The ramp surfaces 9 lie on the rounded edge between the cylinder surface 20 and the step surface 19 under the spring action of Spring tongues 7 on and thereby prevent the cap 1 from slipping back into the position shown in FIG. 1 with respect to the insert 12. The insert 12 adheres to the blind bore 13 frictionally on the fitting seat surface 23 and is thus together with the cap 1 on Writing device 15 held. Since the limit force caused by the ramp surfaces 9 is less than the frictional force between the insert 12 and the writing tip 14, when the cap 1 is removed, the insert 12 is first pulled into the position shown in FIG. 1, in which it contacts the step surface 19 Stop surfaces 11 comes to rest. Only now can the full pulling force be transferred to the insert 12 via the spring tongues 7 and the cap 1 can be pulled off the writing instrument 15. This ensures that when the cap is removed, the insert 12 always returns to the first position shown in FIG. 1, in which the signal pin 17 in the hood 3 is no longer visible - or is still just visible in the color coding function.

Die beschriebene Kappe zeichnet sich durch eine große Zuverlässigkeit aus, da das Signal für das richtige Aufsetzen der Kappe erst sichtbar wird, wenn der die Schreibspitze schützende Einsatz bis zum Anschlag aufgeschoben ist. Die Kappe ist sehr einfach herzustellen, da sie nur aus wenigen Bauteilen zusammengesetzt ist und die Ausbildung der Grenzkraftgesperre erlaubt ohne großen Fertigungsaufwand eine so genaue Festlegung der erforderlichen Grenzkräfte, daß Schwankungen der Reibkraft zwischen Schreibspitze und Sackbohrung nicht zu einer Beeinträchtigung der Funktion führen können.The described cap is characterized by a high level of reliability, since the signal for the correct fitting of the cap only becomes visible when the insert protecting the writing tip is pushed on as far as it will go. The cap is very easy to manufacture, since it is composed of only a few components and the design of the limit force lock allows the required limit forces to be determined so precisely without great manufacturing effort that fluctuations in the frictional force between the writing tip and the blind bore cannot impair the function.

Claims (11)

1. A writing implement having a removable cap (1) covering the writing tip (14), which cap comprises an insert (12) which is longitudinally displaceable in the cap between two stops (9, 11) and which is movable from a first position into a second position in the setting of the cap upon the writing tip, there being an indication on the cap when the insert is situated in the second position, characterised in that the insert (12) can be clamped with a blind bore (13) in frictional engagement on the writing tip (14), [and] that the insert is held in the cap (1) in the first position by a limit-force catch (7, 1°, 21) the limit force of which is greater in releasing and less in locking than the friction force to be overcome in the clamping of the insert on to the writing tip.
2. A writing implement according to Claim 1, characterised in that the cap (1) comprises a second limit-force catch (7, 9, 18) by which the insert (12) is held in the second position and the limit force of which, in releasing, is less than the friction force to be overcome in the clamping-on of the insert.
3. A writing implement according to Claim 1 or 2, characterised in that the limit-force catch is formed as a detent catch.
4. A writing implement according to Claim 3, characterised in that in the cap (1) there is secured a catch ring (4) with spring tongues (7) which grasp around an annular collar (18) on the insert (12) and which in both positions of the insert comprise detent faces (9, 10) with a slope corresponding to the limit force necessary in each case.
5. A writing implement according to Claim 4, characterised in that the spring tongues (7) have stop faces (11) on their ends which limit the end position of the insert in the first and/or second position.
6. A writing implement according to any preceding Claim, characterised in that the insert (12) comprises an indicator peg (17) which is fully visible on the free end of the cap (1) only in the second position.
7. A writing implement according to Claim 6, characterised in that the indicator peg (17), when the insert (12) is in the second position, protrudes from an opening in the free end of the cap (1).
8. A writing implement according to Claim 7, characterised in that the protruding end of the indicator peg (17) is protected by a cage surrounding the opening.
9. A writing implement according to any one of Claims 1 to 6, characterised in that the cap (1) comprises an opaque sleeve (2) which is closed at the free end with a transparent hood (3) through which the insert (12) or the indicator peg (17) is fully visible in the second position or still just visible in the first position.
10. A writing implement according to Claim 9, characterised in that the catch ring (4) rests with a collar (5) on a step face (6) in the sleeve (2) and is held there by the hood (3) secured to the sleeve.
11. A writing implement according to any preceding Claim, characterised in that the cap (1) laterally has a window in which the insert (12) is visible only in the second position.
EP84115800A 1984-01-19 1984-12-19 Writing utensil with removable cap Expired EP0151771B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84115800T ATE34944T1 (en) 1984-01-19 1984-12-19 WRITING INSTRUMENT WITH DETACHABLE CAP.

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE3401739 1984-01-19
DE3401739A DE3401739C2 (en) 1984-01-19 1984-01-19 Pen cap
DE8401449U DE8401449U1 (en) 1984-01-19 1984-01-19 Writing instrument with a removable cap

Publications (3)

Publication Number Publication Date
EP0151771A2 EP0151771A2 (en) 1985-08-21
EP0151771A3 EP0151771A3 (en) 1986-08-06
EP0151771B1 true EP0151771B1 (en) 1988-06-08

Family

ID=25817705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84115800A Expired EP0151771B1 (en) 1984-01-19 1984-12-19 Writing utensil with removable cap

Country Status (3)

Country Link
US (1) US4627757A (en)
EP (1) EP0151771B1 (en)
DE (1) DE3401739C2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3516093A1 (en) * 1985-05-04 1986-11-06 Pelikan Ag, 3000 Hannover Writing instrument
DE3538077C1 (en) * 1985-10-25 1986-12-18 Pelikan Ag, 3000 Hannover Pen with cap
US4917522A (en) * 1988-05-17 1990-04-17 Photofinish Cosmetics, Inc. Manually-operated fluid dispenser and associated closure cap
DE3920773A1 (en) * 1988-12-07 1990-06-13 Pelikan Ag CARTRIDGE FILLER
US5066156A (en) * 1990-03-19 1991-11-19 The Gillette Company Writing instrument cap
US5975783A (en) * 1998-08-19 1999-11-02 Pro Eton Corporation Pen cap with pressure relief means
JP3662447B2 (en) * 1999-03-15 2005-06-22 壽印刷紙工株式会社 Liquid container cap
US6675689B2 (en) * 2001-02-26 2004-01-13 The Antioch Company Circular blade unit
CN102963161A (en) * 2012-12-07 2013-03-13 杨珂 Pen cap with elastic grabbers

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Publication number Priority date Publication date Assignee Title
GB595461A (en) * 1945-02-01 1947-12-05 Serafin Garcia Lopez Improvements in or relating to caps of mechanical pencils or pen and pencil combinations
US969198A (en) * 1909-04-09 1910-09-06 Sanford & Bennett Company Reservoir-pen.
US1838543A (en) * 1928-05-17 1931-12-29 Aaron A Goldstein Fountain pen and the like
DE668620C (en) * 1935-07-13 1938-12-07 Jaroslav Zahel Closing cap with pocket clip for fountain pen
US2339514A (en) * 1941-06-06 1944-01-18 Eagle Pencil Company Inc Indicating device for mechanical pencils
US2396771A (en) 1944-08-03 1946-03-19 Sr Dara H Brinson Fountain pen
US2453491A (en) * 1944-11-29 1948-11-09 Carl J Cardin Fountain pen
US2396866A (en) * 1944-12-09 1946-03-19 Margaret Carpenter Lytton Cap fastening means for fountain pens
GB631195A (en) * 1946-01-25 1949-10-28 Jesus Plaza Rodriguez Improvements in and relating to the construction of safety-caps for fountain pens
GB619349A (en) * 1946-12-04 1949-03-08 Wyvern Fountain Pen Company Lt Improvements in or relating to fountain pens
CH321717A (en) 1951-08-16 1957-05-15 Katz Armin Device, in particular writing implement, with two parts, one of which forms a sleeve that can be attached and removed at at least one point in the other part
GB1051115A (en) * 1964-01-07
US3565540A (en) * 1968-05-22 1971-02-23 Maurice Andrews Fountain brush assemblies
DE2138694A1 (en) 1971-08-03 1973-02-15 Staedtler Fa J S LOCKING CAP FOR WRITING DEVICES
DE7202274U (en) 1972-01-22 1972-04-20 Fa Js Staedtler Indian ink pen with attachable cap
US3802788A (en) * 1972-07-13 1974-04-09 Koh I Noor Rapidograph Stylographic pen cap
DE7421165U (en) 1974-06-21 1974-09-26 Ritter J Kg Fiber pen

Also Published As

Publication number Publication date
EP0151771A2 (en) 1985-08-21
US4627757A (en) 1986-12-09
DE3401739A1 (en) 1985-08-01
EP0151771A3 (en) 1986-08-06
DE3401739C2 (en) 1986-12-18

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