EP0299487B1 - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
EP0299487B1
EP0299487B1 EP88111344A EP88111344A EP0299487B1 EP 0299487 B1 EP0299487 B1 EP 0299487B1 EP 88111344 A EP88111344 A EP 88111344A EP 88111344 A EP88111344 A EP 88111344A EP 0299487 B1 EP0299487 B1 EP 0299487B1
Authority
EP
European Patent Office
Prior art keywords
terminals
rows
tail portions
disposed
portions
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
EP88111344A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0299487A2 (en
EP0299487A3 (en
Inventor
Naoto C/O Minn. Min. And Manuf. Co. Sagawara
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
Publication of EP0299487A2 publication Critical patent/EP0299487A2/en
Publication of EP0299487A3 publication Critical patent/EP0299487A3/en
Application granted granted Critical
Publication of EP0299487B1 publication Critical patent/EP0299487B1/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
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/77—Coupling devices for flexible printed circuits, flat or ribbon cables or like structures
    • H01R12/771—Details
    • H01R12/775—Ground or shield arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]

Definitions

  • the present invention relates to an electrical connector, and, more particularly, to an electrical connector having two rows of connecting terminals or contactors, one end of each terminal having a bent and protruding tail portion which is disposed in such a manner that the tail portions as a whole are aligned in a row and at which the electrical connector is connected to a flat cable, in particular, to a flat cable for transmitting high speed pulse signals or those each having a short pulse width between computer mainframes or between a computer mainframe and any of its peripherals.
  • Figure 5 of the drawing shows a female connector 1 of the type described above which is used for high speed signal transmitting flat cable.
  • the connector 1 has two rows of connecting terminals or contactors 2a, 2b, 2c, 2d, 3a, 3b, 3c, and 3d. Terminals for signal lines 3a, 2b, 3c, and 2d and the terminals for ground lines 2a, 3b, 2c, and 3d among the two rows of terminals 2a, 2b, 2c, 2d, 3a, 3b, 3c, and 3d are located alternately or in a zigzag or checkerboard pattern when viewed from a side of the connector 1 to which pins are to be inserted. One end of each of the terminals of connector 1 is connected to a flat cable 4. In Figure 5, a reference symbol S indicates a signal line terminal, while G designates a ground line terminal.
  • each terminal row is described as having four terminals only for ease and clarification of the explanation. However, it may include five or more, or three or less, terminals.
  • connecting terminals 101a, 101b, 101c, 101d, 102a, 102b, 102c, and 102d which respectively correspond to the connecting terminals 2a, 2b, 2c, 2d; 3a, 3b, 3c, and 3d of the connector 1 shown in Figure 5, are each formed of a bent metal sheet 103 having the same shape.
  • the two rows of terminals are disposed in such a manner that those in one row correspond to those in the other row when they are turned by 180 degrees.
  • tail portions 106a, 107a, 106b, 107b, 106c, 107c, 106d, and 107d bendingly protrude from the sides of the respective terminals 102a, ..., 102d, 103a, ..., 103d at which the terminals are adapted to be connected to an external cable, in such a manner that they are aligned in a row.
  • These tail portions are therefore aligned in the order of G, S, S, G, G, S, S, and G, as shown in Figure 6.
  • the tail portions of the terminals are aligned in the manner shown in Figure 6, the tail portions for the signal lines are brought adjacent to each other, as in the case of the tail portions 107a and 106b or the tail portions 107c and 106d, increasing the possibility of occurrence of the crosstalk of signals to be transmitted through the adjacent respective tail portions.
  • the present invention is designed to obviate the above-described problem of crosstalk, and an object thereof is to provide an electrical connector which is so improved as to reduce the possibility of occurrence of crosstalk between the tail portions at which the terminals are connected to an external cable.
  • an electrical connector having two rows of connecting terminals, each of said connecting terminals having a tail portion which protrudes from one end thereof in such a manner that the tail portions of adjacent terminals in opposite rows are bent and as a whole are aligned in a row, the connector is adapted to be electrically connected to a cable by means of the tail portions.
  • the tail portions are disposed at positions symmetrical with each other about a plane (A) which is perpendicular to the direction in which the row of tail portions extend and which passes between two of the connecting terminals adjacent to each other in the extending direction (X) of a row.
  • the tail portions are disposed at positions mirror symmetrical with each other around a plane (A) which is perpendicular to an extending direction (x) of the row of tail portions and which passes through a midpoint between the connecting terminals adjacent to each other in the extending direction of the rows, the signal line tail portions in the bent and protruding tail portions aligned in a row are always positioned between the ground line tail portions, even if the two rows of connecting terminals are disposed in such a manner that the signal line terminals and the ground line terminals form a checkerboard pattern when viewed from the side of contact of each connecting terminals (the side opposite to that at which the tail portions are provided), and therefore the possibility of occurrence of crosstalk between the signal line tail portions can be reduced.
  • a female electrical connector 10 according to the preferred embodiment of the present invention will be described with reference to Figures 1 to 4 (this connector looking just like the one shown in Figure 5, when viewed from the side for receiving pins).
  • a housing 11 of the electrical connector 10 is made of an electrically insulating plastic, and has substantially square column shaped through-holes 13 extending from one end surface 12 thereof to the other end surface (not shown).
  • the through-holes 13 are the same in size and aligned in two rows at the equal spacings. More specifically, the two through-holes 13 in each pair of through-holes adjoin to each other in the direction perpendicular to the extending direction X of the through-hole rows.
  • Each of a pair of through-holes 13a which are disposed alternately in the direction X of extension of each row, houses a first bent metal sheet 14, while the remaining through-holes 13b each accommodate a second bent metal sheet 15.
  • the first bent metal sheet 14 which is schematically shown in Figures 1 and 2 is a metal sheet pinched into a shape shown in Figure 3 and bent at broken lines 14a and 14b at right angles so that three side surfaces 14g, 14h and 14j out of four side surfaces which form a square tube constitute a female contact pressingly inserted into the corresponding through-hole 13a.
  • a projection 14c which extends from the outer side of the end of the side surface 14g is bent at broken lines 14d and 14e at right angles.
  • the projection 14c has a distal end or a tail portion 14f at which the connecting terminal is adapted to be electrically connected to a wire of a flat cable by soldering.
  • a second bent metal sheet 15 which is schematically shown in Figures 1 and 2 is a metal sheet punched into a shape shown in Figure 4 and bent at broken lines 15a and 15b at right angles so that three side surfaces 15g, 15h and 15j out of four side surfaces which form a square tube constitute a female contact pressingly inserted into the corresponding through-hole 13b.
  • a projection 15c which extends from the inner side of one end of the side surface 15g is bent at broken lines 15d and 15e at right angles.
  • the projection 15c has a distal end or a tail portion 15f at which the connecting terminal is adapted to be electrically connected to a wire of a flat cable by soldering.
  • each bent metal sheet 14 projects from the outer side of the one end of the side surface 14g
  • the projection 15c of each bent metal sheet 15 extends from the inner side of the one end of the side surface 15g, ie., from the vicinity of the broken line 15a. Therefore, the tail portions of the bent metal sheets are positioned mirror symmetrical with each other around or about a virtual mirror plane A which is perpendicular to the X direction and passes through a midpoint between the terminals adjacent to each other in the direction X.
  • the tail portion 15f of each bent metal sheet 15 inserted into the through-hole 13b adjoins the tail portion 14f of the adjacent bent metal sheet 14 inserted into the through-hole 13a in the same row.
  • Connecting tail portions 19a, 19b, 19c, 19d; 20a, 20b, 20c, 20d of two rows of connecting terminals 17a, 17b, 17c, 17d; 18a, 18b, 18c, 18d of the connector 10 are aligned in a row.
  • the tail portions 20a, 19b, 20c, and 19d for connecting signal lines do not adjoin to each other but are disposed between the corresponding tail portions 19a, 20b, 19c, and 20d for connecting ground lines.
  • the tail portions are disposed as a whole in the order of G, S, G, S, ... with G and S disposed alternately and at the same spacing. In consequence, the possibility of crosstalks of signals which occur at the tail portions is reduced.
  • tail portions which are connected to a flat cable or the like may be buried in a resin.
  • the connector of this invention may be connected to a coaxial ribbon cable instead of the flat cable.
  • the bent body which forms a terminal may have any shape instead of that shown in Figures 1 to 4, so long as its tail portion is placed at a location shown in the figure and that it has three or four side surfaces which constitute a contact.
  • the bent body may have the same expanded form.
  • the tail portions may be disposed at locations which are away from the ends of the through-holes in the X direction toward the intermediate portion thereof. If the size of the through-holes for the signal lines is different or it is different from that of the through-holes for the ground lines, the tail portions may be disposed in any way so long as the alternate arrangement of the S and G is ensured.
  • the terminal of this connector may be male in place of female.

Landscapes

  • Details Of Connecting Devices For Male And Female Coupling (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Multi-Conductor Connections (AREA)
EP88111344A 1987-07-15 1988-07-14 Electrical connector Expired - Lifetime EP0299487B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62176929A JPS6431361A (en) 1987-07-15 1987-07-15 Electric connection connector
JP176929/87 1987-07-15

Publications (3)

Publication Number Publication Date
EP0299487A2 EP0299487A2 (en) 1989-01-18
EP0299487A3 EP0299487A3 (en) 1990-05-30
EP0299487B1 true EP0299487B1 (en) 1994-05-18

Family

ID=16022215

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88111344A Expired - Lifetime EP0299487B1 (en) 1987-07-15 1988-07-14 Electrical connector

Country Status (6)

Country Link
EP (1) EP0299487B1 (ja)
JP (1) JPS6431361A (ja)
KR (1) KR970003367B1 (ja)
CA (1) CA1297962C (ja)
DE (1) DE3889593T2 (ja)
HK (1) HK1007036A1 (ja)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0810932Y2 (ja) * 1990-08-29 1996-03-29 ミネソタ マイニング アンド マニュファクチュアリング カンパニー 高速信号伝送ケーブル用コネクタ
JP2673632B2 (ja) * 1992-05-13 1997-11-05 オークマ株式会社 並列２主軸旋盤
GB2282712B (en) * 1993-08-31 1997-09-10 At & T Corp Electrical connectors for minimizing cross-talk
US5562479A (en) * 1993-08-31 1996-10-08 At&T Corp. Connector for unshielded twisted wire pair cables
JPH097651A (ja) * 1995-06-09 1997-01-10 Minnesota Mining & Mfg Co <3M> 接触子及びこの接触子を備えた端末コネクタ
AUPO635197A0 (en) * 1997-04-22 1997-05-15 Minitronics Pty. Limited Cable system
KR100433090B1 (ko) * 2001-07-06 2004-05-27 이교섭 곡물 탈곡기의 곡물 유도대 설치구조

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4406512A (en) * 1981-07-24 1983-09-27 E. I. Du Pont De Nemours And Company Triple row coax cable connector
US4451099A (en) * 1982-05-07 1984-05-29 Amp Incorporated Electrical connector having commoning member
EP0211496B1 (en) * 1985-07-12 1993-01-13 The Whitaker Corporation Double row electrical connector

Also Published As

Publication number Publication date
EP0299487A2 (en) 1989-01-18
DE3889593T2 (de) 1994-11-17
HK1007036A1 (en) 1999-03-26
KR970003367B1 (ko) 1997-03-17
JPS6431361A (en) 1989-02-01
CA1297962C (en) 1992-03-24
DE3889593D1 (de) 1994-06-23
EP0299487A3 (en) 1990-05-30
KR890003063A (ko) 1989-04-12

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