CA1037581A - Coupling devices for co-axial cables - Google Patents
Coupling devices for co-axial cablesInfo
- Publication number
- CA1037581A CA1037581A CA231,701A CA231701A CA1037581A CA 1037581 A CA1037581 A CA 1037581A CA 231701 A CA231701 A CA 231701A CA 1037581 A CA1037581 A CA 1037581A
- Authority
- CA
- Canada
- Prior art keywords
- external casing
- insulating member
- coupling device
- screws
- protuberances
- 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
Links
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
- H01R9/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, e.g. terminal strips or terminal blocks; Terminals or binding posts mounted upon a base or in a case; Bases therefor
- H01R9/03—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections
- H01R9/05—Connectors arranged to contact a plurality of the conductors of a multiconductor cable, e.g. tapping connections for coaxial cables
- H01R9/0503—Connection between two cable ends
Landscapes
- Coupling Device And Connection With Printed Circuit (AREA)
- Communication Cables (AREA)
- Connector Housings Or Holding Contact Members (AREA)
- Installation Of Indoor Wiring (AREA)
- Cable Accessories (AREA)
Abstract
A B S T R A C T
A releasable coupling device for connecting together co-axial cable ends provided with connecting devices comprising a generally tubular external casing acting as outer conductor, each end of which is threaded for connection to said connecting device and has a metal face and resilient ring for forming a seal therewith. A
plastics insulating member is press-fitted into the external casing and includes at least two hollow internally threaded protuberances receiving screws for cooperating with an inner conductor connecting member so as to fasten the inner conductors. The external casing includes an opening with a cover for providing access to the screws.
A releasable coupling device for connecting together co-axial cable ends provided with connecting devices comprising a generally tubular external casing acting as outer conductor, each end of which is threaded for connection to said connecting device and has a metal face and resilient ring for forming a seal therewith. A
plastics insulating member is press-fitted into the external casing and includes at least two hollow internally threaded protuberances receiving screws for cooperating with an inner conductor connecting member so as to fasten the inner conductors. The external casing includes an opening with a cover for providing access to the screws.
Description
1~37S~
The invention relates to couplin~ devices for co-axial ~ cables, particularl.y co-axial high-frequency cables, ; For coupling co-axial high-frequency cables which comprise a wire-shaped internal conductor and a cylindrical `.
external conductor separated rom each other by a dielectric layer, use is commonly made of concentrically structured coupling elements. To this end, connecting devices situated on the two .~ cable extremities have already been proposed which were to be connected together by a co-axial coupling element in such manner that a connection is established which may be freed mechanically .
and thus also electrically, at any time.
A disadvantaqe of this coupling element is the number .- and complex design of the components required. It has moreover :~
been found that the clamping action of a slotted sleeve for the ~. ;
internal conductor weakens because the cones used therefor ~ ~
consist of plastics material, which tends to flow in time under ~ : :
~, the action of temperature fluctuations, so that the clamping .
.~ ~ cones can no longer comply mechanically and electrically with:
~ the require~ents for this type of cable. ~
. ~ ~ . , .
~ 20 The present invention consists in a releasable coupling~
.: , :
: device for connecting together co-axial cable ends provided with ~
connecting devices, comprising a generally tubular external ..
~ casing forming an outer conductor and being threaded at either .
.~ end for connection to the connecting devices, an insulating ~
member of plastics material press-fitted into the external casing .: .
and including at least two hollow internally threaded protuber~
-~ ances for receiving screws for fastening the cable inner con~
'~ ductors, and an inner conductor connecting member disposed withi.n the insulating member, the external casing having an openin~, for providing access to the screws, with means for ::
, closing the opening and, at each end a metal face and a ring ~ :~
of resilient material for forming a seal with a connecting.
,~, .
.:
,' ~
,i :
il 037Sl3~L
device when connected thereto.
The housing of the coupling device and the connecting devices at the cable extremities may be brought into contact ,~ , at corresponding end faces with the required contact pressure, quickly, conveniently, by means of the screw-threads~ so that an uninterrupted connection screwed against interference radi-ation is produced for the external conductor. Each of the two metal seals formed between the end faces on screwing tight, are ~';~ . .
complemented wlth a resilient ring, for instance of rubber, positioned therebetween. The internal conductor ends of the ; cable are reseived by the internal conductor connectlng member of the coupling device, which is centered in the plastics - ~`
, , j ' .
material insulating member and may be immovably cast in. At ` ~ ~ the same time, the insulating member is anchored by a press fit --~
".~;, , ~ .
~1 in the external housing. To counteract the ageing actions of the plastics material, the internal conductor extremities of the cable are screwed tight within the internal conductor con~
necting member of the coupling element, the locking or set screws being held in the protuberances of the insulating member and thus being proof against loss during assembling. The ;
screwing operation occurs vla the housing opening which may have ,, ",~ :
a screw-thread~and which may be closab~le iD gastight manner by means of a rubber-sealed~conductive screwable insert.
Preferably the inner conductor connecting memher has , ~:
an internal bore, and holes arranged to line up with the pro- `~
~'~ tuberances o~ the insulating member so as to allow passage of ; ~
the screws. ~-This results in the possibility of coupling together ~ cable types having differently dimensioned internal conductors.
i.. " 30 Also, the internal bore of the internal conductor connecting ~ ~ member may be provided with recesses opposite the holes, the ,. ..
! holes receiving the set screws from the protuberances, so that ,,.,-, . , ,., ".
i, ~
~ - 2 -~ ~A
,~ ., ~ ,, ,. -,. ;,~ ; , ~
3L~37~8~ ~
the internal conductor may be anchored firmly within the inter-nal conductor connecting member. An internal conductor of smaller diameter than of the bore of the internal conductor `-connecting member may then be securecl, as the thin internal conductor is pressed into the recess of the internal conductor connecting member whilst being screwed tight. A wide range of types of cables may thus be coupled.
It is advantageous furthermore for the relative dielectric factor of the insulating member carrying the internal conductor connecting member to be ~2.5.
The invention will be further described, by way of example with reference to the accompanying drawing, which is a side view in part section of a preferred coupling device. The coupling device comprises a cylindrical metal casing l and an insulating member 3 situated in its cavity ll, in which an internal conductor connecting member 2 is cast. The casing 1 comprises two axially aligned openings having an internal screw-thread 12 for reception of the connecting devices 13 having :
externally screw-threaded stubs. Upon screwing-in the connect- ~ ;
ing stubs 13, at each end of the casing their end faces come into contact with the respective end faces of the casing at lO, so that an uninterrupted connection is produced for the external conductor. The metal to metal seals lO are reinforced by a rubber seal in the form of a ring 9 positioned between them, so that the contact point 9, lO is gastight, damp-proof and screened~
against interference radiation. The screwing of the casing l ;
~ and connecting stub 13 may be performed more easily if both ;~ ~
- parts have a hexagonal cross-section having the same size, so ~;
as to make possible to use of a single type of tool. After -this operation, the insulation 17 of the cable 16 is inserted L'_ into the already tightly screwed connecting stub 13. By -~
tightening the locking nut 14 on the connecting device, the . i ~ '.
, . . , , . , ., ' .
~ `~
~.C337~
cable adaptor 15 of the connectinq device is coupled to the connecting stub 13. The internal conductor extremity 18 of the cable, which extends beyond -the end of the insulation 17 of the cable 16, is thus urged into -the internal conductor connecting member 2 of the coupling device which is cast in the plastics insulating member 3, the latter being accurately centred by virtue of its press fit 19, the insulating member 3 being mounted immediately prior to the forming of the internal screw-thread 12. The extremities 18 of the internal conductor of the cable are then immobilised by captive set or locking screws 5 which are installed in loss-proof m~anner in protuber-ances 4 situated in the insulating member 3 for the purpose of simplified assembling operation, these protuberances being formed at one side of the axis of the cable. A casing aperture 6, which may be closed off by means of an inwardly screwable insert 7 and sealed off by means of a sealing ring 8 provides access to the screws. The insulating member 3 has dimensions such that~ in conjunction with the internal conductor connecting member 2 of metal and the casing 1, the rated value of the char~cteristic cable impedance is established. i~
,............ .~
Various modifications may be made within the scope ~. of the inYention.
: . ' : ,., , ~ :
,' "~ ~ " ' _ . .
. '~
, .
The invention relates to couplin~ devices for co-axial ~ cables, particularl.y co-axial high-frequency cables, ; For coupling co-axial high-frequency cables which comprise a wire-shaped internal conductor and a cylindrical `.
external conductor separated rom each other by a dielectric layer, use is commonly made of concentrically structured coupling elements. To this end, connecting devices situated on the two .~ cable extremities have already been proposed which were to be connected together by a co-axial coupling element in such manner that a connection is established which may be freed mechanically .
and thus also electrically, at any time.
A disadvantaqe of this coupling element is the number .- and complex design of the components required. It has moreover :~
been found that the clamping action of a slotted sleeve for the ~. ;
internal conductor weakens because the cones used therefor ~ ~
consist of plastics material, which tends to flow in time under ~ : :
~, the action of temperature fluctuations, so that the clamping .
.~ ~ cones can no longer comply mechanically and electrically with:
~ the require~ents for this type of cable. ~
. ~ ~ . , .
~ 20 The present invention consists in a releasable coupling~
.: , :
: device for connecting together co-axial cable ends provided with ~
connecting devices, comprising a generally tubular external ..
~ casing forming an outer conductor and being threaded at either .
.~ end for connection to the connecting devices, an insulating ~
member of plastics material press-fitted into the external casing .: .
and including at least two hollow internally threaded protuber~
-~ ances for receiving screws for fastening the cable inner con~
'~ ductors, and an inner conductor connecting member disposed withi.n the insulating member, the external casing having an openin~, for providing access to the screws, with means for ::
, closing the opening and, at each end a metal face and a ring ~ :~
of resilient material for forming a seal with a connecting.
,~, .
.:
,' ~
,i :
il 037Sl3~L
device when connected thereto.
The housing of the coupling device and the connecting devices at the cable extremities may be brought into contact ,~ , at corresponding end faces with the required contact pressure, quickly, conveniently, by means of the screw-threads~ so that an uninterrupted connection screwed against interference radi-ation is produced for the external conductor. Each of the two metal seals formed between the end faces on screwing tight, are ~';~ . .
complemented wlth a resilient ring, for instance of rubber, positioned therebetween. The internal conductor ends of the ; cable are reseived by the internal conductor connectlng member of the coupling device, which is centered in the plastics - ~`
, , j ' .
material insulating member and may be immovably cast in. At ` ~ ~ the same time, the insulating member is anchored by a press fit --~
".~;, , ~ .
~1 in the external housing. To counteract the ageing actions of the plastics material, the internal conductor extremities of the cable are screwed tight within the internal conductor con~
necting member of the coupling element, the locking or set screws being held in the protuberances of the insulating member and thus being proof against loss during assembling. The ;
screwing operation occurs vla the housing opening which may have ,, ",~ :
a screw-thread~and which may be closab~le iD gastight manner by means of a rubber-sealed~conductive screwable insert.
Preferably the inner conductor connecting memher has , ~:
an internal bore, and holes arranged to line up with the pro- `~
~'~ tuberances o~ the insulating member so as to allow passage of ; ~
the screws. ~-This results in the possibility of coupling together ~ cable types having differently dimensioned internal conductors.
i.. " 30 Also, the internal bore of the internal conductor connecting ~ ~ member may be provided with recesses opposite the holes, the ,. ..
! holes receiving the set screws from the protuberances, so that ,,.,-, . , ,., ".
i, ~
~ - 2 -~ ~A
,~ ., ~ ,, ,. -,. ;,~ ; , ~
3L~37~8~ ~
the internal conductor may be anchored firmly within the inter-nal conductor connecting member. An internal conductor of smaller diameter than of the bore of the internal conductor `-connecting member may then be securecl, as the thin internal conductor is pressed into the recess of the internal conductor connecting member whilst being screwed tight. A wide range of types of cables may thus be coupled.
It is advantageous furthermore for the relative dielectric factor of the insulating member carrying the internal conductor connecting member to be ~2.5.
The invention will be further described, by way of example with reference to the accompanying drawing, which is a side view in part section of a preferred coupling device. The coupling device comprises a cylindrical metal casing l and an insulating member 3 situated in its cavity ll, in which an internal conductor connecting member 2 is cast. The casing 1 comprises two axially aligned openings having an internal screw-thread 12 for reception of the connecting devices 13 having :
externally screw-threaded stubs. Upon screwing-in the connect- ~ ;
ing stubs 13, at each end of the casing their end faces come into contact with the respective end faces of the casing at lO, so that an uninterrupted connection is produced for the external conductor. The metal to metal seals lO are reinforced by a rubber seal in the form of a ring 9 positioned between them, so that the contact point 9, lO is gastight, damp-proof and screened~
against interference radiation. The screwing of the casing l ;
~ and connecting stub 13 may be performed more easily if both ;~ ~
- parts have a hexagonal cross-section having the same size, so ~;
as to make possible to use of a single type of tool. After -this operation, the insulation 17 of the cable 16 is inserted L'_ into the already tightly screwed connecting stub 13. By -~
tightening the locking nut 14 on the connecting device, the . i ~ '.
, . . , , . , ., ' .
~ `~
~.C337~
cable adaptor 15 of the connectinq device is coupled to the connecting stub 13. The internal conductor extremity 18 of the cable, which extends beyond -the end of the insulation 17 of the cable 16, is thus urged into -the internal conductor connecting member 2 of the coupling device which is cast in the plastics insulating member 3, the latter being accurately centred by virtue of its press fit 19, the insulating member 3 being mounted immediately prior to the forming of the internal screw-thread 12. The extremities 18 of the internal conductor of the cable are then immobilised by captive set or locking screws 5 which are installed in loss-proof m~anner in protuber-ances 4 situated in the insulating member 3 for the purpose of simplified assembling operation, these protuberances being formed at one side of the axis of the cable. A casing aperture 6, which may be closed off by means of an inwardly screwable insert 7 and sealed off by means of a sealing ring 8 provides access to the screws. The insulating member 3 has dimensions such that~ in conjunction with the internal conductor connecting member 2 of metal and the casing 1, the rated value of the char~cteristic cable impedance is established. i~
,............ .~
Various modifications may be made within the scope ~. of the inYention.
: . ' : ,., , ~ :
,' "~ ~ " ' _ . .
. '~
, .
Claims (4)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A releasable coupling device for connecting together co-axial cable ends provided with connecting devices and having inner conductors, comprising, a generally tubular external casing forming an outer conductor and having an opening provided with closing means and two ends, each of said ends having a metal face and being provided with a ring of resilient material, an insulating member of plastics material having at least two hollow internally threaded protuberances, at least two screws received in said threaded protuberances for fastening said inner conductors and an inner conductor connecting member provided within said insulating member, wherein said insulating member is press-fitted into said external casing, said opening in said external casing provides access to said screws, and said external casing ends are threaded for connection to said connecting devices, when said metal faces and said resilient rings cooperate with said connecting devices to form seals therewith.
2. A coupling device according to claim 1, wherein said inner conductor connecting member has an internal bore, and holes arranged to line up with said hollow protuberances so as to allow passage of said screws.
3. A coupling device according to claim 2, wherein said internal bore of said inner conductor connecting member is provided with recesses opposite said holes.
4. A coupling device according to claim 1, wherein said insulating member has a relative dielectric factor less than or equal to 2.5.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2435499A DE2435499A1 (en) | 1974-07-24 | 1974-07-24 | COUPLING ELEMENT TO JOIN THE ENDS OF COAXIAL HIGH FREQUENCY CABLES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1037581A true CA1037581A (en) | 1978-08-29 |
Family
ID=5921334
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA231,701A Expired CA1037581A (en) | 1974-07-24 | 1975-07-17 | Coupling devices for co-axial cables |
Country Status (11)
| Country | Link |
|---|---|
| AT (1) | AT346947B (en) |
| BE (1) | BE826355A (en) |
| CA (1) | CA1037581A (en) |
| CH (1) | CH582432A5 (en) |
| DE (1) | DE2435499A1 (en) |
| DK (1) | DK335475A (en) |
| GB (1) | GB1464697A (en) |
| LU (1) | LU73037A1 (en) |
| NL (1) | NL7502909A (en) |
| NO (1) | NO139368C (en) |
| SE (1) | SE407311B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4108901C2 (en) * | 1991-03-19 | 1994-12-01 | Reinhold Barlian | Device for connecting and connecting an electrical line |
-
1974
- 1974-07-24 DE DE2435499A patent/DE2435499A1/en active Pending
-
1975
- 1975-03-06 BE BE154057A patent/BE826355A/en unknown
- 1975-03-12 NL NL7502909A patent/NL7502909A/en not_active Application Discontinuation
- 1975-03-17 CH CH338375A patent/CH582432A5/xx not_active IP Right Cessation
- 1975-03-19 AT AT210475A patent/AT346947B/en not_active IP Right Cessation
- 1975-03-24 SE SE7503403A patent/SE407311B/en unknown
- 1975-04-11 NO NO751292A patent/NO139368C/en unknown
- 1975-06-30 GB GB2745475A patent/GB1464697A/en not_active Expired
- 1975-07-17 CA CA231,701A patent/CA1037581A/en not_active Expired
- 1975-07-22 LU LU73037A patent/LU73037A1/xx unknown
- 1975-07-23 DK DK335475A patent/DK335475A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| GB1464697A (en) | 1977-02-16 |
| AT346947B (en) | 1978-12-11 |
| NO139368B (en) | 1978-11-13 |
| NO751292L (en) | 1976-01-27 |
| SE7503403L (en) | 1976-01-26 |
| SE407311B (en) | 1979-03-19 |
| NL7502909A (en) | 1976-01-27 |
| LU73037A1 (en) | 1976-03-02 |
| DE2435499A1 (en) | 1976-02-05 |
| BE826355A (en) | 1975-06-30 |
| DK335475A (en) | 1976-01-25 |
| ATA210475A (en) | 1978-04-15 |
| CH582432A5 (en) | 1976-11-30 |
| NO139368C (en) | 1979-02-21 |
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