CA2232072A1 - Cable couplers - Google Patents
Cable couplers Download PDFInfo
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- CA2232072A1 CA2232072A1 CA 2232072 CA2232072A CA2232072A1 CA 2232072 A1 CA2232072 A1 CA 2232072A1 CA 2232072 CA2232072 CA 2232072 CA 2232072 A CA2232072 A CA 2232072A CA 2232072 A1 CA2232072 A1 CA 2232072A1
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- cable
- cage assembly
- end cage
- housing portion
- coupling means
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Abstract
Cable coupling means [10] for a multi core electrical cable is provided which has an end cage assembly [20] forming a plurality of electrical termination recesses [19] arranged symmetrically about ~ longitudinal cable coupling axis for terminal mounting insulators [13] engages captively therein.
Terminal pins [11] of respective cable cores extend into open ends of the terminal mounting insulators [13] where they are accessible for making a connection. A housing portion [21]
extends rearwardly to a cable end assembly [30] which captively and coaxially supports the electrical cable [51].
Terminal pins [11] of respective cable cores extend into open ends of the terminal mounting insulators [13] where they are accessible for making a connection. A housing portion [21]
extends rearwardly to a cable end assembly [30] which captively and coaxially supports the electrical cable [51].
Description
CA 02232072 l998-03-l3 "CABLE COUPLERS"
This lnventlon ralate~ ta cable couplers for multl-core ~lectrlcal cable. In partlcular lt relates to cable couplers for hlgh voltage cable~ ~uch as 19 used ln mlning operatlons.
However it 1~ not limlted to ~uch appllcatlons and may be u~ed ln low voltage appllcatlon~ if deslred.
In my earller Au~tralian Patent No. 6545~7, there 19 de6crlbed a cable cou~l~r whlch utlli~8s a multi-component constructlon ln order to malntaln the cable cores ln thelr correct orlentatlon ln the coupler houslng whlch 19 earthed/grounded. Thls i8 achieved ~y havlng a cloverleaf-sectloned houslng formed at on~ ~nd wlth a complementary flanged. lnsert ~hlch support~ the connector~ ln a ~ymmetrical array and into whlch the respectlve cables are secured. In additlon, the cablee are led to the connectors through a tapered element which maintAins the cables ln thelr ~ubstantially symmet~ical at~ltude.
Whlle these couplsr~ are effective ln U813, thelr o~erative placeMent at the end of a cable 1~ ~omewhat tlme consuming and cumbersome and the cost of manufacture ther~of 1~ rel.atlvely hlgh beceuse of the conf lguratlon of the coupler.
For hlgh voltaye appllcatlons 5UC*S as over 6,600 volts, el~ctr~cal stres6es ~e~ulpot~ntlal and flux l~nes) becom~
crltical such that it 19 most de~irsbl~ to malntaln the cable cores wl~hln the housing, ln the symmetrlcal radlal geometry ln whlch they are dlspos~d in the cable. In the present couplers the tap~red element and the complementary cloverleaf-sectloned hou~lng are cast and thus lt i.~
dlf~lcult to mass produce the couplers and maintaln the tapered ele~ent a~ a sym~trlcal slide-ln ~lttlng withln the co~plementary shaped houslng.
The proaen~ lnvention al~ to allevlate at lea~t one of the above dlsadvantages and to provlde cable coupllng mean whlch wlll be rellable and efficlent in U9~3.
Wlth the foregolng i~ vlew, thls lnventlon ln one a pect resides broadly ln cable coupllng means for a multl core electrlcal cabls lncludlng;-~n end cage asseMbly adapted to be coupled to a complementary mounting whlch may be the end cage as~em~ly of a corr2~pondlng cable coupllng means:
a plurallty o~ electrical termlnatlon rece~6e6 extendlng through the end cage asse~nbly from a mounting face thereof ~o the re~r facs thereof and arranged ~ymmetrlcally about a longltudinsl axls;
terminal ~ountlng lnaulators engageabl~ captlvely ln respective ~ald electrlcal termlnatlon recesse~ and able to rece~ve and support terminal. pln3 to which the resp~ctlve cable corea nlay be connected;
a hou~ing portlon extending rearwardly from the end cage assembly and havlng a plurallty of cyllnd~ical passageways ex~ending thero through ~nd srranged ~nme tric~lly about said CA 02232072 l998-03-l3 longitudlnal axls, the passageway~ correspondlng to the electrlcal termlnatlon rece~ses ln ~ald end cage as~embly, and a cable end assembly connectable to the rear end of sald heuslng portlon for captlvely supporting th~ electrlcal cable coaxially wlth the longltudinal axl~ of ~aid housing portlon.
The end c~ge asfieMbly ls suitably formed wlth a mounting flange extendlng at rlght angles to the longitudlnal axls and ~elng apertured or recessed for bolted connection to a comple~entary ~ounting~ The end cage assem~ly could be formed of ~ plastlc3 material but preferably it 15 formed of metal ~uch as aluminlum, ph~sphor b~onze or stalnless steel.
Slmllarly lt i~ preferred t~at all the external parts of the cable coupling Means be formed from metal and ~uitably as castlngs.
In a preferred embodlment the cable coupllng mean~ is adapted for co~pllng a three cor~ cable and the end cage assembly comprl~e~ a flanged front end portlon and a rear extension portion of complementary lnternal and external cloverleaf-section~ providlng ter~lnation recesses ln the form of cyllndrlcal passages whlch open to co-axlal cyllndrical p~sageway~ ln the heusing portlon, whlch 19 preferably of slmllar clover leaf section.
The rear extenslon of the end cage assembly may be suf flclontly long to accommodate th~ termlnal mountlng insulator~ ~ut preferably lt ls relatively s~ort and accommodates onl~ a leadlng portlon thereof and ln whlch the ends of termlnal plns supported thereby are exposed.
Suitably the trallln~ port~on3 of the t~rminal mountlng lnsulator~ extend rearwardly beyond the end cage a~embly and are accom~odated wlthin the houslng portlon.
The houslng portlon and the end cage a~sembly may be formed lntegrally, ~uch a3 to prov~d~ a lighter constructlon but preferably the housing portion bolts to the end csge a~sembly and the pas~a~eway~ ln the hou~lng portlon hold the termlnal mountlng in6ulatorq captive ln the end cage.
Preferably the end of the houslng portloll whlch abuts the end cage as~elnbly la adapted to co-op~rate with respectlve collar6 on the ter~lnal mounting in3ulators for capt~vely securing them withln the end cags as~embly and free spac~ 1~ provided abo~t the portlans of the termlnal mountlng ins~lators withln the houslng portlon whlch may be fllled wlth a sultable filler of known type.
Where the end cage as~eMbly and the houslng portion are formed integrally it ls preferred that the ~ermlnal mountlng lnsulator~ are held captlve ln the end cage a~.qembly by retainlng means engaged wlthln the front face of the end cage A~sembly .
It is al~o preferred that the càble end assembly i~, prlor to final asssmbly, able to be slid along the cable such that the cable cores may be ~ep~rated and made off to the aorrect length and fltted into respectlve termlnal plns whlch pas~ lnto and ars ~ecured ln the termlnal mountlng lnsulators prlor to movlng ~he cabla end asse~ly to an ope~atlve positlon connected to the houBlng portlon and clamped about the cable.
In order ~hat this t nvention may be more readily understood and put lnto pr~ct~ cal effect, reference wlll ncw ~e made to the accompanylng drawlng~ which lllustrate a typlcal smbodlment of the lnventlon and whereln:-FIG. 1 provlde~ an exploded slde ~levation of one embodlment of the lnventlon sultable for use wlth r~bber tralling electrlcal cable;
FIG. 2 i6 an exploded perspectl~e vlew of the Fig. 1 embodlment:
FIG. 3 19 ~ cro~-sectional vlew of the assembled ca~le ooupler lllustrated ln Flg, l;
FIG. 4 ls a slde vlew of a sln~le term~nated cable core;
F2G. 5 19 a front end vlew of the Fig. 1 embodlment;
FIG. ~ 1~ sn cro~s-sectlonal view of a rear end portlon o~ the hou~lng portlon;
FIG. 7 lllustrate6 altorn~te l~youts of flange mountlngs;
FIG. 8 lllustrates the arrangemant of the cable end assembly for use wlth paper ins~lated lead or ~lngle wlre armoured electrlc~l cable:
'25 FIG. 9 lllustrate~ a further varlatlon o~ th~ i.nventlon;
FIGS. 10 to 13, and FIGS. 14 and 15 lllustrate alternate llghtwelght con~tructlons suit~ble for underground use and correspondlng to the embodlments lllu~trated ln Fig~. 1 to 6 and Flg. 8 respectlvely.
Referring lnitlally to Flg~. 1 to 6 o~ the drawlngs, the cable coupllng mean~ 10 i9 adapted :eor providlng a termlnation ln the ~orm of accessible pln9 11 for three core ru~er tralllng electrical cable 12. These plns 11 extend through terminal mountll-g lnsulators 13 and have a threaded connector head 14 ln whlch the length of the cable may be adJusted and ~et prlor to ~olderlng.
The opposite end portlon o~ the plns 11 are formed wlth a circllp groove for a clrcllp 15 whlch ls secur~d ln place after the pins have ~een pas~ed through the loc~tlng ap~rtures 16 ln the tormlnal mountlng lnsulators 13.
Sultably one end of r~spectl~e double ended female connector~
26 p~s~e~ lnto the open end 27 of each lnsulator to m~ke the contact with the protruding accesslble pln 11. Boltlng flanges ~8 are providod for securln~ the coupling.
The ln~u~ators 1~ are provlded with a shallow external flange 17 about thelr out~r end whereby the~ may be held captive betwoen a collar 18 on the lnside face of each termlnatlon recess 19 ln th~ ~nd cage a6sembly 20 and the adJolnlng end of the hou~lng 21, a~ lllu~trated in Fig. 3.
The c~llndrlcal termln~tlon recesses 19 and the complementary pa~sagsways 22 ln the houslng 21 e~tend co-axlally snd are di~po~ed in a cloverleaf conflguration symmetrloally about a longltudlnal axls of the cable cou~llng moana 10. Typlcally, the end cag~ a~mbly 20 is supplied through-~olted to th~ housll~g 21 with cap ~cr~w~ 23 wlth th~
termlnql mountlng ln~ulator~ 13 secur~d thereb~tw~en The S c~ble ond ~s~e~bly 30 1~ Earmed ln thr~e parto comp~l~ing a rubber gl~nd fittlng 31, an end cap 32 and a clamp~ng ring a~sembly 33. All theee coMpononts can be fltted alldably over the c~ble 12 80 ~h~ the~ mo~ be push~d ~long the c~ble away rrOm tho made off ~nd~ of tho conductors 25.
10The m~de off end~ ur~ secured ln re~p~ctlvo termln~l plns 11 after the cahle 19 strlD~ed of it~ outor she~ths and ~h~ etre~ rell~vin~ 1~ done ln thc crutch ln oonvention~l m~nner 1~ ~he form of wrapplng tape and coro ~ackers 40 provla~a at t~eir ents~ance ~o the hou~lng 21 ln order to 15malntaln the cables Wlthlll the houslng ex~endlng sub~tantially p~rallel to lt9 longl~udl~al axi~.
A~ter th~ cabl~ cor~ h~v~ be~n ma~e off and conn~c~ed to the plns 11, thc conductor~ may b~ ~d through th~
r~pectlve p~agQway~ 22 ln the houslng 11 with the l~adlng
This lnventlon ralate~ ta cable couplers for multl-core ~lectrlcal cable. In partlcular lt relates to cable couplers for hlgh voltage cable~ ~uch as 19 used ln mlning operatlons.
However it 1~ not limlted to ~uch appllcatlons and may be u~ed ln low voltage appllcatlon~ if deslred.
In my earller Au~tralian Patent No. 6545~7, there 19 de6crlbed a cable cou~l~r whlch utlli~8s a multi-component constructlon ln order to malntaln the cable cores ln thelr correct orlentatlon ln the coupler houslng whlch 19 earthed/grounded. Thls i8 achieved ~y havlng a cloverleaf-sectloned houslng formed at on~ ~nd wlth a complementary flanged. lnsert ~hlch support~ the connector~ ln a ~ymmetrical array and into whlch the respectlve cables are secured. In additlon, the cablee are led to the connectors through a tapered element which maintAins the cables ln thelr ~ubstantially symmet~ical at~ltude.
Whlle these couplsr~ are effective ln U813, thelr o~erative placeMent at the end of a cable 1~ ~omewhat tlme consuming and cumbersome and the cost of manufacture ther~of 1~ rel.atlvely hlgh beceuse of the conf lguratlon of the coupler.
For hlgh voltaye appllcatlons 5UC*S as over 6,600 volts, el~ctr~cal stres6es ~e~ulpot~ntlal and flux l~nes) becom~
crltical such that it 19 most de~irsbl~ to malntaln the cable cores wl~hln the housing, ln the symmetrlcal radlal geometry ln whlch they are dlspos~d in the cable. In the present couplers the tap~red element and the complementary cloverleaf-sectloned hou~lng are cast and thus lt i.~
dlf~lcult to mass produce the couplers and maintaln the tapered ele~ent a~ a sym~trlcal slide-ln ~lttlng withln the co~plementary shaped houslng.
The proaen~ lnvention al~ to allevlate at lea~t one of the above dlsadvantages and to provlde cable coupllng mean whlch wlll be rellable and efficlent in U9~3.
Wlth the foregolng i~ vlew, thls lnventlon ln one a pect resides broadly ln cable coupllng means for a multl core electrlcal cabls lncludlng;-~n end cage asseMbly adapted to be coupled to a complementary mounting whlch may be the end cage as~em~ly of a corr2~pondlng cable coupllng means:
a plurallty o~ electrical termlnatlon rece~6e6 extendlng through the end cage asse~nbly from a mounting face thereof ~o the re~r facs thereof and arranged ~ymmetrlcally about a longltudinsl axls;
terminal ~ountlng lnaulators engageabl~ captlvely ln respective ~ald electrlcal termlnatlon recesse~ and able to rece~ve and support terminal. pln3 to which the resp~ctlve cable corea nlay be connected;
a hou~ing portlon extending rearwardly from the end cage assembly and havlng a plurallty of cyllnd~ical passageways ex~ending thero through ~nd srranged ~nme tric~lly about said CA 02232072 l998-03-l3 longitudlnal axls, the passageway~ correspondlng to the electrlcal termlnatlon rece~ses ln ~ald end cage as~embly, and a cable end assembly connectable to the rear end of sald heuslng portlon for captlvely supporting th~ electrlcal cable coaxially wlth the longltudinal axl~ of ~aid housing portlon.
The end c~ge asfieMbly ls suitably formed wlth a mounting flange extendlng at rlght angles to the longitudlnal axls and ~elng apertured or recessed for bolted connection to a comple~entary ~ounting~ The end cage assem~ly could be formed of ~ plastlc3 material but preferably it 15 formed of metal ~uch as aluminlum, ph~sphor b~onze or stalnless steel.
Slmllarly lt i~ preferred t~at all the external parts of the cable coupling Means be formed from metal and ~uitably as castlngs.
In a preferred embodlment the cable coupllng mean~ is adapted for co~pllng a three cor~ cable and the end cage assembly comprl~e~ a flanged front end portlon and a rear extension portion of complementary lnternal and external cloverleaf-section~ providlng ter~lnation recesses ln the form of cyllndrlcal passages whlch open to co-axlal cyllndrical p~sageway~ ln the heusing portlon, whlch 19 preferably of slmllar clover leaf section.
The rear extenslon of the end cage assembly may be suf flclontly long to accommodate th~ termlnal mountlng insulator~ ~ut preferably lt ls relatively s~ort and accommodates onl~ a leadlng portlon thereof and ln whlch the ends of termlnal plns supported thereby are exposed.
Suitably the trallln~ port~on3 of the t~rminal mountlng lnsulator~ extend rearwardly beyond the end cage a~embly and are accom~odated wlthin the houslng portlon.
The houslng portlon and the end cage a~sembly may be formed lntegrally, ~uch a3 to prov~d~ a lighter constructlon but preferably the housing portion bolts to the end csge a~sembly and the pas~a~eway~ ln the hou~lng portlon hold the termlnal mountlng in6ulatorq captive ln the end cage.
Preferably the end of the houslng portloll whlch abuts the end cage as~elnbly la adapted to co-op~rate with respectlve collar6 on the ter~lnal mounting in3ulators for capt~vely securing them withln the end cags as~embly and free spac~ 1~ provided abo~t the portlans of the termlnal mountlng ins~lators withln the houslng portlon whlch may be fllled wlth a sultable filler of known type.
Where the end cage as~eMbly and the houslng portion are formed integrally it ls preferred that the ~ermlnal mountlng lnsulator~ are held captlve ln the end cage a~.qembly by retainlng means engaged wlthln the front face of the end cage A~sembly .
It is al~o preferred that the càble end assembly i~, prlor to final asssmbly, able to be slid along the cable such that the cable cores may be ~ep~rated and made off to the aorrect length and fltted into respectlve termlnal plns whlch pas~ lnto and ars ~ecured ln the termlnal mountlng lnsulators prlor to movlng ~he cabla end asse~ly to an ope~atlve positlon connected to the houBlng portlon and clamped about the cable.
In order ~hat this t nvention may be more readily understood and put lnto pr~ct~ cal effect, reference wlll ncw ~e made to the accompanylng drawlng~ which lllustrate a typlcal smbodlment of the lnventlon and whereln:-FIG. 1 provlde~ an exploded slde ~levation of one embodlment of the lnventlon sultable for use wlth r~bber tralling electrlcal cable;
FIG. 2 i6 an exploded perspectl~e vlew of the Fig. 1 embodlment:
FIG. 3 19 ~ cro~-sectional vlew of the assembled ca~le ooupler lllustrated ln Flg, l;
FIG. 4 ls a slde vlew of a sln~le term~nated cable core;
F2G. 5 19 a front end vlew of the Fig. 1 embodlment;
FIG. ~ 1~ sn cro~s-sectlonal view of a rear end portlon o~ the hou~lng portlon;
FIG. 7 lllustrate6 altorn~te l~youts of flange mountlngs;
FIG. 8 lllustrates the arrangemant of the cable end assembly for use wlth paper ins~lated lead or ~lngle wlre armoured electrlc~l cable:
'25 FIG. 9 lllustrate~ a further varlatlon o~ th~ i.nventlon;
FIGS. 10 to 13, and FIGS. 14 and 15 lllustrate alternate llghtwelght con~tructlons suit~ble for underground use and correspondlng to the embodlments lllu~trated ln Fig~. 1 to 6 and Flg. 8 respectlvely.
Referring lnitlally to Flg~. 1 to 6 o~ the drawlngs, the cable coupllng mean~ 10 i9 adapted :eor providlng a termlnation ln the ~orm of accessible pln9 11 for three core ru~er tralllng electrical cable 12. These plns 11 extend through terminal mountll-g lnsulators 13 and have a threaded connector head 14 ln whlch the length of the cable may be adJusted and ~et prlor to ~olderlng.
The opposite end portlon o~ the plns 11 are formed wlth a circllp groove for a clrcllp 15 whlch ls secur~d ln place after the pins have ~een pas~ed through the loc~tlng ap~rtures 16 ln the tormlnal mountlng lnsulators 13.
Sultably one end of r~spectl~e double ended female connector~
26 p~s~e~ lnto the open end 27 of each lnsulator to m~ke the contact with the protruding accesslble pln 11. Boltlng flanges ~8 are providod for securln~ the coupling.
The ln~u~ators 1~ are provlded with a shallow external flange 17 about thelr out~r end whereby the~ may be held captive betwoen a collar 18 on the lnside face of each termlnatlon recess 19 ln th~ ~nd cage a6sembly 20 and the adJolnlng end of the hou~lng 21, a~ lllu~trated in Fig. 3.
The c~llndrlcal termln~tlon recesses 19 and the complementary pa~sagsways 22 ln the houslng 21 e~tend co-axlally snd are di~po~ed in a cloverleaf conflguration symmetrloally about a longltudlnal axls of the cable cou~llng moana 10. Typlcally, the end cag~ a~mbly 20 is supplied through-~olted to th~ housll~g 21 with cap ~cr~w~ 23 wlth th~
termlnql mountlng ln~ulator~ 13 secur~d thereb~tw~en The S c~ble ond ~s~e~bly 30 1~ Earmed ln thr~e parto comp~l~ing a rubber gl~nd fittlng 31, an end cap 32 and a clamp~ng ring a~sembly 33. All theee coMpononts can be fltted alldably over the c~ble 12 80 ~h~ the~ mo~ be push~d ~long the c~ble away rrOm tho made off ~nd~ of tho conductors 25.
10The m~de off end~ ur~ secured ln re~p~ctlvo termln~l plns 11 after the cahle 19 strlD~ed of it~ outor she~ths and ~h~ etre~ rell~vin~ 1~ done ln thc crutch ln oonvention~l m~nner 1~ ~he form of wrapplng tape and coro ~ackers 40 provla~a at t~eir ents~ance ~o the hou~lng 21 ln order to 15malntaln the cables Wlthlll the houslng ex~endlng sub~tantially p~rallel to lt9 longl~udl~al axi~.
A~ter th~ cabl~ cor~ h~v~ be~n ma~e off and conn~c~ed to the plns 11, thc conductor~ may b~ ~d through th~
r~pectlve p~agQway~ 22 ln the houslng 11 with the l~adlng
2~ portionJ of tho pln-~ 11 pa~slng through the locatlng r~c~
16 ln tho terminal ~ounting lnsulatora 13. Th~re~fter the clrclipo :m~y bo fltted in the groovo~ to socure the plns ln ths lnouletor~ 13. Tho end cap 32 ma~ then bo slld ~long the housin~ forclng the yl~nd ~ittlng thoren~ong untll lt may be 25 ~ecured to the rear end of thc hou~lng 21 b~ ~urther cnp ~crews 35 ~as~lng through th~ end ~lange at the rear of the hOUQ1ng 21.
The gland flttlng 31 ls then expanded by pulllng lt up tlght agaln~t the rear face 37 of the end cap 32 uslng cap screw~ 36 whlch engage thre~dedly with the lnnermost one of a palr o~ steel rlngs 3B di~po~ed at opposlte sides of the rubber grommet portlon 39. Thls actlon causes the rubber grommst portlon to expand inwardly lnto flrm engage~ent wlth th~ outer sheath of the cable.
The end cap 32 18 al80 provlded wlth an aperture closed by a flller plug in whlch convent~onal 8ettable materlal may be lntroduced lnto the ~ousl.ng to encap~ulate the component~
held theraln. A rubber boot 42 19 provlded for closing the houslng ~nd spllt clamp whlch 1~ also screwed to the end of the houslng to further secure the eable 1~ ln place.
Ths alternate form of cable end as~embly lllustrated ln Flg. 8 provldes an open houslng 45 to whlch an cap 46 ls bolted and whic~ la formed wlth a conlcal end face 47 against whlch th~ armourlng shesth 4B may be captured by a holdlng rlng 49 whlch i~ located on studs which extend rearwardly fro~ the houYing 45 through the flange 49 of th~ cap 46.
Securlng nuts on these studs may be ussd to draw the rlng 49 towards the conical face 47 and thu~ clamp the armourlng of the cable to the cable end assembly.
An alternate arran~e~ent 1B illustrated in Flg. 9 wherein the end cap assembly 50 is constltu~ed by a ~ouldlng formed ln-~ltu encapsulating the cable end 51 and the splayed CA 02232072 l998-03-l3 armourlng 52. Sultably ~he encapsulatlon 19 ~ormed by lnJ ecting a settable re91n lnto a relatlvely llght welght pla~tlcs moulding a~ 9hown ln dotted outllne at 53. This mouldlng extends about a ~upportlng rlng 54 whlch may be bolted to the housing 55. Prlor to encapsulstion, earth straps may ~e arranged to connect the Armour to the hou~lng 55.
In the embodllnent9 60, 61 and 62 lllustrated ln FIGS. lO
to 13, and FIGS. 14 ~nd 15 the component~ mostly correspond to the embodlments de9crl~ed wlth reference to ln Flg~. 1 to 6 and Flg. ~ re~pectively. For ease of refer3nce correspondlng parts are glven slmllar reference numerals.
~owever ln both of these embodlMent~ the end cage 20a 19 formed lnte~rally wlth the housing 21a and suitably of alumlnlum to minlmlse welght.
The inslde face of each termlnetlon rece~s l9a ls formed wlth an lnwardly protrudlng collar 63 whlch provide6 a stop for the external collars 18a on the ln~ulators 13a whlch are lnserted through the front openlng of the recesses l9a.
The front face 64 of the end cage 20a 18 recessed to recelve a flush fltted ap~rtured retalnln~ plate 65 secured by cap screws a~ lllustrated. The aperture~ 66 ln the plate 65 each have B stepped lnternal ~ace 67 whlch flt~ closely over the end recess 68 formed ln the lnsulators 13a whereby ~5 the plate 65 ef~ects a clamp on the insulator~ 13a ~etween the colla~ 63 and the ~tep 68.
It wlll of course be reallsed that the above has been glven by way of lllustratlve example of the lnvention and that all such modiflcatlons and variation~ thereto a~ would be apparent to persons ~killed ln the art are deemed to fall S within th~ broad scope and am~lt of the lnventlon as 19 deflned ln the appended claims.
16 ln tho terminal ~ounting lnsulatora 13. Th~re~fter the clrclipo :m~y bo fltted in the groovo~ to socure the plns ln ths lnouletor~ 13. Tho end cap 32 ma~ then bo slld ~long the housin~ forclng the yl~nd ~ittlng thoren~ong untll lt may be 25 ~ecured to the rear end of thc hou~lng 21 b~ ~urther cnp ~crews 35 ~as~lng through th~ end ~lange at the rear of the hOUQ1ng 21.
The gland flttlng 31 ls then expanded by pulllng lt up tlght agaln~t the rear face 37 of the end cap 32 uslng cap screw~ 36 whlch engage thre~dedly with the lnnermost one of a palr o~ steel rlngs 3B di~po~ed at opposlte sides of the rubber grommet portlon 39. Thls actlon causes the rubber grommst portlon to expand inwardly lnto flrm engage~ent wlth th~ outer sheath of the cable.
The end cap 32 18 al80 provlded wlth an aperture closed by a flller plug in whlch convent~onal 8ettable materlal may be lntroduced lnto the ~ousl.ng to encap~ulate the component~
held theraln. A rubber boot 42 19 provlded for closing the houslng ~nd spllt clamp whlch 1~ also screwed to the end of the houslng to further secure the eable 1~ ln place.
Ths alternate form of cable end as~embly lllustrated ln Flg. 8 provldes an open houslng 45 to whlch an cap 46 ls bolted and whic~ la formed wlth a conlcal end face 47 against whlch th~ armourlng shesth 4B may be captured by a holdlng rlng 49 whlch i~ located on studs which extend rearwardly fro~ the houYing 45 through the flange 49 of th~ cap 46.
Securlng nuts on these studs may be ussd to draw the rlng 49 towards the conical face 47 and thu~ clamp the armourlng of the cable to the cable end assembly.
An alternate arran~e~ent 1B illustrated in Flg. 9 wherein the end cap assembly 50 is constltu~ed by a ~ouldlng formed ln-~ltu encapsulating the cable end 51 and the splayed CA 02232072 l998-03-l3 armourlng 52. Sultably ~he encapsulatlon 19 ~ormed by lnJ ecting a settable re91n lnto a relatlvely llght welght pla~tlcs moulding a~ 9hown ln dotted outllne at 53. This mouldlng extends about a ~upportlng rlng 54 whlch may be bolted to the housing 55. Prlor to encapsulstion, earth straps may ~e arranged to connect the Armour to the hou~lng 55.
In the embodllnent9 60, 61 and 62 lllustrated ln FIGS. lO
to 13, and FIGS. 14 ~nd 15 the component~ mostly correspond to the embodlments de9crl~ed wlth reference to ln Flg~. 1 to 6 and Flg. ~ re~pectively. For ease of refer3nce correspondlng parts are glven slmllar reference numerals.
~owever ln both of these embodlMent~ the end cage 20a 19 formed lnte~rally wlth the housing 21a and suitably of alumlnlum to minlmlse welght.
The inslde face of each termlnetlon rece~s l9a ls formed wlth an lnwardly protrudlng collar 63 whlch provide6 a stop for the external collars 18a on the ln~ulators 13a whlch are lnserted through the front openlng of the recesses l9a.
The front face 64 of the end cage 20a 18 recessed to recelve a flush fltted ap~rtured retalnln~ plate 65 secured by cap screws a~ lllustrated. The aperture~ 66 ln the plate 65 each have B stepped lnternal ~ace 67 whlch flt~ closely over the end recess 68 formed ln the lnsulators 13a whereby ~5 the plate 65 ef~ects a clamp on the insulator~ 13a ~etween the colla~ 63 and the ~tep 68.
It wlll of course be reallsed that the above has been glven by way of lllustratlve example of the lnvention and that all such modiflcatlons and variation~ thereto a~ would be apparent to persons ~killed ln the art are deemed to fall S within th~ broad scope and am~lt of the lnventlon as 19 deflned ln the appended claims.
Claims (6)
1. Cable coupling means for a multi core electrical cable including:-an end cage assembly having a front mounting face;
a plurality of electrical termination recesses extending through the end cage assembly from the mounting face and arranged symmetrically about a longitudinal cable coupling axis;
terminal mounting insulators engageable captively in respective said electrical termination recesses and able to receive and support terminal pins to which the respective cable cores are connected;
a housing portion extending rearwardly from the end cage assembly and having a plurality of cylindrical passageways extending therethrough and arranged symmetrically about said longitudinal axis, the passageways corresponding to the electrical termination recesses in said end cage assembly, and a cable end assembly connectable to the rear end of said housing portion for captively supporting the electrical cable coaxially with the longitudinal axis of said housing portion.
a plurality of electrical termination recesses extending through the end cage assembly from the mounting face and arranged symmetrically about a longitudinal cable coupling axis;
terminal mounting insulators engageable captively in respective said electrical termination recesses and able to receive and support terminal pins to which the respective cable cores are connected;
a housing portion extending rearwardly from the end cage assembly and having a plurality of cylindrical passageways extending therethrough and arranged symmetrically about said longitudinal axis, the passageways corresponding to the electrical termination recesses in said end cage assembly, and a cable end assembly connectable to the rear end of said housing portion for captively supporting the electrical cable coaxially with the longitudinal axis of said housing portion.
2. Cable coupling means as claimed in claim 1, wherein the end cage assembly provides three symmetrically arranged electric termination and includes a flanged front end portion and a rear extension portion of complementary internal and external cloverleaf-sections.
3. Cable coupling means as claimed in claim 2, wherein the rearward extension of the end cage assembly is relatively short and accommodates only a leading portion of the terminal mounting insulators and the housing portion is detachably secured to the end cage assembly and is adapted to clamp the terminal mounting insulators into said end cage assembly.
4. Cable coupling means as claimed in claim 2, wherein the end cage assembly and the housing portion are formed integrally and the terminal mounting insulators are held captive in the end cage assembly by retaining means engaged within the front face of the end cage assembly.
5. Cable coupling means as claimed in any one of the preceding claims, wherein the cable end assembly is removably secured to the housing portion and upon release therefrom is able to be slid along the cable.
6. Cable coupling means as claimed in any one of the preceding claims and including terminal pins adjustably securable to respective cable cores and retained between opposite ends of a retaining passage in each said terminal mounting insulators by a circlip at the leading end of said retaining passage.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AUPO5639A AUPO563997A0 (en) | 1997-03-13 | 1997-03-13 | Cable coupler |
| AUPO5639 | 1997-03-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2232072A1 true CA2232072A1 (en) | 1998-09-13 |
Family
ID=3799942
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2232072 Abandoned CA2232072A1 (en) | 1997-03-13 | 1998-03-13 | Cable couplers |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AUPO563997A0 (en) |
| CA (1) | CA2232072A1 (en) |
| ZA (1) | ZA982116B (en) |
-
1997
- 1997-03-13 AU AUPO5639A patent/AUPO563997A0/en not_active Abandoned
-
1998
- 1998-03-12 ZA ZA982116A patent/ZA982116B/en unknown
- 1998-03-13 CA CA 2232072 patent/CA2232072A1/en not_active Abandoned
Also Published As
| Publication number | Publication date |
|---|---|
| ZA982116B (en) | 1998-09-14 |
| AUPO563997A0 (en) | 1997-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Dead |