EP1914837A2 - Connecteur électrique - Google Patents

Connecteur électrique Download PDF

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Publication number
EP1914837A2
EP1914837A2 EP07254145A EP07254145A EP1914837A2 EP 1914837 A2 EP1914837 A2 EP 1914837A2 EP 07254145 A EP07254145 A EP 07254145A EP 07254145 A EP07254145 A EP 07254145A EP 1914837 A2 EP1914837 A2 EP 1914837A2
Authority
EP
European Patent Office
Prior art keywords
connector
cable
recess
electrical connector
mateable
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Withdrawn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
EP07254145A
Other languages
German (de)
English (en)
Other versions
EP1914837A3 (fr
Inventor
Gary Barnett
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.)
Tyco Electronics UK Ltd
Original Assignee
Tyco Electronics UK 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 Tyco Electronics UK Ltd filed Critical Tyco Electronics UK Ltd
Publication of EP1914837A2 publication Critical patent/EP1914837A2/fr
Publication of EP1914837A3 publication Critical patent/EP1914837A3/fr
Withdrawn legal-status Critical Current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
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/11—End pieces or tapping pieces for wires, supported by the wire and for facilitating electrical connection to some other wire, terminal or conductive member
    • H01R11/32—End pieces with two or more terminations
    • 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
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • H01R13/622—Screw-ring or screw-casing
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R11/00—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts
    • H01R11/01—Individual connecting elements providing two or more spaced connecting locations for conductive members which are, or may be, thereby interconnected, e.g. end pieces for wires or cables supported by the wire or cable and having means for facilitating electrical connection to some other wire, terminal, or conductive member, blocks of binding posts characterised by the form or arrangement of the conductive interconnection between the connecting locations
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/36—Conductive members located under tip of screw
    • 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
    • H01R4/28—Clamped connections, spring connections
    • H01R4/50—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw
    • H01R4/5083—Clamped connections, spring connections utilising a cam, wedge, cone or ball also combined with a screw using a wedge

Definitions

  • Such cable usually is supplied coated with an insulative material (e.g. a polymer of a kind that is well known in the art) coated over its length.
  • an insulative material e.g. a polymer of a kind that is well known in the art
  • the purpose of such a coating is to render the cable electrically safe so that those touching the cable suffer no risk of an electric shock; and the cable itself is protected against the short circuits that might occur were the cable to be grounded inadvertently.
  • an insulative material in the form of a sleeve of an elastomeric, insulative polymer is then applied over the assembled connector in order to prevent short-circuiting of the cylinder (which is intended to become electrically live) with other objects.
  • This type of connector is referred to herein as a "one-piece" connector, notwithstanding that the clamp and insulation components in fact mean that the device comprises several parts.
  • Cable connectors of the one-piece type are very widely used, but they suffer from a disadvantage in some circumstances.
  • the cables requiring connection are in a "field" location, which may be (for example) within a constructional feature such as a wall, floor or ceiling; buried in the ground or in a roadway or hard standing; or contained within a machine or a housing.
  • a known proposal for solving this problem is to manufacture the conducting cylinder of the connector in two parts that are themselves joinable together. Using this solution it is possible to clamp one connector part to each cable end before joining the connector parts one to the other. Thereafter the insulation may be applied to the assembled connector in a similar manner to that described above.
  • GB-A-2 319 402 discloses one known connector of this type.
  • a perforated tab protrudes forwardly of a first connector part and is receivable in a perforated recess formed in a second connector part.
  • the recess is defined by a pair of forwardly projecting tabs.
  • a bolt is used releasably to connect the two connector parts together following insertion of the tab into the recess such that the perforations in the respective parts are mutually aligned.
  • the recess in the second connector part is replaced by a single, projecting tab.
  • This tab has formed in an upper surface a V-profile depression.
  • the tab of the first connector part is formed with a protruding V-profile ridge that is receivable in the depression. This enhances the rigidity of the assembled connector.
  • an electrical connector that is assemblable from a dismantled to an assembled condition and comprises a pair of electrically conducting connector parts that are securable together to define the connector, each connector part having formed therein a cable recess for receiving a respective cable requiring connection; each said recess communicating with the exterior of the associated connector part via a cable insertion aperture; each connector part including one or more cable clamps that are operable in order to clamp a cable inserted via the cable insertion aperture; and the said connector parts having respectively formed thereon or therein a mateable portion, of a multi-part connection, which mateable portions are mutually engageable to prevent separation of the connector parts from one another in at least a first direction, characterised in that:
  • the feature of providing mateable portions, on or in the connector parts, that are receivable one inside the other means that the overall length of the connector may be no greater than that of a connector whose cylindrical body is a single piece.
  • the ability to make the connector the same size as the equivalent one-piece design means that the same insulative coverings may be used in kits for both the connector types. This allows economies in terms of the manufacture or provision of the insulative coatings; and also reduces the risk of a kit being wrongly packaged (i.e. with the wrong size of insulator), thereby in turn reducing the risk of incorrectly insulated installations.
  • the male dovetail portion and the female dovetail recess are each tapered in two mutually divergent directions. This feature may be used to ensure that the mateable portions may be moveable relative to one another, during assembly of the connector, in only one direction. This improves the strength of the connector.
  • the connector includes a secondary lock comprising a ring having a ring thread and each said connector part includes a cylindrical portion at least in the vicinity of its associated mating portion, the cylindrical portion of one of the said connector parts including a connector thread whereby the ring thread is engageable with the connector thread to secure the connector parts one to the other following mating of the mateable portions.
  • the ring may as a result be moveable translationally relative to the mateable portion, thereby facilitating engagement of the ring thread with the connector thread of the other mateable portion.
  • the female dovetail recess includes one or more external walls that are shaped to permit pressing of the female dovetail recess and the male dovetail member together so as to resist separation.
  • This arrangement advantageously provides a secure connection between the connector parts.
  • an installer may use a tool such as but not limited to a pair of pliers for the purpose of pressing the external wall of the female connector part in order to achieve the above-described effect.
  • the second direction is parallel to the longitudinal extent of the cylindrical shape.
  • the principles of the invention however may in theory be employed in cable joints that represent a change in direction in the line of the cables. In that case it would not be necessary for the second direction to be parallel with the longitudinal extent (if any) of the cylindrical shape.
  • each said cable clamp includes an actuator that is operable to cause clamping of a said cable, each said actuator being operable from outside the associated connector part.
  • each said cable clamp includes a threaded bolt that is threadedly engaged in a threaded aperture passing through a wall of the connector part such that the bolt penetrates the cable recess thereof, the head of the threaded bolt defining the said actuator.
  • each connector part includes a pair of the threaded bolts engaged in a corresponding pair of threaded apertures. This has been found to provide a good effectiveness of the clamps in the space available in the connectors.
  • the connector When assembled the connector preferably includes an insulative material (such as a "heat shrink” or “cold shrink” insulating tube) coated over the connector in its assembled condition.
  • an insulative material such as a "heat shrink” or “cold shrink” insulating tube
  • the method includes the step of operating the lock to lock the mateable portions of the multi-part connection one to the other.
  • the connector 10 is formed from a pair of mutually connectable connector parts 11, 12 that in the embodiment shown are cylinders of essentially the same diameter and length.
  • the cylindrical connector parts are preferably made by machining from aluminium or a similar, conductive, soft metal; although in practice a wide range of conductive materials is possible.
  • each of the connector parts 11, 12 has formed therein a cable recess 13 for receiving a respective cable end requiring connection.
  • each cable recess 13 extends from an in-use free end of the associated connector part 11, 12 towards the centre thereof that is defined when the connector parts are connected together.
  • Each recess 13 terminates at the free end of its associated connector part 11, 12 in a cable insertion aperture 14 permitting connection between the interior and the exterior of each respective connector part 11, 12.
  • the cable recesses 13 are themselves cylindrical bores extending parallel to the longitudinal axis of each connector part 11, 12.
  • Other arrangements of cable recesses are possible within the scope of the invention. Examples include recesses of regular and irregular cross-section and recesses that do not extend parallel to the axis of the connector parts 11, 12.
  • the cylindrical bores shown however are particularly preferred since they are easy to manufacture in a drilling operation following forming of the cylinders 11, 12 eg. by machining.
  • the recess 13 formed in connector part 11 terminates adjacent the centre of the assembled connector in an opening 16.
  • the recess 13 formed in connector part 12 terminates at the centre of the connector 10 in a cap 17.
  • Each of the connector parts 11, 12 includes a pair of cable clamps defined by respective threaded bolts 18 and corresponding, threaded apertures 19.
  • Each threaded aperture 19 perforates the material of the associated connector part 11, 12.
  • the bolts 18 may be threadedly engaged in the threads formed in the apertures 19 such that on rotation of each bolt 18 its end penetrates into one or other of the cable recesses 13.
  • each threaded aperture 19 is chamfered as signified by numeral 19a in order to facilitate engagement of one of the bolts 18 therein.
  • the ends of the bolts 18 that are in Figure 1 the lowermost ends are chamfered in a complementary fashion also for this purpose.
  • the mateable portion is a female dovetail recess 21 formed in the end of the connector part 11 adjacent the opening 16.
  • Female dovetail recess 21 is tapered in two directions.
  • connector part 11 At its end remote from cable insertion aperture 18 connector part 11 defines an outer annular wall 27 in which female dovetail recess 21 is formed.
  • Female dovetail recess 21 defines a truncated triangular shape that perforates the wall 27 at two essentially opposite locations on its circular exterior.
  • the female dovetail recess 21 is wider than at the other, whereby the recess tapers as a truncated triangular shape from one side of the end of connector part 11 to the other.
  • a second sense recess 14 tapers inwardly from a location that is relatively proximal to the nearest aperture 19 towards the free end of connector part 11. Such tapering is in the embodiment shown present along the two diverging edges of the female dovetail recess 21 that are visible when viewing the end of connector part 11 in elevation.
  • Cap 17 which typically is integrally formed with connector part 12 as a result of a machining process, has protruding therefrom a male dovetail member 22 that is of complementary shape to female dovetail recess 21.
  • a second direction of taper, along the edges of male dovetail member 22 from its free end towards the nearest threaded aperture 19, is represented by a pair of undercuts 23 that extend along the length of the edges of the member 22.
  • the connector parts 11, 12 incorporate connector formations that strongly resist strain in the longitudinal direction of the connector 10 yet are easy to assemble by sliding transversely one relative to the other.
  • the overall longitudinal length of the parts securing the connector parts 11, 12 together is no greater than if the connector parts 11, 12 had been machined as a single, solid item having no joint between them.
  • the male and female dovetail formations 21, 22 extend in a direction that is aligned with the direction of insertion of the bolts 18 into the threaded apertures 19.
  • the bolts 18 may be offset relative to the direction of sliding together of the mateable portions defined by the male and female dovetail members 21, 22 (or their equivalent structures in another embodiment).
  • each connector part 11, 12 is essentially cylindrical in shape.
  • Threads 26 and 28 are of complementary profile whereby ring 24 may be screwed onto wall 27.
  • ring 24 is temporarily mounted onto the cylindrical portion of connector part 12 since away from the respective cylindrical portions the diameter of each connector part increases at a shoulder 31.
  • the increase in diameter at the shoulder 31 means that when the dovetail formations 21, 22 are engaged the ring 26 may be retained loosely captive between the connector parts 11, 12.
  • the loose captivity of the ring 26 permits it to be screwed onto the thread 28 after assembling together of the connector parts 11, 12 thereby rendering the connection between the connector parts 11, 12 extremely robust, secure and electrically conducting.
  • each connector part 11, 12 is greater than the extent in any direction of the dovetail formations 21, 22 and associated features, whereby the connection between the connector parts 11, 12 is advantageously of "low profile" relative to the remainder of the connector 10.
  • the use of male and female dovetail formations 21, 22 assures that the length of the connection between the connectors parts 11, 12 is not great.
  • each bolt 18 is a so-called "shear" bolt, having formed at intervals along its length a series of annular shear grooves 31.
  • Each of the pair of clamp bolts 18 visible in the figures may then be tightened, using a spanner engaged with the associated head 29, into the hollow interior of the associated connector part 11, 12.
  • each bolt 18 As the free end of each bolt 18 penetrates the aforesaid interior it presses the cable strands into contact with the adjacent wall of the connector part interior. This clamps the cable strands and prevents them from being pulled out via the cable insertion apertures and at the same time promotes good electrical conduction between the cable strands and the material of the connector part in question.
  • the torque at which the shear grooves 31 cause shearing of each connector bolt 18 may be set at a level consistent with these requirements.
  • a series of the shear grooves is provided, whereby the connector 10 may accommodate cables of differing thicknesses in a single design. Following shearing of the shear bolts the separated parts thereof including the hexagonal heads 18 are discarded.
  • the ring 24 may be slid temporarily over the cylindrical end of connector part 12 adjacent the male dovetail member 22 before the dovetail member 22 is slid transversely to the longitudinal axis of the connector 10 into the female dovetail recess 21, until the connector parts 11, 12 are aligned with one another as shown in Figure 2.
  • the next stage in the assembly process involves compressing the wall 27 of female dovetail formation 21 with pliers, grips or a similar tool, in order to promote frictional retention of the dovetail formations 21, 22 in engagement with one another. Thereafter thread 26 may be tightened onto thread 28 compressing the dovetail connection and thereby ensuring that separation of the connector parts 11, 12 in the aforesaid longitudinal direction is impossible.

Landscapes

  • Multi-Conductor Connections (AREA)
  • Connector Housings Or Holding Contact Members (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)
EP07254145A 2006-10-20 2007-10-18 Connecteur électrique Withdrawn EP1914837A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0620868A GB2443000A (en) 2006-10-20 2006-10-20 An electrical power cable connector

Publications (2)

Publication Number Publication Date
EP1914837A2 true EP1914837A2 (fr) 2008-04-23
EP1914837A3 EP1914837A3 (fr) 2009-11-04

Family

ID=37508074

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07254145A Withdrawn EP1914837A3 (fr) 2006-10-20 2007-10-18 Connecteur électrique

Country Status (2)

Country Link
EP (1) EP1914837A3 (fr)
GB (1) GB2443000A (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013165955A1 (fr) * 2012-05-02 2013-11-07 Tyco Electronics Corporation Ensembles connecteurs ainsi que systèmes et procédés permettant de former des ensembles de jonction pouvant être désolidarisés
US9147967B2 (en) 2012-09-11 2015-09-29 Tyco Electronics Canada Ulc Electrical connectors and methods for using same
EP3159977A1 (fr) * 2015-10-21 2017-04-26 Tyco Electronics SIMEL S.A.S Connecteur partagé avec queue d'aronde circulaire
US11276946B2 (en) 2019-03-21 2022-03-15 TE Connectivity Services Gmbh Cable connector system and a method of connecting electrical cables

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0669044A1 (fr) 1992-11-12 1995-08-30 B & H Nottm Ltd Connecteur electrique.
GB2319402A (en) 1996-11-08 1998-05-20 B & H Ltd Two-part connector to join conductors

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1836480A (en) * 1924-10-14 1931-12-15 Matthew H Loughridge Outlet for electrical conductors
US1939105A (en) * 1931-02-28 1933-12-12 George W Thompson Battery terminal connecter
US5487479A (en) * 1992-11-23 1996-01-30 The Manitowoc Company, Inc. Method for nesting longitudinally divisible crane boom segments
US5406874A (en) * 1992-12-31 1995-04-18 Witchel; Jim J. Melamine sheet guitar
EP0809340A1 (fr) * 1996-05-20 1997-11-26 Giorgio Boscolo Dispositif de support pour câbles aérien, en particulier câbles de télécommunication
EP1206024B1 (fr) * 2000-11-10 2009-07-15 Nexans Jonction de câbles utilisant un ensemble tubulaire semi-conducteur et procédé d'obtention d'un connecteur à blindage lisse
GB0202710D0 (en) * 2002-02-06 2002-03-20 Tyco Electronics Ltd Uk Fastener

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0669044A1 (fr) 1992-11-12 1995-08-30 B & H Nottm Ltd Connecteur electrique.
GB2319402A (en) 1996-11-08 1998-05-20 B & H Ltd Two-part connector to join conductors

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013165955A1 (fr) * 2012-05-02 2013-11-07 Tyco Electronics Corporation Ensembles connecteurs ainsi que systèmes et procédés permettant de former des ensembles de jonction pouvant être désolidarisés
US8747170B2 (en) 2012-05-02 2014-06-10 Tyco Electronics Corporation Connector assemblies and systems and methods for forming disconnectable joint assemblies
US9147967B2 (en) 2012-09-11 2015-09-29 Tyco Electronics Canada Ulc Electrical connectors and methods for using same
EP3159977A1 (fr) * 2015-10-21 2017-04-26 Tyco Electronics SIMEL S.A.S Connecteur partagé avec queue d'aronde circulaire
US10135158B2 (en) 2015-10-21 2018-11-20 Tyco Electronics Simel Sas Split connector with circular dove tail
US11276946B2 (en) 2019-03-21 2022-03-15 TE Connectivity Services Gmbh Cable connector system and a method of connecting electrical cables

Also Published As

Publication number Publication date
GB2443000A (en) 2008-04-23
GB0620868D0 (en) 2006-11-29
EP1914837A3 (fr) 2009-11-04

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