EP0398342A1 - A crimp terminal and its wire crimping structure - Google Patents

A crimp terminal and its wire crimping structure Download PDF

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Publication number
EP0398342A1
EP0398342A1 EP90109379A EP90109379A EP0398342A1 EP 0398342 A1 EP0398342 A1 EP 0398342A1 EP 90109379 A EP90109379 A EP 90109379A EP 90109379 A EP90109379 A EP 90109379A EP 0398342 A1 EP0398342 A1 EP 0398342A1
Authority
EP
European Patent Office
Prior art keywords
crimped
wire
copper conductor
terminal
conductor
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.)
Withdrawn
Application number
EP90109379A
Other languages
German (de)
English (en)
French (fr)
Inventor
Kinya Horibe
Hirohiko Fujimaki
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.)
Yazaki Corp
Original Assignee
Yazaki Corp
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 Yazaki Corp filed Critical Yazaki Corp
Publication of EP0398342A1 publication Critical patent/EP0398342A1/en
Withdrawn legal-status Critical Current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
    • H01R4/10—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation
    • H01R4/18—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping
    • H01R4/183—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section
    • H01R4/184—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion
    • H01R4/185—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 effected solely by twisting, wrapping, bending, crimping, or other permanent deformation by crimping for cylindrical elongated bodies, e.g. cables having circular cross-section comprising a U-shaped wire-receiving portion combined with a U-shaped insulation-receiving portion

Definitions

  • the present invention relates to a crimp terminal which provides secure connection, both mechanical and electrical, between it and a conductor.
  • Figure 6A and 6B show a conventional crimp or solderless terminal.
  • Reference numeral 1 designates a crimp terminal; 2 indicates a tongue, a connecting portion of the terminal that is connected to a mating terminal; 3 a grip portion that holds the wire insula­tion; and 4 another grip portion that firmly holds the bare portion of a copper conductor.
  • Denoted 5 is an insulated wire and 6 is a copper conductor. The end portion of the wire 5 is stripped of insulation to expose the bare copper conductor 6 , and then the wire end is inserted into the grip portions 3 , 4 of the terminal that are crimped against the bare conductor and insulation.
  • This invention has been accomplished to overcome the above drawback, and its objective is to provide a crimp terminal whose electrical and mechanical characteristics are improved and also provide a crimping structure for securely connecting the crimp terminal and the copper conductor.
  • the crimp terminal and its wire crimping structure comprises: a crimp terminal having at one end thereof a first grip portion for holding a wire insula­tion and a second grip portion for holding a bare copper conductor, said second grip portion being divided in two sections and crimped against the bare conductor in such a manner that the copper conductor deformation ratio at one of said two sections is different from the other, said copper conductor deformation ratio being obtained by first calculating a difference between copper conductor cross sections before and after crimping and then dividing said difference by said copper conductor cross section before the crimping, said two sections being crimped against the bare conductor in such a manner that at one of said two sections the copper conductor deforma­tion ratio is more than 40% and that at the other section said copper deformation ratio is 10 to 30%.
  • Figure 1A and 1B show the crimp terminal according to this invention that is connected with a wire.
  • the crimp terminal 1 is formed by punching and bending a metal sheet.
  • Denoted 2 is a tongue formed at one end of the terminal that is to be connected with a mating terminal.
  • the other end of the terminal is formed with a grip portion 3 that grips the wire insulation and with two other grip portions 4a , 4b that grip a bare copper conductor 6 .
  • These gripping portions are formed by first punching from a metal sheet strips that extend from both sides of the terminal 1 and bending these strips in circle from both sides toward the center.
  • Designated 5 and 6 are an insulation-covered wire and a copper conductor, respectively.
  • the copper conductor deformation factor is defined as follows.
  • the residual resistance ratio (R.R.R) is defined as R 293K /R 4.2K , where R 293K is the electrical resistance of the crimped portion at 20°C and R 4.2K is the resistance of the crimped portion when placed in liquid helium.
  • R 293K is the electrical resistance of the crimped portion at 20°C
  • R 4.2K is the resistance of the crimped portion when placed in liquid helium.
  • This invention has been achieved by utilizing the fact that there is a definite relationship between the copper conductor deformation ratio and the residual resistance ratio.
  • Figures 2 to 4 show the characteristics of the crimped portion of the terminal connected with copper conductors, which are 3, 0.5 and 1.25 mm2 in cross section and are made up of 41, 7 and 16 core wires, respectively, each wire being 0.32 mm in diameter.
  • curves (1) indicate the residual resis­tance ratio and curves (2) the bonding force.
  • the residual resistance ratio increases as the copper conductor deformation ratio increases, as indicat­ed by the curves (1), and the electrical characteristic is improved.
  • the residual resistance ratio becomes sufficiently high for the copper conductor deformation ratio of 40% and its rate of increase reduces from that point forward. From this it is seen that when the copper conductor deformation ratio is set higher than 40%, the crimped portion will have a good and stable electrical characteristic.
  • Figure 5 is a graph showing the relationship between the wire size and the average bonding force required for the wire.
  • the bonding forces in the above range in Figures 2 to 4 satisfy the required value.
  • this invention divides the bare conductor grip portion into two parts 4a , 4b , so that when they are crimped their heights or the copper conductor deformation ratios differ from each other. This is illustrated in Figure 1.
  • the grip portion 4b is crimped with a less force than that applied to the grip portion 4a so that the copper conductor deformation ratio for the portion 4b will be 10 to 30%.
  • the bonding force of the grip portion 4b is maintained at high level, i.e., the mechanical strength of the crimped portion is high.
  • the crimp terminal of this invention has its conductor gripping portion divided in two.
  • One of the divided grip portions provides a strong mechanical connection and the other portion ensures a good electrical contact.

Landscapes

  • Connections Effected By Soldering, Adhesion, Or Permanent Deformation (AREA)
EP90109379A 1989-05-19 1990-05-17 A crimp terminal and its wire crimping structure Withdrawn EP0398342A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5701989U JPH02148564U (pt) 1989-05-19 1989-05-19
JP57019/89U 1989-05-19

Publications (1)

Publication Number Publication Date
EP0398342A1 true EP0398342A1 (en) 1990-11-22

Family

ID=13043724

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90109379A Withdrawn EP0398342A1 (en) 1989-05-19 1990-05-17 A crimp terminal and its wire crimping structure

Country Status (2)

Country Link
EP (1) EP0398342A1 (pt)
JP (1) JPH02148564U (pt)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0873042A4 (pt) * 1995-05-29 1998-10-21
DE102006045567A1 (de) * 2006-09-25 2008-04-24 Tyco Electronics Amp Gmbh Crimpstabilisierung
EP1993171A1 (de) 2007-05-16 2008-11-19 Delphi Technologies, Inc. Kabelschuh

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4809591B2 (ja) * 2003-11-20 2011-11-09 古河電気工業株式会社 アルミ電線への端子圧着構造及び端子圧着方法並びに端子付アルミ電線の製造方法
JP2010097781A (ja) * 2008-10-15 2010-04-30 Autonetworks Technologies Ltd 端子金具付き電線の製造方法及び端子圧着装置
JP5723087B2 (ja) * 2009-08-10 2015-05-27 矢崎総業株式会社 端子圧着方法及び端子圧着装置
JP6007198B2 (ja) * 2014-01-15 2016-10-12 古河電気工業株式会社 銅電線とアルミニウム電線との接続構造および接続方法
JP5714749B2 (ja) * 2014-05-15 2015-05-07 矢崎総業株式会社 端子圧着方法及び端子圧着装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1790118B2 (de) * 1967-09-13 1977-09-22 AMP Inc., Harrisburg, Pa. (V.St A.) An einen aluminiumdrahtleiter angeschlagener anschlussteil
DE2554310B2 (de) * 1974-12-03 1979-09-20 Thomas & Betts Corp., Raritan, N.J. (V.St.A.) Elektrische Verbindung zwischen einem Verbinder und einem Leiter und Aufquetschvorrichtung zum Herstellen dieser Verbindung

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59165390A (ja) * 1983-03-10 1984-09-18 東洋端子株式会社 圧着端子の圧着法およびその端子

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1790118B2 (de) * 1967-09-13 1977-09-22 AMP Inc., Harrisburg, Pa. (V.St A.) An einen aluminiumdrahtleiter angeschlagener anschlussteil
DE2554310B2 (de) * 1974-12-03 1979-09-20 Thomas & Betts Corp., Raritan, N.J. (V.St.A.) Elektrische Verbindung zwischen einem Verbinder und einem Leiter und Aufquetschvorrichtung zum Herstellen dieser Verbindung

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN *
UND- ODER NOR + STEUERUNGSTECHNIK *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0873042A4 (pt) * 1995-05-29 1998-10-21
EP0873042A1 (en) * 1995-05-29 1998-10-21 R-Amtech International, Inc. Elongated flexible electrical heater and a method of manufacturing it
DE102006045567A1 (de) * 2006-09-25 2008-04-24 Tyco Electronics Amp Gmbh Crimpstabilisierung
DE102006045567A8 (de) * 2006-09-25 2008-09-11 Tyco Electronics Amp Gmbh Crimpstabilisierung
EP1993171A1 (de) 2007-05-16 2008-11-19 Delphi Technologies, Inc. Kabelschuh

Also Published As

Publication number Publication date
JPH02148564U (pt) 1990-12-18

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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Designated state(s): DE GB

17P Request for examination filed

Effective date: 19910319

17Q First examination report despatched

Effective date: 19931027

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18D Application deemed to be withdrawn

Effective date: 19940308