US3699498A - Devices for making electrical connections - Google Patents

Devices for making electrical connections Download PDF

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Publication number
US3699498A
US3699498A US33211A US3699498DA US3699498A US 3699498 A US3699498 A US 3699498A US 33211 A US33211 A US 33211A US 3699498D A US3699498D A US 3699498DA US 3699498 A US3699498 A US 3699498A
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United States
Prior art keywords
terminals
terminal
receiving
conductors
grooves
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Expired - Lifetime
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US33211A
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English (en)
Inventor
Edwin C Hardesty
Charles L Krumreich
Albert E Mulbarger Jr
Stephen W Walden
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AT&T Corp
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Western Electric Co Inc
Bell Telephone Laboratories Inc
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Publication of US3699498A publication Critical patent/US3699498A/en
Assigned to AT & T TECHNOLOGIES, INC., reassignment AT & T TECHNOLOGIES, INC., CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE JAN. 3,1984 Assignors: WESTERN ELECTRIC COMPANY, INCORPORATED
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/60—Contacts spaced along planar side wall transverse to longitudinal axis of engagement
    • H01R24/62—Sliding engagements with one side only, e.g. modular jack coupling devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R2107/00—Four or more poles

Definitions

  • ABSTRACT phone A positioned in FOREIGN PATENTS OR APPLICATIONS Machine Design, 1967, pages 180- Primary'Examiner-Joseph H. McGlynn AttorneyW. M. Kain, R. P. Millerand Don P. Bush Identical miniature plugs are attached to both ends of a telephone cord.
  • the plugs are mated with miniature jacks in the handset and in the base of a tele plurality of stand-up, blade terminals are spaced troughs of a housing of the plug with each of the terminals having tangs that pierce the insulation of insulated tinsel conductors of the cord placed in the CONNECTIONS ry Hall, Md.; Charles L. Krumreieh; Albert E. Mulbarger, Jr., both of Indianapolis, Ind.; Stephen W. Walden, Morral Township, Shelby County, Ind.
  • PAIENTEDom 1 1 m2 SHEET 1 [IF 7 lNl/ENTORS EC HARDESTV CL. KRUMRE/CH AE. MULBARGER JR.
  • the invention relates to devices for making an electrical connections; and more particularly, to miniature devices for making electrical connections between conductors and electrically conductive terminals wherein the conductive terminals are assembled with dielectric members to form plugs and jacks and for then mating the plugs and jacks to make electrical connections between the terminals of the plugs and the terminals of the jacks.
  • the plug described in US. Pat. No. 3,369,214 includes. a number of plastic parts which are riveted together. As the riveted plugs are subjected to the high temperatures needed to render the cords retractile, the stresses introduced by the riveting of the plastic parts together may manifest themselves in distortions of the plastic components of the plug. Hence, when the plugs are formed of molded pieces of plastic which are riveted together, it becomes impractical to preassemble the plugs to cordage which will eventually be rendered retractile. The retractile cords must be handled individually by an operator doing the attachment process with accompanying loss in operator handling time.
  • the connector can be exposed to the same environments to which the cord is exposed for treatment without the connector incurring any degradation of its properties.
  • the connecting device described in the Hardesty ap plication can be fabricated by using conventional molding techniques with provisionsfor electrical conductors having electrically conductive terminals attached thereto, and which can be readily assembled to, and disassembled from, an integral dielectric portion without distortion of the terminals.
  • the present invention contemplates a device for making an electrical connection which includes a plug assembly having mating dielectric parts which are provided with facilities for receiving a plurality of conductors to confine and separate the conductors.
  • One of the mating parts has terminal-receiving facilities formed therein and has a sembly includes mating dielectric parts having facilities for receiving a plurality of conductors and for confining individually the conductors.
  • One of the mating parts of the jack assembly has walls which define terminalreceiving passages.
  • the jack assembly also includes a plurality of electrically conductive terminals with at least portions positioned in the passages in the one part of the jack assembly and designed to become, and be retained, engaged electrically with conductors positioned therein when the parts of the jack assembly are mated.
  • the walls of portions of the terminal-receiving passages are designed to permit a predetermined lateral deflection of the associated portions of the associated terminals.
  • Portions of the jack-assembly terminals are received in the associated ones of the terminal-receiving facilities of the plug assembly to engage electrically with the associated plug-assembly terminals when the plug assembly is inserted into the cavity of the jack assembly.
  • Each of the jack-assembly terminals has at least a portion thereofanchored in the jack assembly and has the portion thereof which engages the associated terminal in the plug assembly being received in the portions of the associated passage and designed to have a predetermined lateral deflection to facilitate the mating of the plug and jack assemblies, and to maintain good electrical contact between the jack-assembly terminals and the plug-assembly terminals.
  • FIG. I is a perspective view of a telephone set showing a retractile cord having an inventive plug attached to each end thereof and inserted into an inventive jack in a handset and a base portion of the telephone set;
  • FIG. 2 is an exploded perspective view of the inventive device which illustrates the plug aligned with, but disassembled from the inventive jack;
  • FIG. 3 is an enlarged exploded sectional view of the inventive plug of FIG. 2 which illustrates individual conductors of a jacketed cord which are to be confined between a mating lid and base of the plug and further illustrating one of a plurality of stand-up blade terminals aligned with the plug for assembly thereto;
  • FIG. 4 is a plan view of the base of the plug of FIG. 2 which illustrates several details of that portion of the base which mates with the lid;
  • FIG. 5 is a bottom plan view of the base of the plug of FIG. 2 which illustrates a plurality of terminal-receiving grooves having flared entrances;
  • FIG. 6 is a bottom plan view of the lid of the plug of FIG. 2 which illustrates several details of that portion of the lid which mates with the base;
  • FIG. 7 is a top plan view of the lid of the plug of FIG. 2.
  • FIG. 8 is an enlarged exploded sectional view of the inventive jack of FIG. 2 taken along lines 8-8 which illustrates a housing and a cover with one of a plurality of terminals aligned with the jack for mounting on the housing;
  • FIG. 9 is an end elevational view of the housing of the jack of FIG. 2 taken along lines 9-9 thereof;
  • FIG. 10 is a bottom plan view of the cover of the jack shown in FIG. 8;
  • FIG. 11 is an end elevational'view of the housing of the jack of FIG. 2 taken along lines 1 l-11 thereof;
  • FIG. 12 is a sectional view of the inventive device of FIG. 2, which illustrates an assembled one of the plugs inserted into a cavity in an assembled one of the jacks in, for example, the base portion of a telephone;
  • FIG. 13 is a complete sectional view of the assembled device of FIG. 12 taken along lines 1313 thereof which illustrates the mating of the terminals of the plug with the terminals of the jack;
  • FIG. 14 is a view similar to FIG. 13 with the plug withdrawn from the cavity in the jack;
  • FIG. 15 ' is an exploded perspective view of the inventive device which illustrates the inventive plug aligned with, but disassembled from, another embodiment of the inventive jack;
  • FIG. 16 shows an elevational view, partially in section, of a handset portion of a telephone showing still another embodiment of the inventive jack
  • FIG. 17 is an enlarged sectional view of the embodiment of the inventive jack of FIG. 16.
  • FIG. 1 there is shown a telephone, designated generally by the numeral 30, which includes a base, designated generally by the numeral 31, and a handset, designated generally by the numeral 32.
  • a line cord (not shown) interconnects the base 3 1 and a terminal block (not shown).
  • the line cord (not shown) in general use today is a straight cord.
  • the retractile cord 33 is provided with a plug, designated generally by the numeral 34, at the handset end thereof, and with a plug, designated generally by the numeral 36 at the base end thereof.
  • the plug 34 is adapted to be mated with a jack, designated generally by the numeral 38, which is mounted in the handset 32, while the plug 36 is adapted to be mated with a jack, designated generally by the numeral 37, mounted in the base 31 of the telephone 30.
  • the plugs 34 and 36 attached to opposite ends of any one cord 33 are identical and are designed to be received universally in any one of the jacks which will be installed in the telephone apparatus.
  • retractile cords be used for both the line cord and the handset cord, then precautions would have to be taken so that an installer may readily identify which is the line cord and which is the set cord.
  • FIG. 2 there is shown an exploded perspective view of the plug 34 and the jack 37 which embody the principles of theinvention.
  • the retractile cord 33 includes a jacket 39 and a plurality of insulated conductors 41-41. A portion of the jacket 39 is removed from the cord 33 adjacent each end thereof to facilitate connecting the conductors 41-41 at each end of the cord to one of the plugs 34-34.
  • the plug 34 includes a rigid, dielectric base portion, designated generally by the numeral 42, and a mating rigid, dielectric lid portion, designated generally by the numeral 43.
  • thebase portion 42 includes a passage 44 having a plurality of spaced parallel longitudinally formed partitions 46-46 formed integrally with the base portion.
  • the partitions 46-46 project into the passage 44 and together with a side wall 47 and a side wall 48 of the base portion form a plurality of conductor-receiving troughs 49-49 for receiving the individual conductors 41-41 of the cord 39.
  • the conductor-receiving troughs 49-49 confine the conductors 41-41 against lateral movement in the passage 44.
  • a plurality of parallel-formed terminal-receiving grooves 53-53 are formed in the base portion 42 to open to a surface 52 with each one of the grooves being associated and aligned with an associated one of the conductor-receiving troughs 49- 49.
  • Each one of the terminal-receiving grooves 53-53 communicates with the associated one of the conductor-receiving troughs 49-49 by a slotted opening 54 (see FIGS. 4 and 5).
  • each one of the terminal-receiving grooves 53-53 has a flared entrance 56 which opens to a surface 57 (see FIG. 5) which extends transversely of the surface 52 of the base portion 42.
  • Each of the terminal-receiving grooves 53-53 has a restrictive portion 58 (see FIG. 5) formed at one end thereof and a shoulder 59 projecting transversely of and into the entrance 56 at the other end thereof.
  • a raised portion 61 (see FIGS. 2 and3) is formed integrally with the base portion 42 transverse of a longitudinal axis of the passage 44 and projecting into the passage.
  • the base portion 42 is formed with a transversely extending channel 62 (see FIGS. 2 and 3) which is interposed between the raised portion 61 and the conductor-receiving troughs 49-49.
  • the base portion 42 has several additional features for facilitating the assembly of the cord 33 and the lid portion 43 therewith.
  • the base portion 42 of the plug 34 also includes a guideway 63 opening to the outwardly facing surface of each of the side walls 47 and 48 thereof (see FIGS. 2 and 4).
  • a plurality of energy directors or guides 64-64 are formed integrally with a top surface 66 of the walls 47 and 48 and along topsurfaces of the partitions 46-46 (see FIGS. 2 and'4).
  • the energy directors 64-64 are dimensioned to provide for adequate bonding of the lid portion 43 to the base portion 42 in accordance with the specifications providedby manufacturers of commercial ultrasonic equipment. For example, reference is made to an article by D. J. Kolb, Designing PLastic Parts for Ultrasonic'Assembly printed in the Mar. 16, 1967 issue of Machine Design.
  • each one of the terminals 71-71 Prior to the assembly of the lid portion 43 with the base portion 42 of the plug 34, electricallyconductive terminals 71-71 are assembled to the base portion. As can best be seen in FIGS. 2 and 3, each one of the terminals 71-71 is generally L-shaped andmade from a generally flat strip of and electrically .conductive resilient material such as phosphor-bronze. Moreover, each one of the terminals 71-71 includes at least one contact tang 72 which is usedto pierce the insulation of an associated one of the conductors 41-41 to establish electrical contact therewith.
  • the terminals 71-71 shown in FIG. 2, have two contact tangs 72-72 formed integrally therewith to facilitate penetration of the insulation of the-conductors 41-4lto insure engagement of the tangs with the conductive portions of the conductors.
  • the tangs 72-72 are coined so that one sideof one of the tangs is sloped in one direction while the opposite side of the other one of the tangs is sloped in another direction at some angle to the one direction.
  • Each one of the terminals 71-71 is also formed with a plurality of anchoring barbs 73-73 which penetrate the material defining the terminal-receiving grooves 53-53 and the slotted openings 54-54 of the base portion42 when the terminals are assembled therewith in order to secure the terminals withinthe. base portion.
  • the terminals 71-71 are assembled to the base portion 4.2 by aligning the terminals with associated ones of the terminal-receiving grooves 53-53.
  • Each one of the terminals 71-71 is aligned with the associated one of the terminal-receiving grooves 53-53 so that an extended portion 74 (see FIG. 3) of the terminal is aligned with the associated one of the slotted openings. 54-54.
  • a leading end 76 thereof is moved into engagement with the shoulder 59 (see FIG. 5) formed at the other end of the terminalreceiving groove.
  • a trailing end 77 of the terminal 71 is received in therestrictive portion 58 (see FIG. 5) of the aligned terminal-receiving groove 53. In this way, the terminal 71 is restrained from unintended longitudinal movement relative to the base portion 42. 7
  • each of the terminals 71-71 is also formed with a crown 78 for engaging the opposed wall of the associated slotted opening 54.
  • the crown maintains the terminal 71 to one side of the terminal-receiving groove 53 to prevent lateral displacement thereof during the insertion process in the associated one of the terminal-receiving grooves and maintains the terminalin engagement with the adjacent wall of the groove.
  • a contact portion 79 of each of the terminals 71-71 is seated properly within the associated one of the terminal-receiving grooves 53-53, with the leading end 76 of each of the terminals in engagement with the shoulder 59 and with the trailing end received in the restrictive portion 58.
  • the lid portion 43 which is designed to be mated with the base portion 42 to form the plug 34.
  • the lid portion 43 includes a plurality of spaced parallel longitudinally formed ribs 81-81 which project from a surface 82 thereof. When the lid portion 43 is aligned with the base portion 42, each one of the ribs 81-81 is aligned with an associated one of the conductor-receiving troughs 49-49.
  • the conductors 41-41 are separated and individual ones thereof placed in the associated ones of the conductor-receiving troughs 49-49 to be confined laterally between adjacent ones of the partitions 46- 46. Then, when the lid portion 43 is mated with and bonded ultrasonically to the base portion 42, the ribs 81-81 are interposed between associated ones of the partitions and extend into associated ones of the conductor-receiving troughs 49-49.
  • the ribs 81-81 engage the associated ones of the conductors 41-41 in the associated ones of the conductor-receiving troughs 49-49 and confine the conductors between the ribs and the bottom of the troughs while the conductors are confined laterally between the adjacent ones of the partitions 46-46.
  • the tangs 72-72 of the associated ones of the terminals 71-71 are caused to penetrate the insulation of the conductors 41-41 and establish electrical contact between the terminals and the conductors.
  • the thickness of the terminals 71-71 is smaller than the diameter of the conductors 41-41 and the mating of the lid portion 43 to the base portion 42 could tend to roll the conductors laterally and squeeze the conductors between the associated terminal and the wall of the associated trough 49 instead of achieving the required penetration of the insulation by the tangs 72-72.
  • the coining of the contact tangs 72-72 is accomplished to have the dimensions transverse of the terminals between the tips of the contact tangs to be such that the insulation of the conductors 41-41 will necessarily be penetrated when the lid portion 43 is mated to the base portion 42.
  • the lid portion 43 has several additional features for facilitating the assembly of the cord 33 and conductors therewith.
  • the lid portion 43 is formed with raised portion 83 (see also FIG. 6). transversely of the ribs 81-81 and which cooperates with the raised portion 61 of the base portion 42 to clamp the jacket 39 of the cord 33 therebetween (see FIG. 12) to provide strain relief for the jacketed portion of the cord.
  • the cooperating raised portions 61 and 83 have a rounded configuration to avoid sharp corners which constitute high stress areas and could be melted during the ultrasonic bonding of the lid portion 43 to the base portion 42.
  • the lid portion 43 is also formed with a ridge 84 formed transversely of the ribs 81-81 and interposed between the ribs and raised portion 83.
  • the ridge 84 cooperates with the channel 62 to form a labyrinth and cause the individual conductors 41-41 to follow a tortuous path therethrough (see FIG. 12). This provides a snubbing action for the individual conductors 41-41 thereof (see FIG. 3) and provides strain relief for the individual conductors.
  • the lid portion 43 includes a pair of spaced grooves 85-85 (seeFIG. 6) which'open to a surface which is adjacent the base portion.42 when the lid portion is mated to the base portion.
  • One of the ribs 81-81 which is adjacent one of the grooves 85-85 includes a lip 90 formed integrally therewith. The lip 90 projects partially across and is undercut to space the lip above the bottom of one of the grooves 85-85.
  • the grooves 85-85 and the lip 90 are used for mounting facilities which latch the plug 34 to the jack 37.
  • the lid portion 43 is provided with facilities for assembly thereof with the base portion 42.
  • a positioning key 86 (see FIGS. 2 and 6) is formed integrally withthe lid portion 43 on each side thereof and projects laterally from the surface 82 thereof.
  • the lid portion 43 is aligned with the base portion 42 to align the ribs 81 with the conductorreceiving troughs 49-49 and to align the positioning keys 86-86 with the guideways 63-63 formed in the base portion.
  • the positioning keys 86-86 are received in the guideways 63-63 to prevent inadvertent relative movement between the base portion and the lid portion during the ultrasonic bonding of the lid portion to the base portion.
  • the lid portion 43 has a recess 87 having a narrow portion 88 extending from one end thereof.
  • the lid portion 43 is formed with a T-shaped block 91, spaced from side walls 93 and 94 of the lid portion, projecting into the recess 87 and having a tongue 92 for guiding the plug 34 into the jack 37.
  • the lid portion 43 is formed with a pair of spaced bumpers 80 projecting from a leading end thereof.
  • a latch designated generally by the numeral 95, which, for example, may be made from a flat piece of resilient metal or from a plastic material, is attached to the lid portion 43 spanning the T-shaped block 91.
  • the latch 95 is formed to have a pair of spaced securing fingers 96-96 (see FIG. 3), having hooked ends, which are mounted in the grooves 85 in the lid portion3, with the hooked ends projecting outwardly from one end thereof.
  • the other ends of the securing fingers 96-96 are then reversely bent to form spaced side or leg members 97-97.
  • One of the fingers 96-96 is pressed past the overhanging lip and snapped into place in the groove 85 so that the finger is retained between the groove and the base to prevent unintended lateral movement thereof.
  • the hooked ends of the fingers cooperate with holes 89- 89 in the base portion to prevent unintended longitudinal movement.
  • the side members 97 -97 are formed to continue laterally toward one another with arm portions 98-98 which are joined to a release tab 99.
  • the release tab 99 When an operator depresses the release tab 99, the side members 97-97 are designed to be received in the space between the T-shaped block 91 and the side walls 93 and 94, and the release tab is designed to be moved into the narrower portion 88 of the recess 87.
  • the jack 37 is used to connect electrically a plurality of conductors 101-101 (see FIG. 12) from within the handset 32, for example, to a plurality of terminals, designated generally by the numerals 102- 102.
  • Each of the terminals 102-102 is generally U- shaped and made from a substantially flat piece of electrically conductive spring-like stock material such as phosphor-bronze having a thickness t.
  • the thickness of the terminals 102-102 issubstantially less than the dimensions of the terminals in the plane of the U.
  • Each of the terminals 102-102 has a first leg 103 connected to a second opposite leg 104 by a connecting portion 105.
  • the first leg 103 has at least one contact tang 106 formed integrally with, and extending laterally therefrom.
  • the first leg 103 also has an upstanding portion 107 formed at a free end thereof (see FIGS. 2 and 8).
  • the second leg 104 has a first crown or dimple-like I projection 108 and a second crown 109 projecting laterally from opposite sides thereof (see FIGS. 2 and 8).
  • each of the terminals 102-102 has a eutout portion 110 at the intersection of the connecting portion 105 and the second leg 104.
  • FIGS. 1 eutout portion
  • each of the second legs 104-104 is formed so that a portion thereof adjacent the free end is bent out of the plane of the terminal. This prestresses the terminal 102 and presets the terminal to insure that the leading ends of the terminals will be received in the flared entrances 56-56, and cause additional pressure to insure the engagement of the crown 108 with the associated one of the terminals 71-71 when the plug 34 is mated with thejack 37.
  • the jack 37 includes a housing, designated generally by the numeral 111 (see FIG. 2) in which are mounted the terminals 102-102.
  • the housing 111 is made from a block of rigid dielectric material similar to that used to construct the plug 34.
  • the jack housing 111 has a cavity 112, complementary to at least portions of the plug, formed therein and opening to a surface 113 of the housing.
  • the cavity 112 is defined in part by spaced side walls 114 and 116, a bottom wall 117, a rear wall 118 (see FIG. 8), a main body portion 119 of the housing, and an overhang 120.
  • the housing 111 is formed with a plurality of spaced parallel terminal-receiving grooves 121-121 opening to two adjacent transversely extending external surfaces 122 and 123 thereof (see FIG. 11).
  • Each of the terminal-receiving grooves 121-121 has a narrow terminahreceiving portion 124 for receiving the first leg 103 of one of the terminals 102-102 and a somewhat wider conductor-receiving portion 126 which opens to thesurface 122.
  • the conductor-receiving portions 126-126 of the terminal-receiving grooves 121-121 extend from the surface 123 (see FIGS. 8 and 9) to a point spaced from the external wall 113.
  • the terminal-receiving portions 124- which are somewhat wider than the slots 125-125 to facilitate insertion of the second legs 104-104 of the terminals 102-102 having the crowns 108 and 109 into the cavity 112.
  • the main body portion 119 of the housing has a lip 127 which extends above the surface 122 (see FIGS. 2 and 9).
  • A'plurality of slotted openings 128-128 are cut through the lip 127 and connect with associated ones of the terminalreceiving portions 124-124 of the terminal-receiving grooves 121-121.
  • the rear wall 118 extends only partially along the side walls 114 and 116 toward the body portion 119.
  • the bottom wall 117 is formed with a plurality of internal grooves 129-129 (see FIGS. 2 and 9) which face into the cavity 112 and a bridge 131 (see FIG. 8) spanning the grooves.
  • the terminal-receiving grooves 121-121 and 125- 125 and the internal grooves 129-129 define generally U-shaped passages for receiving the terminals 102-102.
  • Each of the terminals 102-102 is mounted in the housing 111 with the first leg 103 thereof anchored in the terminal-receiving portion 124 of the associated one of the terminal-receiving grooves 121- 121 with the tangs 106-106 thereof protruding into the conductor-receiving portion 126 (see FIG. 12).
  • the connecting leg of each of the terminals 102- 102 is received in the portion of the terminal-receiving groove 121 which opens to the external surface 123 and in the associated oneof the grooves -125 in the rear wall 118.
  • the second leg 104 of each of the terminals 102-102 is inserted through the associated one of the holes 130-130 and is positioned in an associated one of the grooves 129-129 with the cutout portion 110 seated in engagement with the bridge 131.
  • the terminals 71-71 are flush with the surface 52 of the base portion 42 of the plug 34.
  • the second legs 104-104 are not flush with the tops of the walls of the grooves129- 129, but instead protrude thereabove. The portion of each of the second legs 104-104 which protrudes above the tops of the groove walls is thus made available for receipt in an associated one of the terminalreceiving grooves 53-53 when the plug 34 is mated to the jack 37.
  • each of the grooves 129-129 in a direction transverse to the longitudinal axis of the grooves is somewhatlarger than the thickness of the second leg 104 of the terminal 102 to be received therein.
  • the grooves 129-129 function to insulate the 1 1 second legs 104-104 from one another and limit the lateral movement of the second legs. In this way the deflection of the second legs 104-104 of the terminals 102-102 is controlled to prevent the second legs from being turned out of alignment with the longitudinal axis of the jack 37 when the plug 34 is inserted into the jack.
  • the terminals 102-102 are mounted in the housing 111 so that the first legs 103-103 are anchored therein. This causes bending stresses to be developed in the second legs 104-104 which are free to be deflected in the grooves 129-129 as the second legs are mated with the terminals 71-71 of the plug 34.
  • the resiliency of the material of the terminals 102-102 causes thepre-stressed legs 104-104 to maintain the crown 108 in engagement with the associated one of the terminals 71-71.
  • the terminals may be subjected to torsional stresses when the plug 34 is inserted into the jack 37.
  • the first legs 103- 103 of the terminals 102-102 are anchored inthe housing 111
  • the second legs 104-104 are designed to be deflected laterally within predetermined limits.
  • the deflection of the second legs 104-104 may be accompanied by a certain amount of twist in the connecting legs 105-105 which permits a controlled reduction of the bending stresses in the second legs.
  • the mounting of the terminals 102-102 is designed to optimize the engagement thereof with the terminals 71-71 without causing unduly high bending stresses in the terminals 102-102.
  • the housing 111 has several additional features to facilitate the assembly and installation thereof with telephone apparatus.
  • the housing 111 includes a stud 132 formed with the bottom wall 117 and depending therefrom.
  • the stud 132 is received in an opening (not shown) in the telephone base 31, for example, to position accurately the jack 37 therein.
  • a mounting lug 133 extends laterally from each of the side walls 114 and 116 to permit attachment of the jack 37 to the telephone 30 or a terminal block (not shown).
  • the housing 111 is also formed with a guide slot 134 in the overhang 120 of the main body portion 119 thereof for receiving the tongue 92 of the lid portion 43 of the plug 34 to guide the plug into the cavity 112.
  • a pair of spaced alignment keys 136-136 are formed integrally with the housing 111 and extend from the surface 122 thereof (see FIGS. 2 and 9) to facilitate assembly of the housing with a cover 141.
  • the cover 141 is adapted to be mated with the housing 1 11.
  • the cover 141 has a plurality of ribs 142-142 (see FIG. formed on one surface thereof and which are received in associated ones of the terminal-receiving grooves 121-121 when the cover is mated with the housing 111.
  • the cover has alignment slots 143-143 cut in opposed lateral edges thereof for receiving the alignment keys 136-136.
  • a plurality of energy guides 144-144 are formed on an underside thereof to facilitate the bonding ultrasonically of the cover 141 to the housing 111.
  • the cover 141 has a notch 145 formed along one edge thereof with the notch dimensioned to receive the lip 127.
  • the cover 141 has a plurality of cul-de-sacs 146-146 formed along a trailing edge thereof and aligned with associated ones of the terminal-receiving grooves 121-121.
  • the cul-de-sacs 146-146 are formed having an inner portion which is sized to that of the diameter of one of the conductors 101-101. But the entrance to each of the cul-de-sacs 146-146 is somewhat narrowed (see FIG. 10) so that one of the conductors must be .compressed between opposing bights 147-147 to be moved into the inner nesting portion.
  • the conductors 101-101 are pressed into associated ones of the cul-de-sacs 146-146 to provide strain relief for the conductors during the use of the telephone 30.
  • a raised portion 148 formed on the underside of the cover 141 presses the conductor 101 against the surface 122 to provide additional strain relief for the conductors.
  • the mini plug-34 and jack 37 have dimensions small enough so that the jack may be installed in existing'telephone apparatus.
  • the terminals 71-71 are approximately 0.345 inch long with a thickness of 0.010 inch.
  • the plug 34 measures approximately 0.595 inch along a longitudinal axis'through the passage 144 thereof, by 0.332 inch wide, by 0.360 inch deep as measured from the surface 52 of the b'aseportion 42 'to the external surface of the lid portion 43 when the lid portion is mated with the base portion.
  • the housing 111 of the jack 37 has an approximatelength of 0.400 inch, a width of 0.470 inch and a height of 0.770 inch.
  • terminals 71-71 and 102-102 are mounted in the plug 34 and the jack 37, respectively, with a minimum center to center spacing of approximately 60 mils which permits the miniature sizes of the dielectric parts.
  • the mounting arrangement of the terminals 71- 71 and 102-102 together with the conductors permits terminals to be of a blade, stand-up type with the thickness thereof being generally smaller than the cross sectional dimension of the conductors.
  • asubscriber or an installer moves the plug 34 into proximity of the jack 37 and aligns the plug with the jack so that the tongue 92 is aligned with the guide slot 134 in the housing 1 1 1.
  • the operator moves the plug 34 along a path of travel parallel to the longitudinal axis of the passage 44 in the plug and into the cavity 112 until the bumpers -80 of the lid portion 43 engage the rear wall 118.
  • the seating of the cutout portion of the terminals 102-102 with the bridge 131 resists the forces imparted to the terminals as the terminals are moved into the flared entrances 56-56 of the plug 34.
  • the second leg 104 of each of the stand-up blade terminals 102-102 of the jack 37 is received in an associated one of the terminal-receiving grooves 53- 53 of the base portion 42 to engage the associated ones of the terminals 71-71 of the plug 34 (see FIGS. 12 and 13). Because of the pre-set of portions of the second legs 104-104, the crowns 108, which are moved first into the associated ones of the grooves 53-53 tend to be urged into engagement with the associated ones of the terminals 71-71. As can best be seen in FIG. 13,
  • the crown 109 on each of the second legs 104-104 of the terminals 102-102 engages the opposed wall of the associated terminal-receiving groove 53 to further urge the crown 108 of the terminal into engagement with the associated one of the first terminals 71-71 secured within the terminal-receiving groove in the plug 34.
  • the overall thickness of the terminal 102 including the projecting dimension of the crowns 108 and 109, plus the thickness of the terminal 71 is greater than the width of each of the terminal-receiving grooves 53- 53.
  • the remaining width of the grooves is less than the overall thickness of the terminal 102.
  • the relation between the overall thickness of the leg 104 and the useable width of the terminal-receiving groove 53 causes the second leg to assume a serpentine shape when the contact portion of the second leg is caused to be moved into the associated one of the terminal-receiving grooves. This urges the crowns 108- 108 into engagement with the terminals 71-71 (see FIG. 13) to insure adequate contact pressure between the crowns 108-108 and the terminals 71-71.
  • the latch 95 provided on the plug 34 is used to secure the plug within the jack 37.
  • the insertion of the plug 34 into the jack cavity 112 causes the latch 95 to be urged into the recess 87 of the lid portion 43 of the plug.
  • the resiliently mounted latch 95 is biased upwards from the recess 87 of the lid portion 43 of the plug to move the arm portions 98-98 toward the main body portion 119 of the jack 37 until the arm portions are captured and retained behind the overhand 120 as the release tab 99 protrudes through the guide slot 134 (see FIG. 12).
  • a replacement cord 33 provided with a plug 34 at each end thereof may be connected easily to the telephone 30.
  • FIG. 15 there is shown a jack 150 which isan alternate embodiment of the jack 37 that embodies the principles of the present invention.
  • a mating plug identical to the plug 34 shown in FIG. 2, except that it is inverted from the position shown in FIG. 2 to mate with the jack 150 to engage a plurality of terminals 152-152 in the jack with associated ones of the terminals 71-71 of the plug.
  • Each of the terminals 152-152 is made from a generally flat strip of electrically conductive spring-like material such as phosphor bronze and is generally U- shaped having a first leg 153 and a second opposed leg 154 connectedtherebetween by a portion 155.
  • the leg 153, a portion of theleg 154 and the connecting portion 155 lie substantially in the same plane.
  • Aportion of the second leg 154 adjacent the free end thereof is prebent out of the plane to prestress the second leg to function similar to the second leg 104 of the terminals 102-102.
  • the first leg 153 is provided with at least one contact tang 156 which pierces the insulation of associated ones of conductors (not shown)and with an upstanding portion 157 for anchoring the terminal against longitudinal movement relative to the jack 150.
  • the second second leg 154 of each of the terminals 152-152 is provided with a crown 158 and a crown 159 formed integrally with and protruding from opposed sides of the second leg.
  • the first and second legs 153 and 154, respectively, of the jack are spaced apart a substantially lesser distance than the first and second legs 103 and 104 of the terminals 102-102 of the jack 37.
  • the distance between the legs 103 and 104 of the terminals 102- 102 must be sufficient 'to receive the plug 34 therebetween (see FIG. 2), withthe contact portions 79-79 of the terminals 71-71-engaging an upper portion of the second legs 104-.104 of the terminals 102-102 (as viewed in FIG. 2) which faces into the U and is closest to the first leg thereof.
  • the plug 34 is received in the jack 150 so that a lower portion (as viewed in FIG. 15) of the second legs 154-154 engage the contact portions 79- 79 of the plug terminals 71-71.
  • the dielectric portion of the jack 150 is similar to that of the jack 37 andincludes a housing 161 molded from a block of dielectric material and having a cavity 162 opening to a surface 163 thereof.
  • the cavity 162 is defined by a side wall 164, a sidewall 166, a bottom wall 167, a rear wall 168, and a main body portion 169 of the housing.
  • the housing 161 has a plurality of terminal-receiving grooves 171 which open to transversely extending external surfaces 172 and 173 thereof.
  • the external grooves 171 each have a narrow terminal-receiving portion 174 for receiving the first leg 153 of one of the terminals 152-152 and a wider"conductor-receiving portion 176 for receiving the conductors (not shown).
  • the tangs 156-156 of the terminals 152-152 protrude into the conductor-receiving portions 176- 176 of the grooves 171-171 to pierce the insulation of the conductors (not shown) and establish electrical contact between the conductors (not shown) and the terminals.
  • the conductor-receiving portions 176-176 of the grooves 171-171 extend from the surface 173 to a point spaced from the surface 163 of the main portion 169 of the housing 161.
  • the terminal-receiving portions 174-174 extend from the surface 173 through a lip 177 tothe surface 163.
  • the rear wall 168 of the housing 161 is formed with a plurality of parallel spaced slotted openings (not shown) with each one of the slotted openings aligned with an associated one of the grooves17l-171.
  • a surface of the main body portion. 169 which faces into the cavity 162 is formed with a plurality of internal grooves 179-179 with the space between adjacent ones of the grooves aligned with associated ones of the slotted openings (not shown) and with associated ones of the grooves 171-171.
  • the grooves 171-171, the slotted openings (not shown) and the internal grooves 179-179 define a generally U-shaped conductor-receiving passage.
  • the terminals 152-152 are mounted in the housing 161 with the first leg 153 of each of the terminalsreceived in the associatedone of the terminal-receiving portions 174-174, the connecting portion 155 of each terminal is received in the associated one of the slotted openings (not shown), and an upper portion (as viewed in FIG. 15) of the second leg 154 of each terminal is received in an associated one of the grooves 179-179.
  • the upstanding portions 167-167 are received in slotted grooves 178-178 which are continuations of the grooves 171-171 and which are cut through the lip 177.
  • the second leg 154 of each of the terminals 152-152 is cantilevered from the connecting portion 155 thereof into the cavity 162.
  • the material defining the grooves 179-179 serves to insulate the second legs 154-154 from each other, and to limit the amount of lateral movement of the second legs.
  • the second leg 154 may pivot or flex from the line of intersection with the connecting portion 155 thereof to facilitate insertion of the plug 34 into the cavity 162 with the accompanying receipt of the terminals 152-152 in associated ones of the terminal-receiving grooves 53-53 in the plug 34.
  • the grooves which limit the lateral movement are formed in the internal face of the main body portion 169 whereas in the hereinabove described embodiment, the grooves were formed in the bottom wall 117 of the housing 111.
  • the housing 161 has a mounting lug 183 attached to and extending from each of the side walls 164 and 166. Moreover, the housing 161 has a guide slot'184 formed in the bottom wall 167 for receiving the tongue 92 on the lid portion 43 of the mating plug 34. As with the heretofore described embodiment, the alignment of the tongue 92 with the guide slot 184 aligns the plug 34 with the cavity 162 to permit the assembly of the plug with the jack 150.
  • the housing 161 also includes a pair of spaced alignment keys 186-186 extending from the surface 172 thereof.
  • the bottom wall 167 of the housing has a strip 188 formed therearound so that when the plug 34 is received in the cavity 162 and the release tab 99 of the latch 95 is depressed and then biased away from the plug, the arm portions 98-98 lock behind the strip 188 to secure the plug within the jack 150.
  • the jack 150 is provided with a cover 191 for engaging the top surface 172 of the housing 161.
  • the cover 191 has a plurality of ribs 192-192 formed on the underside thereof and a pair of spaced alignment slots 193-193 for receiving the alignment keys 186-186.
  • the cover 191 has energy guides (not shown) projecting therefrom for engaging the surface 172 to facilitate the welding ultrasonically of the cover to the housing 161.
  • the ribs 192- 192 are received in associated ones of the grooves 171-171 to move the conductors (not shown) to the bottoms of the conductor-receiving portions 176-176. This causes the contact tangs 156-156 of the terminals 152-152 to pierce the insulation of the conductors -(not shown) to establish electrical contact thereb etween.
  • FIG. 16 Still another embodiment of the invention is shown in FIG. 16 with a jack, designated generally by the numeral 200, mounted in a portion of a telephone handset 32.
  • the jack 200 is adapted to be mated with the plug 34 which is universally connectable to all of the embodiments of the inventive jack.
  • the plug 200 includes at least one electrically conductive terminal, designated generally by the numeral 202, having a first leg 203 connected toa second leg 204.
  • the first leg 203 includes a plurality of contact tangs 206-206 projecting laterally therefrom and an anchoring lug 207 projecting laterally from an opposite side thereof.
  • the axes of the first and second legs 203 and 204, respectively, are at some angle to one another.
  • the terminals 202-202 are not U-shaped.
  • each of the terminals 202- 202 includes a first crown 208 on one side thereof and a second crown 209 on the opposite side thereof. Finally, each of the terminals 202-202 has an enlarged portion 210 extending laterally of a free end thereof.
  • the at least one terminal 202 is shown mounted in a housing, designated generally by the numeral 211, of the jack 200.
  • housing 211 has a cavity 212 for receiving at least portions of the mating plug 34 and also includes a plurality of terminal-receiving grooves 213-213 for receiving the terminals 202-202. Each groove 213 has a wider portion for receiving an associated one of a plurality of insulated conductors 214-214. Moreover, when the terminals 202-202 are mounted in the terminalreceiving grooves 213-213 of the housing 211, the contact tangs 206-206 protrude into the wider portions of the grooves.
  • the housing 211 is also formed with a plurality of keyways 216-216 which open to the terminal-receiving grooves 213-213 for receiving the terminal anchoring lugs 207-207 when the terminals 202-202 are positioned in the grooves. In this way, the terminals 202-202 are anchored against unintended longitudinal movement thereof relative to the housing 211 when the plug 34 is mated with the jack 200.
  • the housing 211 is adapted to be mated with a cover 217 having a plurality of ribs 218-218 which are designed to be received in associated ones of the terminal-receiving grooves 213-213 to confine the individual conductors 214-214 and cause the contact tangs 206-206 to penetrate the insulation and establish electrical contact therewith.
  • the cover 217 also includes a bridge 219 projecting therefrom to clamp the conductors between the cover and the housing to provide strain relief therefor.
  • the contact or second leg 104 and 154 of each of the terminals 102 and 152, respectively, of the jack was received in the associated one of the internal grooves 129 and 179, respectively, formed in the housing and which opened into the cavity 112 and 162, respectively.
  • the terminal-receiving passage is completed by grooves 221-221 formed in the underside of the cover 217 and which face into the cavity 212.
  • the enlarged portions 210-210 thereof are received in associated ones of the internal grooves 221-221.
  • the material between the grooves 221-221 serves to insulate adminals and also limits the lateral movement thereof.
  • the plug 34 In mating the plug 34 with the jack 200, the plug is inserted into the cavity 212, so that the second legs 204-204 of the terminals 202-202are received in associated ones of the terminal-receiving grooves 53-53 of the base portion42 of the plug.
  • the crown209 engages the opposed wall of the terminal-receiving groove to urge the crown 208 on the opposite side of the terminal into engagement with the associated terminal 71 in the base portion 42 of the plug 34.
  • the plug 34 is moved slidably into the cavity 212 in a path of motion along the longitudinal axes of the terminals 202-202 until the plug engages a rear wall 222 of the housing 211.
  • the plug 34 hereinbefore described is designed to be used with all telephone sets.
  • the plug 34 hereinbefore described is attached to each end of all telephone cords, retractileand straight.
  • the straight cords may be used to connect electrically the base .portion 31 of the telephone set 30 with a wall terminal, (not shown).
  • the retractile cords 33-33 are used to connect electrically the handset 32 with the base 31 of a telephone 30.
  • the base portion 42 is made of a material which withstands prolonged exposure to high temperature atmosphere to which the cords 33-33 are exposed when the cords are rendered retractile.
  • the plugs 34-34 may be attached to the retractile cords 33-33 before the cords are rendered retractile.
  • the dielectric portion of the plug 34 is preferably molded from polycarbonate of an injection molding grade which remains distortion-free at temperatures up to a range of 280 to 290 F at atmospheric pressure.
  • An example of such material is Lexan 2805-112, available from the General Electric Company of Pittsfield, Mass.
  • the temperatures to which the cord 33 is exposed in order to set the retractile shape in the cord is 265 F.
  • the polycarbonate in the dielectric portions can readily tolerate the retractile-setting temperature of 265 F without suffering any undesired change of shape.
  • the material from which the plugs 34-34 are constructed may be pigmented to match the color of the telephone 30.
  • mating dielectric parts having facilities for receiving a plurality of conductors to confine and separate the conductors, one of the mating parts formed having terminal-receiving facilities therein; and c plurality of electrically conductive terminals received in associated ones of the terminalreceiving facilities of the one .of the l mating parts, each of the. te rminals having a portion thereof whichextends into the associated one of the conductor-receiving facilities of the one part and which includes means for engaging electrically and for retaining engagement with associated ones of the conductors positioned in the assembly when the-parts are mated;
  • the other one of the mating parts having means formed thereon for causing the engaging means of the portions of the terminals to engage electrically the associated ones of the conductors when the parts are mated
  • a jack assembly designed to be mated with the plug assembly which includes,
  • mating dielectric parts having facilities for receiving a plurality of conductors and confining individually the conductors, one of the mating parts having walls which define terminal-receiving passages, the walls of portions of the passages designed to permit a predetermined lateral deflection of the associated portions of the associated terminals, the jack assembly having a cavity complementary to atleast portions of the'plug assembly to permit insertion of at least portions of the plug assembly into the jack assembly, and i a plurality of electrically'conductive terminals having at least portions thereof received in the terminal-receiving passages, each of the terminals of the jack assembly having a portion thereof which extends into the associated one of the conductor-receiving facilities and which includes means for engaging electrically and being retained in engagement with the conductors positioned therein when the parts of the jack assembly are mated,
  • the other one of the mating parts having means formed thereon for causing the engaging means of the portions of the terminals to engage electrically the associated ones of the conductors when the parts are mated
  • portions of the terminals of the jack assembly being received in the associated onesof the terminal-receiving facilities of the plug assembly and caused to engage electrically with associated terminals in the plug assembly when the plug assembly is inserted into the cavity of the jack assembly,
  • the terminals mounted in the jack assembly having at least a portion thereof anchored in the jack assembly and the portion thereof which engages the associated terminal in the plug assembly being received in the portions of the associated passage and designed to have a predetermined lateral deflection to facilitate the mating of the plug and jack assemblies and to maintain the terminals of the jack assembly in electrical engagement with the associated terminals of the plug assembly.
  • the mating dielectric parts of the plug assembly include means for providing strain relief for the plurality of conductors and for individual ones of the conductors positioned therein, and
  • the mating dielectric parts of the jack assembly includes facilities for providing strain relief for the conductors positioned therein.
  • the one of thedielectric parts of the jack assembly is provided with means formed transversely of the associated terminals for supporting the associated terminals to prevent unintended relative longitudinal movement between the terminals and the one dielectric part of the jack assembly, and
  • each of the terminals associated with the jack assembly is configured to be seated in engagement with the associated supporting means to support the terminals against unintended longitudinal movement when the plug assembly is inserted into the cavity in the jack assembly.
  • releasable latching means associated with the plug assembly and the jack assembly for securing together the plug and jack assemblies to prevent unintended uncoupling thereof.
  • a first unit which includes,
  • a first dielectric part having a plurality of conductor-receiving troughs for receiving associated ones of a plurality of associated conductors and having a plurality of terminal-receiving grooves opening on a surface and communicating with the conductor-receiving troughs;
  • a second dielectric part designed to be mated with the first part and having ribs extending from one surface thereof and received in associated ones of the conductor-receiving troughs of the first part when the second part is mated to the first part to confine the conductors positioned therein between the rib and first part;
  • first terminals inserted into the terminal-receiving grooves of the first part, the first terminals having contact portions and having conductor-input portions extending into the associated one of the conductor-receiving troughs and which includes means for engaging electrically and for retaining engagement with the conductor positioned in the associated trough when the second part is mated to the first part; the ribs on the second dielectric part of the first unit being effective to cause the engaging means. of the portions of the terminals to engage electrically the associated ones of the conductors when the parts are mated, and v a second unit adapted to be mated with the first unit and which includes,
  • first dielectric part having a cavity complementary to at least portions of the first unit designed to be received in the cavity
  • first part of the second unit having a plurality of terminalreceiving grooves opening to an external surface thereof for receiving associated ones of a plurality of associated conductors
  • first part also including a plurality of internal grooves aligned with the terminal-receiving grooves and facing into the cavity, the internal grooves cooperating with the terminal-receiving grooves to define terminal-receiving passages
  • a second dielectric part adapted to be mated with the first part of the second unit, andhaving ribs formed thereon which project into the associated ones of the terminal-receiving grooves to confine the conductors between the ribs and the first part of the second unit when the second part of the second unit. is mated with the first part of the second unit;
  • a plurality of second terminals designed to be positioned in the terminal-receiving passages and having conductor-engaging portions which terminate in the terminal-receiving grooves and which includes means for engaging electrically and for retaining in engagement with the conductors positioned in the terminal-receiving grooves when the second part of the second unit is mated to the first part thereof,
  • the ribs on the second dielectric part of the second unit being effective to cause the engaging means of the portions of the terminals to engage electrically the associated ones of the conductors when the parts are mated
  • each of the second terminals having a portion thereof anchored in the second unit when the second part of the second unit is mated with the first part of the second unit, and having a contact portion adapted to be received in the associated internal groove of the first part of the second unit and being capable of fiexure, with the deflection of the contact portion of the second terminal being limited to within the associated internal groove,
  • At least portions of the first unit being insertable into the cavity of the second unit to cause the contact portion of the second terminal in the internal groove to be moved into the associated-terminalreceiving groove of the first unit to engage the contact portion of the first terminal therein and establish and maintain electrical connection therebetween.
  • a first assembly which includes a first subassembly which includes,
  • a first dielectric part having a passage formed therethrough with a plurality of parallel longitudinally formed partitions projecting into the passage to form a plurality of elongated conductor-receiving troughs for confining and separating associated individual conductors designed to be received therein against lateral movement in the passage and having a plurality of terminal-receiving grooves opening on a surface of the first part and communicating with associated ones of the conductor-receiving troughs, each of the terminal-receiving grooves having a flared entrance openingon the surface of the first part extending transverse to the other surface, each of the terminal-receiving grooves having a restriction at one end and a shoulder projecting transversely of and into the entrance at the other end; and i 1 a second dielectric part having a plurality of ribs formed on one surface thereof, the second part designed to be mated with the first part with the ribs interposed between associated ones of the partitions and extending into associated ones of the conductor-
  • first electrically conductive terminals mounted in associated ones of the terminalreceiving grooves of the first part and having one end in engagement with the shoulder and the other end received in the restriction to confine the opposite ends of the terminal
  • each of the first terminals having barbs formed in tegrally therewith on the ends thereof penetrating the material defining the groove to secure the first terminals within the first part, and having contact portions formed thereon protruding into the associated ones of the conductorreceiving troughs so that when the second part is mated with the first part and the ribs confine the conductors positioned in the associated ones of the troughs, the contact portions of the associated first terminals become engaged electrically with the conductors,
  • each of the first terminals having a crown formed thereon for engaging the opposed wall of the as sociated terminal-receiving groove to maintain the terminal in engagement with the adjacent wall of the associated terminal-receiving groove; and a second assembly which includes,
  • a second subassembly including a first dielectric part having a cavity complementary to at least portions of the first subassembly designed to be received in the cavity, the first part of the second subassembly having a plurality of terminal-receiving grooves opening to an external surface thereof and adapted to receive insulated conductors, and having a plurality of internal grooves formed in one of the surfaces thereof which face into the cavity, are alignedwith associated ones of the terminal-receiving grooves and extend transverse to :the external surface to cooperate with the associated terminalreceiving grooves to define terminal-receiving passages,and
  • a second dielectric part adapted to be'mated with the first part of the second subassembly having a plurality of ribs formed on one surface thereof, the ribs being received in associated ones of the grooves whenthe second part of the second subassembly is mated with the first part of the secondsubassembly, and
  • the second legs of the second terminals extending into the cavity and being confined in associated ones of the internal grooves to engage the associated one of the first terminals when the first assembly is inserted into the cavity longitudinally of the associated second legs of the second terminals,
  • the second terminals being anchored in the first part of the second subassembly with the free ends of the second legs of the terminals extending into the cavity and being designed to be capable of deflection transversely, the transverse movement of the free ends of the second legs being restricted by the associated internal grooves to prevent misalignment of the second terminals and facilitate insertion of the contact portion of each of the second terminals into an associated one of the terminal-receiving grooves in the first part of the first subassembly,
  • each of the second terminals having first and second crowns projecting from opposite sides thereof the second crown being adapted to engage the opposed wall of the associated terminal-receiving groove in thefirst subassembly to urge the associated first crown projecting from the other side of the second terminal into engagement with the associated first terminal.
  • complementary means formed on the first and second parts of the first subassembly transversely of the troughs for clamping a plurality of the conductors therebetween and for anchoring individual ones of the conductors to provide strain relief for the plurality of conductors and for the individual ones of the conductors;
  • each of the second terminals is configured to be seated in engagement with the supporting means when the second terminals are inserted into the l terminal-receiving passages so that when the first assembly is inserted into the second assembly, the second terminals are supported against unintended longitudinal movement.
  • the thickness ofeach of the first terminals plus the overall thickness of the second terminals, including the projecting dimensions of the first and second crowns is greater than the width of the terminal-receiving groove of the first part of the first assembly to cause the second leg of each of the second terminals to assume a serpentine configuration when the second leg is caused to be moved into the associated one of the terminal-receiving grooves and insure that the second crown thereof presses into the opposed walls of the terminalreceiving groove and that the first crown engages the associated first terminal with sufficient pressure to establish adequate electrical contact therebetween.
  • the contact portions formed on the first and second electrically conductive terminals includes at least two tangs spaced along one edge of each of the terminals, each of the tangs being substantially wedge-shaped with a base thereof integral with the main body portion of the terminal and with an apex thereof external of the main body portion, each of the tangs being coined on one side thereof, with the distance between the apices of the tangs as measured orthogonally of the plane of the terminal being predetermined to insure penetration of insulated conductors positioned in the troughs and in the terminal-receiving grooves when the second parts of the first and second dielectric subassemblies are mated with the first parts of the first and second dielectric subassemblies respectively.
  • each of the second electrically conductive terminals is formed with a portion thereof adjacent the free end being bent out of the plane of the terminal to bias the first crown thereof toward the first terminal in the associated terminal-receiving groove to pre-align the free end thereof with the flared entrance to facilitate the mating of the terminals with the first assembly and to urge the bent portions of the second legs toward the plane of the associated first terminals to create adequate pressure contact between the first and second terminals.
  • the device for making an electrical connection as set forth in claim 7, which further comprises:
  • The'device for making an electrical connection defined in claim 7, and which further comprises:
  • the first part'of the second subassembly having an overhanging portion extending into the cavity thereof and having a slot cut therein
  • the second part of the first subassembly having a pair of spaced latch-receiving grooves opening to the one surface thereof, one of the ribs of the second part of the first subassembly having a lip formed integrally therewithand extending partially transversely of one of the latch-receiving grooves to overhang partially the one of the latch receiving grooves, further, the second part of the first subassembly having a U-shaped slot formed in another surface opposed to the one surface opening to a free end of the second part and having a second slot connected to the U-shaped slot and opening to a conductor-input end of the second part,
  • a latch made of a resilient material and including a pair of securing fingers each having an upstanding portion at one end thereof, each of the securing fingers connected to a leg portion extending reversely angularly of the associated securing finger, each of the leg portions having a transversely extending arm portion, the arm portions projecting toward one another, each one of the arm portions connected to one end of a U-shaped release tab designed to be received in the slot in the overhanging portion, the latch being assembled to the second part of the first subassembly with one of the securing fingers being urged past the lip to seat the one securing finger in the associated one of the latch-receiving grooves between the lip and the bottom of the groove and with the other securing finger received in the other one of the latch-receiving grooves, the upstanding portions projecting externally of the second part, oriented toward the conductor-input end of the second part of the first subassembly and being received in the apertures of the first part to prevent unintended

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  • Connector Housings Or Holding Contact Members (AREA)
  • Multi-Conductor Connections (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
US33211A 1970-04-30 1970-04-30 Devices for making electrical connections Expired - Lifetime US3699498A (en)

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US3321170A 1970-04-30 1970-04-30
US23280372A 1972-03-08 1972-03-08

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US5059140A (en) * 1984-01-16 1991-10-22 Stewart Stamping Corporation Shielded plug and jack connector
EP0154414A2 (en) * 1984-02-27 1985-09-11 Amp Incorporated Round cable adaptor for modular plug
EP0154414A3 (en) * 1984-02-27 1988-08-17 Amp Incorporated Round cable adaptor for modular plug
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US4674822A (en) * 1984-11-21 1987-06-23 Virginia Plastics Company Multi-conductor shielded cable
GB2183108A (en) * 1984-11-28 1987-05-28 Anthony R Engelmore Rotatable electrical connector for coiled telephone cords
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US4590337A (en) * 1984-11-28 1986-05-20 Engelmore Anthony R Rotatable electrical connector for coiled telephone cords
US4714440A (en) * 1985-10-28 1987-12-22 American Telephone And Telegraph Company, At&T Technologies, Inc. Universal adapter and methods of and apparatus for making same
US4738635A (en) * 1985-12-19 1988-04-19 Thomas & Betts Corporation Apparatus for field assembling a telephone connection apparatus
US4738631A (en) * 1986-03-27 1988-04-19 Yazaki Corporation Connector
FR2596586A1 (fr) * 1986-03-27 1987-10-02 Yazaki Corp Connecteur electrique
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USRE33647E (en) * 1986-10-06 1991-07-23 Apparatus for anchoring a telephone handset to a telephone housing
US4845774A (en) * 1986-10-06 1989-07-04 Raymond Arzounian Apparatus for anchoring a telephone handset to a telephone housing
EP0602690A2 (en) * 1987-09-28 1994-06-22 Hubble Incorporated Field terminable modular connector
EP0602690A3 (en) * 1987-09-28 1994-08-31 Hubble Inc Modular connector in a connector panel.
US4910359A (en) * 1988-10-31 1990-03-20 American Telephone And Telegraph Company, At&T Technologies, Inc. Universal cordage for transmitting communications signals
US4950176A (en) * 1988-11-18 1990-08-21 At&T Bell Laboratories Modular plug for terminating cordage
US5005284A (en) * 1988-11-18 1991-04-09 At&T Bell Laboratories Method of assembling terminals with modular plug
EP0419766A1 (de) * 1989-09-29 1991-04-03 TKM Telekommunikation und Elektronik GmbH Elektrischer Steckverbinder
US5186644A (en) * 1991-03-13 1993-02-16 Molex Incorporated Electrical connector system
US5340333A (en) * 1993-01-15 1994-08-23 Interconnect Systems Group Inc. Shielded modular adapter
US5584718A (en) * 1993-12-29 1996-12-17 Mitsumi Electric Co., Ltd. Branch-connection connector
US5605467A (en) * 1995-01-19 1997-02-25 Eaton Corporation Cover for battery compartment and communications port
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US5885110A (en) * 1997-03-11 1999-03-23 Lucent Technologies Inc. Snap together spring block and method
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US6293710B1 (en) 1999-10-06 2001-09-25 Lucent Technologies Inc. Optical connector having a one-piece housing
US8834040B2 (en) * 2010-04-16 2014-09-16 Apple Inc. Connectors and cables with an optical transmitter
CN102496820A (zh) * 2011-11-28 2012-06-13 太原斯利德电子技术有限公司 一种电话机连接器
CN102496820B (zh) * 2011-11-28 2013-09-11 郭子民 一种电话机连接器
US20140308850A1 (en) * 2012-12-26 2014-10-16 Molex Incorporated Connector with piercing tail
US9270032B2 (en) * 2012-12-26 2016-02-23 Molex, Llc Connector with piercing tail

Also Published As

Publication number Publication date
JPS5140631B1 (US07223432-20070529-C00017.png) 1976-11-05
FR2090977A5 (US07223432-20070529-C00017.png) 1972-01-14
JPS465987A (US07223432-20070529-C00017.png) 1971-12-06
GB1347166A (en) 1974-02-27
BE766523A (fr) 1971-09-16
DE2120838C3 (de) 1981-01-08
US3761869A (en) 1973-09-25
DE2120838A1 (de) 1971-11-18
DE2120838B2 (de) 1980-04-30

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