US3761866A - Clip terminal - Google Patents

Clip terminal Download PDF

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Publication number
US3761866A
US3761866A US00186916A US3761866DA US3761866A US 3761866 A US3761866 A US 3761866A US 00186916 A US00186916 A US 00186916A US 3761866D A US3761866D A US 3761866DA US 3761866 A US3761866 A US 3761866A
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US
United States
Prior art keywords
slot
notch
conductor
arms
insulation
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
US00186916A
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English (en)
Inventor
W Sedlacek
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.)
Reliable Electric Co
Original Assignee
Reliable Electric 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 Reliable Electric Co filed Critical Reliable Electric Co
Application granted granted Critical
Publication of US3761866A publication Critical patent/US3761866A/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

Definitions

  • a clip type terminal for engaging an insulated Solid conductor has a body with a notch and a narrower conductor-receiving slot at the base of the notch.
  • the notch and slot divide the body into parallel arms that are cantilevered from a common base.
  • the bottom of the notch has opposed coplanar edge portions that intersect the sides of the slot and the Sides of the notch each at right angles, whereby those edge portions provide cutters that slice insulation from an insulated conductor that is forced from the notch into the slot.
  • the clip terminal of the type with which the present invention is concerned is a flat piece of metal having at least two integrally formed resilient arms which provide one or more conductor-receiving slots.
  • the insulated wire is forced into a slot, which is of a width considerably less than the diameter of the conductor. Inserting the conductor into the slot results in a penetration of the insulation so that electrical contact is obtained between the slot edges and the conductor.
  • the entry to the slot is a V shape which causes the insulated wire to exert a camming action to force the arms apart.
  • Such an arrangement does not always cleanly cut the insulation around the wire.
  • inaccuracies in locating the slot relative to the notch may impair the performance of the terminals as respects the removal of the insulation.
  • An object of this invention is to provide, between the arms of the terminal, a slot entry which has been found to strip away the insulation cleanly from the surface of the conductor and make good electrical contact with the conductor.
  • a slot entry which has been found to strip away the insulation cleanly from the surface of the conductor and make good electrical contact with the conductor.
  • a square notch is cut in the insulation.
  • the resilient arms are forced apart by the camming action of the movement of the conductor so that electrical contact is made with the surface conductor.
  • a further object of the invention is to provide a clip terminal in which the arms have parallel edges that define side portions of a notch that is wider than said slot for receiving the insulated conductor.
  • the base of the notch is defined by straight coplanar edge portions that intersect the side portions of the notch and the side portions of the slot substantially at right angles to each such that those straight edge portions provide spaced, opposed insulation-slicing cutters running at right angles to the longitudinal axis of an insulated wire passing from said slot into said notch.
  • Those straight edges and the edges of the slot define the aforesaid 90 corner edges.
  • knife edges are disposed at right angles to the axis of the insulation for maximum cutting efficiency. This is in contrast to tapered or inclined knife edges.
  • FIG. 1 is an elevation of one type of clip terminal constructed in accordance with the invention
  • FIG. 2 is a fragmentary portion of the upper end of the clip terminal of FIG. 1 on an enlarged scale
  • FIG. 3 is a fragmentary enlargement of a portion of FIG. 2 showing the relationship of an insulated wire to the notch and the slot of the terminal;
  • FIG. 4 is a side elevation, partially broken away, of the insulated wire in the clip terminal.
  • FIG. 5 is a fragmentary section along line 55 of FIG. 4.
  • a clip terminal 2 that comprises a flat body portion 10 of resilient metal having two notches 11, 11 at its upper part and two somewhat longer apertures 12, 12 at its lower part.
  • a straight slot 13 connects a notch with an aperture, thus providing three resilient arms 14, 15 and 16, the center arm 15 being wider than the other two arms 14, 16.
  • the slots 13 are formed by a shearing of slitting operation after which portions adjacent to the apertures 12, 12 are upset or coined at 17. This forces the end arms 14 and 16 away from the middle arm 15 to an extent such that the width of each slot 13 immediately adjacent the portion 17 is about 0.002 inches, and the width of the upper end of each slot is 0.009 to 0.012 inches.
  • the slitting operation makes the edges 20, 21 of the slots 13 sharp and square.
  • each adjacent pair of arms includes the facing edges 20, 21 defining the sides of the conductor-receiving slot 13. This slot 13 is narrower than the conductor to be received therebetween.
  • Each notch 11 is wider than the slot 13 for receiving a wire conductor 26 with insulation 27 thereon.
  • the bottom of each notch 11, namely the part of the notch that is adjacent to the slot 13, has straight edge portions 24, 25 that are of equal length and are coplanar and intersect the slot edges 20, 21 at right angles so as to provide corner edges 40, 41 at the entrance of the slot 13.
  • These straight edge portions 24, 25 provide opposed insulation-slicing cutters running at right angles to the longitudinal axis of the insulated wire 26 passing from the notch 11 into the slot 13.
  • the sides 18, 19 of the notch 11 are preferably parallel and are also at right angles to the straight edge portions 24, 25 at least where they intersect the edge portions 24, 25.
  • the spacing of the sides 18, 19 may be about 0.030 inches.
  • the extreme upper notch edges at 30, 31 may be either parallel or downwardly converging. Lateral extensions 32, 32 on the middle arm 15 cooperate with the rounded top of each of the outer arms 14 and 16 to facilitate entry of an insulated wire where the total wire diameter exceeds the notch width.
  • the lower end of the body portion 10 may include a terminal end 23 to permit a soldered connection or a wire wrapped connection, and a tab 24 for securing the clip to a holder, as by wedging.
  • a plurality of two clip terminals could have a common base portion.
  • the body portion 10 is preferably formed from spring tempered phosphor bronze strip alloy No. A having a thickness of 0.044 inches. After the stamping, slitting and upsetting operations are performed, the clip may be heat treated at 450 F for one hour for stress relief. Then the clip is electroplated with tin or other suitable metals.
  • the edges 40, 41 in cooperation with knife-like edge portions 24,25 cut a square notch in the insulation 27.
  • the arms will yield sufficiently to permit entry'of the metallic conductor wire 26 into the slot 13 since the width of the slot at the corner edges is less than the diameter of the wire 26. The operation is such that the edges 24, 25
  • edges 24, 25 are perpendicular to the axis of the wire 26 rather than being beveled or tapered enhances the efficiency of the insulation cutting.
  • FIGS. 4 and 5 show the wire conductor 26 in the clip terminal.
  • Opposed square notches 46 are cleanly cut in the insulation on opposite sides of the wire. Generally an upwardly dissection 43 of insulation remains. A slight flattening of the wire 26 may also take place where the wire engages the edges 21, 21. In addition the force of inserting the conductor may result in a bending of the wire as shown at 42, particularly where smaller sizes of wires are used.
  • the center arm may also be provided with a locator boss 44 intermediate the notches of the adjacent arms.
  • This boss 44 may be used in conjunction with a tool of the type shown in my copending application Ser. No. 827,013, filed May 22, 1969, now U.S. Pat. No. 3,605,071, for the purpose of inserting an insulated conductor into a notch 11.
  • a clip terminal of the insulation-removing type comprising a flat body that includes two opposed resilient arms that are eacn cantilevered from a common part of the body, said arms having facing edges defining side portions of a conductor-receiving slot that is narrower than the diameter of a conductor to be received thereby, said arms having parallel edges that define side portions of a notch that is wider than said slot for receiving a conductor with insulation thereon, said slot extending from one end of said notch, said one end of said notch being defined by straight edge portions that intersect said side portions of the notch and said side portions of the slot substantially at right angles to each and run for the full distance between said side portions of the notch and said side portions of the slot such that said straight edge portions provide spaced, opposed insulation-slicing cutters running at right angles to the longitudinal axis of an insulated wire that is forced from said notch into said slot.
  • a clip terminal of the insulation-removing type comprising a flat body that includes two opposed resilient arms that are each cantilevered from a common part of the body, said arms having parallel edges defining side portions of a conductor-receiving slot that is narrower than the diameter of a conductor to be received thereby, said arms having parallel edges that define side portions of a notch that is wider than said slot for receiving a conductor with insulation thereon, said slot extending from one end of said notch, the end of said notch being defined by substantially straight edge portions that intersect said side portions of the slot at sharp angles not greater than substantially such that the last-mentioned edge portions provide spaced opposed insulation-splicing cutters running substantially at right angles to the longitudinal axis of an insulated conductor for removing insulation from such insulated conductor passing from said notch and into said slot.
  • a clip terminal according to claim 4 further including mechanically deformed regions on said arms adjacent to said slot and remote from said notch to space the arms a predetermined distance apart at said slot.
  • a clip terminal according to claim 4 including a third resilient arm, the three arms being in the same plane and there being a slot and a notch as aforesaid between the centermost arm and each adjacent arm.

Landscapes

  • Connections By Means Of Piercing Elements, Nuts, Or Screws (AREA)
  • Clamps And Clips (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Removal Of Insulation Or Armoring From Wires Or Cables (AREA)
  • Multi-Conductor Connections (AREA)
US00186916A 1971-10-06 1971-10-06 Clip terminal Expired - Lifetime US3761866A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US18691671A 1971-10-06 1971-10-06

Publications (1)

Publication Number Publication Date
US3761866A true US3761866A (en) 1973-09-25

Family

ID=22686815

Family Applications (1)

Application Number Title Priority Date Filing Date
US00186916A Expired - Lifetime US3761866A (en) 1971-10-06 1971-10-06 Clip terminal

Country Status (12)

Country Link
US (1) US3761866A (pt)
JP (1) JPS5519031B2 (pt)
AU (1) AU464631B2 (pt)
BR (1) BR7206930D0 (pt)
CA (1) CA962745A (pt)
DE (1) DE2248048A1 (pt)
ES (1) ES407328A1 (pt)
FR (1) FR2155613A5 (pt)
GB (1) GB1382743A (pt)
IT (1) IT966210B (pt)
SE (1) SE402384B (pt)
ZA (1) ZA727156B (pt)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4062614A (en) * 1976-07-30 1977-12-13 Bell Telephone Laboratories, Incorporated Insulation piercing slotted beam electrical connector
US4350405A (en) * 1979-05-25 1982-09-21 Societe Anonyme Dite: Mars-Actel Connector for insulated electric conductors
US4421374A (en) * 1980-09-05 1983-12-20 Western Electric Company, Inc. Trifurcated insulation-penetrating terminal
USRE31714E (en) * 1974-09-20 1984-10-30 The Siemon Company Pre-wired terminal connecting block
US4518214A (en) * 1982-04-26 1985-05-21 Marcel Caris Device for the electric connection of a cylindrical conductor
US4527852A (en) * 1983-08-09 1985-07-09 Molex Incorporated Multigauge insulation displacement connector and contacts therefor
USRE32898E (en) * 1983-08-09 1989-04-04 Molex Incorporated Multigauge insulation displacement connector and contacts therefor
US4919622A (en) * 1989-03-30 1990-04-24 Reliance Comm/Tex Corporation Insulation displacing terminal
US4997387A (en) * 1989-06-15 1991-03-05 Siemens Aktiengesellschaft Main distributing strip for incoming and outgoing electrical lines
US6142817A (en) * 1997-03-07 2000-11-07 Marconi Communications Inc. Insulation displacement connector

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5192680U (pt) * 1975-01-22 1976-07-24
JPS5216688A (en) * 1975-07-29 1977-02-08 Tatsuo Teraoka Method of connecting insulator coated electric wires
US4012102A (en) * 1976-05-26 1977-03-15 Minnesota Mining And Manufacturing Company Solderless electrical contact
JPS5310316A (en) * 1976-07-15 1978-01-30 Hitachi Cable Ltd Preparation of wiry addition agent for steel
JPS5319125A (en) * 1976-08-07 1978-02-22 Hitachi Cable Ltd Preparing wire form additive for steel making
JPS5354110A (en) * 1976-10-28 1978-05-17 Hitachi Cable Ltd Production of wire additive for steel
JPS5488589U (pt) * 1977-12-03 1979-06-22
JPS5514652A (en) * 1978-07-19 1980-02-01 Yamaichi Electric Mfg Electric terminal
FR2681477B1 (fr) * 1991-09-12 1995-06-23 Mars Actel Contact autodenudant.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521221A (en) * 1968-02-21 1970-07-21 Northern Electric Co Insulation slicing connector
US3605071A (en) * 1969-05-22 1971-09-14 Reliable Electric Co Two wire clip-type terminal and tool for operating same

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3521221A (en) * 1968-02-21 1970-07-21 Northern Electric Co Insulation slicing connector
US3605071A (en) * 1969-05-22 1971-09-14 Reliable Electric Co Two wire clip-type terminal and tool for operating same

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31714E (en) * 1974-09-20 1984-10-30 The Siemon Company Pre-wired terminal connecting block
US4062614A (en) * 1976-07-30 1977-12-13 Bell Telephone Laboratories, Incorporated Insulation piercing slotted beam electrical connector
US4350405A (en) * 1979-05-25 1982-09-21 Societe Anonyme Dite: Mars-Actel Connector for insulated electric conductors
US4421374A (en) * 1980-09-05 1983-12-20 Western Electric Company, Inc. Trifurcated insulation-penetrating terminal
US4518214A (en) * 1982-04-26 1985-05-21 Marcel Caris Device for the electric connection of a cylindrical conductor
US4527852A (en) * 1983-08-09 1985-07-09 Molex Incorporated Multigauge insulation displacement connector and contacts therefor
USRE32898E (en) * 1983-08-09 1989-04-04 Molex Incorporated Multigauge insulation displacement connector and contacts therefor
US4919622A (en) * 1989-03-30 1990-04-24 Reliance Comm/Tex Corporation Insulation displacing terminal
US4997387A (en) * 1989-06-15 1991-03-05 Siemens Aktiengesellschaft Main distributing strip for incoming and outgoing electrical lines
US6142817A (en) * 1997-03-07 2000-11-07 Marconi Communications Inc. Insulation displacement connector
US6866536B1 (en) 1997-03-07 2005-03-15 Emerson Network Power, Energy Systems, North America, Inc. Insulation displacement connector

Also Published As

Publication number Publication date
ES407328A1 (es) 1975-10-16
BR7206930D0 (pt) 1973-09-13
GB1382743A (en) 1975-02-05
CA962745A (en) 1975-02-11
ZA727156B (en) 1973-06-27
AU4746572A (en) 1974-04-11
SE402384B (sv) 1978-06-26
JPS4844788A (pt) 1973-06-27
FR2155613A5 (pt) 1973-05-18
AU464631B2 (en) 1975-09-04
DE2248048A1 (de) 1973-04-12
IT966210B (it) 1974-02-11
JPS5519031B2 (pt) 1980-05-23

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