GB2292264A - Electrical connector - Google Patents

Electrical connector Download PDF

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Publication number
GB2292264A
GB2292264A GB9416383A GB9416383A GB2292264A GB 2292264 A GB2292264 A GB 2292264A GB 9416383 A GB9416383 A GB 9416383A GB 9416383 A GB9416383 A GB 9416383A GB 2292264 A GB2292264 A GB 2292264A
Authority
GB
United Kingdom
Prior art keywords
plug
socket
electrical
connector
contact
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Withdrawn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
GB9416383A
Other versions
GB9416383D0 (en
Inventor
Stuart Elliott Marshall
John E Veal
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.)
IBM United Kingdom Ltd
Original Assignee
IBM United Kingdom Ltd
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 IBM United Kingdom Ltd filed Critical IBM United Kingdom Ltd
Priority to GB9416383A priority Critical patent/GB2292264A/en
Publication of GB9416383D0 publication Critical patent/GB9416383D0/en
Publication of GB2292264A publication Critical patent/GB2292264A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • H01R13/22Contacts for co-operating by abutting
    • H01R13/24Contacts for co-operating by abutting resilient; resiliently-mounted
    • H01R13/2442Contacts for co-operating by abutting resilient; resiliently-mounted with a single cantilevered beam
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; 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
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; 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
    • H01R12/714Coupling 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 with contacts abutting directly the printed circuit; Button contacts therefore provided on the printed circuit
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01RELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02Contact members
    • H01R13/26Pin or blade contacts for sliding co-operation on one side only

Abstract

An electrical plug and socket 10 connector allows a plug to be inserted from more than one opening, but only from one opening at any one time. The plug is inserted to an operative position providing good electrical contact. The inserted plug occupies the socket so as to prevent another plug being inserted to an operative position. <IMAGE>

Description

ELECTRICAL CONNECTOR The present invention relates to an electrical connector. More particularly the present invention relates to a bidirectional connector.
Connectors of the plug and socket type are common in the electrical and electronics industry. Some electrical sockets have a shutter which is released on insertion of plug connection pins and which also serve to hold the plug in the socket.
Known connectors only provide for connection from one side of a connector socket. For example US-A-4,002,399 discloses a printed circuit jack which is mountable directly on a printed circuit board in which the contacts are all inserted from one side of the housing and have connection lugs extending through the opposite side of the housing. The electrical contacts are formed from spring metal material with tabs which rest on special plateau areas formed in the housing.
Such one sided connectors are not particularly versatile in applications where space is restricted and connection from more than one orientation may be required. It is desired to provide a connector which provides connection from more than one direction.
Accordingly, viewed from one aspect the present invention provides a connector for connecting a first electrical device to a second electrical device, comprising: a plug having an electrical contact connectable to a first electrical device: a socket comprising a bore having a pair of openings, each opening adapted to receive the plug, the socket having an electrical contact for connection to a second electrical device; means for holding the plug in an operative position within the socket such that there is electrical connection between the plug and socket electrical contacts, the insertion of the plug into the operative position in the socket preventing a second plug being inserted to an operative position through the other opening of the socket.
An advantage of such a connector is that it enables positive connection to be made from more than orientation. The contacts of the plug are arranged so that they are correctly arranged for connection to corresponding contacts in the socket in any orientation. A further advantage of this invention is that it also prevents double plugging i.e.
only one plug can be inserted at any one time. When a connection is made, the plug fills the socket so as to prevent erroneous plugging of another plug.
In accordance with a preferred embodiment of the invention, the electrical contacts of the plug and the socket are resiliently biased towards each other when the plug is inserted. This helps to hold the plug in its operative position in the socket and provide good electrical contact.
A further advantage of the invention is that the electrical connections are made inside the socket. This helps to protect the contacts from accidental damage.
In order that the invention may be fully understood preferred embodiments thereof will now be described, by way of example only, with reference to the accompanying drawings in which Figure 1 show a sectional view of the board mounted connector and the cable connector plug inserted from the left hand side. The left hand side is effectively the internal plug in position; Figure 2 shows a sectional view of the connector showing the cable connector plug inserted from the right hand side. (Plugged in from outside the device): and Figure 3 shows an external view of the cable connector moulding.
The PCB mounted connector, as described herein, is designed to allow a mating cable connector to be plugged in from either end. This is particularly advantageous when the connector is positioned on the edge of a device as it allows an internal connector to be plugged and when plugged, to prevent an external connector from also being plugged.
Alternatively if no internal connector is plugged, an external connector from outside the device may be plugged.
The connector of the present invention may be used to connect a cable or flexible circuit to a printed circuit board or to a flexible circuit. The cable may be a bulk round cable, a flat cable, a ribbon cable, a loom cable or any other type of cable. Furthermore, although in the embodiment described, the connector is mounted to a PCB it should be understood that this is merely a practical example and not a limitation.
Figure 1 shows a sectional view of the connector socket with a plug-in cable connector inserted from the left hand side. The socket is indicated at 10 and may be attached to a circuit board as desired by means of PCB board locks 20 or any other suitable method of attachment.
Electrical connection to the socket is achieved with the contact blade 30 which is resiliently mounted in the socket. The contact blade extends from the socket portion so as to be in electrical connection with solder or a connection pad on the PCB.
In accordance with a preferred embodiment of the present invention the contact blade is held in its operative position by a hooked portion 35 of the contact blade and a corresponding restricting recess 36 in the body of the socket. The end of the contact blade is anchored into a shaped recess 37 in the socket. The slot 37 allows the contact blade 30 to deflect when it mates with the plug contact blade. The slot allows adequate electrical mating forces to exist.
The socket of the connector has a pair of locking ramps or recesses 40 which serve to locate and hold the plug in the correct operative position and to prevent inadvertent removal. Preferably there is a locking ramp at each opening of the socket. The locking ramp corresponds to a raised portion or bump 45 on the plug such that the bump "snap-fits" into the locking ramp. Any other type of detent means may be used to hold the plug in its operative position in the socket. It is of course necessary that the plug can be held in position no matter which opening of the socket it is inserted through.
The connecting cable 50 is held into a crimp contact terminal by two methods. The insulation portion of the cable is retained by the insulation crimp barrel 55 and the electrical connection for the cable via the wire crimp barrel 60. The crimp terminal is designed to latch into the plug moulding. This contact 70 has a mating face that is contactable on two sides. This allows for the cable connector to be inverted when inserted from opposite ends. The contact blade of the plug provides a resilient, spring connection to the contact blade of the socket.
In accordance with a preferred embodiment of the present invention the cable connector plug has an access opening 80 which allows the crimp contact retaining latch 85 to be depressed to allow the contact blade 70 to be drawn back out through the plug. When the plug is not inserted in the socket, the crimp contact is withdrawn from the plug section by inserting a small tool in the hole in the moulding i.e. access opening 80. Upon the insertion of a small tool the blade of the retention latch is depressed and this allows the contact to be withdrawn from the moulding. This enables faulty contacts to be repaired and replaced. It also means that the plug can be reused for another application by inserting different contacts from another cable.
Preferably the plug has a buffer edge 75 which prevents the plug from being forced too far into the socket and also assists in removal of the plug from the socket i.e. it acts as a stop when fully inserted and doubles as a finger grip to assist unplugging the connector.
The buffer edge can extend along the top and bottom edges of the plug, all the way round the edge of the plug or only a section thereof.
It can be clearly seen from Figure 1 that the plug is inserted into the socket so that the contact latch and the contact blade are spring biased towards each other. Alternatively, the contact latch and the contact blade may be a sliding fit or any other contact method may be employed so long as it provides electrical contact between the latch and the blade.
Figure 2 shows the plug inserted through the other opening of the socket. The cable connector plug is inserted with the locking ramp upper most when inserted from one end and lower most when inserted from the opposite end. This ensures that contact one always connects to contact one i.e. the plug contact always contacts its corresponding socket contact. This is made possible because the mating face of the plug contact 70 is contactable from two sides of the plug. It will be understood that the bidirectional connector may be oriented in any position and that the directions given herein are merely examples. The locking ramp and bump help to ensure positive retention in any orientation.
Figure 3 shows the crimp cable moulding of the preferred embodiment in more detail. The buffer edge 75 is located at the top and bottom edges of the plug and assists in removal of the plug. The locking ramp 45 is shown on one side of the plug. The openings for the contact blades of the plug (shown at 70 in Figure 1) are shown at 90. Any number of contact blades may be inserted in the openings as required. The crimp cable moulding also serves to protect the contact blades against accidental damage. The contact blades 30 of the socket are protected within the socket part of the connector.
The connector may be made from any of the many insulating materials currently used in connector applications. It is not limited to any one particular material.

Claims (14)

1. A connector for connecting a first electrical device to a second electrical device, comprising: a plug having an electrical contact connectable to a first electrical device; a socket comprising a bore having a pair of openings, each opening adapted to receive the plug, the socket having an electrical contact for connection to a second electrical device; means for holding the plug in an operative position within the socket such that there is electrical connection between the plug and socket electrical contacts, the insertion of the plug into the operative position in the socket preventing a second plug being inserted to an operative position through the other opening of the socket.
2. A connector as claimed in claim 1 wherein one of the openings is adapted to receive the plug in a first orientation and the other opening is adapted to receive the plug in a second orientation, the second orientation being the invert of the first orientation.
3. A connector as claimed in any of claims 1 or 2 wherein the electrical contact of the plug has two mateable surfaces to allow electrical connection from more than one orientation.
4. A connector as claimed in any of the preceding claims wherein the electrical contact of the socket is resiliently biased to contact the electrical contact of the plug when the plug is inserted.
5. A connector as claimed in any of the preceding claims wherein the electrical contact of the plug is resiliently biased to contact the electrical contact of the socket.
6. A connector as claimed in any of claims 4 or 5 wherein the electrical contacts are spring metal contacts.
7. A connector as claimed in any of the preceding claims further comprising detent means for retaining the plug in an operative position within the socket.
8. A connector as claimed in claim 7 wherein the detent means comprises a raised portion on either the plug or the socket and a corresponding recess in the other one of the plug and socket.
9. A connector as claimed in any of the preceding claims wherein the plug has a buffer edge.
10. A connector as claimed in any of the preceding claims wherein the electrical contact of the plug has a retaining latch whereby the electrical contact may be removed from the plug when the retaining latch is depressed.
11. A connector as claimed in any of the preceding claims wherein the second electrical device is a printed circuit board.
12. An electrical circuit comprising a first electrical device connected to a second electrical device by a connector as claimed in any of claims 1 to 9.
13. A socket comprising: a bore having a pair of openings, each opening adapted to receive a plug; an electrical contact for connection to an electrical device; and means for holding a plug in an operative position within the socket such that there is electrical connection between the socket and a plug when it is inserted in the socket, insertion of a plug into the socket preventing a second plug being inserted to an operative position through the other opening of the socket.
14. A connector substantially as hereinbefore described with reference to the drawings.
GB9416383A 1994-08-13 1994-08-13 Electrical connector Withdrawn GB2292264A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9416383A GB2292264A (en) 1994-08-13 1994-08-13 Electrical connector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9416383A GB2292264A (en) 1994-08-13 1994-08-13 Electrical connector

Publications (2)

Publication Number Publication Date
GB9416383D0 GB9416383D0 (en) 1994-10-05
GB2292264A true GB2292264A (en) 1996-02-14

Family

ID=10759825

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9416383A Withdrawn GB2292264A (en) 1994-08-13 1994-08-13 Electrical connector

Country Status (1)

Country Link
GB (1) GB2292264A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2228027A1 (en) * 2009-03-10 2010-09-15 Celon AG Medical Instruments High frequency surgical device

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004765A1 (en) * 1984-04-04 1985-10-24 A/S Lo^/Gstrup-Steel Contact clip and plug pin therefor and modular built current connecting clip line and plug pin line built thereof
GB2234121A (en) * 1989-06-21 1991-01-23 Moulinex Sa A female connector for receiving plug contacts in two orientations

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1985004765A1 (en) * 1984-04-04 1985-10-24 A/S Lo^/Gstrup-Steel Contact clip and plug pin therefor and modular built current connecting clip line and plug pin line built thereof
GB2234121A (en) * 1989-06-21 1991-01-23 Moulinex Sa A female connector for receiving plug contacts in two orientations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2228027A1 (en) * 2009-03-10 2010-09-15 Celon AG Medical Instruments High frequency surgical device
US8251752B2 (en) 2009-03-10 2012-08-28 Celon Ag Medical Instruments High frequency surgical device

Also Published As

Publication number Publication date
GB9416383D0 (en) 1994-10-05

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)