US3727175A - Fork-shaped contact spring to produce a separable electric connection - Google Patents

Fork-shaped contact spring to produce a separable electric connection Download PDF

Info

Publication number
US3727175A
US3727175A US00125961A US3727175DA US3727175A US 3727175 A US3727175 A US 3727175A US 00125961 A US00125961 A US 00125961A US 3727175D A US3727175D A US 3727175DA US 3727175 A US3727175 A US 3727175A
Authority
US
United States
Prior art keywords
contact
fingers
contact element
flange
contact fingers
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
US00125961A
Other languages
English (en)
Inventor
H Grenda
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.)
Holzer Patent AG
Original Assignee
Holzer Patent 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 Holzer Patent AG filed Critical Holzer Patent AG
Application granted granted Critical
Publication of US3727175A publication Critical patent/US3727175A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H01R12/728—Coupling devices without an insulating housing provided on the edge of the PCB

Definitions

  • ABSTRACT An electrical contact element of the two-fingered spring-like contact type is formed so that the spaced contact fingers are folded along an axis parallel to the fingers and extend normal to the plane of the attaching flange and are also bent about an axis extending between them so that each contact finger forms the arm of a V.
  • a retaining flange is wrapped around the folded contact element to retain the contact fingers in their overlapped relationship.
  • the invention relates to a fork-shaped contact spring to produce separable electric connections, especially for printed circuit boards and, for pressing onto electric conductors, for example, electric cables, with contact fingers made of double the material thickness, by folding an essentially symmetrical element punched from flat, strip-like material.
  • Another object of the invention is to develop the contact spring in such a way that a high contact pressure and several contact supports develop. The finishing process is to be made as simple as possible so that a precise alignment is not necessary for folding up the contact elements.
  • the contact spring according to a further object of the invention and especially in the case of its contact making supports, is to be shaped in such a way that the contact spring will have a stable seat on a printed circuit board so that it cannot twist.
  • the previously mentioned objectives are achieved through the fact that the two essentially symmetrical contact elements, which are independent per se, are connected along their folding line, are punched from moving sheet material and still carried by said sheet material, and can be folded up mutually and can be fixed in this position by way of a flange for other finishing processes.
  • Another development of the invention provides that the longitudinal axis of the attaching flange for the attachment of the cable is angled to the plug-in direction.
  • the object of the application is advantageous in that the fork spring can be produced by relatively simple means. As soon as the two individual contact elements are folded together and are secured by a flange, the entire contact spring lies essentially in one plane. During the following processing steps therefore, no elements already standing up or abutting against the processing arrangements will be damaged as a result of twisting the ribbon shaped starting materials. An unintended breaking of not yet finished contact springs will effectively be avoided thereby.
  • the inventive contact spring as compared to known springs, has the advantage that, in the case of folding, the requirements for precision do not have to be too high, since after the folding has been accomplished, the contact spring can repunched, as a result of which an absolutely certain matching of the contact fingers lying one on top of the other will be achieved.
  • the contact spring By twisting the contact fingers in relation to one another, one will additionally achieve the advantage that the contact spring will be able to be seated completely straight on a printed circuit board.
  • FIG. I shows, in perspective presentation, the individual processing steps leading to the finished contact spring
  • FIG. 2 shows a top view of contact fingers bent around their longitudinal axis and which rests on a flange serves initially for the fixation of the contact spring in a contact housing.
  • the folded contact elements are repunchable in order to achieve an exact measurement.
  • the contact elements are oversize and can be repunched after being folded.
  • the longitudinal axis of the attaching flanges for atprinted circuit board are aligned with the longitudinal axis of the attaching flanges for atprinted circuit board.
  • the forkshaped contact spring is punched out of a band-shaped flat material 1.
  • the punched part resulting therefrom has two contact elements 2, each of which has two contact fingers 6.
  • the first of the two contact elements 2 is provided, moreover, with an attaching flange 5 which, after appropriate shaping, is to serve later on to hold a cable.
  • Contact element 2 connected with the attaching flanges 5 has been connected in addition with the bandshaped starting material via its contact fingers at their ends.
  • the attaching flanges 5 likewise are still in connection with the bandshaped starting material.
  • the second contact element 2 is' connected merely by means of a folding line 3 with the first contact element.
  • process step B follows, which consists in the freely punched contact element 2 being bent onto the other contact element 2 attached to the band-shaped starting material 1.
  • flange 4 then is bent in such a way that it will firmly hold the two contact elements 2 together.
  • flange 4 constitutes in a known manner the stop of the contact spring in a contact housing.
  • the subsequent punching of the individual contact elements 2, which already lie one above the other, is to be considered.
  • This subsequent punching leads to the outside limiting edges of the two contact elements 2 being precisely identical.
  • the subsequent punching is a constituent part of the finishing process of the'fork-shaped contact spring, the two contact elements 2 are given a certain oversize in the case of the first punching step and given the final dimensions only through the subsequent punching.
  • the individual contact fingers 6 can be bent approximately as a V toward each other in such a way that edges 9, resting on the conducting path 8 of a printed circuit board 7, are
  • a contact element connected to said attaching flange and including a pair of spaced contact fingers formed by folding said contact element along an axis parallel to said contact fingers, said pair of contact fingers extend normal to the plane of said attaching flange, said contact fingers are bent about an axis extending between them so that each contact finger forms the arm of a V;

Landscapes

  • Manufacturing Of Electrical Connectors (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
US00125961A 1970-03-20 1971-03-19 Fork-shaped contact spring to produce a separable electric connection Expired - Lifetime US3727175A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH422970A CH515629A (de) 1970-03-20 1970-03-20 Verfahren zur Herstellung eines gabelförmigen Kontaktelementes

Publications (1)

Publication Number Publication Date
US3727175A true US3727175A (en) 1973-04-10

Family

ID=4272212

Family Applications (1)

Application Number Title Priority Date Filing Date
US00125961A Expired - Lifetime US3727175A (en) 1970-03-20 1971-03-19 Fork-shaped contact spring to produce a separable electric connection

Country Status (4)

Country Link
US (1) US3727175A (en, 2012)
CH (1) CH515629A (en, 2012)
FR (1) FR2084892A5 (en, 2012)
GB (1) GB1303604A (en, 2012)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252864A (en) * 1979-11-05 1981-02-24 Amp Incorporated Lead frame having integral terminal tabs
US4315663A (en) * 1980-03-10 1982-02-16 Amp, Inc. Multiple position brush connector
US5226840A (en) * 1991-05-28 1993-07-13 Eaton Corporation Electrical connector terminal and contact
WO1996002960A1 (en) * 1994-07-15 1996-02-01 Berg Technology, Inc. Zif for plastic chip carrier
US5921784A (en) * 1997-05-08 1999-07-13 Framatome Connectors Usa Inc. High speed card edge connector with tubular shared ground contact
US20120127670A1 (en) * 2007-10-30 2012-05-24 Ronny Ludwig Module housing and method for manufacturing a module housing
US20160064834A1 (en) * 2013-05-13 2016-03-03 Yazaki Corporation Female terminal fitting

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1085584B (de) * 1957-09-24 1960-07-21 Standard Elektrik Lorenz Ag Steckkontaktfeder
US3104925A (en) * 1962-01-16 1963-09-24 Nat Connector Corp Electrical connector assembly
US3262088A (en) * 1964-05-19 1966-07-19 Cambridge Thermionic Corp Connector and jack therefor
GB1109373A (en) * 1966-01-19 1968-04-10 Carr Fastener Co Ltd Plug contact
US3414871A (en) * 1965-02-13 1968-12-03 Tuchel Ulrich Electrical connector having a resilient tongue means carrying two detent flaps
GB1170256A (en) * 1966-09-02 1969-11-12 Painton & Co Ltd Improvements in or relating to Electrical Contacts.

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1085584B (de) * 1957-09-24 1960-07-21 Standard Elektrik Lorenz Ag Steckkontaktfeder
US3104925A (en) * 1962-01-16 1963-09-24 Nat Connector Corp Electrical connector assembly
US3262088A (en) * 1964-05-19 1966-07-19 Cambridge Thermionic Corp Connector and jack therefor
US3414871A (en) * 1965-02-13 1968-12-03 Tuchel Ulrich Electrical connector having a resilient tongue means carrying two detent flaps
GB1109373A (en) * 1966-01-19 1968-04-10 Carr Fastener Co Ltd Plug contact
GB1170256A (en) * 1966-09-02 1969-11-12 Painton & Co Ltd Improvements in or relating to Electrical Contacts.

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
National Connector Corp., Form No. 1003, 1963 01. *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4252864A (en) * 1979-11-05 1981-02-24 Amp Incorporated Lead frame having integral terminal tabs
US4315663A (en) * 1980-03-10 1982-02-16 Amp, Inc. Multiple position brush connector
US5226840A (en) * 1991-05-28 1993-07-13 Eaton Corporation Electrical connector terminal and contact
WO1996002960A1 (en) * 1994-07-15 1996-02-01 Berg Technology, Inc. Zif for plastic chip carrier
US5921784A (en) * 1997-05-08 1999-07-13 Framatome Connectors Usa Inc. High speed card edge connector with tubular shared ground contact
US20120127670A1 (en) * 2007-10-30 2012-05-24 Ronny Ludwig Module housing and method for manufacturing a module housing
US20160064834A1 (en) * 2013-05-13 2016-03-03 Yazaki Corporation Female terminal fitting
US9461372B2 (en) * 2013-05-13 2016-10-04 Yazaki Corporation Female terminal fitting

Also Published As

Publication number Publication date
FR2084892A5 (en, 2012) 1971-12-17
GB1303604A (en, 2012) 1973-01-17
DE2025583A1 (de) 1971-10-07
CH515629A (de) 1971-11-15
DE2025583B2 (de) 1972-10-12

Similar Documents

Publication Publication Date Title
US3950065A (en) Connecting device having integral conductor retaining means
US4068915A (en) Electrical connector
US3845455A (en) Tubular conductor-in-slot connecting device
US3891293A (en) Flat cable terminating
US3850500A (en) Stamped and formed post and miniature spring receptacle
JPS5149474A (en, 2012)
US3713079A (en) 16 apc edge connector
US3727175A (en) Fork-shaped contact spring to produce a separable electric connection
US3233208A (en) Contact for direct reception of printed circuit board
US4012102A (en) Solderless electrical contact
US3611275A (en) Thin film clip-lead device
US3806859A (en) Contacts for pin terminals
US3706960A (en) Fork-shaped one-piece electrical spring contacts
EP0021730B1 (en) Electrical contact capable of receiving a mating contact in either of two mutually perpendicular orientations
US3087136A (en) Tube socket
EP0117021B1 (en) Socket connector
US3701967A (en) Female connector strip with interchangeably retained contact springs
US4095868A (en) Contacting device for connecting the end of an electric wire
US3407379A (en) Multi-connector
US2966570A (en) Slide switch
US3605079A (en) Electrical terminal connections
GB1581397A (en) Fuse clips
US3790918A (en) Electrical connector
US3730972A (en) Wire-wrap terminal and a method of making a wire-wrap connection
US3410952A (en) Electrical bus strip