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WO2016009305A1 - Connection device for optical and electric hybrid cable - Google Patents

Connection device for optical and electric hybrid cable Download PDF

Info

Publication number
WO2016009305A1
WO2016009305A1 PCT/IB2015/055123 IB2015055123W WO2016009305A1 WO 2016009305 A1 WO2016009305 A1 WO 2016009305A1 IB 2015055123 W IB2015055123 W IB 2015055123W WO 2016009305 A1 WO2016009305 A1 WO 2016009305A1
Authority
WO
WIPO (PCT)
Prior art keywords
optical
electric hybrid
fiber tube
fiber
hybrid cable
Prior art date
Application number
PCT/IB2015/055123
Other languages
French (fr)
Inventor
Junfeng Wang
Xingze WANG
Liangliang XU
Lizhang Yang
Original Assignee
Tyco Electronics (Shanghai) Co., Ltd
Tyco Electronics Uk Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tyco Electronics (Shanghai) Co., Ltd, Tyco Electronics Uk Ltd filed Critical Tyco Electronics (Shanghai) Co., Ltd
Publication of WO2016009305A1 publication Critical patent/WO2016009305A1/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/44—Mechanical structures for providing tensile strength and external protection for fibres, e.g. optical transmission cables
    • G02B6/4401—Optical cables
    • G02B6/4415—Cables for special applications
    • G02B6/4416—Heterogeneous cables
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/46—Processes or apparatus adapted for installing or repairing optical fibres or optical cables
    • G02B6/50—Underground or underwater installation; Installation through tubing, conduits or ducts

Definitions

  • the present disclosure relates to a connection device for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable.
  • an optical and electric hybrid cable that is, a cable having both power cable and fiber.
  • the applicant of the present application has proposed a technical solution previously, in which the electrical connection of the power cables contained in two optical and electric hybrid cables is achieved by means of a conventional crimping method, and the optical splicing of the fibers contained in two optical and electric hybrid cables is achieved by means of a fiber optic splicing box.
  • the purpose of the present disclosure is intended to solve at least one aspect of the above issues and faults in the prior art.
  • One object of the present disclosure is to provide a connection device for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable with a simple structure.
  • connection device for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable.
  • the first optical and electric hybrid cable has a first power cable and a first fiber tube for receiving a fiber therein
  • the second optical and electric hybrid cable has a second power cable and a second fiber tube for receiving the fiber therein.
  • the connection device comprises a fiber tube connector for coupling the first fiber tube with the second fiber tube, and a power cable connector for electrically connecting the first power cable and the second power cable, wherein the fiber is inserted into the first fiber tube and the second fiber tube after the first fiber tube and the second fiber tube have been coupled together.
  • the first optical and electric hybrid cable and the second optical and electric hybrid cable comprise one or more power cables respectively; and the connection device comprises one or more power cable connectors for electrically connecting the power cables of the first optical and electric hybrid cable and the second optical and electric hybrid cable respectively.
  • the first optical and electric hybrid cable and the second optical and electric hybrid cable comprise one or more fiber tubes respectively; and the connection device comprises one or more fiber tube connectors for coupling the fiber tubes of the first optical and electric hybrid cable and the second optical and electric hybrid cable respectively.
  • all power cables in the first optical and electric hybrid cable or the second optical and electric hybrid cable are wrapped in a metal shielding layer, and insulation filling materials are filled into the gap between the metal shielding layer and the power cables; and the fiber tubes of the first optical and electric hybrid cable or the second optical and electric hybrid cable are embedded in the insulation filling materials.
  • the first optical and electric hybrid cable and the second optical and electric hybrid cable comprise three power cables and three fiber tubes, respectively;
  • the connection device comprises three power cable connectors and three fiber tube connectors; and the three power cables of the first optical and electric hybrid cable or the second optical and electric hybrid cable are intertwined with each other, and tangential to each other with peripheries thereof.
  • the fiber tube connector comprises: a tubular body having a first insertion port and a second insertion port opposite to the first insertion port; a first resilient barb member provided on the inner wall of the first insertion port; and a second resilient barb member provided on the inner wall of the second insertion port.
  • the first fiber tube and the second fiber tube are inserted into the tubular body through the first insertion port and the second insertion port, respectively;
  • the first resilient barb member is configured to allow the first fiber tube to be inserted towards inside of the tubular body, and prevent the first fiber tube from being pulled out towards outside of the tubular body;
  • the second resilient barb member is configured to allow the second fiber tube to be inserted towards inside of the tubular body, and prevent the second fiber tube from being pulled out towards outside of the tubular body.
  • the fiber tube connector further comprises: a first resilient seal ring accommodated in the inner wall of the first insertion port for sealing an engagement interface between the first fiber tube inserted into the tubular body and the tubular body; and a second resilient seal ring accommodated in the inner wall of the second insertion port for sealing an engagement interface between the second fiber tube inserted into the tubular body and the tubular body.
  • the fiber tube connector further comprises: a first spacer provided on the inner wall of the first insertion port and on one side of the first resilient barb member facing to the inner wall of the tubular body to prevent the first resilient barb member from excessive deformation or damage; and a second spacer provided on the inner wall of the second insertion port and one side of the second resilient barb member facing to the inner wall of the tubular body to prevent the second resilient barb member from excessive deformation or damage.
  • the fiber tube connector further comprises: a first movable member mounted in the first insertion port of the tubular body and a second movable member mounted in the second insertion port of the tubular body.
  • the first movable member has a first pressure portion facing to the first resilient barb member, and the first movable member is movable from a first position for releasing the first resilient barb member to a second position for pressing the first resilient barb member.
  • the first resilient barb member When the first movable member is located at the first position, the first resilient barb member is held in a first state which allows the first fiber tube to be inserted towards inside of the tubular body, and prevent the first fiber tube from being pulled out towards outside of the tubular body; and when the first movable member is located at the second position, the first resilient barb member is pressed by the first pressure portion and held in a second state which allows the first fiber tube to be pulled out towards outside of the tubular body.
  • the second movable member has a second pressure portion facing to the second resilient barb member, and the second movable member is movable from a first position for releasing the second resilient barb member to a second position for pressing the second resilient barb member.
  • the second resilient barb member When the second movable member is located at the first position, the second resilient barb member is held in a first state which allows the second fiber tube to be inserted towards inside of the tubular body, and prevent the second fiber tube from being pulled out towards outside of the tubular body; and when the second movable member is located at the second position, the second resilient barb member is pressed by the second pressure portion and held in a second state which allows the second fiber tube to be pulled out towards outside of the tubular body.
  • the power cable connector comprises: a crimping tube constructed to crimp a conductor core of the first power cable of the first optical and electric hybrid cable with a conductor core of the second power cable of the second optical and electric hybrid cable; and an insulation sleeve constructed to be sleeved outside the crimping tube and insulation layers of the first and second power cables so that the insulation sleeve is acted as sections of insulation layers of the first and second power cables which are stripped.
  • connection device further comprises: a layer of waterproof band bound on a junction of the first optical and electric hybrid cable and the second optical and electric hybrid cable for wrapping hermetically the fiber tube connector and the power cable connector of the connection device therein.
  • a method for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable the first optical and electric hybrid cable having a first power cable and a first fiber tube for receiving a fiber therein, and the second optical and electric hybrid cable having a second power cable and a second fiber tube for receiving the fiber therein,
  • connection devices the fiber tubes in two optical and electric hybrid cables are firstly coupled with each other by means of the fiber tube connector, and then a whole fiber is inserted into a pair of fiber tubes, which have been coupled with each other, thus the optical connection of two optical and electric hybrid cables is achieved.
  • An optical connection of two optical and electric hybrid cables is achieved in a convenient and quick manner only using the fiber tube connector, instead of using a fiber connection box having fiber connector, fiber adapter, fiber-arranging tray, fiber-coiling tray, shrinkable tube, etc., therefore, the connection device according to the embodiments of the present invention is very simple in structure.
  • Fig. l is a schematic view showing a first optical and electric hybrid cable, a second optical and electric hybrid cable and a connection device for connecting the first optical and electric hybrid cable and the second optical and electric hybrid cable according to a first exemplary embodiment of the present invention
  • Fig.2a is a cross-section view of the first optical and electric hybrid cable and the second optical and electric hybrid cable according to the first exemplary embodiment of the present invention, wherein fibers are not inserted into fiber tubes of the first optical and electric hybrid cable and the second optical and electric hybrid cable;
  • Fig.2b is a cross-section view of the first optical and electric hybrid cable and the second optical and electric hybrid cable according to the first exemplary embodiment of the present invention, wherein the fibers are inserted into fiber tubes of the first optical and electric hybrid cable and the second optical and electric hybrid cable;
  • Fig.3 a is a schematic view showing that a first fiber tube and a second fiber tube in Fig.1 are coupled with each other via a fiber tube connector;
  • Fig.3b is a schematic view showing the fiber tube connector of the connection device in Fig.1 for coupling the first fiber tube with the second fiber tube;
  • Fig.4 is a schematic view showing a first optical and electric hybrid cable, a second optical and electric hybrid cable and a connection device for connecting the first optical and electric hybrid cable and the second optical and electric hybrid cable according to a second exemplary embodiment of the present invention
  • Fig.5 is a schematic view showing a first optical and electric hybrid cable, a second optical and electric hybrid cable and a connection device for connecting the first optical and electric hybrid cable and the second optical and electric hybrid cable according to a third exemplary embodiment of the present invention.
  • Fig.6 is a schematic view showing a first optical and electric hybrid cable, a second optical and electric hybrid cable and a connection device for connecting the first optical and electric hybrid cable and the second optical and electric hybrid cable according to a fourth exemplary embodiment of the present invention.
  • connection device for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable, the first optical and electric hybrid cable having a first power cable and a first fiber tube for receiving a fiber therein, and the second optical and electric hybrid cable having a second power cable and a second fiber tube for receiving the fiber therein.
  • the connection device comprises a fiber tube connector for coupling the first fiber tube with the second fiber tube, and a power cable connector for electrically connecting the first power cable and the second power cable, wherein the fiber is inserted into the first fiber tube and the second fiber tube after the first fiber tube and the second fiber tube have been coupled together.
  • Fig. l is a schematic view showing a first optical and electric hybrid cable 100, a second optical and electric hybrid cable 200 and a connection device for connecting the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 according to a first exemplary embodiment of the present invention
  • Fig.2a is a cross-section view of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 according to the first exemplary embodiment of the present invention, wherein fibers 130 are not inserted into fiber tubes 120, 220 of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200
  • Fig.2b is a cross-section view of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 according to the first exemplary embodiment of the present invention, wherein the fibers 130 are inserted into fiber tubes 120, 220 of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200.
  • the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 have the same internal structure, however, the present disclosure is not limited to the embodiments illustrated, the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 may have different internal structures.
  • the first optical and electric hybrid cable 100 comprises three first power cables 1 10 and three first fiber tubes 120.
  • three first power cables 1 10 are intertwined with each other, and three first power cables 1 10 are tangential to each other with peripheries thereof.
  • Three first power cables 1 10 are wrapped by a layer of first metal shielding layer 102 outside three first power cables 1 10, and insulation filling materials 101 are filled into the gap between the first metal shielding layer 102 and three first power cables 1 10.
  • three first fiber tubes 120 are embedded in the insulation filling materials 101.
  • the first optical and electric hybrid cable 100 further comprises a first insulation layer 103 wrapped outside the first metal shielding layer 102, a second metal shielding layer 104 wrapped outside the first insulation layer 103, and a outer sheath layer 105 wrapped outside the second metal shielding layer 104.
  • each first power cable 1 10 comprises a conductor cone 1 1 1, insulation material layer (not shown) wrapped outside the conductor cone 1 1 1, and a metal shielding layer wrapped outside the insulation material layer (not shown).
  • the fibers 130 may be inserted into the first fiber tubes 120, respectively, after the first fiber tubes 120 have been embedded in the insulation filling materials 101, thus it avoids the fibers 130 from being overheated and thereby being damaged when pouring the molten insulation filling materials 101.
  • the second optical and electric hybrid cable 200 comprises three second power cables 210 and three second fiber tubes 220.
  • three second power cables 210 are intertwined with each other, and three second power cables 210 are tangential to each other with peripheries thereof.
  • Three second power cables 210 are wrapped by a layer of first metal shielding layer 202 outside three second power cables 210, and insulation filling materials 201 are filled into the gap between the first metal shielding layer 202 and three second power cables 210.
  • three second fiber tubes 220 are embedded in the insulation filling materials 201.
  • the second optical and electric hybrid cable 200 further comprises a first insulation layer 203 wrapped outside the first metal shielding layer 202, a second metal shielding layer 204 wrapped outside the first insulation layer 203, and a outer sheath layer 205 wrapped outside the second metal shielding layer 204.
  • each second power cable 210 comprises a conductor cone 211, insulation material layer (not shown) wrapped outside the conductor cone 21 1, and a metal shielding layer wrapped outside the insulation material layer (not shown).
  • the fibers 130 may be inserted into the second fiber tubes 220, respectively, after the second fiber tubes 220 have been embedded in the insulation filling materials 201, thus it avoids the fibers 130 from being overheated and thereby being damaged when pouring molten insulation filling materials 201.
  • the connection device for connecting the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 primarily comprises three power cable connectors 400 and three fiber tube connectors 300.
  • Three power cable connectors 400 are constructed to electrically connect three first power cables 110 of the first optical and electric hybrid cable 100 and three second power cables 210 of the second optical and electric hybrid cable 200, respectively.
  • Three fiber tube connectors 300 are constructed to couple three first fiber tubes 120 of the first optical and electric hybrid cable 100 with three second fiber tubes 220 of the second optical and electric hybrid cable 200, respectively.
  • the fibers 130 are inserted into the first fiber tubes 120 and the second fiber tubes 220 after the first fiber tubes 120 and the second fiber tubes 220 have been coupled together, it thereby achieves the optical connection of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200.
  • the connection device may achieve the optical connection of two cables 100, 200 without using a fiber optic splicing box.
  • Fig.3 a is a schematic view showing that the first fiber tube 120 and the second fiber tube 220 in Fig.1 are coupled with each other via the fiber tube connector 300; and Fig.3b is a schematic view showing the fiber tube connector 300 of the connection device in Fig. l for coupling the first fiber tube 120 with the second fiber tube 220.
  • the fiber tube connector 300 primarily comprises: a tubular body 301 having a first insertion port (left port in Fig.3b) and a second insertion port (right port in Fig.3b) opposite to the first insertion port; a first resilient barb member 311 provided on the inner wall of the first insertion port; and a second resilient barb member 312 provided on the inner wall of the second insertion port.
  • the first fiber tube 120 and the second fiber tube 220 are inserted into the tubular body 301 through the first insertion port and the second insertion port, respectively.
  • the first resilient barb member 311 is configured to only allow the first fiber tube 120 to be inserted towards inside of the tubular body 301, and prevent the first fiber tube 120 from being pulled out towards outside of the tubular body 301; and similarly, the second resilient barb member 312 is configured to allow the second fiber tube 220 to be inserted towards inside of the tubular body 301, and prevent the second fiber tube 220 from being pulled out towards outside of the tubular body 301.
  • the fiber tube connector 300 further comprises a first resilient seal ring 321 provided on the inner wall of the first insertion port and a second resilient seal ring 322 provided on the inner wall of the second insertion port.
  • the first resilient seal ring 321 is constructed to seal an engagement interface between the tubular body 301 and the first fiber tube 120 inserted into the tubular body 301.
  • the second resilient seal ring 322 is constructed to seal an engagement interface between the tubular body 301 and the second fiber tube 220 inserted into the tubular body 301.
  • the fiber tube connector 300 further comprises a first spacer 331 provided on the inner wall of the first insertion port and a second spacer 332 provided on the inner wall of the second insertion port.
  • the first spacer 331 is provided on one side of the first resilient barb member 31 1 facing to the inner wall of the tubular body 301 to support the first resilient barb member 311 when being pressed outward radially, thereby preventing the first resilient barb member 311 from excessive deformation or damage.
  • the second spacer 332 is provided on one side of the second resilient barb member 312 facing to the inner wall of the tubular body 301 to support the first resilient barb member 311 when being pressed outward radially, thereby preventing the second resilient barb member 312 from excessive deformation or damage.
  • the fiber tube connector 300 further comprises: a first movable member 341 mounted in the first insertion port of the tubular body 301 and a second movable member 342 mounted in the second insertion port of the tubular body 301.
  • the first movable member 341 has a first pressure portion 3410 extending toward the first resilient barb member 311.
  • the first movable member 341 is movable from a first position for releasing the first resilient barb member 311 to a second position for pressing the first resilient barb member 311.
  • the first resilient barb member 311 is not pressed by the first pressure portion 3410 of the first movable member 341 and held in a first state which allows the first fiber tube 120 to be inserted towards inside of the tubular body 301, and prevent the first fiber tube 120 from being pulled out towards outside of the tubular body 301.
  • the first resilient barb member 311 is pressed by the first pressure portion 3410 and held in a second state which allows the first fiber tube 120 to be pulled out towards outside of the tubular body 301.
  • the second movable member 342 has a second pressure portion 3420 extending toward the second resilient barb member 312.
  • the second movable member 342 is movable from a first position for releasing the second resilient barb member 312 to a second position for pressing the second resilient barb member 312.
  • the second resilient barb member 312 is not pressed by the second pressure portion 3420 of the second movable member 342 and held in a first state which allows the second fiber tube 220 to be inserted towards inside of the tubular body 301, and prevent the second fiber tube 220 from being pulled out towards outside of the tubular body 301.
  • the second resilient barb member 312 is pressed by the second pressure portion 3420 and held in a second state which allows the second fiber tube 220 to be pulled out towards outside of the tubular body 301.
  • the fiber tube connector is not limited to the embodiment illustrated, it also may have any other structures as long as two fiber tubes may be coupled with each other.
  • the power cable connector 400 may comprise a crimping tube (not shown) and an insulation sleeve (not shown).
  • the crimping tube is constructed to crimp the conductor core 111 (see Fig.2) of the first power cable 110 of the first optical and electric hybrid cable 100 with the conductor core 121 (see Fig.2) of the second power cable 120 of the second optical and electric hybrid cable 200.
  • the insulation sleeve is constructed to be sleeved outside the crimping tube and insulation layers of the first and second power cables 110, 210 so as to be acted as sections of insulation layers of the first and second power cables 110, 210 which are stripped.
  • any types of power cable connectors in the prior art may be used as the power cable connector in the present disclosure, as long as two power cables may be connected electrically.
  • connection device for connecting the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 further comprises a layer of waterproof band bound on a junction of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 for wrapping hermetically the fiber tube connector 300 and the power cable connector 400 therein.
  • a method for connecting a first optical and electric hybrid cable 100 and a second optical and electric hybrid cable 200 comprising steps of:
  • Fig.4 is a schematic view showing a first optical and electric hybrid cable 100', a second optical and electric hybrid cable 200' and a connection device for connecting the first optical and electric hybrid cable 100' and the second optical and electric hybrid cable 200' according to a second exemplary embodiment of the present invention.
  • each of the first optical and electric hybrid cable 100' and the second optical and electric hybrid cable 200' comprises three power cables 110 and two fiber tubes 120.
  • the connection device for connecting the first optical and electric hybrid cable 100' and the second optical and electric hybrid cable 200' comprises three power cable connectors 400 and two fiber tube connectors 300.
  • each of the first optical and electric hybrid cable 100' and the second optical and electric hybrid cable 200' only comprises two fiber tubes 120, and the connection device for connecting the first optical and electric hybrid cable 100' and the second optical and electric hybrid cable 200' only comprises two fiber tube connectors 300.
  • the second embodiment shown in Fig.4 is identical to the first embodiment shown in Fig.1.
  • Fig.5 is a schematic view showing a first optical and electric hybrid cable 100", a second optical and electric hybrid cable 200" and a connection device for connecting the first optical and electric hybrid cable 100" and the second optical and electric hybrid cable 200" according to a third exemplary embodiment of the present invention.
  • each of the first optical and electric hybrid cable 100" and the second optical and electric hybrid cable 200" comprises three power cables 110 and one fiber tube 120.
  • the connection device for connecting the first optical and electric hybrid cable 100" and the second optical and electric hybrid cable 200" comprises three power cable connectors 400 and one fiber tube connector 300.
  • the main difference of the third embodiment shown in Fig.5 from the first embodiment shown in Fig.1 lies in that each of the first optical and electric hybrid cable 100" and the second optical and electric hybrid cable 200" only comprises one fiber tube 120, and the connection device for connecting the first optical and electric hybrid cable 100" and the second optical and electric hybrid cable 200" only comprises one fiber tube connector 300. Except that, the third embodiment shown in Fig.5 is identical to the first embodiment shown in Fig.1.
  • Fig.6 is a schematic view showing a first optical and electric hybrid cable 100"', a second optical and electric hybrid cable 200"' and a connection device for connecting the first optical and electric hybrid cable 100"' and the second optical and electric hybrid cable 200" ' according to a fourth exemplary embodiment of the present invention.
  • each of the first optical and electric hybrid cable 100" ' and the second optical and electric hybrid cable 200"' comprises one power cable 110 and one fiber tube 120.
  • the connection device for connecting the first optical and electric hybrid cable 100"' and the second optical and electric hybrid cable 200" ' comprises one power cable connector 400 and one fiber tube connector 300.
  • each of the first optical and electric hybrid cable 100" ' and the second optical and electric hybrid cable 200" ' only comprises one power cable 110 and one fiber tube 120
  • the connection device for connecting the first optical and electric hybrid cable 100" ' and the second optical and electric hybrid cable 200" ' only comprises one power cable connector 400 and one fiber tube connector 300.
  • the fourth embodiment shown in Fig.6 is identical to the first embodiment shown in Fig.1.
  • each of the first optical and electric hybrid cable and the second optical and electric hybrid cable may comprise any number of power cables and any number of fiber tubes
  • the connection device may comprise any number of power cable connectors and any number of fiber tube connectors.
  • the number of power cables and the number of fiber tubes accommodated in the first optical and electric hybrid cable and the second optical and electric hybrid cable, the number of power cable connectors and the number of fiber tube connectors of the connection device may depend on requirements, rather than being limited to the embodiments shown in Figs.1-6.
  • each optical and electric hybrid cable may comprise two, four or more power cables, and each optical and electric hybrid cable may comprise four, five or more fiber tubes.
  • the connection device may comprise two, four or more power cable connectors and four, five or more fiber tube connectors.

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Abstract

A connection device for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable is disclosed. The first optical and electric hybrid cable has a first power cable and a first fiber tube for receiving a fiber therein, and the second optical and electric hybrid cable has a second power cable and a second fiber tube for receiving the fiber therein. The connection device comprises a fiber tube connector for coupling the first fiber tube with the second fiber tube,and a power cable connector for electrically connecting the first power cable and the second power cable. The fiber is inserted into the first fiber tube and the second fiber tube after the first fiber tube and the second fiber tube have been coupled together. An optical connection of two optical and electric hybrid cables is achieved in a convenient and quick manner only using the fiber tube connector, instead of using a fiber connection box having fiber connector, fiber adapter, fiber-arranging tray, fiber-coiling tray, shrinkable tube, etc., therefore, the disclosed connection device is very simple in structure.

Description

CONNECTION DEVICE FOR OPTICAL AND ELECTRIC HYBRID CABLE CROSS-REFERENCE TO RELATED APPLICATION
This application claims the benefit of Chinese Patent Application No. 201410338572.0 filed on July 16, 2014 in the State Intellectual Property Office of China, the whole disclosure of which is incorporated herein by reference. BACKGROUND OF THE INVENTION
Field of the Invention
The present disclosure relates to a connection device for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable.
Description of the Related Art
In some situations for special applications, there exists a need for an optical and electric hybrid cable, that is, a cable having both power cable and fiber. For the connection of such optical and electric hybrid cables, the applicant of the present application has proposed a technical solution previously, in which the electrical connection of the power cables contained in two optical and electric hybrid cables is achieved by means of a conventional crimping method, and the optical splicing of the fibers contained in two optical and electric hybrid cables is achieved by means of a fiber optic splicing box. It is complicated to splice the fibers of two optical and electric hybrid cables, in particular, an end of each fiber of the optical and electric hybrid cables is firstly connected to a fiber optic connector, and then two fiber optic connectors with fibers are coupled with each other via a fiber adapter, thus the optical splicing of the fibers in two optical and electric hybrid cables is achieved. Another technical solution is proposed prior to the above technical solution set forth by the applicant of the present application, in which the optical splicing of the fibers in two optical and electric hybrid cables is achieved by means of butt fusion. However, such butt fusion process encounters disadvantages such as process complexity and high cost, since fiber-arranging tray, fiber-coiling tray, shrinkable tube, etc. are required.
In the technical solutions described above, it is necessary to adopt a special fiber optic splicing box to achieve the optical splicing of the fibers in two optical and electric hybrid cables, causing complicated structure, difficult operation, and high cost. SUMMARY OF THE INVENTION
The purpose of the present disclosure is intended to solve at least one aspect of the above issues and faults in the prior art.
One object of the present disclosure is to provide a connection device for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable with a simple structure.
According to an aspect of the present disclosure, there is provided a connection device for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable. The first optical and electric hybrid cable has a first power cable and a first fiber tube for receiving a fiber therein, and the second optical and electric hybrid cable has a second power cable and a second fiber tube for receiving the fiber therein. The connection device comprises a fiber tube connector for coupling the first fiber tube with the second fiber tube, and a power cable connector for electrically connecting the first power cable and the second power cable, wherein the fiber is inserted into the first fiber tube and the second fiber tube after the first fiber tube and the second fiber tube have been coupled together.
According to an exemplary embodiment of the present invention, the first optical and electric hybrid cable and the second optical and electric hybrid cable comprise one or more power cables respectively; and the connection device comprises one or more power cable connectors for electrically connecting the power cables of the first optical and electric hybrid cable and the second optical and electric hybrid cable respectively.
According to another exemplary embodiment of the present invention, the first optical and electric hybrid cable and the second optical and electric hybrid cable comprise one or more fiber tubes respectively; and the connection device comprises one or more fiber tube connectors for coupling the fiber tubes of the first optical and electric hybrid cable and the second optical and electric hybrid cable respectively.
According to another exemplary embodiment of the present invention, all power cables in the first optical and electric hybrid cable or the second optical and electric hybrid cable are wrapped in a metal shielding layer, and insulation filling materials are filled into the gap between the metal shielding layer and the power cables; and the fiber tubes of the first optical and electric hybrid cable or the second optical and electric hybrid cable are embedded in the insulation filling materials.
According to another exemplary embodiment of the present invention, the first optical and electric hybrid cable and the second optical and electric hybrid cable comprise three power cables and three fiber tubes, respectively; the connection device comprises three power cable connectors and three fiber tube connectors; and the three power cables of the first optical and electric hybrid cable or the second optical and electric hybrid cable are intertwined with each other, and tangential to each other with peripheries thereof. According to another exemplary embodiment of the present invention, the fiber tube connector comprises: a tubular body having a first insertion port and a second insertion port opposite to the first insertion port; a first resilient barb member provided on the inner wall of the first insertion port; and a second resilient barb member provided on the inner wall of the second insertion port. The first fiber tube and the second fiber tube are inserted into the tubular body through the first insertion port and the second insertion port, respectively; the first resilient barb member is configured to allow the first fiber tube to be inserted towards inside of the tubular body, and prevent the first fiber tube from being pulled out towards outside of the tubular body; and the second resilient barb member is configured to allow the second fiber tube to be inserted towards inside of the tubular body, and prevent the second fiber tube from being pulled out towards outside of the tubular body.
According to another exemplary embodiment of the present invention, the fiber tube connector further comprises: a first resilient seal ring accommodated in the inner wall of the first insertion port for sealing an engagement interface between the first fiber tube inserted into the tubular body and the tubular body; and a second resilient seal ring accommodated in the inner wall of the second insertion port for sealing an engagement interface between the second fiber tube inserted into the tubular body and the tubular body.
According to another exemplary embodiment of the present invention, the fiber tube connector further comprises: a first spacer provided on the inner wall of the first insertion port and on one side of the first resilient barb member facing to the inner wall of the tubular body to prevent the first resilient barb member from excessive deformation or damage; and a second spacer provided on the inner wall of the second insertion port and one side of the second resilient barb member facing to the inner wall of the tubular body to prevent the second resilient barb member from excessive deformation or damage.
According to another exemplary embodiment of the present invention, the fiber tube connector further comprises: a first movable member mounted in the first insertion port of the tubular body and a second movable member mounted in the second insertion port of the tubular body. The first movable member has a first pressure portion facing to the first resilient barb member, and the first movable member is movable from a first position for releasing the first resilient barb member to a second position for pressing the first resilient barb member. When the first movable member is located at the first position, the first resilient barb member is held in a first state which allows the first fiber tube to be inserted towards inside of the tubular body, and prevent the first fiber tube from being pulled out towards outside of the tubular body; and when the first movable member is located at the second position, the first resilient barb member is pressed by the first pressure portion and held in a second state which allows the first fiber tube to be pulled out towards outside of the tubular body. The second movable member has a second pressure portion facing to the second resilient barb member, and the second movable member is movable from a first position for releasing the second resilient barb member to a second position for pressing the second resilient barb member. When the second movable member is located at the first position, the second resilient barb member is held in a first state which allows the second fiber tube to be inserted towards inside of the tubular body, and prevent the second fiber tube from being pulled out towards outside of the tubular body; and when the second movable member is located at the second position, the second resilient barb member is pressed by the second pressure portion and held in a second state which allows the second fiber tube to be pulled out towards outside of the tubular body.
According to another exemplary embodiment of the present invention, the power cable connector comprises: a crimping tube constructed to crimp a conductor core of the first power cable of the first optical and electric hybrid cable with a conductor core of the second power cable of the second optical and electric hybrid cable; and an insulation sleeve constructed to be sleeved outside the crimping tube and insulation layers of the first and second power cables so that the insulation sleeve is acted as sections of insulation layers of the first and second power cables which are stripped.
According to another exemplary embodiment of the present invention, the connection device further comprises: a layer of waterproof band bound on a junction of the first optical and electric hybrid cable and the second optical and electric hybrid cable for wrapping hermetically the fiber tube connector and the power cable connector of the connection device therein.
According to another aspect of the present disclosure, there is provided a method for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable, the first optical and electric hybrid cable having a first power cable and a first fiber tube for receiving a fiber therein, and the second optical and electric hybrid cable having a second power cable and a second fiber tube for receiving the fiber therein,
the method comprising steps of:
providing a connection device described in the above embodiments;
coupling the first fiber tube with the second fiber tube by means of the fiber tube connector of the connection device, and electrically connecting the first power cable and the second power cable by means of the power cable connector of the connection device; and inserting the fiber into the first fiber tube and the second fiber tube, which have been coupled with each other.
In the connection devices according to various embodiments of the present invention, the fiber tubes in two optical and electric hybrid cables are firstly coupled with each other by means of the fiber tube connector, and then a whole fiber is inserted into a pair of fiber tubes, which have been coupled with each other, thus the optical connection of two optical and electric hybrid cables is achieved. An optical connection of two optical and electric hybrid cables is achieved in a convenient and quick manner only using the fiber tube connector, instead of using a fiber connection box having fiber connector, fiber adapter, fiber-arranging tray, fiber-coiling tray, shrinkable tube, etc., therefore, the connection device according to the embodiments of the present invention is very simple in structure.
Other characteristics and advantages of the present disclosure will be made clear by the following detailed description, the comprehension of which will be facilitated by reference to the attached drawings.
BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be further described in detail with reference to the accompanying drawings, in which:
Fig. l is a schematic view showing a first optical and electric hybrid cable, a second optical and electric hybrid cable and a connection device for connecting the first optical and electric hybrid cable and the second optical and electric hybrid cable according to a first exemplary embodiment of the present invention;
Fig.2a is a cross-section view of the first optical and electric hybrid cable and the second optical and electric hybrid cable according to the first exemplary embodiment of the present invention, wherein fibers are not inserted into fiber tubes of the first optical and electric hybrid cable and the second optical and electric hybrid cable;
Fig.2b is a cross-section view of the first optical and electric hybrid cable and the second optical and electric hybrid cable according to the first exemplary embodiment of the present invention, wherein the fibers are inserted into fiber tubes of the first optical and electric hybrid cable and the second optical and electric hybrid cable;
Fig.3 a is a schematic view showing that a first fiber tube and a second fiber tube in Fig.1 are coupled with each other via a fiber tube connector;
Fig.3b is a schematic view showing the fiber tube connector of the connection device in Fig.1 for coupling the first fiber tube with the second fiber tube;
Fig.4 is a schematic view showing a first optical and electric hybrid cable, a second optical and electric hybrid cable and a connection device for connecting the first optical and electric hybrid cable and the second optical and electric hybrid cable according to a second exemplary embodiment of the present invention;
Fig.5 is a schematic view showing a first optical and electric hybrid cable, a second optical and electric hybrid cable and a connection device for connecting the first optical and electric hybrid cable and the second optical and electric hybrid cable according to a third exemplary embodiment of the present invention; and
Fig.6 is a schematic view showing a first optical and electric hybrid cable, a second optical and electric hybrid cable and a connection device for connecting the first optical and electric hybrid cable and the second optical and electric hybrid cable according to a fourth exemplary embodiment of the present invention.
DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS OF THE IVENTION
Exemplary embodiments of the present disclosure will be described hereinafter in detail with reference to the attached drawings, wherein the like reference numerals refer to the like elements. The present disclosure may, however, be embodied in many different forms and should not be construed as being limited to the embodiment set forth herein; rather, these embodiments are provided so that the present disclosure will be thorough and complete, and will fully convey the concept of the disclosure to those skilled in the art.
In the following detailed description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of the disclosed embodiments. It will be apparent, however, that one or more embodiments may be practiced without these specific details. In other instances, well-known structures and devices are schematically shown in order to simplify the drawing.
According to a general concept of the present disclosure, there is provided a connection device for connecting a first optical and electric hybrid cable and a second optical and electric hybrid cable, the first optical and electric hybrid cable having a first power cable and a first fiber tube for receiving a fiber therein, and the second optical and electric hybrid cable having a second power cable and a second fiber tube for receiving the fiber therein. The connection device comprises a fiber tube connector for coupling the first fiber tube with the second fiber tube, and a power cable connector for electrically connecting the first power cable and the second power cable, wherein the fiber is inserted into the first fiber tube and the second fiber tube after the first fiber tube and the second fiber tube have been coupled together.
Fig. l is a schematic view showing a first optical and electric hybrid cable 100, a second optical and electric hybrid cable 200 and a connection device for connecting the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 according to a first exemplary embodiment of the present invention; Fig.2a is a cross-section view of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 according to the first exemplary embodiment of the present invention, wherein fibers 130 are not inserted into fiber tubes 120, 220 of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200; and Fig.2b is a cross-section view of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 according to the first exemplary embodiment of the present invention, wherein the fibers 130 are inserted into fiber tubes 120, 220 of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200. As shown in Figs.2a and 2b, in an exemplary embodiment of the present invention, the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 have the same internal structure, however, the present disclosure is not limited to the embodiments illustrated, the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 may have different internal structures.
Further referring to Figs.2a and 2b, in the embodiment illustrated, the first optical and electric hybrid cable 100 comprises three first power cables 1 10 and three first fiber tubes 120. As shown clearly in Fig.2a, three first power cables 1 10 are intertwined with each other, and three first power cables 1 10 are tangential to each other with peripheries thereof. Three first power cables 1 10 are wrapped by a layer of first metal shielding layer 102 outside three first power cables 1 10, and insulation filling materials 101 are filled into the gap between the first metal shielding layer 102 and three first power cables 1 10. As manufacturing the first optical and electric hybrid cable 100, three first fiber tubes 120 are embedded in the insulation filling materials 101.
In the embodiment shown in Fig.2a, the first optical and electric hybrid cable 100 further comprises a first insulation layer 103 wrapped outside the first metal shielding layer 102, a second metal shielding layer 104 wrapped outside the first insulation layer 103, and a outer sheath layer 105 wrapped outside the second metal shielding layer 104. As shown in Fig.2a, each first power cable 1 10 comprises a conductor cone 1 1 1, insulation material layer (not shown) wrapped outside the conductor cone 1 1 1, and a metal shielding layer wrapped outside the insulation material layer (not shown).
In an exemplary embodiment of the present invention, the fibers 130 may be inserted into the first fiber tubes 120, respectively, after the first fiber tubes 120 have been embedded in the insulation filling materials 101, thus it avoids the fibers 130 from being overheated and thereby being damaged when pouring the molten insulation filling materials 101.
Similarly, in the embodiment shown in Figs.2a and 2b, the second optical and electric hybrid cable 200 comprises three second power cables 210 and three second fiber tubes 220. As shown clearly in Fig.2a, three second power cables 210 are intertwined with each other, and three second power cables 210 are tangential to each other with peripheries thereof. Three second power cables 210 are wrapped by a layer of first metal shielding layer 202 outside three second power cables 210, and insulation filling materials 201 are filled into the gap between the first metal shielding layer 202 and three second power cables 210. As manufacturing the second optical and electric hybrid cable 200, three second fiber tubes 220 are embedded in the insulation filling materials 201.
In the embodiment shown in Fig.2a, the second optical and electric hybrid cable 200 further comprises a first insulation layer 203 wrapped outside the first metal shielding layer 202, a second metal shielding layer 204 wrapped outside the first insulation layer 203, and a outer sheath layer 205 wrapped outside the second metal shielding layer 204. As shown in Fig.2a, each second power cable 210 comprises a conductor cone 211, insulation material layer (not shown) wrapped outside the conductor cone 21 1, and a metal shielding layer wrapped outside the insulation material layer (not shown).
In an exemplary embodiment of the present invention, the fibers 130 may be inserted into the second fiber tubes 220, respectively, after the second fiber tubes 220 have been embedded in the insulation filling materials 201, thus it avoids the fibers 130 from being overheated and thereby being damaged when pouring molten insulation filling materials 201.
Further referring to Fig.1, in the embodiment illustrated, the connection device for connecting the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 primarily comprises three power cable connectors 400 and three fiber tube connectors 300. Three power cable connectors 400 are constructed to electrically connect three first power cables 110 of the first optical and electric hybrid cable 100 and three second power cables 210 of the second optical and electric hybrid cable 200, respectively. Three fiber tube connectors 300 are constructed to couple three first fiber tubes 120 of the first optical and electric hybrid cable 100 with three second fiber tubes 220 of the second optical and electric hybrid cable 200, respectively.
In an exemplary embodiment of the present invention, the fibers 130 are inserted into the first fiber tubes 120 and the second fiber tubes 220 after the first fiber tubes 120 and the second fiber tubes 220 have been coupled together, it thereby achieves the optical connection of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200. Thus, the connection device may achieve the optical connection of two cables 100, 200 without using a fiber optic splicing box.
Fig.3 a is a schematic view showing that the first fiber tube 120 and the second fiber tube 220 in Fig.1 are coupled with each other via the fiber tube connector 300; and Fig.3b is a schematic view showing the fiber tube connector 300 of the connection device in Fig. l for coupling the first fiber tube 120 with the second fiber tube 220.
As shown in Figs. l, 3a and 3b, in an exemplary embodiment of the present invention, the fiber tube connector 300 primarily comprises: a tubular body 301 having a first insertion port (left port in Fig.3b) and a second insertion port (right port in Fig.3b) opposite to the first insertion port; a first resilient barb member 311 provided on the inner wall of the first insertion port; and a second resilient barb member 312 provided on the inner wall of the second insertion port.
In the embodiment illustrated, as shown in Figs. l and 3b, the first fiber tube 120 and the second fiber tube 220 are inserted into the tubular body 301 through the first insertion port and the second insertion port, respectively. The first resilient barb member 311 is configured to only allow the first fiber tube 120 to be inserted towards inside of the tubular body 301, and prevent the first fiber tube 120 from being pulled out towards outside of the tubular body 301; and similarly, the second resilient barb member 312 is configured to allow the second fiber tube 220 to be inserted towards inside of the tubular body 301, and prevent the second fiber tube 220 from being pulled out towards outside of the tubular body 301.
Further referring to Fig.3b, in the embodiment illustrated, the fiber tube connector 300 further comprises a first resilient seal ring 321 provided on the inner wall of the first insertion port and a second resilient seal ring 322 provided on the inner wall of the second insertion port. The first resilient seal ring 321 is constructed to seal an engagement interface between the tubular body 301 and the first fiber tube 120 inserted into the tubular body 301. The second resilient seal ring 322 is constructed to seal an engagement interface between the tubular body 301 and the second fiber tube 220 inserted into the tubular body 301.
Further referring to Fig.3b, in the embodiment illustrated, the fiber tube connector 300 further comprises a first spacer 331 provided on the inner wall of the first insertion port and a second spacer 332 provided on the inner wall of the second insertion port. The first spacer 331 is provided on one side of the first resilient barb member 31 1 facing to the inner wall of the tubular body 301 to support the first resilient barb member 311 when being pressed outward radially, thereby preventing the first resilient barb member 311 from excessive deformation or damage. The second spacer 332 is provided on one side of the second resilient barb member 312 facing to the inner wall of the tubular body 301 to support the first resilient barb member 311 when being pressed outward radially, thereby preventing the second resilient barb member 312 from excessive deformation or damage.
Further referring to Fig.3b, in the embodiment illustrated, the fiber tube connector 300 further comprises: a first movable member 341 mounted in the first insertion port of the tubular body 301 and a second movable member 342 mounted in the second insertion port of the tubular body 301.
In an exemplary embodiment of the present invention, the first movable member 341 has a first pressure portion 3410 extending toward the first resilient barb member 311. The first movable member 341 is movable from a first position for releasing the first resilient barb member 311 to a second position for pressing the first resilient barb member 311. When the first movable member 341 is located at the first position, the first resilient barb member 311 is not pressed by the first pressure portion 3410 of the first movable member 341 and held in a first state which allows the first fiber tube 120 to be inserted towards inside of the tubular body 301, and prevent the first fiber tube 120 from being pulled out towards outside of the tubular body 301. When the first movable member 341 is located at the second position, the first resilient barb member 311 is pressed by the first pressure portion 3410 and held in a second state which allows the first fiber tube 120 to be pulled out towards outside of the tubular body 301.
Similarly, in an exemplary embodiment of the present invention, the second movable member 342 has a second pressure portion 3420 extending toward the second resilient barb member 312. The second movable member 342 is movable from a first position for releasing the second resilient barb member 312 to a second position for pressing the second resilient barb member 312. When the second movable member 342 is located at the first position, the second resilient barb member 312 is not pressed by the second pressure portion 3420 of the second movable member 342 and held in a first state which allows the second fiber tube 220 to be inserted towards inside of the tubular body 301, and prevent the second fiber tube 220 from being pulled out towards outside of the tubular body 301. When the second movable member 342 is located at the second position, the second resilient barb member 312 is pressed by the second pressure portion 3420 and held in a second state which allows the second fiber tube 220 to be pulled out towards outside of the tubular body 301.
It is noted that, in the present disclosure, the fiber tube connector is not limited to the embodiment illustrated, it also may have any other structures as long as two fiber tubes may be coupled with each other.
As shown in Fig. l, in an exemplary embodiment of the present invention, the power cable connector 400 may comprise a crimping tube (not shown) and an insulation sleeve (not shown). The crimping tube is constructed to crimp the conductor core 111 (see Fig.2) of the first power cable 110 of the first optical and electric hybrid cable 100 with the conductor core 121 (see Fig.2) of the second power cable 120 of the second optical and electric hybrid cable 200. The insulation sleeve is constructed to be sleeved outside the crimping tube and insulation layers of the first and second power cables 110, 210 so as to be acted as sections of insulation layers of the first and second power cables 110, 210 which are stripped.
It is noted that, any types of power cable connectors in the prior art may be used as the power cable connector in the present disclosure, as long as two power cables may be connected electrically.
Although not shown, in an exemplary embodiment of the present invention, the connection device for connecting the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 further comprises a layer of waterproof band bound on a junction of the first optical and electric hybrid cable 100 and the second optical and electric hybrid cable 200 for wrapping hermetically the fiber tube connector 300 and the power cable connector 400 therein.
According to another embodiment of the present invention, there is provided a method for connecting a first optical and electric hybrid cable 100 and a second optical and electric hybrid cable 200, comprising steps of:
providing a connection device described in the above embodiments;
coupling the first fiber tube 120 with the second fiber tube 220 by means of the fiber tube connector 300 of the connection device, and electrically connecting the first power cable 110 and the second power cable 210 by means of the power cable connector 400 of the connection device; and inserting the fiber 130 into the first fiber tube 120 and the second fiber tube 220, which have been coupled with each other.
Fig.4 is a schematic view showing a first optical and electric hybrid cable 100', a second optical and electric hybrid cable 200' and a connection device for connecting the first optical and electric hybrid cable 100' and the second optical and electric hybrid cable 200' according to a second exemplary embodiment of the present invention.
In the embodiment shown in Fig.4, each of the first optical and electric hybrid cable 100' and the second optical and electric hybrid cable 200' comprises three power cables 110 and two fiber tubes 120. Accordingly, in the embodiment shown in Fig.4, the connection device for connecting the first optical and electric hybrid cable 100' and the second optical and electric hybrid cable 200' comprises three power cable connectors 400 and two fiber tube connectors 300.
The main difference of the second embodiment shown in Fig.4 from the first embodiment shown in Fig.1 lies in that each of the first optical and electric hybrid cable 100' and the second optical and electric hybrid cable 200' only comprises two fiber tubes 120, and the connection device for connecting the first optical and electric hybrid cable 100' and the second optical and electric hybrid cable 200' only comprises two fiber tube connectors 300. Except that, the second embodiment shown in Fig.4 is identical to the first embodiment shown in Fig.1.
Fig.5 is a schematic view showing a first optical and electric hybrid cable 100", a second optical and electric hybrid cable 200" and a connection device for connecting the first optical and electric hybrid cable 100" and the second optical and electric hybrid cable 200" according to a third exemplary embodiment of the present invention.
In the embodiment shown in Fig.5, each of the first optical and electric hybrid cable 100" and the second optical and electric hybrid cable 200" comprises three power cables 110 and one fiber tube 120. Accordingly, in the embodiment shown in Fig.5, the connection device for connecting the first optical and electric hybrid cable 100" and the second optical and electric hybrid cable 200" comprises three power cable connectors 400 and one fiber tube connector 300.
The main difference of the third embodiment shown in Fig.5 from the first embodiment shown in Fig.1 lies in that each of the first optical and electric hybrid cable 100" and the second optical and electric hybrid cable 200" only comprises one fiber tube 120, and the connection device for connecting the first optical and electric hybrid cable 100" and the second optical and electric hybrid cable 200" only comprises one fiber tube connector 300. Except that, the third embodiment shown in Fig.5 is identical to the first embodiment shown in Fig.1.
Fig.6 is a schematic view showing a first optical and electric hybrid cable 100"', a second optical and electric hybrid cable 200"' and a connection device for connecting the first optical and electric hybrid cable 100"' and the second optical and electric hybrid cable 200" ' according to a fourth exemplary embodiment of the present invention.
In the embodiment shown in Fig.6, each of the first optical and electric hybrid cable 100" ' and the second optical and electric hybrid cable 200"' comprises one power cable 110 and one fiber tube 120. Accordingly, in the embodiment shown in Fig.6, the connection device for connecting the first optical and electric hybrid cable 100"' and the second optical and electric hybrid cable 200" ' comprises one power cable connector 400 and one fiber tube connector 300.
The main difference of the fourth embodiment shown in Fig.6 from the first embodiment shown in Fig. l lies in that each of the first optical and electric hybrid cable 100" ' and the second optical and electric hybrid cable 200" ' only comprises one power cable 110 and one fiber tube 120, and the connection device for connecting the first optical and electric hybrid cable 100" ' and the second optical and electric hybrid cable 200" ' only comprises one power cable connector 400 and one fiber tube connector 300. Except that, the fourth embodiment shown in Fig.6 is identical to the first embodiment shown in Fig.1.
It is noted that, the present disclosure is not limited to the embodiments as illustrated, each of the first optical and electric hybrid cable and the second optical and electric hybrid cable may comprise any number of power cables and any number of fiber tubes, accordingly, the connection device may comprise any number of power cable connectors and any number of fiber tube connectors. In other words, the number of power cables and the number of fiber tubes accommodated in the first optical and electric hybrid cable and the second optical and electric hybrid cable, the number of power cable connectors and the number of fiber tube connectors of the connection device may depend on requirements, rather than being limited to the embodiments shown in Figs.1-6. For example, each optical and electric hybrid cable may comprise two, four or more power cables, and each optical and electric hybrid cable may comprise four, five or more fiber tubes. Accordingly, the connection device may comprise two, four or more power cable connectors and four, five or more fiber tube connectors.
It should be appreciated for those skilled in this art that the above embodiments are intended to be illustrated, and not restrictive. For example, many modifications may be made to the above embodiments by those skilled in this art, and various features described in different embodiments may be freely combined with each other without conflicting in configuration or principle.
Although several exemplary embodiments have been shown and described, it would be appreciated by those skilled in the art that various changes or modifications may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
As used herein, an element recited in the singular and proceeded with the word "a" or "an" should be understood as not excluding plural of said elements or steps, unless such exclusion is explicitly stated. Furthermore, references to "one embodiment" of the present invention are not intended to be interpreted as excluding the existence of additional embodiments that also incorporate the recited features. Moreover, unless explicitly stated to the contrary, embodiments "comprising" or "having" an element or a plurality of elements having a particular property may include additional such elements not having that property.

Claims

What is claimed is,
1. A connection device for connecting a first optical and electric hybrid cable (100) and a second optical and electric hybrid cable (200), the first optical and electric hybrid cable (100) having a first power cable (110) and a first fiber tube (120) for receiving a fiber (130) therein, and the second optical and electric hybrid cable (200) having a second power cable (210) and a second fiber tube (220) for receiving the fiber (130) therein,
the connection device comprising:
a fiber tube connector (300) for coupling the first fiber tube (120) with the second fiber tube (220); and
a power cable connector (400) for electrically connecting the first power cable (110) and the second power cable (210),
wherein the fiber (130) is inserted into the first fiber tube (120) and the second fiber tube (220) after the first fiber tube (120) and the second fiber tube (220) have been coupled together.
2. The connection device according to claim 1, wherein
the first optical and electric hybrid cable (100) and the second optical and electric hybrid cable (200) comprise one or more power cables (110, 210), respectively; and
the connection device comprises one or more power cable connectors (400) for electrically connecting the power cables (110, 210) of the first optical and electric hybrid cable (100) and the second optical and electric hybrid cable (200), respectively.
3. The connection device according to claim 2, wherein
the first optical and electric hybrid cable (100) and the second optical and electric hybrid cable (200) comprise one or more fiber tubes (120, 220), respectively; and
the connection device comprises one or more fiber tube connectors (300) for coupling the fiber tubes (120, 220) of the first optical and electric hybrid cable (100) and the second optical and electric hybrid cable (200), respectively.
4. The connection device according to claim 3, wherein
all power cables (110, 210) in the first optical and electric hybrid cable (100) or the second optical and electric hybrid cable (200) are wrapped in a metal shielding layer (102, 202), and insulation filling materials (101, 201) are filled into the gap between the metal shielding layer and the power cables (110, 210); and
the fiber tubes (120, 220) of the first optical and electric hybrid cable (100) or the second optical and electric hybrid cable (200) are embedded in the insulation filling materials (101, 201).
5. The connection device according to claim 4, wherein
the first optical and electric hybrid cable (100) and the second optical and electric hybrid cable (200) comprise three power cables (110, 210) and three fiber tubes (120, 220), respectively;
the connection device comprises three power cable connectors (400) and three fiber tube connectors (300); and
the three power cables (110, 210) of the first optical and electric hybrid cable (100) or the second optical and electric hybrid cable (200) are intertwined with each other, and tangential to each other with peripheries thereof.
6. The connection device according to claim 1, wherein the fiber tube connector (300) comprises:
a tubular body (301) having a first insertion port and a second insertion port opposite to the first insertion port;
a first resilient barb member (31 1) provided on the inner wall of the first insertion port; and
a second resilient barb member (312) provided on the inner wall of the second insertion port, wherein
the first fiber tube (120) and the second fiber tube (220) are inserted into the tubular body (301) through the first insertion port and the second insertion port, respectively;
the first resilient barb member (31 1) is configured to allow the first fiber tube (120) to be inserted towards inside of the tubular body (301), and prevent the first fiber tube from being pulled out towards outside of the tubular body (301); and
the second resilient barb member (312) is configured to allow the second fiber tube
(220) to be inserted towards inside of the tubular body (301), and prevent the second fiber tube from being pulled out towards outside of the tubular body (301).
7. The connection device according to claim 6, wherein the fiber tube connector (300) further comprises:
a first resilient seal ring (321) provided on the inner wall of the first insertion port for sealing an engagement interface between the tubular body (301) and the first fiber tube (120) inserted into the tubular body; and
a second resilient seal ring (322) provided on the inner wall of the second insertion port for sealing an engagement interface between the tubular body (301) and the second fiber tube (220) inserted into the tubular body.
8. The connection device according to claim 7, wherein the fiber tube connector (300) further comprises:
a first spacer (331) provided on the inner wall of the first insertion port and one side of the first resilient barb member (311) facing to the inner wall of the tubular body (301) to prevent the first resilient barb member (311) from excessive deformation or damage; and a second spacer (332) provided on the inner wall of the second insertion port and one side of the second resilient barb member (312) facing to the inner wall of the tubular body (301) to prevent the second resilient barb member (312) from excessive deformation or damage.
9. The connection device according to claim 8, wherein the fiber tube connector (300) further comprises:
a first movable member (341) mounted in the first insertion port of the tubular body (301), wherein the first movable member (341) has a first pressure portion (3410) extending toward the first resilient barb member (311), and the first movable member (341) is movable from a first position for releasing the first resilient barb member (311) to a second position for pressing the first resilient barb member (311); when the first movable member (341) is located at the first position, the first resilient barb member (311) is held in a first state which allows the first fiber tube (120) to be inserted towards inside of the tubular body (301), and prevent the first fiber tube from being pulled out towards outside of the tubular body (301); and when the first movable member (341) is located at the second position, the first resilient barb member (311) is pressed by the first pressure portion (3410) and held in a second state which allows the first fiber tube (120) to be pulled out towards outside of the tubular body (301); and
a second movable member (342) mounted in the second insertion port of the tubular body (301), wherein the second movable member (342) has a second pressure portion (3420) extending toward the second resilient barb member (312), and the second movable member (342) is movable from a first position for releasing the second resilient barb member (312) to a second position for pressing the second resilient barb member (312); when the second movable member (342) is located at the first position, the second resilient barb member (312) is held in a first state which allows the second fiber tube (220) to be inserted towards inside of the tubular body (301), and prevent the second fiber tube from being pulled out towards outside of the tubular body (301); and when the second movable member (342) is located at the second position, the second resilient barb member (312) is pressed by the second pressure portion (3420) and held in a second state which allows the second fiber tube (220) to be pulled out towards outside of the tubular body (301).
10. The connection device according to claim 1, wherein the power cable connector (400) comprises: a crimping tube constructed to crimp a conductor core (111) of the first power cable (110) of the first optical and electric hybrid cable (100) with a conductor core (121) of the second power cable (120) of the second optical and electric hybrid cable (200); and
an insulation sleeve constructed to be sleeved outside the crimping tube and insulation layers of the first and second power cables (110, 210), so that the insulation sleeve is acted as sections of insulation layers of the first and second power cables (110, 210) which are stripped.
11. The connection device according to claim 1, further comprising:
a layer of waterproof band bound on a junction of the first optical and electric hybrid cable (100) and the second optical and electric hybrid cable (200) for wrapping hermetically the fiber tube connector (300) and the power cable connector (400) of the connection device therein.
12. A method for connecting a first optical and electric hybrid cable (100) and a second optical and electric hybrid cable (200), the first optical and electric hybrid cable (100) having a first power cable (110) and a first fiber tube (120) for receiving a fiber (130) therein, and the second optical and electric hybrid cable (200) having a second power cable (210) and a second fiber tube (220) for receiving the fiber (130) therein,
the method comprising steps of:
providing a connection device according to claim 1;
coupling the first fiber tube (120) with the second fiber tube (220) by means of the fiber tube connector (300) of the connection device, and electrically connecting the first power cable (110) and the second power cable (210) by means of the power cable connector (400) of the connection device; and
inserting the fiber (130) into the first fiber tube (120) and the second fiber tube (220), which have been coupled with each other.
PCT/IB2015/055123 2014-07-16 2015-07-07 Connection device for optical and electric hybrid cable WO2016009305A1 (en)

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EP0410735A2 (en) * 1989-07-28 1991-01-30 BICC Public Limited Company Overhead electric and optical transmission systems
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