EP0147930A1 - Connector polarization method and apparatus - Google Patents

Connector polarization method and apparatus Download PDF

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Publication number
EP0147930A1
EP0147930A1 EP19840307600 EP84307600A EP0147930A1 EP 0147930 A1 EP0147930 A1 EP 0147930A1 EP 19840307600 EP19840307600 EP 19840307600 EP 84307600 A EP84307600 A EP 84307600A EP 0147930 A1 EP0147930 A1 EP 0147930A1
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EP
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Application
Patent type
Prior art keywords
end wall
connector
pin
opening
side walls
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.)
Granted
Application number
EP19840307600
Other languages
German (de)
French (fr)
Other versions
EP0147930B1 (en )
Inventor
Thomas P. Pellegrino
Frank P. Chmela
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.)
Molex LLC
Original Assignee
Molex LLC
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

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Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00-H01R33/00
    • H01R13/64Means for preventing incorrect coupling
    • H01R13/645Means for preventing incorrect coupling by exchangeable elements on case or base
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RLINE CONNECTORS; CURRENT COLLECTORS
    • H01R12/00Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCBs], 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
    • H01R12/70Coupling devices
    • H01R12/71Coupling devices for rigid printing circuits or like structures
    • H01R12/712Coupling devices for rigid printing circuits or like structures co-operating with the surface of the printed circuit or with a coupling device exclusively provided on the surface of the printed circuit
    • H01R12/716Coupling device provided on the PCB

Abstract

A female pin conductor receiving connector (10) includes a terminal housing (21) having an exterior end wall (22), a pair of opposing, parallel, exterior side walls (24, 26) extending from opposite edges of the end wall and a plurality of terminal receiving cavities (30) formed between the side walls and the end wall, each cavity having a pin receiving opening (32) formed in the end wall and a plurality of terminals (36) (see Figure 2) mounted in some or all of the cavities. In order to polarize the connector (10) a portion (44) of the housing (21) adjacent a pin receiving opening (32) is permanently deformed by a punch (48) to prevent a pin conductor (20a or 20b) (see Figure 1) being received through the opening.

Description

  • The present invention generally relates to a female pin conductor receiving connector and, in particular, to a method and apparatus for polarizing such a connector.
  • Pin conductors have long been used as a means of providing a male terminal which is mateable with a female connector. Most commonly the pin conductors are arranged in a single row or double rows with the conductors staked into a printed circuit board, mounted on a wafer or mounted on a header.
  • The female connector generally includes a housing having an exterior end wall, a pair of opposing parallel exterior side walls extending from opposite edges of the end wall and a plurality of terminal receiving cavities formed between said side walls and the end wall. Each cavity has a pin receiving opening formed in the end wall. A plurality of terminals are mounted in some Or all of the cavities. Each terminal has a portion that is mateable with a pin conductor when the pin conductor is received through the corresponding opening.
  • It is often desirable to polarize the female connector so that it will only fit on a certain array of pin conductors. This is normally done by blocking the pin receiving opening of the female connector so that said blocked opening corresponds with a missing pin conductor in a straight line array of conductors. In this manner, only the female connector having the blocked opening in the same position as the missing conductor will fit on that particular array of pin conductors.
  • In the past, the pin receiving opening would be blocked by one of two methods. The first method is to mould the opening shut when the housing is initially manufactured. The other method is to manufacture a small plug which is inserted into a pin receiving opening after manufacture of the connector housing. Both of these methods have proved to be extremely inefficient and relatively expensive. The first method is undesirable because it requires a mould tool change for each particular female connector housing. The second method overcomes the first method's drawbacks, however, at the cost of producing an additional part.
  • It is, therefore, the principal object of the present invention to provide a new and improved method and apparatus for polarizing a female pin conductor receiving connecton.
  • The female connector includes a housing having an exterior end wall, a pair of opposing parallel exterior side walls extending from opposite edges of the end wall, and a plurality of terminal receiving cavities formed between said side walls and the end wall, each cavity having a pin receiving opening formed in the end wall. A plurality of terminals are mounted in some or all of said cavities, each terminal having a portion that is mateable with a pin conductor when it is received through the corresponding opening.
  • The polarizing method comprises the steps of deforming a portion of the housing adjacent a pin receiving opening to define a deformed section whereby the end wall opening is substantially closed by the deformed section to prevent a pin conductor from being received therethrough.
  • The apparatus for performing said method comprises means for holding said connector in a given disposition and punch means having an end engageable with a portion of the housing adjacent a pin receiving opening for deforming and moving said portion whereby the pin receiving opening is substantially closed to prevent a pin conductor from being received therethrough.
  • Some ways of carrying out the invention embodying both its method and apparatus aspects is described in detail below by way of example, and not by way of limitation and with reference to drawings in which:
    • FIG. 1 is a perspective view of a female pin conductor receiving connector modified in accordance with a method and apparatus of the present invention, and two wafers;
    • FIG. 2 is a side sectional view of a terminal receiving cavity of the female connector shown in Fig. 1;
    • FIGS. 3, 4 and 5 are sequential sectional views of a female pin conductor receiving connector mounted in the apparatus of the present invention and defining the method of the present invention; and
    • FIG. 6 shows a modification.
  • Turning now to the drawings, Fig. 1 shows a female pin conductor receiving connector, generally designated 10. Connector 10 is adapted to electrically connect a plurality of wires 12 with one of a plurality of wafers, generally designated 14a and 14b.
  • Each wafer comprises an insulative base 16 which is mountable on a printed circuit board 18 and has a group of pin conductors 20a and 20b mounted in and extending from the base 16 in a straight line.
  • It is to be noted that pin connectors other than wafers can be used in association with connector 10.
  • The female connector 1C has a housing 21 which includes an exterior end wall 22 and two parallel spaced apart exterior side walls 24 and 26 extending from the edges of the end wall 22. A plurality of barrier walls 28 extend between the side walls 24 and 26 to define with the end wall 22 a plurality of terminal receiving cavities 30. Each cavity 30 has a pin receiving opening 32 formed in the end wall 22 as a means of allowing a pin conductor 20 to be received within a particular cavity 30.
  • Each of the cavities is capable of mounting a terminal, generally designated 36 (Fig. 2), therein. Each terminal has a wire connecting portion 38 at one end and a pin mateable portion 40 formed at the other end. Looking at Fig. 2, the wire connecting portion 38 is seen to be an insulation displacement section that is well known in the art and the pin mateable portion 40 is seen to be a loop-shaped, double cantilevered configuration also well known in the art. It is understood that there are other wire connecting portions 38 and pin mateable portions 40 known in the art that would serve the same purposes as set forth herein.
  • Looking at Fig. 1, both wafers 14a and 14b have three pin conductors 20a and 20b respectively. Also, each wafer 14a and 14b has a blank position 42a and 42b, respectively, wherein a pin conductor could have been mounted but was not. Positions 42a and 42b are purposely left blank as a means of polarizing or keying a particular female connector 10 with a particular wafer 14a or 14b.
  • In order to ensure that the correct female connector 10 is mounted on the correct wafer 14a or 14b, the pin receiving opening 32 corresponding with the blank position 42 is closed to prevent a pin conductor 20 from being received therethrough. In the past, this has been accomplished by either moulding the opening shut or inserting a small plug by hand within the opening. These two methods are expensive and inefficient.
  • In the present example, a portion of the housing 21 adjacent a desired opening 32 is modified to produce a deformed section 44. The deformed section 44 is a portion of side wall 24 which is pushed toward the opposite side wall 26 so that it at least partially blocks terminal receiving cavity 30. In this configuration, a pin conductor 20 cannot be received through opening 32. Thus, looking at Fig. 1, female connector 10 will only be mateable with wafer 14a and not wafer 14b.
  • In order tc produce a deformed section 44 as described above, the connector 10 is held in a suitable connector nest 46 as shown in Fig. 3. The nest 46 can be of a type that is disclosed in European Patent Application Serial No. 83305544.5 publication No. 0104874. However, any connector holding means which presents side wall 24 outwardly is acceptable.
  • After connector 10 is held in nest 46, a punch 48 is provided having an end 50 which is engageable with the housing 21 to produce the deformed section 44. The end 50 of punch 48 has a slanted surface formed thereat having a leading edge-in the plane of the inside of end wall 22.
  • In Fig. 4, the punch 48 has been actuated by suitable means so that the end 50 engages side wall 24 slanting a portion thereof inwardly toward side wall 26 producing deformed section 44. In Fig. 5, punch 48 has been retracted leaving the side wall permanently deformed and blocking the adjacent opening 32.
  • The punch 48 operates with a cutting action to sever the deformed section 44 from the side wall 24 along the lower edge of the section 44 and at least partially up its vertical sides so that the section 44 is permanently curled or rolled over into the cavity 30. The housing 21 material is chosen from suitable plastically deformable materials having no substantial shape-memory so as to permit the section 44 to be severed and permanently displaced into the cavity 30 in the manner described. Suitable materials are polyester or filled or unfilled nylon.
  • Instead of forming the section 44, the punch 48' may alternatively be provided with a rounded nose 50' (see Fig. 6) to form a permanently, inwardly extending depression or "bubble" 44' in the side wall 24 to block the adjacent opening 32.

Claims (7)

1. A method of polarizing a female pin conductor receiving connector, said connector including a housing (21) having an exterior end wall (22), a pair of opposing parallel exterior side walls (24, 26) extending from opposite edges of the end wall, and a plurality of terminal receiving cavities (30) formed between said side walls and the end wall, each cavity having a pin receiving opening (32) formed in the end wall, and a plurality of terminals (36) mounted in some or all of said cavities, each terminal having a portion (40) that is mateable with a pin conductor when it is received through the corresponding opening (32), said polarizing method characterised by the steps of deforming a portion of the housing (21) adjacent a pin receiving opening (32) to define a deformed section (44 or 44') whereby the end wall opening (32) is substantially closed by the deformed section to prevent a pin conductor (20a, 20b) from being received therethrough.
2. The method of claim 1 wherein the deforming step includes moving one of the side walls (26) of a cavity generally at its juncture with the end wall (22) toward the other side wall (24) thereby defining said deformed section (44 or 44').
3. The method of claim 2 wherein said moving step includes transversely punching the side wall (26).
4. An apparatus for polarizing a female pin conductor receiving connector by a method as claimed. in claim 1, 2 or 3 comprising means (46) for holding said connector in a given disposition with one of its side walls (26) presented outwardly, and punch means (48 or 48') having an end (50 or 50') engageable with a section of one of the side walls (26) generally at its juncture with the end wall (22) for deforming and permanently moving said section (44 or 44') toward the other side wall (24) whereby the end wall opening (32) is substantially closed by the deformed section (44 or 44') to prevent a pin conductor from being received therethrough.
5. The apparatus of claim 4 wherein said punch means (48) is movable between a first position away from said connector to a second position so that said end (50 or 50') engages and then travels past said side wall (26) in order to form said section (44 or 44').
6. The apparatus of claim 5 wherein said connector is held in said holding means so that the engaged side wall (26) is transverse to the movement of the punch means (48 or 48').
7. The apparatus of claim 4 wherein the end (50) of the punch means (48) has a slanted surface with respect to the engaged side wall (26).
EP19840307600 1983-11-28 1984-11-02 Connector polarization method and apparatus Expired EP0147930B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US55585283 true 1983-11-28 1983-11-28
US555852 1983-11-28

Publications (2)

Publication Number Publication Date
EP0147930A1 true true EP0147930A1 (en) 1985-07-10
EP0147930B1 EP0147930B1 (en) 1987-03-18

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840307600 Expired EP0147930B1 (en) 1983-11-28 1984-11-02 Connector polarization method and apparatus

Country Status (4)

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EP (1) EP0147930B1 (en)
JP (2) JPS60124375A (en)
CA (1) CA1231831A (en)
DE (1) DE3462733D1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443311A1 (en) * 1990-01-23 1991-08-28 MAN Roland Druckmaschinen AG Cable connector for the multipole connection of cables to a board equipped with electrical components
GB2254199A (en) * 1991-03-06 1992-09-30 Fukuda Denshi Kk Electrical connectors
US5643773A (en) * 1987-11-17 1997-07-01 Brown University Research Foundation Preparation of elongated seamless capsules containing a coaxial rod and biological material
EP2093845A1 (en) * 2008-02-22 2009-08-26 Sick Ag Modular safety control

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989338A (en) * 1974-11-08 1976-11-02 Gosser Robert B Push-pin assembly method and construction
EP0104874A2 (en) 1982-09-24 1984-04-04 Molex Incorporated Electrical harness fabrication method and apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3989338A (en) * 1974-11-08 1976-11-02 Gosser Robert B Push-pin assembly method and construction
EP0104874A2 (en) 1982-09-24 1984-04-04 Molex Incorporated Electrical harness fabrication method and apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5643773A (en) * 1987-11-17 1997-07-01 Brown University Research Foundation Preparation of elongated seamless capsules containing a coaxial rod and biological material
EP0443311A1 (en) * 1990-01-23 1991-08-28 MAN Roland Druckmaschinen AG Cable connector for the multipole connection of cables to a board equipped with electrical components
US5125856A (en) * 1990-01-23 1992-06-30 Man Roland Druckmaschinen Ag Cable to printed circuit board keyed connector system
GB2254199A (en) * 1991-03-06 1992-09-30 Fukuda Denshi Kk Electrical connectors
EP2093845A1 (en) * 2008-02-22 2009-08-26 Sick Ag Modular safety control

Also Published As

Publication number Publication date Type
JPS60124375A (en) 1985-07-03 application
CA1231831A (en) 1988-01-26 grant
DE3462733D1 (en) 1987-04-23 grant
CA1231831A1 (en) grant
JPH02145784U (en) 1990-12-11 application
JPH0548381Y2 (en) 1993-12-24 grant
EP0147930B1 (en) 1987-03-18 grant

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