EP0742607A2 - Ressort de contact - Google Patents

Ressort de contact Download PDF

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Publication number
EP0742607A2
EP0742607A2 EP96106982A EP96106982A EP0742607A2 EP 0742607 A2 EP0742607 A2 EP 0742607A2 EP 96106982 A EP96106982 A EP 96106982A EP 96106982 A EP96106982 A EP 96106982A EP 0742607 A2 EP0742607 A2 EP 0742607A2
Authority
EP
European Patent Office
Prior art keywords
spring
base
over
side walls
contact
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Withdrawn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
EP96106982A
Other languages
German (de)
English (en)
Other versions
EP0742607A3 (fr
Inventor
Martin Dipl.-Ing. Sträb (FH)
Hans-Jost Heimüller
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.)
TE Connectivity Solutions GmbH
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0742607A2 publication Critical patent/EP0742607A2/fr
Publication of EP0742607A3 publication Critical patent/EP0742607A3/fr
Withdrawn legal-status Critical Current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
    • H01R13/15—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 contact spring with a base spring which has a spring arm base, of which a connecting part extends in one piece at one end and spring arms extend away from two parallel side walls of the spring arm base at the other end, and with an over-spring held on the spring arm base, one of which is the side walls has the base wall spanning the spring arm base, to the edge of which side walls, which are arranged parallel to the side walls of the spring arms, connect and embrace the side walls at the ends, and with a clamping device in order to secure the over-spring and the base spring against slipping.
  • Such contact springs are described for example in DE-GM 92 02 365.7 and are preferably used on a large scale as connectors in automotive engineering.
  • the over-spring essentially has the function of increasing the spring force of the contact spring and, by designing one or more latching tongues, enabling the contact spring to be releasably locked in a contact chamber of a housing made of insulating material.
  • the spring is usually made of a material with good spring properties, while the base spring is made of a material with good electrical thermal properties.
  • the spring can be made, for example, as a stamped and bent part from sheet metal.
  • the base spring is preferably also a stamped and bent part, but because of the necessary good electrical properties it preferably consists of a copper alloy, such as galvanized brass.
  • the spring must avoid a relative displacement between spring and base spring or exclude their detachment under the action of a plug or tensile force.
  • the over-spring placed over the base spring is fixed by bending over special holding arms or tabs which are formed on the over-spring.
  • a bead pressed into the over-spring which engages behind an element of the base spring, prevents the over-spring from sliding off the base spring when the insertion force or a tensile force acts on the line.
  • a secondary fuse for the contact spring contact into which the plug contacts are inserted is also required.
  • the contact springs After the contact springs have been inserted into the corresponding housing (made of insulating material (plug strips, relay socket, etc.)), locking elements engage in corresponding openings in these housings and lock there.
  • the secondary fuse is currently implemented in that, after the housing has been fitted and the contact spring contacts have been primarily locked, plastic elements are brought into a position in which they engage behind the contour of the contacts. This is usually only possible on one side of these contacts due to the asymmetrical geometry of the contact spring.
  • both asymmetrically and symmetrically designed contact arrangements for contact spring contacts are currently known.
  • the symmetrical contact arrangements usually only offer attack options for secondary securing on two of their outer sides.
  • the associated contact spring contact of such symmetrical contact arrangements can either only be plugged in a certain orientation or there is the possibility of inserting it rotated by 180.
  • the invention has for its object to provide a secure fixation of the base spring and over-spring in a contact spring of the type mentioned, the necessary material expenditure for this is to be reduced compared to the known contact springs.
  • all-round secondary security should be possible.
  • This task of securely fixing the spring and base spring is achieved in a contact spring of the type mentioned in that the base spring in the area of the spring arm base and the spring are each provided on the ceiling with at least one shaped tab connected to one of the side walls or one of the side walls, and that one of these two form flaps is held snapping or underlapping on the other form flap and thus forms the clamping device.
  • the snap-in mounting of the one form flap on the other form flap ensures that the over-spring and base spring are held securely even if the over-spring tilts sideways compared to the base spring due to external influences.
  • the shaped tab of the spring is preferably designed to be self-locking.
  • the base spring is expediently inserted into the pre-bent over-spring. Then the side walls of the over-spring are bent to the desired size and the molding tab (s) on it are pressed inwards.
  • both the base spring and the over-spring each have two shaped tabs on the ceiling opposite one another, with one overlapping tab of the over-spring being held snapping to an opposite shaped tab of the base spring.
  • Each shaped tab of the base spring extends orthogonally from the edge of a side wall running parallel to the longitudinal axis X of the contact spring on the ceiling side.
  • the one or more form tabs of the over-spring is or are also arranged on the upper side of the over-spring and can be easily pushed into the box-shaped interior of the over-spring during assembly.
  • each shaped tab of the base spring is provided with a guide device on its side provided for the snap connection with the associated shaped tab of the over-spring.
  • a guide device can, for example, be an embossing which is attached to the shaped tabs of the over-spring.
  • the flap of the over-spring can have, for example, a flap part aligned like a top wall to the side wall, which provides a flap plate at the end, the plate plane of which is arranged essentially orthogonally to the longitudinal axis of the contact spring.
  • the above-mentioned embossing is arranged, so that when the pressure is applied, the associated flap of the over-spring is pressed under the flap of the base spring when the corresponding flaps are snapped.
  • the spring arm base of the base spring is designed to be bottom-free, the over-spring having at least one tab which is clamped between the side walls of the spring arm base of the base spring. In this way, a connection of the over-spring and base spring that is free of lateral slippage with respect to the longitudinal axis of the contact spring is achieved.
  • the last-mentioned tab of the over-spring can, for example, be at least approximately semicircular, have an outer diameter which corresponds approximately to the distance between the side walls of the spring arm base of the base spring and from the bottom wall of the over-spring at least approximately at a right angle inwards between the side walls of the spring arm base of the base spring is bent.
  • two such spaced-apart tabs are arranged in the bottom wall of the over-spring and bent inward between the side walls of the spring arm base of the base spring.
  • this flap which is bent into the interior of the contact spring, also makes it mechanically stable Structure of the contact spring is achieved because the side walls can be supported on this inwardly bent tab.
  • Another development of the invention provides that the side walls of the over-spring in the assembled state of the contact spring rest flat against the side walls of the spring arm base of the base spring. This measure further increases the stability of the entire contact spring.
  • the over-spring is box-shaped at least at its end facing the connecting part and extends with this end beyond the spring arm base of the base spring.
  • a suitable plastic element can thus be brought into a position on all sides, which engages behind the contour of the box-shaped end of the spring. Since the web, which connects the connecting part to the spring arm base of the contact spring, extends approximately centrally from the box-shaped end of the spring, the four-sided possibility of attack for the secondary securing on the spring is readily possible.
  • a base spring for a contact spring is shown by way of example in a side view and in a top view of the ceiling side of the base spring 1.
  • the base spring 1 consists of a material with good electrical and thermal properties, for example spring bronze, and essentially has a connecting part 3 with an insulation claw 5 and an integral conductor claw 4.
  • the spring arm base 2 consists essentially of two spaced-apart side walls 8, 9, which run parallel to the longitudinal axis X of the contact spring, and on the ceiling-side edges of which mold tabs 10, 11 to be explained in detail are each integrally connected.
  • the spring arm base 2 in contrast to the previously known base springs, has no bottom wall.
  • the side walls 8, 9 of the spring arm base 2 of the base spring 1 are therefore not integrally connected to one another in the region of the spring arm base.
  • Two spring arms 6, 7 are connected to the spring arm base 2 opposite to the web 20 and end in an introduction funnel 14 in a manner known per se.
  • the entire base spring 1 extends along its longitudinal axis X.
  • connection part 3 has a conductor wire claw 4 and an insulation claw 5 and thus forms a crimp connection
  • any other configuration of the connection part 3 would also be possible.
  • the connecting part 3 could, for example, also be designed as a so-called IDC connection, as an insulation displacement connection, as a double insulation displacement connection, etc. All that is essential is the one-piece connection of the connecting part 3 via the web 20 to the spring arm base 2 of the base spring 1.
  • the spring arm base 2 is provided on the ceiling side with shaped tabs 10, 11.
  • a flap 10, 11 is integrally formed on the edges of each of the two side walls 8, 9 facing the ceiling side 15 of the base spring 1.
  • the form tab 10 is integrally formed on the side wall 8 and the form tab 11 on the side wall 9. Both form tabs 10, 11 have approximately with respect to the longitudinal axis X of the contact spring a fifth of the length of the spring arm base 2.
  • the form tab 11 is formed on the side wall 9 in the front part of the spring arm base 2 and thus on the end of the spring arm base 2 facing the spring arms 6, 7, while the form tab 10 is formed on the side wall 8 close to the opposite end of the spring arm base 2.
  • Both form tabs 10, 11 extend to the opposite side wall 9, 8 in such a way that their surfaces are each orthogonal to the side walls 8, 9 and lie in one plane with each other.
  • the form flap 10 is approximately L-shaped and protrudes close to the side wall 9.
  • the form flap 10 extends from the side wall 8 initially with its long leg in the direction of the side wall 9 in order to protrude at right angles to this side wall 9 in the direction of spring arms 6, 7 and to end with a nose 10a.
  • This slope is marked with the reference symbol 10c in FIG. 3.
  • the opposite boundary of the shaped tab 10 is marked with the reference symbol 10b and runs in a straight line. This boundary 10b is also orthogonal to the side wall 8.
  • the contour of the shaped tab 10 on the side facing the spring arms 6, 7 is essential for the clamping device to be explained, with which the over-spring 30 presented in the following FIGS. 5 to 8 can be attached to the spring arm base 2.
  • the shaped tab 11 connected to the side wall 9 is designed similarly to the shaped tab 10.
  • the nose 11a is the connection part 3 of the contact spring facing, as well as the embossing 13.
  • FIG. 4 shows the corresponding sectional view of the section line C-C shown in FIG. 2 in the area of the spring arm base 2.
  • the spring arm base 2 is designed to be bottom-free, i. that is, no bottom wall is provided between the two side walls 8, 9. 4 shows, in addition to the two spring arms 6, 7 running towards one another, the molded tab 11 connected to the side wall 9, which is orthogonal to both side walls 8, 9 and ends shortly before the side wall 8.
  • An over-spring 30 is shown as an example in the following FIGS. 5 to 8. This excess spring 30 can be placed jamming on the base spring 1 shown in FIGS. 1 to 4.
  • the spring 30 is also referred to as a locking sleeve. As can be seen from the illustrations in FIGS. 5 to 8, the spring 30 is approximately box-shaped around the longitudinal axis X.
  • the spring 30 consists of a material with good spring properties, for. B. a stamped and bent part made of sheet metal.
  • the box-shaped spring 30 has a bottom wall 33, on the two edges of which run parallel to the longitudinal axis X, side walls 31, 32 extend parallel to one another in the same direction.
  • a latching tongue 33, 34 is incorporated into each of these side walls 31, 32.
  • a clamp arm 40, 41 extends from these side walls 31, 32 in the same direction. 5, these clamp arms 40, 41 extend from the edge of the side walls 31, 32 shown on the left to converge.
  • These clamp arms 40, 41 are provided in order to press with their respective ends onto the spring arms of the basic spring and thus to ensure an increased clamping force of the spring arms of the basic spring.
  • Shaped flaps 36, 37 are integrally formed on the two side walls 31, 32 of the over-spring 30, which cooperate with the shaped flaps 10, 11 of the base spring 1 explained in connection with FIGS. 1 to 4 in order to hold the over-spring 30 jamming on the To ensure spring arm base 2 of the base spring 1.
  • the flaps 36, 37 are, as clearly shown in FIGS. 5 and 7, designed as follows. On the edges of the side walls 31, 32 opposite the bottom wall 33, narrow, ceiling parts 44, 45 running in one piece and parallel to the longitudinal axis X are formed. These ceiling parts 44, 45 are perpendicular to the respectively connected side wall 31, 32. The ceiling parts 44, 45 lie on a common plane, as shown in FIG. 7, and are oriented towards one another.
  • the form tab 37 is integrally formed approximately in the middle of the ceiling part 45. This form flap 37 initially extends in the direction of the opposite side wall 31, in order then to bend at right angles to about half the width of the over-spring 30 and to continue in the opposite direction to the clamp arms 40, 41.
  • this flap 37 closes with a flap plate 39 which is oriented orthogonally to the longitudinal axis X.
  • the form flap 37 with its form flap plate 39 is just arranged on the spring 30 that in the assembled state of the contact spring, d. that is, the over-spring 30 is slipped onto the spring arm base 2 of the base spring 1, can come into engagement with the mold tab 10 in a jamming manner. This will be explained in connection with FIGS. 9 to 11.
  • the form flap 36 is designed in a similar manner to the form flap 37, but is integrally connected to the side wall 31. There is also a narrow one on the edge of the side wall 31 opposite the bottom wall 33 Ceiling part 44 formed in one piece. This cover part 44 is integrally connected to the form flap 36, which first extends away from the cover part 44 in the direction of the opposite side wall 32, in order to bend at right angles to half the width of the over-spring 30 in the direction of the clamp arms 40, 41.
  • the form tab 36 ends again with a form tab plate 38 which is orthogonal to the longitudinal axis X.
  • the entire form flap 36 is connected to the side wall 31 or to the ceiling part 44 in such a way that the form flap plate 38 can come into clamping engagement with the form flap 11 of the base spring 1 shown in FIGS. 1 to 4.
  • the flap plates 38, 39 are, for example, L-shaped and are provided on their lower side with an embossing 43 as an insertion aid.
  • This embossing 43 is essentially a bevel, which acts as a leader under the form tabs of the base spring 1 when the form tabs 36, 37 snap together or underlap.
  • the flap plates 38, 39 snap or underlap the flaps 11 and 10 of the spring arm base 2 of the base spring 1.
  • the flap plates 38, 39 underlap or snap the flaps 11 and 10 straight on those places where the form tabs 11, 10 are provided with the bevels or embossments 12, 13.
  • the base spring 1 is inserted into the partially pre-bent over-spring 30.
  • the side walls 31, 32 of the over-spring 30 are bent to the desired size and the shaped tabs 36, 37 located thereon are pressed inwards.
  • By snapping the flap plates 38, 39 under which is facilitated by the above-mentioned embossments 12, 13 and 43, respectively, under the flaps 11, 10 of the base spring 1, there is a positive locking of over-spring 30 and base spring 1.
  • the ceiling parts 44, 45 of the spring 30 are provided at their ends facing the connecting part 3 with widened tabs 46, 47, which each project approximately to the middle of the spring 30.
  • the two tabs 46, 47 are separated from one another by a slot 48.
  • the over-spring 30 projects with this end beyond the spring arm base 2 of the base spring 1.
  • the web 20 which is smaller in its dimensions, projects approximately centrally from the box-shaped over-spring 30. Since the web 20, as shown in FIG. 9, is of substantially smaller dimensions than the outer border of the spring 30, a secondary securing device can easily engage on all four sides of the spring 30.
  • the side walls 31, 32 lie flat against the side walls 8, 9 of the base spring 1.
  • the tabs 50 (the tab 51 cannot be seen in FIG. 11) adjoin the side walls 8, 9 at the edge, as a result of which the spring 30 is prevented from slipping sideways.
  • Essential in the sense of the present invention is only a clamping device such that both the base spring in the area the spring arm base and the over-spring are each provided on the ceiling side with at least one shaped tab connected to one of the side walls or one of the side walls and that one of these two shaped tabs is snapped or underlapped on the other shaped tab.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
EP96106982A 1995-05-11 1996-05-03 Ressort de contact Withdrawn EP0742607A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19517353A DE19517353C1 (de) 1995-05-11 1995-05-11 Kontaktfeder
DE19517353 1995-05-11

Publications (2)

Publication Number Publication Date
EP0742607A2 true EP0742607A2 (fr) 1996-11-13
EP0742607A3 EP0742607A3 (fr) 1998-04-15

Family

ID=7761690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106982A Withdrawn EP0742607A3 (fr) 1995-05-11 1996-05-03 Ressort de contact

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US (1) US5683274A (fr)
EP (1) EP0742607A3 (fr)
DE (1) DE19517353C1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19713661C1 (de) * 1997-04-02 1998-09-24 Siemens Nixdorf Inf Syst Kontaktanordnung
DE29719153U1 (de) * 1997-10-28 1999-03-04 Grote & Hartmann Gmbh & Co Kg, 42369 Wuppertal Miniaturisiertes Steckkontaktelement
US6000975A (en) * 1997-12-12 1999-12-14 3M Innovative Properties Company Canted beam electrical contact and receptacle housing therefor
JP3556879B2 (ja) * 2000-03-15 2004-08-25 住友電装株式会社 コネクタ
US7935860B2 (en) * 2007-03-23 2011-05-03 Kimberly-Clark Worldwide, Inc. Absorbent articles comprising high permeability superabsorbent polymer compositions
DE102016125764A1 (de) * 2016-12-28 2018-06-28 Lear Corporation Zweistückige elektrische clean-body-anschlussbuchse

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220310A (en) * 1988-05-31 1990-01-04 Amp Inc Electrical connector
EP0517139A2 (fr) * 1991-06-03 1992-12-09 The Whitaker Corporation Contact électrique
EP0577927A1 (fr) * 1992-07-07 1994-01-12 Grote & Hartmann GmbH & Co. KG Elément de contact électrique

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3248078C2 (de) * 1982-12-24 1986-03-27 Grote & Hartmann Gmbh & Co Kg, 5600 Wuppertal Doppelflachfederkontakt mit Überfeder
EP0517077B1 (fr) * 1991-06-03 1997-07-23 The Whitaker Corporation Contact électrique
DE9202365U1 (de) * 1992-02-24 1993-06-17 Siemens Ag, 8000 Muenchen Kontaktfeder mit Rasthülse

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2220310A (en) * 1988-05-31 1990-01-04 Amp Inc Electrical connector
EP0517139A2 (fr) * 1991-06-03 1992-12-09 The Whitaker Corporation Contact électrique
EP0577927A1 (fr) * 1992-07-07 1994-01-12 Grote & Hartmann GmbH & Co. KG Elément de contact électrique

Also Published As

Publication number Publication date
EP0742607A3 (fr) 1998-04-15
US5683274A (en) 1997-11-04
DE19517353C1 (de) 1996-04-04

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