Ferrule assembly, connector, and assembling method of ferrule assembly

Abstract

The embodiment of the present application discloses a ferrule assembly, a connector and an assembly method of the ferrule assembly, comprising a tail handle, a ferrule 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 tail handle comprises a handle body and a direction ring sleeved on the handle body; the ferrule is fixed on one end of the handle body, and the fiber core passes through the handle body and the ferrule in sequence; the direction ring is rotated along the circumference of the handle body to a predetermined position and then fixed; so as to determine the circumferential relative position of the multi-core optical fiber and the direction ring. The ferrule assembly, the connector and the assembly method of the ferrule assembly of the embodiment of the present application have the advantage of low cost.

Description

Technical Field

[0001] The present application relates to the field of optical communications, and in particular to a ferrule assembly, a connector, and an assembly method of the ferrule assembly. Background Art

[0002] Multi-core fiber (Multi Core Fiber) is an optical fiber with multiple cores in a common cladding area. Because it can improve the integration density per unit area of ​​the transmission line, it has the characteristics of multiple physical channels, low crosstalk between cores, and good attenuation consistency of each core. It is increasingly widely used in ultra-large capacity fiber-optic communication systems, new large-capacity multi-service access networks, distributed fiber-optic sensor systems, and medical equipment.

[0003] Unlike a single-core optical fiber whose core is in the center, a multi-core optical fiber has multiple cores that are circumferentially arranged around the center of the multi-core optical fiber. When two sections of multi-core optical fiber are connected, a fiber optic adapter is usually provided with a connector with a multi-core optical fiber at each end. The multi-core optical fiber of the connector is highly precisely rotated and aligned, that is, the cores of the array are set at predetermined array positions around the axial direction of the multi-core optical fiber, so that the cores of the two sections of multi-core optical fiber are aligned with each other, thereby achieving smooth flow of each channel. Therefore, the circumferential positioning of the multi-core optical fiber is crucial to the signal transmission of each channel of the multi-core optical fiber.

[0004] In the prior art, the circumferential positioning of a multi-core optical fiber and a connector is usually achieved by providing a positioning structure on the multi-core optical fiber itself and providing a fixing structure at a corresponding position of the connector. The cooperation of the two enables the multi-core optical fiber to be connected to the connector at a fixed circumferential angle. However, on the one hand, the diameter of the multi-core optical fiber is very small, making the implementation of the positioning structure difficult. On the other hand, the cost of customized optical fiber is higher than that of ordinary optical fiber. Summary of the invention

[0005] In view of this, the embodiments of the present application hope to provide a ferrule assembly, a connector and an assembly method of the ferrule assembly to solve the current problem of high circumferential positioning costs of multi-core optical fibers.

[0006] To achieve the above purpose, the technical solution of the embodiment of the present application is implemented as follows:

[0007] A core insertion assembly comprises a tail handle, a core insertion 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 tail handle comprises a handle body and a direction ring sleeved on the handle body; the core insertion is fixed on one end of the handle body, and the fiber core passes through the handle body and the core insertion in sequence; the direction ring is rotated along the circumference of the handle body to a predetermined position and then fixed; so as to determine the circumferential relative position of the multi-core optical fiber and the direction ring.

[0008] Furthermore, a second positioning portion is formed on one end of the handle body away from the ferrule; the multi-core optical fiber includes at least one second fixing portion adapted to the second positioning portion; and the second positioning portion is anti-rotationally matched with the second fixing portion.

[0009] Furthermore, the second positioning portion is a groove, and the second positioning portion extends from an end of the handle body away from the ferrule to an end of the handle body close to the ferrule; the second fixing portion is a protrusion arranged on the cladding and extending along the axial direction of the multi-core optical fiber.

[0010] Furthermore, the ferrule assembly includes a first positioning portion for circumferential fixing, and the first positioning portion is fixed on the direction ring.

[0011] Further, the first positioning portion is a positioning column, the direction ring is formed with a protrusion in the radial outward direction, the protrusion is formed with a mounting hole along the axial direction of the handle body, and the first positioning portion is inserted in the mounting hole.

[0012] A connector comprises a shell component and the above-mentioned plug core component; the shell component comprises a accommodating space which passes through from front to back, and the tail handle is fixed in the accommodating space.

[0013] Furthermore, the shell assembly includes an outer shell, a rear sleeve, a tail sleeve and an elastic member, the outer shell and the rear sleeve are nested to form the accommodating space that passes through from front to back, and the end of the insert away from the handle body protrudes from the accommodating space; the elastic member is arranged in the accommodating space, one end of the elastic member abuts against the rear sleeve, and the other end abuts against the tail handle; the tail sleeve is nested on the end of the rear sleeve away from the outer shell.

[0014] Furthermore, the handle body is a column, and the direction ring is sleeved on one end of the handle body close to the insert core; one end of the elastic member abuts against the rear sleeve, and the other end abuts against the end face of the direction ring.

[0015] Furthermore, the handle body is a stepped shaft, wherein the insert is fixed on the end of the handle body with a larger diameter, and the direction ring is sleeved on the end of the handle body with a larger diameter; one end of the elastic member abuts against the rear sleeve, and the other end abuts against the end face of the end of the handle body with a larger diameter.

[0016] Furthermore, the ferrule assembly includes a first positioning portion for circumferential fixing, and the first positioning portion is fixed on the direction ring; the first positioning portion is a positioning column, and a yielding portion for avoiding the first positioning portion is formed on the wall surface of the accommodating space.

[0017] An assembly method of the above-mentioned ferrule assembly includes: fixing the ferrule and the handle body; inserting the fiber core into the handle body and the ferrule in sequence; sleeve the direction ring on the handle body; controlling the handle body to rotate to a predetermined position relative to the direction ring; and fixing the handle body and the direction ring.

[0018] Furthermore, the step of controlling the handle body to rotate to a predetermined position relative to the direction ring includes:

[0019] Select a standard component and two groups of corresponding signal transceiver devices; the standard component includes standard fiber cores corresponding to the fiber cores one by one and standard interfaces corresponding to the ferrules, wherein one group of signal transceiver devices is connected to the standard fiber cores, and the other group of signal transceiver devices is connected to the fiber cores; keep the positions of the direction ring and the standard interface unchanged, and dock the standard interface with the ferrule; start the signal transceiver device; control the handle body to rotate relative to the direction ring until the signal transceiver device detects that at least two of the standard fiber cores are connected to the corresponding at least two fiber cores.

[0020] The ferrule assembly, connector and ferrule assembly assembly method of the embodiment of the present application are provided with a tail handle, a ferrule and a multi-core optical fiber, wherein the tail handle includes a handle body and a direction ring sleeved on the handle body. The direction ring and the handle body are manufactured separately, the process is simple, and the processing precision is high. Multiple fiber cores are sequentially passed through the handle body and the ferrule, and the direction ring is rotated circumferentially to a position where the relative angle with the fiber core is fixed, and finally the two are fixed, thereby making the circumferential relative positions of different multi-core optical fibers with the direction ring uniform, which not only avoids the high cost of using customized multi-core optical fibers, but also realizes the circumferential position fixation of the multi-core optical fiber in the ferrule assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of a ferrule assembly according to an embodiment of the present application;

[0022] Figure 2 This is an exploded schematic diagram of a ferrule assembly according to another embodiment of the present application;

[0023] Figure 3 This is an exploded schematic diagram of a ferrule assembly according to another embodiment of the present application;

[0024] Figure 4 This is a schematic diagram of the structure of a connector according to an embodiment of the present application;

[0025] Figure 5 for Figure 4 An exploded diagram of the connector;

[0026] Figure 6This is a schematic diagram of the assembly of the connector and the optical fiber adapter according to an embodiment of the present application, wherein the connector and the optical fiber adapter are separated;

[0027] Figure 7 It is a schematic diagram of the assembly of the connector and the optical fiber adapter of the embodiment of the present application, wherein the connector and the optical fiber adapter are plugged in;

[0028] Figure 8 for Figure 7 A schematic diagram of the structure of the optical fiber adapter;

[0029] Fig. 9 for Figure 8 AA view;

[0030] Fig.10 for Figure 6 A view in the direction of B, showing the relative position relationship between the multi-core optical fiber and the first positioning portion, wherein the shell assembly, the direction ring and the tail handle are omitted;

[0031] Fig.11 This is a structural schematic diagram of a ferrule assembly according to another embodiment of the present application;

[0032] Fig.12 for Fig.11 A partial enlarged view of D;

[0033] Fig.13 It is a schematic diagram of the structure of a multi-core optical fiber according to an embodiment of the present application; wherein part of the plastic outer layer, the cladding, and the second fixing portion are stripped off, and the fiber cores are simplified into a bundle;

[0034] Fig.14 for Fig.13 A partial enlarged view of E;

[0035] Fig.15 This is a flow chart of the assembly method of the ferrule assembly according to an embodiment of the present application. DETAILED DESCRIPTION

[0036] It should be noted that, in the absence of conflict, the embodiments and technical features in the embodiments of the present application can be combined with each other, and the detailed descriptions in the specific implementation methods should be understood as explanations of the present application and should not be regarded as improper limitations on the present application.

[0037] In the description of the embodiments of the present application, the directions or positional relationships of "up", "down", "left", "right", "front", and "rear" are based on the attached Figure 1 Regarding the orientation or positional relationship shown, it should be understood that these orientation terms are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0038] like Figures 1 to 15 As shown, a ferrule assembly includes a tail handle 21, a ferrule 22 and a multi-core optical fiber 9. The ferrule assembly 2 is used to cooperate with an optical fiber adapter 8 (mentioned below).

[0039] Among them, the multi-core optical fiber 9 includes a cladding 92 and at least two cores 91 arranged in the cladding 92. The core 91 can be a glass core. Usually, the cores 91 can be arranged in a four-core rectangular arrangement or a seven-core circular arrangement according to the number. Taking seven cores as an example, multiple cores 91 can be arranged in a polar array, including a central core 91a, and other cores 91b, 91c, 91d, etc. surrounding the central core in a satellite manner. The radial distances of other cores 91b, 91c, 91d to the central core 91a can usually be set to be equal for ease of design. In addition, the multi-core optical fiber 9 also includes a plastic sheath 93 wrapped outside the cladding 92 to provide protection.

[0040] The tail handle 21 includes a handle body 211 and a direction ring 212 sleeved on the handle body 211. The handle body 211 can be made of ceramic, plastic or metal; the direction ring 212 can be made of ceramic, plastic or metal. The ferrule 22 is fixed on one end of the handle body 211, and the fiber core 91 passes through the handle body 211 and the ferrule 22 in sequence.

[0041] The ferrule 22 is fixed on one end of the handle body 211; multiple fiber cores 91 are sequentially inserted into the handle body 211 and the ferrule 22. As a result, the circumferential positions of the handle body 211 and the ferrule 22 relative to the fiber core 91 are fixed. When the handle body 211 rotates around its own axis 21a, the circumferential positions of the ferrule 22 and the multiple fiber cores 91 relative to the axis 21a also change. It can be understood that the plastic sheath 93 of the multi-core optical fiber 9 is usually not inserted into the tail handle 21 and the ferrule 22, and the cladding 92 with the plastic sheath 93 stripped off is inserted into the tail handle 21 and the ferrule 22 together with the fiber core 91 until the fiber core 91 is flush with the end of the ferrule 22 away from the handle body 211.

[0042] The direction ring 212 is fixed after being rotated to a predetermined position along the circumference of the handle body 211; the fixing method can be gluing, welding, etc. Since the direction ring 212 and the handle body 211 are manufactured separately, the process is simple, the processing precision is high, and the positioning is accurate. The multiple cores 91 of the multi-core optical fiber 9 are inserted into the ferrule 22. By rotating the direction ring 212 circumferentially, the direction ring 212 is uniformly rotated to a position with a fixed relative angle with the core 91, and finally the two are fixed. The direction ring 212 and the handle body 211 are fixedly connected by gluing or welding; thereby, the circumferential relative positions of different multi-core optical fibers 9 and the direction ring 212 are unified, which not only avoids the high cost of using customized multi-core optical fibers, but also realizes the circumferential position fixation of the multi-core optical fiber 9 in the ferrule assembly 2.

[0043] A possible embodiment is as follows Figures 11 to 14 As shown, a second positioning portion 24 is formed on one end of the handle body 211 away from the insert core 22 .

[0044] The multi-core optical fiber 9 includes at least one second fixing portion 94 adapted to the second positioning portion 24 .

[0045] The second positioning portion 24 and the second fixing portion 94 are anti-rotatably matched to enable the cladding 92 to be circumferentially positioned in the handle body 211, and further enable the plurality of fiber cores 91 located in the cladding 92 to be circumferentially positioned in the handle body 211. That is, the fiber cores 91 of the multi-core optical fiber 9 can be inserted into the ferrule 22 at a uniform circumferential angle, saving corresponding procedures for subsequent assembly.

[0046] The second fixing portion 94 of the multi-core optical fiber 9 and the second positioning portion 24 cooperate to prevent rotation to achieve the circumferential position fixation of the multi-core optical fiber 9 and the ferrule assembly 2, and the direction ring 212 and the handle body 211 achieve the circumferential position fixation of the multi-core optical fiber 9 and the ferrule assembly 2, and the two have slightly overlapping functions. However, it should be understood that when the fiber core 91 and the handle body 211 have been circumferentially positioned once, the second round of circumferential positioning is performed through the direction ring 212, so that the adjustment time of the second round of circumferential positioning is shorter, because the first round has been preliminarily adjusted through the second fixing portion 94 and the second positioning portion 24, and at this time, the circumferential relative position of the multi-core optical fiber 9 in the ferrule assembly 2 is very small from the preset theoretical position, so the adjustment range of the second round is very small, which can greatly improve the efficiency of circumferential positioning through the direction ring 212.

[0047] Of course, since the first round only needs to perform preliminary circumferential positioning through the second fixing part 94 and the second positioning part 24, and no direct positioning in the background technology is required; therefore, the precision requirement for customization of the multi-core optical fiber 9 in the embodiment of the present application is not as high as in the background technology, thereby reducing the manufacturing cost of the multi-core optical fiber 9.

[0048] A possible embodiment is as follows Figures 11 to 14 As shown, the second positioning portion 24 is a groove, and the second positioning portion 24 extends from an end of the handle body 211 away from the ferrule 22 to an end of the handle body 211 close to the ferrule 22. The second fixing portion 94 is a protrusion provided on the cladding 92 and extending along the axial direction of the multi-core optical fiber 9.

[0049] Of course, the second positioning portion 24 can also be a protrusion, and the second fixing portion 94 can also be a groove matched therewith. The key grooves of the two cooperate to achieve the circumferential rotation stop.

[0050] The second fixing portion 94 may be integrally connected to the cladding 92 , that is, directly cast on the cladding 92 by a mold or other means, so that the connection strength is good.

[0051] A possible embodiment is as follows Figures 1 to 12 As shown, the ferrule assembly 2 includes a first positioning portion 23 for circumferential fixation, and the first positioning portion 23 is fixed on the direction ring 212. The first positioning portion 23 can be used in the optical fiber adapter to relatively fix the circumferential position of the multi-core optical fiber 9. The first positioning portion 23 can be integrally connected with the direction ring 212, so that the rigidity of the connection between the two is good; considering the cost, processing accuracy and material properties, the first positioning portion 23 can also be fixed with the direction ring 212 by welding, gluing, interference fit, etc.

[0052] Specifically, the optical fiber adapter 8 includes a body 81, a supporting portion 82, a sleeve 83 and a fixing portion 84. The sleeve 83 can be made of ceramic.

[0053] An axially penetrating channel 811 is formed in the body 81. The support portion 82 is supported in the channel 811 and divides the channel 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 fixed on the support portion 82 and communicates with the two sub-mounting holes 811a; the end of the insert 22 away from the handle body 211 can be inserted into the sleeve 83; the fixing portion 84 is arranged on the body 81 or the support portion 82.

[0054] The first positioning portion 23 can cooperate with the fixing portion 84 of the optical fiber adapter to prevent rotation, thereby limiting the circumferential movement of the first positioning portion 23, and further limiting the circumferential rotation of the tail handle 21 and the ferrule 22 in the optical fiber adapter 8, thereby making the circumferential position of the multi-core optical fiber 9 relatively fixed, thereby achieving the circumferential position fixation of the multi-core optical fiber and the tail handle of the connector, and the adapter in turn, reducing the process of multiple circumferential positioning through the outer shell in the middle, and achieving high circumferential positioning accuracy.

[0055] The multi-core optical fiber 9 is fixed in the circumferential position in the core assembly 2 through the direction ring 212, and then the multi-core optical fiber 9-first positioning part 23-fixing part 84 is realized to complete the circumferential positioning through the first positioning part 23 of the core assembly and the fixing part 84 of the optical fiber adapter 8. The two sections of multi-core optical fibers 9 are respectively connected in the optical fiber adapter 8 through the above circumferential positioning to ensure the successful signal transmission of different multi-core optical fibers 9.

[0056] Specifically, Fig.10As shown, taking the core 91d as an example, the line connecting the first positioning part 23 to the center of the multi-core optical fiber 9 forms an angle C with the line connecting the core 91d to the center of the multi-core optical fiber 9. If the direction ring 212 is not controlled to rotate along the circumference of the handle body 211 to a predetermined position, C can be any value. At this time, even if the first positioning part 23 and the fixing part 84 complete the circumferential positioning, the cores 91d of the two sections of the multi-core optical fiber 9 are obviously not necessarily aligned, the channel is disconnected, and the signal transmission cannot be completed. If the first positioning part 23 is driven by the direction ring 212 to rotate circumferentially along the adjustment path shown by the dotted line until it reaches the predetermined position, and then fixed, the circumferential relative position of the multi-core optical fiber 9 and the corresponding first positioning part 23 is ensured to be unified, thereby ensuring that the circumferential position of the multi-core optical fiber 9 and the ferrule assembly 2 is fixed.

[0057] In actual operation, there are many ways to determine the predetermined position. For example, the line angle C of the fiber core 91d can be directly measured. If it meets the preset value, it means that the direction ring 212 has reached the predetermined position. Otherwise, the first positioning part 23 is driven by the direction ring 212 to rotate circumferentially along the adjustment path shown by the dotted line and then repeat the detection. In addition, a standard connector can also be directly set, and the ferrule assembly 2 is connected to the standard connector in the form of coupling. One end of the standard connector sends a signal to the channel represented by each fiber core. If the corresponding signal is received on the fiber core 91 at one end of the ferrule assembly 2, it means that the direction ring 212 has reached the predetermined position. According to the number of fiber cores 91 in the multi-core optical fiber 9 and the arrangement of the fiber cores 91, the number of signal detections of the fiber cores 91 should be greater than or 2 groups.

[0058] like Fig.15 As shown, the assembly method of the ferrule assembly of this embodiment includes:

[0059] S10 , fixing the insert core 22 and the handle body 211 .

[0060] S20, insert the fiber core 91 into the handle body 211 and the ferrule 22 in sequence.

[0061] S30 , sleeve the direction ring 212 onto the handle body 211 .

[0062] S40 , the control handle body 211 rotates to a predetermined position relative to the direction ring 212 .

[0063] S50 , fixing the handle body 211 and the direction ring 212 .

[0064] Wherein, step S40 includes:

[0065] S41, select standard components and two corresponding signal transceiver devices. The standard components include standard fiber cores corresponding to the fiber cores 91 and standard interfaces corresponding to the ferrules 22, one group of signal transceiver devices is connected to the standard fiber cores, and the other group of signal transceiver devices is connected to the fiber cores 91. It can be understood that step S41 has no logical relationship with steps S10-S30, and can be advanced, delayed, or performed in parallel.

[0066] S42, keep the position of the direction ring 212 and the standard interface unchanged, and dock the standard interface with the ferrule 22. The relative position of the standard interface and the ferrule 22 along the axial direction remains unchanged, but the circumferential direction may change. The first positioning portion 23 may be used as a positioning mark to fix the position of the direction ring 212 and the standard interface unchanged. A fiber core 91 in the ferrule 22 and a standard fiber core in the standard interface are connected thereto to form a complete signal transmission channel.

[0067] S43, start the signal transceiver.

[0068] S44, control the handle body 211 to rotate relative to the direction ring 212 until the signal transceiver detects that at least two standard fiber cores are connected to the corresponding at least two fiber cores 91. The predetermined position is the position of the handle body 211 and the direction ring 212 when the signal is connected.

[0069] A possible embodiment is as follows Figures 1 to 9 As shown, the first positioning portion 23 can be one of the positioning column and the positioning hole; the fixing portion 84 is the other of the positioning column and the positioning hole, and the two are plugged into each other. Of course, other matching methods such as card slot clamping can also be used, as long as the handle body 211 and the ferrule 22 can be prevented from circumferentially rotating in the optical fiber adapter 8.

[0070] The first positioning portion 23 and the fixing portion 84 can be made of ceramic, plastic or metal according to factors such as material properties and processing methods. When the first positioning portion 23 is a positioning column, a cone section is provided at one end of the first positioning portion 23 away from the tail handle 21; when the first positioning portion 23 is a positioning hole, a bell mouth is provided at the entrance end of the first positioning portion 23.

[0071] A possible embodiment is as follows Figures 1 to 9 As shown, the outer side of the shell 712 includes an elastic clamping plate 7121 , and the body 81 is formed with an axial limiting hole (not marked) that cooperates with the elastic clamping plate 7121 to limit the axial displacement of the shell 712 and the body 81 .

[0072] A possible embodiment is as follows Figures 1 to 5As shown, the direction ring 212 is formed with a protrusion 2121 along the radial outward protrusion, and the protrusion 2121 is formed with an axial mounting hole 2122 along the handle body 211. The first positioning portion 23 is a positioning column. The first positioning portion 23 is inserted into the mounting hole 2122 to facilitate the processing of the first positioning portion 23 and ensure that it has a high dimensional accuracy, so as to facilitate the hole-axis matching of the fixing portion 84 of the optical fiber adapter 8.

[0073] Here, a connector is provided for mating with the optical fiber adapter 8. Figures 1 to 9 As shown, the connector includes a shell assembly 71 and the above-mentioned ferrule assembly 2; the shell assembly 71 includes a front-to-back through-accommodation space 711, the tail handle 21 is fixed in the accommodation space 711, and the shell assembly 71 can be plugged into the sub-mounting hole 811a of the optical fiber adapter 8 to achieve the docking of two sections of multi-core optical fibers. The circumference of the accommodation space 711 can be closed to achieve the sealing of the multi-core optical fibers during the contact process to prevent dust.

[0074] A possible embodiment is as follows Figure 4 and Figure 5 As shown, the shell assembly 71 includes an outer shell 712, a rear sleeve 713, a tail sleeve 714 and an elastic member 715. The outer shell 712 can be a shell with a through hole, and the rear sleeve 713 can be a column with a through hole. The two are fixed by snapping, and the outer shell 712 and the rear sleeve 713 are nested to form a front-to-back through-accommodation space 711, which is convenient for accommodating the ferrule assembly 2.

[0075] It is understandable that the structural design is diverse, so not all components in the ferrule assembly 2 are necessarily in the accommodating space 711 . They only need to be fixed in the accommodating space 711 by setting the tail handle 21 , and the remaining components can be directly or indirectly fixed to the tail handle 21 .

[0076] The end of the ferrule 22 away from the handle body 211 protrudes from the accommodating space 711, and the ferrule 22 protrudes from the end of the housing 712 away from the rear cover 713, so that the end of the ferrule 22 away from the handle body 211 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 to achieve docking, and the sleeve 83 provides functions such as sealing, protection and guidance.

[0077] The elastic member 715 may be a spring. The elastic member 715 is disposed in the accommodation space 711, with one end of the elastic member 715 abutting against the rear sleeve 713, and the other end abutting against the handle body 211; the tail sleeve 714 is nested on the end of the rear sleeve 713 away from the housing 712. The elastic member 715 provides a force to the ferrule 22 through the handle body 211. When the ferrules 22 of the ferrule assemblies 2 of the two connectors 7 are respectively inserted from both sides of the sleeve 83, the elastic member 715 can change its volume so that the two will not be in hard contact, and the two ferrules 22 can be closely butted together by the force of the elastic member 715.

[0078] A possible embodiment is as follows Figure 4 and Figure 5 As shown, when the first positioning portion 23 is a positioning column, a clearance portion 716 for avoiding the first positioning portion 23 is formed on the wall surface of the accommodating space 711. Specifically, the clearance portion 716 can be formed by a concave shape of the outer shell 712, or by a perforation of the rear cover 713, as long as it can prevent interference with the first positioning portion 23.

[0079] A possible embodiment is as follows Figure 1 and Figure 2 As shown, the handle body 211 is a column, and the direction ring 212 is sleeved on one end of the handle body 211 close to the insert 22 to facilitate the processing of the handle body 211; one end of the elastic member 715 abuts against the rear sleeve 713, and the other end abuts against the end surface of the direction ring 212, thereby providing elastic force.

[0080] A possible embodiment is as follows Figure 1 and Figure 2 As shown, the handle body 211 is a stepped shaft, wherein the insert 22 is fixed on the end of the handle body 211 with a larger diameter, and the direction ring 212 is sleeved on the end of the handle body 211 with a larger diameter; one end of the elastic member 715 abuts against the rear sleeve 713, and the other end abuts against the end face of the end of the handle body 211 with a larger diameter.

[0081] The various embodiments / implementations provided in this application can be combined with each other without causing any contradiction.

[0082] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A ferrule assembly, characterized in that: It comprises a tail handle (21), a core insert (22) and a multi-core optical fiber (9); The multi-core optical fiber (9) comprises a cladding (92) and at least two fiber cores (91) arranged in the cladding (92); The tail handle (21) comprises a handle body (211) and a direction ring (212) sleeved on the handle body (211); The ferrule (22) is fixedly mounted on one end of the handle body (211), and the fiber core (91) passes through the handle body (211) and the ferrule (22) in sequence; The direction ring (212) is rotated along the circumference of the handle body (211) to a predetermined position and then fixed; so as to determine the circumferential relative position of the multi-core optical fiber (9) and the direction ring (212); The insert assembly (2) comprises a first positioning portion (23) for circumferential fixing, wherein the first positioning portion (23) is fixed on the direction ring (212); the first positioning portion (23) is a positioning column, and the direction ring (212) is formed with a protrusion (2121) protruding radially outward, and the protrusion (2121) is formed with an axial mounting hole (2122) along the handle body (211), and the first positioning portion (23) is inserted into the mounting hole (2122).

2. The ferrule assembly according to claim 1, characterized in that: A second positioning portion (24) is formed on one end of the handle body (211) away from the insert core (22); The multi-core optical fiber (9) comprises at least one second fixing portion (94) adapted to the second positioning portion (24); The second positioning portion (24) and the second fixing portion (94) are engaged to prevent rotation.

3. The ferrule assembly according to claim 2, characterized in that: The second positioning portion (24) is a groove, and the second positioning portion (24) extends from an end of the handle body (211) away from the insert core (22) to an end of the handle body (211) close to the insert core (22); The second fixing portion (94) is a protrusion arranged on the cladding (92) and extending along the axial direction of the multi-core optical fiber (9).

4. A connector, characterized in that: The connector comprises a shell assembly (71) and a core assembly (2) according to any one of claims 1 to 3; the shell assembly (71) comprises a accommodating space (711) that passes through from front to back, and the tail handle (21) is fixedly arranged in the accommodating space (711).

5. The connector according to claim 4, characterized in that: The shell assembly (71) comprises an outer shell (712), a rear sleeve (713), a tail sleeve (714) and an elastic member (715); the outer shell (712) and the rear sleeve (713) are nested to form a front-to-back through-containment space (711); and one end of the insert (22) away from the handle body (211) protrudes from the containment space (711); The elastic member (715) is arranged in the accommodating space (711), one end of the elastic member (715) abuts against the rear sleeve (713), and the other end abuts against the tail handle (21); the tail sleeve (714) is nested on an end of the rear sleeve (713) away from the outer shell (712).

6. The connector according to claim 5, characterized in that: The handle body (211) is a column, and the direction ring (212) is sleeved on one end of the handle body (211) close to the insert (22); one end of the elastic member (715) abuts against the rear sleeve (713), and the other end abuts against the end surface of the direction ring (212).

7. The connector according to claim 5, characterized in that: The handle body (211) is a stepped shaft, wherein the insert (22) is fixedly mounted on the end of the handle body (211) with a larger diameter, and the direction ring (212) is sleeved on the end of the handle body (211) with a larger diameter; one end of the elastic member (715) abuts against the rear sleeve (713), and the other end abuts against the end surface of the end of the handle body (211) with a larger diameter.

8. The connector according to claim 5, characterized in that: The insert assembly (2) comprises a first positioning portion (23) for circumferential fixation, wherein the first positioning portion (23) is fixed on the direction ring (212); the first positioning portion (23) is a positioning column, and a yielding portion (716) for avoiding the first positioning portion (23) is formed on the wall surface of the accommodating space (711).

9. An assembly method of the ferrule assembly according to claim 1, characterized in that: include: Fixing the insert core (22) and the handle body (211); The fiber core (91) is sequentially inserted into the handle body (211) and the insert core (22); The direction ring (212) is sleeved on the handle body (211); Controlling the handle body (211) to rotate to a predetermined position relative to the direction ring (212); The handle body (211) and the direction ring (212) are fixed.

10. The assembly method according to claim 9, characterized in that: The step of controlling the handle body (211) to rotate relative to the direction ring (212) to a predetermined position comprises: A standard component and two corresponding signal transceiver devices are selected; the standard component includes a standard fiber core corresponding to the fiber core (91) one by one and a standard interface corresponding to the ferrule (22), wherein one group of signal transceiver devices is connected to the standard fiber core, and the other group of signal transceiver devices is connected to the fiber core (91); Keeping the positions of the direction ring (212) and the standard interface unchanged, docking the standard interface with the insert (22); Start the signal transceiver; The handle body (211) is controlled to rotate relative to the direction ring (212) until a signal transceiver device detects that at least two of the standard fiber cores are connected to the corresponding at least two of the fiber cores (91).

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