US3609644A - Main frame connector and method - Google Patents

Main frame connector and method Download PDF

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Publication number
US3609644A
US3609644A US867532A US3609644DA US3609644A US 3609644 A US3609644 A US 3609644A US 867532 A US867532 A US 867532A US 3609644D A US3609644D A US 3609644DA US 3609644 A US3609644 A US 3609644A
Authority
US
United States
Prior art keywords
wire
post
slot
connector
body member
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
US867532A
Other languages
English (en)
Inventor
William J Seim
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing Co
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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Application granted granted Critical
Publication of US3609644A publication Critical patent/US3609644A/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
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
    • H01R4/2425—Flat plates, e.g. multi-layered flat plates
    • H01R4/2429—Flat plates, e.g. multi-layered flat plates mounted in an insulating base
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/24—Connections using contact members penetrating or cutting insulation or cable strands
    • H01R4/2416—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type
    • H01R4/242—Connections using contact members penetrating or cutting insulation or cable strands the contact members having insulation-cutting edges, e.g. of tuning fork type the contact members being plates having a single slot
    • H01R4/2425—Flat plates, e.g. multi-layered flat plates
    • H01R4/2429—Flat plates, e.g. multi-layered flat plates mounted in an insulating base
    • H01R4/2433—Flat plates, e.g. multi-layered flat plates mounted in an insulating base one part of the base being movable to push the cable into the slot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/48185—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end
    • H01R4/4819—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar adapted for axial insertion of a wire end the spring shape allowing insertion of the conductor end when the spring is unbiased
    • H01R4/4821—Single-blade spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/48—Clamped connections, spring connections utilising a spring, clip, or other resilient member
    • H01R4/4809—Clamped connections, spring connections utilising a spring, clip, or other resilient member using a leaf spring to bias the conductor toward the busbar
    • H01R4/484—Spring housing details

Definitions

  • ABSTRACT A solderless connector for making spring reserve electrical contact between a main frame post and a pair of insulated wires in a communications installation.
  • This invention relates to solderless wire-connectors and in particular to connectors for use in attaching insulated wires to the contact posts of a telephone main frame assembly.
  • the conventional procedure for attaching communication cable insulated wires to main frame posts is to strip the wire ends and then make a wrap-and-solder connection.
  • the present invention eliminates the need for wire-stripping and soldering, greatly simplifies the operation of making connection between wires and posts, adds an insulating covering to such connectors, and provides trouble-free spring reserve electrical connection between post and wires.
  • FIG. 1 is an exploded view of the connector in perspective
  • FIG. 2A is a longitudinal section of the body and contact member, and 28 a similar section of the cover member taken at line 22 of FIG. 1,
  • FIG. 3A is a transverse section of the body member, and 3B of the cover member, at line 3-3 of FIG. 1,
  • FIG. 4A is a transverse section of the body member, and 4B of the cover member, at line 4-4 of FIG. 1,
  • FIG. 5 is an end view of the cover member from the wire entry end
  • FIG. 6 is an end view of the body member from the wire entry end
  • FIG. 7 is an end view of the body member from the post entry end.
  • the connector consists of a body 10, a cover 11, and a contact element 12, the components being shown in exploded view and with the cover member turned at right angles to its normal position.
  • the body 10 is in the form of an open top hollow boxlike structure having sidewalls 13, 14 and end walls 15, 16.
  • the sidewalls slope inwardly towards the open top.
  • the interior of the body is transversely slotted to provide a narrow slot 17 near the end wall 16.
  • the body member is also slotted at the opposite end to fonn an open slot 18 connecting with the open interior and of dimensions suitable for entry of a main frame soldering post.
  • Triangularly cross-sectioned projections 19, 20, and 21 extend inwardly from walls 13, 14 and respectively, with their lower surfaces in line with the upper level of the slot 18, and parallel with the corresponding segments 43, 44 of the open-centered bottom of said body.
  • the projections 19, terminate short of the slot 17 to permit entry of the contact element during assembly.
  • the front wall 16 of the body member 10 is provided with a generally W-shaped opening 22 as more clearly shown in FIG. 6, the two lobes 23 and 24 defining the position of the wire ends to be inserted within the connector.
  • the lower portion of the wall 16 is inset, as shown most particularly in FIG. 2A, with its inner surface in close proximity to the slot 17.
  • the cover member 11 fits within, and flush with the open top of, the body 10 when the connector is applied to a wire pair, but is initially retained in the extended or open position by outwardly slanted resilient side extensions 25, 26 which make contact with the slanted inner sidewalls ofthe body. In closed position the slanted sidewalls of the cover fit snugly against the slanted sidewalls of the body.
  • the cover is transversely slotted to provide a narrow slot 27 in line with the slot 17 of body 10, and has parallel longitudinal channels 28, 29 separated by a central extension 30 and extended through the forward portion 31 of the cover as circular openings 32, 33. Thin sections 34, 35 of the insulating material of which the part is constructed extend across the opposite or inner ends of the open channels 28 and 29.
  • the contact member 12 consists of a wire-connecting flat plate portion 36 fitting within the slots 17 and 27 in the body and cover members respectively and doubly slotted to provide open-ended wire-receiving slots 37, 38 in line with the channels 28, 29.
  • a bowed post-contacting plate portion 39 Extending from the opposite end of the contact element is a bowed post-contacting plate portion 39, consisting of an upwardly slanted connecting intermediate portion 40 and a downwardly slanted tip portion 41, and which fits beneath extensions 19, 20 and against bottom se ents 43, 44 when the plate 36 is inserted within the slot 1
  • a centrally offset segment 42 near the base of the contact element 36 assists in anchoring the element within the body by making gouging contact with the inner surface of the inset portion of the front wall 16.
  • Water-resistant greases preferably silicone grease, may be placed within the body member if desired, to serve as a further insulating and protective agency.
  • the sliding contact required between contact element and the wire ends and contact port during installation assures displacement of the grease from contact surfaces and results in full electrical contact.
  • the wire ends to be connected are merely inserted through the openings 32, 33 and against the plates 34, 35, and the cover is then forced into the body by means of a suitable pliers of similar compression tool.
  • the cover snaps into position as in the slanted edges of the cover are forced between the slanted sidewalls of the body, and the wires are forced into the slots 37, 38 and against the spring reserve tension of the resilient element 36.
  • the closed connector is then forcefully slid onto the appropriate solder post of the main frame, the post entering within the slot 28 and against the lower surface of the wedges 19-21 and making effective sliding contact with the resilient plate 39.
  • Single-wire connections are similarly made in circuits where two wires are not required.
  • a typical connector made in accordance with the preceding description has overall dimensions, in closed form as applied to the wire ends, of 0.235 X 0.320 X 0.540 inch.
  • the body and cover will typically be injection molded from tough electrically insulating polycarbonate or other plastic material.
  • the element 12 is desirably formed of No. 26 cartridge brass; the wire contact plate 36 is 0.180 X0.238 inch, and the bowed plate member 39 extends 0.300 inch from the plate.
  • a connector made to such dimensions will accept No. 22-24 plastic covered copper wires and will fit a 1132 X 7/32 inch post as used on many main frame assemblies.
  • a connector for making in-line solderless electrical connection in a communications installation between a pair of insulated wires and a main frame flat post comprising: an open top hollow insulating body member having inwardly slanted sidewalls, inwardly transversely slotted to provide a transverse narrow slot near one end for receiving a spring reserve wire contact element, and slotted to provide an open slot at the other end for receiving a said post, said body including projecting ledges extending inwardly along both sidewalls for supporting a post inserted through said end slot; a cover member fitting into the open top of said body member in both open and shut positions, longitudinally channeled to provide a pair of parallel wire-supporting surfaces, and transversely slotted across said wire-supporting surfaces to provide an inner narrow transverse slot in line with the transverse slot in said body member; and a spring reserve contact element disposed within said body member; and a spring reserve contact element disposed within said body member, having a wire-connecting flat plate portion fitting within said transverse slots of
  • Method of connecting insulated wires to a main frame post comprising inserting a wire-end into an open connector as described in claim 1 and closing said connector to make spring reserve contact between said wire-end and said contact element, and slidably mounting said connector on said post.

Landscapes

  • Connector Housings Or Holding Contact Members (AREA)
  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
US867532A 1969-10-20 1969-10-20 Main frame connector and method Expired - Lifetime US3609644A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US86753269A 1969-10-20 1969-10-20

Publications (1)

Publication Number Publication Date
US3609644A true US3609644A (en) 1971-09-28

Family

ID=25349968

Family Applications (1)

Application Number Title Priority Date Filing Date
US867532A Expired - Lifetime US3609644A (en) 1969-10-20 1969-10-20 Main frame connector and method

Country Status (7)

Country Link
US (1) US3609644A (de)
JP (1) JPS5121154B1 (de)
CH (1) CH520413A (de)
DE (1) DE2053142B2 (de)
FR (1) FR2066152A5 (de)
NL (1) NL7014828A (de)
ZA (1) ZA707085B (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748462A (en) * 1972-03-02 1973-07-24 Grote Mfg Co Combination vehicle lamp and junction box
FR2204863A1 (de) * 1972-10-26 1974-05-24 Amp Inc
US3858157A (en) * 1974-02-19 1974-12-31 Minnesota Mining & Mfg Solderless tap connector
US3950063A (en) * 1974-10-21 1976-04-13 Minnesota Mining And Manufacturing Company Connector for looped wire
US4124265A (en) * 1977-11-10 1978-11-07 Minnesota Mining And Manufacturing Company Quick slide connector
US4159158A (en) * 1977-05-06 1979-06-26 Amp Incorporated Displation connector having improved terminal supporting means
US4326767A (en) * 1979-03-12 1982-04-27 Minnesota Mining And Manufacturing Company Wire cutting electrical connector
US4444448A (en) * 1980-01-14 1984-04-24 Minnesota Mining And Manufacturing Company Wire cutting electrical connector
US4954098A (en) * 1989-11-01 1990-09-04 Minnesota Mining And Manufacturing Company Sealed insulation displacement connector
US5041013A (en) * 1987-03-11 1991-08-20 Academy Electrical Corporation Electrical connector
US5080606A (en) * 1990-11-05 1992-01-14 Minnesota Mining And Manufacturing Company Stacked in-line insulation displacement connector
GB2271474A (en) * 1992-09-30 1994-04-13 Weidmueller Electrical connectors

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4183607A (en) * 1978-07-17 1980-01-15 Amp Incorporated Connecting means for fine wires
DE3942276A1 (de) * 1989-12-21 1991-07-04 Telefonbau & Normalzeit Gmbh Kontaktfederbuchse zum steckbaren verbinden von kabeladern und schaltdraehten

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3748462A (en) * 1972-03-02 1973-07-24 Grote Mfg Co Combination vehicle lamp and junction box
FR2204863A1 (de) * 1972-10-26 1974-05-24 Amp Inc
US3858157A (en) * 1974-02-19 1974-12-31 Minnesota Mining & Mfg Solderless tap connector
US3950063A (en) * 1974-10-21 1976-04-13 Minnesota Mining And Manufacturing Company Connector for looped wire
US4159158A (en) * 1977-05-06 1979-06-26 Amp Incorporated Displation connector having improved terminal supporting means
US4124265A (en) * 1977-11-10 1978-11-07 Minnesota Mining And Manufacturing Company Quick slide connector
DE2848933A1 (de) * 1977-11-10 1979-05-17 Minnesota Mining & Mfg Loetloser steckverbinder
FR2408922A1 (fr) * 1977-11-10 1979-06-08 Minnesota Mining & Mfg Connecteur electrique rapide sans soudure
US4326767A (en) * 1979-03-12 1982-04-27 Minnesota Mining And Manufacturing Company Wire cutting electrical connector
US4444448A (en) * 1980-01-14 1984-04-24 Minnesota Mining And Manufacturing Company Wire cutting electrical connector
US5041013A (en) * 1987-03-11 1991-08-20 Academy Electrical Corporation Electrical connector
US4954098A (en) * 1989-11-01 1990-09-04 Minnesota Mining And Manufacturing Company Sealed insulation displacement connector
US5080606A (en) * 1990-11-05 1992-01-14 Minnesota Mining And Manufacturing Company Stacked in-line insulation displacement connector
GB2271474A (en) * 1992-09-30 1994-04-13 Weidmueller Electrical connectors
GB2271474B (en) * 1992-09-30 1995-10-18 Weidmueller Electric connector
US5641302A (en) * 1992-09-30 1997-06-24 Weidmuller (Klippon Products) Limited Electric connector having gripping surfaces for assembling connector to cable

Also Published As

Publication number Publication date
FR2066152A5 (de) 1971-08-06
DE2053142A1 (de) 1971-05-06
DE2053142B2 (de) 1972-05-04
JPS5121154B1 (de) 1976-06-30
NL7014828A (de) 1971-04-22
CH520413A (de) 1972-03-15
ZA707085B (en) 1971-07-28

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