EP0854540A2 - Screened connection structure for particular use with multi-cable plugs and sockets having a coaxial net mesh screen - Google Patents
Screened connection structure for particular use with multi-cable plugs and sockets having a coaxial net mesh screen Download PDFInfo
- Publication number
- EP0854540A2 EP0854540A2 EP97830522A EP97830522A EP0854540A2 EP 0854540 A2 EP0854540 A2 EP 0854540A2 EP 97830522 A EP97830522 A EP 97830522A EP 97830522 A EP97830522 A EP 97830522A EP 0854540 A2 EP0854540 A2 EP 0854540A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- coaxial
- connection structure
- truncated
- cone
- mesh
- 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
- 239000004020 conductor Substances 0.000 claims abstract description 29
- 238000012216 screening Methods 0.000 claims abstract description 12
- 230000002238 attenuated effect Effects 0.000 claims abstract 2
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 239000011810 insulating material Substances 0.000 claims description 9
- 239000012212 insulator Substances 0.000 claims description 6
- 210000000080 chela (arthropods) Anatomy 0.000 claims description 4
- 238000005476 soldering Methods 0.000 claims description 4
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 5
- 229910052802 copper Inorganic materials 0.000 description 5
- 239000010949 copper Substances 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 229910000861 Mg alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- -1 zinc-aluminium-magnesium Chemical compound 0.000 description 1
Images
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
- H01R9/0521—Connection to outer conductor by action of a nut
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2105/00—Three poles
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/02—Connectors or connections adapted for particular applications for antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2201/00—Connectors or connections adapted for particular applications
- H01R2201/18—Connectors or connections adapted for particular applications for television
-
- 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
- H01R24/52—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 mounted in or to a panel or structure
Definitions
- This invention concerns a connection structure, particularly for connections with one or more electrical cables of the coaxial reticular screen type.
- coaxial electrical cables particularly those meant to carry high-frequency signals, for example. the shielded cables of television aeriels or those adapted to transmit microphone signals. require adequate protection, namely, a correct screening from the electromagnetic waves always present in the cable and the environment, and which often cause disturbance and/or alteration both of the signal and the environment.
- Protection against the electromagnetic waves in the environment normally consists of a braided wire or mesh, formed of thin copper threads. which completely surrounds the electrical conductor that transports the signal and which is insulated from the conductor by an insulating sheath. placed concentrically around the conductor. Another insulating sheath is then placed around the mesh itself.
- the purpose of the reticular mesh is to allow the central conductor to transfer the signal running along it without dispersion towards the exterior. whilst at the same time not being affected by the outward environment.
- This invention aims to create a connecting structure for sockets, plugs and similar devices where a connection of one or more coaxial screened cables is required, while strictly respecting the regular coaxial nature of the screen relative to the central conductor and with long-term efficacy and stability.
- a further aim is the creation of a connecting structure similar to the above, which will be structurally simple, easy to assemble and competitively priced with regard to those currently available.
- Fig. 1 illustrates a coaxial cable C, made in the way described, by a central single-wire conductor C1, surrounded by an intermediary insulating sheath C2, around which there is wound a braided wire or reticular mesh shield C3, externally surrounded and protected by the external insulating sheath C4.
- a plug 1 for connecting at least one coaxial cable C comprises a main body 2 with two cavities 3 and 4 placed at right angles.
- a cavity 3 is placed so as to allow the insertion of a structure 5 in electro-insulating carrier material, held internally, a copper strip 6 equipped with an elasticated aperture 8, intended to receive and hold the copper single wire C1 of the coaxial cable C.
- Structure 5 is pierced with holes that will accommodate the standing pins 7B and 7D of a metallic base 7 from which emerges a tubular cylinder 7C, set so as to receive the contact of the external tubular zone of a plug's earth. or viceversa.
- the function of the pins 7B and 7D is to distance the metallic base 7 from the parallel base of the structure 5, where there are circuit tracks (not represented) with possible condensers and seams ensuring the correct passage of the two currents. which are, respectively, useful and harmful. or shielding. Consequently, the latter are prevented from causing impedances in the useful circuitry.
- the two parts 5 and 7 are fastened together by the beading 7A.
- Numbers 10 and 11 indicate the soft soldering used to join the copper strip 6 and a pin 12 to the common circuitry.
- the other cavity 4 of the body 2 is furnished with a bottom 13 from which protrudes a truncated cone 14 with an axial hole 15, and terminating in a sharp edge 16.
- the hole 15 has the same standardized diameter as the intermediary insulating sheath C2 of the coaxial cable C, in such a way that the circular sharp edge skims the external surface of the said insulating sheath and slips between this and the conducting braided wire or mesh C3, which, in this way, is forced to widen and rest against the external surface of the truncated cone 14.
- a clamping carriage or block 20 is slipped over the external sheath C4 of the cable C, having a hole with a diameter slightly greater than the external sheath C4.
- the base of the said hole terminates in a conical cavity with an inclination equal to that of the truncated cone 14, so that the sliding of the block or carriage 20 within the cavity 4 causes the end 21 of the external sheath C4 to be crushed centripetally against the external surface of the truncated cone 14, with the electro-conducting mesh or braided wire in-between.
- the latter will, therefore, be correctly positioned in close contact with the cone 14.
- the sliding of the block or carriage will be forced and regulated by at least one screw device.
- the shape of a screw with that purpose is represented by the broken lines and indicated by the number 22.
- the number 23 indicates a central hole in the main body 2, in which the screw 22 will be used. Screwing it onto a lead screw of the block 20 will determine the nature of the sliding, by pressing the electro-conducting mesh or braided wire C3 against the truncated cone 14.
- the plug which encloses the connecting structure is practically composed of two box-shaped bodies, indicated by the numbers 31 and 32, and by a clamping block or carriage 33.
- the body 31 has the form of a small quadrangular tray on the bottom 31a of which there is designed a small chute or tube 31b which is intended for inserting into a normal plug for coaxial cables.
- a metallic pivot-pin, coaxial to the tube 31a, is isolated from body 31 by means of an insulator bush 35.
- the box-shaped body 31 is then fitted internally with distance spacers 36 (figure 4) for a panel or plate 37, in insulating material, supporting a normal printed circuit 38 for the decodification of in-coming signals and furnished centrally with a hole 37a to allow the end of the pivot-pin 34 to pass.
- the said pivot-pin is firmly welded to the plate as shown by 37b in figures 7 and 9. Furthermore, this plate will have earth contacts, designed to rest on the corresponding contacts inside the body.
- Two identical bushes 39-39a are fastened to the plate 37 which carries the printed circuit. Made in insulating material. they have a square or round cross-section and are parallel to one another. crossed axially by a section of metal conductor 40 and40a respectively (figures 4.8 and 9), these being welded to plate 37 and shorter in length than their respective bushes 39 and 39a. in order to create a square countersink 42 and 42a, respectively, at the ends of said bushes.
- quadrangular or round metal heads, 43 and 43a respectively, in a single body or integral with the ends of the conductors 40,40a, as well as a head in insulating material 44,44a at the end of a screw 45,45a inserted on a lead screw located coaxially in body 32 of the metallic plug.
- the heads 44,44a in insulating material are essentially truncated pyramids in form with a quadrangular base, as can be clearly seen in figures 8 and 9, and are used to block the central single-wire C1 of the coaxial cable C.
- a catch 145 operated by a spring 146 -see Fig.10- can be inserted between each screw 45,45a, making it easier to block and unblock the single-wire C1 of cable C.
- insulator bush 39 is partially cut away for the sole purpose of showing its metal head 43, whilst bush 39a reveals the truncated pyramid end of the countersink 42.
- the main body 32 of the plug preferably made from die-cast zinc-aluminium-magnesium alloy, like the lid 31, has an appendage in the form of a quadrangular frame 46, of the right size to enclose the metallic lid 31, which holds the plug tube and the printed circuit.
- the secure clamping of body 31 within the frame of body 32 is obtained by means of flanged pegs 47, integral with body 32 and inserted into the holes 47a placed in the corresponding positions in body 31.
- body 32 In the upper part of body 32 there are two identical square cavities 48,48a (figure 4), placed so as to receive the parallel insulator bushes 39,39a, and deep enough to take the ends of the above-mentioned blocking heads 43,43a and 44,44a.
- the block or carriage 33 (figure 1), equipped externally with two pairs of prismatic runners 59, to run within corresponding grooves on the faces of the two sides 53,51 of body 32 (figure 6), and internally with two cylindrical cavities 60.
- said cavities 60 are cylindrical up to the sharp edge of the said truncated-cone appendages 53,53a, and then they become truncated-cone countersinks 61,61a, able to contain the screening sheath C3 and the external insulating sheath C4 of the coaxial cable pressed between the said surface cones, as already described in relation to Fig.2 in the first version.
- the stripped central conductor C1 is blocked by gripping it with the screw 45 against the fixed head 43, after which the carriage 33 is pushed completely inside the cavity 49, so enabling its countersunk surface 61 to block the screening sheath securely and concentrically against the truncated-cone appendage.
- the carriage 33 is securely blocked within the cavity 49 by means of a screw 62 inserted in a hole 63 made in the body 32 of the plug and tightened inside a lead screw 64 suitably located in the carriage 33.
- this screened connection structure as described and illustrated here, can be modified and varied by structural and functional equivalents, without falling outside the protected limits of this invention.
- the said appendages 53,53a rather than being perfect truncated cones, could be made in truncated pyramid form with a polygonal base or similar.
- the insulating materials can be varied according to the use made of the coaxial cables, and the panel or plate which holds the printed circuit may even be omitted.
Landscapes
- Multi-Conductor Connections (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
- Cable Accessories (AREA)
Abstract
Description
Claims (12)
- Screened connection structure for plugs and sockets with one or more coaxial cables of the coaxial reticular screen type for television aeriel systems, amplified trigger boxes, dividers, attenuators, shunts, distribution sockets attenuated or not, characterized by establishing the electrical contact between the typical coaxial reticular mesh screen (18) and the final clutch element (7C), by slipping a truncated cone (14) in electro-conducting material, pierced axially (15) to define a cutting top (16), between the sheath (17) around the central conductor and the coaxial reticular mesh (18), in this way the mesh is distanced concentrically from the central conductor (9) and subjected to pressure (21) from a female truncated cone pressing on a typical insulating sheath (19) around the coaxial reticular mesh (18), due to the pressure applied by a screw (22) on a sliding block (20) containing the above-mentioned female truncated cone.
- Screened connection structure according to the previous revendication, where the route of the usable signal conductor (9,6,12) is completely surrounded by metallic structures (2,20) which are earthed (7C)
- Screened connection structure according to the previous revendications, characterized by an insulating structure (5) holding an electro-conducting strip (6) equipped with elasticated aperture (8), as well as a metal base (7) containing a tubular cylinder (7C) for the earth.
- Screened connection structure according to revendication 1, characterized by its being inside a metal plug consisting of two prismatic bodies (31,32), cables and relevant couplings, one of these bodies (31) having the form of a small tray with a tubular hole and a central insulated metal pivot-pin, to be inserted in a socket for screened coaxial cable and incorporating a panel or plate (37) in insulating material, which holds an electronic printed circuit (38) for decoding the signal coming in via the said central pivot-pin. The other body (32) of the plug incorporates a screened connection structure for at least two cables with coaxial reticular screening, consisting of parallel bushes (39) in insulating material, directed perpendicularly to the said printed circuit and connected to it. The said insulator bushes will each receive a metal conductor (40) furnished with prismatic head (43) which will remain in contact with the stripped end of the central conductor of a coaxial cable, inserted perpendicularly to said conductor with the prismatic head, and blocked against said head by a screw that is coaxial to the same conductor, by means of a clamping element (44,145). The said body (32) of the plug that incorporates said bushes, has a quadrangular cavity (49) with a flat bottom wherein there are at least two holes (60) through each of which can be passed that part of the cable deprived of screening mesh and relative internal and external sheaths, so as to expose the final section of the conductor to be clamped between said heads; from the said flat bottom and coaxial to each of the said pass holes, there emerges essentially a truncated-cone section (53) with its larger base on the said flat bottom and the smaller with its sharp edge and cylindrical axial cavity; the sharp edge of said truncated-cone cavity permitting - during the insertion of the cable towards the clamping heads - the screening mesh and relative external sheath to open out from the external sheath of the central conductor in the cable, to the point where they are concentrically distant from the central conductor itself; the clamping of the screened cables within the said cavity being achieved by a carriage (33) with parallel holes (60), guided perpendicularly to the said flat bottom and designed with truncated-cone countersinks (61) at the ends of said parallel holes, so as to clamp the reticular mesh of each cable against the respective truncated-cone cavity and thereby establishing the contact with the metal plug; the said carriage will be blocked against said flat bottom by means of a screw (62) which passes through the metal part of the plug body between the said truncated-cone cavities.
- Connection structure as in revendication 4, characterized by the fact that said insulating panel or plate carrying the printed circuit is attached to the insulating bush of the central pivot-pin by means of soft soldering of the ends of aforementioned pin to said panel.
- Connection structure as in revendication 4 characterized by the fact that said panel carrying the printed circuit is connected to the end of said parallel insulator bushes by means of soft soldering of the ends of the metal conductors passing through said bushes.
- Connection structure according to revendications 5 and 6, in which said panel carrying the printed circuit is placed between the aforementioned cable bodies (31,32) and has earth contact points with one of these bodies; the two bodies are fastened together by pins (47), integral with one body (32) and clinched in holes of the other body.
- Connection structure as in revendications 4 to 6, characterized by the fact that the clamping elements in insulating material (44) are in the form of truncated pyramids, and activated by the aforementioned coaxial screws (45) on the conductors inserted in the bushes.
- Connection structure as in revendications 4 to 6, characterized by the fact that said clamping elements in insulating material (145) are in the form of catches operated by springs.
- Connection structure as in the previous revendications, characterized by the fact that aforementioned central pivot-pin is connected, on the side with the small chute, to the printed circuit by means of soft soldering, thereby binding strongly together the insulating bushes, the printed circuit and the central pivot-pin, and so creating an electric contact between the various elements which will suffer only slight losses in the high-frequency signal during the transfer.
- Connection structure as in the previous revendications, characterized by a direct link between the central pivot-pin and the conductors inserted in the bushes, and the absence of a panel carrying the electronic circuit.
- Connection structure as in any of the revendications from 5 to 11, where each truncated-cone appendage with sharp edge (53) has elasticated sections like a pincer, where the clamping carriage (33) has a conical cavity which fits the external surface of said appendage so as to clamp towards the middle said elasticated pincer sections; where the coaxial cable is inserted axially into said carriage and said truncated-cone appendage in such a way that its braided wire or net mesh - once stripped - can be tightly accommodated in said truncated-cone pincer appendage when the carriage is held by the clamping.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ITMI962658 | 1996-12-18 | ||
IT96MI002658A IT1289463B1 (en) | 1996-12-18 | 1996-12-18 | SHIELDED CONNECTION STRUCTURE FOR THE CREATION OF SOCKETS WITH MULTIPLE CABLES OF THE COAXIAL LATTICE SHIELDING TYPE |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0854540A2 true EP0854540A2 (en) | 1998-07-22 |
EP0854540A3 EP0854540A3 (en) | 1999-07-28 |
EP0854540B1 EP0854540B1 (en) | 2002-01-23 |
Family
ID=11375425
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97830522A Expired - Lifetime EP0854540B1 (en) | 1996-12-18 | 1997-10-17 | Screened connection structure for particular use with multi-cable plugs and sockets having a coaxial net mesh screen |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0854540B1 (en) |
DE (1) | DE69710040T2 (en) |
ES (1) | ES2171876T3 (en) |
IT (1) | IT1289463B1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013098383A1 (en) * | 2011-12-30 | 2013-07-04 | Ims Connector Systems Gmbh | Electric connection device |
CN116031113A (en) * | 2023-02-06 | 2023-04-28 | 国网黑龙江省电力有限公司超高压公司 | Circuit breaker and wiring disassembling method thereof |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0351903A1 (en) * | 1988-07-21 | 1990-01-24 | White Products B.V. | Dismountable coaxial coupling |
EP0459825A2 (en) * | 1990-06-01 | 1991-12-04 | Stirling Connectors Inc. | Crimpless coaxial cable connector with pull back cable engagement |
US5314349A (en) * | 1992-04-16 | 1994-05-24 | Erni Elektroapparate Gmbh | Connector for coaxial cable |
DE29608939U1 (en) * | 1995-08-25 | 1996-07-11 | GMZ Geräte-Meßvorrichtungen-Zubehör Handels-GmbH, 51766 Engelskirchen | Plug for an electric line |
-
1996
- 1996-12-18 IT IT96MI002658A patent/IT1289463B1/en active IP Right Grant
-
1997
- 1997-10-17 DE DE69710040T patent/DE69710040T2/en not_active Expired - Fee Related
- 1997-10-17 EP EP97830522A patent/EP0854540B1/en not_active Expired - Lifetime
- 1997-10-17 ES ES97830522T patent/ES2171876T3/en not_active Expired - Lifetime
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0351903A1 (en) * | 1988-07-21 | 1990-01-24 | White Products B.V. | Dismountable coaxial coupling |
EP0459825A2 (en) * | 1990-06-01 | 1991-12-04 | Stirling Connectors Inc. | Crimpless coaxial cable connector with pull back cable engagement |
US5314349A (en) * | 1992-04-16 | 1994-05-24 | Erni Elektroapparate Gmbh | Connector for coaxial cable |
DE29608939U1 (en) * | 1995-08-25 | 1996-07-11 | GMZ Geräte-Meßvorrichtungen-Zubehör Handels-GmbH, 51766 Engelskirchen | Plug for an electric line |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013098383A1 (en) * | 2011-12-30 | 2013-07-04 | Ims Connector Systems Gmbh | Electric connection device |
CN116031113A (en) * | 2023-02-06 | 2023-04-28 | 国网黑龙江省电力有限公司超高压公司 | Circuit breaker and wiring disassembling method thereof |
CN116031113B (en) * | 2023-02-06 | 2023-08-11 | 国网黑龙江省电力有限公司超高压公司 | Circuit breaker and wiring disassembling method thereof |
Also Published As
Publication number | Publication date |
---|---|
DE69710040T2 (en) | 2002-09-12 |
EP0854540A3 (en) | 1999-07-28 |
ITMI962658A1 (en) | 1998-06-18 |
EP0854540B1 (en) | 2002-01-23 |
ES2171876T3 (en) | 2002-09-16 |
ITMI962658A0 (en) | 1996-12-18 |
IT1289463B1 (en) | 1998-10-15 |
DE69710040D1 (en) | 2002-03-14 |
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