Multi-core optical fiber connector

Abstract

The utility model relates to a multi-core optical fiber connector, which comprises an outer shell, a first connecting piece and a second connecting piece, and is characterized in that the first connecting piece and the second connecting piece at least partially sleeve the outer side of the outer shell; a cavity penetrating through the two ends of the outer shell is formed in the outer shell, and the optical fiber cable and the insertion core penetrate through the cavity; a first connecting part and a limiting platform are arranged on the outer side of the outer shell; a connecting part is arranged on the inner side wall of the first connecting piece, and the connecting part is matched with the first connecting part so that the first connecting piece and the outer shell can be connected in a fastened mode. A limiting platform is arranged on the outer shell, a limiting table is arranged on the inner side wall of the second connecting piece, the limiting table and the limiting platform are matched to limit axial movement of the second connecting piece on the outer shell, and when one end of the second connecting piece is connected with other connecting assemblies in a fastened mode, the second connecting piece is connected with the outer shell in a fastened mode. According to the multi-core optical fiber connector, the processing efficiency of the optical fiber connector can be improved, the processing precision of the optical fiber connector is ensured, and the optical fiber connection precision of the optical fiber connector is further ensured.

Description

Technical Field

[0001] The present application relates to the technical field of physical connection of optical fiber communication, and in particular to a multi-core optical fiber connector. Background Art

[0002] Fiber optic connectors are optical communication devices used to connect two groups of optical fibers so that optical signals can be continuous and thus establish a fiber optic path. When producing fiber optic connectors, it is necessary to insert the optical fiber cable into the fiber optic connector to accurately connect with the ferrule at the head of the fiber optic connector, and then dock the fiber optic connector connected with the optical fiber cable with the external fiber optic connection equipment (such as a fiber optic box, etc.) to achieve connectivity between the optical fibers.

[0003] In the process of processing outdoor optical fiber connectors, since the outer shell of existing small optical fiber connectors is mostly an integrated design, and the inner diameter of existing small optical fiber connectors is smaller than the diameter of optical fiber cables, it is not easy for optical fiber cables to penetrate into the interior of optical fiber connectors. In addition, the assembly process of optical fiber connectors places high demands on operators, and the installation process is cumbersome. Improper installation will reduce the optical connection accuracy of the entire optical fiber connector and cause optical signal loss. In addition, the iterative development of optical fiber connectors also puts forward higher requirements on their compatibility. Optical fiber connectors also need to be upwardly compatible and adapt to the previous generation of optical fiber adapters or optical fiber boxes to avoid increasing costs and causing waste of resources.

[0004] Therefore, how to improve the assembly efficiency of multi-core optical fiber connectors and ensure the optical fiber connection accuracy of optical fiber connectors has become a technical problem that needs to be solved urgently.

[0005] In addition, how to ensure that fiber optic connectors are upwardly compatible and adaptable to the previous generation of fiber optic adapters or fiber optic boxes has become a technical problem that needs to be solved urgently. Utility Model Content

[0006] The present application provides a multi-core optical fiber connector to improve the assembly efficiency of the multi-core optical fiber connector while ensuring the optical fiber connection accuracy of the multi-core optical fiber connector.

[0007] In a first aspect, the present application provides a multi-core optical fiber connector, comprising an outer shell, a first connecting member and a second connecting member, wherein the first connecting member and the second connecting member are at least partially sheathed on the outer side of the outer shell;

[0008] The outer shell has a cavity running through both ends of the outer shell for the optical fiber cable and the ferrule to pass through; the outer side of the outer shell is provided with a first connecting portion and a limiting platform;

[0009] A second connecting portion is provided on the inner side wall of the first connecting member, and the second connecting portion cooperates with the first connecting portion to fasten the first connecting member to the outer shell;

[0010] A limiting platform is arranged on the inner side wall of the second connecting member, and the limiting platform cooperates with the limiting platform to limit the axial movement of the second connecting member on the outer shell.

[0011] In a possible implementation, the first connection portion includes a connection channel and an anti-slip protrusion, the connection channel is circumferentially arranged along the outer wall of the outer shell, the anti-slip protrusion is arranged in the connection channel, and the anti-slip protrusion is axially arranged along the outer shell.

[0012] In a possible implementation, the first connection portion is a connection groove, the number of the first connection portion is at least one, and the second connection portion is a connection protrusion.

[0013] In a possible implementation, a guide groove is axially arranged on the outer side of the outer shell, and an opening of the guide groove is communicated with an end surface of the outer shell.

[0014] In a possible implementation, the number of the first connection parts is at least two, and the at least two first connection parts are intermittently arranged along the circumferential direction on the outer side of the outer shell;

[0015] A protruding structure is also provided on the inner side wall of the second connecting member, and the protruding structure is cooperatively connected with the discontinuous area between at least two first connecting parts.

[0016] In a possible implementation, it also includes: an inner shell, an outer shell is covered on the outer side of the inner shell, the inner shell includes a second inner shell and a first inner shell connected in sequence, the optical fiber cable passes through the inside of the first inner shell and the second inner shell and docks with the ferrule, wherein: a second clamping portion is provided on the first inner shell, and a mating portion that is matingly connected to the second clamping portion is provided on the second inner shell to fasten the first inner shell and the second inner shell together; a guide portion is provided on the second inner shell, and the outer shell is matingly connected to the inner shell through the guide portion.

[0017] In a possible implementation, the inner housing further includes a third inner housing, wherein:

[0018] The third inner shell is sleeved on one end of the first inner shell connecting the plug core, and a connecting structure is arranged on the third inner shell, and a matching structure matching with the connecting structure is arranged on the first inner shell.

[0019] In a possible implementation, the second clamping portion is a protrusion disposed on the circumferential side of the first inner shell, and the matching portion is a through hole communicating with the internal cavity of the second inner shell.

[0020] In a possible implementation, the guide portion includes two guide side walls, both of which are arranged along the axial direction of the second inner shell, the two guide side walls form a guide channel, and one end of the guide channel is connected to an end surface of the second inner shell.

[0021] In a possible implementation, the second clamping portion includes a buffer structure and a clamping structure connected to the buffer structure, wherein:

[0022] The buffer structure has a connection slope along the connection direction between the second inner shell and the first inner shell, and the clamping structure is a protrusion.

[0023] The above technical solution provided by the embodiment of the present application has the following advantages compared with the prior art:

[0024] The multi-core optical fiber connector proposed in the present application includes an outer shell, a first connector and a second connector, wherein the first connector and the second connector are at least partially covered on the outer side of the outer shell, and the optical fiber cable and the ferrule pass through the cavity of the outer shell. A first connecting portion and a limiting platform are provided on the outer side of the outer shell, a connecting portion cooperating with the first connecting portion is provided on the inner side wall of the first connector, and a limiting platform cooperating with the limiting platform is provided on the second connector. When one end of the second connector is tightly connected to the other connecting components, the limiting platform abuts against the limiting platform, so that the second connector abuts tightly against the outer shell. This connection structure can simplify the installation steps of the multi-core optical fiber connector, facilitate operators to assemble and install the optical fiber connector, and ensure the accuracy of optical fiber connection.

[0025] In addition, the multi-core optical fiber connector also includes an inner shell, which includes a first inner shell and a second inner shell that are detachably connected. This segmented outer shell structure not only facilitates the passage of the optical fiber cable through the cavity inside the outer shell, but also facilitates the processing of the optical fiber connector, improves the processing efficiency of the optical fiber connector, and also ensures the processing accuracy of the optical fiber connector, thereby ensuring the optical fiber connection accuracy of the optical fiber connector, and facilitates the connection between the outer shells through the snap-fit ​​method, which also reduces the difficulty of operation for operators. Moreover, this split optical fiber connector structure can also adapt to optical fiber cables of various sizes, improving the adaptability of the optical fiber connector. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0027] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0028] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0029] Figure 1 A schematic diagram of the exploded structure of a multi-core optical fiber connector provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the structure of the outer shell of the multi-core optical fiber connector provided in an embodiment of the present application;

[0031] Figure 3 A schematic structural diagram of a first connecting member in a multi-core optical fiber connector provided in an embodiment of the present application;

[0032] Figure 4 A schematic structural diagram of a second connecting member in a multi-core optical fiber connector provided in an embodiment of the present application;

[0033] Figure 5 A schematic diagram of the structure of an inner housing in a multi-core optical fiber connector provided in an embodiment of the present application;

[0034] Figure 6 A schematic structural diagram of a first inner shell of a multi-core optical fiber connector provided in an embodiment of the present application;

[0035] Figure 7 A schematic structural diagram of the second inner shell of the multi-core optical fiber connector provided in an embodiment of the present application. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0037] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0038] For ease of description, spatial relative terms may be used herein to describe the relative positional relationship or movement of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", "front", "back", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure undergoes a position flip or a posture change or a motion state change, then these directional indications also change accordingly, for example: an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented as "above other elements or features" or "above other elements or features". Therefore, the example term "below..." may include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions) and the spatial relative descriptors used herein are interpreted accordingly.

[0039] In order to solve the technical problems in the prior art of low processing efficiency of integrated optical fiber connectors, low processing accuracy of the core, and easy damage, resulting in reduced optical fiber connection accuracy, the present application provides a fiber optic connector that can improve the processing efficiency of outdoor optical fiber connectors while ensuring the optical fiber connection accuracy of the optical fiber connector.

[0040] See also Figure 1 , Figure 1 This is a schematic diagram of the exploded structure of a multi-core optical fiber connector provided in an embodiment of the present application. Figure 1 As shown in , the present application provides a multi-core optical fiber connector, which can be installed in conjunction with an external optical fiber connection device to achieve optical fiber conduction.

[0041] like Figure 1 As shown in , the multi-core optical fiber connector includes an outer shell 100, a first connector 200 and a second connector 300, wherein the first connector 200 and the second connector 300 are at least partially covered on the outside of the outer shell 100. In the specific implementation process, the second connector 300 can be installed at the construction site, and the construction personnel can determine whether it needs to be installed according to the type of the external device connection port. For example, if the external device port is the first generation, the second connector 300 needs to be installed on site and connected to the outer shell 100, so that compatibility with the previous generation is achieved. At the same time, the second connector 300 can be fastened and connected to other external connection components to achieve the conduction of the optical fiber.

[0042] See also Figure 2 , Figure 2 This is a schematic diagram of the structure of the outer shell of the multi-core optical fiber connector provided in the embodiment of the present application. Figure 2As shown in , the outer shell 100 is provided with a cavity penetrating through both ends of the outer shell 100 for the optical fiber cable and the ferrule 400 to pass through. In the specific implementation process, the outer shell 100 has a first end 140 and a second end 150, the cavity is arranged along the axial direction of the outer shell 100, and the ferrule 400 is arranged at the second end 150 of the outer shell 100. After the optical fiber cable passes through the first end 140 of the outer shell 100, it is precisely docked with the ferrule 400. Among them, the ferrule 400 can be a multi-core MPO ferrule, a single-core SC ferrule, or a dual-core LC ferrule.

[0043] The outer side of the outer shell 100 is also provided with a first connecting portion 110 and a limiting platform 120. In the specific implementation process, the limiting platform 120 is arranged along the outer circumference of the outer shell 100, and the limiting platform 120 can be a continuous platform arranged outside the outer shell 100, or a discontinuous platform.

[0044] See also Figure 3 , Figure 3 This is a schematic diagram of the structure of the first connecting member in the multi-core optical fiber connector provided in the embodiment of the present application. Figure 3 As shown in , a second connecting portion 210 is disposed on the inner side wall of the first connecting member 200 , and the second connecting portion 210 cooperates with the first connecting portion 110 to fasten the first connecting member 200 to the outer shell 100 .

[0045] In one embodiment, if Figure 1 and Figure 2 As shown in the figure, the first connecting portion 110 includes a connecting channel 111 and an anti-slip protrusion 112. The connecting channel 111 is circumferentially arranged along the outer wall of the outer shell 100, the anti-slip protrusion 112 is arranged in the connecting channel 111, and the anti-slip protrusion 111 is axially arranged along the outer shell 100.

[0046] In the specific implementation process, the connection channel 111 is formed by two protruding structures 113 protruding from the outer peripheral side of the outer shell 100. The connection channel 111 is circumferentially arranged along the outer wall of the outer shell 100 and has an opening. The anti-slip protrusion 112 is arranged in the connection channel 111 along the axial direction of the outer shell 100 and has a preset distance from the end of the first connection part 110, so as to form a clamping space in the first connection part 110. When the second connection part 210 slides into the first connection part 110, it enters the clamping space, and the anti-slip protrusion 111 limits the second connection part 210 to clamp and fix the second connection part 210 in the first connection part 110 to prevent the second connection part 210 from accidentally falling out of the outer shell 100, thereby realizing the fastening connection between the first connection member 200 and the outer shell 100. Specifically, the anti-slip protrusion 111 can be a protrusion arranged in the first connection part 110, and its shape can be a long strip or other shapes, and can be continuous or discontinuous.

[0047] In one embodiment, the first connection portion 110 is a connection groove, and the second connection portion 210 is a connection protrusion. Of course, it can be understood that the first connection portion 110 can also be a connection protrusion, and the second connection portion 210 is a groove. In the specific implementation process, the number of the first connection portion 110 is at least one. When the number of the first connection portions 110 is two or more, the two or more first connection portions 110 are discontinuously arranged along the outer circumference of the outer shell 100. The second connection portion 210 slides into the first connection portion 110 and is clamped and fixed in the first connection portion 110, thereby realizing a fastened connection between the first connection member 200 and the outer shell 100.

[0048] In other embodiments, the first connection portion 110 may also be a connection thread. When the first connection portion 110 is a connection thread, the second connection portion 210 is also a thread.

[0049] See also Figure 4 , Figure 4 This is a schematic diagram of the structure of the second connecting member in the multi-core optical fiber connector provided in the embodiment of the present application. Figure 4 As shown in the figure, a limiting platform 310 is provided on the inner side wall of the second connecting member 300, and the limiting platform 310 cooperates with the limiting platform 120 to limit the axial movement of the second connecting member 300 on the outer shell 100. When one end of the second connecting member 300 is fastened to the other connecting components, the second connecting member 300 is tightly abutted against the outer shell 100.

[0050] During the specific implementation process, the second connecting member 300 is covered on the outer side of the outer shell 100. When the second connecting member 300 is tightly connected with other connecting components, the limit platform 310 in the second connecting member 300 abuts against the limit platform 120, thereby limiting the axial movement of the second connecting member 300 on the outer shell 100, achieving tight abutment between the second connecting member 300 and the outer shell 100, and preventing the second connecting member 300 from sliding or rotating on the outer shell 100.

[0051] In the specific implementation process, the second connector 300 can be connected to other connecting components by threads, for example, one end of the second connector 300 close to other connecting components can be provided with internal threads 320. Of course, it is understandable that one end of the second connector 300 close to other connecting components can also be provided with external threads.

[0052] In one embodiment, the number of the first connection parts 110 is at least two, and the at least two first connection parts 110 are intermittently arranged along the circumferential direction on the outer side of the outer shell 100. That is, there is a certain intermittent area between the at least two first connection parts 110.

[0053] like Figure 4As shown in , a protruding structure 330 is further provided on the inner side wall of the second connector 300, and the protruding structure 330 is matched with the discontinuous area between at least two first connectors 110. That is to say, when the second connector 300 is sheathed on the outer shell 100, the protruding structure 330 is matched with the discontinuous area between at least two first connectors 110, and the other parts of the inner side wall of the second connector 300 except the protruding structure 330 are matched with the first connector 110, so that the second connector 300 can be smoothly sheathed on the outer shell 100. This method can realize the matching between the second connector 300 and the outer shell 100 without increasing the outer diameter of the second connector 300, so that the size of the optical fiber connector is smaller. Furthermore, the inner diameter of the circle formed by the protruding structure 330 is also smaller, so that the second connecting member 300 and the outer shell 100 fit more closely. When the second connecting member 300 is connected to other external devices, the second connecting member 300 will not swing on the outer shell 100, thereby making the optical fiber connection more secure and further improving the connection accuracy of the optical fiber connection.

[0054] In one embodiment, if Figure 3 and Figure 4 As shown in , the number of the second connection parts 210 and the limiting platform 310 is at least two. Preferably, at least two second connection parts 210 are evenly distributed on the first connection member 200, and at least two limiting platforms 310 are evenly distributed on the second connection member 300.

[0055] In a specific implementation process, the number of the second connection parts 210 is at least two. When the number of the second connection parts 210 is two, the two second connection parts 210 are symmetrically arranged on the inner side wall of the first connection member 200. When the number of the second connection parts 210 is more than two, the plurality of second connection parts 210 are evenly distributed on the inner side wall of the first connection member 200. Preferably, the number of the second connection parts 210 is two.

[0056] The number of the limiting platforms 310 is at least two. When the number of the limiting platforms 310 is two, the two limiting platforms 310 are symmetrically arranged on the inner side wall of the second connecting member 300. When the number of the limiting platforms 310 is more than two, the plurality of limiting platforms 310 are evenly distributed on the inner side wall of the second connecting member 300. Preferably, the number of the limiting platforms 310 is two.

[0057] It can be understood that, preferably, the number of the second connection parts 210 and the limiting platforms 310 are equal and matched one by one.

[0058] In one embodiment, if Figure 2As shown in , a guide groove 130 is axially arranged on the outer side of the outer shell 100, and the opening of the guide groove 130 is communicated with an end surface of one end of the outer shell 100. In a specific implementation process, the opening of the guide groove 130 is communicated with the end surface of the second end 150 of the outer shell 100. When the multi-core optical fiber connector is connected to an external optical fiber connection device or other connection components, the guide groove 130 is used to indicate the correct connection direction.

[0059] During the installation process, the first connecting member 200 is at least partially covered on the outer shell 100, and the axial movement and circumferential rotation between the first connecting member 200 and the outer shell 100 are limited by the cooperation between the second connecting portion 210 and the first connecting portion 110, that is, the axial movement and circumferential rotation of the outer shell 100 are limited; the second connecting member 300 is covered on the outer shell 100, and the axial movement between the second connecting member 300 and the outer shell 100 is limited by the cooperation between the limit platform 310 and the limit platform 120. At the same time, the first connecting member 200 blocks the movement path of the second connecting member 300 in the axial direction, so that the second connecting member 300 can only move on the outer shell 100 and will not fall off the outer shell 100.

[0060] See also Figure 5 , Figure 5 This is a schematic diagram of the structure of the inner housing of the multi-core optical fiber connector provided in the embodiment of the present application. Figure 1 and Figure 5 As shown in , the multi-core optical fiber connector also includes an inner housing 500, and the outer housing 100 is sheathed on the outer side of the inner housing 500. The inner housing 500 includes a second inner housing 520 and a first inner housing 510 connected in sequence, and the optical fiber cable passes through the inside of the first inner housing 510 and the second inner housing 520 and docks with the ferrule 400. In the specific implementation process, the first inner housing 510 and the second inner housing 520 are provided with a cavity, and the optical fiber cable passes through the cavity and docks with the ferrule 400. After the optical fiber cable is docked with the ferrule 400 inside, the multi-core optical fiber connector is docked with other connection components to realize the conduction of the optical fiber line.

[0061] See also Figure 6 and Figure 7 , Figure 6 This is a schematic structural diagram of a first inner housing of a multi-core optical fiber connector provided in an embodiment of the present application. Figure 7 A schematic structural diagram of the second inner shell of the multi-core optical fiber connector provided in an embodiment of the present application.

[0062] like Figure 5As shown in , the first inner shell 510 is provided with a second clamping portion 511, and the second inner shell 520 is provided with a matching portion 521 that is matched and connected with the second clamping portion 511, so as to fasten the first inner shell 510 and the second inner shell 520. In the specific implementation process, the second inner shell 520 is covered on one end of the first inner shell 510, and the other end of the first inner shell 510 is fastened and connected with the ferrule 400. In the specific implementation process, the first inner shell 510 and the second inner shell 520 can be connected by clamping or by threading.

[0063] In one embodiment, if Figure 5 As shown in , the second clamping portion 511 is a protrusion arranged on the circumferential side of the first inner shell 510, and the matching portion 521 is a through hole communicating with the internal cavity of the second inner shell 520. In the specific implementation process, the second clamping portion 511 and the matching portion 521 are clamped to achieve a fastening connection between the second inner shell 520 and the first inner shell 510. In other words, the first inner shell 510 and the second inner shell 520 are mainly detachably connected through the second clamping portion 511 and the matching portion 521. When the second clamping portion 511 and the matching portion 521 are clamped, the first inner shell 510 and the second inner shell 520 are fastened.

[0064] It is understandable that the second clamping portion 511 is disposed on the outer circumference of the first inner shell 510, and may be, for example, a protrusion or a groove. It is understandable that when the second clamping portion 511 is a protrusion, the matching portion 521 is a groove; when the second clamping portion 511 is a groove, the matching portion 521 is a protrusion.

[0065] In one embodiment, if Figure 6 As shown in , the second clamping portion 511 includes a buffer structure 5111 and a clamping structure 5112 connected to the buffer structure 5111, wherein: the buffer structure 5111 has a connection slope along the connection direction between the second inner shell 520 and the first inner shell 510, and the clamping structure 5112 is a protrusion. In the specific implementation process, the buffer structure 5111 can have a certain slope along the connection direction between the first inner shell 510 and the second inner shell 520 to facilitate the disassembly and installation between the first inner shell 510 and the second inner shell 520. The specific slope direction can be referred to Figure 6 The example given in .

[0066] It can be understood that there is no limitation on the number of the second clamping parts 511 and the matching parts 521. For example, the number of the second clamping parts 511 and the matching parts 521 can be two each. The two second clamping parts 511 are arranged on two opposite sides of the first inner shell 510 in the circumferential direction, and the two matching parts 521 are also arranged on two opposite sides of the second inner shell 520 in the circumferential direction so as to be respectively clamped with each second clamping part 511.

[0067] In one embodiment, glue holes can be set on the edges of the second clamping portion 511 and / or the matching portion 521. After the first inner shell 510 and the second inner shell 520 are matched and installed, fastening glue can be poured into the glue holes according to actual needs to achieve a fastening connection between the first inner shell 510 and the second inner shell 520.

[0068] In one embodiment, if Figure 5 As shown in , a connecting opening 523 is further provided on the second inner shell 520 , wherein one end of the connecting opening 523 is communicated with an end surface of one end of the second inner shell 520 .

[0069] In the specific implementation process, Figure 5 As shown in the figure, a first platform 512 is also axially provided on the outer side of the first inner shell 510. When the second inner shell 520 covers the first inner shell 510, the connecting opening 523 is plugged into the first platform 512, so that the second inner shell 520 can be correctly covered on the first inner shell 510, and the circumferential rotation between the first inner shell 510 and the second inner shell 520 can be prevented.

[0070] like Figure 7 As shown in , the second inner shell 520 is provided with a guide portion 522, and the outer shell 100 is connected with the inner shell 500 through the guide portion 522. In the specific implementation process, as shown in FIG. Figure 2 As shown in the figure, a guide portion 160 is also provided on the inner side wall of the outer shell 100, and the guide portion 160 is arranged along the axial direction of the outer shell 100. The guide portion 522 is used to guide the connection direction between the inner shell 500 and the outer shell 100, and cooperates with the guide portion 160 on the outer shell 100 to limit the circumferential rotation between the inner shell 500 and the outer shell 100.

[0071] like Figure 7 As shown in , the guide portion 522 includes two guide side walls 5221, both of which are arranged along the axial direction of the second inner shell 520, and the two guide side walls 5221 form a guide channel 5222, and one end of the guide channel 5222 is connected to an end surface of the second inner shell 520. In the specific implementation process, the guide side wall 5221 can be the side wall of the second inner shell 520, and a guide channel 5222 is formed between the two guide side walls 5221, and the guide channel 5222 is connected to an end surface of the second inner shell 520 close to the first inner shell 510, and the guide channel 5222 cooperates with the guide portion 160 on the outer shell 100 to limit the circumferential rotation between the outer shell 100 and the inner shell 500, and guides the guide portion 160 on the outer shell 100 to slide into the guide channel 5222 through the communicating opening of the guide channel 5222, so as to realize the connection between the outer shell 100 and the inner shell 500.

[0072] like Figure 2 As shown in , the guide portion 160 of the outer shell 100 is a raised long strip platform, and the shape of the guide channel 5222 is adapted to the shape of the guide portion 160 .

[0073] In one embodiment, if Figure 5 As shown in , a second platform 512 is axially arranged on the first inner housing 510 , one end of the second platform 512 extends to the end surface of the first inner housing 510 close to the ferrule 400 , and the height of the second platform 512 is lower than the height of the guide side wall 5221 .

[0074] In one embodiment, if Figure 5 As shown in the figure, the multi-core optical fiber connector also includes a third outer shell 530, wherein: the third outer shell 530 is covered on one end of the first inner shell 510 connected to the core 400, and a connecting structure 531 is provided on the third outer shell 530, and a matching structure 140 matching with the connecting structure 531 is provided on the first inner shell 510, and the circumferential rotation between the third outer shell 530 and the first inner shell 510 is limited through the matching connection between the connecting structure 531 and the matching structure 140, and the third outer shell 530 and the first inner shell 510 are fastened. Connection is achieved.

[0075] In the specific implementation process, the ferrule 400 is plugged into one end of the first inner shell 510, and the third outer shell 530 is sleeved on the first inner shell 510, and at least part of the ferrule 400 is covered therein. The connection structure 531 is arranged on the third outer shell 530, and the first inner shell 510 can limit the circumferential rotation between the third outer shell 530 and the first inner shell 510 by cooperating with the connection structure 531. Among them, the ferrule 400 is a multi-core ferrule, and the material of the multi-core ferrule is PPS. After the first inner shell 510 and the third outer shell 530 are stably connected, the ferrule can be protected.

[0076] In one embodiment, if Figure 5 As shown in , the third shell 530 is also provided with a groove 532, and the groove 532 can facilitate the inter-matching connection between the third inner shell 530 and the third-party device.

[0077] In one embodiment, if Figure 5 and Figure 6 As shown in , the connection structure 531 is a snap-fit ​​groove arranged on the circumferential side of the third shell, and the matching structure 514 is a snap-fit ​​protrusion arranged along the circumferential direction. The snap-fit ​​groove is snap-fitted with the snap-fit ​​protrusion to fasten the third outer shell 530 and the first inner shell 510.

[0078] In the specific implementation process, the third outer shell 530 and the first inner shell 510 are connected by a snap-in protrusion. The snap-in protrusion is arranged on one end of the first inner shell 510 close to the ferrule 400 and is arranged along the circumference of the first inner shell 510. The snap-in protrusion can be a continuous structure along the circumference or a discontinuous structure arranged along the circumference. The shape and position of the snap-in groove correspond to the snap-in protrusion, and the snap-in groove can be set as a through hole or a groove. When the third outer shell 530 is installed with the first inner shell 510, the third outer shell 530 is sleeved on the outer peripheral side of the first inner shell 510 close to the ferrule 400, and the snap-in protrusion on the first inner shell 510 can be snapped into the snap-in groove on the third outer shell 530, thereby realizing the installation between the third outer shell 530 and the first inner shell 510.

[0079] In one embodiment, if Figure 1 As shown in , the multi-core optical fiber connector further includes: a tail sleeve 600, which is connected to the inner housing 500. In a specific implementation, the tail sleeve 600 can be sleeved on the outer side of the inner housing 500 and threadedly connected to the inner housing 500, thereby protecting the optical fiber cable and preventing the optical fiber cable from breaking. In some embodiments, the tail sleeve 600 can also be connected to the inner housing 500 by interference fit.

[0080] The multi-core optical fiber connector proposed in the present application includes an outer shell, a first connector and a second connector, wherein the first connector and the second connector are covered on the outer side of the outer shell, and the optical fiber cable and the ferrule pass through the cavity of the outer shell. A first connecting portion and a limiting platform are provided on the outer side of the outer shell, a connecting portion cooperating with the first connecting portion is provided on the inner side wall of the first connector, and a limiting platform cooperating with the limiting platform is provided on the second connector. When one end of the second connector is tightly connected to the other connecting components, the limiting platform abuts against the limiting platform, so that the second connector is tightly connected to the outer shell. This connection structure can simplify the installation steps of the multi-core optical fiber connector, facilitate operators to assemble and install the optical fiber connector, and ensure the accuracy of optical fiber connection.

[0081] In addition, the multi-core optical fiber connector also includes an inner shell, which includes a first inner shell and a second inner shell that are detachably connected. This segmented outer shell structure not only facilitates the passage of the optical fiber cable through the cavity inside the outer shell, but also facilitates the processing of the optical fiber connector, improves the processing efficiency of the optical fiber connector, and also ensures the processing accuracy of the optical fiber connector, thereby ensuring the optical fiber connection accuracy of the optical fiber connector, and facilitates the connection between the outer shells through the snap-fit ​​method, which also reduces the difficulty of operation for operators. Moreover, this split optical fiber connector structure can also adapt to optical fiber cables of various sizes, improving the adaptability of the optical fiber connector.

[0082] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0083] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0084] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A multi-core optical fiber connector, characterized in that: The invention comprises an outer shell (100), a first connecting member (200) and a second connecting member (300), wherein the first connecting member (200) and the second connecting member (300) are at least partially sheathed on the outer side of the outer shell (100); The outer shell (100) has a cavity inside that passes through both ends of the outer shell (100) for the optical fiber cable and the ferrule (400) to pass through; the outer side of the outer shell (100) is provided with a first connecting portion (110) and a limiting platform (120); A second connecting portion (210) is provided on the inner side wall of the first connecting member (200), and the second connecting portion (210) cooperates with the first connecting portion (110) to fasten the first connecting member (200) to the outer shell (100); A limiting platform (310) is provided on the inner side wall of the second connecting member (300), and the limiting platform (310) cooperates with the limiting platform (120) to limit the axial movement of the second connecting member (300) on the outer shell (100).

2. The multi-core optical fiber connector according to claim 1, characterized in that: The first connecting portion (110) comprises a connecting channel (111) and an anti-slip protrusion (112); the connecting channel (111) is circumferentially arranged along the outer wall of the outer shell (100); the anti-slip protrusion (112) is arranged in the connecting channel (111); and the anti-slip protrusion (112) is axially arranged along the outer shell (100).

3. The multi-core optical fiber connector according to claim 1, characterized in that: The first connection portion (110) is a connection groove, the number of the first connection portion (110) is at least one, and the second connection portion (210) is a connection protrusion.

4. The multi-core optical fiber connector according to claim 1, characterized in that: A guide groove (130) is axially arranged on the outer side of the outer shell (100), and an opening of the guide groove (130) is connected to an end surface of one end of the outer shell (100).

5. The multi-core optical fiber connector according to claim 1, characterized in that: The number of the first connection parts (110) is at least two, and at least two of the first connection parts (110) are intermittently arranged along the circumferential direction on the outer side of the outer shell (100); A protruding structure (330) is also provided on the inner side wall of the second connecting member (300), and the protruding structure (330) is cooperatively connected to the discontinuous area between at least two of the first connecting parts (110).

6. The multi-core optical fiber connector according to any one of claims 1 to 5, characterized in that: Also includes: An inner shell (500), wherein the outer shell (100) is sheathed on the outer side of the inner shell (500), the inner shell (500) comprises a second inner shell (520) and a first inner shell (510) connected in sequence, and the optical fiber cable passes through the inside of the first inner shell (510) and the second inner shell (520) and docks with the ferrule (400), wherein: The first inner shell (510) is provided with a second clamping portion (511), and the second inner shell (520) is provided with a matching portion (521) matched with the second clamping portion (511), so as to fasten the first inner shell (510) and the second inner shell (520) together; The second inner shell (520) is provided with a guide portion (522), and the outer shell (100) is connected to the inner shell (500) through the guide portion (522).

7. The multi-core optical fiber connector according to claim 6, characterized in that: The inner shell (500) further comprises a third inner shell (530), wherein: The third inner shell (530) is covered on one end of the first inner shell (510) connected to the insert (400), and a connecting structure (531) is provided on the third inner shell (530), and a matching structure (514) matching with the connecting structure (531) is provided on the first inner shell (510).

8. The multi-core optical fiber connector according to claim 6, characterized in that: The second clamping portion (511) is a protrusion arranged on the circumferential side of the first inner shell (510), and the matching portion (521) is a through hole communicating with the internal cavity of the second inner shell (520).

9. The multi-core optical fiber connector according to claim 6, characterized in that: The guide portion (522) includes two guide side walls (5221), and the two guide side walls (5221) are both arranged along the axial direction of the second inner shell (520). The two guide side walls (5221) form a guide channel (5222), and one end of the guide channel (5222) is connected to an end surface of one end of the second inner shell (520).

10. The multi-core optical fiber connector according to claim 8, characterized in that: The second clamping portion (511) comprises a buffer structure (5111) and a clamping structure (5112) connected to the buffer structure (5111), wherein: The buffer structure (5111) has a connection slope along the connection direction of the second inner shell (520) and the first inner shell (510), and the clamping structure (5112) is a protrusion.

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