GB2263828A - Coaxial plug-in connection - Google Patents
Coaxial plug-in connection Download PDFInfo
- Publication number
- GB2263828A GB2263828A GB9301367A GB9301367A GB2263828A GB 2263828 A GB2263828 A GB 2263828A GB 9301367 A GB9301367 A GB 9301367A GB 9301367 A GB9301367 A GB 9301367A GB 2263828 A GB2263828 A GB 2263828A
- Authority
- GB
- United Kingdom
- Prior art keywords
- plug
- cable
- dielectric
- coaxial
- inner conductor
- 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.)
- Granted
Links
- 238000002347 injection Methods 0.000 claims abstract description 23
- 239000007924 injection Substances 0.000 claims abstract description 23
- 239000011810 insulating material Substances 0.000 claims abstract description 15
- 239000002991 molded plastic Substances 0.000 claims abstract description 15
- 239000004020 conductor Substances 0.000 claims description 38
- 238000007789 sealing Methods 0.000 claims description 4
- 239000006260 foam Substances 0.000 abstract description 6
- 239000003989 dielectric material Substances 0.000 abstract description 5
- 238000001746 injection moulding Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 6
- 239000006261 foam material Substances 0.000 description 4
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 239000002184 metal Substances 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
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
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
- H01R13/504—Bases; Cases composed of different pieces different pieces being moulded, cemented, welded, e.g. ultrasonic, or swaged together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2103/00—Two poles
Abstract
A coaxial plug-in connection which is particularly suitable for coaxial cables with foam dielectrics has injection moulded plastics (16), which, during the injection moulding operation, penetrates through a bore (13a) into the inside of the plug housing, and there forms a plug dielectric (12). Disposed between a plug dielectric (12) and foam dielectric (2) of the cable is a disc (17) of insulating material which provides a defined boundary surface between the dielectrics (12) and (2). <IMAGE>
Description
COAXIAL PLUG-IN CONNECTION
The invention relates to a coaxial plug-in connection.
When terminating a coaxial cable, an inner conductor of the cable is connected to an inner conductor of a plug, and an outer conductor of the cable ends in a plug housing and is mechanically clamped therein and also contacted electrically therewith. Injection moulded plastics can provide sealing around the end of the cable and a part of the plug housing, the injection moulded plastics at the same time passing through at least one injection bore present in the plug housing and acting as a plug dielectric to fill a space between the end of the inner conductor of the plug at the cable end and the outer conductor of the plug.
A plug-in connection of this kind has been previously proposed on a manufactured coaxial connector cable of a given length formed with a coaxial plug at each of its ends. The injection moulded plastics performs a certain sealing function, and at the same time protects against knocks. However, when the injection moulded plastics is inserted and applied, care must be taken to ensure that the injection pressure of the hot thermoplastics material, injected into the mould which receives the plug and the part of the cable around which the injection is to be made, does not exceed a predetermined value, since otherwise the smooth or corrugated outer conductor of the coaxial cable can be deformed, resulting in a considerable increase in the reflection of the coaxial plug-in connection.
Even at minimum injection pressure, it has hitherto been impossible to produce a coaxial plug-in connection of the kind in question of low, reproducible reflection for cables with dielectrics made of synthetic foam material.
According to the invention there is provided a coaxial plug-in connection comprising a plug at the end of a cable, an inner conductor of which cable is connected to an inner conductor of the plug, and an outer conductor of which cable terminates in a plug housing and is mechanically clamped therein and also contacted electrically therewith, and injection moulded plastics which provides a sealing around the end of the cable and a part of the plug housing, the injection moulded plastics at the same time passing through at least one injection bore present in the plug housing and acting as a plug dielectric to fill a space between the cable end of the inner conductor of the plug and the outer conductor of the plug, in which arranged between the cable dielectric and the plug dielectric formed by the injection moulded plastics is a disc of insulating material the outer periphery of which is positioned form-lockingly in the plug housing.
Such a coaxial plug-in connection can be particularly suitable for coaxial cables with a synthetic foam dielectric and even in mass production can have a small, substantially constant reflection from piece to piece.
Thus it has now been appreciated that it is not deformation of the cable outer conductor which causes the afore-mentioned unforeseeable fluctuations in reflection, but that the ability of the foam material dielectric of the cable to be axially compressed results in the plug dielectric which is formed by injection of the plastics material pushing the foam dielectric back to a greater or lesser extent, so that the structurally predetermined position of the boundary surface between the two dielectrics is not maintained, and instead a boundary surface is formed of undefined axial position which is often not flat, thus not being disposed in a specific radial plane.
By virtue of the proposed, form-locking positioning of a disc of insulating material in the plug housing, flat, structurally accurately predetermined boundary faces can now be created, on the one hand, between the end face of the foam dielectric and the adjoining end face of the disc of insulating material, and, on the other hand, between the plug dielectric and the other end face of the disc of insulating material. Currently, several structural ways of positioning the disc of insulating material in form-locking manner are known to the skilled person.The simplest of these is to accommodate the disc of insulating material between an annular collar on the inside of the plug-in housing and a metal pressure ring, between the end face of which, on the cable side, and between the end face, on the plug side, of a hollow screw member, the cable outer conductor is mechanically clamped in known manner and electrically contacted.
The disc of insulating material can advantageously also be used to place the plug inner conductor in the correct axial position whilst the plug dielectric is being created by injection of the plastics material. Preferably the end face, at the cable end, of the inner conductor of the plug rests on the disc of insulating material.
To improve the resistance of the plug inner conductor to being pulled out, the plug inner conductor could be connected force-lockingly to the disc of insulting material. However, it is more advantageous, if, instead of this, a form-locking connection is produced between the plug dielectric and plug housing, on the one hand, and between the plug inner conductor and plug dielectric, on the other hand. Thus advantageously the plug dielectric is fixed form-lockingly to the plug housing.
Preferably the inner conductor of the plug is fixed form-lockingly in the plug dielectric.
The invention is diagrammatically illustrated by way of example in the accompanying drawing which is a longitudinal section through a coaxial plug-in connection according to the invention.
The plug-in connection comprises a coaxial plug of any suitable kind, a coaxial cable, likewise of any suitable design, connected to the plug, a dielectric made of a synthetic foam material, and a common injection moulded plastics which also forms the plug dielectric.
The coaxial cable comprises an inner conductor 1, the aforementioned synthetic foam dielectric 2, an outer conductor 3 which is here designed as a corrugated tube outer conductor, solely by way of example, but which could be a smooth-walled outer conductor or a braided outer conductor, and a cable casing 4.
The plug comprises a plug inner conductor 11, which is here in the form of a pin on the plug side, but which could be in the form of a bush, a plug dielectric 12, a plug housing 13, a screw ring 15 which cooperates with a pressure ring 14, and metal roughcast bush, not shown here.
The cable inner conductor 1 is connected in any known way, ag soldered, to the plug inner conductor 11. The cable outer conductor 3 is firmly clamped in the region of its end edge between the pressure ring 14 and the end face of the screw ring 15 by means of this latter.
The entire rear region of the plug and a part of the cable are embraced by an injection moulded plastics 16. Through at least one bore 15a in the screw ring 15, the injection moulded plastics 16 fills a part of the inner space of the screw ring 15 and also form-lockingly fixes the corrugated tubular outer conductor 3 shown here. By virtue of at least one other bore 13a in the plug housing 13, the material of the injection moulded plastics also fills the space between the plug housing and the plug inner conductor 11, and forms there the plug dielectric 12.Disposed in the plug housing 13 between the plug dielectric 12 and the dielectric 2 of synthetic foam material of the cable is a disc 17 of insulating material which can be inserted from the cable end of the plug housing, and which comprises a dielectric which is not deformed, even when it comes into contact with the hot injected material of the plastics moulding. The disc 17 of insulating material provides defined boundary surfaces between the dielectrics 12 and 2. The internal measurements of the plug housing are dependent on the dielectric constants, since only in this way can a low reflection value be obtained.
The disc 17 of insulating material bears, at the plug end, against an annular collar 13b of the plug housing 13. The end face, at the cable end, of the disc 17 of insulating material bears against the corresponding end face of the pressure ring 14. In this way, exact positioning is obtained.
At the plug end, the housing 13 has another annular collar 13c which form-lockingly secures the plug dielectric 12. The plug inner conductor 11 is, in turn, provided with an annular groove 11a form-lockingly to anchor it in the plug dielectric 12.
Claims (5)
1. A coaxial plug-in connection comprising a plug at the end of a cable, an inner conductor of which cable is connected to an inner conductor of the plug, and an outer conductor of which cable terminates in a plug housing and is mechanically clamped therein and also contacted electrically therewith, and injection moulded plastics which provides a sealing around the end of the cable and a part of the plug housing, the injection moulded plastics at the same time passing through at least one injection bore present in the plug housing and acting as a plug dielectric to fill a space between the cable end of the inner conductor of the plug and the outer conductor of the plug, in which arranged between the cable dielectric and the plug dielectric formed by the injection moulded plastics is a disc of insulating material the outer periphery of which is positioned form-lockingly in the plug housing.
2. A coaxial plug-in connection according to claim 1, in which the end face, at the cable end, of the inner conductor of the plug rests on the disc of insulating material.
3. A coaxial plug-in connection according to claim 1 or claim 2, in which the plug dielectric is fixed form-lockingly to the plug housing.
4. A coaxial plug-in connection according to any one of claims 1 to 3, in which the inner conductor of the plug is fixed form-lockingly in the plug dielectric.
5. A coaxial plug-in connection substantially as hereinbefore described and illustrated with reference to the accompanying drawing.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9201175U DE9201175U1 (en) | 1992-01-31 | 1992-01-31 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB9301367D0 GB9301367D0 (en) | 1993-03-17 |
| GB2263828A true GB2263828A (en) | 1993-08-04 |
| GB2263828B GB2263828B (en) | 1995-09-20 |
Family
ID=6875615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9301367A Expired - Fee Related GB2263828B (en) | 1992-01-31 | 1993-01-25 | Coaxial plug-in connection |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE9201175U1 (en) |
| FR (1) | FR2687853B1 (en) |
| GB (1) | GB2263828B (en) |
| IT (1) | IT1271349B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0768736A2 (en) * | 1995-10-16 | 1997-04-16 | Kabelmetal Electro GmbH | Moisture migration proof unpressurized radio frequency transmission system and method |
| GB2320623A (en) * | 1996-12-18 | 1998-06-24 | Huber+Suhner Ag | Coaxial connecting means |
| CH697606B1 (en) * | 2005-08-26 | 2008-12-15 | Multi Holding Ag | Plugging cable coupler, particularly for application in photovoltaic field, has bushing part and plug part, in which metallic contact bush or metallic contact plug is surrounded by insulation |
| US20160221282A1 (en) * | 2015-01-30 | 2016-08-04 | Neutrik Ag | Method for producing a casing of a plug part |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011111B (en) * | 2019-03-26 | 2021-05-11 | 中航光电科技股份有限公司 | Plug and use resistant high temperature seal connector subassembly of irradiation of this plug |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB621459A (en) * | 1947-02-28 | 1949-04-08 | Thomas Albert Butler | Improvements in or relating to electric plug and socket couplings |
| EP0083464A1 (en) * | 1982-01-06 | 1983-07-13 | Koninklijke Philips Electronics N.V. | Coaxial cable with a connector |
| US4746305A (en) * | 1986-09-17 | 1988-05-24 | Taisho Electric Industrial Co. Ltd. | High frequency coaxial connector |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB534985A (en) * | 1939-11-23 | 1941-03-25 | Pirelli General Cable Works | Improvements in or relating to joints or terminating devices for co-axial conductor electric cables |
| DE1162441B (en) * | 1962-01-15 | 1964-02-06 | Georg Spinner Dipl Ing | RF connector for coaxial lines and method for producing such |
| GB1421215A (en) * | 1972-05-04 | 1976-01-14 | ||
| FR2462798A1 (en) * | 1979-08-02 | 1981-02-13 | Cables De Lyon Geoffroy Delore | Spiral wound coaxial cable connector - has rubber joint compressed against threaded metal shell screwed onto cable spiral sheath |
| US4906207A (en) * | 1989-04-24 | 1990-03-06 | W. L. Gore & Associates, Inc. | Dielectric restrainer |
-
1992
- 1992-01-31 DE DE9201175U patent/DE9201175U1/de not_active Expired - Lifetime
-
1993
- 1993-01-25 GB GB9301367A patent/GB2263828B/en not_active Expired - Fee Related
- 1993-01-27 FR FR9300820A patent/FR2687853B1/en not_active Expired - Fee Related
- 1993-01-27 IT ITMI930125A patent/IT1271349B/en active IP Right Grant
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB621459A (en) * | 1947-02-28 | 1949-04-08 | Thomas Albert Butler | Improvements in or relating to electric plug and socket couplings |
| EP0083464A1 (en) * | 1982-01-06 | 1983-07-13 | Koninklijke Philips Electronics N.V. | Coaxial cable with a connector |
| US4746305A (en) * | 1986-09-17 | 1988-05-24 | Taisho Electric Industrial Co. Ltd. | High frequency coaxial connector |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0768736A2 (en) * | 1995-10-16 | 1997-04-16 | Kabelmetal Electro GmbH | Moisture migration proof unpressurized radio frequency transmission system and method |
| EP0768736A3 (en) * | 1995-10-16 | 1998-10-28 | Kabelmetal Electro GmbH | Moisture migration proof unpressurized radio frequency transmission system and method |
| GB2320623A (en) * | 1996-12-18 | 1998-06-24 | Huber+Suhner Ag | Coaxial connecting means |
| US6019640A (en) * | 1996-12-18 | 2000-02-01 | Huber+Suhner Ag | Coaxial connecting means |
| GB2320623B (en) * | 1996-12-18 | 2001-07-18 | Huber+Suhner Ag | Coaxial connecting means |
| CH697606B1 (en) * | 2005-08-26 | 2008-12-15 | Multi Holding Ag | Plugging cable coupler, particularly for application in photovoltaic field, has bushing part and plug part, in which metallic contact bush or metallic contact plug is surrounded by insulation |
| US20160221282A1 (en) * | 2015-01-30 | 2016-08-04 | Neutrik Ag | Method for producing a casing of a plug part |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2263828B (en) | 1995-09-20 |
| FR2687853B1 (en) | 1994-09-23 |
| GB9301367D0 (en) | 1993-03-17 |
| DE9201175U1 (en) | 1992-04-16 |
| ITMI930125A0 (en) | 1993-01-27 |
| ITMI930125A1 (en) | 1994-07-27 |
| FR2687853A1 (en) | 1993-08-27 |
| IT1271349B (en) | 1997-05-27 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19980125 |