WO2015070382A1 - 光纤连接头、光纤适配器及光纤连接器 - Google Patents

光纤连接头、光纤适配器及光纤连接器 Download PDF

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Publication number
WO2015070382A1
WO2015070382A1 PCT/CN2013/086983 CN2013086983W WO2015070382A1 WO 2015070382 A1 WO2015070382 A1 WO 2015070382A1 CN 2013086983 W CN2013086983 W CN 2013086983W WO 2015070382 A1 WO2015070382 A1 WO 2015070382A1
Authority
WO
WIPO (PCT)
Prior art keywords
fiber optic
sleeve
connector
fiber
cavity
Prior art date
Application number
PCT/CN2013/086983
Other languages
English (en)
French (fr)
Inventor
吴文新
黄雪松
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to RU2016122887A priority Critical patent/RU2644027C2/ru
Priority to KR1020167014631A priority patent/KR101912411B1/ko
Priority to JP2015546824A priority patent/JP5977459B2/ja
Priority to PL18169537T priority patent/PL3418786T3/pl
Priority to BR112016010663-6A priority patent/BR112016010663B1/pt
Priority to ES18169537T priority patent/ES2801330T3/es
Priority to AU2013304616A priority patent/AU2013304616B2/en
Priority to CN201710843141.3A priority patent/CN107656339B/zh
Priority to MX2015005893A priority patent/MX342434B/es
Priority to PCT/CN2013/086983 priority patent/WO2015070382A1/zh
Priority to EP18169537.0A priority patent/EP3418786B1/en
Priority to KR1020187030430A priority patent/KR102067453B1/ko
Priority to CA2885821A priority patent/CA2885821C/en
Priority to EP13823910.8A priority patent/EP2894501B1/en
Priority to CN201380002934.2A priority patent/CN105339822B/zh
Priority to US14/191,174 priority patent/US9557493B2/en
Priority to TW103114092A priority patent/TWI554798B/zh
Publication of WO2015070382A1 publication Critical patent/WO2015070382A1/zh

Links

Classifications

    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807Dismountable connectors, i.e. comprising plugs
    • G02B6/3873Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
    • G02B6/3874Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls using tubes, sleeves to align ferrules
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807Dismountable connectors, i.e. comprising plugs
    • G02B6/381Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3825Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres with an intermediate part, e.g. adapter, receptacle, linking two plugs
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807Dismountable connectors, i.e. comprising plugs
    • G02B6/381Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3826Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres characterised by form or shape
    • G02B6/3831Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres characterised by form or shape comprising a keying element on the plug or adapter, e.g. to forbid wrong connection
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807Dismountable connectors, i.e. comprising plugs
    • G02B6/3833Details of mounting fibres in ferrules; Assembly methods; Manufacture
    • G02B6/3847Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces
    • G02B6/3849Details of mounting fibres in ferrules; Assembly methods; Manufacture with means preventing fibre end damage, e.g. recessed fibre surfaces using mechanical protective elements, e.g. caps, hoods, sealing membranes
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807Dismountable connectors, i.e. comprising plugs
    • G02B6/3869Mounting ferrules to connector body, i.e. plugs
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807Dismountable connectors, i.e. comprising plugs
    • G02B6/389Dismountable connectors, i.e. comprising plugs characterised by the method of fastening connecting plugs and sockets, e.g. screw- or nut-lock, snap-in, bayonet type
    • G02B6/3891Bayonet type
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • GPHYSICS
    • G02OPTICS
    • G02BOPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24Coupling light guides
    • G02B6/36Mechanical coupling means
    • G02B6/38Mechanical coupling means having fibre to fibre mating means
    • G02B6/3807Dismountable connectors, i.e. comprising plugs
    • G02B6/381Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
    • G02B6/3816Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres for use under water, high pressure connectors

Definitions

  • the present invention relates to the field of data communication devices, and in particular, to an optical fiber connector, a fiber adapter, and a fiber connector.
  • Fiber optic connectors are used in fiber optic communication systems for connection between fiber optic cables, between fiber optic cables and optoelectronic components, and between optoelectronic components. It precisely pairs the two fiber ends that need to be connected so that the light energy output from the transmitting fiber can be coupled to the receiving fiber to the maximum extent.
  • the welding technology is usually used, that is, the fiber end of each household is allocated in the fiber-optic box, and each household is The optical fiber end and the household optical fiber cable are spliced in the fiber-optic fusion splicer, and then the household optical cable is laid to each household.
  • an on-site welding is also required, so as to The user terminal boxes of each household are connected, and the above-mentioned welding technology requires a dedicated fiber fusion splicing device, which has high technical requirements for the operator, and the operation process is cumbersome and inconvenient.
  • the embodiments of the present invention provide a fiber optic connector, a fiber optic adapter, and an optical fiber connector, which can be plug and play, and solve the cumbersome use of the field fusion in the prior art.
  • an embodiment of the present invention provides a fiber optic connector (10) including an optical cable (110), an inner sleeve member (140), and a cavity therein.
  • the optical fiber cable (110) extends from the optical fiber.
  • the inner sleeve member (140) is fixed at the end to the optical cable (110), and the other end is provided with a sleeve (180), a jacket member (130), and the jacket member (140) sleeve.
  • the outer sleeve member (140) is rotatable about an axial direction of the sleeve (180), wherein the sleeve (180) of the inner sleeve member (140) is at least a portion protrudes from the outer casing member (130), An end of the sleeve (180) protruding from the outer side of the outer casing member (130) is provided with an opening such that the end portion of the sleeve (180) has a C-shaped cross section.
  • the sleeve (180) has a C-shaped end for connecting a C-shaped plug of the fiber optic adapter (200) that is adapted to the fiber optic connector (100). Slot (2012).
  • the opening of the sleeve (180) is for connecting a positioning key (2014) of the fiber optic adapter (200) that is adapted to the fiber optic connector (100).
  • the sleeve (180) is configured to connect a slot (2012) of the fiber optic adapter (200) that is adapted to the fiber connector (100), wherein The C-shaped cross section of the end of the sleeve (180) is adapted to the C-shaped cross section of the slot (2012) of the fiber optic adapter (200).
  • the opening of the sleeve (180) is flared.
  • the flared opening of the sleeve (180) has an opening angle of 10 degrees or more and 30 degrees or less.
  • the flared opening of the sleeve (180) has an opening angle of 15 degrees or 22.5 degrees.
  • a fiber optic adapter (200) is provided at one end of the fiber optic adapter (200) with a socket (201), the socket (201) is provided with a cavity for housing an optical fiber (2011) and a slot (2012)
  • the cavity (2011) is located in the middle of the socket (201), the slot (2012) surrounds the periphery of the cavity (2011), and the socket (201) is provided with a positioning key (2014) ), making the section of the slot (2012) C-shaped.
  • the slot (2012) having a C-shaped cross section is for receiving a sleeve of the fiber connector (100) that is adapted to the fiber adapter (200). C-shaped end.
  • the positioning key (2014) is for connecting an opening of a sleeve of the fiber optic connector (100) that is adapted to the fiber optic adapter (200).
  • the width of the positioning key (2014) is equivalent to the width of the opening of the fiber connector (100).
  • a fiber optic connector (10) includes a fiber optic connector (100) and a fiber optic adapter (200), the fiber optic connector (100) including a fiber optic cable (110), an inner sleeve member (140), an interior a cavity is provided, and an optical fiber extending from the optical cable (110) is received in the cavity, and one end of the inner sleeve member (140) is fixed to the optical cable (110), and the other end is provided with a sleeve and a jacket.
  • An element (130), the outer casing element (140) is sleeved on an outer side of the inner sleeve element (140), and the outer casing element (140) is rotatable about an axial direction of the sleeve, wherein the inner sleeve element At least a portion of the sleeve of (140) protrudes out of the outer casing member (130), the sleeve protruding from the outer end of the outer casing member (130) is provided with an opening such that the sleeve
  • the end section is C-shaped;
  • the fiber optic adapter (200) is provided with a socket (201), the socket (201) is provided with a cavity (2011) for accommodating an optical fiber, and a slot (2012), the cavity (2011) is located at the socket (201) the middle of the slot (2012) around the periphery of the cavity (2011) of the socket (201) is provided with positioning key (2014) on, such that the slot (2 Zero U
  • the cross section is C-shaped.
  • the inner wall of the outer casing member (130) of the optical fiber connector (100) is provided with at least one bump (1304).
  • the outer surface of the socket (201) of the fiber optic adapter (200) is provided with at least one chute (2015).
  • the fiber connector (100) is inserted into the fiber adapter (200), and the bump (1304) is slidably coupled to the chute (2015).
  • the optical fiber connector provided by the embodiment of the present invention realizes the blind insertion of the optical fiber connector by the seamless connection of the C-shaped open sleeve of the optical fiber connector to the C-shaped slot of the optical fiber adapter.
  • the operation is simpler, and the plug-and-play of the fiber connector can be realized.
  • FIG. 1 is an architecture of a communication network to which an embodiment of the present invention is applied;
  • FIG. 2a is a schematic structural view of an optical fiber connector according to an embodiment of the present invention.
  • 2b is a schematic structural view of a fiber optic connector according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of an optical fiber connector according to an embodiment of the present invention.
  • FIG. 3b is an exploded exploded view of an optical fiber connector according to an embodiment of the present invention.
  • 3c is a cross-sectional view of an optical fiber connector according to an embodiment of the present invention.
  • 4a is a front projection view of a jacket component according to an embodiment of the present invention.
  • 4b is a front projection view of a jacket component according to another embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of a fiber optic adapter according to an embodiment of the present invention.
  • FIG. 5b is an exploded exploded view of a fiber optic adapter according to an embodiment of the present invention.
  • FIG. 6 is a schematic view showing an opening angle of a fiber optic connector sleeve according to an embodiment of the present invention.
  • FIG 1 shows a part of the FTTx optical network.
  • the FTTx can be FTTH (Fiber To The Home), FTTC (Fiber To The Curb), or FTTP. ( Fiber To The Premises, fiber to the station), FTTN (Fiber To The Node or Neighborhood), FTTO (Fiber To The Office), or FTTSA (Fiber To The) Service area, fiber to service area).
  • the FTTH network includes the feeder link 1, the first 1: N splitter 2, the wiring link 3, and the second 1: N branch.
  • the device 4, and at least one branch link 5, in the present invention a fiber optic connector for use in an outdoor environment is suitable for the above-described branch link 5.
  • the present invention is exemplified by a type of network of FTTx architecture, other network architectures may employ the present invention.
  • the fiber optic connector includes a fiber optic connector 100, a fiber optic connector 300, and a fiber optic adapter 200.
  • the fiber connector 100 is connected to another fiber connector 300 through the fiber adapter 200 to implement interconnection of the internal fibers.
  • the optical fiber connector 100 includes an optical cable 110, an inner sleeve member 140, and a jacket member 130, as seen from the external structure.
  • the inner sleeve member 140 is internally provided with a cavity, the optical fiber extending from the optical cable 110 is received in the cavity, the inner sleeve member 140 is fixed to the optical cable 110, and the other end is provided with a sleeve 180.
  • the outer sleeve member 130 is sleeved on the outer side of the inner sleeve member 140, and the outer sleeve member 130 is rotatable about an axial direction of the sleeve 180, wherein at least a portion of the sleeve 180 of the inner sleeve member 140 is convex.
  • an end of the sleeve 180 protruding from the outer side of the outer casing member 130 is provided with an opening such that the end portion of the sleeve 180 has a C-shaped cross section.
  • the sleeve can be seamlessly connected with the C-shaped slot of the fiber adapter, and the blind insertion of the above-mentioned fiber connector is realized, and the operation is simpler, and the plug-and-play of the fiber connector can be realized.
  • the sleeve 180 may be a cylindrical cylinder, or may be an elliptical cylinder, or In other words, the embodiment of the present invention takes the sleeve 180 as a cylindrical cylinder as an example.
  • the C-shaped opening of the sleeve 180 is a circular or elliptical shape with a notch when viewed in the opposite direction of the axial direction of the sleeve 180.
  • the sleeve 180 has a C-shaped end for connecting the C-shaped slot 2012 of the fiber optic adapter 20 that is adapted to the fiber optic connector 100.
  • the opening of the sleeve 180 is used to connect the positioning key 2014 of the fiber optic adapter 200 that is adapted to the fiber optic connector 100.
  • the sleeve is used to connect the slot 2012 of the fiber optic adapter 200 that is adapted to the fiber optic connector 100, wherein the end of the sleeve has a C-shaped cross section and the slot 2012 of the fiber optic adapter 200 is C The shape of the section is adapted.
  • the opening of the sleeve (180) has a flare shape.
  • the opening angle of the flared opening of the sleeve (180) is 10 degrees or more and 30 degrees or less.
  • the flared opening of the sleeve (180) has an opening angle of 15 degrees or 22.5 degrees.
  • the outer casing member 130 is a stepped circular tube structure having two protruding locking points 1304 on its inner surface (not shown in FIG. 3a, please refer to 1304 in FIGS. 4 and 5).
  • the locking point 1304 is engaged with the second chute 2015 (not shown in FIG. 3a, please refer to 2015 in FIG. 5a) on the adapter assembly 210 to realize the locking connection.
  • the outer front section of the outer casing member 130 is provided with an arrow alignment mark to indicate the connection and release state of the connector; the rear end has a symmetrical flattened plane, and a vertical shallow groove is provided in the plane to increase the operational hand feeling.
  • the fiber optic connector 100 further includes a tail sleeve 120, a ferrule 150, a strap 160, and a connector dust cap 170.
  • the outer surface of the connector dust cap 170 is provided with a symmetrical second chute 1704 and is fitted with a 0-shaped sealing ring 172 which is tethered to the main body of the optical fiber connector 100 by a cord 160.
  • Figure 3b is an exploded view of the fiber connector
  • Figure 3c is a cross-sectional view of the fiber connector. 3b and FIG. 3c, as seen from the internal structure, please refer to FIG. 3b.
  • the optical fiber connector 100 includes a sleeve 122, a snap ring 126, a 0-shaped sealing ring 132, a 0-shaped sealing ring 136, a 0-shaped sealing ring 172, and an elastic member. 134. Connector 138. Referring to FIGS. 3a and 3b, in the embodiment of the present invention, the ferrule 150, the connecting member 138, the elastic member 134 and the outer casing member 130 are sequentially sleeved on the optical cable 110.
  • the ferrule 150 is sleeved on the optical cable 110.
  • the ferrule 150 is a cylindrical shape with a plurality of steps.
  • the cable 110 extends through the ferrule 150.
  • the ferrule 150 includes opposite ends 150a, 150b, respectively, and the cable 110 is exposed by the ferrule 150 away from the end 150b of the connecting member 138.
  • the connecting member 138 is sleeved on the ferrule 150 - the end 150a.
  • the inner layer of aramid yarn of the cable 110 is snap-fitted with the connector 138 by a snap ring 126.
  • the tail sleeve 120 can be processed first and then placed on the optical cable, or can be cast by integral injection molding.
  • the connector 138 includes opposite ends 138a, 138b.
  • the connector 138 - end 138a is screwed to one end 150b of the ferrule 150.
  • the other end 138b of the connector 138 is fastened to the outer aramid yarn of the cable 110 by a snap ring 126.
  • One end 138a of the connecting member 138 is provided with a sealing ring-shaped sealing ring 132 and 136.
  • the connector 138 - end 138a includes a shoulder 138c.
  • the shoulder 138c is for the elastic member 134.
  • the elastic member 134 includes oppositely disposed ends 134a, 134b. One end 134a of the elastic member 134 is adjacent to the one end 138a of the connecting member 138 adjacent to the ferrule 150.
  • the elastic member 134 is a spring, and the elastic member 134 is sleeved on the connecting member 138. One end 134a of the resilient member 134 rests against the shoulder 138c of the connector 138.
  • the outer casing member 130 includes oppositely disposed ends 130a, 130b.
  • the outer sleeve member 130 is sleeved on the connecting member 138 and the ferrule 150.
  • the outer sleeve member 130 is slidably connected to the connecting member 138 and abuts against the other end of the elastic member 134.
  • 134b, the elastic member 134 It is used to provide the outer casing member 130 with an elastic force in a direction away from the ferrule 150, thereby functioning as a connection preventing lock.
  • the inner wall of the other end 130b of the outer casing member 130 is provided with a symmetrical locking point 1304 (see 1304 of Figures 4a and 4b), which is a cylindrical projection.
  • the outer casing member 130 is a cylinder having a stepped hole.
  • One end 130a of the outer casing member 130 forms a flange 130d inwardly for the other end 134b of the elastic member 134.
  • the elastic member 134b is sandwiched between the flange 130d and the shoulder 138c.
  • the inner wall of the other end 130b of the outer casing member 130 is provided with two opposite locking points 1304, which are cylindrical projections.
  • the number of the locking points 1304 may be a plurality of lively disposed along the circumference of the outer casing member 130.
  • the outer surface of the other end 130b of the outer casing member 130 is provided with an arrow alignment mark to indicate the connected and released state of the optical fiber connector 100.
  • the outer surface of the outer casing member 130 has a symmetrical flattened plane with vertical shallow grooves in the plane to increase the operational feel.
  • the inner sleeve member 140 extends axially along the ferrule 150, and the ferrule 150 is received in the inner sleeve member 140 away from the one end 150b of the connector member 138.
  • one end of the inner sleeve member 140 is fixed to a ring, and the collar is sleeved at one end 150b of the ferrule 150.
  • the inner sleeve member 140 is provided with a sleeve protruding forwardly, and the sleeve is formed in a "C" shape, protruding from the ceramic ferrule end surface of the ferrule 150 to realize the ferrule protection function and avoiding the light connection.
  • the ferrule end face is contaminated by contact with other parts during head insertion and removal, or protects the ferrule from impact damage if it is accidentally dropped.
  • the sleeve has a flared opening for positioning the fiber optic connector 200 with the positioning key 2014 on the fiber optic adapter 200 (see Figure 5a). Plugging allows fiber optic connector 100 and fiber optic adapter 200 to achieve accurate alignment.
  • the opening angle of the flared opening is greater than or equal to 10 degrees and less than or equal to 30 degrees.
  • the opening angle is an angle formed along the axial direction of the sleeve and the edge direction of the louver opening. As shown in FIG. 6, specifically, it may be 10 degrees, 15 degrees, 22.5 degrees, and 30 degrees.
  • One end 130b of the outer casing member 130 is secured and sealed to the cable 110 by a sleeve 122.
  • the tail sleeve 120 is sleeved on the sleeve 122 and fixed by the snap ring 126 to increase the tensile strength and sealing property of the fiber joint 100.
  • the tail sleeve 120 may be processed first and then last, or may be cast by integral injection molding.
  • the fiber optic connector 100 includes a connector dust cap 170.
  • the connector dust cap 170 is attached to the fiber optic connector 100 by a strap 160.
  • the connector head dustproof cap 170 is provided with a connector receiving cavity, and the connector receiving cavity extends axially along the connector dust cap 170.
  • the connector receiving cavity receives the ferrule 150 and the inner cavity.
  • the connector head dust cap 170 is provided with a 0-shaped seal ring 172.
  • the connector head dust cap 170 is provided with at least one first sliding slot 1704, and the number of the sliding slots 1704 should be the locking point 1304 (see Figure 4a for the locking point 1304).
  • Figure 4b) is the same.
  • the sliding slot 1704 cooperates with the locking point 1304 of the outer casing member 130.
  • the sliding slot 1704 has a spiral shape, and the sliding slot 1704 is prevented from the connecting end dust cap 170 along the connecting end.
  • the dust cap 170 extends circumferentially, and the extended end of the chute 1704 engages the locking point 1304. In this embodiment, the end of the sliding slot 1704 extends in an arc shape matching the shape of the locking point 1304.
  • the outer surface of the connector dust cap 170 is provided with an arrow mark and a "0""1" mark.
  • the arrow mark on the outer casing member 130 should be aligned.
  • the arrow of the connector head dust cap 170 is identified, and when the direction is "0", the fiber connector 100 is in a locked state; when the direction is "1", the fiber connector 100 is loose. Open state, the above use double The locking method ensures long-term reliability of the optical performance of the fiber optic connector.
  • the ferrule 150 and the inner sleeve member 140 are inserted into the receiving cavity.
  • the locking point 1304 of the optical fiber connector 100 slides into the sliding slot 1704 of the connector dust cap 170, and rotates the connector dust cap 170 in a direction from "1" to "0", so that The locking point 1304 slides to the end of the chute 1704 to effect a lock.
  • the fastening of the connector dust cap 170 to the fiber connector 100 is completed by the above operation.
  • 4a and 4b are front projection views of the fiber optic connector 100 showing the internal snap unlocking structure of the fiber optic connector 100.
  • 4a is an internal unlocking structure when the ferrule 150 does not have a latching wing, wherein the left side (a) of FIG. 4a is an initial state of the internal buckle of the optical fiber connector 100, and the right side (b) is the optical fiber connector 100.
  • the internal snap lock is locked.
  • 4b is an internal unlocking structure when the ferrule 150 is provided with a locking wing, wherein the left side (a) of FIG. 4b is an initial state of the internal buckle of the optical fiber connector 100, and the right side (b) is the optical fiber connector 100.
  • the internal snap lock is locked.
  • the inner surface of the outer casing member 130 has an inclined boss 1302.
  • the oblique projection 1302 avoids the locking wings 1502 on the ferrule 150.
  • the latching wings 1502 are fastened to the card position on the socket 201 (see FIG. 5a) to achieve connection locking.
  • the ferrule 150 without the locking wings can also be used. At this time, there is no responsive oblique boss on the inner surface of the outer casing member 130.
  • two symmetric locking points 1304 of the inner surface of the outer casing member 130 are engaged with two symmetric second sliding grooves 2015 (see FIG. 5a) on the outer surface of the socket 201 (see FIG. 5a) to achieve a double locking connection.
  • the outer casing member 130 is rotated to transition from the state of the left (a) of Figure 4b to the state of the right (b).
  • the ferrule 150 The upper latching wings 1502 are depressed by the angled projections 1302 of the outer casing member 130 to complete the snap unlocking.
  • the two symmetrical locking points 1304 of the inner surface of the outer casing member 130 are also unscrewed from the two symmetrical second chutes 2015 of the outer surface of the socket 201, and the fiber connector 100 can be pulled out from the fiber optic adapter 200. Out.
  • the outer casing member 130 can be rotated by 45 degrees to complete the locking and unlocking process of the connector.
  • a stop post 1504 is formed on the ferrule 150
  • a left and right limit stop 1306 is designed on the outer casing member 130.
  • Fig. 5a is a schematic structural view of a fiber optic adapter 200.
  • Figure 5b is an exploded view of the fiber optic adapter 200. As shown in Figures 5a and 5b, one end of the fiber optic adapter 200 is provided with a socket 201.
  • the other end of the optical fiber adapter 200 may further be provided with a socket 202, and the two sockets 201 and 202, and the ceramic sleeve 212 placed at the center thereof, may be ultrasonically welded together.
  • the socket 201 is provided with a cavity 2011 and a slot 2012.
  • the cavity 2011 is located in the middle of the socket 201, and the cavity 2011 and the slot 2012 extend axially along the socket 201.
  • the slot 2012 surrounds the periphery of the cavity 2011.
  • the cavity 2011 cooperates with the ferrule 150, the slot 2012 cooperates with the inner sleeve element 140, and the slot 2012 is provided with a positioning key 2014, and the positioning key 2014 is along the
  • the socket 201 extends in a strip direction in the axial direction, so that the cross section of the slot 2012 is formed in a C shape, and is seamlessly connected with the sleeve having a C-shaped opening in the optical fiber connector, thereby realizing the blind insertion of the above-mentioned optical fiber connector, and the operation is more Simple and easy to use, plug and play fiber optic connectors.
  • the C-shaped slot 2012 When viewed along the opposite direction of the axial direction of the socket 201, the C-shaped slot 2012 is notched Round or oval.
  • the C-shaped inner sleeve member cooperates with the positioning key 2014 and is inserted into the slot 2012.
  • the sockets 201 and 202 are cylindrical.
  • the cavity 210 is a square cavity or a circular cavity.
  • the slot 2012 is a C-shaped slot.
  • the slot 2012 having a C-shaped cross section is for receiving the C-shaped end of the sleeve 180 of the fiber optic connector 100 that is adapted to the fiber optic adapter 200.
  • the locating key 2014 is used to connect the opening of the sleeve of the fiber optic connector 100 that is mated with the fiber optic adapter 200.
  • the width of the positioning key 2014 is equivalent to the opening width of the sleeve 180 of the fiber optic connector 100.
  • a second chute 2015 is formed on the outer periphery of the optical fiber socket 201.
  • the chute 2015 has a spiral shape, and the chute 2015 extends from the end of the socket 201 along the circumference of the socket, and The extended end of the chute 2015 engages the locking point 1304.
  • the chute 2015 has the same shape as the chute 1704 (see FIG. 3a) of the connector dust cap 170.
  • the fiber optic adapter 200 includes a 0-shaped seal ring 222, a lock nut 220, a 0-shaped seal ring 240, a socket body 210, and a ceramic sleeve 212.
  • the O-ring 240, the lock nut 220, and the O-ring 222 are sequentially sleeved on the socket body 210, and the ceramic sleeve 212 is inserted into the other end of the socket body 210.
  • the sealing ring 222 is fastened.
  • the fiber optic adapter 200 includes an adapter dust cap 230.
  • the adapter dust cap 230 is provided with an adapter receiving cavity for receiving the fiber optic adapter 200, and the receiving cavity is used when the fiber optic adapter 200 is inserted into the device.
  • the socket 201 is housed in the dust cap 230.
  • the flared opening of the sleeve on the inner sleeve member 140 is inserted into the positioning key 2014 on the slot, and the inner sleeve member 140 is inserted.
  • the slot 2012 is such that the ferrule 150 is inserted into the cavity 2011, and the fiber connector is locked.
  • the point 1304 is slid into the chute 2015 of the fiber optic adapter, and the fiber optic socket 201 is rotated such that the locking point 1304 is slid to the end of the chute 2015 to achieve locking.
  • the optical fiber connector provided by the embodiment of the present invention realizes the blind insertion of the optical fiber connector by seamlessly connecting the C-shaped open sleeve of the optical fiber connector to the C-shaped slot of the optical fiber adapter. The operation is simpler, and the plug-and-play of the fiber connector can be realized.
  • the fiber optic connector provided by the embodiment of the present invention also achieves the highest level of waterproof rating.

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Abstract

一种光纤连接头(100),包括光缆(110),内套元件(140),内部设有一空腔,所述光缆(110)延伸出的光纤收容于所述空腔内,所述内套元件(140)一端与所述光缆(110)固定,另一端设置有套筒(180),一外套元件(130),所述外套元件(130)套设于所述内套元件(140)外侧,其中,所述内套元件(140)的套筒(180)至少一部分凸出于所述外套元件(130)之外,所述套筒(180)凸出于所述外套元件(130)之外的末端设有一个开口,使得所述套筒(180)的末端截面呈C形。通过以上技术方案提供的光纤连接器通过光纤连接头中呈C形开口的套筒与所述光纤适配器的C形插槽的无缝连接,实现了上述光纤连接头的盲插,操作更简便,进而可以实现光纤连接器的即插即用。

Description

光纤连接头、 光纤适配器及光纤连接器 技术领域 本发明涉及数据通信设备领域, 尤其涉及一种光纤连接头、 光纤适配器及 光纤连接器。 背景技术 光纤连接器是在光纤通讯系统中用于光缆之间, 光缆和光电部件之间、 以 及光电部件之间进行连接。 它是把两个需要连接的光纤端面精密地对接起来, 以使发射光纤输出的光能量能最大限度地耦合到接收光纤中去。 在光纤到户 (Fiber To The Home, FTTH) 网络的入户段线缆布放过程中, 通常釆用熔接技术, 即在分纤盒内分配好对应每户的光纤端头, 将每户的光纤 端头和入户光缆用光纤熔接机在分纤盒内进行熔接, 再将入户光缆铺设到每家 每户, 在入户光缆的另一端, 也需要进行一次现场熔接, 以便和每家每户的用 户终端盒连接起来, 使用上述熔接技术需要专用的光纤熔接设备, 对操作人员 的技术要求较高, 且操作起来过程繁瑣、 不便利。 发明内容
有鉴于此, 本发明实施例提供了一种光纤连接头、 光纤适配器和光纤连接 器, 可以即插即用, 解决了现有技术中釆用现场熔接的繁瑣。
第一方面, 本发明实施例提供了一种光纤连接头 (10) 包括光缆(110), 一内套元件(140), 内部设有一空腔, 所述光缆(110)延伸出的光纤收容于所 述空腔内, 所述内套元件(140) —端与所述光缆(110) 固定, 另一端设置有 套筒(180),—外套元件(130),所述外套元件(140)套设于所述内套元件(140) 外侧, 所述外套元件(140) 能够围绕所述套筒 (180) 的轴向旋转, 其中,所述 内套元件 (140) 的套筒 (180)至少一部分凸出于所述外套元件(130)之外, 所述套筒 (180) 凸出于所述外套元件 (130)之外的末端设有一个开口, 使得 所述套筒 (180) 的末端截面呈 C形。
在第一方面的第一种可能的实现方式中, 所述套筒 (180)呈 C形的末端用 于连接与所述光纤连接头(100)适配的光纤适配器( 200 )的 C形插槽(2012)。
在第一方面的第二种可能的实现方式中, 所述套筒 (180)的开口用于连接 与所述光纤连接头 (100)适配的光纤适配器( 200 ) 的定位键(2014)。
在第一方面的第三种可能的实现方式中, 所述套筒 (180)用于连接与所述 光纤连接头 (100)适配的光纤适配器( 200 ) 的插槽(2012), 其中, 所述套筒 (180) 的末端呈 C形的截面与所述光纤适配器( 200 ) 的插槽(2012)呈 C形 的截面适配。
在第一方面的第四种可能的实现方式中, 所述套筒( 180)的开口呈喇叭形。 在第一方面的第五种可能的实现方式中, 所述套筒 (180)的喇叭形开口的 开口角度大于等于 10度且小于等于 30度。
在第一方面的第六种可能的实现方式中, 所述套筒 (180)的喇叭形开口的 开口角度为 15度或 22.5度。
第二方面, 一种光纤适配器( 200 ), 所述光纤适配器( 200 ) 的一端设置有 插座( 201 ),所述插座( 201 )设有用于容纳光纤的空腔( 2011 )以及插槽( 2012 ), 所述空腔( 2011 )位于所述插座( 201 ) 中部, 所述插槽( 2012 )环绕在所述空 腔( 2011 )的外围,所述插座( 201 )上设有定位键( 2014 ),使得所述插槽( 2012 ) 的截面呈 C形。
在第二方面的第一种可能的实现方式中, 所述截面呈 C形的插槽(2012) 用于容纳与所述光纤适配器( 200 )适配的光纤连接头 (100) 的套筒的 C形末 端。
在第二方面的第二种可能的实现方式中, 所述定位键(2014)用于连接与 所述光纤适配器 ( 200 )适配的光纤连接头 (100) 的套筒的开口。 在第二方面的第三种可能的实现方式中, 所述定位键(2014) 的宽度与所 述光纤连接头 (100) 的开口的宽度相当。
第三方面, 一种光纤连接器(10), 包括光纤连接头 (100)和光纤适配器 ( 200 ), 所述光纤连接头 (100) 包括光缆(110), —内套元件(140), 内部设 有一空腔,所述光缆( 110 )延伸出的光纤收容于所述空腔内 ,所述内套元件( 140 ) 一端与所述光缆(110) 固定, 另一端设置有套筒,一外套元件(130), 所述外 套元件(140)套设于所述内套元件(140)外侧, 所述外套元件(140) 能够围 绕所述套筒的轴向旋转, 其中,所述内套元件(140) 的套筒至少一部分凸出于 所述外套元件(130)之外, 所述套筒凸出于所述外套元件(130)之外的末端 设有一个开口, 使得所述套筒的末端截面呈 C形;
所述光纤适配器 ( 200 ) 的一端设置有插座(201 ), 所述插座(201 )设有 用于容纳光纤的空腔(2011 ) 以及插槽(2012), 所述空腔(2011 )位于所述插 座(201 ) 中部, 所述插槽(2012 )环绕在所述空腔(2011 ) 的外围, 所述插座 ( 201 )上设有定位键( 2014 ), 使得所述插槽( 20U ) 的截面呈 C形。
在第三方面的第一种可能的实现方式中, 所述光纤连接头 (100)的外套元 件(130) 内壁设有至少一个凸块( 1304 )。
在第三方面的第二种可能的实现方式中, 所述光纤适配器( 200 ) 的插座 (201 ) 的外表面设有至少一个滑槽(2015)。
在第三方面的第三种可能的实现方式中, 所述光纤连接头 (100)插入所述 光纤适配器( 200 ), 所述凸块( 1304 )滑动连接于所述滑槽(2015)上。
通过以上技术方案, 本发明实施例提供的光纤连接器通过光纤连接头呈 C 形开口的套筒与所述光纤适配器的 C形插槽的无缝连接, 实现了上述光纤连接 头的盲插, 操作更简便, 进而可以实现光纤连接器的即插即用。 附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案, 下面将对实施 例或现有技术描述中所需要使用的附图作简单地介绍, 显而易见地, 下面描述 中的附图仅仅是本发明的一些实施例, 对于本领域普通技术人员来讲, 在不付 出创造性劳动的前提下, 还可以根据这些附图获得其他附图。
图 1为本发明一实施例应用的通信网络的架构;
图 2a为本发明一实施例提供的光纤连接器结构示意图;
图 2b为本发明一实施例提供的光纤连接器结构示意图;
图 3a为本发明一实施例提供的光纤连接头的结构示意图;
图 3b为本发明一实施例提供的光纤连接头的爆炸分解图;
图 3c为本发明一实施例提供的光纤连接头的剖视图;
图 4a为本发明一实施例提供的外套元件正面投影视图;
图 4b为本发明另一实施例提供的外套元件正面投影视图;
图 5a为本发明一实施例提供的光纤适配器的结构示意图;
图 5b为本发明一实施例提供的光纤适配器的爆炸分解图;
图 6为本发明一实施例提供的光纤连接头套筒的开口角度示意图。
具体实施方式
为便于理解, 下面将结合本发明实施例中的附图, 对本发明实施例中的技 术方案进行清楚、 完整地描述, 显然, 所描述的实施例仅仅是本发明一部分实 施例, 而不是全部的实施例。 基于本发明中的实施例, 本领域普通技术人员在 没有做出创造性劳动前提下所获得的所有其他实施例, 都属于本发明保护的范 围。
图 1为 FTTx的光网络的一部分, FTTx可以是 FTTH ( Fiber To The Home, 光纤到户), 还可以是 FTTC(Fiber To The Curb, 光纤到路边), 还可以是 FTTP ( Fiber To The Premises, 光纤到驻地), 还可以是 FTTN ( Fiber To The Node or Neighborhood, 光纤到节点), 还可以是 FTTO ( Fiber To The Office , 光纤到办 公室), 或者是 FTTSA ( Fiber To The Service area, 光纤到服务区)。 以 FTTH网 络为例, 从中心机房(Centre Office, CO ) 的下游看, FTTH包括馈线链路 1 , 第一 1 : N分路器 2、 配线链路 3、 第二个 1 : N分路器 4、 以及至少一个分支链 路 5 ,在本发明中,应用于户外环境的光纤连接器适用于上述分支链路 5。 虽然, 本发明是以 FTTx 结构的一种类型的网络为例, 其他网络结构也可以釆用本发 明。
图 2a为本发明的光纤连接器 10, 如图 2a所示, 光纤连接器包括光纤连接 头 100、 光纤连接头 300和光纤适配器 200。 其中, 光纤连接头 100通过光纤适 配器 200与另一个光纤连接头 300进行连接, 实现内部光纤的对接。
图 2b为光纤连接头 100的结构示意图, 如图 2b所示, 从外部结构看, 光 纤连接头 100包括光缆 110, 内套元件 140, 外套元件 130。 所述内套元件 140 内部设有一空腔, 所述光缆 110延伸出的光纤收容于所述空腔内, 所述内套元 件 140—端与所述光缆 110固定, 另一端设置有套筒 180; 所述外套元件 130套 设于所述内套元件 140外侧, 所述外套元件 130能够围绕所述套筒 180的轴向 旋转, 其中, 所述内套元件 140的套筒 180至少一部分凸出于所述外套元件 130 之外, 所述套筒 180凸出于所述外套元件 130之外的末端设有一个开口, 使得 所述套筒 180的末端截面呈 C形, 该呈 C形开口的套筒可以与光纤适配器的 C 形插槽进行无缝连接, 实现了上述光纤连接头的盲插, 操作更简便, 进而可以 实现光纤连接器的即插即用。
其中, 所述套筒 180 可以是圓柱形筒状物, 还可以是椭圓形筒状物, 还可 以是其他筒状物, 本发明实施例以套筒 180 为圓柱形筒状物为例。 当沿着所述 套筒 180轴向的反方向看去, 所述套筒 180的 C形开口为带有缺口的圓形或椭 圓形。
进一步地, 如图 5a所示, 所述套筒 180呈 C形的末端用于连接与所述光纤 连接头 100适配的光纤适配器 20的 C形插槽 2012。所述套筒 180的开口用于连 接与所述光纤连接头 100适配的光纤适配器 200的定位键 2014。 所述套筒用于 连接与所述光纤连接头 100适配的光纤适配器 200的插槽 2012, 其中, 所述套 筒的末端呈 C形的截面与所述光纤适配器 200的插槽 2012呈 C形的截面适配。
进一步地, 所述套筒 (180 ) 的开口呈喇叭形。 所述套筒 (180 ) 的喇叭形 开口的开口角度大于等于 10度且小于等于 30度。 所述套筒 (180 ) 的喇叭形开 口的开口角度为 15度或 22. 5度。
进一步地, 外套元件 130为阶梯状的圓管结构, 其内表面上有 2个突出的 锁紧点 1304 (图 3a中未示出, 请参照图 4和图 5中的 1304 ), 当与光纤适配器 200连接时, 锁紧点 1304与适配器组件 210上的第二滑槽 2015 (图 3a中未示 出, 请参照图 5a中的 2015 )扣合, 实现锁紧连接。 外套元件 130的外部前段设 有箭头对准标识, 以指示连接器的连接和松开状态; 后端有对称的削平平面, 平面内设有竖向的浅沟槽, 以增加操作手感。
如图 3a所示, 光纤连接头 100还包括尾套 120、 插芯 150、 绳带 160以及 连接头防尘帽 170。
连接头防尘帽 170的外表面设有对称的第二滑槽 1704, 并装有 0形密封圈 172, 通过绳带 160栓系在光纤连接头 100的主体上。
图 3b为光纤连接头的爆炸分解图, 图 3c为光纤连接头的剖视图, 结合图 3b和图 3c可知, 从内部结构看, 具体请参见图 3b, 光纤连接头 100包括套管 122、卡环 126、 0形密封圈 132、 0形密封圈 136、 0形密封圈 172、弹性件 134、 连接件 138。请参阅图 3a和 3b,在本发明实施例中,所述插芯 150、连接件 138、 弹性件 134及外套元件 130依次套设于所述光缆 110上。
请参见图 3c, 所述插芯 150套设于所述光缆 110上, 在本实施方式中, 所 述插芯 150为多个台阶的圓筒形。 所述光缆 110贯穿所述插芯 150。 所述插芯 150包括相对设置的两端分别为 150a、 150b,所述光缆 110由所述插芯 150远离 所述连接件 138的一端 150b露出。 所述连接件 138套设于所述插芯 150—端 150a。 所述光缆 110的内层芳纶纱用卡环 126与连接件 138卡接在一起。 尾套 120可以先加工好再最后套在光缆上, 也可以釆用整体注塑的方式浇注。
所述连接件 138包括相对设置的两端 138a、 138b。所述连接件 138—端 138a 螺接于所述插芯 150的一端 150b。所述连接件 138的另一端 138b用卡环 126与 所述光缆 110的外层芳纶纱紧固在一起。 所述连接件 138的一端 138a套设有起 密封作用的 0形密封圈 132和 136。所述连接件 138—端 138a包括一轴肩 138c。 所述轴肩 138c用于 ·ί氏靠所述弹性件 134。
所述弹性件 134包括相对设置的两端 134a、 134b。 所述弹性件 134的一端 134a 4氏靠于所述连接件 138靠近所述插芯 150的一端 138a。 在本实施方式中, 所述弹性件 134为弹簧, 所述弹性件 134套设于所述连接件 138上。 所述弹性 件 134的一端 134a 4氏靠于所述连接件 138的轴肩 138c。
所述外套元件 130包括相对设置的两端 130a、 130b。 所述外套元件 130套 设于所述连接件 138及所述插芯 150上, 所述外套元件 130—端 130a与所述连 接件 138滑动连接, 且抵靠于所述弹性件 134的另一端 134b, 所述弹性件 134 用于向所述外套元件 130提供沿远离所述插芯 150方向的弹力, 起到连接防松 的作用。 所述外套元件 130的另一端 130b的内壁设置有对称的锁紧点 1304 (请 参见图 4a和图 4b的 1304 ), 所述锁紧点 1304为圓柱形凸块。
本实施方式中, 所述外套元件 130为具有台阶孔的圓筒。 所述外套元件 130 一端 130a向内形成凸缘 130d, 用于 ·ί氏靠所述弹性件 134的另一端 134b。 所述 弹性件 134b夹持于所述凸缘 130d及所述轴肩 138c之间。 所述外套元件 130的 另一端 130b的内壁设置有两个相对的锁紧点 1304 , 所述锁紧点 1304为圓柱形 凸块。 当然, 在其他实施方式中, 所述锁紧点 1304的数量可以是一个活沿着所 述外套元件 130的周向设置多个。
所述外套元件 130的另一端 130b外表面设有箭头对准标识, 以指示所述光 纤连接器 100的连接和松开状态。 所述外套元件 130的外表面有对称的削平平 面, 平面内有竖向的浅沟槽, 以增加操作手感。
所述内套元件 140沿所述插芯 150轴向延伸, 所述插芯 150远离所述连接 件 138的一端 150b收容于所述内套元件 140内。本实施例中,所述内套元件 140 的一端固定一套环上, 所述套环套设于所述插芯 150的一端 150b。 所述内套元 件 140设有向前凸出的套筒, 所述套筒成 "C" 形, 凸出于所述插芯 150的陶瓷 插芯端面, 以实现插芯保护功能, 避免光线连接头插拔操作时插芯端面接触到 其他部件而受污染, 或在不小心跌落时保护插芯免受撞击破坏。 从纵向看, 套 筒上有一个呈喇叭形开口, 所述喇叭形开口用于当所述光纤连接头 100插入到 光纤适配器 200时, 与光纤适配器 200上的定位键 2014 (请参见图 5a )插接, 使得光纤连接头 100和光纤适配器 200可以实现准确的对准。
进一步地, 所述的喇叭形开口的开口角度大于等于 10度且小于等于 30度。 所述的开口角度为沿着套筒轴向的方向与喇八开口的边沿方向所成的夹角, 如 图 6所示, 具体可以为 10度、 15度、 22.5度、 30度。
所述外套元件 130的一端 130b通过套管 122实现与所述光缆 110的固定和 密封。
所述尾套 120套设于所述套管 122上, 并利用卡环 126固定, 增加所述光 纤连接头 100的抗拉强度和密封性。 所述尾套 120可以先加工好再最后套上, 也可以用整体注塑的方式浇注上。
所述光纤连接头 100 包括一连接头防尘帽 170。 具体请参见附图 3a, 所述 连接头防尘帽 170通过一绳带 160栓系在所述光纤连接头 100上。 所述连接头 防尘帽 170 —端开设有连接头收容腔, 所述连接头收容腔沿所述连接头防尘帽 170轴向延伸, 所述连接头收容腔收容所述插芯 150及内套元件 140。 所述连接 头防尘帽 170装有 0形密封圈 172。
图 3a中, 所述连接头防尘帽 170外周开设有至少一个第一滑槽 1704 , 所述 滑槽 1704的个数应当与所述锁紧点 1304 (锁紧点 1304请参见附图 4a和图 4b ) 相同。所述滑槽 1704与所述外套元件 130的锁紧点 1304相配合,所述滑槽 1704 呈螺旋形,所述滑槽 1704从所述连接头防尘帽 170—端沿所述连接头防尘帽 170 周向延伸, 且所述滑槽 1704延伸的末端卡合所述锁紧点 1304。 本实施方式中, 所述滑槽 1704延伸的末端为与所述锁紧点 1304形状相配合的弧形。 所述连接 头防尘帽 170外表面设有箭头标识和 "0" "1" 标识, 当所述光纤连接头 100插 入所述连接头防尘帽时,外套元件 130上的箭头标识应当对准连接头防尘帽 170 的箭头标识, 并且当朝向 "0" 的方向拧转, 所述光纤连接头 100处于锁紧状态; 当朝向 "1" 的方向拧转, 所述光纤连接头 100处于松开状态, 上述釆用了双重 锁紧方式, 保证了光纤连接器的光学性能长期可靠。
当将所述连接头防尘帽 170扣合于所述光纤连接头 100上时,所述插芯 150 及所述内套元件 140插入所述收容腔。 所述光纤连接头 100的锁紧点 1304滑入 所述连接头防尘帽 170的滑槽 1704中, 沿着从 "1" 向 "0" 的方向转动所述 连接头防尘帽 170,使得所述锁紧点 1304滑到所述滑槽 1704的末端,实现锁合。 通过上述操作完成所述连接头防尘帽 170与所述光纤连接头 100的扣合。
图 4a和图 4b是光纤连接头 100的正面投影视图, 示出了光纤连接头 100 的内部卡扣解锁结构。 图 4a是当插芯 150不带卡锁翅膀时, 内部解锁结构, 其 中图 4a的左边(a ) 图是光纤连接头 100的内部卡扣初始状态, 右边(b ) 图是 光纤连接头 100的内部卡扣锁紧状态。 图 4b是当插芯 150带有卡锁翅膀时, 内 部解锁结构, 其中图 4b的左边(a ) 图是光纤连接头 100的内部卡扣初始状态, 右边(b ) 图是光纤连接头 100的内部卡扣锁紧状态。
如图 4b所示, 外套元件 130内表面有一个斜凸台 1302, 当光纤连接头 100 和光纤适配器 200处于连接锁紧状态时, 斜凸台 1302避开插芯 150上的卡锁翅 膀 1502, 此时卡锁翅膀 1502与插座 201 (请参见图 5a )上的卡位扣接, 实现连 接锁紧。
值得说明的是, 本实施例还可以釆用不带卡锁翅膀的插芯 150, 此时, 外套 元件 130内表面不存在响应的斜凸台。
进一步地, 外套元件 130内表面的两个对称锁紧点 1304与插座 201 (请参 见图 5a )外表面两个对称的第二滑槽 2015 (请参见图 5a )扣合, 实现双重锁紧 连接。 当需要从光纤适配器 200上拔出光纤连接头 100时, 旋转外套元件 130, 使其从图 4b中的左边图 (a ) 的状态转到右边图 (b ) 的状态。 此时, 插芯 150 上的卡锁翅膀 1502被外套元件 130的斜凸台 1302压下, 从而完成卡扣解锁。 同时, 外套元件 130内表面的两个对称锁紧点 1304也从插座 201外表面的两个 对称的第二滑槽 2015中旋出松开, 此时光纤连接头 100可以从光纤适配器 200 中拔出。
进一步地, 在本实施例中, 外套元件 130可以旋转 45度即可完成连接器的 锁紧和解锁过程。 为了限定外套元件 130的转动角度, 在插芯 150上设计了限 位柱 1504, 并在外套元件 130上设计了左右限位台 1306。 当连接器处于连接锁 紧状态如图 4b左边图所示时, 限位柱 1504被左边的限位台 1306限位, 不能进 一步转动; 当连接器处于松开状态如图 4b右边图所示时, 限位柱 1504被右边 的限位台 1306限位, 不能进一步转动。
图 5a为光纤适配器 200的结构示意图。 图 5b为光纤适配器 200的爆炸分 解图。 如图 5a和 5b所示, 所述光纤适配器 200的一端设置有插座 201。
进一步地, 所述光纤适配器 200另一端还可以设置有插座 202, 所述两个插 座 201和 202, 以及其中心放置的陶瓷套管 212, 可通过超声波焊接在一起。
所述插座 201开设有空腔 2011及插槽 2012, 所述空腔 2011位于所述插座 201中部,所述空腔 2011及插槽 2012沿所述插座 201轴向延伸。所述插槽 2012 环绕在所述空腔 2011的外围。 所述空腔 2011与所述插芯 150相配合, 所述插 槽 2012与所述内套元件 140相配合, 所述插槽 2012设有一定位键 2014, 所述 定位键 2014为沿着所述插座 201轴向方向延伸条状凸块, 使得插槽 2012的截 面形成 C形, 通过与光纤连接头中呈 C形开口的套筒无缝连接, 实现了上述光 纤连接头的盲插, 操作更简便, 进而可以实现光纤连接器的即插即用。
当沿着所述插座 201轴向的反方向看去,所述 C形插槽 2012为带有缺口的 圓形或椭圓形。 当所述光纤连接头 100插入所述光纤适配器 200时, 所述 C形 内套元件与所述定位键 2014相配合, 插入到所述插槽 2012中。 本实施方式中, 所述插座 201和 202为圓柱形。 所述空腔 210为方形腔体或圓形腔体。 所述插 槽 2012为 C形槽。
其中,所述截面呈 C形的插槽 2012用于容纳与所述光纤适配器 200适配的 光纤连接头 100的套筒 180的 C形末端。所述定位键 2014用于连接与所述光纤 适配器 200适配的光纤连接头 100的套筒的开口。 所述定位键 2014的宽度与所 述光纤连接头 100的套筒 180的开口宽度相当。
如图 5a所示,所述光纤插座 201外周开设有第二滑槽 2015 ,所述滑槽 2015 呈螺旋形, 所述滑槽 2015从所述插座 201—端沿所述插座周向延伸, 且所述滑 槽 2015延伸的末端卡合所述锁紧点 1304。 本实施方式中, 所述滑槽 2015与所 述连接头防尘帽 170的滑槽 1704 (请参见图 3a )形状相同。
如图 5b所示, 光纤适配器 200包含 0形密封圈 222、 锁紧螺母 220、 0形 密封圈 240、 插座主体 210、 陶瓷套管 212。 其中, 所述 0形密封圈 240、 锁紧 螺母 220、 0形密封圈 222依次套设于所述插座主体 210上, 所述陶瓷套管 212 插入所述插座主体 210的另一端, 通过 0形密封圈 222紧固。
所述光纤适配器 200包括一适配器防尘帽 230,所述适配器防尘帽 230—端 开设有收容所述光纤适配器 200 的适配器收容腔, 所述收容腔用于当所述光纤 适配器 200插入到所述防尘帽 230中, 收容所述插座 201。
当将所述光纤连接头 100插入所述光纤适配器 200上时, 内套元件 140上 的套筒的喇叭状开口对准所述插槽上的定位键 2014插入, 将所述内套元件 140 插入所述插槽 2012, 使得插芯 150插入所述空腔 2011 , 所述光纤连接头的锁紧 点 1304滑入所述光纤适配器的滑槽 2015内, 转动所述光纤插座 201 , 使得所述 锁紧点 1304滑到所述滑槽 2015的末端, 实现锁紧。
通过以上技术方案, 本发明实施例提供的光纤连接器通过光纤连接头呈 C 形开口的套筒与所述光纤适配器的 C形插槽的无缝连接, 实现了上述光纤连接 器的盲插, 操作更简便, 进而可以实现光纤连接器的即插即用。 本发明实施例 提供的光纤连接器还达到了防水等级的最高级别。
以上所述, 仅为本发明较佳的具体实施方式, 但本发明的保护范围并不局 限于此, 任何熟悉本技术领域的技术人员在本发明揭露的技术范围内, 可轻易 想到的变化或替换, 都应涵盖在本发明的保护范围之内。 因此, 本发明的保护 范围应该以权利要求的保护范围为准。

Claims

权 利 要 求 书
1、 一种光纤连接头 (100), 其特征在于, 包括:
光缆 ( 110),
一内套元件(140), 内部设有一空腔, 所述光缆(110)延伸出的光纤收容 于所述空腔内, 所述内套元件 (140) —端与所述光缆(110) 固定, 另一端设 置有套筒 (180) ,
一外套元件(130), 所述外套元件(140)套设于所述内套元件 (140)外 侧, 所述外套元件(140) 能够围绕所述套筒 (180) 的轴向旋转,
其中,所述内套元件(140) 的套筒 (180)至少一部分凸出于所述外套元件 ( 130)之外, 所述套筒 (180) 凸出于所述外套元件(130)之外的末端设有一 个开口, 使得所述套筒 (180) 的末端截面呈 C形。
1、 如权利要求 1所述的光纤连接头 (100), 其特征在于, 所述套筒 (180) 呈 C形的末端用于连接与所述光纤连接头( 100)适配的光纤适配器( 200 )的 C 形插槽(2012)。
3、如权利要求 1或 1所述的光纤连接头( 100 ),其特征在于,所述套筒( 180 ) 的开口用于连接与所述光纤连接头 (100)适配的光纤适配器( 200 ) 的定位键
( 2014 )0
4、 如权利要求 1至 3任意一项所述的光纤连接头 ( 100), 其特征在于, 所 述套筒 (180)用于连接与所述光纤连接头 (100)适配的光纤适配器( 200 ) 的 插槽(2012), 其中, 所述套筒 (180) 的末端呈 C形的截面与所述光纤适配器
( 200 ) 的插槽 UOU)呈 C形的截面适配。
5、 如权利要求 1至 4任一项所述的光纤连接头 ( 100), 其特征在于, 所述 套筒 (180) 的开口呈喇叭形。
6、 如权利要求 5所述的光纤连接头 (100), 其特征在于, 所述套筒 (180) 的喇叭形开口的开口角度大于等于 10度且小于等于 30度。 7、 如权利要求 6所述的光纤连接头 (100), 其特征在于, 所述套筒 (180) 的喇八形开口的开口角度为 15度或 22.5度。
8、 一种光纤适配器( 200 ), 其特征在于, 包括:
所述光纤适配器 ( 200 ) 的一端设置有插座(201 ), 所述插座(201 )设有 用于容纳光纤的空腔(2011 ) 以及插槽 (2012),
所述空腔( 2011 )位于所述插座( 201 ) 中部,
所述插槽( )环绕在所述空腔( 2011 ) 的外围, 所述插座( 201 )上设 有定位键(2014), 使得所述插槽(2012 ) 的截面呈 C形。
9、 如权利要求 8所述的光纤适配器( 200 ), 其特征在于, 所述截面呈 C形 的插槽(2012)用于容纳与所述光纤适配器( 200 )适配的光纤连接头 (100) 的套筒的 C形末端。
10、如权利要求 8所述的光纤适配器( 200 ),其特征在于,所述定位键( 2014 ) 用于连接与所述光纤适配器( 200 )适配的光纤连接头 (100) 的套筒的开口。
11、 如权利要求 8或 10任意一项所述的光纤适配器, 所述定位键(2014) 的宽度与所述光纤连接头 (100) 的开口的宽度相当。
12、 一种光纤连接器(10), 包括光纤连接头 (100)和光纤适配器( 200 ), 其特征在于, 包括:
所述光纤连接头 (100) 包括光缆(110), —内套元件(140), 内部设有一 空腔, 所述光缆(110)延伸出的光纤收容于所述空腔内, 所述内套元件(140) 一端与所述光缆(110) 固定, 另一端设置有套筒 (180) ,一外套元件 (130), 所述外套元件(140)套设于所述内套元件(140)外侧, 所述外套元件 (140) 能够围绕所述套筒(180)的轴向旋转, 其中,所述内套元件(140)的套筒(180) 至少一部分凸出于所述外套元件(130)之外, 所述套筒 (180) 凸出于所述外 套元件(130)之外的末端设有一个开口, 使得所述套筒(180)的末端截面呈 C 形, 使得所述呈 C形开口的套筒 (180) 与所述光纤适配器( 200 ) 的 C形插槽 (2012)相连接;
所述光纤适配器 ( 200 ) 的一端设置有插座(201 ), 所述插座(201 )设有 用于容纳光纤的空腔(2011 ) 以及插槽(2012), 所述空腔(2011 )位于所述插 座(201 ) 中部, 所述插槽(2012 )环绕在所述空腔(2011 ) 的外围, 所述插座 ( 201 )上设有定位键( 2014 ), 使得所述插槽( 20U ) 的截面呈 C形。
13、 如权利要求 12所述的光纤连接器 (10), 其特征在于, 所述光纤连接 头 (100) 的外套元件(130) 内壁设有至少一个凸块( 1304 )。
14、 如权利要求 12所述的光纤连接器 ( 10), 其特征在于, 所述光纤适配 器( 200 ) 的插座(201 ) 的外表面设有至少一个滑槽(2015)。
15、 如权利要求 13或 14所述的光纤连接器(10), 其特征在于, 所述光纤 连接头 (100)插入所述光纤适配器( 200 ), 所述凸块( 1304 )滑动连接于所述 滑槽 (2015)上。
PCT/CN2013/086983 2013-11-12 2013-11-12 光纤连接头、光纤适配器及光纤连接器 WO2015070382A1 (zh)

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KR1020187030430A KR102067453B1 (ko) 2013-11-12 2013-11-12 광섬유 조인트, 광섬유 어댑터 및 광섬유 접속기
CA2885821A CA2885821C (en) 2013-11-12 2013-11-12 Optical fiber joint, optical fiber adapter and optical fiber connector
EP13823910.8A EP2894501B1 (en) 2013-11-12 2013-11-12 Optical fibre joint and optical fibre connector
CN201380002934.2A CN105339822B (zh) 2013-11-12 2013-11-12 光纤连接头、光纤适配器及光纤连接器
US14/191,174 US9557493B2 (en) 2013-11-12 2014-02-26 Optical fiber joint, optical fiber adapter and optical fiber connector
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CN107656339A (zh) 2018-02-02
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