EP0013308B1 - Double-flat contact spring - Google Patents

Double-flat contact spring Download PDF

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Publication number
EP0013308B1
EP0013308B1 EP79104377A EP79104377A EP0013308B1 EP 0013308 B1 EP0013308 B1 EP 0013308B1 EP 79104377 A EP79104377 A EP 79104377A EP 79104377 A EP79104377 A EP 79104377A EP 0013308 B1 EP0013308 B1 EP 0013308B1
Authority
EP
European Patent Office
Prior art keywords
spring arm
spring
base
tied
web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP79104377A
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German (de)
French (fr)
Other versions
EP0013308A1 (en
Inventor
Alfred Könnemann
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.)
Grote and Hartmann GmbH and Co KG
Original Assignee
Grote and Hartmann GmbH and Co KG
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 Grote and Hartmann GmbH and Co KG filed Critical Grote and Hartmann GmbH and Co KG
Publication of EP0013308A1 publication Critical patent/EP0013308A1/en
Application granted granted Critical
Publication of EP0013308B1 publication Critical patent/EP0013308B1/en
Expired legal-status Critical Current

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Classifications

    • 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
    • H01R13/113—Resilient sockets co-operating with pins or blades having a rectangular transverse section

Definitions

  • the invention relates to a double flat spring formed in one piece from a sheet metal stamped part with a central base part, a claw part adjoining it in the longitudinal direction at one end and a contact spring part adjoining the other end with a pair of double spring arms angled at right angles to one side with respect to the claw part, the contact spring part being two opposite one another has arranged spring arm pairs, which are each connected to a spring arm base and the spring arm bases are connected to one another on the outside via a web.
  • a double flat spring of the generic type is described in DE-A1-2418 019. This double flat spring does not appear to have a dimensional stability that meets the technical requirements and therefore there is a risk that the spring arms can be easily bent over.
  • the invention has created a double flat spring with increased dimensional stability, which is characterized in particular in that bending of the contact spring part is avoided when the spring arms are loaded.
  • the double flat spring according to the invention has the claw part 1 and the contact spring part 2, which are connected to one another via a base part 3.
  • the claw part 1 is constructed in a manner known per se and essentially preferably consists of a conductor claw 4 and an insulation claw 5.
  • the contact spring part 2 has two known, oppositely arranged spring arm pairs 6, which are each connected to a spring arm base 8 or 9, the two spring arm bases 8, 9 being connected to one another via an outside web 10.
  • the web 10 is arranged in the board parallel to the longitudinal axis of the claw part 1 and, in relation to the latter in the shaped state of the double flat spring, represents a return bend of the spring arm base 8 to the spring arm base 9 in such a way that the spring arm pair 6 is arranged above the spring arm pair 7 and itself this results in the shape of the contact spring part 2 at right angles to the claw part 1 to one side.
  • the base part 3 forms an abutment for the spring arm pair 6 or the spring arm base 8.
  • the base part 3 is designed like a cage and, in the embodiment according to FIGS. 1 and 4, consists of the one with the spring arm base 9 the connecting web 11 connected floor 12 and the sideways raised obliquely raised side walls 13.
  • the side walls 13 merge in the front into the rolled abutment lugs 14 which overlap a support web 15 connected to the spring arm base 8 and thereby the bending of the contact spring part 2 when the spring arms are loaded support.
  • the cage is formed by the bottom 12, the side walls 13, the lugs 14 and the web 15. It is expedient if the support web 15 has a support edge 16 which abuts the front edge of a side wall 13.
  • FIGS. 5 to 8 shows an angled double flat spring with a locking arm.
  • the cage of the base part 3 is also designed somewhat differently than in the case of FIGS. 1 to 4.
  • the locking arm 17 adjoins the support web 15 and is angled upward.
  • a rolled-in abutment nose 14a which is cut with respect to the spring arm pair 7, serves for support. It is the abutment for both the double flat spring and for the locking arm 17.
  • the support web 15 is partially cut in relation to the spring arm pair 6, which facilitates the shaping.
  • the side wall 13a has a guide web 18 which is pulled upward in its extension and which can cooperate with guide elements in a housing (not shown).
  • the embodiment according to FIGS. 5 to 8 is similar to that according to FIGS. 1 to 4, which is expressed by the choice of the same numbers.

Landscapes

  • Springs (AREA)
  • Contacts (AREA)

Description

Die Erfindung bezieht sich auf eine einstückig aus einem Blechstanzteil gebildete Doppelflachfeder mit einem mittleren Basisteil, sich in Längsrichtung einendig daran anschliessendem Krallenteil und sich anderendig anschliessendem Kontaktfederteil mit einem in bezug auf den Krallenteil rechtwinklig zu einer Seite abgewinkelten Doppelfederarmpaar, wobei der Kontaktfederteil zwei übereinander sich gegenüberliegend angeordnete Federarmpaare aufweist, die jeweils an einer Federarmbasis angebunden sind und die Federarmbasen aussenseitig über einen Steg miteinander verbunden sind.The invention relates to a double flat spring formed in one piece from a sheet metal stamped part with a central base part, a claw part adjoining it in the longitudinal direction at one end and a contact spring part adjoining the other end with a pair of double spring arms angled at right angles to one side with respect to the claw part, the contact spring part being two opposite one another has arranged spring arm pairs, which are each connected to a spring arm base and the spring arm bases are connected to one another on the outside via a web.

Eine Doppelflachfeder der gattungsgemässen Art ist in der DE-A1-2418 019 beschrieben. Bei dieser Doppelflachfeder erscheint eine den technischen Anforderungen genügende Formbeständigkeit nicht gegeben und daher die Gefahr zu bestehen, dass die Federarme leicht überbogen werden können.A double flat spring of the generic type is described in DE-A1-2418 019. This double flat spring does not appear to have a dimensional stability that meets the technical requirements and therefore there is a risk that the spring arms can be easily bent over.

Sinngemäss ist es Aufgabe der Erfindung, eine Doppelflachfeder der eingangs näher erwähnten Art in bezug auf die Formbeständigkeit zu verbessern.Analogously, it is an object of the invention to improve a double flat spring of the type mentioned at the outset in relation to the dimensional stability.

Diese Aufgabe wird alternativ durch die Merkmale der Ansprüche 1 und 2 gelöst, während in den abhängigen Ansprüchen vorteilhafte Ausgestaltungen der Erfindung gekennzeichnet sind.This object is alternatively achieved by the features of claims 1 and 2, while advantageous embodiments of the invention are characterized in the dependent claims.

Durch die Erfindung ist eine Doppelflachfeder mit erhöhter Formbeständigkeit geschaffen worden, die sich insbesondere dadurch auszeichnet, dass ein Aufbiegen des Kontaktfederteiles bei Belastung der Federarme vermieden wird.The invention has created a double flat spring with increased dimensional stability, which is characterized in particular in that bending of the contact spring part is avoided when the spring arms are loaded.

Anhand der Zeichnung wird die Erfindung näher erläutert.The invention is explained in more detail with reference to the drawing.

Es zeigen:Show it:

  • Fig. 1 die Platine einer Ausführungsform der gewinkelten Doppelflachfeder,1 shows the circuit board of an embodiment of the angled double flat spring,
  • Fig. 2 eine Draufsicht auf die gewinkelte Doppelflachfeder nach Fig. 1,2 is a plan view of the angled double flat spring according to FIG. 1,
  • Fig. 3 einen Schnitt längs J-M in Fig. 2,3 shows a section along J-M in FIG. 2,
  • Fig. 4 einen Schnitt längs G-H in Fig. 2,4 shows a section along G-H in FIG. 2,
  • Fig. 5 die Platine einer anderen Ausführungsform der gewinkelten Doppelflachfeder,5 shows the circuit board of another embodiment of the angled double flat spring,
  • Fig. 6 eine Draufsicht auf die gewinkelte Doppelflachfeder nach Fig. 5,6 is a plan view of the angled double flat spring according to FIG. 5,
  • Fig. 7 einen Schnitt längs J-M in Fig. 6,7 shows a section along J-M in FIG. 6,
  • Fig. 8 einen Schnitt längs G-H in Fig. 6.8 shows a section along G-H in FIG. 6.

Die erfindungsgemässe Doppelflachfeder weist den Krallenteil 1 und den Kontaktfederteil 2 auf, die über einen Basisteil 3 miteinander in Verbindung stehen. Das Krallenteil 1 ist in an sich bekannter Weise aufgebaut und besteht im wesentlichen vorzugsweise aus einer Leiterkralle 4 und einer Isolationskralle 5.The double flat spring according to the invention has the claw part 1 and the contact spring part 2, which are connected to one another via a base part 3. The claw part 1 is constructed in a manner known per se and essentially preferably consists of a conductor claw 4 and an insulation claw 5.

Der Kontaktfederteil 2 weist zwei an sich bekannte, sich gegenüberliegend angeordnete Federarmpaare 6, auf, die jeweils an einer Federarmbasis 8 bzw. 9 angebunden sind, wobei die beiden Federarmbasen 8, 9 über einen aussenseitigen Steg 10 miteinander in Verbindung stehen. Der Steg 10 ist in der Platine parallel zur Längsachse des Krallenteils 1 verlaufend angeordnet und stellt in bezug auf diesen im geformten Zustand der Doppelflachfeder eine Rückbiegung der Federarmbasis 8 zur Federarmbasis 9 dar, dergestalt, dass das Federarmpaar 6 über dem Federarmpaar 7 angeordnet ist und sich dadurch die zum Krallenteil 1 rechtwinklig zu einer Seite abgewinkelte Form des Kontaktfederteils 2 ergibt.The contact spring part 2 has two known, oppositely arranged spring arm pairs 6, which are each connected to a spring arm base 8 or 9, the two spring arm bases 8, 9 being connected to one another via an outside web 10. The web 10 is arranged in the board parallel to the longitudinal axis of the claw part 1 and, in relation to the latter in the shaped state of the double flat spring, represents a return bend of the spring arm base 8 to the spring arm base 9 in such a way that the spring arm pair 6 is arranged above the spring arm pair 7 and itself this results in the shape of the contact spring part 2 at right angles to the claw part 1 to one side.

Nach einer besonderen Ausführungsform der Erfindung bildet das Basisteil 3 ein Widerlager für das Federarmpaar 6 bzw. die Federarmbasis 8. Zu diesem Zweck ist das Basisteil 3 käfigartig ausgeführt und besteht im Falle der Ausführungsform gemäss Fig. 1 und 4 aus dem mit der Federarmbasis 9 über den Anbindungssteg 11 verbundenen Boden 12 und den nach vorn schräg hochgezogenen Seitenwänden 13. Die Seitenwände 13 gehen im vorderen Bereich in die eingerollten Widerlagernasen 14 über, die einen an die Federarmbasis 8 angebundenen Abstützsteg 15 übergreifen und dadurch das Aufbiegen des Kontaktfederteils 2 bei Belastung der Federarme abstützen. Insofern wird der Käfig durch den Boden 12, die Seitenwände 13, die Nasen 14 und den Steg 15 gebildet. Zweckmässig ist, wenn der Abstützsteg 15 eine Auflagekante 16 aufweist, die gegen die Vorderkante einer Seitenwand 13 stösst.According to a special embodiment of the invention, the base part 3 forms an abutment for the spring arm pair 6 or the spring arm base 8. For this purpose, the base part 3 is designed like a cage and, in the embodiment according to FIGS. 1 and 4, consists of the one with the spring arm base 9 the connecting web 11 connected floor 12 and the sideways raised obliquely raised side walls 13. The side walls 13 merge in the front into the rolled abutment lugs 14 which overlap a support web 15 connected to the spring arm base 8 and thereby the bending of the contact spring part 2 when the spring arms are loaded support. In this respect, the cage is formed by the bottom 12, the side walls 13, the lugs 14 and the web 15. It is expedient if the support web 15 has a support edge 16 which abuts the front edge of a side wall 13.

Die Ausführungsform gemäss Fig. 5 bis 8 zeigt eine gewinkelte Doppelflachfeder mit Rastarm. Der Käfig des Basisteils 3 ist ausserdem etwas anders ausgeführt als im Falle der Fig. 1 bis 4. An den Abstützsteg 15 schliesst sich der Rastarm 17 an, der nach oben abgewinkelt ist. Zur Abstützung dient in diesem Fall lediglich eine eingerollte, in bezug auf das Federarmpaar 7 eingeschnittene Widerlagernase 14a. Sie ist das Widerlager sowohl für die Doppelflachfeder als auch für den Rastarm 17. Vorteilhaft ist in diesem Fall, dass der Abstützsteg 15 gegenüber dem Federarmpaar 6 teilweise eingeschnitten ist, was die Formgebung erleichtert. Ferner weist die Seitenwand 13a einen in ihrer Verlängerung nach oben gezogenen Führungssteg 18 auf, der mit Führungselementen in einem Gehäuse zusammenwirken kann (nicht dargestellt). Im übrigen gleicht die Ausführungsform nach Fig. 5 bis 8 der gemäss Fig. 1 bis 4, was durch die Wahl der gleichen Ziffern zum Ausdruck kommt.The embodiment according to FIGS. 5 to 8 shows an angled double flat spring with a locking arm. The cage of the base part 3 is also designed somewhat differently than in the case of FIGS. 1 to 4. The locking arm 17 adjoins the support web 15 and is angled upward. In this case, only a rolled-in abutment nose 14a, which is cut with respect to the spring arm pair 7, serves for support. It is the abutment for both the double flat spring and for the locking arm 17. It is advantageous in this case that the support web 15 is partially cut in relation to the spring arm pair 6, which facilitates the shaping. Furthermore, the side wall 13a has a guide web 18 which is pulled upward in its extension and which can cooperate with guide elements in a housing (not shown). Otherwise, the embodiment according to FIGS. 5 to 8 is similar to that according to FIGS. 1 to 4, which is expressed by the choice of the same numbers.

Mit der Erfindung ist es gelungen, eine besonders formbeständige, kastenförmige Doppelflachfeder zu schaffen, bei der der Kontaktfederteil zum Krallenteil seitlich abgewinkelt angeordnet ist.With the invention it has been possible to create a particularly dimensionally stable, box-shaped double flat spring, in which the contact spring part is arranged at an angle to the claw part.

Claims (5)

1. Double leaf spring formed in one piece from a stamped sheet metal part and with a central base part (3), a claw part (1) adjoining thereat at one end in longitudinal direction and a contact spring part (2), adjoining thereat at the other end and with a double spring arm pair (6, 7) bent away at right angles to one side with respect to the claw part (2), wherein the contact spring part (2) displays spring arm pairs (6, 7), which are arranged lying one above and opposite the other and each tied to a respective spring arm base (8 or 9), and the spring arm bases are connected one with the other at the outside by a web (10), characterized thereby, that the base part (3) is shaped in the manner of a cage and forms a counterbearing for a first spring arm base (8), for which it consists of a bottom (12) tied to the other spring arm base (9) and the side walls (13) preferably upstanding obliquely forward, and that the side walls (13) in the front end region pass over into counterbearing lugs (14), which are rolled inwards and laterally engage over a support web (15) tied to the first spring arm base (8).
2. Double leaf spring formed in one piece from a stamped sheet metal part and with a central base part (3), a claw part (1) adjoining thereat at one end in longitudinal direction and a contact spring part (2), adjoining thereat at the other end and with a double spring arm pair (6, 7) bent away at right angles to one side with respect to the claw part (2), wherein the contact spring part (2) displays spring arm pairs (6, 7), which are arranged lying one above and opposite the other and each tied to a respective spring arm base (8 or 9), and the spring arm bases are connected one with the other at the outside by a web (10), characterized thereby, that the base part (3) is shaped in the manner of a cage and forms a counterbearing for a first spring arm base (8), for which it consists of a bottom (12) tied to the other spring arm base (9) and the side walls (13, 13a) preferably upstanding obliquely forward, that the side wall (13) in the front end region passes over into a counterbearing lug (14a), which is rolled inwards, preferably recessed with respect to the spring arm pair (7) and laterally engages over a support web (15) tied to the first spring arm base (8), and that a detent arm (17), which is preferably bent away upwards, adjoins the support web (15).
3. Double leaf spring according to claim 1, characterized thereby, that the support web (15) displays a support edge (16), which abuts against the front edge of a side wall (13).
4. Double leaf spring according to claim 2, characterized thereby, that the support web (15) is partially recessed opposite the one spring arm pair (6).
5. Double leaf spring according to claim 2 or 4, characterized thereby, that the side wall (13a) in upward prolongation displays a guide web (18).
EP79104377A 1979-01-05 1979-11-08 Double-flat contact spring Expired EP0013308B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19792900303 DE2900303A1 (en) 1979-01-05 1979-01-05 DOUBLE FLAT SPRING
DE2900303 1979-01-05

Publications (2)

Publication Number Publication Date
EP0013308A1 EP0013308A1 (en) 1980-07-23
EP0013308B1 true EP0013308B1 (en) 1983-11-23

Family

ID=6060092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104377A Expired EP0013308B1 (en) 1979-01-05 1979-11-08 Double-flat contact spring

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EP (1) EP0013308B1 (en)
DE (1) DE2900303A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1211175A (en) * 1983-04-18 1986-09-09 Charles E. Reynolds Wire-slot type electrical terminal intended for mating with a terminal tab
US4527857A (en) * 1983-04-18 1985-07-09 Amp Incorporated Terminal for connecting a wire to a blade type terminal
ES1020458Y (en) * 1992-01-28 1993-03-01 Mecanismos Auxiliares Industriales, S.A. - M.A.I.S.A. CLIP FOR PERFECTED MODULAR CONNECTION.
FR2693041B1 (en) * 1992-06-26 1996-04-05 Proner Comatel Sa ELECTRICAL CONNECTION DEVICE BY CLIP AND TONGUE.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947083A (en) * 1974-01-26 1976-03-30 Amp Incorporated Edge contact

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247083A (en) * 1964-04-01 1966-04-19 Louis W Raymond Method of chromium electrodeposition
DE7011611U (en) * 1970-03-28 1971-01-21 Holzer & Co Kg W FORK-SHAPED CONTACT SPRING.
CA1029828A (en) * 1974-02-14 1978-04-18 Amp Incorporated Electrical pin receptacles
DE2418019C3 (en) * 1974-04-10 1980-05-14 Bosch-Siemens Hausgeraete Gmbh, 7000 Stuttgart Plug connection equipped with spring tongues
US4060890A (en) * 1975-05-12 1977-12-06 Amp Incorporated Method of manufacturing an electrical harness
DE2728423A1 (en) * 1977-06-24 1979-01-04 Grote & Hartmann SPRING LUG

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3947083A (en) * 1974-01-26 1976-03-30 Amp Incorporated Edge contact

Also Published As

Publication number Publication date
EP0013308A1 (en) 1980-07-23
DE2900303C2 (en) 1989-06-15
DE2900303A1 (en) 1980-07-17

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