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EP1490725A2 - Form-fitting connection between a piece of wire and an injection-molded plastic body, particularly for eyeglasses - Google Patents

Form-fitting connection between a piece of wire and an injection-molded plastic body, particularly for eyeglasses

Info

Publication number
EP1490725A2
EP1490725A2 EP03714523A EP03714523A EP1490725A2 EP 1490725 A2 EP1490725 A2 EP 1490725A2 EP 03714523 A EP03714523 A EP 03714523A EP 03714523 A EP03714523 A EP 03714523A EP 1490725 A2 EP1490725 A2 EP 1490725A2
Authority
EP
European Patent Office
Prior art keywords
wire
piece
hairpin
plug
molded body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP03714523A
Other languages
German (de)
French (fr)
Inventor
Rupert Spindelbalker
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.)
Silhouette International Schmied AG
Original Assignee
Silhouette International Schmied AG
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 Silhouette International Schmied AG filed Critical Silhouette International Schmied AG
Publication of EP1490725A2 publication Critical patent/EP1490725A2/en
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts
    • G02C5/12—Nose pads; Nose-engaging surfaces of bridges or rims
    • G02C5/126—Nose pads; Nose-engaging surfaces of bridges or rims exchangeable or otherwise fitted to the shape of the nose
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C1/00—Assemblies of lenses with bridges or browbars
    • G02C1/02—Bridge or browbar secured to lenses without the use of rims
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C5/00—Constructions of non-optical parts
    • G02C5/12—Nose pads; Nose-engaging surfaces of bridges or rims

Definitions

  • the invention relates to a positive connection between a piece of wire and a molded body molded from plastic, in particular for glasses, one end of the wire piece being anchored in the molded body via two sections of a holder arranged next to one another.
  • the parallel mounting pins also result in a twist-proof mounting of the wire piece relative to the fitting, which is advantageous fastening conditions.
  • a disadvantage of this fastening via parallel fastening pins is, above all, the increased construction effort associated with soldering or welding, the soldering or welding points being at risk of corrosion and increasing the risk of breakage if the wire piece compared to the shaped piece holding it, for example for adapting the nose pad Glasses to be bent.
  • the invention is therefore based on the object to design a positive connection between a piece of wire and a molded plastic injection molded body of the type described so that a safe, well-resilient connection between the end of the wire piece and the molded plastic body can be ensured with little design effort can.
  • the invention achieves the object in that the wire piece has a hairpin-shaped end, the legs of which form the holder, and the hairpin-shaped end engages in a form-fitting manner in a plug-in receptacle of the shaped body which is adapted to the hairpin shape of the wire end and forms an undercut.
  • an axially secured holding of the end of the wire piece in the molded body made of plastic can be achieved if the molded body has a plug-in receptacle for the wire end that is adapted to the hairpin shape of the wire end, because the undercut engages with the portion of the hairpin-shaped wire end engaging behind the undercut Pulling out of the wire end from the plug-in receptacle prevented.
  • the elasticity of the plastic or of the hairpin-shaped bent wire end enables the wire end to be inserted in a simple manner into the undercut plug-in receptacle of the shaped body.
  • the legs of the hairpin-shaped end could converge against the adjoining section of the wire piece, so that the greatest width of the wire end results in the region of the curved web connecting the two legs of the hairpin-shaped end.
  • a plug receptacle adapted to such a wire end forms an undercut that can hardly be removed from the mold. It is therefore advantageous to use the gusset area resulting from the use of a round piece of wire between the two legs of the hairpin-shaped end for the axial anchoring of the piece of wire in the plug-in receptacle, in that the plug-in receptacle forms wall sections projecting into these twisted areas.
  • Another possibility of the tensile anchoring is to provide the leg of the hairpin-shaped end of the wire piece which is bent back against the other leg with a widening which is directed away from the other leg and is formed by a squeeze and which subjects the subsequent wall of the plug receptacle to a pressure load with the effect that the plastic in the area of the widening is displaced by a cold flow and in the wall of the plug-in receptacle a widening-receiving depression is created, which represents an undercut and ensures that the hairpin-shaped bent end of the wire piece is secured against being pulled out.
  • the broadening of one Legs of the hairpin-shaped end can also be used in connection with the wall sections of the plug-in receptacles projecting into the gusset area between the legs in order to ensure particularly advantageous anchoring conditions. Since the widening weakens the leg bent back against the further leg, this weakening has no effect on the load-bearing capacity of the connection between the wire piece and the molded body. The bending of the piece of wire held in the molded body stresses above all the leg directly passing into the piece of wire, while the other bent-back leg merely takes over rotation and pull-out protection.
  • 1 is a positive connection according to the invention between a piece of wire for holding a nose pad and a plastic nose bridge for a pair of glasses in a partially opened view,
  • Fig. 3 is a section along the line III-III of Fig. 1 on a larger scale
  • Fig. 4 shows a construction variant of a positive connection in a longitudinal section on a larger scale.
  • the molded body 1 is formed according to the illustrated embodiments by the nose bridge 2 of a pair of glasses, not shown, whose nose pads 3 are fastened to the nose bridge 2 with the aid of trimmings 4.
  • the wire piece 4 forms a hairpin-shaped end 5, the legs of which are designated 6 and 7.
  • Plug-in receptacles 8 are provided in the nose bridge 2, which have the outline shape of the hairpin-shaped end 5 of the wire pieces 4 correspond and take up the hairpin-shaped ends 5 of the wire pieces 4. As can be seen in FIG.
  • the plug receptacle 8 has projecting wall sections 9 against the gusset area between the two legs 6 and 7, which extend to the curved web of the hairpin-shaped end 5 connecting the two legs 6 and 7, so that these protrude Wall sections 9 are engaged by this web, which entails a tensile anchoring of the hairpin-shaped end 5 in the plug receptacle 8. Due to the elasticity of the plastic of the molding 1, the projecting wall sections 9 can be elastically deformed when the hairpin-shaped end 5 is inserted into the plug-in receptacle 8 until the web between the legs 6 and 7 engages in the undercut at the end of the wall sections 9. However, such an undercut does not have to be provided from the outset.
  • the bent-back leg 6 of the hairpin-shaped end 5 has a widening 10 which is produced by squeezing and which is directed away from the leg 7.
  • This widening 10 causes a pressure load on the wall of the plug receptacle 8, so that the plastic of the nose bridge 2 is permanently deformed in this area by cold flow and forms a depression 11 in which the widening 10 latches, as a result of which the hairpin-shaped end 5 of the wire piece 4 in the respective connector 8 is anchored tensile.
  • the recess 11 results in an undercut of the plug receptacle 8, which is widened behind by the widening 10.
  • the wire pieces 4 form curved eyelets 12 which, in undercut receptacles 13 of the nose pads 3, engage in a latching manner, as can be seen in FIG. 2. This results in simple connections both with regard to the nose pads 3 and with regard to the nose bridge 2, which meet the respective requirements for the load-bearing capacity.

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Ophthalmology & Optometry (AREA)
  • Optics & Photonics (AREA)
  • Eyeglasses (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
  • Clamps And Clips (AREA)
  • Corsets Or Brassieres (AREA)

Abstract

Disclosed is a form-fitting connection between a piece of wire (4) and an injection-molded plastic body (1), particularly for eyeglasses. One end of the piece of wire (4) is anchored in the molded body (1) via two adjacent sections of a holding device. In order to create simple construction conditions, the piece of wire (4) is provided with an end (5) which is bent in the shape of a hairpin and the legs (6, 7) of which form the holding device, and the end (5) of said piece of wire (4), which is bent in the shape of a hairpin, engages in a form-fitting manner in a plug-in seat (8) of the molded body (1), said plug-in seat (8) being adapted to the hairpin shape of the end (5) of the wire and forming an undercut.

Description

Formschlüssige Verbindung zwischen einem Drahtstück und einem aus Kunststoff gespritzten Formkörper, insbesondere für eine BrillePositive connection between a piece of wire and a molded body molded from plastic, in particular for glasses
Technisches GebietTechnical field
Die Erfindung bezieht sich auf eine formschlüssige Verbindung zwischen einem Drahtstück und einem aus Kunststoff gespritzten Formkörper, insbesondere für eine Brille, wobei ein Ende des Drahtstückes im Formkörper über zwei nebeneinander angeordnete Abschnitte einer Halterung verankert ist.The invention relates to a positive connection between a piece of wire and a molded body molded from plastic, in particular for glasses, one end of the wire piece being anchored in the molded body via two sections of a holder arranged next to one another.
Stand der TechnikState of the art
Zum Befestigen des Endes eines Drahtstückes an einem aus Kunststoff gespritzten Formkörper, beispielsweise der die Nasenauflagen tragenden Drahtstücke am Nasensteg einer Brille, ist es bekannt, am abgewinkelten Ende des Drahtstückes zwei parallele Befestigungsstifte anzulöten oder anzuschweißen, die mit im Querschnitt widerhakenartigen Ringwülsten versehen sind und in zwei Ausnehmungen des Formkörpers formschlüssig eingreifen. Die in die Ausnehmungen des Formkörpers aus Kunststoff eingedrückten Befestigungsstifte schneiden sich mit den widerhakenartigen Ringwülsten in die Ausnehmungswandung ein, so daß sich eine zugfeste Verankerung der Befestigungsstifte in den Ausnehmungen des Formkörpers ergibt. Die parallelen Befestigungsstifte ergeben außerdem eine verdrehsichere Halterung des Drahtstückes gegenüber dem Formstück, was vorteilhafte Befestigungsbedingungen schaft. Nachteilig bei dieser Befestigung über parallele Befestigungsstifte ist vor allem der mit dem Anlöten oder Anschweißen verbundene, erhöhte Konstruktionsaufwand, wobei die Löt- bzw. Schweißstellen korrosionsgefährdet sind und die Bruchgefahr vergrößern, wenn das Drahtstück gegenüber dem es haltenden Formstück, beispielsweise zum Anpassen der Nasenauflage einer Brille, gebogen werden soll. Darstellung der ErfindungTo fasten the end of a piece of wire to a molded body molded from plastic, for example the wire pieces supporting the nose pads on the nose bridge of glasses, it is known to solder or weld two parallel fastening pins at the angled end of the wire piece, which are provided with barbed ring beads in cross section and in engage two recesses of the molded body in a form-fitting manner. The fastening pins pressed into the recesses of the molded body made of plastic cut into the recess wall with the barb-like ring beads, so that there is a tensile anchoring of the fastening pins in the recesses of the molded body. The parallel mounting pins also result in a twist-proof mounting of the wire piece relative to the fitting, which is advantageous fastening conditions. A disadvantage of this fastening via parallel fastening pins is, above all, the increased construction effort associated with soldering or welding, the soldering or welding points being at risk of corrosion and increasing the risk of breakage if the wire piece compared to the shaped piece holding it, for example for adapting the nose pad Glasses to be bent. Presentation of the invention
Der Erfindung liegt somit die Aufgabe zugrunde, eine formschlüssige Verbindung zwischen einem Drahtstück und einem aus Kunststoff gespritzten Formkörper der eingangs geschilderten Art so auszugestalten, daß mit einem geringen Konstruktionsaufwand eine sichere, gut belastbare Verbindung zwischen dem Ende des Drahtstückes und dem Formkörper aus Kunststoff sichergestellt werden kann.The invention is therefore based on the object to design a positive connection between a piece of wire and a molded plastic injection molded body of the type described so that a safe, well-resilient connection between the end of the wire piece and the molded plastic body can be ensured with little design effort can.
Die Erfindung löst die gestellte Aufgabe dadurch, daß das Drahtstück ein haarna- delförmig gebogenes Ende aufweist, dessen Schenkel die Halterung bilden, und mit dem haarnadelförmig gebogenen Ende in eine an die Haarnadelform des Drahtendes angepaßte, eine Hinterschneidung bildende Steckaufnahme des Formkörpers formschlüssig eingreift.The invention achieves the object in that the wire piece has a hairpin-shaped end, the legs of which form the holder, and the hairpin-shaped end engages in a form-fitting manner in a plug-in receptacle of the shaped body which is adapted to the hairpin shape of the wire end and forms an undercut.
Durch das Rückbiegen des freien Endes des zu befestigen Drahtstückes zu einer Haarnadelform werden durch die beiden Schenkel des haarnadelförmi- gen Endes zwei nebeneinander verlaufende Abschnitte einer Halterung erreicht, die eine verdrehsichere Verankerung des Drahtstückes im Formkörper erlaubt, ohne zusätzliche Stifte am zu befestigenden Ende des Drahtstückes anlöten oder anschweißen zu müssen, so daß die mit einer solchen Löt- oder Schweißverbindung verbundenen Nachteile entfallen. Trotzdem kann eine axial gesicherte Halterung des Endes des Drahtstückes im Formkörper aus Kunststoff erzielt werden, wenn der Formkörper eine an die Haarnadelform des Drahtendes angepaßte, eine Hinterschneidung bildende Steckaufnahme für das Drahtende aufweist, weil die Hinterschneidung mit dem die Hinterschneidung hintergreifenden Abschnitt des haarnadelförmigen Drahtendes ein Ausziehen des Drahtendes aus der Steckaufnahme verhindert. Die Elastizität des Kunststoffes bzw. des haarnadelförmig gebogenen Drahtendes ermöglicht dabei in einfacher Weise das Einführen des Drahtendes in die hinterschnittene Steckaufnahme des Formkörpers.By bending back the free end of the piece of wire to be fastened into a hairpin shape, two adjacent sections of a holder are achieved through the two legs of the hairpin-shaped end, which allows the wire piece to be anchored in the shaped body in a rotationally secure manner, without additional pins on the end of the wire piece to be fastened to have to solder or weld, so that the disadvantages associated with such a solder or weld connection are eliminated. Nevertheless, an axially secured holding of the end of the wire piece in the molded body made of plastic can be achieved if the molded body has a plug-in receptacle for the wire end that is adapted to the hairpin shape of the wire end, because the undercut engages with the portion of the hairpin-shaped wire end engaging behind the undercut Pulling out of the wire end from the plug-in receptacle prevented. The elasticity of the plastic or of the hairpin-shaped bent wire end enables the wire end to be inserted in a simple manner into the undercut plug-in receptacle of the shaped body.
Um entsprechende Voraussetzungen für ein Hintergreifen der hinterschnittenen Steckaufnahme durch das haarnadelförmig gebogene Drahtende zu schaffen, könnten die Schenkel des haarnadelförmigen Endes gegen den anschließenden Abschnitt des Drahtstückes zusammenlaufen, so daß sich im Bereich des die beiden Schenkel des haarnadelförmigen Endes verbindenden, gebogenen Steges die größte Breite des Drahtendes ergibt. Eine an ein solches Drahtende angepaßte Steckaufnahme bildet allerdings eine Hinterschneidung, die kaum entformt werden kann. Es wird daher vorteilhaft der sich beim Einsatz eines runden Drahtstückes zwischen den beiden Schenkeln des haarnadelförmigen Endes ergebende Zwickelbereich für die axiale Verankerung des Drahtstückes in der Steckaufnahme herangezogen, indem die Steckaufnahme in diese Zwik- kelbereiche vorstehende Wand abschnitte bildet. Diese vorstehenden Wandabschnitte legen sich vor den die beiden Schenkel miteinander verbindenden, gebogenen Steg des haarnadelförmigen Endes und verhindert somit ein Ausziehen des Drahtstückes aus der Steckaufnahme des Formkörpers. Die Negativform der Steckaufnahme für den die beiden Schenkel miteinander verbindenden Steg des Drahtendes braucht nicht zwangsläufig mit einer Hinterschneidung der in den Zwickelbereich zwischen den beiden Schenkeln vorstehende Wandabschnitte versehen zu werden. Aufgrund des sich beim Einstekken des Drahtendes in die Steckaufnahme ergebenden Druckes zwischen dem Steg und den vorstehenden Wandabschnitten kann sich nämlich durch ein Kaltfließen des Kunststoffes im Bereich des Steges eine an die Stegquerschnittsform angepaßte Vertiefung ausbilden, die für eine formschlüssige Verankerung des haarnadelförmigen Endes in der Steckaufnahme sorgt.In order to create suitable conditions for reaching behind the undercut plug receptacle through the hairpin-shaped curved wire end, the legs of the hairpin-shaped end could converge against the adjoining section of the wire piece, so that the greatest width of the wire end results in the region of the curved web connecting the two legs of the hairpin-shaped end. However, a plug receptacle adapted to such a wire end forms an undercut that can hardly be removed from the mold. It is therefore advantageous to use the gusset area resulting from the use of a round piece of wire between the two legs of the hairpin-shaped end for the axial anchoring of the piece of wire in the plug-in receptacle, in that the plug-in receptacle forms wall sections projecting into these twisted areas. These projecting wall sections lie in front of the curved web of the hairpin-shaped end connecting the two legs and thus prevent the piece of wire from being pulled out of the plug-in receptacle of the molded body. The negative form of the plug-in receptacle for the web of the wire end connecting the two legs does not necessarily have to be provided with an undercut of the wall sections projecting into the gusset region between the two legs. Due to the pressure between the web and the projecting wall sections when the end of the wire is inserted into the plug receptacle, a cold flow of the plastic in the region of the web can result in a depression which is adapted to the web cross-sectional shape and is used for a form-fitting anchoring of the hairpin-shaped end in the plug receptacle provides.
Eine andere Möglichkeit der zugfesten Verankerung besteht darin, den gegen den anderen Schenkel zurückgebogenen Schenkel des haarnadelförmigen Endes des Drahtstückes mit einer vom anderen Schenkel weggerichteten, durch eine Quetschnung gebildeten Verbreiterung zu versehen, die die anschließende Wandung der Steckaufnahme einer Druckbelastung mit der Wirkung unterwirft, daß der Kunststoff im Bereich der Verbreiterung durch ein Kaltfließen verdrängt wird und in der Wandung der Steckaufnahme eine die Verbreiterung aufnehmende Vertiefung entsteht, die eine Hinterschneidung darstellt und für eine Ausziehsicherung des haarnadelförmig gebogenen Endes des Drahtstückes sorgt. Selbstverständlich kann die Verbreiterung des einen Schenkels des haarnadelförmigen Endes auch zusätzlich im Zusammenhang mit den in den Zwickelbereich zwischen den Schenkeln vorstehenden Wandabschnitten der Steckaufnahmen eingesetzt werden, um besonders vorteilhafte Verankerungsbedingungen sicherzustellen. Da die Verbreiterung den gegen den weiterführenden Schenkel zurückgebogenen Schenkel schwächt, bleibt diese Schwächung auf die Belastbarkeit der Verbindung zwischen dem Drahtstück und dem Formkörper ohne Auswirkung. Das Biegen des im Formkörper gehaltenen Drahtstückes belastet ja vor allem den in das Drahtstück unmittelbar übergehenden Schenkel, während der andere zurückgebogene Schenkel lediglich eine Dreh- und Ausziehsicherung übernimmt.Another possibility of the tensile anchoring is to provide the leg of the hairpin-shaped end of the wire piece which is bent back against the other leg with a widening which is directed away from the other leg and is formed by a squeeze and which subjects the subsequent wall of the plug receptacle to a pressure load with the effect that the plastic in the area of the widening is displaced by a cold flow and in the wall of the plug-in receptacle a widening-receiving depression is created, which represents an undercut and ensures that the hairpin-shaped bent end of the wire piece is secured against being pulled out. Of course, the broadening of one Legs of the hairpin-shaped end can also be used in connection with the wall sections of the plug-in receptacles projecting into the gusset area between the legs in order to ensure particularly advantageous anchoring conditions. Since the widening weakens the leg bent back against the further leg, this weakening has no effect on the load-bearing capacity of the connection between the wire piece and the molded body. The bending of the piece of wire held in the molded body stresses above all the leg directly passing into the piece of wire, while the other bent-back leg merely takes over rotation and pull-out protection.
Kurze Beschreibung der ZeichnungBrief description of the drawing
In der Zeichnung ist der Erfindungsgegenstand beispielsweise dargestellt. Es zeigen:The subject matter of the invention is shown in the drawing, for example. Show it:
Fig. 1 eine erfindungsgemäße formschlüssige Verbindung zwischen einem Drahtstück zum Halten einer Nasenauflage und einem Nasensteg aus Kunststoff für eine Brille in einer zum Teil aufgerissenen Ansicht,1 is a positive connection according to the invention between a piece of wire for holding a nose pad and a plastic nose bridge for a pair of glasses in a partially opened view,
Fig. 2 einen Schnitt nach der Linie ll-ll der Fig. 1 ,2 shows a section along the line II-II of FIG. 1,
Fig. 3 einen Schnitt nach der Linie lll-lll der Fig. 1 in einem größeren Maßstab undFig. 3 is a section along the line III-III of Fig. 1 on a larger scale and
Fig. 4 eine Konstruktionsvariante einer formschlüssigen Verbindung in einem Längsschnitt in einem größeren Maßstab.Fig. 4 shows a construction variant of a positive connection in a longitudinal section on a larger scale.
Weg zur Ausführung der ErfindungWay of carrying out the invention
Der Formkörper 1 wird gemäß den dargestellten Ausführungsbeispielen durch den Nasensteg 2 einer nicht näher gezeigten Brille gebildet, deren Nasenauflagen 3 mit Hilfe von Dratstücken 4 am Nasensteg 2 befestigt sind. Zu diesem Zweck bildet das Drahtstück 4 ein haarnadelförmiges Ende 5, dessen Schenkel mit 6 und 7 bezeichnet sind. Im Nasensteg 2 sind Steckaufnahmen 8 vorgesehen, die der Umrißform des haarnadelförmigen Endes 5 der Drahtstücke 4 entsprechen und die haarnadelförmigen Enden 5 der Drahtstücke 4 aufnehmen. Wie die Fig. 3 erkennen läßt, weist die Steckaufnahme 8 gegen den Zwickelbereich zwischen den beiden Schenkeln 6 und 7 vorstehende Wandabschnitte 9 auf, die sich bis zum die beiden Schenkeln 6 und 7 verbindenden gebogenen Steg des haarnadelförmigen Endes 5 erstrecken, so daß diese vorstehenden Wandabschnitte 9 von diesem Steg hintergriffen werden, was eine zugfeste Verankerung des haarnadelförmigen Endes 5 in der Steckaufnahme 8 mit sich bringt. Aufgrund der Elastizität des Kunststoffes des Formstückes 1 können die vorstehenden Wandabschnitte 9 beim Einschieben des haarnadelförmigen Endes 5 in die Steckaufnahme 8 elastisch verformt werden, bis der Steg zwischen den Schenkeln 6 und 7 in die Hinterschneidung am Ende der Wandabschnitte 9 einrastet. Eine solche Hinterschneidung muß jedoch nicht von vornherein vorgesehen sein. Aufgrund der durch den Steg des eingeschobenen Drahtendes 5 auf die durchgehenden Wandabschnitte 9 ausgeübten Druckes ergibt sich nämlich ein Kaltfließen des Kunststoffes im Bereich des Steges, so daß eine der Querschnittsform des Steges angepaßte Vertiefung entsteht, die für den formschlüssigen Halt des Steges in der Steckaufnahme 8 sorgt.The molded body 1 is formed according to the illustrated embodiments by the nose bridge 2 of a pair of glasses, not shown, whose nose pads 3 are fastened to the nose bridge 2 with the aid of trimmings 4. For this purpose, the wire piece 4 forms a hairpin-shaped end 5, the legs of which are designated 6 and 7. Plug-in receptacles 8 are provided in the nose bridge 2, which have the outline shape of the hairpin-shaped end 5 of the wire pieces 4 correspond and take up the hairpin-shaped ends 5 of the wire pieces 4. As can be seen in FIG. 3, the plug receptacle 8 has projecting wall sections 9 against the gusset area between the two legs 6 and 7, which extend to the curved web of the hairpin-shaped end 5 connecting the two legs 6 and 7, so that these protrude Wall sections 9 are engaged by this web, which entails a tensile anchoring of the hairpin-shaped end 5 in the plug receptacle 8. Due to the elasticity of the plastic of the molding 1, the projecting wall sections 9 can be elastically deformed when the hairpin-shaped end 5 is inserted into the plug-in receptacle 8 until the web between the legs 6 and 7 engages in the undercut at the end of the wall sections 9. However, such an undercut does not have to be provided from the outset. Due to the pressure exerted by the web of the inserted wire end 5 on the continuous wall sections 9, there is a cold flow of the plastic in the region of the web, so that a recess adapted to the cross-sectional shape of the web is created, which for the positive retention of the web in the plug-in receptacle 8 provides.
Gemäß dem Ausführungsbeispiel nach der Fig. 4 weist der zurückgebogene Schenkel 6 des haarnadelförmigen Endes 5 eine durch ein Quetschen erzeugte Verbreiterung 10 auf, die vom Schenkel 7 weggerichtet ist. Diese Verbreiterung 10 bedingt eine Druckbelastung der Wandung der Steckaufnahme 8, so daß der Kunststoff des Nasensteges 2 in diesem Bereich durch ein Kaltfließen dauerhaft verformt wird und eine Vertiefung 11 bildet, in der die Verbreiterung 10 verrastet, wodurch das haarnadelförmige Ende 5 des Drahtstückes 4 in der jeweiligen Steckaufnahme 8 zugfest verankert wird. Die Vertiefung 11 ergibt ja eine Hinterschneidung der Steckaufnahme 8, die von der Verbreiterung 10 hintergriffen wird.According to the exemplary embodiment according to FIG. 4, the bent-back leg 6 of the hairpin-shaped end 5 has a widening 10 which is produced by squeezing and which is directed away from the leg 7. This widening 10 causes a pressure load on the wall of the plug receptacle 8, so that the plastic of the nose bridge 2 is permanently deformed in this area by cold flow and forms a depression 11 in which the widening 10 latches, as a result of which the hairpin-shaped end 5 of the wire piece 4 in the respective connector 8 is anchored tensile. The recess 11 results in an undercut of the plug receptacle 8, which is widened behind by the widening 10.
Am den Nasenauflagen 3 zugehörigen Ende bilden die Drahtstücke 4 gebogene Ösen 12 die in hinterschnittene Aufnahmen 13 der Nasenauflagen 3 selbst- verrastend eingreifen, wie dies der Fig. 2 entnommen werden kann. Es ergeben sich somit sowohl hinsichtlich der Nasenauflagen 3 als auch bezüglich des Nasensteges 2 einfache Verbindungen, die den jeweiligen Anforderungen an die Belastbarkeit genügen. At the end associated with the nose pads 3, the wire pieces 4 form curved eyelets 12 which, in undercut receptacles 13 of the nose pads 3, engage in a latching manner, as can be seen in FIG. 2. This results in simple connections both with regard to the nose pads 3 and with regard to the nose bridge 2, which meet the respective requirements for the load-bearing capacity.

Claims

P a t e n t a n s p r ü c h e : Patent claims:
1. Formschlüssige Verbindung zwischen einem Drahtstück (4) und einem aus Kunststoff gespritzten Formkörper (1), insbesondere für eine Brille, wobei ein Ende des Drahtstückes (4) im Formkörper (1) über zwei nebeneinander angeordnete Abschnitte einer Halterung verankert ist, dadurch gekennzeichnet, daß das Drahtstück (4) ein haarnadelförmig gebogenes Ende (5) aufweist, dessen Schenkel (6, 7) die Halterung bilden, und mit dem haarnadelförmig gebogenen Ende (5) in eine an die Haarnadelform des Drahtendes (5) angepaßte, eine Hinterschneidung bildende Steckaufnahme (8) des Formkörpers (1) formschlüssig eingreift.1. Positive connection between a piece of wire (4) and a molded body (1) molded from plastic, in particular for glasses, wherein one end of the wire piece (4) is anchored in the molded body (1) via two sections of a holder arranged next to one another, characterized that the wire piece (4) has a hairpin-shaped end (5), the legs (6, 7) of which form the holder, and with the hairpin-shaped end (5) into an undercut adapted to the hairpin shape of the wire end (5) Forming plug-in receptacle (8) of the molded body (1) engages in a positive manner.
2. Verbindung nach Anspruch 1 , dadurch gekennzeichnet, daß der gegen den anderen Schenkel (7) zurückgebogene Schenkel (6) des haarnadelförmigen Endes (5) des Drahtstückes (4) eine vom anderen Schenkel (7) weggerichtete, durch eine Quetschung gebildete Verbreiterung (10) aufweist. 2. Connection according to claim 1, characterized in that the leg (6) bent back against the other leg (7) of the hairpin-shaped end (5) of the wire piece (4) is directed away from the other leg (7) and is formed by a widening ( 10).
EP03714523A 2002-04-03 2003-03-27 Form-fitting connection between a piece of wire and an injection-molded plastic body, particularly for eyeglasses Withdrawn EP1490725A2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AT0051702A AT411800B (en) 2002-04-03 2002-04-03 MOLDED CONNECTION BETWEEN A WIRE PIECE AND A MOLDED-IN MOLDED BODY, IN PARTICULAR FOR A GLASSES
AT5172002 2002-04-03
PCT/AT2003/000086 WO2003083554A2 (en) 2002-04-03 2003-03-27 Form-fitting connection between a piece of wire and an injection-molded plastic body, particularly for eyeglasses

Publications (1)

Publication Number Publication Date
EP1490725A2 true EP1490725A2 (en) 2004-12-29

Family

ID=28458154

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03714523A Withdrawn EP1490725A2 (en) 2002-04-03 2003-03-27 Form-fitting connection between a piece of wire and an injection-molded plastic body, particularly for eyeglasses

Country Status (11)

Country Link
US (1) US7147322B2 (en)
EP (1) EP1490725A2 (en)
JP (1) JP2006508374A (en)
KR (1) KR20040094750A (en)
CN (1) CN1307464C (en)
AT (1) AT411800B (en)
AU (1) AU2003218883A1 (en)
CA (1) CA2473583A1 (en)
HK (1) HK1077365A1 (en)
NZ (1) NZ533975A (en)
WO (1) WO2003083554A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT500856B8 (en) 2005-04-25 2007-02-15 Silhouette Int Schmied Ag NOSES SUPPORT FOR A GLASS
ES2709383T3 (en) * 2014-03-28 2019-04-16 Konrad Hofmann Discharge splint arrangement
DE202015100067U1 (en) 2015-01-08 2015-02-19 Jan Fritz Usadel nose pad
CN105182558B (en) * 2015-07-17 2017-10-31 温州市八达光学有限公司 A kind of readily removable glasses of eyeglass

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1439741A (en) * 1922-05-10 1922-12-26 Shur On Optical Company Inc Ophthalmic mounting

Family Cites Families (11)

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Publication number Priority date Publication date Assignee Title
GB775293A (en) * 1953-03-30 1957-05-22 Norman William Chappell Improvements in spectacle frames
GB927499A (en) * 1960-07-30 1963-05-29 Francis Owen Wheway Spectacle frames
DE3414686A1 (en) * 1984-04-18 1985-10-24 Artur 7250 Leonberg Weiss Fastening device on spectacle frames
WO2000029896A1 (en) 1998-11-17 2000-05-25 Goldsworth - Comércio E Marketting Lda. Frame for eyeglasses
US6007200A (en) * 1999-03-08 1999-12-28 Aoyama Gankyo Kabushiki Kaisha Lens holding mechanism of rimless spectacles
DE19958005C1 (en) 1999-12-02 2001-07-26 Rainer Weber glasses
ITBO20000523A1 (en) 2000-09-08 2002-03-08 Roberto Carlon PERFECTED DAY GLASSES
DE20022038U1 (en) * 2000-12-28 2001-03-01 Lin, Liken, Tu-Cheng, Taipeh Pad bridge of an eyeglass frame
US6447117B1 (en) 2001-03-12 2002-09-10 Rene Estrada Eyeglass lens mounting system
WO2002095482A2 (en) * 2001-05-21 2002-11-28 Optische Werke G. Rodenstock Glasses and fixing device
US6925909B2 (en) * 2003-10-08 2005-08-09 Robert J. Crosby Fastener holding device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1439741A (en) * 1922-05-10 1922-12-26 Shur On Optical Company Inc Ophthalmic mounting

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO03083554A3 *

Also Published As

Publication number Publication date
KR20040094750A (en) 2004-11-10
WO2003083554A2 (en) 2003-10-09
WO2003083554A3 (en) 2004-03-11
NZ533975A (en) 2006-03-31
ATA5172002A (en) 2003-10-15
US7147322B2 (en) 2006-12-12
CA2473583A1 (en) 2003-10-09
CN1625708A (en) 2005-06-08
HK1077365A1 (en) 2006-02-10
AT411800B (en) 2004-05-25
JP2006508374A (en) 2006-03-09
CN1307464C (en) 2007-03-28
US20050162608A1 (en) 2005-07-28
AU2003218883A1 (en) 2003-10-13

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