US3566344A - Electrical connector receptacles - Google Patents

Electrical connector receptacles Download PDF

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Publication number
US3566344A
US3566344A US726835A US3566344DA US3566344A US 3566344 A US3566344 A US 3566344A US 726835 A US726835 A US 726835A US 3566344D A US3566344D A US 3566344DA US 3566344 A US3566344 A US 3566344A
Authority
US
United States
Prior art keywords
receptacle
contact
base portion
board
spring
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
US726835A
Other languages
English (en)
Inventor
Wladimiro Teagno
Franco Trevisiol
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 Corp
Original Assignee
AMP Inc
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 AMP Inc filed Critical AMP Inc
Application granted granted Critical
Publication of US3566344A publication Critical patent/US3566344A/en
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
    • H01R13/22—Contacts for co-operating by abutting
    • 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
    • H01R12/712—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/714—Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
    • 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
    • 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
    • H01R13/20—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together
    • H01R13/213—Pins, blades, or sockets shaped, or provided with separate member, to retain co-operating parts together by bayonet connection
    • 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
    • H01R13/40—Securing contact members in or to a base or case; Insulating of contact members
    • H01R13/42—Securing in a demountable manner
    • H01R13/428—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members
    • H01R13/432—Securing in a demountable manner by resilient locking means on the contact members; by locking means on resilient contact members by stamped-out resilient tongue snapping behind shoulder in base or case

Definitions

  • This invention relates to an electrical connector receptacle adapted to receive and retain a mating electrical contact.
  • the mating electrical contact is primarily designed to be a conductive electrical surface on the face of a sup port board, such as a printed circuit board.
  • a sup port board such as a printed circuit board.
  • the invention is not limited in its application or use to such mating contacts and can effectively be used with tab or plug inserts of correctly dimensioned proportions.
  • a mating contact In many applications a mating contact has to be connected to and disconnected from an electrical connector receptacle a great many times during the life of the apparatus of which it forms a part. It is therefore essential that no damage is done to the receptacle during either a connect or disconnect operation which would impair its properties, and it is also essential that these operations can be performed quickly and easily.
  • one of the problems of any readily disconnectable receptacle is that if the mating contact is too easily withdrawable the contact pressures and general eflicacy of the electrical contact formed are not high. Furthermore, if the receptacle is used in a situation which is subject to vibration there is a grave risk that the mating contact may be shaken out of engagement with the receptacle.
  • connector receptacles have been proposed in which the two ends of a piece of sheet metal have been bent and bowed towards each other with their extreme ends flared outwards to ease entrance of a mating contact between them.
  • Other receptacles have been formed by using two or more contact spring portions located in a block.
  • Such prior proposals suffer from the disadvantage that good contact pressure cannot be achieved without providing indents in the surface of the sheet metal which scratch the surface of a mating contact or which, if the indents are omitted, are insuflicient to withstand vibration.
  • Multi-part contact springs located in a block are relatively difficult and expensive to produce.
  • an electrical receptacle adapted to receive and retain a mating electrical contact comprising a curved spring contact part and a support part spaced from the spring contact part, the mating electrical contact being arranged to be inserted in the space between the two contact parts, in which the receptacle includes a base portion of sheet metal from which the spring part is integrally formed, the spring part being bent at right angles to the plane of the base portion and being curved in the direction of insertion of the mating contact, and in that the support part is also integral with the base portion and the base portion has means for connecting an electrical conductor to the receptacle.
  • FIG. 1 shows a perspective view of a first form of contact
  • FIG. 2 shows a switch housing and printed circuit board arrangement employing the receptacle of FIG. 1;
  • FIG. 3 shows a detail of a receptacle of FIG. 1 in part of the housing of FIG. 2;
  • FIG. 4 shows a second form of receptacle in a perspective view
  • FIG. 5 shows in a perspective view the receptacle of FIG. 4 in broken section in a housing and engaging a printed circuit board;
  • FIGS. 6 to 11 each show a separate further form of receptacle in perspective view.
  • the receptacle is used here in a switch arrangement for making contact with a printed circuit board 1.
  • the board 1 has a number of conductive paths 2 on one surface. These paths each terminate in a separate land 3 and these lands 3 are spaced around an aperture 4 in the board 1.
  • the aperture 4 has further recesses 5 into the board.
  • the various recesses 5 are at diiferent angles so that a polarizing effect can be given for an insert: into the aperture 4.
  • a rotary member 7 comprising a housing of insulating material and carrying around its outer periphery a plurality of receptacle housings 8 is fitted into the aperture 4 with the receptacle housings 8 in the recesses 5.
  • the housings 8 are of a generally rectangular form and have one open side 9 facing the land 3 associated with each recess 5.
  • each receptacle housing 8 includes an electrical contact receptacle 10 of the kind as shown in more detail in FIG. 1.
  • the receptacle 10 is formed from a single piece of sheet metal and comprises a base portion 11 from one side of which a spring contact part 12 is formed.
  • the part 12 is of strip form and is fixed to base portion 11 at one end 13 and has its free end bent round to form an enclosed loop as shown.
  • a tab 14 carried at this free end engages in. a slot in the strip to retain the loop.
  • the part 12 is bent up at right angles to the plane of the base portion 11 and the edge of part 12 lies on the base portion 11.
  • the part 12 is bent across the portion 11 at an angle b inclined from a front edge 15 of the receptacle.
  • the top end of the receptacle is bent upwards at right angles to the base portion 11 to form a support part 16.
  • This part 16 is curved to form an angle a with the direction of entry of a mating contact with the receptacle. This direction of entry is indicated by the arrow A.
  • a locking lance 17 is pressed out of the base portion 11 to lock with a shoulder 18 in the receptacle housing 8 to retain the receptacle in the housing.
  • the bottom end of the base portion has a crimping ferrule 19 adapted to be crimped onto the wires of a conductor 20 and an insulation-supporting ferrule 21 adapted to be crimped around the insulation of conductor 20.
  • the housing 7 is provided with a locking and locating spigot 22 which engages on initial insertion in a further recess 23 in the board 1 at the edge of the aperture 4 and then passes beyond the board to permit rotation.
  • the spigot and recess enable the housing to be accurately located before being locked to the board.
  • the housing 7 is attached to a knob 24 by which it can be manually rotated in the direction of arrow B to make contact between the receptacles and the conductors on the board 1.
  • the receptacles are secured to respective conductors and are inserted in the receptacle housings 8 from the bottom (FIG. 3) so that the lances 17 lock on shoulders 18 with the front edge 15 of the receptacles facing the open side of the housings 8 and the support part 16 at the top of the housings.
  • the housing 7 is then inserted in the aperture 4 with the spigot 22 correctly 10- cating the housings 8 with respect to the various lands 3 and conductors 2.
  • the knob 24 is rotated in the direction of the arrow B which has the relative effect of moving the lands 3 and the board 1 in the direction of arrow A (FIG. 1).
  • the back of the board i.e. the part not carrying the conductive paths 2
  • spring part 12 bends in the direction of arrow A increasing angle B until the gap is sufficient to admit the board.
  • the land 3 moves over contact part 12, and, due to the spring nature of this part, the board is pressed against the support part 16 and a wiping action between parts 12 and 3 takes place to ensure good electrical contact.
  • Rotary movement stops when the edge of the board abuts the side of the housing 8 opposite the open side.
  • the board and receptacles are now held in good electrical contact and due to the spring action will withstand forming the lands 3 is thus not damaged and is able to be used after disconnection for other connections.
  • FIGS. 4 and 5 A second embodiment of a receptacle is shown in FIGS. 4 and 5 to which reference is now made. Similar parts in these and other figures to parts previously described with reference to FIGS. 1 to 3 have been given the same reference numerals.
  • Receptacle is modified over receptacle 10 in that the support part 16 is not attached to the top end of base portion 11 but to an extension 31 at the rear side of the base portion 11.
  • This extension 31 is bent over to form support part 16 and two ribs 32 are pressed in it to make reinforcing struts.
  • the extension 31 is at right angles to the base portion 11 and forms an end stop for the printed circuit board 1.
  • This receptacle is able, since there is a gap 33 between the top end of base portion 1 and support part 16, to be slipped over the edge of a board 1 at any position along its edge and is not just limited to corner connections as in the previous embodiment.
  • FIG. 5 Such an application is shown in FIG. 5 where a. connector housing 35 is illustrated having one receptacle connector 30 in position.
  • the housing is able to accept other receptacles in line for connection to different conductive paths 2.
  • the housing 35 has an opening 36 along its lower edge so that the edge of the board can fit into it and into the gap 33 of the receptacle 30 until it abuts the end stop 31.
  • the conductive paths 2 will be wiped and contacted by the spring 12 in a similar manner to that described with respect to receptacle 10 previously.
  • the housing is merely an insulator and is not critical in its tolerances so that it can be easily produced with wide tolerances without affecting the quality of electrical contact achieved.
  • the support part is constituted by a part 41 of the base portion 11.
  • the spring part 12 extends through the plane of the base portion 11 so that when a mating contact, such as a printed circuit board, is pushed in the direction of the arrow C it contacts the spring part 12 on one side and the support part 41 on the other.
  • the top end 42 of the base portion 11 acts as an end stop for the mating contact.
  • the wiping action is the same as in the previous embodiments although a different part of the spring part 12 is used for wiping and contact than in the other two embodiments.
  • This type of receptacle is useful where an end-on contact is to be made.
  • the receptacle 45 of FIG. 7 is also useful for end-on connections and employs a larger support part 46 than the part 41 of FIG. 6.
  • This part 46 is formed by bending up a section of the base portion 11 at right angles to that portion. A free end 47 is further bent as indicated to give an end stop for the mating contact.
  • the use of a large area support part 46 gives a more stable support than just an edge such as 41.
  • FIG. 8 shows a receptacle 49 which is basically the same as that of FIG. 1 except that the spring part 12 is modified by the inclusion of a slit 50 dividing the part into two parallel sections 51, 52 over the contact area. This has the advantage that a greater area of contact is possible if the mating contact received in the receptacle has an irregular contact surface.
  • FIG. 9 shows a further modification of the receptacle of FIG. 8 where the curvature of the spring part 12 is permanently set and no tab 14 is necessary.
  • FIGS. 10* and 11 show modified forms of receptacles developed from FIGS. 8 and 9.
  • the spring part is shown as having a straight section 53 and a bowed contact section 54.
  • the contact section 54 having a permanent set in it.
  • the receptacle of FIG. 10 is modified by adding a backing part 55 integral with and bent up from the base portion 11. This backing part 55 lends support to the spring section 54 when it is deflected and ensures good contact pressure.
  • the base portion in each embodiment provides a guide and locating means for a mating electrical contact.
  • the receptacles are preferably constructed from a material such as brass or phosphor-bronze which has good spring characteristics as well as good electrical conductive properties.
  • the receptacles are easy and cheap to produce from sheet material by stamping and forming methods already known and due to their design are able to hold mating contacts in environments subjected to high vibrations without affecting the contact pressure. Due to the resilient nature of the spring part a mating contact although easy to insert needs a much higher force for extraction than insertion.
  • the angle a was set at about 30 and the angle b at about 10, although these angles are not critical.
  • An electrical connector receptacle adapted to receive and retain a mating electrical contact comprising a base portion of sheet metal, an integral spring part having one end attached to said base portion and extending outwardly from said base portion, the spring part being bent at substantially right angles to the plane of the base portion and having a generally circular configuration thereby being curved in the direction of insertion of the mating contact with the other end of the spring part secured to the spring part, an integral support part extending outwardly from the base portion and spaced opposite said spring part thereby defining a contact-engaging area therebetween for receiving the mating electrical contact in the receptacle.
  • An electrical connector receptacle adapted to receive and mate with a mating electrical contact comprising a base portion of sheet metal, a support part integral with and extending outwardly from said base portion, a spring contact part having a substantially straight portion attached to said base portion and a curved portion forming a continuation of said straight portion, a section of said curved portion disposed opposite said support part defining a contact-engaging area therebetween, and a free end of said curved portion being bent round and secured to said straight portion thereby forming a loop.

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  • Coupling Device And Connection With Printed Circuit (AREA)
US726835A 1967-05-15 1968-05-06 Electrical connector receptacles Expired - Lifetime US3566344A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1611467 1967-05-15

Publications (1)

Publication Number Publication Date
US3566344A true US3566344A (en) 1971-02-23

Family

ID=11148584

Family Applications (1)

Application Number Title Priority Date Filing Date
US726835A Expired - Lifetime US3566344A (en) 1967-05-15 1968-05-06 Electrical connector receptacles

Country Status (6)

Country Link
US (1) US3566344A (forum.php)
BE (1) BE715093A (forum.php)
DE (1) DE1765412A1 (forum.php)
ES (1) ES352947A1 (forum.php)
FR (1) FR1562699A (forum.php)
NL (1) NL6806743A (forum.php)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331376A (en) * 1977-04-16 1982-05-25 Ferranti Limited Electric connectors
WO2013157616A1 (en) * 2012-04-19 2013-10-24 Yazaki Corporation Substrate connector

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4331376A (en) * 1977-04-16 1982-05-25 Ferranti Limited Electric connectors
WO2013157616A1 (en) * 2012-04-19 2013-10-24 Yazaki Corporation Substrate connector
US9270044B2 (en) 2012-04-19 2016-02-23 Yazaki Corporation Substrate connector

Also Published As

Publication number Publication date
BE715093A (forum.php) 1968-09-30
DE1765412A1 (de) 1971-07-29
NL6806743A (forum.php) 1968-11-18
FR1562699A (forum.php) 1969-04-04
ES352947A1 (es) 1969-09-01

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