CN112415670B - Ferrule assembly, connector, optical fiber adapter and optical fiber interface structure - Google Patents
Ferrule assembly, connector, optical fiber adapter and optical fiber interface structure Download PDFInfo
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- CN112415670B CN112415670B CN202011480873.9A CN202011480873A CN112415670B CN 112415670 B CN112415670 B CN 112415670B CN 202011480873 A CN202011480873 A CN 202011480873A CN 112415670 B CN112415670 B CN 112415670B
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- positioning
- core
- optical fiber
- fiber
- ferrule
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- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/381—Dismountable connectors, i.e. comprising plugs of the ferrule type, e.g. fibre ends embedded in ferrules, connecting a pair of fibres
- G02B6/3825—Dismountable 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
-
- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3833—Details of mounting fibres in ferrules; Assembly methods; Manufacture
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- 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
- G02B6/24—Coupling light guides
- G02B6/36—Mechanical coupling means
- G02B6/38—Mechanical coupling means having fibre to fibre mating means
- G02B6/3807—Dismountable connectors, i.e. comprising plugs
- G02B6/3873—Connectors using guide surfaces for aligning ferrule ends, e.g. tubes, sleeves, V-grooves, rods, pins, balls
- G02B6/3885—Multicore or multichannel optical connectors, i.e. one single ferrule containing more than one fibre, e.g. ribbon type
Abstract
The embodiment of the application discloses lock pin subassembly, connector, optic fibre adapter and fiber interface structure includes: a connector; the connector includes a housing assembly and a ferrule assembly disposed at least partially within the housing assembly; the ferrule assembly comprises a tail handle, a first positioning part and a multi-core optical fiber; the fiber core of the multi-core optical fiber is arranged in the tail handle in a penetrating mode; the first positioning part is arranged on the tail handle; and a fiber optic adapter; the fiber optic adapter includes a securing portion; the fixing part is matched with the first positioning part in a rotation stopping way, so that the circumferential position of the multi-core optical fiber is relatively fixed. The ferrule assembly, the connector, the optical fiber adapter and the optical fiber interface structure have the advantage of high circumferential positioning precision.
Description
Technical Field
The present application relates to the field of optical communications, and in particular, to a ferrule assembly, a connector, an optical fiber adapter, and an optical fiber interface structure.
Background
Multi-Core Fiber (Multi Core Fiber) is an optical Fiber with a plurality of Fiber cores in a common cladding region, and has the characteristics of multiple physical channels, low crosstalk index among the Fiber cores, good attenuation consistency of each Fiber Core and the like due to the fact that the integration density of a unit area of a transmission line can be improved, so that the Multi-Core Fiber is more and more widely applied to an ultra-large-capacity optical Fiber communication system, a novel large-capacity Multi-service access network, a distributed optical Fiber sensing system and medical equipment.
Different from the situation that the fiber cores of the single-core optical fibers are arranged at the central position, as the plurality of fiber cores of the multi-core optical fibers surround the periphery of the center of the multi-core optical fibers along the circumferential direction, when two sections of multi-core optical fibers are connected, a connector with the multi-core optical fibers is usually configured at two ends of an optical fiber adapter respectively, and the fiber cores of the array are set at a preset array position in a high-precision rotation alignment mode, namely, around the axial direction of the multi-core optical fibers, so that the fiber cores of the two sections of multi-core optical fibers are aligned with each other to realize the smoothness of each channel; therefore, the circumferential positioning of the multi-core fiber is crucial for the signal transmission of each channel of the multi-core fiber. In the prior art, the multi-core optical fiber, a tail handle and a shell of a connector are sequentially fixed in circumferential positions, and then are circumferentially fixed by the shell and an adapter, so that the circumferential positioning precision between two sections of optical fibers is poor due to multiple positioning, and the transmission effect is influenced.
Disclosure of Invention
In view of this, embodiments of the present application are expected to provide a ferrule assembly, a connector, an optical fiber adapter, and an optical fiber interface structure, so as to solve the problem of poor circumferential positioning accuracy in the prior art.
In order to achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:
a fiber optic interface structure, comprising: a connector; the connector includes a housing assembly and a ferrule assembly disposed at least partially within the housing assembly; the ferrule assembly comprises a tail handle, a first positioning part and a multi-core optical fiber; the fiber core of the multi-core optical fiber is arranged in the tail handle in a penetrating mode; the first positioning part is arranged on the tail handle; and a fiber optic adapter; the fiber optic adapter includes a securing portion; the fixing part is in rotation stopping fit with the first positioning part so that the circumferential positions of the multi-core optical fibers are relatively fixed.
Furthermore, the first positioning part is one of a positioning column and a positioning hole; the fixing part is the other one of the positioning column and the positioning hole.
Further, when the first positioning part is a positioning column, a tapered section is arranged at one end of the first positioning part, which is far away from the tail handle; when the first positioning part is a positioning hole, the inlet end of the first positioning part is provided with a horn mouth.
Further, the ferrule assembly comprises a ferrule which is fixedly arranged on one end of the tail handle; the fiber core sequentially penetrates through the tail handle and the inserting core; the optical fiber adapter comprises a body, a support part and a sleeve; an axially through channel is formed in the body; the supporting part is supported in the passage and divides the passage into at least two sub-mounting holes for being plugged with the shell assembly; the sleeve is hollow and is arranged along the axial direction of the channel, the sleeve is fixedly arranged on the supporting part and communicated with the two sub-mounting holes, and one end of the ferrule is inserted in the sleeve; the fixing portion is disposed on the body or the support portion.
The ferrule assembly comprises a tail handle, a ferrule, a first positioning part and a multi-core optical fiber; the multi-core optical fiber comprises a cladding and at least two fiber cores arranged in the cladding; the inserting core is fixedly arranged at one end of the tail handle; the fiber core sequentially penetrates through the tail handle and the inserting core; the first positioning part is arranged on the tail handle; the first positioning portion can be in rotation-stopping fit with the fixing portion so that the circumferential position of the multi-core optical fiber is relatively fixed.
Further, the tail handle comprises a handle body and a direction ring sleeved on the handle body; the inserting core is fixedly arranged at one end of the handle body, the fiber core sequentially penetrates through the handle body and the inserting core, and the first positioning part is fixed on the direction ring; the direction ring rotates to a preset position along the circumferential direction of the handle body and then is fixed.
Further, the direction ring is formed with a projection protruding outward in the radial direction, the projection is formed with a mounting hole in the axial direction of the shank body, and the first positioning portion is inserted in the mounting hole.
A connector comprises a shell component and the ferrule component; the shell assembly comprises an accommodating space which is through from front to back, and the tail handle is fixedly arranged in the accommodating space.
Further, the shell assembly comprises a shell and a rear sleeve, the shell and the rear sleeve are nested to form the accommodating space which is communicated from front to back, and one end, far away from the tail handle, of the insertion core protrudes out of the accommodating space.
Furthermore, the first positioning portion is a positioning column, and a yielding portion for avoiding the first positioning portion is formed on a wall surface of the accommodating space.
Further, the shell assembly comprises a tail sleeve and an elastic piece; the elastic piece is arranged in the accommodating space, one end of the elastic piece is abutted against the rear sleeve, and the other end of the elastic piece is abutted against the tail handle; the tail sleeve is nested on one end of the rear sleeve far away from the shell.
An optical fiber adapter comprises a body, a supporting part, a sleeve and a fixing part; an axially through channel is formed in the body; the supporting part is supported in the channel and divides the channel into at least two sub-mounting holes for being plugged with the shell assembly; the sleeve is hollow and is arranged along the axial direction of the channel, and the sleeve is fixedly arranged on the supporting part and communicated with the two sub-mounting holes; the fixing part is arranged on the body or the supporting part; the fixing part can be in rotation-stop fit with the first positioning part so that the circumferential positions of the multi-core optical fiber and the sleeve are relatively fixed.
Further, the fixing portion is disposed on the supporting portion along an axial direction of the passage, and both ends of the fixing portion extend into the two sub-mounting holes, respectively.
The ferrule assembly, the connector, optical fiber adapter and fiber interface structure are through setting up first location portion and setting up the fixed part on optical fiber adapter on the ferrule assembly, first location portion sets up on the caudal peduncle, first location portion can only change the cooperation with the fixed part, restrict first location portion from this and take place circumferential movement, and then restriction caudal peduncle and ferrule take place circumferential direction in optical fiber adapter, from this, directly carry out circumferential direction location through caudal peduncle 21 and optical fiber adapter 8, the process of carrying out many times circumferential direction location through the shell in the middle of having reduced, make circumferential direction positioning accuracy high.
Drawings
FIG. 1 is a schematic diagram of a fiber optic interface configuration according to an embodiment of the present application, wherein the connector is separate from the fiber optic adapter;
FIG. 2 is a schematic cross-sectional view of a fiber optic interface configuration according to an embodiment of the present application, wherein a connector is mated with a fiber optic adapter;
fig. 3 is a schematic structural diagram of a ferrule assembly according to an embodiment of the present application;
figure 4 is an exploded schematic view of a ferrule assembly according to another embodiment of the present application;
FIG. 5 is an exploded view of a ferrule assembly according to yet another embodiment of the present application;
FIG. 6 is a schematic structural diagram of a connector according to an embodiment of the present application;
FIG. 7 is an exploded view of the connector of FIG. 6;
FIG. 8 is a schematic structural diagram of a fiber optic adapter according to an embodiment of the present application;
FIG. 9 isbase:Sub>A view A-A of FIG. 8;
fig. 10 is a view from direction B of fig. 1, showing the relative position relationship between the multicore fiber and the first positioning portion, in which the housing assembly, the direction ring, and the tail handle are omitted.
Detailed Description
It should be noted that, in the case of conflict, the technical features in the examples and examples of the present application may be combined with each other, and the detailed description in the specific embodiments should be interpreted as an explanation of the present application and should not be construed as an improper limitation of the present application.
In the description of the embodiments of the present application, the "up", "down", "left", "right", "front", "back" orientation or positional relationship is based on the orientation or positional relationship shown in fig. 1, it is to be understood that these orientation terms are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present application.
A ferrule assembly, as shown in fig. 1 to 7 and 10, includes a tail handle 21, a ferrule 22, a first positioning portion 23, and a multicore fiber 9. The ferrule assembly 2 is adapted to mate with a fiber optic adapter 8 (mentioned below).
The multicore fiber 9 includes a cladding 92 and at least two cores 91 disposed in the cladding 92. The core 91 may be a glass core. In general, the cores 91 may be arranged in a four-core rectangular configuration or a seven-core circular configuration depending on the number of cores. Taking a seven-core example, the plurality of cores 91 may be arranged in a polar array including a central core 91a and other cores 91b, 91c, 91d, etc. satellite-wise around the central core, and the radial distances from the other cores 91b, 91c, 91d to the central core 91a may be set generally equal for design convenience. In addition, the multi-core optical fiber 9 further includes a plastic sheath 93 wrapped around the cladding 92 to provide protection.
The inserting core 22 is fixedly arranged at one end of the tail handle 21; the plurality of cores 91 are sequentially inserted through the tail handle 21 and the ferrule 22. The tail 21 and the ferrule 22 are thereby fixed in circumferential position relative to the core 91, and when the tail 21 is rotated about its axis 21a, the circumferential positions of the ferrule 22 and the plurality of cores 91 relative to the axis 21a are also changed. It can be understood that, usually, the plastic sheath 93 of the multi-core optical fiber 9 is not inserted into the tail handle 21 and the ferrule 22, and the cladding 92 stripped of the plastic sheath 93 is inserted into the tail handle 21 and the ferrule 22 together with the core 91 until the core 91 is flush with the end of the ferrule 22 far away from the tail handle 21.
The first positioning portion 23 is disposed on the tail handle 21, and the first positioning portion 23 can be in rotation-stop fit with a fixing portion 84 (mentioned below), so as to limit circumferential movement of the first positioning portion 23, and further limit circumferential rotation of the tail handle 21 and the ferrule 22 in the optical fiber adapter 8, so that circumferential positioning is directly performed on the tail handle 21 and the optical fiber adapter 8, and a process of performing multiple circumferential positioning through a housing in the middle is reduced, so that circumferential positioning accuracy is high.
It should be understood that the transmission between two segments of multi-core fibers is realized by aligning the cores with each other through the sequential circumferential positioning of the ferrule assembly and the fiber adapter to ensure that the transmission channel is unobstructed. Therefore, the multicore fibers and the ferrule assembly themselves need to be circumferentially positioned, so that the multicore fibers of the connectors on both sides of the fiber adapter are located at the same circumferential position.
In one possible embodiment, as shown in fig. 3 to 7, the tail handle 21 includes a handle body 211 and a direction ring 212 disposed on the handle body 211. The handle body 211 can be made of ceramic, plastic or metal; the directional ring 212 is made of ceramic, plastic or metal.
The ferrule 22 is fixedly disposed at one axial end of the handle body 211, the core 91 sequentially penetrates the handle body 211 and the ferrule 22, and the first positioning portion 23 is fixed to the direction ring 212. Wherein, the first positioning portion 23 can be integrally connected with the direction ring 212, so that the connection rigidity of the two is good; the first positioning portion 23 and the direction ring 212 may be fixed by welding, gluing, interference fit, or the like, in consideration of cost, machining accuracy, and material properties.
The direction ring 212 is fixed after being rotated to a predetermined position in the circumferential direction of the handle body 211. The fixing means may be gluing, welding, etc. The plurality of fiber cores 91 of the multi-core fiber 9 are arranged in the ferrule 22 in a penetrating manner, after the first positioning portion 23 is rotated uniformly to the direction with the fixed angle relative to the fiber cores 91 by rotating the direction ring 212 in the circumferential direction, the direction ring 212 is fixed with the handle body 211 finally, so that the circumferential relative positions of the different multi-core fibers 9 and the corresponding first positioning portions 23 are uniform, the circumferential positions of the multi-core fiber 9 and the ferrule assembly 2 are fixed, the circumferential positioning of the multi-core fiber 9, the first positioning portions 23 and the fixing portions 84 of the fiber adapter 8 is completed by the first positioning portions 23 of the ferrule assembly 2 and the fixing portions 84 of the fiber adapter 8, the two sections of multi-core fibers 9 are respectively connected in the fiber adapter 8 in a butt joint manner by the circumferential positioning, and the successful signal transmission of the different multi-core fibers 9 is ensured.
Specifically, as shown in fig. 10, taking the fiber core 91d as an example, the connection line from the first positioning portion 23 to the center of the multicore fiber 9 forms an angle C with the connection line from the fiber core 91d to the center of the multicore fiber 9, and if the direction ring 212 is not controlled to rotate to a predetermined position along the circumferential direction of the handle body 211, C may be an arbitrary value, and at this time, even if the first positioning portion 23 and the fixing portion 84 complete circumferential positioning, the fiber cores 91d of the two multicore fibers 9 are obviously not necessarily aligned, the channel is disconnected, and signal transmission cannot be completed. If the first positioning portion 23 is driven by the direction ring 212 (not shown) to rotate circumferentially along the adjustment path shown by the dotted line until reaching the predetermined position, and then fixed, the circumferential relative positions of the multicore fiber 9 and the corresponding first positioning portion 23 are ensured to be uniform, and the circumferential positions of the multicore fiber 9 and the ferrule assembly 2 are ensured to be fixed.
In practical operation, the predetermined position may be determined in a variety of manners, for example, the connection included angle C of the fiber core 91d may be directly measured, and the direction ring 212 reaching the predetermined position that meets the predetermined value is represented, otherwise, the first positioning portion 23 is driven by the direction ring 212 to rotate circumferentially along the adjustment path shown by the dotted line, and then the detection is repeated. Alternatively, a standard connector may be directly provided, the ferrule assembly 2 may be connected to the standard connector in a coupling manner, a signal may be sent from one end of the standard connector to the channel represented by each core, and if a corresponding signal is received on the core 91 at one end of the ferrule assembly 2, the direction ring 212 may be represented to reach a predetermined position. Depending on the number of cores 91 in the multicore fiber 9 and the arrangement of the cores 91, the number of signal detections for the cores 91 should be greater than or 2.
In one possible embodiment, as shown in fig. 3 and 4, the handle body 211 is a cylinder with a through hole (not shown) in the middle for the fiber core 91 to pass through, and the direction ring 212 is sleeved on an end of the handle body 211 close to the ferrule 22 to facilitate processing of the handle body 211.
In one possible embodiment, as shown in fig. 3, 4 and 7, the shank body 211 is a stepped shaft having a through hole (not shown) in the middle thereof, through which the core 91 passes; the ferrule 22 is fixedly disposed on the larger diameter end of the handle body 211, and the direction ring 212 is disposed on the larger diameter end of the handle body 211.
In one possible embodiment, as shown in fig. 3 and 4, the direction ring 212 is formed with a projection 2121 protruding radially outward, the projection 2121 is formed with a mounting hole 2122 along the axial direction of the stem body 211, the first positioning portion 23 is a positioning post, and the first positioning portion 23 is inserted into the mounting hole 2122, so as to facilitate the processing of the first positioning portion 23 and ensure high dimensional accuracy, so as to facilitate the axial fitting of the fixing portion 84 of the optical fiber adapter 8.
There is further provided a connector, as shown in fig. 1 to 7 and 10, including a housing assembly 71 and the ferrule assembly 2 of each of the above embodiments. The housing assembly 71 includes an accommodation space 711 extending through the front and rear, and the tail lever 21 is fixed in the accommodation space 711. The housing assembly 71 can be inserted into the sub-mounting hole 811a of the fiber optic adapter 8. The circumferential direction of the accommodation space 711 can be closed, so that the multi-core optical fiber is sealed in the contact process, and dust is prevented.
One possible embodiment, as shown in fig. 6 and 7, shell assembly 71 includes an outer shell 712 and a rear housing 713. The housing 712 can be a casing with a through hole, the rear sleeve 713 can be a cylinder with a through hole, the housing 712 and the rear sleeve 713 are fixed in a clamping manner, and the housing 712 and the rear sleeve 713 are nested to form a containing space 711 which is through from front to back, so that the ferrule assembly 2 can be conveniently contained.
It is understood that the design of the structure is various, and therefore, all the components in the ferrule assembly 2 are not necessarily in the accommodating space 711, and only the tail handle 21 is required to be arranged and fixed in the accommodating space 711, and the rest of the components are directly or indirectly fixed with the tail handle 21.
An end of the ferrule 22 away from the tail handle 21 protrudes out of the accommodating space 711, and an end of the ferrule 22 away from the rear sleeve 713 protrudes from the housing 712, so that the end of the ferrule 22 away from the tail handle 21 is conveniently inserted into the sleeve 83. The ferrules 22 of the ferrule assemblies 2 of the two connectors 7 can be inserted from both sides of the sleeve 83, respectively, to achieve mating, and the sleeve 83 provides functions of sealing, protection, guiding, and the like.
In one possible embodiment, as shown in fig. 6 and 7, when the first positioning portion 23 is a positioning post, a relief portion 716 for avoiding the first positioning portion 23 is formed on a wall surface of the accommodating space 711. Specifically, the receding portion 716 may be formed by recessing the outer shell 712, or by perforating the rear cover 713, as long as interference with the first positioning portion 23 is prevented.
3-7, shell assembly 71 includes a boot 714 and a spring 715; the elastic member 715 may be a spring. The elastic piece 715 is arranged in the accommodating space 711, one end of the elastic piece 715 abuts against the rear sleeve 713, and the other end abuts against the tail handle 21; a tail sleeve 714 is nested on an end of the rear sleeve 713 distal from the housing 712. The elastic member 715 provides a force to the ferrule 22 through the tail handle 21, and when the ferrules 22 of the ferrule assemblies 2 of the two connectors 7 are inserted from both sides of the sleeve 83, respectively, the elastic member 715 changes volume so that the two ferrules 22 do not come into hard contact, and the force of the elastic member 715 is relied on to make the two ferrules 22 abut tightly.
There is also provided a fibre optic adapter for mating with a connector 7; as shown in fig. 1, 2, 8, and 9, the optical fiber adapter 8 includes a body 81, a support 82, a sleeve 83, and a fixing portion 84. The sleeve 83 may be made of ceramic.
An axially through-going channel 811 is formed in the body 81. The support portion 82 is supported within the passageway 811 and divides the passageway 811 into at least two sub-mounting holes 811a for plugging with the shell assembly 71. The sleeve 83 is hollow and arranged along the axial direction of the channel 811, the sleeve 83 is fixedly arranged on the supporting part 82 and communicated with the two sub-mounting holes 811a; one end of the insertion core 22 far away from the tail handle 21 can be inserted into the sleeve 83; the fixing portion 84 is provided on the body 81 or the supporting portion 82.
The fixing portion 84 can be in rotation-stopping fit with the first positioning portion 23, so that circumferential movement of the first positioning portion 23 is limited, circumferential rotation of the tail handle 21 and the ferrule 22 in the optical fiber adapter 8 is further limited, circumferential positioning is directly performed on the tail handle 21 and the optical fiber adapter 8, the process of performing multiple circumferential positioning through the shell in the middle is reduced, and circumferential positioning accuracy is high.
One possible embodiment, as shown in fig. 9, the fixing portions 84 are disposed on the supporting portion 82 along the axial direction of the passageway 811, and both ends of the fixing portions 84 extend into the two sub-mounting holes 811a, respectively, so that one fixing portion 84 can be fitted with the first positioning portions 23 of the ferrule assemblies 2 of the two connectors 7, respectively, so that the ferrule assemblies 2 at both ends have good circumferential accuracy.
There is further provided a fiber optic interface structure, as shown in fig. 1 to 10, which includes the connector 7 in the above embodiments and the fiber optic adapter 8 in the above embodiments. Specifically, the connector 7 includes a housing assembly 71 and a ferrule assembly 2 disposed at least partially within the housing assembly 71; the ferrule assembly 2 comprises a tail handle 21, a first positioning part 23 and a multi-core optical fiber 9; the fiber core 91 of the multi-core fiber 9 is arranged in the tail handle 21 in a penetrating way; the first positioning portion 23 is provided on the tail handle 21. The fiber optic adapter 8 includes a body 81 and a fixing portion 84. A sub-mounting hole 811a is formed in the body 81. The sub-mounting hole 811a is inserted into the housing assembly 71.
The fixing portion 84 is in rotation stopping fit with the first positioning portion 23, so that circumferential movement of the first positioning portion 23 is limited, circumferential rotation of the tail handle 21 and the ferrule 22 in the optical fiber adapter 8 is limited, and the circumferential position of the multi-core optical fiber 9 is relatively fixed, so that circumferential position fixing of the multi-core optical fiber, the tail handle of the connector and the adapter is sequentially performed, a process of performing circumferential positioning for multiple times through a shell in the middle is reduced, and circumferential positioning accuracy is high.
In a possible embodiment, the first positioning portion 23 is one of a positioning post and a positioning hole; the fixing portion 84 is a positioning post and another positioning hole, and the two holes are inserted and matched. Of course, other engagement means such as a slot lock may be used as long as the circumferential rotation of the tail handle 21 and the ferrule 22 in the fiber optic adapter 8 is prevented.
The first positioning portion 23 and the fixing portion 84 can be made of ceramic, plastic or metal. When the first positioning part 23 is a positioning column, one end of the first positioning part 23 far away from the tail handle 21 is provided with a taper section; when the first positioning portion 23 is a positioning hole, a flare opening is disposed at an inlet end of the first positioning portion 23.
In one possible embodiment, as shown in fig. 1 to 9, the outer side of the casing 712 includes a resilient clip 7121, and the body 81 is formed with an axial limiting hole (not shown) matching with the resilient clip 7121 to limit the axial displacement between the casing 712 and the body 81.
In one possible embodiment, the ferrule assembly 2 includes a ferrule 22, the ferrule 22 being fixedly mounted on one end of the tail handle 21; the fiber core 91 sequentially penetrates through the tail handle 21 and the ferrule 22 until the fiber core is flush with one end of the ferrule 22 far away from the tail handle 21. The optical fiber adapter 8 includes a support 82 and a sleeve 83 ceramic; a channel 811 which can be axially penetrated and circumferentially closed is formed in the body 81; the support portion 82 is supported within the passageway 811 and divides the passageway 811 into at least two sub-mounting holes 811a for plugging with the shell assembly 71. The sleeve 83 is hollow and arranged along the axial direction of the channel 811, the sleeve 83 is fixedly arranged on the supporting part 82 and communicated with the two sub-mounting holes 811a, and one end of the insertion core 22 far away from the tail handle 21 is inserted in the sleeve 83; the fixing portion 84 is provided on the body 81 or the supporting portion 82; therefore, the circumferential position of the multi-core optical fiber 9 is relatively fixed, circumferential position fixing of the multi-core optical fiber, the tail handle of the connector and the adapter is sequentially achieved, the process of performing multiple circumferential positioning through the shell in the middle is reduced, and circumferential positioning accuracy is high.
The various embodiments/implementations provided herein may be combined with each other without contradiction.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. A fiber optic interface structure, comprising:
a connector (7); the connector (7) comprises a shell assembly (71) and a ferrule assembly (2) at least partially disposed within the shell assembly (71); the ferrule assembly (2) comprises a tail handle (21), a first positioning part (23) and a multi-core optical fiber (9); a fiber core (91) of the multi-core optical fiber (9) is arranged in the tail handle (21) in a penetrating mode; the first positioning part (23) is arranged on the tail handle (21); the ferrule assembly (2) comprises a ferrule (22), and the ferrule (22) is fixedly arranged at one end of the tail handle (21); the fiber core (91) sequentially penetrates through the tail handle (21) and the inserting core (22);
and a fibre optic adapter (8); the optical fiber adapter (8) comprises a body (81), a support part (82), a sleeve (83) and a fixing part (84); the sleeve (83) is fixedly arranged on the supporting part (82), and one end of the ferrule (22) is inserted into the sleeve (83); the fixing part (84) is arranged on the body (81) or the supporting part (82), and one end of the first positioning part (23) is inserted into the fixing part (84);
wherein the fixing part (84) is in rotation-stop fit with the first positioning part (23) so that the circumferential position of the multi-core optical fiber (9) is relatively fixed; the tail handle (21) comprises a handle body (211) and a direction ring (212) sleeved on the handle body (211); the inserting core (22) is fixedly arranged at one end of the handle body (211), the fiber core (91) sequentially penetrates through the handle body (211) and the inserting core (22), and the first positioning part (23) is fixed on the direction ring (212).
2. The optical fiber interface structure of claim 1, wherein the first positioning portion (23) is one of a positioning post and a positioning hole; the fixing part (84) is the other one of the positioning column and the positioning hole.
3. The optical fiber interface structure according to claim 2, wherein when the first positioning portion (23) is a positioning post, an end of the first positioning portion (23) away from the tail handle (21) is provided with a taper section;
when the first positioning part (23) is a positioning hole, a horn mouth is arranged at the inlet end of the first positioning part (23).
4. A ferrule assembly to be mated with the fiber optic adapter (8) of claim 1, wherein the ferrule assembly (2) comprises a tail handle (21), a ferrule (22), a first positioning portion (23), and a multi-core fiber (9);
the multi-core optical fiber (9) comprises a cladding (92) and at least two cores (91) arranged in the cladding (92);
the inserting core (22) is fixedly arranged at one end of the tail handle (21); the fiber core (91) sequentially penetrates through the tail handle (21) and the insertion core (22); the first positioning part (23) is arranged on the tail handle (21);
the first positioning portion (23) is capable of fitting with the fixing portion (84) in a rotation stop manner so that the circumferential position of the multicore fiber (9) is relatively fixed.
5. The ferrule assembly according to claim 4, wherein the direction ring (212) is formed with a boss (2121) radially outwardly protruded, the boss (2121) is formed with a mounting hole (2122) in an axial direction of the shank body (211), and the first positioning portion (23) is inserted in the mounting hole (2122).
6. A connector characterized by comprising a housing assembly (71) and a ferrule assembly (2) according to any one of claims 4 to 5; the shell assembly (71) comprises an accommodating space (711) which is through from front to back, and the tail handle (21) is fixedly arranged in the accommodating space (711).
7. The connector according to claim 6, wherein the housing assembly (71) comprises a housing (712) and a rear sleeve (713), the housing (712) is nested with the rear sleeve (713) to form the accommodation space (711) penetrating from front to back, and one end of the ferrule (22) away from the tail stem (21) protrudes out of the accommodation space (711).
8. The connector according to claim 6, wherein the first positioning portion (23) is a positioning post, and a relief portion (716) for avoiding the first positioning portion (23) is formed on a wall surface of the accommodating space (711).
9. The connector of claim 7, wherein the shell assembly (71) includes a boot (714) and a spring (715); the elastic piece (715) is arranged in the accommodating space (711), one end of the elastic piece (715) is abutted against the rear sleeve (713), and the other end of the elastic piece (715) is abutted against the tail handle (21); the tail sleeve (714) is nested on an end of the rear sleeve (713) remote from the outer shell (712).
10. A fiber optic adapter to mate with the connector (7) of claim 1, wherein the fiber optic adapter (8) comprises a body (81), a support (82), a sleeve (83), and a securing portion (84);
an axially through channel (811) is formed in the body (81);
the supporting part (82) is supported in the channel (811) and divides the channel (811) into at least two sub-mounting holes (811 a) for plugging with the shell component (71);
the sleeve (83) is hollow and is arranged along the axial direction of the channel (811), and the sleeve (83) is fixedly arranged on the supporting part (82) and communicated with the two sub-mounting holes (811 a);
the fixing portion (84) is provided on the body (81) or the support portion (82);
the fixing portion (84) can be in rotation stop fit with the first positioning portion (23) so that the circumferential positions of the multi-core optical fiber (9) and the sleeve (83) are relatively fixed.
11. The optical fiber adapter according to claim 10, wherein the fixing portion (84) is provided on the supporting portion (82) in an axial direction of the passage (811), and both ends of the fixing portion (84) extend into the two sub-mounting holes (811 a), respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011480873.9A CN112415670B (en) | 2020-12-15 | 2020-12-15 | Ferrule assembly, connector, optical fiber adapter and optical fiber interface structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011480873.9A CN112415670B (en) | 2020-12-15 | 2020-12-15 | Ferrule assembly, connector, optical fiber adapter and optical fiber interface structure |
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| CN112415670A CN112415670A (en) | 2021-02-26 |
| CN112415670B true CN112415670B (en) | 2023-02-03 |
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| CN112946831A (en) * | 2021-04-09 | 2021-06-11 | 广东亿源通科技股份有限公司 | Connecting structure of adapter and connector |
| CN113530939B (en) * | 2021-06-23 | 2023-01-13 | 武汉光迅科技股份有限公司 | Connecting device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520489A (en) * | 2012-01-11 | 2012-06-27 | 深圳日海通讯技术股份有限公司 | Optical fiber connector and assembly method thereof |
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| US7296935B1 (en) * | 2007-02-09 | 2007-11-20 | Us Conec, Ltd. | Ferrule adapter and ferrule adapter assembly |
| US7762726B2 (en) * | 2007-12-11 | 2010-07-27 | Adc Telecommunications, Inc. | Hardened fiber optic connection system |
| US10509178B1 (en) * | 2018-08-31 | 2019-12-17 | Corning Research & Development Corporation | Fiber optic adapter assemblies including a selectively lockable adapter member |
| CN111308615B (en) * | 2020-02-19 | 2021-10-01 | 华为技术有限公司 | Optical fiber connector plug, optical fiber adapter and optical fiber connector |
| CN111708126B (en) * | 2020-06-24 | 2022-01-11 | 武汉光迅科技股份有限公司 | Adapter assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520489A (en) * | 2012-01-11 | 2012-06-27 | 深圳日海通讯技术股份有限公司 | Optical fiber connector and assembly method thereof |
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