EP0234367B1 - Contact élastique pour bloc de connexion électrique - Google Patents

Contact élastique pour bloc de connexion électrique Download PDF

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Publication number
EP0234367B1
EP0234367B1 EP87101661A EP87101661A EP0234367B1 EP 0234367 B1 EP0234367 B1 EP 0234367B1 EP 87101661 A EP87101661 A EP 87101661A EP 87101661 A EP87101661 A EP 87101661A EP 0234367 B1 EP0234367 B1 EP 0234367B1
Authority
EP
European Patent Office
Prior art keywords
contact spring
spring according
contact
circuit board
limbs
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87101661A
Other languages
German (de)
English (en)
Other versions
EP0234367A2 (fr
EP0234367A3 (en
Inventor
Peter Seidel
Leo Ing. Pelz (Grad.)
Karl. Dipl.-Ing Zell (Fh)
Günter Dipl.-Ing Thom (FH)
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.)
Siemens AG
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
Priority to AT87101661T priority Critical patent/ATE91047T1/de
Publication of EP0234367A2 publication Critical patent/EP0234367A2/fr
Publication of EP0234367A3 publication Critical patent/EP0234367A3/de
Application granted granted Critical
Publication of EP0234367B1 publication Critical patent/EP0234367B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/50—Fixed connections
    • H01R12/51—Fixed connections for rigid printed circuits or like structures
    • H01R12/55—Fixed connections for rigid printed circuits or like structures characterised by the terminals
    • H01R12/58—Fixed connections for rigid printed circuits or like structures characterised by the terminals terminals for insertion into holes
    • H01R12/585—Terminals having a press fit or a compliant portion and a shank passing through a hole in the printed circuit board

Definitions

  • the invention relates to a contact spring according to the preamble of claim 1.
  • Contact springs for electrical connector strips are provided to make electrical contact with a printed circuit board connected to the connector strip.
  • Currents flowing through such contact springs are usually directed to only one connection point of the circuit board.
  • partial currents must be conducted to different connection points of the printed circuit board in certain applications. Although this can be done by appropriately shaping the conductor tracks on the printed circuit board, it is associated with the disadvantage of space consumption on the printed circuit board.
  • mechanical damage to the contact lugs of the contact spring making contact with the printed circuit board can significantly increase the electrical resistance of the current path and trigger further damage to the connection lug and malfunctions, even the failure of connected electrical circuit parts.
  • the two contact springs which are at right angles to one another for polarity reasons and are produced from a sheet metal strip in a stamping process, have connecting parts and contact spring parts connected to one another via longitudinal and transverse webs.
  • the contact spring parts, to which the measuring and testing devices are connected are arranged in an electrically insulated manner in a double-chamber connector strip (housing).
  • the connecting parts are electrically non-insulated and are used for the electrical connection of the circuit board to the measuring and testing devices is soldered into corresponding receiving openings in the circuit board.
  • a current distribution arrangement is known from EP-A3-00 54 377, with which high electrical powers are delivered, for example, to printed circuit boards.
  • the current distribution arrangement contains an insulating housing with a U-shaped metallic current distribution frame, for example made of copper, which is detachably arranged therein.
  • the power distribution frame has a multiplicity of connecting lugs which dip into corresponding openings in the housing and can additionally be pressed into receiving openings in the printed circuit board when the power distribution arrangement is attached to a printed circuit board.
  • a hole is provided on the power distribution frame through which a power supply cable can be attached.
  • the contact spring for electrical connector strips, with which a circuit board high electrical powers are supplied.
  • the contact spring has, in addition to a contact spring part, a connecting part with at least two connecting lugs, which are soldered into a corresponding receiving opening in the printed circuit board.
  • the contact spring part in turn serves as a receptacle for a contact pin supplying the electrical power, in which two spring legs laterally grip the contact pin for the necessary electrical connection.
  • the invention is based, to build contact springs for electrical connector strips, the task of the electrical resistance and are therefore suitable for higher currents.
  • a contact spring part facing a contact pin to be inserted is shaped such that its electrical resistance corresponds to the electrical resistance of the connecting part.
  • the contact spring shown in Figure 1 for an electrical connector strip has three symmetrical connection lugs 1 arranged to the insertion axis of a contact pin to be inserted.
  • the connection lugs 1 in their entirety form the connection part serving for the electrical connection to a printed circuit board connected to the connector strip.
  • Connector strip and circuit board are not shown in the figures.
  • the connecting part of the contact spring according to the invention can have at least two connecting lugs 1 which can be pressed or soldered into a corresponding receiving opening in the printed circuit board and which serve for current distribution.
  • the contact spring is preferably formed as a one-piece body, on the side facing away from the insertion opening, the connection lugs 1 are arranged. They are described as detailed below, when using the press-in technique they are bent into a 2-V shape in their press-in area in order to enable the press-fitting into a corresponding circuit board receptacle opening with only a small press-in force and to thereby ensure reliable contacting.
  • the two side legs 3 and 4 forming the V-shaped region run obliquely towards one another towards the free end of each connecting lugs 1.
  • the contact spring can be shaped in different ways on its part facing a contact pin to be inserted.
  • This part of the contact spring can consist of two spring legs 5 arranged symmetrically to the insertion axis, the shape of which is shown in FIGS. 1, 2 and 3.
  • the spring legs 5 have on their underside centering lugs 6 which, in the installed state, bear against a centering web with pre-tensioning, as a result of which the spring is pre-opened to reduce the insertion force and is protected against insertion.
  • the contact spring has a resilient web 7 in the region of the insertion opening, which web is inserted into a correspondingly shaped slot in order to mount the contact spring in the connector strip.
  • At least one dome-shaped latching element 8 presses against the contact spring receiving opening in the connector strip.
  • the contact spring is shaped on its part facing a contact pin to be inserted such that its electrical resistance corresponds to the electrical resistance of the connecting part.
  • the contact spring consists only of a material such as copper, or if it consists at least in its current-carrying area of the same material or of different materials of the same electrical conductivity, the electrical resistance of the contact spring part facing a contact pin to be inserted and the connection part only depend on the formation of the two parts.
  • the electrical resistance depends on the shape of the surface of the current-carrying contact spring parts.
  • connection lugs 1 serve to distribute the current supplied by the contact pin and the part of the contact spring facing it. A partial flow of the total flow flows through each connecting lug 1. The partial currents are led via the connection lug 1 into corresponding metallized receiving openings on the printed circuit board, from where the partial currents can be supplied to the intended current-consuming circuit parts on separate conductor tracks. However, individual conductor tracks can also be merged immediately in order to link several partial streams.
  • the press-in area 2 of the connecting lug 1 which can be V-shaped, for example, is formed by two side legs 3 and 4. Towards the free end of the connecting lug 1, the press-in region 2 is delimited by the side legs 3 and 4 which run obliquely towards one another.
  • the V-shaped fitting area is limited by collar-shaped widenings.
  • the collar-shaped widenings are used to attach a press-in tool.
  • the outer edges of the two side legs 3 and 4 of the connecting lug 1 are rounded.
  • the side legs 3 and 4 tapering towards one another towards the free end of the connecting lug 1 form a substantially rounded tip which, when the connecting lug 1 is inserted into the circuit board receiving opening, strikes the opening in the center. This ensures that the terminal lugs 1 can precisely and gently slide into the corresponding openings, thereby avoiding unnecessary chip removal from the metallized reveal of the receiving opening arranged in the printed circuit board.
  • FIG. 2 shows a top view of the contact spring with a total of six connecting lugs 1, each having side legs 3 and 4, with spring legs 5, a fastening element 7 designed as a resilient web and two latching elements 8, which have a circular base in the form of a dome.
  • the spring legs 5 shown in FIG. 2 run conically towards the insertion opening and have, at their insertion opening directly facing part, approximately semi-circular, outwardly open deformations which ensure reliable contacting of a contact pin to be inserted with the contact spring.
  • the non-numbered circular opening in the middle of the contact spring surface can serve to serve as a connection to the connector strip Fastening element, such as a screw.
  • FIG. 3 shows a view of the side of the contact spring facing a contact pin to be inserted, with connecting lugs 1, which have a press-in area 2, with spring legs 5, centering lugs 6, the resilient web 7 and with two locking elements 8 arranged symmetrically to the insertion axis 8.
  • the contact spring can be on it the insertion opening opposite side to be open to receive contact pins of different lengths.
  • the contact pins can be made longer than the corresponding contact spring.

Landscapes

  • Coupling Device And Connection With Printed Circuit (AREA)
  • Connecting Device With Holders (AREA)
  • Multi-Conductor Connections (AREA)

Claims (13)

  1. Ressort de contact pour une barrette de connexion électrique comportant une partie de raccordement qui est utilisée pour établir le raccordement électrique avec une plaquette à circuits imprimés raccordée à la barrette de connexion, et qui comprend au moins deux languettes de raccordement (1) qui peuvent être emmanchées à force ou soudées dans des ouvertures de logement correspondantes respectives de la plaquette à circuits imprimés et servent à répartir le courant, caractérisé par le fait qu'une partie (5, 6) du ressort de contact, qui est tournée vers une tige de contact devant être introduite, est conformée de telle sorte que sa résistance électrique correspond à la résistance électrique de la partie de raccordement.
  2. Ressort de contact suivant la revendication 1, caractérisé par le fait que la partie (5, 6) du ressort de contact comporte deux branches de ressort (5) symétriques par rapport à la direction d'enfichage.
  3. Ressort de contact suivant l'une des revendications précédentes, caractérisé par le fait que les languettes de raccordement (1) possèdent, dans la zone de montage à force (2), des branches latérales (3, 4) repliées en forme de V, qui se rapprochent obliquement l'une de l'autre en direction de l'extrémité libre des languettes de raccordement (1).
  4. Ressort de contact suivant l'une des revendications précédentes, caractérisé par le fait que la zone d'insertion à force (2) des languettes de raccordement (1) est limitée, en direction de l'extrémité non libre, par deux élargissements opposés en forme de collets.
  5. Ressort de contact suivant l'une des revendications précédentes, caractérisé par le fait que les branches latérales (3, 4), qui se rapprochent obliquement l'une de l'autre en direction de l'extrémité libre des languettes de raccordement (1), forment une pointe sensiblement arrondie, qui s'étend au centre du perçage, lors de l'insertion des languettes de raccordement (1) dans la plaquette à circuits imprimés.
  6. Ressort de contact suivant l'une des revendications précédentes, caractérisé par le fait que les deux branches latérales (3, 4), qui forment la zone en forme de V, font un angle de 60°.
  7. Ressort de contact suivant l'une des revendications précédentes, caractérisé par le fait que les bords extérieurs des deux branches latérales (3, 4) sont arrondis.
  8. Ressort de contact suivant l'une des revendications 2 à 7, caractérisé par le fait que chaque branche (5) du ressort possède un ergot de centrage (6).
  9. Ressort de contact suivant l'une des revendications 2 à 8, caractérisé par le fait que sur sa partie tournée vers une tige de contact devant être insérée, il comporte, en plus ces branches (5), un élément de fixation (7).
  10. Ressort de contact suivant la revendication 9, caractérisé par le fait que l'élément de fixation (7) est réalisé sous la forme d'une barrette élastique.
  11. Ressort de contact suivant la revendication 9 ou 10, caractérisé par le fait que l'élément de fixation (7) possède au moins un élément d'encliquetage (8).
  12. Ressort de contact suivant la revendication 11, caractérisé par le fait que chaque élément d'encliquetage (8) est réalisé en forme de coupelle.
  13. Ressort de contact suivant l'une des revendications précédentes, caractérisé par le fait que le ressort de contact est ouvert sur sa face tournée à l'opposé de l'ouverture d'enfichage.
EP87101661A 1986-02-26 1987-02-06 Contact élastique pour bloc de connexion électrique Expired - Lifetime EP0234367B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87101661T ATE91047T1 (de) 1986-02-26 1987-02-06 Kontaktfeder fuer eine elektrische steckverbindungsleiste.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3606198 1986-02-26
DE3606198 1986-02-26

Publications (3)

Publication Number Publication Date
EP0234367A2 EP0234367A2 (fr) 1987-09-02
EP0234367A3 EP0234367A3 (en) 1988-08-10
EP0234367B1 true EP0234367B1 (fr) 1993-06-23

Family

ID=6294984

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101661A Expired - Lifetime EP0234367B1 (fr) 1986-02-26 1987-02-06 Contact élastique pour bloc de connexion électrique

Country Status (3)

Country Link
EP (1) EP0234367B1 (fr)
AT (1) ATE91047T1 (fr)
DE (1) DE3786272D1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4973257A (en) * 1990-02-13 1990-11-27 The Chamberlain Group, Inc. Battery terminal
NO982678L (no) * 1997-06-26 1998-12-28 Siemens Ag Pluggkoblingsstykke

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359258A (en) * 1980-01-14 1982-11-16 Trw Inc. Electrical connector
JPS57123669A (en) * 1980-12-15 1982-08-02 Amp Inc Power distribution block
DE3441134A1 (de) * 1984-11-10 1986-05-15 Cannon Electric Gmbh Pruefstecker mit buchsenkontakten und verfahren zur herstellung solcher buchsenkontakte

Also Published As

Publication number Publication date
EP0234367A2 (fr) 1987-09-02
ATE91047T1 (de) 1993-07-15
DE3786272D1 (de) 1993-07-29
EP0234367A3 (en) 1988-08-10

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