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EP0292755B1 - Cap for a writing instrument - Google Patents

Cap for a writing instrument Download PDF

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Publication number
EP0292755B1
EP0292755B1 EP88107262A EP88107262A EP0292755B1 EP 0292755 B1 EP0292755 B1 EP 0292755B1 EP 88107262 A EP88107262 A EP 88107262A EP 88107262 A EP88107262 A EP 88107262A EP 0292755 B1 EP0292755 B1 EP 0292755B1
Authority
EP
European Patent Office
Prior art keywords
cap
sleeve
connecting element
inner sleeve
clip
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
EP88107262A
Other languages
German (de)
French (fr)
Other versions
EP0292755A1 (en
Inventor
Bruno Künzler
Wilhelm Schlink
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 PBS Produktions GmbH and Co KG
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
Application filed by Pelikan GmbH filed Critical Pelikan GmbH
Priority to AT88107262T priority Critical patent/ATE67450T1/en
Publication of EP0292755A1 publication Critical patent/EP0292755A1/en
Application granted granted Critical
Publication of EP0292755B1 publication Critical patent/EP0292755B1/en
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
    • B43K25/00—Attaching writing implements to wearing apparel or objects involving constructional changes of the implements
    • B43K25/02—Clips
    • B43K25/022—Clips attached to a pen cap

Definitions

  • the invention relates to a closure cap for a hand-held writing instrument, consisting of an outer cap sleeve, an inner sleeve arranged inside the cap sleeve, a closure on the outside of the cap sleeve and the inner sleeve with two interlocking parts, through which the cap sleeve, the inner sleeve and the clip are connected to one another, the closure having a connecting element which can be inserted from the outside into the cap sleeve and the inner sleeve, in the outer surface of which an annular groove is provided, into which a bead engages at the end of the inner sleeve.
  • a closure cap of this type is known from prior public use.
  • the bead of the inner sleeve is not sufficiently secured against loosening from the connecting element.
  • the closure at the end of the cap sleeve consists of a closure piece which can be fitted from the outside onto the end of the cap sleeve and which has a shaft protruding into the cap sleeve which has the fastening ear of the clip and a radial collar on Reaches through the end of the inner sleeve.
  • the shaft is held by a locking ring which is inserted into the inner sleeve and has an inner recess which snaps into an undercut in the shaft.
  • a closure cap is also known (DE-GM 73 14 439), in which the clip is held at the end of the cap sleeve by a clip screw which can be screwed into a threaded attachment at the end of the inner cap. This means that a separate clip nut on the inside of the cap sleeve can be omitted.
  • this known closure cap it is disadvantageous that the production of the inner cap is expensive in terms of injection molding, since the cap base required in the injection mold for sealing purposes makes a free-standing core necessary.
  • the assembly of the known closure cap is also not so simple because the inner cap must be secured against twisting with the aid of a special tool which engages in recesses in the cap base.
  • the connecting element can be inserted from the inside into the cap sleeve and the inner sleeve.
  • the invention has for its object to provide a cap of the type mentioned, which consists of easy to manufacture parts, can be easily assembled with the help of automatic devices and in which the snap connection between the inner sleeve and the connecting element is additionally secured against loosening.
  • the end of the inner sleeve has a constriction and that an inwardly projecting ring collar is provided in the bore of the cap sleeve, which is opposite the constriction and prevents the inner sleeve from radial expansion and which through a conical surface to the Hole wall is connected.
  • the closure cap according to the invention is characterized by a number of advantages. So the assembly of the cap is particularly easy, since only the inner sleeve in the Cap sleeve is inserted and the remaining parts can be mounted from the outside. Since the connecting element snaps directly into the inner sleeve, it is sufficient during assembly if the inner sleeve is supported accordingly. The snap connection between the inner sleeve and the connecting element continues to create a good seal, since the constriction the inner sleeve rests due to its elasticity with radial tension on the wall surfaces of the annular groove of the fastener.
  • the direct engagement of the connecting element in the inner sleeve results in a relatively large diameter for the latching connection, which ensures good absorption of the forces when the clip is springed.
  • the components of the closure cap according to the invention are easy to manufacture by injection molding. In particular in the manufacture of the cap sleeve and inner sleeve, it is advantageous that the injection mold can have a continuous core.
  • the outwardly open bore of the connecting element of the closure cap according to the invention can serve in an advantageous embodiment for fastening a cap head which surrounds the connecting element from the outside.
  • the connecting element is therefore not visible from the outside and can therefore be used for numerous caps of different colors.
  • the attachment of the cap head in the bore of the connecting element is simple and leaves the shape of the cap head free.
  • the connecting element is formed in one piece with the clip.
  • the connecting element and clip ear are then fused into one component, which further reduces the number of parts and simplifies assembly accordingly.
  • the constriction of the inner sleeve rests against an obtuse-angled conical surface of the connecting element that tapers in the mounting direction.
  • This is a tolerance compensation achieved, since the constriction of the inner sleeve has the tendency to move by contraction on the conical surface until the cap sleeve and, if applicable, the fastening ear of the clip rest against the connecting element in the axial direction without play.
  • a good seal between the connecting element and the inner sleeve is achieved by this configuration.
  • An anti-rotation device between the connecting element and the cap sleeve, which is required for securing the clip in position, can advantageously be achieved according to the invention in that a cylindrical region of the connecting element, which engages in a bore section of the cap sleeve, is provided with longitudinal ribs which are in longitudinal grooves in the wall of the bore section.
  • the number of longitudinal grooves can be a multiple of the number of longitudinal ribs.
  • the anti-rotation of the clip relative to the connecting element can also be achieved with the aid of the longitudinal ribs by engaging in grooves which are provided in the bore in the fastening ear of the clip.
  • the cap 1 of a fountain pen shown in Fig. 1 consists of an outer cap sleeve 2, in which there is an inner sleeve 3 made of an elastic plastic, which is provided with locking lugs 4 for holding the cap 1 on the writing tip of the fountain pen.
  • the cap sleeve 2 and the inner sleeve 3 are closed at one end by a connecting element 5 which connects the two parts and a clip 6 arranged on the outside of the cap sleeve 2.
  • the clip 6 is made of metal and is provided with a fastening tube 7 bent at a right angle, which bears from the outside against the end face at the end of the cap sleeve 2 and is matched with its outside diameter to the outside diameter of the cap sleeve 2.
  • the end face at the end of the cap sleeve 2 is formed by a radially inwardly directed collar 8, against which the inner sleeve 3 bears in the axial direction from the inside.
  • the connecting element 5 consists of a substantially cylindrical body, with a central blind hole 9, whose opening is directed outwards.
  • the outer surface of the connecting element 5 consists of a central, cylindrical section 10, to which an annular collar 11 with a larger diameter than the section adjoins and an annular groove 12 to the inside.
  • the section 10, as shown in FIG. 3, is provided with longitudinal ribs 13 which engage in longitudinal notches 14 in the bores in the fastening ear 7 and in the collar 8 and secure these parts against mutual rotation.
  • the number of longitudinal notches 14 is a multiple of the number of longitudinal ribs 13 in order to facilitate the insertion of the connecting element 5 into the fastening ear 7 and the collar 8.
  • the connecting element 5 presses the fastening ear 7 with its ring collar 11 against the end face of the cap sleeve 2, so that the clip 6 is positively connected to the cap sleeve 2 in each direction.
  • the connecting element 5 is held by an elastically deformable constriction 15 at the end of the inner sleeve 3, which is locked into the annular groove 12 with a radially inwardly directed bead 16 and is supported with an end edge 17 in the axial direction on the inside of the collar 8.
  • the inner sleeve 3 forms, together with the connecting element 5, an easily mountable snap connection, so that additional components such as locking rings or the like are unnecessary.
  • the side surface 18 of the annular groove 12 facing the collar 8 is designed as an obtuse-angled conical ring surface.
  • the bead 16 of the constriction 15 therefore pulls the connecting element 5 into the inner sleeve 3 as far as it contracts after snapping into the annular groove 12 until the annular collar 11, the fastening ear 7, the collar 8 and the inner sleeve 3 rest against each other without play. Since the manufacturing-related dimensional deviations of the parts mentioned are small, it suffices if the described drawing of the connecting element 5 into the inner sleeve 3 is only a few tenths of a millimeter.
  • the insertion of the connecting element 5 into the inner sleeve 3 during assembly of the closure is facilitated by the conical surfaces 19, 20 on the connecting element 5 and the inner sleeve 3.
  • a hollow pin 21 of a cap head 22 is held in the blind bore 9 of the connecting element 5.
  • the cap head 22 encloses the connecting element 5 so that it is no longer visible from the outside and can be designed as desired in its shape and color or can be matched to the cap sleeve 2.
  • the assembly of the cap described is extremely simple. First, the cap sleeve 2, the clip 6 and the connecting element 5 are inserted into one another and then firmly connected to one another by pressing in the inner sleeve 3. The parts can be fed and assembled automatically. Then the cap head 22 is inserted with its pin 21 into the connecting element. The attachment can be done by friction or additionally by gluing.
  • a narrow annular collar 23 is provided in the bore of the cap sleeve 2, which is opposite the extreme end of the constriction 15 with little play and is connected to the bore wall by a conical surface 24 is. While the end cap 17 of the inner sleeve 3 slides along the conical surface with little elastic deformation when the closure cap 1 is assembled, until it snaps into place in the Ring groove 12 is located within the ring collar 23, the attempt to pull the snap connection apart supports the outer surface of the constriction 15 on the ring collar 23 and thereby complicates widening of the constriction 15 and thus also loosening of the snap connection. The snap connection between the connecting element 5 and the inner sleeve 3 is thus additionally secured against loosening.
  • the clip 26 and the connecting element 27 are injection molded in one piece from a plastic.
  • the connecting element 27 is connected in the same way as described in connection with FIG. 1 with a cap sleeve 2 and an inner sleeve 3.
  • the connecting element 27 therefore has a cylindrical section 10 with longitudinal ribs 13 and an annular groove 12 with a conical side surface 18.
  • the annular collar 28 of the connecting element 27 which merges into the clip 26 is adapted in its outer diameter to the cap sleeve 2 and is not covered by the shortened cap head 29.
  • the cap head 29 is fastened in the same way as in the closure cap 1 by means of a hollow pin 30 which is inserted into a blind hole 31 in the connecting element 27.
  • the assembly of the closure cap 25 is further simplified by the one-piece design of the clip 26 with the connecting element 27.
  • the invention leaves the designer a great deal of design freedom, the number of components which differ from one another being small.
  • the invention thus contributes to a particularly economical manufacture of writing utensils of various designs.

Landscapes

  • Clips For Writing Implements (AREA)
  • Pens And Brushes (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

The cap (1) consists of an outer cap sleeve (2), an inner sleeve (3) arranged in this cap sleeve (2), and a clip (6) attached to the outside of the cap sleeve (2). A connecting element (5) which can be inserted from outside into the cap sleeve (2) and the inner sleeve (3) is provided for fastening the clip (6) to the cap sleeve (2). The connecting element (5) passes through a bore in a fastening eye (7) of the clip (6) and has in its circumferential surface an annular groove (12) in which a necked-down portion (15, 16) at the end of the inner sleeve (3) catches. In this way, a connection which is simple to produce and assemble is provided between the clip (6), the cap sleeve (2) and the inner sleeve (3), which connection at the same time forms a tight closure at the end of the inner sleeve (3). A cap head (22) can be inserted from outside into the connecting element (5). The cap head (22) surrounds the connecting element (5) from the outside and permits a different design and colouring for the closure at the end of the cap. <IMAGE>

Description

Die Erfindung betrifft eine Verschlußkappe für ein Handschreibgerät, bestehend aus einer äußeren Kappenhülse, einer im Innern der Kappenhülse angeordneten Innenhülse, einem auf der Außenseite der Kappenhülse und der Innenhülse verschließenden Verschluß mit zwei ineinander rastbaren Teilen, durch die die Kappenhülse, die Innenhülse und der Clip miteinander verbinden sind, wobei der Verschluß ein von außen in die Kappenhülse und die Innenhülse einsetzbares Verbindungselement aufweist, in dessen Mantelfläche eine Ringnut vorgesehen ist, in die ein Wulst am Ende der Innenhülse einrastet.The invention relates to a closure cap for a hand-held writing instrument, consisting of an outer cap sleeve, an inner sleeve arranged inside the cap sleeve, a closure on the outside of the cap sleeve and the inner sleeve with two interlocking parts, through which the cap sleeve, the inner sleeve and the clip are connected to one another, the closure having a connecting element which can be inserted from the outside into the cap sleeve and the inner sleeve, in the outer surface of which an annular groove is provided, into which a bead engages at the end of the inner sleeve.

Eine Verschlußkappe dieser Art ist durch offenkundige Vorbenutzung bekannt Bei dieser bekannten Verschlußkappe ist der Wulst der Innenhülse nicht ausreichend gegen Lösen vom Verbindungselement gesichert.A closure cap of this type is known from prior public use. In this known closure cap, the bead of the inner sleeve is not sufficiently secured against loosening from the connecting element.

Bei einer anderen bekannten Verschlußkappe (DE-GM 69 11 385) besteht der Verschluß am Ende der Kappenhülse aus einem von außen auf das Ende der Kappenhülse aufsetzbaren Verschlußstück, das einen in die Kappenhülse hineinragenden Schaft aufweist, der das Befestigungsohr des Clips und einen Radialbund am Ende der Innenhülse durchgreift. Der schaft wird durch einen Rastring gehalten, der in die Innenhülse eingesetzt ist und eine Innenausnehmung aufweist, die in eine Hinterschneidung im Schaft einrastet. Diese bekannte verschlußkappe hat den Nachteil, daß die Montage des Rastringes kompliziert und aufwendig ist und sich nicht für einen automatischen Montagevorgang eignet.In another known closure cap (DE-GM 69 11 385), the closure at the end of the cap sleeve consists of a closure piece which can be fitted from the outside onto the end of the cap sleeve and which has a shaft protruding into the cap sleeve which has the fastening ear of the clip and a radial collar on Reaches through the end of the inner sleeve. The shaft is held by a locking ring which is inserted into the inner sleeve and has an inner recess which snaps into an undercut in the shaft. This known cap has the disadvantage that the Assembly of the locking ring is complicated and expensive and is not suitable for an automatic assembly process.

Es ist weiterhin ein Verschlußkappe bekannt (DE-GM 73 14 439), bei der der Clip am Ende der Kappenhülse durch eine Clipschraube gehalten wird, die in einen Gewindeansatz am Ende der Innenkappe einschraubbar ist. Hierdurch kann eine separate Clipmutter auf der Innenseite der Kappenhülse entfallen. Bei dieser bekannten Verschlußkappe ist jedoch von Nachteil, daß die Herstellung der Innenkappe spritztechnisch aufwendig ist, da der aus Gründen der Abdichtung erforderliche Kappenboden im Spritzwerkzeug einen freistehenden kern erforderlich macht. Auch die Montage der bekannten Verschlußkappe ist nicht so einfach, weil die Innenkappe mit Hilfe eines besonderen Werkzeugs, das in Ausnehmungen im Kappenboden eingreift, gegen Verdrehen gesichert werden muß.A closure cap is also known (DE-GM 73 14 439), in which the clip is held at the end of the cap sleeve by a clip screw which can be screwed into a threaded attachment at the end of the inner cap. This means that a separate clip nut on the inside of the cap sleeve can be omitted. In this known closure cap, however, it is disadvantageous that the production of the inner cap is expensive in terms of injection molding, since the cap base required in the injection mold for sealing purposes makes a free-standing core necessary. The assembly of the known closure cap is also not so simple because the inner cap must be secured against twisting with the aid of a special tool which engages in recesses in the cap base.

Bei einer weiteren bekannten Verschlußkappe (DE-B 1289456) ist der Verbindungselement von innen in die Kappenhülse und die Innenhülse einsetzbar.In another known closure cap (DE-B 1289456), the connecting element can be inserted from the inside into the cap sleeve and the inner sleeve.

Der Erfindung liegt die Aufgabe zugrunde, eine Verschlußkappe der eingangs genannten Art zu schaffen, die aus einfach herstellbaren Teilen besteht, auf einfache Weise auch mit Hilfe automatischer Einrichtungen montierbar ist und bei der die Rastverbindung zwischen Innenhülse und Verbindungselement zusätzlich gegen Lösen gesichert ist.The invention has for its object to provide a cap of the type mentioned, which consists of easy to manufacture parts, can be easily assembled with the help of automatic devices and in which the snap connection between the inner sleeve and the connecting element is additionally secured against loosening.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß das Ende der Innenhülse eine Einschnürung aufweist und daß in der Bohrung der Kappenhülse ein nach innen vorspringender Ringbund vorgesehen ist, der der Einschnürung gegenüber liegt und die Innenhülse an einer radialen Aufweitung hindert und der durch eine Kegelfläche an die Bohrungswand angeschlossen ist.This object is achieved in that the end of the inner sleeve has a constriction and that an inwardly projecting ring collar is provided in the bore of the cap sleeve, which is opposite the constriction and prevents the inner sleeve from radial expansion and which through a conical surface to the Hole wall is connected.

Die erfindungsgemäße Verschlußkappe zeichnet sich durch eine Reihe von Vorteilen aus. So ist die Montage der Verschlußkappe besonders einfach, da nur die Innenhülse in die Kappenhülse eingeführt wird und die übrigen Teile von außen montiert werden können. Da das Verbindungselement unmittelbar in die Innenhülse einrastet, genügt es bei der Montage, wenn die Innenhülse entsprechend abgestützt wird. Die Rastverbindung zwischen der Innenhülse und dem Verbindungselement schafft weiterhin eine gute Abdichtung, da die Einschnürung der Innenhülse aufgrund ihrer Elastizität mit radialer Spannung an den Wandflächen der Ringnut des Befestigungselements anliegt. Außerdem ergibt sich durch das direkte Eingreifen des Verbindungselements in die Innenhülse ein verhältnismäßig großer Durchmesser für die Rastverbindung, der eine gute Aufnahme der Kräfte beim Federn des Clips gewährleistet. Die Bauteile der erfindungsgemäßen Verschlußkappe sind spritztechnisch einfach herzustellen. Insbesondere bei der Herstellung von Kappenhülse und Innenhülse ist es von Vorteil, daß die Spritzform einen durchgehenden Kern haben kann.The closure cap according to the invention is characterized by a number of advantages. So the assembly of the cap is particularly easy, since only the inner sleeve in the Cap sleeve is inserted and the remaining parts can be mounted from the outside. Since the connecting element snaps directly into the inner sleeve, it is sufficient during assembly if the inner sleeve is supported accordingly. The snap connection between the inner sleeve and the connecting element continues to create a good seal, since the constriction the inner sleeve rests due to its elasticity with radial tension on the wall surfaces of the annular groove of the fastener. In addition, the direct engagement of the connecting element in the inner sleeve results in a relatively large diameter for the latching connection, which ensures good absorption of the forces when the clip is springed. The components of the closure cap according to the invention are easy to manufacture by injection molding. In particular in the manufacture of the cap sleeve and inner sleeve, it is advantageous that the injection mold can have a continuous core.

Die nach außen offene Bohrung des Verbindungselements der erfindungsgemäßen Verschlußkappe kann in einer vorteilhaften Ausgestaltung zur Befestigung eines Kappenkopfes dienen, der das Verbindungselement von außen umgibt. Das Verbindungselement ist somit nicht von außen sichtbar und kann daher für zahlreiche Verschlußkappen unterschiedlicher Farbe verwendet werden. Die Anbringung des Kappenkopfes in der Bohrung des Verbindungselements ist einfach und läßt der Formgestaltung des Kappenkopfes freien Raum.The outwardly open bore of the connecting element of the closure cap according to the invention can serve in an advantageous embodiment for fastening a cap head which surrounds the connecting element from the outside. The connecting element is therefore not visible from the outside and can therefore be used for numerous caps of different colors. The attachment of the cap head in the bore of the connecting element is simple and leaves the shape of the cap head free.

Um die erfindungsgemäße Verschlußkappe noch weiter zu vereinfachen, kann vorgesehen sein, daß das Verbindungselement mit dem Clip einstückig ausgebildet ist. Verbindungselement und Clipohr sind dann zu einem Bauteil verschmolzen, wodurch die Teilezahl weiter verringert und die Montage entsprechend vereinfacht wird.In order to further simplify the closure cap according to the invention, it can be provided that the connecting element is formed in one piece with the clip. The connecting element and clip ear are then fused into one component, which further reduces the number of parts and simplifies assembly accordingly.

In einer weiteren Ausgestaltung der Erfindung ist vorgesehen, daß die Einschnürung der Innenhülse auf ihrer der Montagerichtung abgekehrten Seite an einer sich in Montagerichtung verjüngenden, stumpfwinkligen Kegelfläche des Verbindungselements anliegt. Hierdurch wird ein Toleranzausgleich erzielt, da die Einschnürung der Innenhülse das Bestreben hat durch Kontraktion sich auf der Kegelfläche so weit zu verschieben, bis die Kappenhülse und gegebenenfalls das Befestigungsohr des Clips in axialer Richtung spielfrei am Verbindungselement anliegen. Weiterhin wird durch diese Ausgestaltung eine gute Abdichtung zwischen dem Verbindungselement und der Innenhülse erzielt.In a further embodiment of the invention it is provided that the constriction of the inner sleeve, on its side facing away from the mounting direction, rests against an obtuse-angled conical surface of the connecting element that tapers in the mounting direction. This is a tolerance compensation achieved, since the constriction of the inner sleeve has the tendency to move by contraction on the conical surface until the cap sleeve and, if applicable, the fastening ear of the clip rest against the connecting element in the axial direction without play. Furthermore, a good seal between the connecting element and the inner sleeve is achieved by this configuration.

Eine Verdrehsicherung zwischen dem Verbindungselement und der Kappenhülse, die zur Lagesicherung des Clips erforderlich ist, kann erfindungsgemäß vorteilhaft dadurch erreicht werden, daß ein zylindrischer Bereich des Verbindungselements, der in einen Bohrungsabschnitt der Kappenhülse eingreift, mit Längsrippen versehen ist, die in Längsrillen in der Wand des Bohrungsabschnitts eingreifen. Zur Vereinfachung der Positionierung kann die Zahl der Längsrillen ein Vielfaches der Zahl der Längsrippen betragen. Die Verdrehsicherung des Clips gegenüber dem Verbindungselement kann ebenfalls mit Hilfe der Längsrippen erzielt werden, indem diese in Rillen eingreifen, die in der Bohrung im Befestigungsohr des Clips vorgesehen sind.An anti-rotation device between the connecting element and the cap sleeve, which is required for securing the clip in position, can advantageously be achieved according to the invention in that a cylindrical region of the connecting element, which engages in a bore section of the cap sleeve, is provided with longitudinal ribs which are in longitudinal grooves in the wall of the bore section. To simplify the positioning, the number of longitudinal grooves can be a multiple of the number of longitudinal ribs. The anti-rotation of the clip relative to the connecting element can also be achieved with the aid of the longitudinal ribs by engaging in grooves which are provided in the bore in the fastening ear of the clip.

Die Erfindung wird nachfolgend anhand einiger bevorzugter Ausführungsbeispiele näher erläutert, die in der Zeichnung dargestellt sind. Es zeigen

  • Fig. 1 einen Längsschnitt durch eine erfindungsgemäße Verschlußkappe mit einem aus Metall hergestellten Clip,
  • Fig. 2 einen Längsschnitt durch eine erfindungsgemäße Verschlußkappe mit einem einstückig mit dem Verbindungselement aus einem Kunststoff hergestellten Clip,
  • Fig. 3 einen Querschnitt A-A durch die Verschlußkappe gemäß Fig. 1, wobei das Verbindungselement und die Kappenhülse getrennt nebeneinander dargestellt sind.
The invention is explained in more detail below on the basis of a few preferred exemplary embodiments which are illustrated in the drawing. Show it
  • 1 shows a longitudinal section through a closure cap according to the invention with a clip made of metal,
  • 2 shows a longitudinal section through a closure cap according to the invention with a clip made in one piece with the connecting element from a plastic,
  • Fig. 3 shows a cross section AA through the cap according to FIG. 1, wherein the connecting element and the cap sleeve are shown separately next to each other.

Die in Fig. 1 dargestellte Verschlußkappe 1 eines Füllfederhalters besteht aus einer äußeren Kappenhülse 2, in der sich eine Innenhülse 3 aus einem elastischen Kunststoff befindet, die mit Arretierungsnasen 4 zur Halterung der Verschlußkappe 1 auf der Schreibspitze des Füllhalters versehen ist. Die Kappenhülse 2 und die Innenhülse 3 sind an einem Ende durch ein Verbindungselement 5 verschlossen, das die beiden Teile und einen auf der Außenseite der Kappenhülse 2 angeordneten Clip 6 miteinander verbindet. Der Clip 6 besteht aus Metall und ist mit einem rechtwinklig abgebogenen Befestigungsohr 7 versehen, das von außen an der Stirnfläche am Ende der Kappenhülse 2 anliegt und mit seinem Außendurchmesser dem Außendurchmesser der Kappenhülse 2 angeglichen ist. Die Stirnfläche am Ende der Kappenhülse 2 wird durch einen radial nach innen gerichteten Bund 8 gebildet, an den sich von innen in axialer Richtung die Innenhülse 3 anlegt.The cap 1 of a fountain pen shown in Fig. 1 consists of an outer cap sleeve 2, in which there is an inner sleeve 3 made of an elastic plastic, which is provided with locking lugs 4 for holding the cap 1 on the writing tip of the fountain pen. The cap sleeve 2 and the inner sleeve 3 are closed at one end by a connecting element 5 which connects the two parts and a clip 6 arranged on the outside of the cap sleeve 2. The clip 6 is made of metal and is provided with a fastening tube 7 bent at a right angle, which bears from the outside against the end face at the end of the cap sleeve 2 and is matched with its outside diameter to the outside diameter of the cap sleeve 2. The end face at the end of the cap sleeve 2 is formed by a radially inwardly directed collar 8, against which the inner sleeve 3 bears in the axial direction from the inside.

Das Verbindungselement 5 besteht aus einem im wesentlichen zylindrischen Körper, mit einer zentralen Sackbohrung 9, deren Öffnung nach außen gerichtet ist. Die Mantelfläche des Verbindungselements 5 besteht aus einem mittleren, zylindrischen Abschnitt 10, an den sich nach außen ein im Durchmesser gegenüber dem Abschnitt erweiterter Ringbund 11 und nach innen eine Ringnut 12 anschließen. Der Abschnitt 10 ist, wie Fig. 3 zeigt, mit Längsrippen 13 versehen, die in Längskerben 14 in den Bohrungen im Befestigungsohr 7 und im Bund 8 eingreifen und diese Teile gegen gegenseitiges Verdrehen sichern. Die Zahl der Längskerben 14 beträgt ein Mehrfaches der Zahl der Längsrippen 13, um das Einstecken des Verbindungselements 5 in das Befestigungsohr 7 und den Bund 8 zu erleichtern.The connecting element 5 consists of a substantially cylindrical body, with a central blind hole 9, whose opening is directed outwards. The outer surface of the connecting element 5 consists of a central, cylindrical section 10, to which an annular collar 11 with a larger diameter than the section adjoins and an annular groove 12 to the inside. The section 10, as shown in FIG. 3, is provided with longitudinal ribs 13 which engage in longitudinal notches 14 in the bores in the fastening ear 7 and in the collar 8 and secure these parts against mutual rotation. The number of longitudinal notches 14 is a multiple of the number of longitudinal ribs 13 in order to facilitate the insertion of the connecting element 5 into the fastening ear 7 and the collar 8.

In axialer Richtung drückt das Verbindungselement 5 mit seinem Ringbund 11 das Befestigungsohr 7 gegen die Stirnfläche der Kappenhülse 2, so daß der Clip 6 in jeder Richtung formschlüssig mit der Kappenhülse 2 verbunden ist. Das Verbindungselement 5 wird hierzu durch eine elastisch verformbare Einschnürung 15 am Ende der Innenhülse 3 gehalten, die mit einem radial nach innen gerichteten Wulst 16 in die Ringnut 12 eingerastet ist und sich mit einer Stirnkante 17 in axialer Richtung an der Innenseite des Bunds 8 abstützt. Die Innenhülse 3 bildet auf diese Weise zusammen mit dem Verbindungselement 5 eine einfach montierbare Schnappverbindung, so daß zusätzliche Bauteile wie Rastringe oder dergleichen entbehrlich sind.In the axial direction, the connecting element 5 presses the fastening ear 7 with its ring collar 11 against the end face of the cap sleeve 2, so that the clip 6 is positively connected to the cap sleeve 2 in each direction. For this purpose, the connecting element 5 is held by an elastically deformable constriction 15 at the end of the inner sleeve 3, which is locked into the annular groove 12 with a radially inwardly directed bead 16 and is supported with an end edge 17 in the axial direction on the inside of the collar 8. In this way, the inner sleeve 3 forms, together with the connecting element 5, an easily mountable snap connection, so that additional components such as locking rings or the like are unnecessary.

Um Maßtoleranzen auszugleichen und den Verschluß in axialer Richtung spielfrei zu halten, ist die dem Bund 8 zugewandte Seitenfläche 18 der Ringnut 12 als stumpfwinklige Kegelringfläche ausgebildet. Der Wulst 16 der Einschnürung 15 zieht daher bei seiner Kontraktion nach dem Einschnappen in die Ringnut 12 das Verbindungselement 5 in die Innenhülse 3 so weit hinein, bis der Ringbund 11, das Befestigungsohr 7, der Bund 8 und die Innenhülse 3 spielfrei aneinander anliegen. Da die herstellungsbedingten Maßabweichungen der genannten Teile gering sind, genügt es, wenn das beschriebene Einziehen des Verbindungselements 5 in die Innenhülse 3 nur wenige zehntel Millimeter beträgt.In order to compensate for dimensional tolerances and to keep the closure free of play in the axial direction, the side surface 18 of the annular groove 12 facing the collar 8 is designed as an obtuse-angled conical ring surface. The bead 16 of the constriction 15 therefore pulls the connecting element 5 into the inner sleeve 3 as far as it contracts after snapping into the annular groove 12 until the annular collar 11, the fastening ear 7, the collar 8 and the inner sleeve 3 rest against each other without play. Since the manufacturing-related dimensional deviations of the parts mentioned are small, it suffices if the described drawing of the connecting element 5 into the inner sleeve 3 is only a few tenths of a millimeter.

Das Einstecken des Verbindungselements 5 in die Innenhülse 3 bei der Montage des Verschlusses wird durch die Kegelflächen 19, 20 am Verbindungselement 5 und der Innenhülse 3 erleichtert. In der Sackbohrung 9 des Verbindungselements 5 ist ein hohler Zapfen 21 eines Kappenkopfes 22 gehalten. Der Kappenkopf 22 umschließt das Verbindungselement 5, so daß es von außen nicht mehr sichtbar ist und kann in seiner Form und seiner Farbe beliebig gestaltet bzw. auf die Kappenhülse 2 abgestimmt sein.The insertion of the connecting element 5 into the inner sleeve 3 during assembly of the closure is facilitated by the conical surfaces 19, 20 on the connecting element 5 and the inner sleeve 3. A hollow pin 21 of a cap head 22 is held in the blind bore 9 of the connecting element 5. The cap head 22 encloses the connecting element 5 so that it is no longer visible from the outside and can be designed as desired in its shape and color or can be matched to the cap sleeve 2.

Die Montage der beschriebenen Verschlußkappe ist außerordentlich einfach. Zunächst werden die Kappenhülse 2, der Clip 6 und das Verbindungselement 5 ineinandergesteckt und dann durch Eindrücken der Innenhülse 3 fest miteinander verbunden. Das Zuführen und Zusammenfügen der Teile kann dabei automatisch erfolgen. Anschließend wird der Kappenkopf 22 mit seinem Zapfen 21 in das Verbindungselement eingesteckt. Die Befestigung kann dabei durch Reibschluß oder zusätzlich durch Klebung erfolgen.The assembly of the cap described is extremely simple. First, the cap sleeve 2, the clip 6 and the connecting element 5 are inserted into one another and then firmly connected to one another by pressing in the inner sleeve 3. The parts can be fed and assembled automatically. Then the cap head 22 is inserted with its pin 21 into the connecting element. The attachment can be done by friction or additionally by gluing.

Um die Schnappverbindung zwischen der Innenhülse 3 und dem Verbindungselement 5 zusätzlich gegen Lösen zu sichern, ist in der Bohrung der Kappenhülse 2 ein schmaler Ringbund 23 vorgesehen, der dem äußersten Ende der Einschnürung 15 mit geringem Spiel gegenüberliegt und durch eine Kegelfläche 24 an die Bohrungswand angeschlossen ist. Während beim Zusammensetzen der Verschlußkappe 1 die Stirnkante 17 der Innenhülse 3 unter geringer elastischer Verformung an der Kegelfläche entlanggleitet, bis sie sich beim Einrasten in die Ringnut 12 innerhalb des Ringbunds 23 befindet, stützt sich bei dem Versuch, die Schnappverbindung auseinanderzuziehen, die Mantelfläche der Einschnürung 15 an dem Ringbund 23 ab und erschwert dadurch eine Aufweitung der Einschnürung 15 und somit auch ein Lösen der Schnappverbindung. Die Schnappverbindung zwischen dem Verbindungselement 5 und der Innenhülse 3 ist somit zusätzlich gegen Lösen gesichert.In order to additionally secure the snap connection between the inner sleeve 3 and the connecting element 5 against loosening, a narrow annular collar 23 is provided in the bore of the cap sleeve 2, which is opposite the extreme end of the constriction 15 with little play and is connected to the bore wall by a conical surface 24 is. While the end cap 17 of the inner sleeve 3 slides along the conical surface with little elastic deformation when the closure cap 1 is assembled, until it snaps into place in the Ring groove 12 is located within the ring collar 23, the attempt to pull the snap connection apart supports the outer surface of the constriction 15 on the ring collar 23 and thereby complicates widening of the constriction 15 and thus also loosening of the snap connection. The snap connection between the connecting element 5 and the inner sleeve 3 is thus additionally secured against loosening.

Bei der in Fig. 2 dargestellten Verschlußkappe 25 sind der Clip 26 und das Verbindungselement 27 in einem Arbeitsgang einteilig aus einem Kunststoff gespritzt. Das Verbindungselement 27 wird in gleicher Weise wie in Verbindung mit Fig. 1 beschrieben mit einer Kappenhülse 2 und einer Innenhülse 3 verbunden. Das Verbindungselement 27 weist daher analog zum Verbindungselement 5 einen zylindrischen Abschnitt 10 mit Längsrippen 13 und eine Ringnut 12 mit einer kegeligen Seitenfläche 18 auf. Der in den Clip 26 übergehende Ringbund 28 des Verbindungselements 27 ist in seinem Außendurchmesser der Kappenhülse 2 angepaßt und nicht von dem verkürzten Kappenkopf 29 bedeckt. Die Befestigung des Kappenkopfes 29 erfolgt in gleicher Weise wie bei der Verschlußkappe 1 durch einen hohlen Zapfen 30, der in eine Sackbohrung 31 im Verbindungselement 27 eingesteckt wird. Die Montage der Verschlußkappe 25 ist durch die einteilige Ausbildung des Clips 26 mit dem Verbindungselement 27 noch weiter vereinfacht.In the closure cap 25 shown in FIG. 2, the clip 26 and the connecting element 27 are injection molded in one piece from a plastic. The connecting element 27 is connected in the same way as described in connection with FIG. 1 with a cap sleeve 2 and an inner sleeve 3. Analogously to the connecting element 5, the connecting element 27 therefore has a cylindrical section 10 with longitudinal ribs 13 and an annular groove 12 with a conical side surface 18. The annular collar 28 of the connecting element 27 which merges into the clip 26 is adapted in its outer diameter to the cap sleeve 2 and is not covered by the shortened cap head 29. The cap head 29 is fastened in the same way as in the closure cap 1 by means of a hollow pin 30 which is inserted into a blind hole 31 in the connecting element 27. The assembly of the closure cap 25 is further simplified by the one-piece design of the clip 26 with the connecting element 27.

Wie die verschiedenen Ausführungsbeispiele zeigen, läßt die Erfindung dem Konstrukteur einen großen Gestaltungsspielraum, wobei die Zahl der voneinander abweichenden Bauelemente gering ist. Die Erfindung trägt somit zu einer besonders wirtschaftlichen Herstellung vielfältig gestalteter Schreibgeräte bei.As the various exemplary embodiments show, the invention leaves the designer a great deal of design freedom, the number of components which differ from one another being small. The invention thus contributes to a particularly economical manufacture of writing utensils of various designs.

Claims (7)

  1. A closure cap for a manual writing implement, the cap comprising an outer cap sleeve (2), an inner sleeve (3) disposed inside the cap sleeve, a clip (6) mounted on the outside of the cap sleeve and a closure means closing the open end of the cap sleeve and the inner sleeve and having two interlocking parts for connecting the cap sleeve, the inner sleeve and the clip (6) to one another, the closure means comprising a connecting element (5; 27) insertable from the exterior at the end of the cap sleeve (2) and into the cap sleeve (2) and the inner sleeve (3), the surface of the connecting element being formed with an annular groove (12) for engaging a bead (16) on the end of the inner sleeve (3) after resilient radial expansion of the inner sleeve (3) during assembly, characterised in that the end of the inner sleeve (3) has a constriction (15) and an inwardly projecting annular collar (23) is provided in the bore of the cap sleeve (2) and is disposed opposite the constriction (15) and prevents the inner sleeve (3) from radial expansion and is closed by a conical surface (24) on the wall of the bore.
  2. A closure cap according to claim 1, characterised in that the connecting element (5; 27) has an externally open blind bore (9; 31) for securing a cap head (22, 29) which covers the connecting element (5; 27).
  3. A closure cap according to claim 1, characterised in that the connecting element (27) is made in one piece with the clip (26).
  4. A closure cap according to any preceding claim, characterised in that the constriction (15; 16) in the inner sleeve (3), on its side remote from the direction of assembly, is adjacent an obtuse-angled conical surface (18) of the connecting element (5; 27), the conical surface tapering in the direction of assembly.
  5. A closure cap according to any of the preceding claims, characterised in that the outer surface of the constriction (15; 16) is disposed opposite an annular collar (23) formed by the cap sleeve (2) and preventing the constriction (15, 16) on the inner sleeve (3) from radial expansion.
  6. A closure cap according to any of the preceding claims, characterised in that a cylindrical region (10) of the connecting element (5; 27) engages in a portion (8) of the bore in the cap sleeve (2) and has longitudinal ribs (13) which engage in longtudinal grooves (14) in the wall of the bore portion (8).
  7. A closure cap according to any of the preceding claims, characterised in that the region (10) of the connecting element (5) extends through a bore in a securing lug (7) of the clip (6), and the bore has longitudinal grooves (14) for engaging the longitudinal ribs (13) of the connecting element.
EP88107262A 1987-05-27 1988-05-06 Cap for a writing instrument Expired - Lifetime EP0292755B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88107262T ATE67450T1 (en) 1987-05-27 1988-05-06 CAP FOR A HANDWRITING INSTRUMENT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873717894 DE3717894A1 (en) 1987-05-27 1987-05-27 CAP FOR A HANDWRITER
DE3717894 1987-05-27

Publications (2)

Publication Number Publication Date
EP0292755A1 EP0292755A1 (en) 1988-11-30
EP0292755B1 true EP0292755B1 (en) 1991-09-18

Family

ID=6328549

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88107262A Expired - Lifetime EP0292755B1 (en) 1987-05-27 1988-05-06 Cap for a writing instrument

Country Status (3)

Country Link
EP (1) EP0292755B1 (en)
AT (1) ATE67450T1 (en)
DE (2) DE3717894A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4001564C1 (en) * 1990-01-20 1991-08-01 Gebr. Schmidt, Fabrik Fuer Feinmechanik, 7742 St Georgen, De Pen with vented cap - has vent connected to cap interior through diffusion venting channel which crosses sealing sleeve against inside cap wall
DE4324593C1 (en) * 1993-07-22 1994-08-18 Pelikan Ag Hand-held writing instrument with removable cap
DE4407153C2 (en) * 1994-03-04 1999-01-07 Pelikan Ag Cap for covering the tip of a hand-held writing instrument

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2509234A (en) * 1945-12-28 1950-05-30 Kahn David Inc Fountain pen cap
DE1954338U (en) * 1966-10-13 1967-01-26 Faber Castell A W CLIP-ON FILLER HOLDER CAP.
DE1289456B (en) * 1966-10-21 1969-02-13 Montblanc Simplo Gmbh Threadless protective cap for fountain pen
DE6911385U (en) * 1969-03-21 1969-08-28 Staedtler Fa J S DEVICE FOR FASTENING A CLIP TO FILLING PENS
DE7314439U (en) * 1973-04-16 1973-07-12 Geha Werke Gmbh Push-in cap
DE2729514A1 (en) * 1977-03-16 1979-01-11 Kreuzer Erwin Writing instrument with swivelling clip holder - can swivel from holding position to locked swivel position and incorporates stand surface
DE3545719C1 (en) * 1985-12-21 1987-04-09 Otto Mutschler Clip fastening on a writing implement

Also Published As

Publication number Publication date
EP0292755A1 (en) 1988-11-30
DE3864902D1 (en) 1991-10-24
ATE67450T1 (en) 1991-10-15
DE3717894C2 (en) 1989-03-02
DE3717894A1 (en) 1988-12-08

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