CN220271602U

CN220271602U - Optical fiber connector, optical assembly, optical device and optical module

Info

Publication number: CN220271602U
Application number: CN202321985792.3U
Authority: CN
Inventors: 王目喜; 于文科; 张伟; 王芳; 仲兆良
Original assignee: Qingdao Xinghang Photoelectric Technology Co ltd
Current assignee: Qingdao Xinghang Photoelectric Technology Co ltd
Priority date: 2023-07-26
Filing date: 2023-07-26
Publication date: 2023-12-29
Anticipated expiration: 2033-07-26

Abstract

The utility model discloses an optical fiber connector, an optical assembly, an optical device and an optical module, wherein the optical fiber connector comprises a socket and a plug, the socket comprises a socket base body, a ferrule, a socket sleeve and a hole plug, and the socket base body is provided with an inner hole and an external thread of the socket base body; the insert core is arranged in the inner hole of the socket base body; the socket sleeve is arranged in the inner hole of the socket base body and sleeved on the insert core; the hole plug is arranged in the inner hole of the socket base body and is connected with the socket sleeve; the plug comprises a nut, a sleeve and a pin assembly, wherein the nut is provided with a nut inner hole, and a thread and a nut limiting structure are arranged on the nut inner hole; the screw cap is sleeved on the sleeve, and the screw cap limiting structure is limited on the sleeve; the sleeve is sleeved on the contact pin assembly, a third sleeve limiting structure of the sleeve is limited on the contact pin assembly, and an elastic element is arranged between the third sleeve limiting structure and the contact pin assembly. The connection stability and reliability of the ferrule and the contact pin assembly are high, the design is simple and compact, and the miniaturization of the optical fiber connector is realized.

Description

Optical fiber connector, optical assembly, optical device and optical module

Technical Field

The present utility model relates to the technical field of optical communication devices, and in particular, to an optical fiber connector, an optical assembly, an optical device, and an optical module.

Background

With the development of optical communication technology, optical communication devices such as optical networks and optical modules have been widely used in daily life.

The optical fiber connector is used as an active connecting device for optical communication, has very wide application in the optical communication technology, and has the requirements of connection reliability, stability, convenience and rapidness in disassembly and miniaturization.

The existing optical fiber connector still has the conditions of complex structure and unsatisfied volume, so that a miniaturized optical fiber connector with simple structure is urgently needed.

The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art.

Disclosure of Invention

The utility model provides an optical fiber connector, which solves the technical problems of complex structure and larger volume of the traditional optical fiber connector.

In order to achieve the aim of the utility model, the utility model is realized by adopting the following technical scheme:

an optical fiber connector comprises a socket and a plug,

the socket includes:

a socket base having a socket base bore and external threads;

a ferrule mounted in the socket base bore;

the socket sleeve is arranged in the inner hole of the socket base body and sleeved on the insert core;

a plug mounted in the socket base bore and connected to the socket sleeve;

the plug comprises:

the nut is provided with a nut inner hole, and a thread and a nut limiting structure are arranged on the nut inner hole;

the sleeve comprises a first sleeve limiting structure and a second sleeve limiting structure, the nut is sleeved on the sleeve, and the nut limiting structure is limited between the first sleeve limiting structure and the second sleeve limiting structure;

the contact pin assembly comprises a first contact pin limiting structure and a second contact pin limiting structure, the contact pin assembly is sleeved with the sleeve, a third sleeve limiting structure of the sleeve is limited between the first contact pin limiting structure and the second contact pin limiting structure, and an elastic element is arranged between the third sleeve limiting structure and the first contact pin limiting structure.

In the optical fiber connector, the socket base body and the sleeve are provided with the positioning structures.

The optical fiber connector comprises the socket base body inner hole, wherein the socket base body inner hole comprises a first inner hole section, a second inner hole section and a third inner hole section which are connected in sequence, the first inner hole section is used for installing the ferrule, the second inner hole section is used for installing the socket sleeve, the third inner hole section is used for installing the hole plug, and the hole plug is sleeved on the socket sleeve; or the socket base body inner hole comprises a first inner hole section and a second inner hole section which are connected in sequence, wherein the first inner hole section is used for installing the ferrule, the second inner hole section is used for installing the socket sleeve and the hole plug, and the socket sleeve is connected with the end part of the hole plug.

In the optical fiber connector, when the plug is sleeved on the socket sleeve, the inner wall of the plug comprises an annular protrusion which is contacted with the end part of the socket sleeve.

In the optical fiber connector described above, the outer wall of the receptacle base body has fitting projections thereon.

The fiber optic connector as described above, the receptacle sleeve has an opening in an axial direction.

The optical fiber connector comprises the pin assembly, the pins and the optical fibers, wherein the pins are positioned on the pin assembly, and the first pin limiting structure and the second pin limiting structure are positioned on the pin assembly.

An optical assembly comprising the socket, a package and an electrical interface as described above, the socket being mounted on the package.

The optical device comprises a tube body, a tail fiber and the two plugs, wherein the two plugs and the tail fiber are respectively connected with the tube body through optical fibers.

The optical module comprises a shell, two optical assemblies and one optical device, wherein the two optical assemblies and the one optical device are arranged in the shell, a socket of one optical assembly is connected with one plug of the optical device, a socket of the other optical assembly is connected with the other plug of the optical device, a pipe body is arranged between the two optical assemblies, the two optical assemblies are fixedly arranged in the shell through fixing pieces, and a tail fiber is arranged on the shell through a tail fiber fixing piece.

Compared with the prior art, the utility model has the advantages and positive effects that: an optical fiber connector comprises a socket and a plug, wherein the socket comprises a socket base body, a plug pin, a socket sleeve and a hole plug, and the socket base body is provided with an inner hole and an external thread of the socket base body; the insert core is arranged in the inner hole of the socket base body; the socket sleeve is arranged in the inner hole of the socket base body and sleeved on the insert core; the hole plug is arranged in the inner hole of the socket base body and is connected with the socket sleeve; the plug comprises a nut, a sleeve and a pin assembly, wherein the nut is provided with a nut inner hole, and a thread and a nut limiting structure are arranged on the nut inner hole; the sleeve comprises a first sleeve limiting structure and a second sleeve limiting structure, the nut is sleeved on the sleeve, and the nut limiting structure is limited between the first sleeve limiting structure and the second sleeve limiting structure; the contact pin assembly comprises a first contact pin limiting structure and a second contact pin limiting structure, the contact pin assembly is sleeved with the sleeve, a third sleeve limiting structure of the sleeve is limited between the first contact pin limiting structure and the second contact pin limiting structure, and an elastic element is arranged between the third sleeve limiting structure and the first contact pin limiting structure. According to the utility model, the plug and the socket are fixed through the external threads of the socket base body and the threaded assembly of the screw cap, meanwhile, the stability and the reliability of the connection of the insert core and the contact pin assembly are enhanced through the elastic element, the socket and the plug are simple and compact in structural design, and the miniaturization of the optical fiber connector is realized. The utility model ensures the reliability of application and meets the special working conditions of vibration, impact, temperature change and the like.

The optical component comprises the socket, the tube shell and the point borrowing port, the socket is arranged on the tube shell, and the socket structure is simple and compact in design and is beneficial to miniaturization of products.

The optical device comprises a tube body, a tail fiber and two plugs, wherein the two plugs and the tail fiber are respectively connected with the tube body through optical fibers, and the three-port optical device is adopted to realize single-fiber bidirectional and coarse wavelength division multiplexing.

The optical module comprises a shell, two optical components and an optical device, wherein the two optical components and the optical device are positioned in the shell, a socket of one optical component is connected with one plug of the optical device, a socket of the other optical component is connected with the other plug of the optical device, a pipe body is positioned between the two optical components, the two optical components are fixedly arranged in the shell through a fixing piece, and a tail fiber is arranged on the shell through a tail fiber fixing piece. The optical module has compact structure and high integration level, and realizes the miniaturization design of the optical module.

Other features and advantages of the present utility model will become apparent upon review of the detailed description of the utility model in conjunction with the drawings.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions of the prior art, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it will be obvious that the drawings in the following description are some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort to a person skilled in the art.

FIG. 1 is a schematic diagram of a receptacle of a fiber optic connector according to an embodiment;

FIG. 2 is an exploded view of a receptacle according to an embodiment;

FIG. 3 is a partial cross-sectional view of a receptacle according to an embodiment;

FIG. 4 is a schematic diagram of a plug according to an embodiment;

FIG. 5 is a partial cross-sectional view of a plug according to an embodiment;

FIG. 6 is an exploded view of FIG. 5;

FIG. 7 is a partial cross-sectional view of a plug and receptacle assembled according to an embodiment;

FIG. 8 is a schematic diagram of an optical assembly according to an embodiment;

FIG. 9 is a schematic diagram of an optical device according to an embodiment;

FIGS. 10-11 are schematic illustrations of the appearance of an optical module according to an embodiment;

fig. 12 is a schematic diagram within a light module housing according to an embodiment;

fig. 13 is a schematic illustration of the removal of fasteners from the light module housing according to an embodiment.

In the figure, 1, a socket;

11. a socket base; 111. an inner hole of the socket base body; 1111. a first bore section; 1112. a second bore section; 1113. a third bore section; 112. an external thread; 113. assembling the bulge; 114. a key slot;

12. a core insert;

13. a socket sleeve; 131. an opening in an axial direction;

14. a hole plug;

141. an annular protrusion;

2. a plug;

21. a screw cap; 211. a nut inner hole; 212. a thread; 213. a nut limiting structure;

22. a sleeve; 221. a first sleeve limiting structure; 222. a second sleeve limiting structure; 223. a third sleeve limiting structure; 224. an end key;

23. a pin assembly; 231. a pin body; 2311. a first contact pin limiting structure; 2312. a second contact pin limiting structure; 232. a contact pin; 233. an optical fiber;

24. an elastic element;

31. a tube shell; 32. an electrical interface;

41. a tube body; 42 tail fibers; 421. a pigtail fixing piece;

51. a housing; 52. a fixing member; 53. a bracket; 54. and (3) a bracket.

Detailed Description

The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

In the description of the present application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present application and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

The fiber optic connector includes a movable plug and a stationary receptacle (i.e., adapter). The optical component comprises a fixed socket, and the optical device comprises a movable plug, and the optical component and the optical device are used for connecting optical links inside the optical module. And the CWDM single-fiber bidirectional and pigtail type optical module is finally formed by using the optical component (the optical interface is set as a miniaturized optical fiber adapter), the movable plug of the miniaturized optical fiber connector, the circuit and the circuit board thereof (the circuit board is integrated with the board-to-board electric connector), the structural component, the optical device and the like, is used for CWDM single-fiber bidirectional optical communication among devices in the special field, ensures the reliability of application, and meets the special working conditions such as vibration, impact, temperature change and the like.

The following description of the fiber optic connector is given:

the optical fiber connector comprises a socket 1 and a plug 2, and the socket 1 and the plug 2 are assembled to realize optical path connection.

As shown in fig. 1-3, 7, the receptacle 1 includes a receptacle base 11, a ferrule 12, a receptacle sleeve 13, and a plug 14.

The socket base 11 is cylindrical, and the socket base 11 has a socket base inner hole 111 and an external thread 112.

The outer wall of the socket base 11 has fitting projections 113 thereon. The fitting projection 113 is used for fitting with other components, for example, with the housing of the optical module.

The fitting projection 113 is ring-shaped and is located on the outer wall of the socket base 11 on one side of the external screw thread 112.

The receptacle base bore 111 is used to mount the ferrule 12, the receptacle sleeve 13 and the plug 14. The ferrule 12, the receptacle sleeve 13 and the plug 14 are located within the receptacle base bore 111.

The ferrule 12 is mounted in the socket base bore 111; the socket sleeve 13 is arranged in the socket base body inner hole 111 and sleeved on the ferrule 12; the plug 14 is mounted in the socket base bore 111 and interfaces with the socket sleeve 13.

The ferrule 12 is a ceramic ferrule. The ferrule sleeve 13 is a ceramic sleeve.

The ferrule 12 is cylindrical, and the ferrule sleeve 13 and the plug 14 are both cylindrical.

The ferrule 12 and the plug 14 are both interference fit with the receptacle base bore 111.

The socket base bore 111 includes a first bore section 1111, a second bore section 1112, and a third bore section 1113 that are connected in sequence.

The first bore section 1111 has a smaller bore diameter than the second bore section 1112 and a smaller bore diameter than the third bore section 1113.

The first bore section 1111 is used to mount the ferrule 12, and the ferrule 12 is interference fit with the first bore section 1111.

The second bore section 1112 is for mounting the socket sleeve 13.

The third bore section 1113 is used to mount the plug 14, and the plug 14 is interference fit with the third bore section 1113.

The plug 14 is sleeved on the socket sleeve 13. The plug 14 is cylindrical in shape and the inner wall of the plug 14 includes an annular projection 141 which contacts the end of the socket sleeve 13.

In some embodiments, the socket base bore includes a first bore section for mounting the ferrule and a second bore section for mounting the socket sleeve and the plug, which are connected in sequence, with the ends of the socket sleeve and the plug being connected.

The socket sleeve 13 is used for limiting and guiding the contact pin of the plug, and the socket sleeve 13 is provided with an opening 131 in the axial direction so as to adapt to inner holes with different inner diameters.

A positioning structure, specifically a key slot 114, for positioning and assembling with the plug is also provided on the socket base 11.

As shown in fig. 4-7, the plug 2 includes a nut 21, a sleeve 22, and a pin assembly 23.

The nut 21 has a cylindrical shape, the nut 21 has a nut inner hole 211, and the nut inner hole 211 is provided with a thread 212 and a nut limiting structure 213.

The nut retainer 213 is a retainer ring formed on the nut bore 211.

The sleeve 22 is cylindrical, the sleeve 22 comprises a first sleeve limiting structure 221 and a second sleeve limiting structure 222, and the first sleeve limiting structure 221 and the second sleeve limiting structure 222 protrude out of the outer wall of the sleeve 22.

The nut 21 is sleeved on the sleeve 22, and the nut limiting structure 213 is limited between the first sleeve limiting structure 221 and the second sleeve limiting structure 222.

The sleeve 22 further comprises a third sleeve limiting structure 223, and the third sleeve limiting structure 223 protrudes out of the inner wall of the sleeve 22.

The first sleeve limiting structure 221, the second sleeve limiting structure 222 and the third sleeve limiting structure 223 are all annular.

In some embodiments, the second sleeve retainer structure 222 and the third sleeve retainer structure 223 are one piece.

The ferrule assembly 23 includes a ferrule body 231, a ferrule 232 positioned on the ferrule body 231, and an optical fiber 233. The first pin limiter 2311 and the second pin limiter 2312 are located on the pin body 231.

The pin body 231 is cylindrical, one end of the pin 232 and one end of the optical fiber 233 are inserted into the pin body 231 and connected, the other end of the pin 232 is positioned outside the pin body 231, and the other end of the optical fiber 233 is positioned outside the pin body 231. The end of the ferrule body 231 to which the optical fiber 233 is attached is tapered.

The contact pin 232 is in interference fit with the contact pin body 231, and the optical fiber 233 is adhered to the inner hole of the contact pin body 231.

The first pin limiting structure 2311 and the second pin limiting structure 2312 are located on the outer wall of the pin body 231, and are both annular.

The sleeve 22 is sleeved on the pin body 231 of the pin assembly 23, and the third sleeve limiting structure 223 of the sleeve 22 is limited between the first pin limiting structure 2311 and the second pin limiting structure 2312. An elastic element 24 is installed between the third sleeve stopper 223 and the first pin stopper 2311. The elastic element 24 is a spring.

The sleeve 22 is provided with a positioning structure, which is assembled and positioned with the positioning structure of the socket base 11. The positioning structure of the sleeve 22 is an end key 224.

The plug 2 is inserted with the socket 1, the end key 224 and the key groove 114 are used for positioning and stopping rotation of the plug, the nut 21 is rotated to be fastened with the socket base 11, and after the nut 21 is fastened in place, the nut limiting structure 213 of the nut 21 compresses the first sleeve limiting mechanism 221 of the sleeve 22 on the end face of the socket base 11. The pins 232 are in resilient contact with the ferrule 12 and the ceramic sleeve 13 ensures alignment of the optical fibers.

As shown in fig. 8, the optical assembly includes a socket 1, a package 31, and an electrical interface 32. The socket 1 and the electrical interface 32 are located on the housing 31.

The electrical interface 32 is a flexible circuit board.

As shown in fig. 9, the optical device includes a tube 41, a pigtail 42, and two plugs 2, and the two plugs 2 and the pigtail 42 are connected with the tube 41 through optical fibers, respectively.

A3-port (referred to as Pass: transmission end, reflection end, COM: public end) WDM optical device is adopted, the Pass and reflection ends are miniaturized optical fiber movable plugs, the COM end is a single-path tail fiber, and single-fiber bidirectional and Coarse Wavelength Division Multiplexing (CWDM) is realized.

As shown in fig. 10, 11, 12 and 13, the optical module includes a housing 51, two optical components and an optical device in the housing 51, wherein a socket of one optical component is connected with a plug of the optical device, a socket of the other optical component is connected with another plug of the optical device, the tube 41 is located between the two optical components, the two optical components are fixedly installed in the housing 51 by a fixing member 52, and the pigtail 42 is installed on the housing 51 by a pigtail fixing member 421.

A holder 53 for mounting the optical module is provided in the housing 51, and a limit groove for defining the fitting projection 113 is provided on the holder 53.

In some embodiments, the stand 53 may be integrally formed with the housing 51.

Also included within the housing 51 is a bracket 54 that secures the electrical interface 32.

The optical module has compact structure and high integration level, and the miniaturization design of the optical module is realized.

In the description of the above embodiments, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present utility model should be included in the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims

1. An optical fiber connector comprises a socket and a plug, and is characterized in that,

the socket includes:

a socket base having a socket base bore and external threads;

a ferrule mounted in the socket base bore;

a plug mounted in the socket base bore and connected to the socket sleeve;

the plug comprises:

2. The fiber optic connector of claim 1, wherein the receptacle base and the sleeve are provided with a locating structure.

3. The fiber optic connector of claim 1, wherein the receptacle matrix bore comprises a first bore section for mounting the ferrule, a second bore section for mounting the receptacle sleeve, and a third bore section for mounting the plug, the plug being nested on the receptacle sleeve; or the socket base body inner hole comprises a first inner hole section and a second inner hole section which are connected in sequence, wherein the first inner hole section is used for installing the ferrule, the second inner hole section is used for installing the socket sleeve and the hole plug, and the socket sleeve is connected with the end part of the hole plug.

4. A fiber optic connector according to claim 3, wherein the inner wall of the plug includes an annular projection that contacts the end of the receptacle sleeve when the plug is fitted over the receptacle sleeve.

5. The fiber optic connector of claim 1, wherein the outer wall of the receptacle base has a mounting projection thereon.

6. The fiber optic connector of claim 1, wherein the receptacle sleeve has an axially directed opening.

7. The fiber optic connector of claim 1, wherein the ferrule assembly includes a ferrule body, a ferrule and an optical fiber disposed on the ferrule body, the first and second ferrule limiting structures being disposed on the ferrule body.

8. An optical assembly comprising the socket of any one of claims 1-6, a housing, and an electrical interface, the socket being mounted on the housing.

9. An optical device, comprising a tube, a pigtail, and two plugs according to any one of claims 1, 2, and 7, wherein the two plugs and the pigtail are connected to the tube through optical fibers, respectively.

10. An optical module, characterized in that the optical module comprises a housing, two optical components of claim 8 and one optical device of claim 9 positioned in the housing, wherein a socket of one optical component is connected with one plug of the optical device, a socket of the other optical component is connected with the other plug of the optical device, the pipe body is positioned between the two optical components, the two optical components are fixedly installed in the housing through a fixing piece, and the pigtail is installed on the housing through a pigtail fixing piece.