EP0352871B1 - Box-like formed spring - Google Patents

Box-like formed spring Download PDF

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Publication number
EP0352871B1
EP0352871B1 EP89202206A EP89202206A EP0352871B1 EP 0352871 B1 EP0352871 B1 EP 0352871B1 EP 89202206 A EP89202206 A EP 89202206A EP 89202206 A EP89202206 A EP 89202206A EP 0352871 B1 EP0352871 B1 EP 0352871B1
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EP
European Patent Office
Prior art keywords
spring
base
plug according
box
cut
Prior art date
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EP89202206A
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German (de)
French (fr)
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EP0352871A2 (en
EP0352871A3 (en
Inventor
Jörg Deibel
Alfred Dipl.-Ing. Könnemann
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Grote and Hartmann GmbH and Co KG
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Grote and Hartmann GmbH and Co KG
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Application filed by Grote and Hartmann GmbH and Co KG filed Critical Grote and Hartmann GmbH and Co KG
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Publication of EP0352871A3 publication Critical patent/EP0352871A3/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/15—Pins, blades or sockets having separate spring member for producing or increasing contact pressure
    • H01R13/18—Pins, blades or sockets having separate spring member for producing or increasing contact pressure with the spring member surrounding the socket
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/10—Sockets for co-operation with pins or blades
    • H01R13/11—Resilient sockets
    • H01R13/112—Resilient sockets forked sockets having two legs

Definitions

  • the invention relates to a box spring.
  • a known box spring has a contact area consisting of a box which is open at the top and U-shaped in cross section and on which a ceiling wall is supported as a separate part.
  • the wall is bent inwards, with the deepest point in the middle and serving as a contact point.
  • the wall should also ensure the spring forces required for the contact pin.
  • This known embodiment of a box spring has no sufficient spring action and it is difficult to manufacture.
  • a known contact spring is described in DE-A-30 14 614 and shown in the drawing.
  • this known embodiment there is a risk that the spring arms of the box spring are bent over, whereby the suspension is impaired.
  • the object of the invention is to provide a box spring, the contact point of which lies in the region of the plug-in opening, which ensures optimum suspension of the spring arms and which is easy to produce.
  • the invention provides to combine a flat fork spring with an over-spring with special over-spring arms.
  • the combination of a flat fork spring with an over-spring is known per se from DE-A-32 48 078, but this known embodiment is a relatively large contact element and not a miniaturized form.
  • the flat fork spring is designed as a double-arm flat fork spring.
  • the spring is box-shaped and has four spring arms that extend forward.
  • a detent spring arm that extends opposite to the spring arms is cut out from the box shape of the spring.
  • the Overspring rests on the double flat spring by cutting-in tabs in its rear edge area and engaging behind the edges of the spring arm base of the double flat spring and also bent webs in the area of the connection of the spring arms against the front edge of the spring arm base of the double flat spring.
  • This known contact element in miniaturized form is not readily usable for the purposes of the invention because it is too bulky.
  • the new miniature box spring consists of the flat fork spring 1 and the spring 2.
  • the flat fork spring 1 has a conductor connection part 3, which is only shown schematically and can be a conductor claw or a soldering element or a clamping cutting element or the like.
  • the conductor connection part 3 merges into a spring arm base 4 with a U-shaped cross section, which has a base 5 and two side walls 6.
  • a spring arm 7 is connected to each side wall and extends forward.
  • the spring arms 7 are bent starting to converge from the side walls 6 and touch in a contact line 8.
  • the spring arms 7 diverge again from the contact line 8 and form a finding funnel 9.
  • the contact is provided for the preassembly state of the flat fork spring. The purpose of this pre-assembly position is explained below.
  • the expanded position of the spring arms 7 shown in dashed lines in FIG. 1 represents the position of the spring arms in the assembled state of the box spring.
  • the spring arms 7 are made wider than the height of the walls 6, a step 10 being provided in the transition area.
  • a short tab 11 extends from the bottom 5 to the front.
  • a tongue 12 which extends forward is cut into the base 5 in the direction of the conductor connection part 3 at a distance from the step 10 and is bent outwards.
  • the over-spring 2 is preferably made of steel and is essentially box-shaped with a bottom 13, a top wall 14 and two side walls 15.
  • the top wall 14 has the production-related abutting edges 16.
  • the side walls 15 and the bottom 13 are extended to the rear and form a bearing element 17 with a U-shaped cross section with the side wall webs 17a and the bottom web 17b with the rear edge 17c.
  • the side wall webs 17a have a short incision 18 directed towards the floor web 17b in the connection area.
  • a detent spring arm 21 connected in the region of the plug-in opening 20 is cut free and bent outwards. Furthermore, there are 2 cutouts 22 and 23 in the longitudinal edge area of the box shape of the spring, the cutouts 22 in the area between the top wall 14 and the side walls 15 being shorter than the cutouts 23 in the area between the bottom 13 and the side walls 15. All four Cutouts 22 and 23 extend rearward from the rear edge 24 of a resulting front box web 25.
  • the free cuts 22 end at a distance from the incision 18, while the free cuts 23 extend to the level of the incision 18 or the bottom web 17b.
  • the corresponding cutout 23 on the right-hand side in plan view (FIG. 3) with an L-shaped cutout 23a preferably forms the cutout for the detent spring arm 21 arranged in the base 13.
  • the spring arms 26 are formed, which are bent towards one another to a defined distance. This distance corresponds about the outside distance of the finding funnel 9 of the flat fork spring 1 in the preassembly state.
  • the rear edge 24 is lengthened by embossing and forms a stop web 28 for the spring-over arms 26, which serves as protection against bending over.
  • the spring-over arms 26 are preferably cut out in an arc starting from the base towards the free end region.
  • the top wall 14 has in the area of the box web 25 on both sides next to the abutting edges incisions 29 running parallel to it.
  • the webs 30 resulting from these incisions 29 are bent inwards.
  • the distance between the cut edges of the webs 30 is equal to the desired distance between the spring arms 7 of the flat fork spring 1 in the contact line 8 in the assembled state of the box spring.
  • such incisions are present in the floor exactly under the incisions 29, from which a web 31 results.
  • the web 31 is also bent inwards.
  • the distance between the cut edges of the web 31 also corresponds to the desired distance between the spring arms 7 in the assembled state of the box spring according to the invention.
  • the spring arms 26 press on the fork spring arms 7, which are supported laterally with the lateral end regions of their contact line 8 on the cutting edges of the webs 30 and 31, which results in a defined distance between the contact line 8 of the fork spring arms 7 and a defined spring force.
  • the fork spring arms 7 can with their funnel area support on the outside on the plug opening side edge 32 of the box web 25, so that an overbend of the fork spring arms 7 can be avoided.
  • the over-spring 2 bears firmly on the flat fork spring 1 by the side wall webs 17a of the bearing element 17 being bent towards the axis 19, so that the cut edge of the side wall webs 17a resulting from the incision 18 engages behind the step 10 of the side walls 6 of the spring arm base 4 of the flat fork spring 1, and by the front edge 12a of the tongue 12 of the spring arm base 4 of the flat fork spring 1 abutting the rear edge 17c of the bottom web 17b of the bearing element 17 of the spring 1.
  • the assembly of the spring is easy because the fork spring arms 7 and the spring arms 26 do not interfere with each other.
  • the spring 2 is pushed over the fork spring, from the front over the finding funnel 9.
  • the finding funnel 9 fits approximately through the gap between the spring arms 26.
  • the length of the spring arms 26 is dimensioned such that they are in the constriction area of the contact point during assembly of the finding funnel are when the webs 30, 31 begin to expand the funnel, the spring arms 26 being arranged at a distance from the fork spring arms.
  • the fork spring arms only press against the spring arms when the widening is complete and the rear edge 17c of the spring spring 2 has hit the front edge 12a of the tongue 12 of the fork spring 1.
  • the spring force of the fork spring arms 7 can also be ensured in an optimal and defined manner, because the fork spring arms 7 are brought from a more or less relaxed position into a slightly tensioned, defined position during assembly.
  • the tab 11 in the bottom 5 of the flat fork spring 1 serves for the detent spring arm 21 of the spring 2 as an abutment against bending.
  • the box spring according to the invention acts with e.g. a square contact pin with 0.6 mm cross-section edge length for electronic components.

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  • Springs (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Fuses (AREA)

Description

Die Erfindung betrifft eine Kastenfeder.The invention relates to a box spring.

Eine bekannte Kastenfeder hat einen Kontaktbereich aus einem oben offenen, im Querschnitt U-förmigen Kasten, auf dem als separates Teil eine Deckenwandung lagert. Die Wandung ist nach innen durchgebogen, wobei die tiefste Stelle in der Mitte liegt und als Kontaktstelle dienen soll. Die Wandung soll außerdem die erforderlichen Federkräfte für den Kontaktstift gewährleisten. Diese bekannte Ausführungsform einer Kastenfeder weist keine genügende Federwirkung auf und ihre Herstellung ist schwierig.A known box spring has a contact area consisting of a box which is open at the top and U-shaped in cross section and on which a ceiling wall is supported as a separate part. The wall is bent inwards, with the deepest point in the middle and serving as a contact point. The wall should also ensure the spring forces required for the contact pin. This known embodiment of a box spring has no sufficient spring action and it is difficult to manufacture.

Bei einer bekannten Kastenfeder dieser Art, die im Kontaktbereich einteilig ausgebildet ist, sind die Seitenwände im Längskantenbereich freigeschnitten sowie leiterkrallenseitig quer zur Längserstreckung durchtrennt und nach innen aufeinanderzu gebogen, wobei sie jedoch auf gegenseitigem Abstand bleiben. Sie bilden die Federarme der Kastenfeder. Der gegenseitige Abstand soll genau 0,3 mm betragen, Die Einstellung und Einhaltung dieses Abstandes ist sehr schwierig. Der Federweg der Federarme ist zu kurz und außerdem liegt die Kontaktstelle zu weit von der Stecköffnung entfernt, so daß ein relativ langer Kontaktstift erforderlich ist.In a known box spring of this type, which is formed in one piece in the contact area, the side walls in the longitudinal edge area are cut free and severed on the conductor claw side transversely to the longitudinal extent and bent toward one another, but they remain at a mutual distance. They form the spring arms of the box spring. The mutual distance should be exactly 0.3 mm. Setting and maintaining this distance is very difficult. The spring arm travel is too short and the contact point is too far from the insertion opening removed so that a relatively long contact pin is required.

Eine bekannte Kontaktfeder ist in der DE-A-30 14 614 beschrieben und zeichnerisch dargestellt. Bei dieser bekannten Ausgestaltung besteht die Gefahr, daß die Federarme der Kastenfeder überbogen werden, wodurch die Federung beeinträchtigt wird.A known contact spring is described in DE-A-30 14 614 and shown in the drawing. In this known embodiment, there is a risk that the spring arms of the box spring are bent over, whereby the suspension is impaired.

Aufgabe der Erfindung ist, eine Kastenfeder zu schaffen, deren Kontaktstelle im Bereich der Stecköffnung liegt, die eine optimale Federung der Federarme gewährleistet und die einfach herstellbar ist.The object of the invention is to provide a box spring, the contact point of which lies in the region of the plug-in opening, which ensures optimum suspension of the spring arms and which is easy to produce.

Diese Aufgabe wird durch die Merkmale des Hauptanspruches gelöst. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.This object is solved by the features of the main claim. Advantageous developments of the invention are characterized in the subclaims.

Die Erfindung sieht vor, eine Flachgabelfeder mit einer Überfeder mit besonderen Überfederarmen zu kombinieren.The invention provides to combine a flat fork spring with an over-spring with special over-spring arms.

Die Kombination einer Flachgabelfeder mit einer Überfeder ist zwar aus der DE-A- 32 48 078 an sich bekannt, jedoch handelt es sich bei dieser bekannten Ausgestaltung um ein relativ großes Kontaktelement und nicht um eine miniaturisierte Form. Die Flachgabelfeder ist als doppelarmige Flachgabelfeder ausgeführt. Die Überfeder ist kastenförmig und weist vier sich nach vorne erstreckende Überfederarme auf. Darüber hinaus ist aus der Kastenform der Überfeder ein sich entgegengesetzt zu den Überfederarmen erstreckender Rastfederarm freigeschnitten. Die Überfeder lagert auf der Doppelflachfeder, indem in ihrem Hinterkantenbereich eingeschnittene Lappen einwärts gebogen sind und Kanten der Federarmbasis der Doppelflachfeder hintergreifen und außerdem durchgebogene Stege im Bereich der Anbindung der Überfederarme gegen die Vorderkante der Federarmbasis der Doppelflachfeder stoßen. Dieses bekannte Kontaktelement ist in miniaturisierter Form für die Zwecke der Erfindung nicht ohne weiteres brauchbar, weil sie zu sperrig ist.The combination of a flat fork spring with an over-spring is known per se from DE-A-32 48 078, but this known embodiment is a relatively large contact element and not a miniaturized form. The flat fork spring is designed as a double-arm flat fork spring. The spring is box-shaped and has four spring arms that extend forward. In addition, a detent spring arm that extends opposite to the spring arms is cut out from the box shape of the spring. The Overspring rests on the double flat spring by cutting-in tabs in its rear edge area and engaging behind the edges of the spring arm base of the double flat spring and also bent webs in the area of the connection of the spring arms against the front edge of the spring arm base of the double flat spring. This known contact element in miniaturized form is not readily usable for the purposes of the invention because it is too bulky.

Anhand der Zeichnung wird die Erfindung beispielhaft näher erläutert Es zeigen:

  • Fig. 1 eine Draufsicht auf die Flachgabelfeder,
  • Fig. 2 eine Seitenansicht der Flachgabelfeder,
  • Fig. 3 eine Draufsicht auf die Überfeder,
  • Fig. 4 eine Seitenansicht der Überfeder,
  • Fig. 5 eine Draufsicht auf die Kastenfeder,
  • Fig. 6 eine Seitenansicht der Kastenfeder.
The invention is explained in more detail by way of example with reference to the drawing, in which:
  • 1 is a plan view of the flat fork spring,
  • 2 is a side view of the flat fork spring,
  • 3 is a plan view of the spring,
  • 4 is a side view of the spring,
  • 5 is a plan view of the box spring,
  • Fig. 6 is a side view of the box spring.

Die neue Kastenfeder in Miniaturform besteht aus der Flachgabelfeder 1 und der Überfeder 2.The new miniature box spring consists of the flat fork spring 1 and the spring 2.

Die Flachgabelfeder 1 weist ein Leiteranschlußteil 3 auf, das lediglich schematisch dargestellt ist und eine Leiterkralle oder ein Lötelement oder ein Klemmschneidelement oder dgl. sein kann. Das Leiteranschlußteil 3 geht in eine im Querschnitt U-förmige Federarmbasis 4 über, die einen Boden 5 und zwei Seitenwände 6 hat. An jede Seitenwand ist ein Federarm 7 sich nach vorne erstreckend angebunden. Die Federarme 7 sind von den Seitenwänden 6 beginnend aufeinanderzulaufend abgebogen und berühren sich in einer Kontaktlinie 8. Von der Kontaktlinie 8 divergieren die Federarme 7 wieder und bilden einen Findungstrichter 9. Die Berührung ist vorgesehen für den Vormontagezustand der Flachgabelfeder. Der Zweck dieser Vormontagestellung wird weiter unten erläutert. Die in Fig. 1 gestrichelt gezeichnete aufgeweitete Stellung der Federarme 7 stellt die Stellung der Federarme im montierten Zustand der Kastenfeder dar.The flat fork spring 1 has a conductor connection part 3, which is only shown schematically and can be a conductor claw or a soldering element or a clamping cutting element or the like. The conductor connection part 3 merges into a spring arm base 4 with a U-shaped cross section, which has a base 5 and two side walls 6. A spring arm 7 is connected to each side wall and extends forward. The spring arms 7 are bent starting to converge from the side walls 6 and touch in a contact line 8. The spring arms 7 diverge again from the contact line 8 and form a finding funnel 9. The contact is provided for the preassembly state of the flat fork spring. The purpose of this pre-assembly position is explained below. The expanded position of the spring arms 7 shown in dashed lines in FIG. 1 represents the position of the spring arms in the assembled state of the box spring.

Die Federarme 7 sind breiter ausgeführt als die Höhe der Wandungen 6 beträgt, wobei eine Stufe 10 im Übergangsbereich vorgesehen ist. Außerdem erstreckt sich vom Boden 5 eine kurze Lasche 11 nach vorne. Des weiteren ist im Boden 5 inRichtung Leiteranschlußteil 3 im Abstand von der Stufe 10 eine sich nach vorne erstreckende Zunge 12 eingeschnitten und nach außen abgebogen.The spring arms 7 are made wider than the height of the walls 6, a step 10 being provided in the transition area. In addition, a short tab 11 extends from the bottom 5 to the front. Furthermore, a tongue 12 which extends forward is cut into the base 5 in the direction of the conductor connection part 3 at a distance from the step 10 and is bent outwards.

Die Überfeder 2 ist vorzugsweise aus Stahl und im wesentlichen kastenförmig ausgebildet mit einem Boden 13, einer Deckenwandung 14 und zwei Seitenwandungen 15. Die Deckenwandung 14 weist die herstellungsbedingten Stoßkanten 16 auf. Die Seitenwandungen 15 und der Boden 13 sind nach rückwärts verlängert ausgeführt und bilden ein im Querschnitt U-förmiges Lagerelement 17 mit den Seitenwandungsstegen 17a und dem Bodensteg 17b mit der Hinterkante 17c. Die Seitenwandungsstege 17a weisen im Anbindungsbereich einen zum Bodensteg 17b gerichteten kurzen Einschnitt 18 auf.The over-spring 2 is preferably made of steel and is essentially box-shaped with a bottom 13, a top wall 14 and two side walls 15. The top wall 14 has the production-related abutting edges 16. The side walls 15 and the bottom 13 are extended to the rear and form a bearing element 17 with a U-shaped cross section with the side wall webs 17a and the bottom web 17b with the rear edge 17c. The side wall webs 17a have a short incision 18 directed towards the floor web 17b in the connection area.

Im Boden 13 ist in der Draufsicht betrachtet rechtsseitig neben der Längsachse 19 ein im Bereich der Stecköffnung 20 angebundener Rastfederarm 21 freigeschnitten und nach außen abgebogen. Des weiteren befinden sich im Längskantenbereich der Kastenform der Überfeder 2 Freischnitte 22 und 23, wobei die Freischnitte 22 im Bereich zwischen der Deckenwandung 14 und den Seitenwandungen 15 kürzer ausgeführt sind als die Freischnitte 23 im Bereich zwischen dem Boden 13 und den Seitenwandungen 15. Alle vier Freischnitte 22 und 23 erstrecken sich von der Hinterkante 24 eines daraus resultierenden vorderen Kastenstegs 25 nach rückwärts. Die Freischnitte 22 enden im Abstand vom Einschnitt 18, während die Freischnitte 23 bis in Höhe des Einschnitts 18 bzw. des Bodenstegs 17b reichen.Viewed in plan view, in the bottom 13, on the right-hand side next to the longitudinal axis 19, a detent spring arm 21 connected in the region of the plug-in opening 20 is cut free and bent outwards. Furthermore, there are 2 cutouts 22 and 23 in the longitudinal edge area of the box shape of the spring, the cutouts 22 in the area between the top wall 14 and the side walls 15 being shorter than the cutouts 23 in the area between the bottom 13 and the side walls 15. All four Cutouts 22 and 23 extend rearward from the rear edge 24 of a resulting front box web 25. The free cuts 22 end at a distance from the incision 18, while the free cuts 23 extend to the level of the incision 18 or the bottom web 17b.

Vorzugsweise bildet der entsprechende, in der Draufsicht (Fig. 3) rechtsseitige Freischnitt 23 mit einem L-förmigen Freischnitt 23a den Freischnitt für den im Boden 13 angeordneten Rastfederarm 21.The corresponding cutout 23 on the right-hand side in plan view (FIG. 3) with an L-shaped cutout 23a preferably forms the cutout for the detent spring arm 21 arranged in the base 13.

Durch die Freischnitte 22 und 23 und einen Trennschnitt 27 parallel zur Hinterkante 24 werden die Überfederarme 26 gebildet, die nach innen bis auf einen definierten Abstand aufeinanderzugebogen sind. Dieser Abstand entspricht etwa dem Außenabstand des Findungstrichters 9 der Flachgabelfeder 1 im Vormontagezustand. Im Bereich des Trennschnitts 27 ist die Hinterkante 24 durch Prägung verlängert und bildet einen als Überbiegeschutz dienenden Anschlagsteg 28 für die Überfederarme 26. Vorzugsweise sind die Überfederarme 26 von der Basis beginnend zum freien Endbereich hin bogenförmig freigeschnitten.By means of the free cuts 22 and 23 and a separating cut 27 parallel to the rear edge 24, the spring arms 26 are formed, which are bent towards one another to a defined distance. This distance corresponds about the outside distance of the finding funnel 9 of the flat fork spring 1 in the preassembly state. In the region of the separating cut 27, the rear edge 24 is lengthened by embossing and forms a stop web 28 for the spring-over arms 26, which serves as protection against bending over. The spring-over arms 26 are preferably cut out in an arc starting from the base towards the free end region.

Die Deckenwandung 14 weist im Bereich des Kastenstegs 25 beiderseits neben den Stoßkanten dazu parallel verlaufende Einschnitte 29 auf. Die aus diesen Einschnitten 29 resultierenden Stege 30 sind nach innen durchgebogen. Der Abstand der Schnittkanten der Stege 30 ist gleich dem gewünschten Abstand der Federarme 7 der Flachgabelfeder 1 in der Kontaktlinie 8 im monierten Zustand der Kastenfeder. Ebenso sind in der Draufsicht betrachtet genau unter den Einschnitten 29 derartige Einschnitte im Boden vorhanden, woraus ein Steg 31 resultiert. Auch der Steg 31 ist nach innen durchgebogen. Der Abstand der Schnittkanten des Stegs 31 entspricht ebenfalls dem gewünschten Abstand der Federarme 7 im montierten Zustand der erfindungsgemäßen Kastenfeder.The top wall 14 has in the area of the box web 25 on both sides next to the abutting edges incisions 29 running parallel to it. The webs 30 resulting from these incisions 29 are bent inwards. The distance between the cut edges of the webs 30 is equal to the desired distance between the spring arms 7 of the flat fork spring 1 in the contact line 8 in the assembled state of the box spring. Likewise, when viewed in plan view, such incisions are present in the floor exactly under the incisions 29, from which a web 31 results. The web 31 is also bent inwards. The distance between the cut edges of the web 31 also corresponds to the desired distance between the spring arms 7 in the assembled state of the box spring according to the invention.

Die Fig. 5 und 6 verdeutlichen den montierten Zustand der erfindungsgemäßen Kastenfeder. Die Überfederarme 26 drücken auf die Gabelfederarme 7, die sich seitlich mit den seitlichen Endbereichen ihrer Kontaktlinie 8 auf den Schnittkanten der Stege 30 bzw. 31 abstützen, woraus ein definierter Abstand der Kontaktlinie 8 der Gabelfederarme 7 und eine definierte Federkraft resultieren. Die Gabelfederarme 7 können sich mit ihrem Findungstrichterbereich außenseitig auf der stecköffnungsseitigen Kante 32 des Kastenstegs 25 abstützen, so daß eine Überbiegung der Gabelfederarme 7 vermieden werden kann.5 and 6 illustrate the assembled state of the box spring according to the invention. The spring arms 26 press on the fork spring arms 7, which are supported laterally with the lateral end regions of their contact line 8 on the cutting edges of the webs 30 and 31, which results in a defined distance between the contact line 8 of the fork spring arms 7 and a defined spring force. The fork spring arms 7 can with their funnel area support on the outside on the plug opening side edge 32 of the box web 25, so that an overbend of the fork spring arms 7 can be avoided.

Die Überfeder 2 lagert fest auf der Flachgabelfeder 1, indem die Seitenwandungsstege 17a des Lagerelements 17 zur Achse 19 hin abgebogen sind, so daß die aus dem Einschnitt 18 resultierende Schnittkante der Seitenwandungsstege 17a die Stufe 10 der Seitenwände 6 der Federarmbasis 4 der Flachgabelfeder 1 hintergreifen, und indem die Vorderkante 12a der Zunge 12 der Federarmbasis 4 der Flachgabelfeder 1 gegen die Hinterkante 17c des Bodenstegs 17b des Lagerelements 17 der Überfeder 1 stößt.The over-spring 2 bears firmly on the flat fork spring 1 by the side wall webs 17a of the bearing element 17 being bent towards the axis 19, so that the cut edge of the side wall webs 17a resulting from the incision 18 engages behind the step 10 of the side walls 6 of the spring arm base 4 of the flat fork spring 1, and by the front edge 12a of the tongue 12 of the spring arm base 4 of the flat fork spring 1 abutting the rear edge 17c of the bottom web 17b of the bearing element 17 of the spring 1.

Die Montage der Überfeder ist einfach, weil die Gabelfederarme 7 und die Überfederarme 26 sich dabei nicht behindern. Die Überfeder 2 wird über die Gabelfeder geschoben, und zwar von vorne über den Findungstrichter 9. Der Findungstrichter 9 paßt etwa durch den Spalt zwischen den Überfederarmen 26. Die Länge der Überfederarme 26 ist so bemessen, daß sie sich bei der Montage im Einschnürungsbereich der Kontaktstelle des Findungstrichters befinden, wenn die Stege 30, 31 beginnen, den Trichter aufzuweiten, wobei die Überfederarme 26 im Abstand von den Gabelfederarmen angeordnet sind. Die Gabelfederarme drücken erst gegen die Überfederarme,wenn die Aufweitung abgeschlossen ist und die Hinterkante 17c der Überfeder 2 gegen die Vorderkante 12a der Zunge 12 der Gabelfeder 1 gestoßen ist. Auf diese Weise wird eine Überbiegung der Überfederarme 26 während der Montage vermieden und deren Federkraft nicht beeinträchtigt. Die Federkraft der Gabelfederarme 7 kann ebenfalls optimal und definiert gewährleistet werden, weil die Gabelfederarme 7 während der Montage aus einer mehr oder weniger entspannten Stellung in eine leicht gespannte definierte Stellung gebracht werden.The assembly of the spring is easy because the fork spring arms 7 and the spring arms 26 do not interfere with each other. The spring 2 is pushed over the fork spring, from the front over the finding funnel 9. The finding funnel 9 fits approximately through the gap between the spring arms 26. The length of the spring arms 26 is dimensioned such that they are in the constriction area of the contact point during assembly of the finding funnel are when the webs 30, 31 begin to expand the funnel, the spring arms 26 being arranged at a distance from the fork spring arms. The fork spring arms only press against the spring arms when the widening is complete and the rear edge 17c of the spring spring 2 has hit the front edge 12a of the tongue 12 of the fork spring 1. In this way there is an overbending of the spring arms 26 during assembly avoided and their spring force is not impaired. The spring force of the fork spring arms 7 can also be ensured in an optimal and defined manner, because the fork spring arms 7 are brought from a more or less relaxed position into a slightly tensioned, defined position during assembly.

Im montierten Zustand der erfindungsgemäßen Kastenfeder dient die Lasche 11 im Boden 5 der Flachgabelfeder 1 für den Rastfederarm 21 der Überfeder 2 als Widerlager gegen Überbiegung.In the assembled state of the box spring according to the invention, the tab 11 in the bottom 5 of the flat fork spring 1 serves for the detent spring arm 21 of the spring 2 as an abutment against bending.

Die erfindungsgemäße Kastenfeder wirkt mit z.B. einem quadratischen Kontaktstift mit 0.6 mm Querschnittskantenlänge für elektronische Bauelemente zusammen.The box spring according to the invention acts with e.g. a square contact pin with 0.6 mm cross-section edge length for electronic components.

Claims (16)

  1. A spring plug in miniature form having a conducting wire connection (3) and a contact member in the shape of a flat forked spring (1) wherein the flat forked spring (1) has a U-shaped spring arm base with a base (5) and two side walls (6) wherein a forwardly projecting spring arm (7) is attached to each side wall and these spring arms are progressively bent away from the side walls to a mutually intersecting contact line (8) and diverge further from the contact line to form a locating funnel (9) so that a box-shaped upper spring (2) is interlocked on the flat forked spring (1) and in the longitudinal side regions of the box shape of the upper spring there are cut-outs (22 and 23) which extend rearwards from a box pin (25) located in the forward region of the box shape with transverse separating cuts (27) forming forwardly extending tongue-like upper spring arms (26) on the side walls (15) of the upper spring (2) which are bent inwards towards each other and lie on the forked spring arms (17) so that the box pin (25) is located in the region of the contact line (8).
  2. A spring plus according to claim 1, characterised in that the separating cuts (27) run parallel to the rear edge of the box pin (25).
  3. A spring plug according to claim 2, characterised in that in the region of the separating cuts (27) the rear edge (24) is extended by pressing and forms a stop pin (28) for the upper spring arm (26) which prevents excessive bending.
  4. A spring plug according to one or more of claims 1 to 3, characterised in that the upper spring arms (26) are cut out in a curved shape from the base to the free terminal region.
  5. A spring plug according to one or more of claims 1 to 4, characterised in that the upper spring arms (26) extend to shortly before the contact line (8).
  6. A spring plug according to one or more of claims 1 to 5, characterised in that the upper spring (2) has a base (13), a covering wall (14) with contacting edges (16) and two side walls (15).
  7. A spring plug according to claim 6, characterised in that the side walls (15) and the base (13) of the upper spring (2) are extended rearwards and form a supporting member (17) of U-shaped cross-section with side wall pins (17a) and a base pin (17b) with the rear edge (17c).
  8. A spring plug according to one or more of claims 1 to 7, characterised in that a short plate (11) extends forwards from the base (5) of the flat forked spring (1).
  9. A spring plug according to one or more of claims 1 to 8, characterised in that the spring arms (7) of the flat forked spring (1) are made broader that the height of the side walls (6) so that steps (10) are formed in the transitional region and the upper spring (2) has side wall pins (17a) formed by cut-outs (18) which are bent inwards towards the longitudinal axis and engage one of the steps (10) of the flat forked spring (1).
  10. A spring plug according to claim 9, characterised in that the upper cut-outs (22) in the region between the covering wall (14) and the side walls (15) are made shorter than the lower cut-outs (23) in the region between the base (13) and the side walls (15) and the upper cut-outs (22) end at a distance from the corresponding recess (18), while the lower cut-outs (23) extend as far as the corresponding recess (18) or base pin (17b).
  11. A spring plug according to one or more of claims 1 to 10, characterised in that the covering wall (14) of the box shape in the region of the box pin (25) has substantially parallel recesses (29) alongside the contact edges on both sides giving rise to pins (30) which are bent inwards and in that such recesses are present in the base directly beneath the recesses (29) when viewed in plan giving rise to a pin (31) which is likewise bent inwards, wherein the forked spring arms (7) rest on the cut edges of the pins (30 and 31) in the vicinity of their lines of contact (8).
  12. A spring plug according to one or more of claims 1 to 11, characterised in that the forked spring arms (7) are supported by means of their locating funnel region on the pin opening side edge (32) of the box pin (25) to prevent excessive bending of the forked spring arms (7).
  13. A spring plug according to one or more of claims 1 to 12, characterised in that a catch spring arm (21) attached in the vicinity of the box pin (25) is cut out in the base (13) of the upper spring (2) on the top side when viewed in plan alongside the longitudinal axis (19) of the box spring.
  14. A spring plug according to claim 13, characterised in that the recess (23) on the top when viewed in plan having an L-shaped cut-out (23a) forms the recess for the catch spring arm (21) located in the base (13).
  15. A spring plug according to one or more of claims 1 to 14, characterised in that the flat forked spring (1) in the base (5) has a cut-out tongue (12) which is bent outwards and extends in the direction of the conductor connecting member (3) from step (10) which contacts a rear edge (17c) of the upper spring (2) with its front edge (12a).
  16. A spring plug according to one or more of claims 8 to 15, characterised in that the plate (11) in the base (5) of the flat forked spring (1) is arranged in such a way that it acts as a stop against excessive bending of the catch spring arm (21) of the upper spring (2).
EP89202206A 1985-03-26 1985-12-04 Box-like formed spring Expired - Lifetime EP0352871B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19853510865 DE3510865A1 (en) 1985-03-26 1985-03-26 BOX SPRING
DE8508964U DE8508964U1 (en) 1985-03-26 1985-03-26 Box spring
DE3510865 1985-03-26

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP85115392.4 Division 1985-12-04

Publications (3)

Publication Number Publication Date
EP0352871A2 EP0352871A2 (en) 1990-01-31
EP0352871A3 EP0352871A3 (en) 1990-03-21
EP0352871B1 true EP0352871B1 (en) 1993-03-17

Family

ID=37857093

Family Applications (2)

Application Number Title Priority Date Filing Date
EP89202206A Expired - Lifetime EP0352871B1 (en) 1985-03-26 1985-12-04 Box-like formed spring
EP85115392A Expired - Lifetime EP0196367B1 (en) 1985-03-26 1985-12-04 Box-like formed spring

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP85115392A Expired - Lifetime EP0196367B1 (en) 1985-03-26 1985-12-04 Box-like formed spring

Country Status (2)

Country Link
EP (2) EP0352871B1 (en)
DE (2) DE8508964U1 (en)

Cited By (3)

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DE29719153U1 (en) * 1997-10-28 1999-03-04 Grote & Hartmann Gmbh & Co Kg, 42369 Wuppertal Miniaturized plug contact element
DE10034862A1 (en) * 2000-07-18 2002-01-31 Grote & Hartmann Electrical miniaturized contact element has upper spring arm joined to rear edges and bent inwards to load corresponding contact spring arm of flat fork spring contact element
DE10335196B3 (en) * 2003-07-30 2005-04-07 Yazaki Europe Ltd., Hemel Hempstead Contact socket for a flat plug

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DE8713038U1 (en) * 1987-09-28 1987-11-19 Amp Deutschland Gmbh, 6070 Langen Socket-type electrical connection
DE3817803C3 (en) * 1988-05-26 1995-04-20 Reinshagen Kabelwerk Gmbh Electrical flat connector
DE8914952U1 (en) * 1989-12-18 1991-04-18 Grote & Hartmann Gmbh & Co Kg, 5600 Wuppertal Electrical contact socket for a flat pin
DE9017229U1 (en) * 1990-12-20 1992-04-23 Grote & Hartmann Gmbh & Co Kg, 5600 Wuppertal Double flat spring contact with stop device
DE9017536U1 (en) * 1990-12-28 1991-03-21 Amp Inc., Harrisburg, Pa. Connector socket
DE9106773U1 (en) * 1991-06-03 1991-07-18 Amp Inc., Harrisburg, Pa. Electrical plug contact
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DE4203379A1 (en) * 1992-02-06 1993-08-12 Daut & Rietz Trw U=shaped spring contact for electric flat connector - has openings in strips along base of upper spring element giving clearance for deflection of contact arms
DE9202366U1 (en) * 1992-02-24 1993-06-17 Siemens AG, 8000 München Contact spring with a locking sleeve designed as an overspring
DE9211819U1 (en) * 1992-07-07 1993-11-04 Grote & Hartmann Electrical contact element
DE4227287A1 (en) * 1992-08-18 1994-02-24 Framatome Connectors Int Electrical spring contact
DE4312641C2 (en) * 1993-04-19 1995-10-12 Grote & Hartmann Electrical contact sleeve
FR2713833B1 (en) * 1993-12-15 1996-02-09 Cinch Connecteurs Sa Female electrical contact member and element of electrical connector housing intended to receive such a member.
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DE19535148A1 (en) * 1995-09-21 1997-03-27 Whitaker Corp Part of an electrical contact and electrical contact
US5911603A (en) * 1996-07-22 1999-06-15 The Whitaker Corporation Single piece electrical receptacle terminal for mating with a pin contact
FR2765033B1 (en) * 1997-06-24 1999-08-06 Framatome Connectors Int MINIATURE ELECTRICAL CONTACT
FR2775132B1 (en) * 1998-02-16 2002-12-27 Framatome Connectors Int ELECTRIC CAGE CONNECTION TERMINAL, PRE-STRESSED FOR CONTACT BLADES
FR2775131B1 (en) * 1998-02-16 2003-01-10 Framatome Connectors Int ELECTRIC CAGE CONNECTION TERMINAL
FR2775130B1 (en) * 1998-02-16 2000-04-28 Framatome Connectors Int FEMALE ELECTRIC CONTACT AND TERMINAL COMPRISING SUCH A CONTACT
WO1999041807A1 (en) * 1998-02-16 1999-08-19 Framatome Connectors International Electrical connection terminal with a cage
DE10013840C2 (en) * 2000-03-21 2003-05-08 Grote & Hartmann Electrical contact element
DE102005042653A1 (en) * 2005-09-08 2007-03-15 Robert Bosch Gmbh Socket contact with overspring with a designated opening in the insertion tabs
US9825393B1 (en) * 2017-01-26 2017-11-21 Te Connectivity Corporation Electrical contact having contact surfaces in two planes perpendicular to each other

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DE3014614A1 (en) * 1980-04-16 1981-11-12 Bunker Ramo Corp., 60521 Oak Brook, Ill. Compression contact spring for electrical plug connector - formed from pre-stamped plate folded together and having projecting tongue for securing inside housing
DE3212579A1 (en) * 1982-04-03 1983-10-13 Grote & Hartmann Gmbh & Co Kg, 5600 Wuppertal DOUBLE FLAT SPRING CONTACT
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US4531808A (en) * 1983-05-16 1985-07-30 Ford Motor Company Blade coupling terminal

Cited By (5)

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Publication number Priority date Publication date Assignee Title
DE29719153U1 (en) * 1997-10-28 1999-03-04 Grote & Hartmann Gmbh & Co Kg, 42369 Wuppertal Miniaturized plug contact element
DE10034862A1 (en) * 2000-07-18 2002-01-31 Grote & Hartmann Electrical miniaturized contact element has upper spring arm joined to rear edges and bent inwards to load corresponding contact spring arm of flat fork spring contact element
DE10034862B4 (en) * 2000-07-18 2009-06-25 Lear Corp., Southfield Electrical contact element
DE10335196B3 (en) * 2003-07-30 2005-04-07 Yazaki Europe Ltd., Hemel Hempstead Contact socket for a flat plug
US7014515B2 (en) 2003-07-30 2006-03-21 Yazaki Europw Ltd. Female terminal for a flat male terminal

Also Published As

Publication number Publication date
DE3510865A1 (en) 1986-10-02
EP0352871A2 (en) 1990-01-31
EP0196367A1 (en) 1986-10-08
EP0352871A3 (en) 1990-03-21
DE3510865C2 (en) 1991-01-03
DE8508964U1 (en) 1986-12-18
EP0196367B1 (en) 1990-06-27

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