CA1278836C - Connector with external protection interconnecting two insulated electric cables - Google Patents
Connector with external protection interconnecting two insulated electric cablesInfo
- Publication number
- CA1278836C CA1278836C CA000538722A CA538722A CA1278836C CA 1278836 C CA1278836 C CA 1278836C CA 000538722 A CA000538722 A CA 000538722A CA 538722 A CA538722 A CA 538722A CA 1278836 C CA1278836 C CA 1278836C
- Authority
- CA
- Canada
- Prior art keywords
- tubular
- protective
- cables
- caps
- insulation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 67
- 238000009413 insulation Methods 0.000 claims abstract description 24
- 239000004020 conductor Substances 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 10
- 230000002093 peripheral effect Effects 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims description 8
- 239000012858 resilient material Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims 2
- 229920001971 elastomer Polymers 0.000 description 4
- 239000000806 elastomer Substances 0.000 description 4
- 239000013521 mastic Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000007767 bonding agent Substances 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002674 ointment Substances 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
Landscapes
- Cable Accessories (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A connector for interconnecting a pair of insulated electric cables with a peripheral conducting screen and a protective sheath over the screen. The connector includes a body of insulation with tapered ends and with internal and external semiconductive layers. The external semiconductive layer is covered with a conductive material, such as a metal braid or ribbon, which extends beyond the ends of the body and is connected at its ends to the screens of the cables. An insulating protective tube with flanges at its ends, covers most of the body and the conductive material thereon. A pair of tubular caps have a snap e it at one end thereof with the flanges on the protective tube and extend, at their other ends over the respective cable sheaths. Also, a preassembled body for covering the connection between the conductors of a pair of such cables.
A connector for interconnecting a pair of insulated electric cables with a peripheral conducting screen and a protective sheath over the screen. The connector includes a body of insulation with tapered ends and with internal and external semiconductive layers. The external semiconductive layer is covered with a conductive material, such as a metal braid or ribbon, which extends beyond the ends of the body and is connected at its ends to the screens of the cables. An insulating protective tube with flanges at its ends, covers most of the body and the conductive material thereon. A pair of tubular caps have a snap e it at one end thereof with the flanges on the protective tube and extend, at their other ends over the respective cable sheaths. Also, a preassembled body for covering the connection between the conductors of a pair of such cables.
Description
~2'7~3~3~
CONNECTOR WITH EXTERNAL PROT~CTION INTEP~CONNECTING
TWO INSULATED ELECTRIC CABLES
The inven-tion relates to a connector Eor connecting together two insulated electric cables, particularly the medium voltage cables,and which includes improved means for the external protection of the junction.
A connector Eor connecting together two insulated electric cables includes, in a way known ~r se, means Eor connecting together the conducting cores oE the cables, means for connecting together their respective insulating layers and possibly means Eor connecting together their conducting screens when these cables possess them.
One of the problems raised by the use Oe such a device is providing an overall protection thereof so as to obtain sealing of the junction between cables, and if they are provided, the mechanical protection of the means connecting together the conducting screens. Since the diameter oE the junction is substantially larger than that of the cables, it is diEficult to provide a one piece protection sleeve which can be Eirmly applied both to the junction and to the cables.
In accordance with the known techniques, an independent protection and sealing is thereeore provided Eor the ends of the cables, and possibly a complementary protection oE the junction is provided which is a time wasting, costly operation and which correspondingly increases the risks oE Eailure.
Another problem raised is the accurate positioning oE the protection sleeves on the junction. At the present time, these sleeves are mounted manually and in an approximative way on the junction.
One of the objects oE the invention is to provide a connector Eor connecting together two insulated electric cables, , in which the means for the external protection of the junction is assembled together in a simple manner and provides continuity o-the protection Erom the end to be connected o-f one o~ the cables to the end of the other cable Another object oE the invention is to provide a junction body eor connecting together two insulated electric cables which allows such a protection to be readily obtained and which provides the accurate positioning thereo-f.
In accordance with the invention, a connector Eor connecting together two insulated electric cables, each having at least one conducting core, a layer for insulating this core, a peripheral conducting screen and a protective sheath Eor this conducting screen, includes means for connecting said conducting cores together, means for connecting said insulating layers together and means Eor connecting said conducting screens together and is characterized in that it further includes an envelope eor protecting said means for connecting the conducting screens together as well as two protective caps which are Eitted respectively at the ends of the two cables and which are sealingl~ applied to said protective sheaths, said protective envelope and said protective caps including sealed mutual snap fit means.
~ dvantageously, said protective envelope and said protective caps are made Erom a resilient material and are force fit-ted, respectively, on said means Eor connecting the conducting screens together and on said protective sheaths.
In a preEerred embodiment, said snap e it means includes a peripheral groove on the protective caps and a peripheral e lange on the protective envelope which is housed in said peripheral groove.
~ s an aid, the means for connecting said conducting screens together may include a metal braid which surrounds said means Eor ~7~6 67487-3~7 connecting the insula~ing layers together and whose ends are turned back on these connecting means so as to be held between them and said protective envelope.
Furthermore, each said protective cap may include an opening formed in its lateral wall, the surface defining said opening being sealingly applied to a ground conductor which passes through said opening and which is connected to the conductincJ screen of the corresponding cable.
The invention also relates to a junction body for connecting together two insulated electric cables characterized in that it includes a cover having at least one insulating layer, a conducting screen surrounding said cover and extending from both ends thereof, and a protective envelope which covers said conducting screen except for the ends thereof and which has on its outer surface and at both its end snap fit sealing means for the protective caps.
Preferabl~i, said protective envelope is made ~rom a resilient material and is force fitted on said conducting screen.
Advantageously, said conducting screen includes a metal braid whose two ends are bent back on said cover and are held between it and said protective envelope.
The cover may include an insulating layer interposed between two semiconducting layers.
According to a broad aspect of the invention there is provided a junction between electric cables, comprising: two electric cables, each cable comprising at least one conducting core, insulation around the core, a conducting screen around the insulation and a protective sheath around said conducting screen, and a connector interconnecting said cables, said ~8~3~ 67487-347 connector including: first conduc~ive means conductively interconnecti.ng the core of one of said cables with the core o~
the other of said cables; insulation means around said conductive means and extending from the insulation of one of said cables to the insulation of the other of said cables;
second conductive means around saicl insulation means and conductively interconnecting the conducting screen of one of said cables with the conducting screen of the other of said cables; a protective tubular envelope of insulation around sald second conductive means; and a pair of tubular caps of insulation, one of said tubular caps extending around the protective sheath of one of said cables and to one end of said protective tubular envelope and the other o~ said tubular caps extending around the protective sheath of the other of said cables and to the other end o~ said protective tubular envelope, said tubular caps and said protective tubular envelope having snap fit means at their adjacent ends for seallny and mechanically interconnecting said tubular caps with said protective tubular envelope.
According to another broad aspect of the invention there is provided a ~unction body for use in forminy a junction between a pair of electric cables, said body comprising: a tubular body of insulation having at least a layer of insula~ion; a conductive screen around said tubular body, said conductive screen haviny an axial lenyth greater than the axial lencJth of said tubular body; a protective tubular envelope of insulation around and coveriny said conductive screen except for portions thereof at axially opposite ends thereof, said protective tubular envelope having cap engaging portions at its axially opposite ends of a diameter different from the portions 3a 3`~
of said envelope adjacent to said cap engaging portions.
Other objects and advantages of the present invention will be apparent from the following detailed description of the presently preferred embodiments thereof, which description sllould be considered in conjunction with the accompanying drawings in which:
Fig. 1 is a longitudinal sectional vlew of a junction body of the invention;
Fig. 2 is a half view, in partial longitudinal section of a cable junction device using the junction 3b 8:3 ~
body oE Fig. 1.
The junction body oE Fig. 1 includes a cover 1 which is formed, in a way known ~_r se, oE a main insulating layer 2 interposed be-tween an internal semiconducting layer 3 and an external semiconducting layer 4. The cover 1 is in the Eorm oE a circular tube the two ends 5, 6 o which have an external tapered shape so as to have a progressively reduced section.
~ metal screen, in the form oE a tubular braid 7, covers externally the cover 1 and extends beyond the ends 5, 6 o the cover. However, the braid 7 is bent back on the cover 1, so that its ends 8, 9 bear on the tapered ends 5, 6 oE this cover.
A protective envelope in the Eorm oE a protective elastomer tube 10 overlies the cover 1 and the braid 7 and is force Eitted thereon so as to maintain braid 7 in position on the cover 1.
The protective tube 10 does not extend over the whole length oE
cover 1. The ends 11, 12 o-E the tube 10 are situated in line with a median zone oE the tapering ends 5, 6 of cover 1. Each ' end 11, 12 oE the protective tube 10 includes a circular Elange 13, 1~ extending radially outwardly.
In a variant oE the embodiment shown in Fig. 1, the metal screen 7 may be Eormed by a metal ribbon. The protective tube 10 is generally resilient, thermoshrinkable or mechanically retractable. It may, however, be made Erom a rigid material such as a rigid plastic material iE it is applied by molding.
Preferably, the junction body oE Fig. 1 is preassembled in the Eactory beEore being used on the site. The protective elastomer tube 10 of Fig. 1 is, Eor example, mounted on cover 1 by means oE a cylindrical vacuum tube. AEter introducing the protective tube 10 in this tube, a vacuum is formed so as to cause expansion oE the tube 10. Then, the cover 1 with the braid 7 is disposed inside the protective tube 10, and then, the vacuum is released which causes retraction oE the tube 10 on the braid 7 and the cover 1.
In a simpler assembly method, a lubricating bonding agent is applied to the outer surface o cover 1 and the braid 7, and the protective elastomer tube 10 is slid onto cover 1 and the braid 7 structure.
It will be noted that braid 7 and the protective tube 10 may thus be accurately positioned usiny mechanical means, which will facilitate assembly of the junction device on the site.
Fig. 2 shows a junction device of the invention which includes the junction body oE Fig. 1 covering a symmetrical junction between two cables, only one, 20, of which is visible in this Fig. The description of the junction will therefore be limited to the part visible in Fig. 2, this description also applying to the symme-trical part not shown.
In a way known per se, the core 21 of the cable 20 is joined to that of the other cable by means o a connecting sleeve 22.
An insulated grounding conductor 23 is connected to the metal screen of cable 20.
The junction body, which includes the internal semiconducting layer 3, the insulating layer 2, the external semiconducting layer 4, braid 7 and the protective tube 10, covers most of the junction but not the grounding conductor 23.
The insulating layer 2 and the semiconducting layers 3 and 4 of the junction body are, in a way known ~er se, engaged with the corresponding layers of the cable 20, with the interpositioning, in this example, oE an elastomeric semiconductive split tube 24 and a tube 25 of elastomeric insulation Eor matching the inner diameter of the junction hody to the outer diameter oE cable 20.
The braid 7 is connected to the metal screen oE cable 20 by means oE a collar 26. A protective cap in the form oE a tubular cap 27 covers the end o-E cable 20 and the tapered end 5 of the junction body. The tubular cap 27 i5 made from elastomer. It has 3~
itselE a widened tapered end which includes a circular Eillet 31 inside which is Eormed a circular groove 28. Groove 28 snap fits sealingly onto the circular Elange 13 of the protective tube 10 of the junction body. The other end oE the tubular cap 27 is applied to the sheath oE the cable 20 with interpositioning oE a sealing mastic 30. The ground conductor 23 extends laterally Erom the tubular cap 27, passes through a tubular projection 33 on the cap and extends outwardly thereoE. The inner surface o this tubular projection 33 is applied sealingly to the ground conductor 23.
In a simplified embodiment, the sealing mastic 30 may be omitted, the tubular cap 27 being ~orce Eitted to the sheath oE
the cable 20 and itselE providing sealing.
During assembly of the junction on the work site, the junction body, preferably assembled in the factory, and the tube 2S are slid over one of the cables, e.g. the cable 20, after the tubular cap 27 has itself been positioned on the cable. A tubular cap, like the cap 27, is also placed on the other cablen AEter connection of the cores Oe the cables with the sleeve 22, the split tube 24 is placed over the sleeve 22, and the tube 2S is slid into the position shown in Fig. 2. The junction body is then brought over the junction, and the tubular caps are then engaged in their turn and snap Eit on the protective tube 10 oE
the junction body. IE the sealing mastic 30 is used, it is applied beEore the tubular caps are positioned.
The relative positioning oE the diEEerent components o the junction is controlled by the coniguration o the componentsO
The braid 7 and the protective tube 10 are already mounted on the cover 1 and are, therefore, properly positioned. As for the tubular caps, they are positioned accurately by means of the e langes 13, 14 of the cover 1 over which they snap fit.
From one end oE one cable to the end o the other cable, the protection Eormed by the two tubular caps 27 and by the protective tube 1 is continuous.
It will be apparent that the mutual snap Eit means between the tubular caps 27 and protective tube 10 is not limited to the speciEic form described and may assume difEerent forms provided that the connection obtained is sealed over the whole periphery oE the junction.
The invention Einds its application more particularly in the construction of underground electric cable junctions, at medium voltage.
Although preferred embodiments oE the present invention have been described and illustrated, it will be apparent to those skilled in the art that various modiEications may be made without departing from the principles of the invention.
CONNECTOR WITH EXTERNAL PROT~CTION INTEP~CONNECTING
TWO INSULATED ELECTRIC CABLES
The inven-tion relates to a connector Eor connecting together two insulated electric cables, particularly the medium voltage cables,and which includes improved means for the external protection of the junction.
A connector Eor connecting together two insulated electric cables includes, in a way known ~r se, means Eor connecting together the conducting cores oE the cables, means for connecting together their respective insulating layers and possibly means Eor connecting together their conducting screens when these cables possess them.
One of the problems raised by the use Oe such a device is providing an overall protection thereof so as to obtain sealing of the junction between cables, and if they are provided, the mechanical protection of the means connecting together the conducting screens. Since the diameter oE the junction is substantially larger than that of the cables, it is diEficult to provide a one piece protection sleeve which can be Eirmly applied both to the junction and to the cables.
In accordance with the known techniques, an independent protection and sealing is thereeore provided Eor the ends of the cables, and possibly a complementary protection oE the junction is provided which is a time wasting, costly operation and which correspondingly increases the risks oE Eailure.
Another problem raised is the accurate positioning oE the protection sleeves on the junction. At the present time, these sleeves are mounted manually and in an approximative way on the junction.
One of the objects oE the invention is to provide a connector Eor connecting together two insulated electric cables, , in which the means for the external protection of the junction is assembled together in a simple manner and provides continuity o-the protection Erom the end to be connected o-f one o~ the cables to the end of the other cable Another object oE the invention is to provide a junction body eor connecting together two insulated electric cables which allows such a protection to be readily obtained and which provides the accurate positioning thereo-f.
In accordance with the invention, a connector Eor connecting together two insulated electric cables, each having at least one conducting core, a layer for insulating this core, a peripheral conducting screen and a protective sheath Eor this conducting screen, includes means for connecting said conducting cores together, means for connecting said insulating layers together and means Eor connecting said conducting screens together and is characterized in that it further includes an envelope eor protecting said means for connecting the conducting screens together as well as two protective caps which are Eitted respectively at the ends of the two cables and which are sealingl~ applied to said protective sheaths, said protective envelope and said protective caps including sealed mutual snap fit means.
~ dvantageously, said protective envelope and said protective caps are made Erom a resilient material and are force fit-ted, respectively, on said means Eor connecting the conducting screens together and on said protective sheaths.
In a preEerred embodiment, said snap e it means includes a peripheral groove on the protective caps and a peripheral e lange on the protective envelope which is housed in said peripheral groove.
~ s an aid, the means for connecting said conducting screens together may include a metal braid which surrounds said means Eor ~7~6 67487-3~7 connecting the insula~ing layers together and whose ends are turned back on these connecting means so as to be held between them and said protective envelope.
Furthermore, each said protective cap may include an opening formed in its lateral wall, the surface defining said opening being sealingly applied to a ground conductor which passes through said opening and which is connected to the conductincJ screen of the corresponding cable.
The invention also relates to a junction body for connecting together two insulated electric cables characterized in that it includes a cover having at least one insulating layer, a conducting screen surrounding said cover and extending from both ends thereof, and a protective envelope which covers said conducting screen except for the ends thereof and which has on its outer surface and at both its end snap fit sealing means for the protective caps.
Preferabl~i, said protective envelope is made ~rom a resilient material and is force fitted on said conducting screen.
Advantageously, said conducting screen includes a metal braid whose two ends are bent back on said cover and are held between it and said protective envelope.
The cover may include an insulating layer interposed between two semiconducting layers.
According to a broad aspect of the invention there is provided a junction between electric cables, comprising: two electric cables, each cable comprising at least one conducting core, insulation around the core, a conducting screen around the insulation and a protective sheath around said conducting screen, and a connector interconnecting said cables, said ~8~3~ 67487-347 connector including: first conduc~ive means conductively interconnecti.ng the core of one of said cables with the core o~
the other of said cables; insulation means around said conductive means and extending from the insulation of one of said cables to the insulation of the other of said cables;
second conductive means around saicl insulation means and conductively interconnecting the conducting screen of one of said cables with the conducting screen of the other of said cables; a protective tubular envelope of insulation around sald second conductive means; and a pair of tubular caps of insulation, one of said tubular caps extending around the protective sheath of one of said cables and to one end of said protective tubular envelope and the other o~ said tubular caps extending around the protective sheath of the other of said cables and to the other end o~ said protective tubular envelope, said tubular caps and said protective tubular envelope having snap fit means at their adjacent ends for seallny and mechanically interconnecting said tubular caps with said protective tubular envelope.
According to another broad aspect of the invention there is provided a ~unction body for use in forminy a junction between a pair of electric cables, said body comprising: a tubular body of insulation having at least a layer of insula~ion; a conductive screen around said tubular body, said conductive screen haviny an axial lenyth greater than the axial lencJth of said tubular body; a protective tubular envelope of insulation around and coveriny said conductive screen except for portions thereof at axially opposite ends thereof, said protective tubular envelope having cap engaging portions at its axially opposite ends of a diameter different from the portions 3a 3`~
of said envelope adjacent to said cap engaging portions.
Other objects and advantages of the present invention will be apparent from the following detailed description of the presently preferred embodiments thereof, which description sllould be considered in conjunction with the accompanying drawings in which:
Fig. 1 is a longitudinal sectional vlew of a junction body of the invention;
Fig. 2 is a half view, in partial longitudinal section of a cable junction device using the junction 3b 8:3 ~
body oE Fig. 1.
The junction body oE Fig. 1 includes a cover 1 which is formed, in a way known ~_r se, oE a main insulating layer 2 interposed be-tween an internal semiconducting layer 3 and an external semiconducting layer 4. The cover 1 is in the Eorm oE a circular tube the two ends 5, 6 o which have an external tapered shape so as to have a progressively reduced section.
~ metal screen, in the form oE a tubular braid 7, covers externally the cover 1 and extends beyond the ends 5, 6 o the cover. However, the braid 7 is bent back on the cover 1, so that its ends 8, 9 bear on the tapered ends 5, 6 oE this cover.
A protective envelope in the Eorm oE a protective elastomer tube 10 overlies the cover 1 and the braid 7 and is force Eitted thereon so as to maintain braid 7 in position on the cover 1.
The protective tube 10 does not extend over the whole length oE
cover 1. The ends 11, 12 o-E the tube 10 are situated in line with a median zone oE the tapering ends 5, 6 of cover 1. Each ' end 11, 12 oE the protective tube 10 includes a circular Elange 13, 1~ extending radially outwardly.
In a variant oE the embodiment shown in Fig. 1, the metal screen 7 may be Eormed by a metal ribbon. The protective tube 10 is generally resilient, thermoshrinkable or mechanically retractable. It may, however, be made Erom a rigid material such as a rigid plastic material iE it is applied by molding.
Preferably, the junction body oE Fig. 1 is preassembled in the Eactory beEore being used on the site. The protective elastomer tube 10 of Fig. 1 is, Eor example, mounted on cover 1 by means oE a cylindrical vacuum tube. AEter introducing the protective tube 10 in this tube, a vacuum is formed so as to cause expansion oE the tube 10. Then, the cover 1 with the braid 7 is disposed inside the protective tube 10, and then, the vacuum is released which causes retraction oE the tube 10 on the braid 7 and the cover 1.
In a simpler assembly method, a lubricating bonding agent is applied to the outer surface o cover 1 and the braid 7, and the protective elastomer tube 10 is slid onto cover 1 and the braid 7 structure.
It will be noted that braid 7 and the protective tube 10 may thus be accurately positioned usiny mechanical means, which will facilitate assembly of the junction device on the site.
Fig. 2 shows a junction device of the invention which includes the junction body oE Fig. 1 covering a symmetrical junction between two cables, only one, 20, of which is visible in this Fig. The description of the junction will therefore be limited to the part visible in Fig. 2, this description also applying to the symme-trical part not shown.
In a way known per se, the core 21 of the cable 20 is joined to that of the other cable by means o a connecting sleeve 22.
An insulated grounding conductor 23 is connected to the metal screen of cable 20.
The junction body, which includes the internal semiconducting layer 3, the insulating layer 2, the external semiconducting layer 4, braid 7 and the protective tube 10, covers most of the junction but not the grounding conductor 23.
The insulating layer 2 and the semiconducting layers 3 and 4 of the junction body are, in a way known ~er se, engaged with the corresponding layers of the cable 20, with the interpositioning, in this example, oE an elastomeric semiconductive split tube 24 and a tube 25 of elastomeric insulation Eor matching the inner diameter of the junction hody to the outer diameter oE cable 20.
The braid 7 is connected to the metal screen oE cable 20 by means oE a collar 26. A protective cap in the form oE a tubular cap 27 covers the end o-E cable 20 and the tapered end 5 of the junction body. The tubular cap 27 i5 made from elastomer. It has 3~
itselE a widened tapered end which includes a circular Eillet 31 inside which is Eormed a circular groove 28. Groove 28 snap fits sealingly onto the circular Elange 13 of the protective tube 10 of the junction body. The other end oE the tubular cap 27 is applied to the sheath oE the cable 20 with interpositioning oE a sealing mastic 30. The ground conductor 23 extends laterally Erom the tubular cap 27, passes through a tubular projection 33 on the cap and extends outwardly thereoE. The inner surface o this tubular projection 33 is applied sealingly to the ground conductor 23.
In a simplified embodiment, the sealing mastic 30 may be omitted, the tubular cap 27 being ~orce Eitted to the sheath oE
the cable 20 and itselE providing sealing.
During assembly of the junction on the work site, the junction body, preferably assembled in the factory, and the tube 2S are slid over one of the cables, e.g. the cable 20, after the tubular cap 27 has itself been positioned on the cable. A tubular cap, like the cap 27, is also placed on the other cablen AEter connection of the cores Oe the cables with the sleeve 22, the split tube 24 is placed over the sleeve 22, and the tube 2S is slid into the position shown in Fig. 2. The junction body is then brought over the junction, and the tubular caps are then engaged in their turn and snap Eit on the protective tube 10 oE
the junction body. IE the sealing mastic 30 is used, it is applied beEore the tubular caps are positioned.
The relative positioning oE the diEEerent components o the junction is controlled by the coniguration o the componentsO
The braid 7 and the protective tube 10 are already mounted on the cover 1 and are, therefore, properly positioned. As for the tubular caps, they are positioned accurately by means of the e langes 13, 14 of the cover 1 over which they snap fit.
From one end oE one cable to the end o the other cable, the protection Eormed by the two tubular caps 27 and by the protective tube 1 is continuous.
It will be apparent that the mutual snap Eit means between the tubular caps 27 and protective tube 10 is not limited to the speciEic form described and may assume difEerent forms provided that the connection obtained is sealed over the whole periphery oE the junction.
The invention Einds its application more particularly in the construction of underground electric cable junctions, at medium voltage.
Although preferred embodiments oE the present invention have been described and illustrated, it will be apparent to those skilled in the art that various modiEications may be made without departing from the principles of the invention.
Claims (9)
1. A junction between electric cables, comprising: two electric cables, each cable comprising at least one conducting core, insulation around the core, a conducting screen around the insulation and a protective sheath around said conducting screen, and a connector interconnecting said cables, said connector including:
first conductive means conductively interconnecting the core of one of said cables with the core of the other of said cables;
insulation means around said conductive means and extending from the insulation of one of said cables to the insulation of the other of said cables;
second conductive means around said insulation means and conductively interconnecting the conducting screen of one of said cables with the conducting screen of the other of said cables;
a protective tubular envelope of insulation around said second conductive means; and a pair of tubular caps of insulation, one of said tubular caps extending around the protective sheath of one of said cables and to one end of said protective tubular envelope and the other of said tubular caps extending around the protective sheath of the other of said cables and to the other end of said protective tubular envelope, said tubular caps and said protective tubular envelope having snap fit means at their adjacent ends for sealing and mechanically interconnecting said tubular caps with said protective tubular envelope.
first conductive means conductively interconnecting the core of one of said cables with the core of the other of said cables;
insulation means around said conductive means and extending from the insulation of one of said cables to the insulation of the other of said cables;
second conductive means around said insulation means and conductively interconnecting the conducting screen of one of said cables with the conducting screen of the other of said cables;
a protective tubular envelope of insulation around said second conductive means; and a pair of tubular caps of insulation, one of said tubular caps extending around the protective sheath of one of said cables and to one end of said protective tubular envelope and the other of said tubular caps extending around the protective sheath of the other of said cables and to the other end of said protective tubular envelope, said tubular caps and said protective tubular envelope having snap fit means at their adjacent ends for sealing and mechanically interconnecting said tubular caps with said protective tubular envelope.
2. A junction as set forth in claim 1 wherein said protective tubular envelope and said tubular caps are made of resilient material, said protective tubular envelope is stretched around said second conductive means and said tubular caps are stretched around the respective protective sheaths, whereby said protective tubular envelope presses against said second conductive means and said tubular caps press against the respective protective sheaths.
3. A junction as set forth in claim 1 wherein said snap fit means comprises a peripheral flange on one of said tubular caps and said protective tubular envelope and a peripheral groove on the other of said tubular caps and said protective tubular envelopes receiving said peripheral flange.
4. A junction as set forth in claim 1 wherein said second conductive means is a tubular metal braid with the ends thereof bent back upon a portion of the braid and disposed intermediate said protective tubular envelope and said insulation means.
5. A junction as set forth in claim 1 further comprising a pair of conductors, one of said conductors extending through and engaging the sidewall of one of said pair of tubular caps and conductively connected to the conducting screen of the cable within said one of said pair of tubular caps and the other of said conductors extending through and engaging the sidewall of the other of said pair of tubular caps and conductively connected to the conducting screen of the cable within said other of said pair of tubular caps.
6. A junction body for use in forming a junction between a pair of electric cables, said body comprising:
a tubular body of insulation having at least a layer of insulation;
a conductive screen around said tubular body, said conductive screen having an axial length greater than the axial length of said tubular body;
a protective tubular envelope of insulation around and covering said conductive screen except for portions thereof at axially opposite ends thereof, said protective tubular envelope having cap engaging portions at its axially opposite ends of a diameter different from the portions of said envelope adjacent to said cap engaging portions.
a tubular body of insulation having at least a layer of insulation;
a conductive screen around said tubular body, said conductive screen having an axial length greater than the axial length of said tubular body;
a protective tubular envelope of insulation around and covering said conductive screen except for portions thereof at axially opposite ends thereof, said protective tubular envelope having cap engaging portions at its axially opposite ends of a diameter different from the portions of said envelope adjacent to said cap engaging portions.
7. A junction body as set forth in claim 6 wherein said protective tubular envelope is made of a resilient material and is stretched around said conductive screen whereby said protective tubular envelope presses against said conductive screen.
8. A junction body as set forth in claim 6 wherein said conductive screen is a tubular metal braid with the ends thereof bent back upon a portion of the braid and disposed intermediate said protective tubular envelope and said tubular body.
9. A junction body as set forth in claim 6 wherein said tubular body further comprises a pair of layers of semiconductive material, one at the exterior surface thereof and one at the interior surface thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000538722A CA1278836C (en) | 1987-06-03 | 1987-06-03 | Connector with external protection interconnecting two insulated electric cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000538722A CA1278836C (en) | 1987-06-03 | 1987-06-03 | Connector with external protection interconnecting two insulated electric cables |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1278836C true CA1278836C (en) | 1991-01-08 |
Family
ID=4135812
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000538722A Expired - Lifetime CA1278836C (en) | 1987-06-03 | 1987-06-03 | Connector with external protection interconnecting two insulated electric cables |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1278836C (en) |
-
1987
- 1987-06-03 CA CA000538722A patent/CA1278836C/en not_active Expired - Lifetime
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4742184A (en) | Connector with external protection interconnecting two insulated electric cables and forming a junction therebetween | |
| US4032205A (en) | Adaptor for a high voltage cable | |
| US5821459A (en) | Power cable splice | |
| US4358634A (en) | Protective cover for use in sealed cable splices | |
| CA1119683A (en) | Joint for low and medium voltage electric cables | |
| GB1591597A (en) | Electrical connector | |
| AU617156B2 (en) | A sleeve of plastic sheet material for a cable termination, a cable splice or another cable portion freed from the cable sheet of electric cable | |
| CA1278836C (en) | Connector with external protection interconnecting two insulated electric cables | |
| US3590138A (en) | Cable branch joint | |
| CA1075785A (en) | Electrical feedthrough devices | |
| JP3140580B2 (en) | Wire terminal processing equipment | |
| US6074224A (en) | High voltage electrical coupling having outer elastic protective sleeve | |
| JP2575502Y2 (en) | Power cable heterogeneous common connection | |
| JP3224109B2 (en) | Cable connection | |
| JPH054216Y2 (en) | ||
| JP2537912Y2 (en) | Prefabricated connection for power cable | |
| JPH037891Y2 (en) | ||
| JPS6029299Y2 (en) | Edge cutting connection of rubber/plastic cable | |
| JP3315522B2 (en) | Method for forming gas-insulated intermediate connection of rubber and plastic power cables | |
| JPS5933144Y2 (en) | Cable insertion type high voltage cutout and cable connection | |
| JP3259035B2 (en) | Cable connection | |
| JPS6345742Y2 (en) | ||
| JPS6015392Y2 (en) | Solderless connection of power cable with water barrier layer | |
| JP3101036B2 (en) | Cable connection | |
| JP2532266Y2 (en) | Power cable prefabricated connection |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKLA | Lapsed |