EP3174167B1 - Coaxial cable extender - Google Patents
Coaxial cable extender Download PDFInfo
- Publication number
- EP3174167B1 EP3174167B1 EP15397539.6A EP15397539A EP3174167B1 EP 3174167 B1 EP3174167 B1 EP 3174167B1 EP 15397539 A EP15397539 A EP 15397539A EP 3174167 B1 EP3174167 B1 EP 3174167B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cable
- connector
- coaxial cable
- extender
- baseplate
- 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.)
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- 239000004606 Fillers/Extenders Substances 0.000 title claims description 50
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
- 239000004020 conductor Substances 0.000 description 12
- 238000010276 construction Methods 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 6
- 238000002955 isolation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 229910000906 Bronze Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000010974 bronze Substances 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
Images
Classifications
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- 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
- H01R24/525—Outlets
-
- 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
- H01R24/54—Intermediate parts, e.g. adapters, splitters or elbows
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R2101/00—One pole
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
- H01R4/28—Clamped connections, spring connections
- H01R4/38—Clamped connections, spring connections utilising a clamping member acted on by screw or nut
- H01R4/40—Pivotable clamping member
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- 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
- H01R9/0509—Tapping connections
-
- 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
- H01R9/0524—Connection to outer conductor by action of a clamping member, e.g. screw fastening means
Definitions
- the invention relates to an arrangement for extending a coaxial cable, especially a pre-assembled coaxial cable.
- Coaxial cable is a type of cable that has an inner conductor surrounded by an insulating layer and a conducting shield. Usually, the cable is further protected by an outer insulating jacket. Coaxial cable may be used as a transmission line for radio frequency (RF) signals. Common applications of coaxial cable are video and cable television distribution, RF and microwave transmission, and computer and instrumentation data connections.
- RF radio frequency
- coaxial cables are typically pre-assembled in building constructions such that a coaxial cable terminates at a wall outlet.
- a coaxial cable terminates at a wall outlet.
- the center conductor of the coaxial cable breaks. It may happen that an end of a broken coaxial cable terminating in an outlet box mounted on a wall of a building is too short to extend to a baseplate of a wall-outlet. In certain occasions, it may be possible to pull out more cable from the constructions. However, this requires a lot of work, and sometimes pulling out the cable is not possible, and the problem of too short a cable remains.
- DE 19829653 discloses a wall-mounted antenna plug socket having pre-fitted termination cable section provided by manufacturer for facilitating connection to coaxial antenna cable installed in building.
- US 4,451,108 discloses a unitary-data-terminal-service outlet with both electrical power and a link with a central processing computer.
- DE 7214991 discloses an antenna socket comprising a cable clamp, wherein studs of a metallic cover engage in the bearing holes, which can be pivoted in a hinge-like manner about the axis of the bearing holes.
- the holes do not enable the first part to move in parallel with respect to the second part.
- US 6,679,726 discloses an electrical connector mounted through an aperture in a wall panel, wherein the connector is movable in a floating manner in respect to the panel.
- EP 2469666 discloses a coupling arrangement for a multimedia wall outlet.
- the first cable is of length of 15 to 45 cm, preferably 20 to 40 cm.
- the opening is of adjustable diameter.
- the first part and the second part comprise a first projecting part and a second projecting part, respectively, for supporting the second cable and for forming a lining of the opening, wherein the first projecting part fits at least partially inside the second projecting part.
- the lining comprises one or more grooves, the one or more grooves being oriented in different direction than the longitudinal direction of the second cable.
- the coaxial cable extender further comprises a baseplate, on which the male connector or the female connector is mounted.
- the baseplate comprises at least one aperture for the connector, the at least one aperture being formed to receive the connector.
- the baseplate comprises a clip, wherein the clip is bendable by applying a pushing or a bending force to the clip.
- the at least one aperture is arranged to receive the connector, and when the connector has been inserted in the aperture, the clip is arranged to be bent back to its original state such that the clip locks the connector to the baseplate.
- Fig. 1a and Fig. 1b show an example of a coaxial cable extender 100 according to an embodiment and an example of an outlet box 150.
- the coaxial cable extender 100 may comprise a first connector 110 and a first cable 120 which serves as an output cable for distributing an output signal, for example, from a coaxial cable of a cable TV network to one or more receiving equipment.
- the first cable 120 comprises a first end 125 and a second end 127.
- the first connector 110 is arranged to couple the first end 125 of the first cable 120 with an end of a second cable 160.
- the second cable 160 may be a coaxial cable pre-assembled in a house or other building.
- Fig. 1b shows an outlet box 150 wherein the end of the second cable 160 resides, i.e. the outlet box 150 terminating the second cable 160.
- the center conductor 165 of the second cable 160 (coaxial cable) has been pre-assembled in its place, and the cable is stripped such that the insulating layer 166 and a conducting shield (not shown) are removed around a short section of the center conductor 165.
- the outer insulating jacket made for example of PVC, is stripped further for a longer section. While residing in a location shown in Fig.
- a standard baseplate 170 of a wall outlet may be installed in the outlet box 150 such that the center conductor 165 is connected to a back connector (not shown) of the baseplate 170, and the RF signal transmitted via the center conductor 165 is further transferred to one or more connectors 171, typically male-/female-type IEC 169-2 connectors, residing in the front wall of the baseplate and enabling to connect a user equipment, such as a television set or a set-top-box, via a further coaxial cable to receive the RF signal.
- a user equipment such as a television set or a set-top-box
- the problem is that, for example when carrying out installation or maintenance of coaxial cable and/or wall outlet assemblies in a building, such as when removing the old baseplate 170, the center conductor 165 breaks easily, and thus the cable 160 may become too short to extend to the back connector of the baseplate 170. Thereby, the pre-assembled coaxial cable 160 cannot be connected to the wall outlet, and no RF signal can be transmitted via the wall outlet to a user equipment anymore.
- the second cable 160 may be extended using the coaxial cable extender 100 as disclosed in various embodiments herein.
- the coaxial cable extender 100 may be mountable in the outlet box 150 terminating the second cable 160, since the extender is small enough to fit in the outlet box 150.
- the coaxial cable extender 100 may further comprise a male connector 130 or a female connector coupled to the second end 127 of the first cable 120.
- the male/female connector may be, for example, IEC 169-2 standard connector or any other type of standard connector.
- the maintenance personnel may just strip another short section of the insulating layer 166 and the conducting shield around the center conductor 165, and simply connect the first connector 110 of the coaxial cable extender 100 to the revealed section of the center conductor 165.
- the mechanical structure of the first connector 110 enables a quick and easy installation and a firm mechanical connection to the second cable 160.
- the electrical structure of the first connector 110 ensures good RF signal performance and electrical conductivity, as well as prevents RF leakage and provides a good ground connection.
- the structure of the first connector is discussed more in detail further below.
- the male/female connector 130 coupled to the second end 127 of the first cable 120 may be used for supplying the RF signal from the pre-assembled second coaxial cable 160 to a user equipment.
- the coaxial cable extender may further comprise a baseplate.
- the male/female connector may be mounted on the baseplate.
- the original baseplate of the wall outlet is not usable any more, since the shortened center connector of the pre-assembled second coaxial cable 160 does not reach to the back connector of the original baseplate.
- the original baseplate of the wall outlet may be replaced by the baseplate of the coaxial cable extender. The structure of the baseplate is discussed more in detail further below.
- the coaxial cable extender may be used without the baseplate, and the male/female connector may be used as hanging from the end of the first cable 120.
- the male/female connector may be mounted on the another baseplate, for example to a handmade baseplate or another type of baseplate.
- the length of the first cable 120 may be such that the coaxial cable extender is easy to install, the male/female connector of the first cable extends at least to the wall surface of the wall outlet and yet the first cable fits within the cavity of the outlet box 150.
- the length may be 15 to 45 cm, essentially 20 to 40 cm.
- the length may be longer, e.g. 100 cm.
- Fig. 2a and 2b show an example of the first connector 200 of the coaxial cable extender and an example of a male connector 250 of the coaxial cable extender according to an embodiment.
- the first connector 200 may comprise a first part 210 and a second part 220 being attached to each other with a hinge 215 so that the first part 210 and the second part 220 are bendable in respect to each other.
- an opening 230, or a clamp, for the second cable 160 may be formed.
- the clamp or the opening enables secure fastening and coupling of the cable.
- the opening 230 is of adjustable diameter, i.e. the first connector may be suitable for extending coaxial cables of variable diameters.
- the first part 210 and the second part 220 of the first connector 200 comprise a first projecting part 232 and a second projecting part 233 between which parts the opening 230 may be formed.
- the projecting parts 232 and 233 may form a lining 231 of the opening 230.
- the projecting parts 232 and 233 have a function to support the second cable 160 when the first part 210 and the second part 220 are bent to the closed position.
- the length of the projecting parts 232 and 233 is such that it prevents the second cable 160 to bend and snap, preferably 3 to 6 mm.
- the diameter of the opening 230 may be from 3 mm to 10 mm, preferably from 4 mm to 7.5 mm.
- the opening 230 may be adjustable since the structure of the projecting parts 232 and 233 is such that the first projecting part 232 fits at least partly inside the second projecting part 233. Because of the adjustability, cables of different sizes may be coupled or fastened to the opening 230.
- the form of the opening 230 may be round or irregular.
- the form of the opening 230 may be such that it is suitable for receiving the second cable 160.
- the structure of the clamp/opening 230 may be such that the coaxial cable to be extended is squeezed between the bending parts tightly.
- the first connector 200 may comprise fastening means, e.g. screws 235, 236 or pins to tighten the parts 210 and 220 to the closed position.
- the first connector 200 may be connected to the first cable 120 through a connector 240.
- the male connector 250 in Fig. 2b or the female connector may be connected to the first cable 120 through a connector 260.
- the male connector 250 may comprise a protruding surface 270 which is compatible with a fastening element of a baseplate (see Fig. 3a ).
- the male connector 250 comprising the protruding surface 270 may be according to a standard (IEC 61169-2) or some other design.
- the protruding surface 270 may be compatible with a baseplate having a cover thickness of approximately 10 mm. The form and length of the protruding surface may vary along with the baseplate in question.
- Fig. 2c and 2d show the first part 210 and the second part 220 of the first connector 200 separately from each other.
- the one or more grooves 241 may be positioned in a way that they are oriented in different direction than the longitudinal direction of the cable.
- the grooves 241 may be positioned perpendicularly to the cable, i.e. parallel to the rim of the opening 230.
- the grooves may be positioned diagonally.
- the first connector 200 may have features to improve the electromagnetic compatibility (EMC), RF performance and safety.
- the groove construction 241 may provide additional contact between the first part 210 and the second part 220 other than merely via a braiding of the coaxial cable. This enables achieving an improved screening effectiveness of Class A+ according to the CENELEC (European Committee for Electrotechnical Standardization) standard.
- the first part 210 may move parallel to the second part 220, i.e. the hinge construction may be a free floating construction in contrast to a fixed position hinge.
- the free floating construction may have various advantages. For example, the contact between the first part 210 and the second part 220 may provide better EMC and RF performance.
- cables of a wide range of diameters may fit inside the clamp construction, i.e. between the first part 210 and the second part 220.
- the PCB may comprise a high voltage capacitor to make the product a Semi Isolated System Outlet according to the CENELEC/IEC standard.
- the high voltage capacitor may withstand voltages of 2120 VDC and 230 VAC not exceeding the maximum leakage currents according to the standard IEC 60728-11.
- the PCB may comprise a spring construction for coaxial inner conductor.
- the material of spring construction for coaxial inner conductor may be for example phosphor bronze or beryllium copper.
- the spring construction may be used instead of a terminal block, since the spring construction may have better RF performance and a good clamping force and resilience.
- the PCB may comprise a solder facility for coaxial inner conductor which may provide direct soldered contact preventing interruptions due to contact failure and preventing common path distortion (CPD).
- the solder facility may improve the RF performance.
- the coaxial cable extender may further comprise a baseplate, on which the male connector or the female connector may be mounted.
- Fig. 3a shows an example of the baseplate 300.
- the male connector 310 is mounted on the baseplate 300.
- the baseplate may comprise at least one aperture for the connector 310, the aperture being formed to receive the connector.
- the baseplate 300 may comprise a clip 320 for securely fastening the male/female connector 310 to the baseplate.
- the clip 320 is compatible with the protruding surface 270 of the connector (see Fig. 2b ).
- the clip 320 may be bendable e.g. by applying a pushing or a bending force to the clip. Once the clip is bent slightly away from its original state, i.e. a state along the surface of the baseplate, the connector 310 may be inserted in the aperture. The clip is then bent back to its original state such that the clip 320 locks the connector to the baseplate firmly and securely.
- the embodiment provides a fast and simple, yet secure way to attach the connector to the baseplate.
- the baseplate 300 may comprise several holes or slits 301, 302, 303, 304, 305, 306, 307, 308 for variable forms for screws or other fastening means to enable the assembling of the baseplate to various kinds of outlet boxes.
- the places of the holes and slits in the baseplate are selected such that the baseplate can be assembled practically to any of the commercially available standard outlet boxes.
- Fig. 3b shows an example of a coaxial cable extender according to an embodiment.
- the coaxial cable extender may comprise a first connector 360 and a first cable 370, wherein the first connector 360 is arranged to couple a first end 371 of the first cable 370 with an end of a second cable.
- the coaxial cable extender may be mountable in an outlet box terminating the second cable.
- the coaxial cable extender according to an embodiment may further comprise a male connector 372 or a female connector coupled to a second end of the first cable 370 and mounted on the baseplate 300.
- the coaxial cable extender may be used for installing various kinds of CATV modules to the wall outlets in a very straightforward manner.
- Fig. 4 shows various examples of applications of the coaxial cable extender.
- the coaxial cable extender may be used as wide-band modular solution to replace traditional wall-outlet systems.
- Example in Fig. 4a shows e.g. a stand-alone solution to replace a traditional wall outlet, solution 410 comprising the coaxial cable extender with a male connector 411 and a baseplate covered with a cover plate 412.
- the connector may be a female connector, or any connector type.
- FIG. 4b discloses the outlet solution 410 with a passive push-on 422.
- the push-on may be any kind of CATV module, e.g. a splitter, a diplexer and/or a filter module.
- the coaxial cable extender 100 may be deployed in various outlet boxes or frames, e.g. in frame 440 in Fig. 4c or in box 451 in Fig. 4e .
- the frame 440 may be covered with a cover plate 430 such as in Fig. 4d .
- the box 451 may be covered with a cover plate 450 such as in Fig. 4e .
- a push-on 460 may be installed on the cover plate 450 such as in Fig. 4g .
- One alternative of a push-on is an amplifier 470 such as in Fig. 4g .
- the CATV module may be a cable modem, an Ethernet-over-coax equipment, or any other communication equipment connectable to a wall outlet terminating a coaxial cable.
- FIG. 5a and 5b show examples of a block diagram of a coaxial cable extender and a coaxial cable extender according to an embodiment.
- a coaxial cable extender according to an embodiment may comprise a first connector 500 comprising an input 510 for the second cable, a first output 520 for the first cable and a second output 530 for a third cable.
- the first output 520 for the first cable may be galvanic isolated from the signal path between the input 510 and the second output 530.
- the galvanic isolation may be single or double isolation.
- the input signal coming via the input 510 may be redirected to the second output 530 via a splitter / tap / directional coupler 540.
- the directional coupler 540 enables the signal to be used in another circuit by coupling a defined amount of the electromagnetic power in a transmission line to another port / output, e.g. the output 520.
- the signal path between the input 510 and the second output 530 forms the main transmission line (coaxial cable).
- the signal of the main transmission line flows along the second cable coming through the input 510 and along the third cable via the second output 530.
- the coupled signal i.e. a portion of the signal of the main transmission line
- the first cable may lead to a push-on filter 550 having outputs for e.g. TV 551, radio 552 and internet 553.
- Fig. 5b shows an example of a coaxial cable extender implemented according to the block diagram of Fig. 5a .
- the coaxial cable extender may comprise the first connector 560 comprising a first clamp 565 for the second cable and a second clamp 570 for the third cable.
- the directions of the signal (in and out) may be marked on top of the first clamp 565 and/or the second clamp 570 with arrows e.g. by moulding.
- the first clamp 565 in Fig. 5b corresponds to the input 510 in Fig. 5a .
- the second clamp 570 in Fig. 5b corresponds to the second output 530 in Fig. 5a .
- An output 580 in Fig. 5b corresponds to the first output 520 in Fig. 5a .
- a relevant connector e.g. a male or a female connector may be coupled to the second end of the first cable 590.
- Fig. 6 shows an example of a galvanic isolated Euro Style module 610 which may be coupled to the second end of the first cable 620.
- the galvanic isolation may be single or double isolation.
- the galvanic isolated module 610 may replace the male or the female connector, or some other relevant connector, at the end of the first cable.
- the module 610 may be mounted in a Euro Style face plate, which can then be fitted in to any Euro style back box.
Description
- The invention relates to an arrangement for extending a coaxial cable, especially a pre-assembled coaxial cable.
- Coaxial cable is a type of cable that has an inner conductor surrounded by an insulating layer and a conducting shield. Usually, the cable is further protected by an outer insulating jacket. Coaxial cable may be used as a transmission line for radio frequency (RF) signals. Common applications of coaxial cable are video and cable television distribution, RF and microwave transmission, and computer and instrumentation data connections.
- For cable television distribution, coaxial cables are typically pre-assembled in building constructions such that a coaxial cable terminates at a wall outlet. When carrying out installation or maintenance of coaxial cable and/or wall outlet assemblies, it is a common problem that the center conductor of the coaxial cable breaks. It may happen that an end of a broken coaxial cable terminating in an outlet box mounted on a wall of a building is too short to extend to a baseplate of a wall-outlet. In certain occasions, it may be possible to pull out more cable from the constructions. However, this requires a lot of work, and sometimes pulling out the cable is not possible, and the problem of too short a cable remains. Sometimes one needs to tear down the constructions or even dig the cable up in the garden to be able to get additional length to that part of the cable which is visible in the outlet box terminating the coaxial cable. Considering a rather simple task of, for example, installing a new wall outlet, the work needed to extend the coaxial cable such that it reaches the base plate is far too excessive. Therefore, a solution is needed to enable extending the coaxial cable conveniently.
-
DE 19829653 discloses a wall-mounted antenna plug socket having pre-fitted termination cable section provided by manufacturer for facilitating connection to coaxial antenna cable installed in building. -
US 4,451,108 discloses a unitary-data-terminal-service outlet with both electrical power and a link with a central processing computer. -
DE 7214991 discloses an antenna socket comprising a cable clamp, wherein studs of a metallic cover engage in the bearing holes, which can be pivoted in a hinge-like manner about the axis of the bearing holes. However, the holes do not enable the first part to move in parallel with respect to the second part. -
US 6,679,726 discloses an electrical connector mounted through an aperture in a wall panel, wherein the connector is movable in a floating manner in respect to the panel. -
EP 2469666 discloses a coupling arrangement for a multimedia wall outlet. - Now, an improved arrangement has been developed to reduce the above-mentioned problems. As aspects of the invention, we present a coaxial cable extender, which is characterized in what will be presented in the independent claim.
- The dependent claims disclose advantageous embodiments of the invention.
- According to an aspect of the invention, there is provided a coaxial cable extender according to claim 1.
- According to an embodiment, the first cable is of length of 15 to 45 cm, preferably 20 to 40 cm.
- According to an embodiment, the opening is of adjustable diameter.
- According to an embodiment, the first part and the second part comprise a first projecting part and a second projecting part, respectively, for supporting the second cable and for forming a lining of the opening, wherein the first projecting part fits at least partially inside the second projecting part.
- According to an embodiment, the lining comprises one or more grooves, the one or more grooves being oriented in different direction than the longitudinal direction of the second cable.
- According to an embodiment, the coaxial cable extender further comprises a baseplate, on which the male connector or the female connector is mounted.
- According to an embodiment, the baseplate comprises at least one aperture for the connector, the at least one aperture being formed to receive the connector.
- According to an embodiment, the baseplate comprises a clip, wherein the clip is bendable by applying a pushing or a bending force to the clip.
- According to an embodiment, when the clip is bent from its original state, the at least one aperture is arranged to receive the connector, and when the connector has been inserted in the aperture, the clip is arranged to be bent back to its original state such that the clip locks the connector to the baseplate.
- The invention will now be described in more detail in connection with preferred embodiments with reference to the appended drawings, in which:
-
Fig. 1a and 1b show an example of a coaxial cable extender according to an embodiment and an example of an outlet box; -
Fig. 2a and 2b show an example of a first connector and an example of a male connector according to an embodiment; -
Fig. 2c and 2d show examples of a first part and a second part of a first connector; -
Fig. 3a and 3b show an example of a baseplate and an example of a coaxial cable extender comprising a baseplate according to an embodiment; -
Fig. 4a, 4b, 4c, 4d, 4e, 4f and 4g show examples of applications where the coaxial cable extender according to an embodiment is usable; and -
Fig. 5a and 5b show examples of a block diagram of a coaxial cable extender and a push-on filter, and a coaxial cable extender according to an embodiment. -
Fig. 6 shows an example of a galvanic isolated module. -
Fig. 1a and Fig. 1b show an example of acoaxial cable extender 100 according to an embodiment and an example of anoutlet box 150. Thecoaxial cable extender 100 may comprise afirst connector 110 and afirst cable 120 which serves as an output cable for distributing an output signal, for example, from a coaxial cable of a cable TV network to one or more receiving equipment. Thefirst cable 120 comprises afirst end 125 and asecond end 127. Thefirst connector 110 is arranged to couple thefirst end 125 of thefirst cable 120 with an end of asecond cable 160. Thesecond cable 160 may be a coaxial cable pre-assembled in a house or other building. -
Fig. 1b shows anoutlet box 150 wherein the end of thesecond cable 160 resides, i.e. theoutlet box 150 terminating thesecond cable 160. Thecenter conductor 165 of the second cable 160 (coaxial cable) has been pre-assembled in its place, and the cable is stripped such that theinsulating layer 166 and a conducting shield (not shown) are removed around a short section of thecenter conductor 165. Typically, the outer insulating jacket, made for example of PVC, is stripped further for a longer section. While residing in a location shown inFig. 1b , astandard baseplate 170 of a wall outlet may be installed in theoutlet box 150 such that thecenter conductor 165 is connected to a back connector (not shown) of thebaseplate 170, and the RF signal transmitted via thecenter conductor 165 is further transferred to one ormore connectors 171, typically male-/female-type IEC 169-2 connectors, residing in the front wall of the baseplate and enabling to connect a user equipment, such as a television set or a set-top-box, via a further coaxial cable to receive the RF signal. - The problem is that, for example when carrying out installation or maintenance of coaxial cable and/or wall outlet assemblies in a building, such as when removing the
old baseplate 170, thecenter conductor 165 breaks easily, and thus thecable 160 may become too short to extend to the back connector of thebaseplate 170. Thereby, the pre-assembledcoaxial cable 160 cannot be connected to the wall outlet, and no RF signal can be transmitted via the wall outlet to a user equipment anymore. - Now, in order to enable the maintenance personnel to solve the problem quickly and in a straightforward manner, without tearing down any constructions of the building, the
second cable 160 may be extended using thecoaxial cable extender 100 as disclosed in various embodiments herein. Thecoaxial cable extender 100 may be mountable in theoutlet box 150 terminating thesecond cable 160, since the extender is small enough to fit in theoutlet box 150. Thecoaxial cable extender 100 may further comprise amale connector 130 or a female connector coupled to thesecond end 127 of thefirst cable 120. The male/female connector may be, for example, IEC 169-2 standard connector or any other type of standard connector. - Hence, the maintenance personnel may just strip another short section of the insulating
layer 166 and the conducting shield around thecenter conductor 165, and simply connect thefirst connector 110 of thecoaxial cable extender 100 to the revealed section of thecenter conductor 165. The mechanical structure of thefirst connector 110 enables a quick and easy installation and a firm mechanical connection to thesecond cable 160. The electrical structure of thefirst connector 110 ensures good RF signal performance and electrical conductivity, as well as prevents RF leakage and provides a good ground connection. The structure of the first connector is discussed more in detail further below. Now the male/female connector 130 coupled to thesecond end 127 of thefirst cable 120 may be used for supplying the RF signal from the pre-assembled secondcoaxial cable 160 to a user equipment. - According to an embodiment, the coaxial cable extender may further comprise a baseplate. The male/female connector may be mounted on the baseplate. In most occasions, the original baseplate of the wall outlet is not usable any more, since the shortened center connector of the pre-assembled second
coaxial cable 160 does not reach to the back connector of the original baseplate. Thus, the original baseplate of the wall outlet may be replaced by the baseplate of the coaxial cable extender. The structure of the baseplate is discussed more in detail further below. - Alternatively, the coaxial cable extender may be used without the baseplate, and the male/female connector may be used as hanging from the end of the
first cable 120. Yet alternatively, the male/female connector may be mounted on the another baseplate, for example to a handmade baseplate or another type of baseplate. - The length of the
first cable 120 may be such that the coaxial cable extender is easy to install, the male/female connector of the first cable extends at least to the wall surface of the wall outlet and yet the first cable fits within the cavity of theoutlet box 150. According to an embodiment, the length may be 15 to 45 cm, essentially 20 to 40 cm. Alternatively, the length may be longer, e.g. 100 cm. -
Fig. 2a and 2b show an example of thefirst connector 200 of the coaxial cable extender and an example of amale connector 250 of the coaxial cable extender according to an embodiment. Thefirst connector 200 may comprise afirst part 210 and asecond part 220 being attached to each other with ahinge 215 so that thefirst part 210 and thesecond part 220 are bendable in respect to each other. - When the
first part 210 and thesecond part 220 are bent to a closed position, anopening 230, or a clamp, for thesecond cable 160 may be formed. The clamp or the opening enables secure fastening and coupling of the cable. According to an embodiment, theopening 230 is of adjustable diameter, i.e. the first connector may be suitable for extending coaxial cables of variable diameters. - According to an embodiment, the
first part 210 and thesecond part 220 of thefirst connector 200 comprise a first projectingpart 232 and a second projectingpart 233 between which parts theopening 230 may be formed. The projectingparts opening 230. The projectingparts second cable 160 when thefirst part 210 and thesecond part 220 are bent to the closed position. The length of the projectingparts second cable 160 to bend and snap, preferably 3 to 6 mm. - The diameter of the
opening 230 may be from 3 mm to 10 mm, preferably from 4 mm to 7.5 mm. Theopening 230 may be adjustable since the structure of the projectingparts part 232 fits at least partly inside the second projectingpart 233. Because of the adjustability, cables of different sizes may be coupled or fastened to theopening 230. The form of theopening 230 may be round or irregular. The form of theopening 230 may be such that it is suitable for receiving thesecond cable 160. The structure of the clamp/opening 230 may be such that the coaxial cable to be extended is squeezed between the bending parts tightly. Thefirst connector 200 may comprise fastening means, e.g. screws 235, 236 or pins to tighten theparts first connector 200 may be connected to thefirst cable 120 through aconnector 240. - The
male connector 250 inFig. 2b or the female connector may be connected to thefirst cable 120 through aconnector 260. Further, themale connector 250 may comprise aprotruding surface 270 which is compatible with a fastening element of a baseplate (seeFig. 3a ). Themale connector 250 comprising the protrudingsurface 270 may be according to a standard (IEC 61169-2) or some other design. The protrudingsurface 270 may be compatible with a baseplate having a cover thickness of approximately 10 mm. The form and length of the protruding surface may vary along with the baseplate in question. - According to an embodiment, there may be one or
more grooves 241 in the lining 231 of theopening 230 to prevent the cable slipping out from the clamp. In this way, the coupling is secure.Fig. 2c and 2d show thefirst part 210 and thesecond part 220 of thefirst connector 200 separately from each other. The one ormore grooves 241 may be positioned in a way that they are oriented in different direction than the longitudinal direction of the cable. For example, thegrooves 241 may be positioned perpendicularly to the cable, i.e. parallel to the rim of theopening 230. Alternatively, the grooves may be positioned diagonally. - The
first connector 200 may have features to improve the electromagnetic compatibility (EMC), RF performance and safety. Thegroove construction 241 may provide additional contact between thefirst part 210 and thesecond part 220 other than merely via a braiding of the coaxial cable. This enables achieving an improved screening effectiveness of Class A+ according to the CENELEC (European Committee for Electrotechnical Standardization) standard. Thefirst part 210 may move parallel to thesecond part 220, i.e. the hinge construction may be a free floating construction in contrast to a fixed position hinge. The free floating construction may have various advantages. For example, the contact between thefirst part 210 and thesecond part 220 may provide better EMC and RF performance. Alternatively or in addition, cables of a wide range of diameters may fit inside the clamp construction, i.e. between thefirst part 210 and thesecond part 220. - There may be a printed circuit board (PCB) inside the
first connector 200. The PCB may comprise a high voltage capacitor to make the product a Semi Isolated System Outlet according to the CENELEC/IEC standard. The high voltage capacitor may withstand voltages of 2120 VDC and 230 VAC not exceeding the maximum leakage currents according to the standard IEC 60728-11. The PCB may comprise a spring construction for coaxial inner conductor. The material of spring construction for coaxial inner conductor may be for example phosphor bronze or beryllium copper. The spring construction may be used instead of a terminal block, since the spring construction may have better RF performance and a good clamping force and resilience. The PCB may comprise a solder facility for coaxial inner conductor which may provide direct soldered contact preventing interruptions due to contact failure and preventing common path distortion (CPD). The solder facility may improve the RF performance. According to an embodiment, the coaxial cable extender may further comprise a baseplate, on which the male connector or the female connector may be mounted.Fig. 3a shows an example of thebaseplate 300. InFig. 3a , themale connector 310 is mounted on thebaseplate 300. According to an embodiment, the baseplate may comprise at least one aperture for theconnector 310, the aperture being formed to receive the connector. - According to an embodiment, the
baseplate 300 may comprise aclip 320 for securely fastening the male/female connector 310 to the baseplate. Theclip 320 is compatible with the protrudingsurface 270 of the connector (seeFig. 2b ). Theclip 320 may be bendable e.g. by applying a pushing or a bending force to the clip. Once the clip is bent slightly away from its original state, i.e. a state along the surface of the baseplate, theconnector 310 may be inserted in the aperture. The clip is then bent back to its original state such that theclip 320 locks the connector to the baseplate firmly and securely. Thus, the embodiment provides a fast and simple, yet secure way to attach the connector to the baseplate. - The
baseplate 300 may comprise several holes or slits 301, 302, 303, 304, 305, 306, 307, 308 for variable forms for screws or other fastening means to enable the assembling of the baseplate to various kinds of outlet boxes. The places of the holes and slits in the baseplate are selected such that the baseplate can be assembled practically to any of the commercially available standard outlet boxes. -
Fig. 3b shows an example of a coaxial cable extender according to an embodiment. The coaxial cable extender according to an embodiment may comprise afirst connector 360 and afirst cable 370, wherein thefirst connector 360 is arranged to couple afirst end 371 of thefirst cable 370 with an end of a second cable. The coaxial cable extender may be mountable in an outlet box terminating the second cable. The coaxial cable extender according to an embodiment may further comprise amale connector 372 or a female connector coupled to a second end of thefirst cable 370 and mounted on thebaseplate 300. - In addition to merely extending the (broken) pre-assembled coaxial cable, the coaxial cable extender may be used for installing various kinds of CATV modules to the wall outlets in a very straightforward manner.
Fig. 4 shows various examples of applications of the coaxial cable extender. The coaxial cable extender may be used as wide-band modular solution to replace traditional wall-outlet systems. Example inFig. 4a shows e.g. a stand-alone solution to replace a traditional wall outlet,solution 410 comprising the coaxial cable extender with amale connector 411 and a baseplate covered with acover plate 412. Alternatively the connector may be a female connector, or any connector type. - Another example in
Fig. 4b discloses theoutlet solution 410 with a passive push-on 422. The push-on may be any kind of CATV module, e.g. a splitter, a diplexer and/or a filter module. - The
coaxial cable extender 100 may be deployed in various outlet boxes or frames, e.g. inframe 440 inFig. 4c or inbox 451 inFig. 4e . Theframe 440 may be covered with acover plate 430 such as inFig. 4d . Thebox 451 may be covered with acover plate 450 such as inFig. 4e . Further, a push-on 460 may be installed on thecover plate 450 such as inFig. 4g . One alternative of a push-on is anamplifier 470 such as inFig. 4g . - Alternatively or in addition, the CATV module may be a cable modem, an Ethernet-over-coax equipment, or any other communication equipment connectable to a wall outlet terminating a coaxial cable.
-
Fig. 5a and 5b show examples of a block diagram of a coaxial cable extender and a coaxial cable extender according to an embodiment. A coaxial cable extender according to an embodiment may comprise afirst connector 500 comprising aninput 510 for the second cable, afirst output 520 for the first cable and asecond output 530 for a third cable. Thefirst output 520 for the first cable may be galvanic isolated from the signal path between theinput 510 and thesecond output 530. The galvanic isolation may be single or double isolation. The input signal coming via theinput 510 may be redirected to thesecond output 530 via a splitter / tap /directional coupler 540. Thedirectional coupler 540 enables the signal to be used in another circuit by coupling a defined amount of the electromagnetic power in a transmission line to another port / output, e.g. theoutput 520. The signal path between theinput 510 and thesecond output 530 forms the main transmission line (coaxial cable). The signal of the main transmission line flows along the second cable coming through theinput 510 and along the third cable via thesecond output 530. The coupled signal (i.e. a portion of the signal of the main transmission line) flows along the first cable via the (single or double) galvanic isolatedfirst output 520. The first cable may lead to a push-onfilter 550 having outputs fore.g. TV 551,radio 552 andinternet 553. -
Fig. 5b shows an example of a coaxial cable extender implemented according to the block diagram ofFig. 5a . The coaxial cable extender according to an embodiment may comprise thefirst connector 560 comprising afirst clamp 565 for the second cable and asecond clamp 570 for the third cable. The directions of the signal (in and out) may be marked on top of thefirst clamp 565 and/or thesecond clamp 570 with arrows e.g. by moulding. Thefirst clamp 565 inFig. 5b corresponds to theinput 510 inFig. 5a . Thesecond clamp 570 inFig. 5b corresponds to thesecond output 530 inFig. 5a . Anoutput 580 inFig. 5b corresponds to thefirst output 520 inFig. 5a . A relevant connector, e.g. a male or a female connector may be coupled to the second end of thefirst cable 590. -
Fig. 6 shows an example of a galvanic isolatedEuro Style module 610 which may be coupled to the second end of thefirst cable 620. The galvanic isolation may be single or double isolation. The galvanicisolated module 610 may replace the male or the female connector, or some other relevant connector, at the end of the first cable. Themodule 610 may be mounted in a Euro Style face plate, which can then be fitted in to any Euro style back box.
Claims (11)
- A coaxial cable extender (100) comprising:- a first cable (120, 370, 590, 620);- a first connector (110, 200, 360, 500) arranged to couple a first end (125) of the first cable (120, 370, 590, 620) with an end of a second cable (160), the coaxial cable extender (100) being mountable in an outlet box (150) terminating the second cable (160); and the coaxial cable extender (100) further comprising:- a male connector (130, 250, 310, 372) or a female connector coupled to a second end (127) of the first cable (120, 370, 590, 620);characterised in that
the first connector (110, 200, 360, 500) comprises a first part (210) and a second part (220) being attached to each other with a hinge (215) so that the first part (210) and the second part (220) are bendable in respect to each other, wherein
the hinge (215) is a floating hinge enabling the first part (210) to move in parallel with respect to the second part (220), wherein when the first part (210) and the second part (220) are bent to a closed position, an opening (230) and a clamp for a second cable (160) is formed, said clamp or opening (230) being suitable for enabling secure fastening and coupling of the second cable (160). - The coaxial cable extender (100) according to claim 1, wherein the first cable (120, 370, 590, 620) is of length of 15 to 45 cm, preferably 20 to 40 cm.
- The coaxial cable extender (100) according to claim 1 or 2, the first connector (110, 200, 360, 500) further comprising fastening means (235, 236) for tightening the first part (210) and the second part (220) to the closed position such that the opening (230) has adjustable diameter.
- The coaxial cable extender (100) according to any preceding claim, wherein the first part (210) and the second part (220) comprise a first projecting part (232) and a second projecting part (233), respectively, for supporting the second cable (160) and for forming a lining (231) of the opening (230), wherein the first projecting part (232) fits at least partially inside the second projecting part (233).
- The coaxial cable extender (100) according to claim 4, wherein the lining (231) comprises one or more grooves (241), the one or more grooves (241) being oriented in different direction than the longitudinal direction of the second cable 160.
- The coaxial cable extender (100) according to any preceding claim, further comprising:- a baseplate (300), on which the male connector (310, 372) or the female connector is mounted.
- The coaxial cable extender (100) according to claim 6, the baseplate (300) comprising:- at least one aperture for the connector (310, 372), the at least one aperture being formed to receive the connector (310, 372).
- The coaxial cable extender (100) according to claim 6 or 7, the baseplate (300) comprising a clip (320), wherein the clip (320) is bendable by applying a pushing or a bending force to the clip (320).
- The coaxial cable extender (100) according to claim 8, wherein
when the clip (320) is bent from its original state, the at least one aperture is arranged to receive the connector (310, 372), and
when the connector (310, 372) has been inserted in the aperture, the clip (320) is arranged to be bent back to its original state such that the clip (320) locks the connector (310, 372) to the baseplate. - The coaxial cable extender (100) according to any preceding claim, wherein the first connector (500) comprises:- input (510) for the second cable;- a first output (520) for the first cable (590); and- a second output (530) for a third cable,wherein the first output (520) for the first cable is galvanic isolated from a signal path between the input (510) and the second output (530).
- The coaxial cable extender (100) according to claim 10, wherein the first connector (500) comprises a first clamp (565) for the second cable and a second clamp (570) for the third cable.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL15397539T PL3174167T3 (en) | 2015-11-30 | 2015-11-30 | Coaxial cable extender |
EP15397539.6A EP3174167B1 (en) | 2015-11-30 | 2015-11-30 | Coaxial cable extender |
PCT/FI2016/050840 WO2017093607A1 (en) | 2015-11-30 | 2016-11-30 | Coaxial cable extender |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP15397539.6A EP3174167B1 (en) | 2015-11-30 | 2015-11-30 | Coaxial cable extender |
Publications (2)
Publication Number | Publication Date |
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EP3174167A1 EP3174167A1 (en) | 2017-05-31 |
EP3174167B1 true EP3174167B1 (en) | 2021-02-17 |
Family
ID=55027672
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15397539.6A Active EP3174167B1 (en) | 2015-11-30 | 2015-11-30 | Coaxial cable extender |
Country Status (3)
Country | Link |
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EP (1) | EP3174167B1 (en) |
PL (1) | PL3174167T3 (en) |
WO (1) | WO2017093607A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7214991U (en) * | 1972-09-07 | Bosch R Gmbh | Antenna socket | |
US4451108A (en) * | 1982-08-30 | 1984-05-29 | Skidmore Donald D | Data-terminal service outlet |
DE19829653C2 (en) * | 1998-07-02 | 2000-08-31 | Kathrein Werke Kg | Antenna socket |
US6679726B1 (en) * | 2002-11-26 | 2004-01-20 | Molex Incorporated | Panel mounted electrical connector |
DE102010055963B4 (en) * | 2010-12-23 | 2012-11-29 | Kathrein-Werke Kg | Multimedia box |
-
2015
- 2015-11-30 EP EP15397539.6A patent/EP3174167B1/en active Active
- 2015-11-30 PL PL15397539T patent/PL3174167T3/en unknown
-
2016
- 2016-11-30 WO PCT/FI2016/050840 patent/WO2017093607A1/en active Application Filing
Non-Patent Citations (1)
Title |
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None * |
Also Published As
Publication number | Publication date |
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EP3174167A1 (en) | 2017-05-31 |
PL3174167T3 (en) | 2021-09-06 |
WO2017093607A1 (en) | 2017-06-08 |
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