CN111913255A

CN111913255A - Optical fiber ferrule module, optical fiber plug, optical fiber adapter and optical fiber connector

Info

Publication number: CN111913255A
Application number: CN202010664599.4A
Authority: CN
Inventors: 胡健; 李秀鹏; 李媛媛
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2020-11-10
Also published as: WO2022007432A1

Abstract

The embodiment of the application provides an optical fiber core inserting module, an optical fiber plug, an optical fiber adapter and an optical fiber connector, relates to the technical field of communication equipment, and can solve the problem that the assembling process is complex before and after threading in a construction site. The optical fiber connector comprises an optical fiber plug and an optical fiber adapter; the optical fiber plug includes a plug housing; the first end of the plug shell is used for being connected with an optical fiber, the second end of the plug shell is used for being plugged with an optical fiber adapter, a boss extends on the outer surface of the side wall of the plug shell close to the second end along the radial direction of the optical fiber, a blocking piece moving along the radial direction of the optical fiber is arranged on the optical fiber adapter, an avoiding opening capable of enabling the boss to pass through is formed in the blocking piece, and when the blocking piece moves to a first position, the avoiding opening is opposite to the boss; when the blocking piece moves to the second position, the avoiding opening and the lug boss are staggered. The optical fiber connector provided by the embodiment of the application can be used for optical fiber connection.

Description

Optical fiber ferrule module, optical fiber plug, optical fiber adapter and optical fiber connector

Technical Field

The application relates to the technical field of communication equipment, in particular to an optical fiber ferrule module, an optical fiber plug, an optical fiber adapter and an optical fiber connector.

Background

At present, networks are secret and inseparable from everyone, and the networks are basically required to be fully covered in house buildings, and the networks are registered. The optical fiber connector is a device for detachably connecting optical fibers, and is widely applied to optical fiber communication networks. In recent years, the demand for low latency has become more apparent with the demand for high bandwidth by home users. FTTR (Fiber to the Room) came from the beginning. At present, optical fiber connectors widely used mainly include an SC connector, an LC connector and the like, but the standard SC connector and LC connector have no traction structure, and further indoor pipe penetration cannot be realized. Therefore, in order to realize the entry of an optical fiber into a home, workers generally introduce the optical fiber into a room through a pipe penetrating device during construction, and then perform actions such as fusion splicing, installation of a cold splice and the like. The field construction process is complicated and can be operated by professional skills.

In the related art, in order to facilitate the optical fiber pipe penetration, the core part of the connector is separated from other shell structures, the pipe penetration of the core part is carried out independently, and the assembly is carried out after the pipe penetration is finished.

Disclosure of Invention

The embodiment of the application provides an optic fibre lock pin module, optic fibre plug, optic fibre adapter and fiber connector, can solve the problem that the equipment process is complicated around the job site threading.

In order to achieve the above purpose, the embodiment of the present application adopts the following technical solutions:

in a first aspect, an embodiment of the present application provides an optical fiber ferrule module, configured to fix an optical fiber in an optical fiber plug, including:

a plug housing;

the core inserting piece is arranged in the plug shell and connected with the core part of the optical fiber;

be equipped with anti-rotating structure between plug housing and the lock pin piece, anti-rotating structure is including setting up the first spacing profile at the radial surface of lock pin piece to and set up the spacing profile of second in plug housing inside, the contact cooperation of the spacing profile of first spacing profile and second to spacing plug housing and the relative rotation of lock pin piece.

The optical fiber ferrule module provided by the embodiment of the application has the advantages that the anti-rotation structure is arranged between the plug shell and the ferrule piece, the plug shell and the ferrule piece can be limited to rotate relatively through the contact matching of the first limiting profile and the second limiting profile, and the problem that the optical fiber core is damaged due to the fact that the plug shell and the ferrule piece rotate relatively possibly in the installation and use processes of the optical fiber connector is solved.

In a first possible implementation manner of the first aspect, one end of the insertion core member connected to the core of the optical fiber is a tail, and the other end is a head; be equipped with first limit structure between plug housing and the lock pin piece, first limit structure is including setting up the first fitting surface that blocks at the surface of inserting the core piece to and set up the second in the plug housing and block the fitting surface, the first fitting surface that blocks and the second block the fitting surface and have the overlap along the axial projection of optic fibre, when the lock pin piece stretches into in the plug housing, and behind first spacing profile and the spacing profile contact cooperation of second, the first fitting surface that blocks and the cooperation of second block the fitting surface, be used for preventing the motion of the head direction of inserting the core piece towards inserting the core piece. The first limiting profile and the second limiting profile are matched to limit the relative rotation of the plug shell and the plug core piece, and the first blocking matching surface and the second blocking matching surface are matched to limit the axial direction of the plug shell and the plug core piece.

In a second possible implementation manner of the first aspect, one end of the plug housing close to the optical fiber is a tail portion, and the other end is a head portion; the first blocking matching surface is arranged on one side, close to the tail part of the insertion core piece, of the first limiting molded surface; the second blocking matching surface is arranged on one side, close to the tail part of the plug shell, of the second limiting molded surface. Furthermore, when the plug element is connected with the plug outer shell, the head of the plug element firstly extends into the plug outer shell, and when the plug element is mounted at the corresponding position, the first blocking matching surface and the second blocking matching surface are matched, so that the plug element is prevented from continuously moving towards the head of the plug element. In addition, the first blocking matching surface and the second blocking matching surface are respectively only positioned on one side of the first limiting profile and one side of the second limiting profile, so that the ferrule can extend into the plug shell from one side of the plug shell and is installed in the plug shell. Specifically, the head of the plug core piece extends into the plug shell from the tail of the plug shell and moves towards the head of the plug core piece all the time, finally, after the first limiting profile and the second limiting profile are in contact fit, the first blocking fitting surface and the second blocking fitting surface can be matched, relative rotation of the limiting plug shell and the plug core piece is achieved, and relative movement of the plug core piece towards the inside of the plug shell is prevented. And simple structure, easy realization do benefit to miniaturized setting, when manufacturing, can be through technology shaping such as moulding plastics or turnning and milling, convenient manufacturing, and the installation is more convenient.

In a third possible implementation manner of the first aspect, the radially outer surface of the core inserting piece is recessed towards the inside of the core inserting piece to form a first limiting profile; the radially inner surface of the plug housing projects toward the central axis of the plug member to form a second limit profile. Of course, the first and second limiting profiles may be implemented in another way, for example, the radial outer surface of the ferrule protrudes toward the plug housing to form the first limiting profile; the radial inner surface of the plug shell is far away from the core inserting piece and is sunken to form a second limiting molded surface.

In a fourth possible implementation manner of the first aspect, the number of the first limiting profiles is multiple, the multiple first limiting profiles are distributed along the circumferential direction of the insertion core member, the number of the second limiting profiles is multiple, and the multiple second limiting profiles are matched with the multiple first limiting profiles in a one-to-one correspondence manner. The cooperation of the first spacing profile and the spacing profile of second can be the multiunit, promptly, the spacing profile of second can be a plurality ofly with first spacing profile, and the one-to-one cooperation sets up. The cooperation of the first spacing profile of multiunit and the spacing profile of second makes a plurality of positions atress when spacing relative rotation, and spacing effect is better like this, and plug shell and lock pin spare atress are even, and is not fragile.

In a second aspect, an embodiment of the present application provides an optical fiber plug, including:

a plug housing;

the first end of the crimping component is connected with the optical fiber shell, and the second end of the crimping component is in threaded connection with the plug shell; the first end of the plug shell is connected with the crimping component, the second end of the plug shell is used for being connected with the optical fiber adapter in an inserting mode, a boss is arranged on the outer surface of the side wall, close to the second end, of the plug shell and extends along the radial direction of the optical fiber, and the boss is used for being connected with a corresponding structure on the optical fiber adapter in a matched mode, so that the plug shell is connected with the optical fiber adapter.

According to the optical fiber plug provided by the embodiment of the application, the core insert piece is arranged inside the plug shell and is connected with the core part of the optical fiber; the first end of the crimping component is connected with the optical fiber shell, and the second end of the crimping component is in threaded connection with the plug shell, so that the optical fiber plug is formed. The outer surface of the side wall of the plug shell, which is close to the second end, is provided with the boss in an extending mode along the radial direction of the optical fiber, and the boss is arranged to be matched and connected with a corresponding structure on the optical fiber adapter, so that when the optical fiber is in the house, a worker can firstly penetrate the optical fiber connected with the optical fiber plug on site, only the optical fiber plug penetrates the optical fiber along with the optical fiber, the smooth penetration can be ensured, and the operation is easy; after the pipe penetration is finished, the optical fiber plug can be conveniently inserted into the optical fiber adapter through the lug boss on the optical fiber plug, so that the optical fiber can be connected to indoor corresponding equipment, and the optical fiber can enter the home. Therefore, the optical fiber plug and the optical fiber adapter can be conveniently and detachably connected, so that the operation and installation after the on-site pipe penetration are very convenient, and the problem of complex assembling process before and after the on-site threading can be solved.

In a first possible implementation manner of the second aspect, a side wall of the boss extending along the plugging direction of the fiber optic plug is provided with a first guiding surface, and the first guiding surface is used for guiding the boss to be in fit connection with a corresponding structure on the fiber optic adapter. In order to facilitate the matching connection of the boss and the corresponding structure of the optical fiber adapter, a first guide surface is arranged on one side wall of the boss, so that when the optical fiber plug is plugged with the optical fiber adapter, the first guide surface can guide the guide boss to be matched and connected with the corresponding structure on the optical fiber adapter.

In a second possible implementation manner of the second aspect, a side wall of the boss far away from the second end of the fiber optic plug is provided with a first stop surface, and the first stop surface is used for being matched with a corresponding structure on the fiber optic adapter so as to connect the fiber optic plug and the fiber optic adapter. The connection of the optical fiber plug and the optical fiber adapter is realized by matching the first stop surface of the boss with the corresponding structure of the optical fiber adapter.

In a third possible implementation form of the second aspect, the first stop face is at an acute angle or parallel to a radial direction of the optical fiber. The first stop surface can be arranged along the radial direction of the optical fiber, namely, the first stop surface is arranged in parallel with the radial direction of the optical fiber, and can also be arranged at an acute angle with the radial direction of the optical fiber, wherein the first stop surface is arranged in parallel with the radial direction of the optical fiber, when the first stop surface is stressed, the reaction force is directly directed to the axial direction of the optical fiber, and the loss of the force is very small; the first stop surface is arranged at an acute angle with the radial direction of the optical fiber, so that after the optical fiber plug is connected with the optical fiber adapter, the optical fiber plug has a force moving towards one end of the first stop surface, and therefore the characteristic can be utilized, the optical fiber plug is connected with the optical fiber adapter more and more tightly, and the optical fiber plug is not easy to disengage.

In a fourth possible implementation manner of the second aspect, an anti-rotation structure is arranged between the plug housing and the ferrule, the anti-rotation structure includes a first limiting profile arranged on the radial outer surface of the ferrule and a second limiting profile arranged inside the plug housing, and the first limiting profile and the second limiting profile are in contact fit to limit the relative rotation of the plug housing and the ferrule. Because the anti-rotation structure is arranged between the plug shell and the ferrule piece, the relative rotation of the plug shell and the ferrule piece can be limited through the contact matching of the first limiting molded surface and the second limiting molded surface, and the problem that the optical fiber core is damaged due to the possible relative rotation of the plug shell and the ferrule piece in the installation and use processes of the optical fiber connector is solved.

In a fifth possible implementation manner of the second aspect, one end of the insertion core member connected with the core of the optical fiber is a tail, and the other end is a head; be equipped with first limit structure between plug housing and the lock pin piece, first limit structure is including setting up the first fitting surface that blocks at the surface of inserting the core piece to and set up the second in the plug housing and block the fitting surface, the first fitting surface that blocks and the second block the fitting surface and have the overlap along the axial projection of optic fibre, when the lock pin piece stretches into in the plug housing, and behind first spacing profile and the spacing profile contact cooperation of second, the first fitting surface that blocks and the cooperation of second block the fitting surface, be used for preventing the motion of the head direction of inserting the core piece towards inserting the core piece. The first limiting profile and the second limiting profile are matched to limit the relative rotation of the plug shell and the insertion core piece, and a blocking matching surface is arranged to limit the axial displacement of the plug shell and the insertion core piece.

In a sixth possible implementation manner of the second aspect, the first blocking mating surface is arranged on one side of the first limiting profile close to the tail part of the core inserting piece; the second blocking matching surface is arranged on one side, close to the first end of the plug shell, of the second limiting molded surface. Furthermore, when the plug element is connected with the plug outer shell, the head of the plug element firstly extends into the plug outer shell, and when the plug element is mounted at the corresponding position, the first blocking matching surface and the second blocking matching surface are matched, so that the plug element is prevented from continuously moving towards the head of the plug element. In addition, the first blocking matching surface and the second blocking matching surface are respectively only positioned on one side of the first limiting profile and one side of the second limiting profile, so that the ferrule can extend into the plug shell from one side of the plug shell and is installed in the plug shell. Specifically, the head of the plug core piece extends into the plug shell from the tail of the plug shell and moves towards the head of the plug core piece all the time, finally, after the first limiting profile and the second limiting profile are in contact fit, the first blocking fitting surface and the second blocking fitting surface can be matched, relative rotation of the limiting plug shell and the plug core piece is achieved, and relative movement of the plug core piece towards the inside of the plug shell is prevented. And simple structure, easy realization do benefit to miniaturized setting, when manufacturing, can be through technology shaping such as moulding plastics or turnning and milling, convenient manufacturing, and the installation is more convenient.

In a seventh possible implementation manner of the second aspect, the radially outer surface of the core insert piece is recessed towards the inside of the core insert piece to form a first limit profile; the radially inner surface of the plug housing projects toward the central axis of the plug member to form a second limit profile. Of course, the first and second limiting profiles may be implemented in another way, for example, the radial outer surface of the ferrule protrudes toward the plug housing to form the first limiting profile; the radial inner surface of the plug shell is far away from the core inserting piece and is sunken to form a second limiting molded surface.

In an eighth possible implementation manner of the second aspect, the number of the first limiting profiles is multiple, the first limiting profiles are distributed along the circumferential direction of the insertion piece, the number of the second limiting profiles is multiple, and the second limiting profiles are matched with the first limiting profiles in a one-to-one correspondence manner. The cooperation of the first spacing profile and the spacing profile of second can be the multiunit, promptly, the spacing profile of second can be a plurality ofly with first spacing profile, and the one-to-one cooperation sets up. The cooperation of the first spacing profile of multiunit and the spacing profile of second makes a plurality of positions atress when spacing relative rotation, and spacing effect is better like this, and plug shell and lock pin spare atress are even, and is not fragile. In a ninth possible implementation manner of the second aspect, an elastic member is disposed between the crimping assembly and the ferrule, and the elastic member is used for elastically maintaining a distance between the crimping assembly and the ferrule. The elastic piece is arranged between the crimping assembly and the ferrule piece, when the distance between the crimping assembly and the ferrule piece is shortened, the elastic piece can be compressed, elastic deformation occurs, elasticity is generated, the crimping assembly and the ferrule piece are tried to be pushed away towards two sides, and namely the distance between the crimping assembly and the ferrule piece is kept elastically. From this, cooperation crimping subassembly and plug housing threaded connection's scheme, when plug housing and optical fiber adapter peg graft, plug housing drives the motion of crimping subassembly orientation grafting direction, can have certain compression to the distance between crimping subassembly and the lock pin piece, and then elastic deformation takes place for the elastic component, can give the power of the opposite direction of plug housing optical fiber plug grafting direction. That is, the elastic member serves to apply a force to the optical fiber plug in a direction opposite to the plugging direction of the optical fiber plug. After the optical fiber plug is connected with the optical fiber adapter, the elastic piece arranged in the optical fiber plug applies force in the direction opposite to the plugging direction of the optical fiber plug to the optical fiber plug, so that the boss and the optical fiber adapter are connected with a pretightening force correspondingly, and the stable connection state is ensured. In addition, when the first stop surface is arranged, the pretightening force provided by the elastic piece can enable the first stop surface to be matched with the corresponding structure more tightly.

In a tenth possible implementation manner of the second aspect, a limiting notch is provided on the optical fiber plug, and the limiting notch is used for matching with a corresponding structure of the optical fiber adapter to limit the relative rotation of the optical fiber plug and the optical fiber adapter. The boss is used for connecting optical fiber plug and optical fiber adapter, guarantees that optical fiber plug and optical fiber adapter keep the plug-in connection state, can prevent along the axial relative displacement of optic fibre, and in the use of optic fibre, optic fibre not only can receive axial tensile force, still can receive along its circumference revolving force. In order to prevent the circumferential rotating force applied to the optical fiber from affecting the splicing state of the optical fiber plug and the optical fiber adapter, the optical fiber plug is provided with a limiting notch which can be matched with a corresponding structure of the optical fiber adapter, and the relative rotation of the optical fiber plug and the optical fiber adapter along the circumferential direction can be limited, namely, the splicing state of the optical fiber plug and the optical fiber adapter can be prevented from being affected by the circumferential rotating force applied to the optical fiber.

In an eleventh possible implementation manner of the second aspect, an outer edge of the optical fiber plug is provided with a connecting structure, the connecting structure is used for connecting a pulling member, and one end of the pulling member, which is far away from the optical fiber plug, is provided with a pulling hole. During field construction, the optical fiber and the optical fiber plug are penetrated together, in order to facilitate penetration, the outer edge of the optical fiber plug is provided with a connecting structure, the connecting structure can be connected with a traction piece, and the penetration of the optical fiber with the optical fiber plug can be realized through the traction piece. Of course, in order to prevent the traction piece or the optical fiber plug from bending in the threading tube, the traction hole of the traction piece is arranged at one end far away from the optical fiber plug, namely, the traction hole is arranged at the foremost end part of a structure formed by the optical fiber, the optical fiber plug and the traction piece together, and the traction hole is subjected to traction force and can be used for driving the whole optical fiber to conveniently thread the tube.

In a twelfth possible implementation manner of the second aspect, the connection structure is an external thread structure disposed on the optical fiber plug, and the pulling member is detachably connected to the optical fiber plug through the external thread structure. Connection structure can make the multiple structure that can conveniently dismantle, for example, joint structure and threaded connection structure etc. in order to guarantee joint strength, prevents that the junction from breaking away at the threading in-process, and connection structure is for setting up the external screw thread structure at optical fiber plug, promptly, will draw a and can dismantle with optical fiber plug through the helicitic texture and be connected, guarantees joint strength. Meanwhile, in the process of pipe penetration, the traction piece is arranged behind the front optical fiber plug, so that the optical fiber plug is provided with an external thread structure, and correspondingly, the traction piece is provided with an internal thread structure.

In a third aspect, an embodiment of the present application provides an optical fiber adapter, where a first end of the optical fiber adapter is used for plugging an optical fiber plug, a second end of the optical fiber adapter is used for adapting to an optical fiber device interface, the first end of the optical fiber adapter has an installation cavity, one end of the optical fiber plug extends into the installation cavity, the optical fiber adapter is provided with a stopper that moves along a radial direction of an optical fiber, the stopper is provided with an avoiding opening, the avoiding opening enables a corresponding structure of the optical fiber plug to pass through, and when the stopper moves to a first position, the avoiding opening is opposite to the corresponding structure of the optical fiber plug; when the stopper moves to the second position, the opening is dislocated with the corresponding structure of the optical fiber plug.

The optical fiber adapter provided by the embodiment of the application has the advantages that the blocking piece moving along the radial direction of the optical fiber is arranged on the optical fiber adapter, and the blocking piece is provided with the avoiding opening which can enable the corresponding structure of the optical fiber plug to pass through. Like this, when optical fiber plug stretched into the installation intracavity, at this moment, the workman can make to keep off the piece and move to first position, kept away mouthful and optical fiber plug's corresponding structure relative position, at this moment, optical fiber plug's corresponding structure was crossed and is kept away the mouth, then, the workman can make to keep off the piece and move to the second position, makes and keeps away mouthful and optical fiber plug's corresponding structure dislocation mutually, and then keeps off the piece and blocks optical fiber plug's corresponding structure in one side for optical fiber plug can not extract, reaches the purpose of pegging graft. When the optical fiber adapter needs to be disassembled, a worker can move the blocking piece to the first position again to enable the opening to be opposite to the corresponding structure of the optical fiber plug, and at the moment, the corresponding structure of the optical fiber plug passes through the opening to enable the optical fiber plug to be pulled out of the installation cavity of the optical fiber adapter, so that the disassembly is realized. Therefore, the optical fiber plug and the optical fiber adapter can be conveniently and detachably connected, the operation and installation after the on-site pipe penetration are very convenient, and the problems of inconvenience in threading on a construction site and complex assembling process can be solved.

In a first possible implementation manner of the third aspect, a side wall of the avoiding opening extending along the plugging direction of the fiber optic plug is provided with a second guiding surface, and the second guiding surface is used for guiding a corresponding structure of the fiber optic plug to be in fit connection with the stopper. In order to facilitate the matching connection of the blocking piece and the corresponding structure of the optical fiber plug, a second guide surface is arranged on one side wall of the avoiding opening of the blocking piece, so that when the optical fiber plug is plugged with the optical fiber adapter, the second guide surface can guide the corresponding structure on the guiding optical fiber plug to be matched with the avoiding opening of the blocking piece, and finally, the second guide surface passes through the avoiding opening and is matched and clamped with the blocking piece.

In a second possible implementation manner of the third aspect, a side wall of the stopper away from the first end of the fiber optic adapter is provided with a second stop surface, and the second stop surface is used for matching with a corresponding structure on the fiber optic plug so as to connect the fiber optic plug and the fiber optic adapter. When the optical fiber plug is connected with the optical fiber adapter, the blocking piece is matched with the corresponding structure of the optical fiber plug, and the second stop surface arranged on the side wall of the blocking piece, which is far away from the first end of the optical fiber adapter, is an acting surface to prevent the optical fiber plug from being pulled out.

In a third possible implementation manner of the third aspect, the second stop surface is at an acute angle or parallel to a direction in which the stopper moves from the second position to the first position. The second stop surface may be disposed along a direction in which the stopper moves from the second position to the first position, that is, the second stop surface is parallel to the direction in which the stopper moves from the second position to the first position; the second stop surface and the blocking piece are arranged in parallel in the direction from the second position to the first position, when the second stop surface is stressed, the reaction force is directly directed to the axial direction of the optical fiber, the loss of force is small, and when the blocking piece moves, the matching friction force between the second stop surface and other structures is small, so that the blocking piece moves more smoothly, and the operation of a user is labor-saving and smooth; the second stop surface and the stop piece are arranged in an acute angle in the direction from the second position to the first position, so that after the optical fiber plug is connected with the optical fiber adapter, the optical fiber plug has a force moving towards one end of the second stop surface, which is inclined, and therefore, the characteristic can be utilized, the optical fiber plug is more tightly connected with the optical fiber adapter, and the optical fiber plug is not easy to disengage.

In a fourth possible implementation manner of the third aspect, a limiting groove is formed in one side, facing the installation cavity, of the blocking piece, a limiting protrusion is arranged on the inner wall of the installation cavity of the optical fiber adapter, corresponding to the limiting groove, and the limiting protrusion is slidably matched with the limiting groove to prevent the blocking piece from falling out of the optical fiber adapter. The stopper moves on the optical fiber adapter along the radial direction of the optical fiber and can move to the first position or the second position, in order to prevent the stopper from coming off from the optical fiber adapter in the moving process, a limiting groove is arranged on the stopper, a limiting protrusion is arranged on the inner wall of the mounting cavity of the optical fiber adapter corresponding to the limiting groove, and when the stopper moves on the optical fiber adapter along the radial direction of the optical fiber, the limiting protrusion always slides in the limiting groove in a matched mode, so that the stopper can be prevented from coming off from the optical fiber adapter.

In a fifth possible implementation manner of the third aspect, a limiting bump is arranged in the installation cavity of the optical fiber adapter, the limiting bump extends along the radial direction of the optical fiber, and the limiting bump is used for being matched with a corresponding structure of the optical fiber plug to limit the relative rotation of the optical fiber plug and the optical fiber adapter along the circumferential direction. In the use of the optical fiber, the optical fiber is subjected not only to tensile force in the axial direction but also to rotational force in the circumferential direction thereof. In order to prevent the circumferential rotating force applied to the optical fiber from affecting the splicing state of the optical fiber plug and the optical fiber adapter, a limiting lug is arranged in a mounting cavity of the optical fiber adapter and can be matched with a corresponding structure of the optical fiber plug, the rotation of the optical fiber plug and the optical fiber adapter along the circumferential direction can be limited, and namely, the circumferential rotating force applied to the optical fiber can be prevented from affecting the splicing state of the optical fiber plug and the optical fiber adapter.

In a fourth aspect, an embodiment of the present application provides an optical fiber connector, including:

the fiber optic plug of any one of the second aspects;

a fiber optic adapter according to any of the third aspects;

the optical fiber plug includes a plug housing; the first end of the plug shell is used for being connected with an optical fiber, the second end of the plug shell is used for being plugged with an optical fiber adapter, a boss extends on the outer surface of the side wall of the plug shell close to the second end along the radial direction of the optical fiber, a blocking piece moving along the radial direction of the optical fiber is arranged on the optical fiber adapter, an avoiding opening capable of enabling the boss to pass through is arranged on the blocking piece, and when the blocking piece moves to a first position, the avoiding opening is opposite to the boss; when the blocking piece moves to the second position, the avoiding opening and the lug boss are staggered.

The optical fiber connector provided by the embodiment of the application comprises the optical fiber plug in any one of the second aspects and the optical fiber adapter in any one of the third aspects; because the optical fiber plug is provided with the lug boss close to the second end in the radial direction, the optical fiber adapter is provided with the stopper moving along the radial direction of the optical fiber, and the stopper is provided with the avoidance opening. Therefore, when the optical fiber enters the home, a worker can firstly penetrate the optical fiber connected with the optical fiber plug on the spot and only penetrate the optical fiber plug along with the optical fiber, so that the smooth penetration can be ensured, and the operation is easy; and after the pipe penetration is finished, connecting the optical fiber plug with the optical fiber adapter. The connection between the optical fiber plug and the optical fiber adapter is convenient to disassemble, specifically, when the optical fiber plug extends into the optical fiber adapter, a worker can move the stopper to the first position to make the avoidance opening opposite to the boss, and at this time, the boss can cross the avoidance opening, namely, the optical fiber plug is spliced with the optical fiber adapter; then, the worker can move the blocking piece to the second position, so that the avoiding opening and the boss are staggered, and the blocking piece blocks the boss at one side, so that the optical fiber plug cannot be pulled out and is kept in a state of being plugged with the optical fiber adapter. When the optical fiber adapter needs to be disassembled, a worker can move the blocking piece to the first position again to avoid the relative position of the opening and the boss, and at the moment, the optical fiber plug can be pulled out from the installation cavity of the optical fiber adapter to realize the disassembly. Therefore, the optical fiber plug and the optical fiber adapter can be conveniently and detachably connected, the operation and installation after the on-site pipe penetration are very convenient, and the problems of inconvenience in threading on a construction site and complex assembling process can be solved.

In a first possible implementation manner of the fourth aspect, a resilient member is disposed in the fiber optic adapter, and the resilient member abuts against the stopper and is used for providing a restoring force for moving the stopper from the first position to the second position. When the blocking piece moves to the first position, the avoiding opening is opposite to the boss; when the stopper moves to the second position, the avoiding opening and the boss are staggered; in order to further guarantee the reliability that optical fiber plug and optical fiber adapter are connected, can increase the structure and give a restoring force that keeps off a piece, namely, set up the resilience piece, this resilience piece can provide and keep off the piece and move to the restoring force of second position by first position, and then can guarantee to keep off under the circumstances (the normality) that does not receive the force, be located the second position, avoid mouthful misplacing with the boss this moment, if just in time the boss has crossed and has kept away the mouth, can guarantee that optical fiber plug and optical fiber adapter keep in connected state.

In a second possible implementation manner of the fourth aspect, one end of the stopper is an operating end, the operating end is located outside the fiber optic adapter, and the stopper moves from the second position to the first position when the operating end is stressed. In order to facilitate the operation of the worker, one end of the stopper is located outside the optical fiber as an operating end, and the worker can move the stopper from the second position to the first position by applying a force to the operating end. Namely, the boss and the avoiding opening can be aligned by operating the operation end, and the boss can further cross the avoiding opening, so that the optical fiber plug and the optical fiber adapter are plugged; or the lug boss is separated from the avoiding opening, so that the optical fiber plug and the optical fiber adapter are disassembled.

In a third possible implementation manner of the fourth aspect, when the second end of the optical fiber plug extends into the mounting cavity, the first sidewall of the boss extending along the plugging direction of the optical fiber plug is matched with the second sidewall of the avoidance opening extending along the plugging direction of the optical fiber plug, at least one of the first sidewall and the second sidewall is provided with a guide surface, and the guide surface and the plugging direction of the optical fiber plug are arranged at an acute angle. When the optical fiber plug extends into the installation cavity of the optical fiber adapter, the blocking piece can be operated manually to move to the first position, so that the boss of the optical fiber plug can pass through the avoiding opening of the optical fiber adapter, and the insertion is realized. The movement can also be guided by the fact that the matching surface and the inserting direction of the optical fiber plug form an acute angle, specifically, the first side wall and the second side wall are matching surfaces, and only one of the first side wall and the second side wall is provided with a guiding surface which is arranged at an acute angle with the inserting direction of the optical fiber plug, so that a part of the inserting force of the optical fiber plug can be converted into a force which is applied to the blocking piece along the radial direction of the optical fiber, and the blocking piece can move to the first position without operating the blocking piece. Therefore, under the action of the resilient piece, when the optical fiber plug is plugged with the optical fiber adapter, the optical fiber plug only needs to be pushed into the installation cavity of the optical fiber adapter, and the plugging of the optical fiber plug and the optical fiber adapter can be realized without operating the stopper. The skilled worker can completely realize the single-hand operation of plugging.

In a fourth possible implementation form of the fourth aspect, the guide surface comprises a first guide surface provided on the first side wall, and a second guide surface provided on the second side wall. At least one of the first side wall and the second side wall is provided with a guide surface, the guide surface can be only arranged on the first side wall, the guide surface can be only arranged on the second side wall, or the guide surfaces can be arranged on both the first side wall and the second side wall. Wherein the friction is much smaller in the manner that the guide surfaces are provided, making the guiding easier, and therefore the guide surfaces comprise a first guide surface provided on the first side wall, and a second guide surface provided on the second side wall.

In a fifth possible implementation manner of the fourth aspect, the first guide surface and the second guide surface are both disposed at an acute angle to the direction along which the fiber optic plug is plugged. The first guide surface and the second guide surface may be inclined at the same angle or different angles. Wherein, the cooperation of the first spigot surface and the second spigot surface of same angle is got up more conveniently laborsavingly, consequently, first spigot surface and second spigot surface all are the acute angle setting with the direction of pegging graft along optical fiber plug.

In a sixth possible implementation manner of the fourth aspect, a first stop face is provided on a front side wall of the boss extending in the direction in which the stopper moves, a second stop face is provided on a rear side wall of the stopper extending in the direction in which the optical fiber plug is inserted, and when the boss passes over the avoidance opening, the first stop face and the second stop face cooperate to prevent the boss from moving in a direction opposite to the direction in which the optical fiber plug is inserted.

In a seventh possible implementation manner of the fourth aspect, the first stop surface and the second stop surface are both at an acute angle with respect to the direction in which the stopper moves from the second position to the first position, and the front ends of the first stop surface and the second stop surface along the direction in which the stopper moves from the second position to the first position are inclined toward the first end of the fiber optic adapter. The first stop surface and the second stop surface can be arranged along the moving direction of the stopper, namely, the first stop surface and the second stop surface are both parallel to the direction of the stopper moving from the second position to the first position; the first stop surface and the second stop surface are arranged in parallel with the direction of the stopper from the second position to the first position, when acting force is acted between the first stop surface and the second stop surface, the acting force is directly directed to the axial direction of the optical fiber, the loss of the force is small, and when the stopper moves, the friction force of the first stop surface and the second stop surface which are matched with each other is small, so that the stopper moves more smoothly, and the operation of a user is labor-saving and smooth; the first stop face and the second stop face are arranged at an acute angle with the direction of the stop piece moving from the second position to the first position, so that after the optical fiber plug is connected with the optical fiber adapter, the optical fiber plug can have a force moving towards one end of the first stop face in an inclined mode through the matching of the first stop face and the second stop face, and therefore the optical fiber plug can be more tightly clamped and is not easy to separate when moving towards one end of the first stop face in an inclined mode by utilizing the characteristic.

In addition, because the first stop surface and the second stop surface are arranged at an acute angle with the direction of the stopper moving from the second position to the first position, when the optical fiber plug extends into the installation cavity of the optical fiber adapter, a section of the boss retreats after passing through the avoidance opening, so that the first stop surface and the second stop surface are in contact fit; when the connection between the unlocking optical fiber plug and the optical fiber adapter needs to be disassembled, the first stop surface and the second stop surface are matched in the process that the stopper moves from the second position to the first position, so that the boss is pushed forwards for a certain distance in the direction of plug insertion, and finally, after the stopper moves to the first position, the boss can be separated from the avoiding opening.

In an eighth possible implementation manner of the fourth aspect, the first stop surface and the second stop surface are both at the same acute angle with respect to a direction in which the stopper moves from the second position to the first position. The first stop surface and the second stop surface are arranged at an acute angle with the direction of the stop member moving from the second position to the first position, and the inclination angles of the first stop surface and the second stop surface can be the same angle or different angles. Wherein, the first stop surface and the second stop surface at the same angle are matched more conveniently and more laborsavingly.

In a ninth possible implementation manner of the fourth aspect, the first stop surface and the second stop surface are cambered surfaces or flat surfaces. The first stop surface and the second stop surface can be in the same shape or different shapes, wherein the first stop surface and the second stop surface in the same shape are matched more closely, conveniently and labor-saving. The specific shape of the arrangement can be realized in various ways as long as the arrangement can be smoothly matched, such as a cambered surface or a plane surface.

In a tenth possible implementation manner of the fourth aspect, an anti-rotation structure is arranged between the plug housing and the ferrule, and the anti-rotation structure includes a first limiting profile arranged on the radial outer surface of the ferrule and a second limiting profile arranged inside the plug housing, and the first limiting profile and the second limiting profile are in contact fit to limit the relative rotation of the plug housing and the ferrule. Because the anti-rotation structure is arranged between the plug shell and the ferrule piece, the relative rotation of the plug shell and the ferrule piece can be limited through the contact matching of the first limiting molded surface and the second limiting molded surface, and the problem that the optical fiber core is damaged due to the possible relative rotation of the plug shell and the ferrule piece in the installation and use processes of the optical fiber connector is solved.

In an eleventh possible implementation manner of the fourth aspect, one end of the core member connected to the core of the optical fiber is a tail, and the other end is a head; be equipped with first limit structure between plug housing and the lock pin piece, first limit structure is including setting up the first fitting surface that blocks at the surface of inserting the core piece to and set up the second in the plug housing and block the fitting surface, the first fitting surface that blocks and the second block the fitting surface and have the overlap along the axial projection of optic fibre, when the lock pin piece stretches into in the plug housing, and behind first spacing profile and the spacing profile contact cooperation of second, the first fitting surface that blocks and the cooperation of second block the fitting surface, be used for preventing the motion of the head direction of inserting the core piece towards inserting the core piece. The first limiting profile and the second limiting profile are matched to limit the relative rotation of the plug shell and the plug core piece, and the first blocking matching surface and the second blocking matching surface are matched to limit the axial direction of the plug shell and the plug core piece.

In a twelfth possible implementation manner of the fourth aspect, the first barrier mating surface is disposed on a side of the first limit profile close to the tail portion of the core insertion member; the second blocking matching surface is arranged on one side, close to the first end of the plug shell, of the second limiting molded surface. Furthermore, when the plug element is connected with the plug outer shell, the head of the plug element firstly extends into the plug outer shell, and when the plug element is mounted at the corresponding position, the first blocking matching surface and the second blocking matching surface are matched, so that the plug element is prevented from continuously moving towards the head of the plug element. In addition, the first blocking matching surface and the second blocking matching surface are respectively only positioned on one side of the first limiting profile and one side of the second limiting profile, so that the ferrule can extend into the plug shell from one side of the plug shell and is installed in the plug shell. Specifically, the head of the plug core piece extends into the plug shell from the tail of the plug shell and moves towards the head of the plug core piece all the time, finally, after the first limiting profile and the second limiting profile are in contact fit, the first blocking fitting surface and the second blocking fitting surface can be matched, relative rotation of the limiting plug shell and the plug core piece is achieved, and relative movement of the plug core piece towards the inside of the plug shell is prevented. And simple structure, easy realization do benefit to miniaturized setting, when manufacturing, can be through technology shaping such as moulding plastics or turnning and milling, convenient manufacturing, and the installation is more convenient.

In a thirteenth possible implementation manner of the fourth aspect, the radially outer surface of the core insert piece is recessed towards the inside of the core insert piece to form a first limit profile; the radially inner surface of the plug housing projects toward the central axis of the plug member to form a second limit profile. Of course, the first and second limiting profiles may be implemented in another way, for example, the radial outer surface of the ferrule protrudes toward the plug housing to form the first limiting profile; the radial inner surface of the plug shell is far away from the core inserting piece and is sunken to form a second limiting molded surface.

In a fourteenth possible implementation manner of the fourth aspect, the number of the first limiting profiles is multiple, the plurality of first limiting profiles are distributed along the circumferential direction of the insertion piece, the number of the second limiting profiles is multiple, and the plurality of second limiting profiles are matched with the plurality of first limiting profiles in a one-to-one correspondence manner. The cooperation of the first spacing profile and the spacing profile of second can be the multiunit, promptly, the spacing profile of second can be a plurality ofly with first spacing profile, and the one-to-one cooperation sets up. The cooperation of the first spacing profile of multiunit and the spacing profile of second makes a plurality of positions atress when spacing relative rotation, and spacing effect is better like this, and plug shell and lock pin spare atress are even, and is not fragile.

In a fifteenth possible implementation manner of the fourth aspect, an elastic member is disposed between the crimping assembly and the ferrule, and the elastic member is used for elastically maintaining a distance between the crimping assembly and the ferrule. The elastic piece is arranged between the crimping assembly and the ferrule piece, when the distance between the crimping assembly and the ferrule piece is shortened, the elastic piece can be compressed, elastic deformation occurs, elasticity is generated, the crimping assembly and the ferrule piece are tried to be pushed away towards two sides, and namely the distance between the crimping assembly and the ferrule piece is kept elastically. From this, cooperation crimping subassembly and plug housing threaded connection's scheme, when plug housing and optical fiber adapter peg graft, plug housing drives the motion of crimping subassembly orientation grafting direction, can have certain compression to the distance between crimping subassembly and the lock pin piece, and then elastic deformation takes place for the elastic component, can give the power of the opposite direction of plug housing optical fiber plug grafting direction. That is, the elastic member serves to apply a force to the optical fiber plug in a direction opposite to the plugging direction of the optical fiber plug. Moreover, the force provided by the elastic piece arranged in the optical fiber plug can enable the first stop surface and the second stop surface to be matched more tightly.

In addition, the elastic piece arranged in the optical fiber plug is matched with the characteristics that the first stop face, the second stop face and the blocking piece are inclined in the movement direction, so that the optical fiber plug can be conveniently plugged and unlocked. Specifically, when the optical fiber plug is plugged with the optical fiber adapter, the elastic piece applies a force to the optical fiber plug in a direction opposite to the plugging direction of the optical fiber plug, so that the first stop surface and the second stop surface are contacted and matched all the time, and disconnection is avoided; when the stopper moves from the second position to the first position, the first stopper face and the second stopper face are matched, the boss is pushed forward for a distance towards the plug plugging direction, at the moment, the deformation of the elastic piece is larger, the force in the direction opposite to the plugging direction of the optical fiber plug is applied to the optical fiber plug is increased, and then finally, after the stopper moves to the first position, the elastic piece gives a larger elastic force to the boss, so that the boss can be separated from the avoiding opening, namely, the optical fiber plug is not pulled out by a worker hand, the optical fiber plug can be popped out by the elastic force provided by the elastic piece, therefore, the one-hand operation can be completely realized when the optical fiber plug and the optical fiber adapter are disassembled, and the operation is convenient for the worker to perform site construction.

In a sixteenth possible implementation manner of the fourth aspect, the elastic member is located in front of the boss in the plugging direction of the fiber optic plug, and when the boss passes over the avoidance port, the elastic member is in a compressed state to apply a force to the boss in a direction opposite to the plugging direction of the fiber optic plug. The elastic component exerts to optical fiber plug and can have multiple implementation mode with the power of the opposite direction of optical fiber plug grafting direction, and its implementation mode of exerting force can be in the compression state also can be in tensile state, and wherein, tensile state deformation occupation space is big, and difficult realization, consequently, when the boss surpassed and dodge the mouth, the elastic component was in compression state to exert the power along optical fiber plug grafting direction opposite direction to the boss.

In a seventeenth possible implementation manner of the fourth aspect, a receiving groove is formed in the optical fiber adapter corresponding to the boss, the stopper moves to the second position, and when the boss is located in the receiving groove, the relative rotation between the optical fiber plug and the optical fiber adapter along the circumferential direction is limited. After the boss is crossed and dodged the mouth, keep off the piece and be located the second position, can make optical fiber plug and optical fiber adapter peg graft, at this moment, the boss is restricted in one side of keeping off the piece, can prevent optical fiber plug and optical fiber adapter along the axial relative motion of optic fibre, of course, in order to prevent optical fiber plug and optical fiber adapter along the relative rotation of optic fibre circumference, can set up the holding tank corresponding to the boss on optical fiber adapter, when the boss is located the holding tank, can spacing optical fiber plug and optical fiber adapter along the relative rotation of circumference. The scheme utilizes the structure of the boss to realize multiple positioning, and not only limits the axial relative motion of the optical fiber plug and the optical fiber adapter along the optical fiber, but also limits the relative rotation of the optical fiber plug and the optical fiber adapter along the circumferential direction of the optical fiber.

In an eighteenth possible implementation manner of the fourth aspect, a limiting groove is formed in one side, facing the installation cavity, of the blocking piece, a limiting protrusion is arranged on the installation cavity of the optical fiber adapter corresponding to the limiting groove, and the limiting protrusion is matched with the limiting groove to prevent the blocking piece from being separated from the optical fiber adapter. The stopper moves on the optical fiber adapter along the radial direction of the optical fiber and can move to the first position or the second position, in order to prevent the stopper from coming off from the optical fiber adapter in the moving process, a limiting groove is arranged on the stopper, a limiting protrusion is arranged on the inner wall of the mounting cavity of the optical fiber adapter corresponding to the limiting groove, and when the stopper moves on the optical fiber adapter along the radial direction of the optical fiber, the limiting protrusion always slides in the limiting groove in a matched mode, so that the stopper can be prevented from coming off from the optical fiber adapter.

In a nineteenth possible implementation manner of the fourth aspect, the number of the bosses is two, the two bosses are arranged on two opposite sides of the optical fiber plug in the radial direction, the blocking piece comprises two blocking rods which are connected together, each blocking rod is provided with one avoiding opening, and the two blocking rods and the two avoiding openings are arranged in a one-to-one correspondence manner with the two bosses. In order to further ensure the inserting firmness of the optical fiber plug and the optical fiber adapter, a plurality of groups of bosses can be arranged between the optical fiber plug and the optical fiber adapter and matched with the corresponding positions of the stoppers, for example, two bosses are arranged on the optical fiber plug, each stopper comprises two stop rods, the two stop rods correspond to the two bosses one by one, and meanwhile, each stop rod is also correspondingly provided with a dodging opening. Therefore, when the optical fiber plug and the optical fiber adapter are plugged, the two bosses respectively pass through the avoidance openings and are respectively matched with the two stop rods of the stop piece, so that the optical fiber plug and the optical fiber adapter are limited in two positions, and the reliability is improved. In addition, in order to be stressed evenly, the two bosses are arranged on two opposite sides of the optical fiber plug in the radial direction.

In a twenty-first possible implementation manner of the fourth aspect, a second limiting structure extending in the radial direction is provided between the fiber plug and the fiber adapter, and the second limiting structure is used for limiting the relative rotation of the fiber plug and the fiber adapter in the circumferential direction. The optical fiber plug and the optical fiber adapter are prevented from rotating relative to each other along the circumferential direction, and the optical fiber adapter is correspondingly provided with a containing groove by utilizing the structure of the lug boss on the optical fiber plug. Of course, it is also possible to provide a special second limiting structure at other positions between the fiber optic plug and the fiber optic adapter to limit the relative rotation of the fiber optic plug and the fiber optic adapter in the circumferential direction without using the structure of the boss on the fiber optic plug.

In a twenty-first possible implementation manner of the fourth aspect, the second limiting structure includes a limiting notch disposed on the optical fiber plug, and a limiting protrusion disposed in the installation cavity of the optical fiber adapter, and the limiting protrusion extends along a radial direction of the optical fiber and is matched with and extends into the limiting notch. One implementation of the second limiting structure may be, for example, a limiting notch is provided on the optical fiber plug, a limiting protrusion is provided on the optical fiber adapter, and the relative rotation between the optical fiber plug and the optical fiber adapter along the circumferential direction can be limited by radially extending the limiting protrusion into the limiting notch. Of course, the positions of the limit notch and the limit bump may be interchanged, for example, the limit bump is disposed on the optical fiber plug, and the limit notch is disposed on the optical fiber adapter.

In a twenty-second possible implementation manner of the fourth aspect, two limiting notches are respectively located on two radially opposite sides of the optical fiber plug, and two limiting protrusions are in one-to-one correspondence with the two limiting notches. The limiting convex blocks and the limiting notches can be multiple groups, for example, the limiting convex blocks and the limiting notches are two and are in one-to-one correspondence. Like this, the cooperation of a plurality of spacing lugs and spacing breach makes the reliability that prevents optical fiber plug and optical fiber adapter along the relative rotation of circumference higher, and in addition, two spacing breachs are located optical fiber plug's radial relative both sides respectively, can guarantee that the atress is even, are favorable to structure setting and extension structure life.

Drawings

Fig. 1 is a schematic structural diagram of an optical fiber connector according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram illustrating a plugging direction of an optical fiber plug and an optical fiber adapter of an optical fiber connector according to an embodiment of the present disclosure;

fig. 3 is a schematic perspective view of an optical fiber plug of an optical fiber connector and an optical fiber adapter provided in the embodiment of the present application after being plugged;

fig. 4 is a schematic perspective view of an optical fiber plug provided with a pulling element according to an embodiment of the present disclosure;

FIG. 5 is a schematic axial cross-sectional view of a fiber optic plug with a pulling element according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a boss disposed on an optical fiber plug according to an embodiment of the present disclosure;

FIG. 7 is a schematic structural diagram of a fiber optic adapter according to an embodiment of the present disclosure;

FIG. 8 is a schematic view of a fiber optic adapter according to an embodiment of the present disclosure with the shutter open;

fig. 9 is a schematic axial cross-sectional view illustrating a fiber optic plug of a fiber optic connector plugged with a fiber optic adapter according to an embodiment of the present disclosure;

fig. 10 is a schematic axial cross-sectional view of an optical fiber plug of an optical fiber connector according to an embodiment of the present application after being plugged with an optical fiber adapter, and the cross-section is perpendicular to the cross-section of fig. 6.

Fig. 11 is a schematic cross-sectional view illustrating a fiber optic plug of a fiber optic connector according to an embodiment of the present disclosure before being plugged with a fiber optic adapter;

fig. 12 is a schematic cross-sectional view illustrating a fiber optic plug of a fiber optic connector being plugged with a fiber optic adapter according to an embodiment of the present disclosure;

fig. 13 is a schematic cross-sectional view illustrating a locking structure of a fiber optic plug of a fiber optic connector after being plugged with a fiber optic adapter according to an embodiment of the present disclosure;

fig. 14 is a schematic cross-sectional view illustrating an optical fiber plug and an optical fiber adapter of an optical fiber connector unlocked according to an embodiment of the present application;

fig. 15 is a schematic cross-sectional view of an optical fiber connector according to an embodiment of the present disclosure after an optical fiber plug and an optical fiber adapter are unlocked;

FIG. 16 is a schematic diagram of a resilient member of a fiber optic adapter of a fiber optic connector according to an embodiment of the present disclosure;

fig. 17 is an exploded view of a fiber stub module of an optical fiber connector according to an embodiment of the present disclosure;

fig. 18 is a schematic perspective view of an optical fiber ferrule module of an optical fiber connector according to an embodiment of the present disclosure;

FIG. 19 is a perspective view of a plug housing of an optical fiber connector according to an embodiment of the present disclosure;

FIG. 20 is a perspective view of a rear side of a plug housing of an optical fiber connector according to an embodiment of the present application;

fig. 21 is a schematic perspective view illustrating a mating structure of a plug housing and a ferrule of an optical fiber connector according to an embodiment of the present application;

fig. 22 is a schematic perspective view illustrating a plug member of an optical fiber connector according to an embodiment of the present disclosure;

fig. 23 is a schematic perspective view illustrating a mating structure of a plug housing and a ferrule of an optical fiber connector according to an embodiment of the present disclosure;

fig. 24 is an exploded view of the plug housing, ferrule and crimp member of an optical fiber connector according to an embodiment of the present disclosure;

FIG. 25 is a schematic view of a stop of a fiber optic adapter according to an embodiment of the present disclosure;

FIG. 26 is a schematic structural view of a positioning bump disposed in a mounting cavity of a fiber optic adapter according to an embodiment of the present disclosure;

fig. 27 is a schematic structural view of an optical fiber plug provided with a limiting notch according to an embodiment of the present disclosure;

fig. 28 is a schematic structural diagram illustrating that a first section of an adapter and a second section of a fiber optic adapter provided in an embodiment of the present application are identical.

Reference numerals:

100-a fiber optic plug; 101-a boss; 1011-first stop face; 102-a resilient member; 103-a limit notch; 104-a connecting structure; 105-a plug housing; 1051-a second limit profile; 1052-a second barrier mating surface; 106-a core insert piece; 1061-a first limiting profile; 1062 — a first barrier mating surface; 107-a crimp assembly; 1071-a crimp seat; 1072-crimp ring; 1073-heat shrink tube; 200-a fiber optic adapter; 201-installation cavity; 2011-limit projection; 2012-limit lug; 202-a stop; 2021-dodge mouth; 2022-operating end; 2023-second stop face; 2024-limit groove; 2025-stop lever; 203-a resilient member; 204-a guide surface; 2041-a first guide surface; 2042-a second guide surface; 205-accommodating grooves; 206-a first adapter portion; 207-a second adapter portion; 300-an optical fiber; 400-a traction member; 401-traction holes.

Detailed Description

In the following, the terms "first", "second" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of the present application, "a plurality" means two or more unless otherwise specified.

Further, in the present application, directional terms such as "upper", "lower", "left", and "right" are defined with respect to the schematically-placed orientation of components in the drawings, and it is to be understood that these directional terms are relative concepts, which are used for descriptive and clarifying purposes, and that they may vary accordingly depending on the orientation in which the components are placed in the drawings.

In the present application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection, a removable connection, or an integral part; may be directly connected or indirectly connected through an intermediate.

It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

The embodiment of the application provides an optical fiber connector, can include optic fibre plug and optic fibre adapter, can solve the inconvenient and complicated problem of assembling process of job site threading. The optical fiber connector may be a common variety of optical fiber connectors.

The optical fibers are to be connected to suitable fiber optic connectors for connection and transmission of optical signals, the fiber optic connectors generally comprising: sc (square connector), lc (lucent connector), fc (ferro connector), and the like. The embodiment of the present application does not specifically limit the specific form of the optical fiber connector.

An optical fiber generally includes an optical fiber housing and an optical fiber core inside the optical fiber housing, wherein a portion of the core of the optical fiber, which is capable of conducting an optical signal, is connected to and transmits the optical signal, and the optical fiber housing is used for protection and fixation. In the process of connecting the optical fiber and the optical fiber connector, the optical fiber housing and the optical fiber core are generally separately connected and fixed, that is, the optical fiber housing is fixed on a corresponding structure, so that the fixation of the whole optical fiber and the optical fiber adapter is ensured, and the optical fiber core is fixed at a corresponding position so as to continuously transmit optical signals.

The optical fiber connector provided by the embodiment of the present application, referring to fig. 1, fig. 2 and fig. 3, includes an optical fiber plug 100 and an optical fiber adapter 200;

the fiber optic plug 100 includes a plug housing 105; a first end of the plug housing 105 is used for connecting with the optical fiber 300, and a second end of the plug housing 105 is used for plugging with the optical fiber adapter 200, that is, a first end of the optical fiber plug 100 is used for connecting with the optical fiber 300, and a second end of the optical fiber plug 100 is used for plugging with the optical fiber adapter 200; referring to fig. 4 and 5, a worker may first poling the optical fiber 300 with the optical fiber plug 100 attached thereto in the field.

The first end of the fiber optic adapter 200 is used for plugging the fiber optic plug 100, and the second end is used for adapting a fiber optic equipment interface (e.g., an optical module). referring to fig. 2, the first end of the fiber optic adapter 200 has a mounting cavity 201, and the second end of the fiber optic plug 100 extends into the mounting cavity 201.

As shown in fig. 2 and 6, the outer surface of the sidewall of the plug housing 105 of the optical fiber plug 100 near the second end is provided with a boss 101 extending along the radial direction of the optical fiber 300, as shown in fig. 7, 8, 9 and 10, the optical fiber adapter 200 is provided with a stopper 202 moving along the radial direction of the optical fiber 300, the stopper 202 is provided with an avoidance port 2021 allowing the boss 101 to pass through, and when the stopper 202 moves to the first position, the avoidance port 2021 is opposite to the boss 101; when the stop 202 moves to the second position, the escape opening 2021 is misaligned with the boss 101.

The optical fiber connector provided by the embodiment of the present application, referring to fig. 1, fig. 2 and fig. 3, includes an optical fiber plug 100 and an optical fiber adapter 200; because the optical fiber plug 100 is provided with the boss 101 in the radial direction near the second end, the optical fiber adapter 200 is provided with the stopper 202 moving in the radial direction of the optical fiber 300, and the stopper 202 is provided with the escape opening 2021. Thus, when an optical fiber enters a home, referring to fig. 3 and 4, a worker can firstly insert the optical fiber 300 connected with the optical fiber plug 100 into a tube on the site, and only inserts the optical fiber plug 100 into the tube along with the optical fiber 300, so that smooth tube insertion can be ensured, and the operation is easy; after the threading is completed, referring to fig. 2 and 3, the fiber optic plug 100 and the fiber optic adapter 200 are connected.

Referring to fig. 1 and 2, the optical fiber plug 100 may include: a plug housing 105; a ferrule 106 provided inside the plug housing 105, the ferrule 106 being connected to the core of the optical fiber 300; a crimp assembly 107, a first end of the crimp assembly 107 being coupled to the optical fiber 300 housing, a second end of the crimp assembly 107 being threadably coupled to the plug housing 105; with reference to the figure, the crimping component 107 may include a crimping seat 1071, a crimping ring 1072 and a heat shrink tube 1073, the crimping seat 1071 is in threaded connection with the plug housing 105, the crimping ring 1072 is sleeved on the crimping seat 1071, the housing of the optical fiber 300 is sleeved on the crimping ring 1072, and finally, the heat shrink tube 1073 is sleeved on the crimping ring 1072 and the housing of the optical fiber 300, and the crimping ring 1072 and the housing of the optical fiber 300 are fixed in a limiting manner by using a heat shrinkage characteristic.

For convenience of description, in the optical fiber connector provided in the embodiments of the present application, the terms of "axial direction", "radial direction", and "circumferential direction" are used, where "axial direction" refers to a direction along the axis of the cylinder; "radial" means along the radius of the cross-section, i.e., perpendicular to the axis; "circumferential" means in the direction around the axis of the cylinder, i.e., perpendicular to the axis, and perpendicular to the radius of the cross-section. Referring to fig. 1, in the optical fiber connector provided in the embodiment of the present application, the optical fiber plug 100, the optical fiber adapter 200, and the optical fiber 300 all extend along their respective axial directions, i.e., axial directions; the section vertical to the axial direction is radial; the circumference is the direction of the excircle circumference of cylinder.

Specifically, referring to fig. 11, when the optical fiber plug 100 is required to be plugged into the optical fiber adapter 200, a worker may move the stopper 202 to the first position to avoid the opening 2021 to be opposite to the boss 101, and referring to fig. 12, the boss 101 may cross the avoiding opening 2021, that is, the optical fiber plug 100 is plugged into the optical fiber adapter 200; then, referring to fig. 13, the worker can move the stopper 202 to the second position to cause the escape opening 2021 to be misaligned with the boss 101, and then the stopper 202 stops the boss 101 at one side, so that the optical fiber plug 100 cannot be pulled out and remains in the state of being plugged with the optical fiber adapter 200.

When disassembly is required, referring to fig. 14, the worker can move the stopper 202 to the first position again to make the escape opening 2021 opposite to the boss 101, and at this time, referring to fig. 15, the optical fiber plug 100 can be pulled out from the installation cavity 201 of the optical fiber adapter 200 to realize disassembly.

Therefore, the optical fiber plug 100 and the optical fiber adapter 200 can be conveniently detachably connected, so that the operation and installation after pipe threading on site are very convenient, and the problems of inconvenience in threading on the construction site and complex assembling process can be solved.

It should be noted that, referring to fig. 12 or fig. 15, when the stopper 202 moves to the first position, the avoiding opening 2021 is aligned with the boss 101, where the relative position means that the avoiding opening 2021 and the boss 101 are exactly aligned in the direction of plugging the fiber optic plug, so that the boss 101 can pass through the avoiding opening 2021; it can also be understood that both sidewalls of the boss 101 extending in the axial direction of the optical fiber 300 are within the opening range of the escape opening 2021; it can also be understood that the projection of the boss 101 toward the avoidance port 2021 falls within the opening range of the avoidance port 2021.

Referring to fig. 11 and 13, when the flight 202 moves to the second position, the escape opening 2021 is misaligned with the boss 101. The phase dislocation means that the avoiding opening 2021 and the boss 101 are just staggered in the insertion direction of the optical fiber plug, so that the boss 101 cannot cross the avoiding opening 2021; it can also be understood that at least one side of the two sidewalls of the boss 101 extending in the axial direction of the optical fiber 300 is outside the opening range of the avoiding opening 2021; it is also understood that the projection of the boss 101 toward the avoiding opening 2021 at least partially falls outside the opening range of the avoiding opening 2021.

In some embodiments, to further ensure the reliability of the connection between the fiber optic plug 100 and the fiber optic adapter 200, structures may be added that impart a restoring force to the stop 202. That is, as shown in fig. 8 and 16, a resilient member 203 is provided, and the resilient member 203 can provide a restoring force for moving the stopper 202 from the first position to the second position, so as to ensure that the stopper 202 is located at the second position under an unstressed condition (normal state), in which the avoiding opening 2021 is dislocated with the boss 101, and if the boss 101 just has passed over the avoiding opening 2021, the optical fiber plug 100 and the optical fiber adapter 200 can be ensured to be kept in a connection state.

The resilient member 203 can have various implementations, such as a spring plate or a spring, and referring to fig. 8 and 16, the resilient member 203 is an implementation of a spring plate, wherein a support end of the spring plate can be annular and is disposed at a corresponding position of the housing of the fiber optic adapter 200 in a fitting manner.

To facilitate the operation of the worker, as shown in fig. 1 and 8, one end of the stopper 202 is located outside the optical fiber as an operating end 2022, and the worker can move the stopper 202 from the second position to the first position by applying a force to the operating end 2022. That is, by operating the operating end 2022, the boss 101 and the avoiding opening 2021 can be aligned, and further the boss 101 can pass the avoiding opening 2021, so as to realize the insertion of the optical fiber plug 100 and the optical fiber adapter 200; or the boss 101 is disengaged from the relief opening 2021 to achieve the detachment of the fiber optic plug 100 and the fiber optic adapter 200.

When the fiber optic plug 100 extends into the installation cavity 201 of the fiber optic adapter 200, the stopper 202 may be manually operated to move to the first position, so that the boss 101 of the fiber optic plug 100 may pass through the avoiding opening 2021 of the fiber optic adapter 200, thereby achieving the plugging. This movement may also be guided by the mating surface being disposed at an acute angle to the direction of mating with the fiber optic plug 100.

In the scheme of guiding the movement by the mating surface being disposed at an acute angle with the insertion direction of the optical fiber plug 100, specifically, as shown in fig. 11 and 12, when the second end of the optical fiber plug 100 extends into the installation cavity 201, a first sidewall of the boss 101 extending along the insertion direction of the optical fiber plug 100 is matched with a second sidewall of the avoidance port 2021 extending along the insertion direction of the optical fiber plug 100, at least one of the first sidewall and the second sidewall is provided with a guiding surface 204, and the guiding surface 204 is disposed at an acute angle with the insertion direction of the optical fiber plug 100.

Thus, referring to fig. 11 and 12, the first side wall and the second side wall are mating surfaces, and only one of the first side wall and the second side wall has a guiding surface 204 disposed at an acute angle to the insertion direction of the fiber optic plug 100, so that a part of the insertion force of the fiber optic plug 100 can be converted into a force applied to the stopper 202 along the radial direction of the optical fiber, and the stopper 202 can be moved to the first position without operating the stopper 202.

Thus, in addition to the function of the resilient member 203, when the optical fiber plug 100 is plugged into the optical fiber adapter 200, referring to fig. 11, 12 and 13, the optical fiber plug 100 is only pushed into the mounting cavity 201 of the optical fiber adapter 200, and the plug connection between the optical fiber plug 100 and the optical fiber adapter 200 can be achieved without operating the stopper 202. The skilled worker can completely realize the single-hand operation of plugging.

At least one of the first side wall and the second side wall is provided with a guide surface 204, the guide surface 204 may be provided only on the first side wall, the guide surface 204 may be provided only on the second side wall, or the guide surfaces 204 may be provided on both the first side wall and the second side wall. Wherein the guide surfaces 204 are provided in such a manner that the frictional force is much smaller, making the guiding easier, and therefore, referring to fig. 12, the guide surfaces 204 include a first guide surface 2041 provided on the first sidewall and a second guide surface 2042 provided on the second sidewall.

The first guide surface 2041 and the second guide surface 2042 may or may not be inclined at the same angle. The first guiding surface 2041 and the second guiding surface 2042 at the same angle are matched more conveniently and more easily, so that the first guiding surface 2041 and the second guiding surface 2042 are both arranged at an acute angle with the direction along which the optical fiber plug 100 is plugged.

In some embodiments, as shown in fig. 13, of the side walls of the boss 101 extending in the direction in which the stopper 202 moves, the front side wall in the direction in which the optical fiber plug 100 is plugged is provided with a first stopper surface 1011, and of the side walls of the stopper 202 extending in the direction in which the stopper 202 moves, the rear side wall in the direction in which the optical fiber plug 100 is plugged is provided with a second stopper surface 2023, and when the boss 101 passes over the avoiding opening 2021, referring to fig. 13, the first stopper surface 1011 cooperates with the second stopper surface 2023 to prevent the boss 101 from moving in the direction opposite to the direction in which the optical fiber plug 100 is plugged.

The first stop surface 1011 and the second stop surface 2023 may be disposed along the moving direction of the stopper 202, that is, the first stop surface 1011 and the second stop surface 2023 are both parallel to the direction in which the stopper 202 moves from the second position to the first position; or an acute angle may be formed between the first stop surface 1011 and the second stop surface 2023, and the direction from the second position to the first position of the stopper 202, wherein the first stop surface 1011 and the second stop surface 2023 are both parallel to the direction from the second position to the first position of the stopper 202, when the first stop surface 1011 and the second stop surface 2023 act on each other, the acting force is directly directed to the axial direction of the optical fiber 300, and the loss of force is small, and when the stopper 202 moves, the first stop surface 1011 and the second stop surface 2023 cooperate with each other with a small friction force, so that the stopper 202 moves more smoothly, and the user operates the stopper in a labor-saving and handy manner; the first stop surface 1011 and the second stop surface 2023 are both disposed at an acute angle with the direction of the stopper 202 moving from the second position to the first position, so that after the optical fiber plug 100 and the optical fiber adapter 200 are connected, the optical fiber plug 100 has a force moving towards the end inclined towards the first stop surface 1011 through the cooperation of the first stop surface 1011 and the second stop surface 2023, and thus, by utilizing the characteristic, the more tightly the end inclined towards the first stop surface 1011 of the optical fiber plug 100 is moved, the more tightly the end is clamped, and the optical fiber plug is not easy to be removed.

Therefore, referring to fig. 13, the first stopping surface 1011 and the second stopping surface 2023 are both at an acute angle or parallel to the direction of the movement of the stopper 202 from the second position to the first position, and the front ends of the first stopping surface 1011 and the second stopping surface 2023 along the direction of the movement of the stopper 202 from the second position to the first position are inclined toward the first end of the fiber optic adapter 200. Thus, referring to fig. 13, after the optical fiber plug 100 is connected to the optical fiber adapter 200, the first stop surface 1011 tends to move along the direction of the stop 202 from the second position to the first position by the engagement of the first stop surface 1011 and the second stop surface 2023, so that the optical fiber plug 100 is pulled by the axial direction of the optical fiber 300, and the optical fiber plug 100 is connected to the optical fiber adapter 200 more tightly and is less likely to be disconnected.

In addition, referring to fig. 11, 12 and 13, since the first stop surface 1011 and the second stop surface 2023 are both disposed at an acute angle with the direction of the stopper 202 moving from the second position to the first position, when the optical fiber plug 100 extends into the installation cavity 201 of the optical fiber adapter 200, the boss 101 goes beyond the avoiding opening 2021 and then retracts to make the first stop surface 1011 and the second stop surface 2023 contact and mate; when it is necessary to detach and unlock the connection between the fiber optic plug 100 and the fiber optic adapter 200, referring to fig. 14 and 15, during the movement of the stopper 202 from the second position to the first position, the first stop surface 1011 and the second stop surface 2023 are engaged, so that the boss 101 is pushed forward a distance toward the plug insertion direction, and finally, after the stopper 202 moves to the first position, the boss 101 can be disengaged from the escape opening 2021.

The first stop surface 1011 and the second stop surface 2023 are both disposed at an acute angle with the direction of the stopper 202 moving from the second position to the first position, and the inclination angles of the first stop surface 1011 and the second stop surface 2023 may be the same angle or different angles. The first stop surface 1011 and the second stop surface 2023 at the same angle are more convenient and labor-saving to match. Therefore, the first stop surface 1011 and the second stop surface 2023 are both at the same acute angle with the direction in which the stopper 202 moves from the second position to the first position.

The first stop surface 1011 and the second stop surface 2023 may have the same shape or different shapes, wherein the first stop surface 1011 and the second stop surface 2023 having the same shape are more tightly fitted, thereby being more convenient and labor-saving. The specific shape of the arrangement can be realized in various ways as long as the arrangement can be smoothly matched, such as a cambered surface or a plane surface.

In order to prevent the relative rotation between the plug housing 105 and the ferrule 106, an anti-rotation structure is provided between the plug housing 105 and the ferrule 106, and referring to fig. 17, 18, 19 and 22, the anti-rotation structure includes a first limit profile 1061 disposed on the radial outer surface of the ferrule 106 and a second limit profile 1051 disposed inside the plug housing 105, and the first limit profile 1061 and the second limit profile 1051 are in contact fit to limit the relative rotation between the plug housing 105 and the ferrule 106.

Due to the anti-rotation structure between the plug housing 105 and the ferrule 106, referring to fig. 23, the first limiting profile 1061 and the second limiting profile 1051 can limit the relative rotation between the plug housing 105 and the ferrule 106 by contact fit, so as to prevent the problem that the fiber core is damaged due to the relative rotation between the plug housing 105 and the ferrule 106 during the installation and use of the fiber optic connector 100.

Not only is there a risk of relative rotational movement between the plug housing 105 and the ferrule 106, but also there is a risk of axial movement, the engagement of the first and second limiting

profiles

1061 and 1051 can limit the relative rotation of the plug housing 105 and the ferrule 106, and in order to limit the axial displacement of the plug housing 105 and the ferrule 106, a first limiting structure can be provided between the plug housing 105 and the ferrule 106.

Specifically, referring to fig. 17, 22 and 24, the ferrule 106 is connected to the core of the optical fiber 300 with a tail at one end and a head at the other end; the first stop structure includes a first stop mating surface 1062 disposed on the outer surface of the ferrule 106 and a second stop mating surface 1052 disposed inside the plug housing 105, the first stop mating surface 1062 and the second stop mating surface 1052 have an overlap in projection along the axial direction of the optical fiber 300, and when the ferrule 106 is inserted into the plug housing 105 and the first stop profile 1061 and the second stop profile 1051 are in contact mating, the first stop mating surface 1062 and the second stop mating surface 1052 are mated for stopping the movement of the ferrule 106 toward the head of the ferrule 106.

The first and

second retention profiles

1061 and 1051 cooperate to retain the plug housing 105 and ferrule 106 from relative rotation and the first and second

stop mating surfaces

1062 and 1052 cooperate to retain the plug housing 105 and ferrule 106 from axial movement.

It should be noted that the first barrier mating surface 1062 and the second barrier mating surface 1052 have an overlap in the projection along the axial direction of the optical fiber 300, that is, the first barrier mating surface 1062 and the second barrier mating surface 1052 may have different extending directions, so long as they have an overlap in the projection along the axial direction of the optical fiber 300, and when the ferrule 106 extends into the plug housing 105, the first barrier mating surface 1062 and the second barrier mating surface 1052 contact and abut against each other, thereby preventing the movement of the plug member 106 toward the direction of the head portion of the plug member 106.

In some embodiments, the first barrier mating surface 1062 and the second barrier mating surface 1052 may both extend in a radial direction of the optical fiber 300. In this way, the first blocking engagement surface 1062 and the second blocking engagement surface 1052 extend perpendicular to the axial direction of the optical fiber 300, the manufacturing process is convenient, and the relative movement between the plug member 106 and the plug housing 105 in the axial direction is more effective.

For ease of manufacture, referring to fig. 22 and 24, a first stop mating surface 1062 is provided on a side of the first stop profile 1061 proximate the trailing portion of the plug member 106; the second stop mating surface 1052 is disposed on a side of the second stop profile 1051 adjacent the first end of the plug housing 105.

Further, when the ferrule 106 is connected to the plug housing 105, the head of the plug member 106 first extends into the plug housing 105, and when the plug member is mounted to the corresponding position, the first blocking engagement surface 1062 and the second blocking engagement surface 1052 are engaged, which prevents the plug member 106 from continuing to move toward the head of the plug member 106. In addition, since the first stop mating surface 1062 and the second stop mating surface 1052 are located on only one side of the first stop profile 1061 and the second stop profile 1051, respectively, the plug member 106 can be inserted from one side of the plug housing 105 and installed in the plug housing 105.

Specifically, the head of the plug element 106 extends from the tail of the plug housing 105 and moves towards the head of the plug element 106, and finally, after the first limiting profile 1061 and the first limiting profile 1061 are in contact fit, the first blocking mating surface 1062 and the second blocking mating surface 1052 are matched, so that the relative rotation of the plug housing 105 and the ferrule 106 is realized, and the relative movement of the plug element 106 towards the inside of the plug housing 105 is prevented.

And simple structure, easy realization do benefit to miniaturized setting, when manufacturing, can be through technology shaping such as moulding plastics or turnning and milling, convenient manufacturing, and the installation is more convenient.

In some embodiments, referring to fig. 22, the radially outer surface of the ferrule 106 is recessed toward the interior of the core member 106, forming a first stop profile 1061; referring to fig. 19, the radially inner surface of the plug housing 105 projects toward the central axis of the core member 106 to form a second retention profile 1051.

Of course, the first and

second stop profiles

1061, 1051 can be implemented in another manner, such as, for example, the radially outer surface of the ferrule 106 projecting toward the plug housing 105 to form the first stop profile 1061; the radially inner surface of the plug housing 105 is recessed away from the plug member 106 to form a second retention profile 1051.

Referring to fig. 22, the first limiting profiles 1061 may be multiple, and a plurality of the first limiting profiles 1061 are distributed along the circumferential direction of the ferrule 106, referring to fig. 19, the second limiting profiles 1051 may also be multiple, and the plurality of the second limiting profiles 1051 are in one-to-one corresponding fit with the plurality of the first limiting profiles 1061. The first limiting profile 1061 and the second limiting profile 1051 can be matched in multiple groups, that is, the second limiting profile 1051 and the first limiting profile 1061 can be matched in one-to-one correspondence. Referring to fig. 23, the cooperation of the first limiting profiles 1061 and the second limiting profiles 1051 makes the limiting rotation be forced at a plurality of positions, so that the limiting effect is better, and the plug housing 105 and the ferrule 106 are uniformly stressed and not easily damaged.

It should be noted that the number of the first limiting profiles 1061 and the second limiting profiles 1051 can be set according to actual needs, and in principle, the greater the number of the first limiting profiles 1061 and the second limiting profiles 1051, the better the limiting effect, but the more structural arrangement inevitably increases the processing and manufacturing processes, and therefore, the number is generally preferably 1 to 6. Referring to fig. 20, 22 and 23, the number of the first and

second check profiles

1061 and 1051 is 4, and the 4 first check profiles 1061 and the 4 second check profiles 1051 are correspondingly engaged. Of course, in some embodiments, for convenience of manufacturing, only two first limiting profiles 1061 and two second limiting profiles 1051 may be provided, so that during machining, only one turn-milling for alignment is required to complete the machining, and the machining and manufacturing are very convenient.

In addition, in the matching of the first limiting profiles 1061 and the second limiting profiles 1051, no matter how many the first limiting profiles 1061 and the second limiting profiles 1051 are, as long as there is one first limiting profile 1061 and one second limiting profile 1051 matched with each other, the plug housing 105 and the ferrule 106 can be axially limited, that is, even if there are a plurality of first limiting profiles 1061 and a plurality of second limiting profiles 1051, the plurality of first limiting profiles 1061 and the plurality of second limiting profiles 1051 are not required to be in one-to-one correspondence, for example, referring to fig. 21, there are 4 first limiting profiles 1061 provided on the ferrule 106, and two second limiting profiles 1051 provided on the plug housing 105, and the final matching structure is that two second limiting profiles 1051 are matched with two first limiting profiles 1061 and two first limiting profiles 1061 are left empty.

In some embodiments, as shown in fig. 24, an elastic member 102 is disposed between the crimp assembly 107 and the ferrule 106, and the elastic member 102 is used for elastically maintaining the spacing between the crimp assembly 107 and the ferrule 106.

The elastic member 102 is disposed between the crimping assembly and the ferrule 106, and referring to fig. 24, when the distance between the crimping assembly 107 and the ferrule 106 is reduced, the elastic member 102 is compressed, and is elastically deformed, so as to generate an elastic force, which tries to push the crimping assembly 107 and the ferrule 106 to both sides, i.e., the elastic member 102 elastically maintains the distance between the crimping assembly 107 and the ferrule 106.

Therefore, in cooperation with the scheme that the crimping component 107 is in threaded connection with the plug housing 105, referring to fig. 1 and 24, when the plug housing 105 is plugged into the optical fiber adapter 200, the plug housing 105 drives the crimping component 107 to move towards the plugging direction, so that the distance between the crimping component 107 and the ferrule 106 is compressed to a certain extent, and further, the elastic element 102 deforms elastically, so that a force in the direction opposite to the plugging direction of the optical fiber plug 100 is applied to the plug housing 105. That is, the optical fiber plug 100 has an elastic member 102 therein, and the elastic member 102 is used to apply a force to the optical fiber plug 100 in a direction opposite to the plugging direction of the optical fiber plug 100. The force provided by the elastic member 102 disposed in the optical fiber plug 100 can make the first stop surface 1011 and the second stop surface 2023 fit more tightly.

In addition, the elastic element 102 disposed in the optical fiber plug 100 can be conveniently inserted and unlocked by matching with the feature that the first stop surface 1011 and the second stop surface 2023 are inclined with the moving direction of the stopper 202.

Specifically, referring to fig. 10 and 13, when the fiber optic plug 100 is plugged into the fiber optic adapter 200, the elastic member 102 applies a force to the fiber optic plug 100 in a direction opposite to the plugging direction of the fiber optic plug 100, so that the first stop surface 1011 and the second stop surface 2023 are always in contact with each other and are prevented from being disengaged;

referring to fig. 14 and 15, in conjunction with the arrangement of the elastic member 102 shown in fig. 10, when the stopper 202 moves from the second position to the first position, the first stop surface 1011 and the second stop surface 2023 are engaged, so that the boss 101 is pushed forward a distance toward the plug insertion direction, and at this time, the deformation of the elastic member 102 is larger, such that a force applied to the fiber optic plug 100 in a direction opposite to the plugging direction of the fiber optic plug 100 is increased, furthermore, finally, after the stopper 202 moves to the first position, the elastic member 102 gives a large elastic force to the boss 101, so that the boss 101 can be disengaged from the escape opening 2021, that is, without the worker's hand pulling out the optical fiber plug 100, the optical fiber plug 100 can be ejected by the elastic force provided by the elastic member 102, thus, the optical fiber plug 100 and the optical fiber adapter 200 can be disassembled and unlocked by one hand, and the field construction operation of workers is convenient.

The elastic member 102 may apply a force to the optical fiber plug 100 in a direction opposite to the plugging direction of the optical fiber plug 100, and the application of the force may be performed in a compressed state or a stretched state, wherein the stretched state has a large deformation occupying space and is not easy to be implemented, and therefore, when the boss 101 passes through the avoiding opening 2021, the elastic member 102 may be set in a compressed state to apply a force to the boss 101 in a direction opposite to the plugging direction of the optical fiber plug 100. Specifically, as shown in fig. 10, the elastic member 102 is located in front of the boss 101 in the plugging direction of the optical fiber plug 100, and when the boss 101 passes over the escape opening 2021, the elastic member 102 is in a compressed state to apply a force to the boss 101 in a direction opposite to the plugging direction of the optical fiber plug 100.

During use of the optical fiber 300, the optical fiber 300 is subjected not only to tensile force in the axial direction but also to rotational force in the circumferential direction thereof.

After the protrusion 101 passes the avoiding opening 2021, the stopper 202 is located at the second position, so that the fiber optic plug 100 and the fiber optic adapter 200 can be plugged, and at this time, the protrusion 101 is limited to one side of the stopper 202, so as to prevent the fiber optic plug 100 and the fiber optic adapter 200 from moving relatively along the axial direction of the optical fiber.

In order to prevent the optical fiber plug 100 and the optical fiber adapter 200 from rotating relative to each other along the circumferential direction of the optical fiber, a receiving groove 205 may be disposed on the optical fiber adapter 200 corresponding to the boss 101, and when the stopper 202 moves to the second position and the boss 101 is located in the receiving groove 205, the rotation of the optical fiber plug 100 and the optical fiber adapter 200 along the circumferential direction may be limited.

The scheme realizes multiple positioning by utilizing the structure of the boss 101, and not only limits the relative movement of the optical fiber plug 100 and the optical fiber adapter 200 along the axial direction of the optical fiber, but also limits the relative rotation of the optical fiber plug 100 and the optical fiber adapter 200 along the circumferential direction of the optical fiber.

The stopper 202 can move on the fiber optic adapter 200 along the radial direction of the optical fiber and can move to the first position or the second position, in order to prevent the stopper 202 from coming off from the fiber optic adapter 200 during the movement, referring to fig. 25, a limit groove 2024 is provided on one side of the stopper 202 facing the installation cavity 201, referring to fig. 8, a limit protrusion 2011 is provided on the installation cavity 201 of the fiber optic adapter 200 corresponding to the limit groove 2024, and the limit protrusion 2011 is matched with the limit groove 2024 to prevent the stopper 202 from coming off from the fiber optic adapter 200.

The stopper 202 is provided with a limiting groove 2024, the inner wall of the installation cavity 201 of the optical fiber adapter 200 is provided with a limiting protrusion 2011 corresponding to the limiting groove 2024, and when the stopper 202 moves on the optical fiber adapter 200 along the radial direction of the optical fiber 300, the limiting protrusion 2011 always slides in the limiting groove 2024 in a matching manner, so that the stopper 202 can be prevented from being disengaged from the optical fiber adapter 200.

It should be noted that, for convenience of installation and removal, the limit protrusion 2011 may be a movable component. In addition, the positions of the limiting groove 2024 and the limiting protrusion 2011 can be interchanged, that is, the limiting protrusion 2011 can be disposed on the stopper 202, and the limiting groove 2024 can be disposed on the inner wall of the installation cavity 201 of the fiber optic adapter 200 at the position corresponding to the limiting protrusion 2011.

In order to further ensure the connection reliability of the fiber optic plug 100 and the fiber optic adapter 200, a plurality of sets of bosses 101 and stoppers 202 may be disposed between the fiber optic plug 100 and the fiber optic adapter 200.

For example, two bosses 101 are provided on the optical fiber plug 100, and referring to fig. 25, the stopper 202 includes two bars 2025, and the two bars 2025 correspond to the two bosses 101 one by one, and each bar 2025 is also provided with an escape opening 2021 correspondingly. Thus, when the optical fiber plug 100 and the optical fiber adapter 200 are plugged, the two bosses 101 respectively pass through one of the escape openings 2021 and are respectively matched with the two stop bars 2025 of the stop member 202, so that the optical fiber plug 100 and the optical fiber adapter 200 are limited in two positions, and the reliability is improved.

In addition, two bosses 101 are provided on diametrically opposite sides of the optical fiber plug 100 for uniform force.

In order to prevent the optical fiber plug 100 and the optical fiber adapter 200 from rotating relative to each other in the circumferential direction, the optical fiber plug 100 is configured with the boss 101, and the optical fiber adapter 200 is correspondingly provided with the receiving groove 205. Of course, instead of using the structure of the boss 101 on the fiber optic plug 100, a special second limiting structure may be provided at other positions between the fiber optic plug 100 and the fiber optic adapter 200 to limit the relative rotation of the fiber optic plug 100 and the fiber optic adapter 200 in the circumferential direction. For example, a second limiting structure extending in the radial direction is provided between the fiber optic plug 100 and the fiber optic adapter 200, and the second limiting structure is used for limiting the rotation of the fiber optic plug 100 and the fiber optic adapter 200 in the circumferential direction.

Referring to fig. 26 and 27, the second limiting structure includes a limiting notch 103 disposed on the optical fiber plug 100, and a limiting protrusion 2012 disposed in the installation cavity 201 of the optical fiber adapter 200, where the limiting protrusion 2012 extends along the radial direction of the optical fiber and is matched with and extends into the limiting notch 103. The relative rotation of the fiber optic plug 100 and the fiber optic adapter 200 along the circumferential direction can be limited by the radial extension of the limiting projection 2012 into the limiting notch 103. Of course, the positions of the limiting notch 103 and the limiting projection 2012 can be interchanged, for example, the limiting projection 2012 is disposed on the optical fiber plug 100, and the limiting notch 103 is disposed on the optical fiber adapter 200.

The spacing bumps 2012 and the spacing gaps 103 can be in multiple groups to improve the reliability of spacing.

In some embodiments, as shown in fig. 26 and 27, two limiting notches 103 are respectively located on two opposite sides of the optical fiber plug 100 in the radial direction, and two limiting protrusions 2012 are respectively located on the two sides of the optical fiber plug and correspond to the two limiting notches 103 in a one-to-one manner. Like this, the cooperation of a plurality of spacing lugs 2012 and spacing breach 103 makes the reliability of preventing the relative rotation of optical fiber plug 100 and optical fiber adapter 200 along circumference higher, and in addition, two spacing breachs 103 are located the radial relative both sides of optical fiber plug 100 respectively, can guarantee that the atress is even, are favorable to structure setting and extension structure life.

During field construction, the optical fiber 300 is threaded together with the optical fiber plug 100, and for facilitating the threading, referring to fig. 5 and 6, the outer edge of the optical fiber plug 100 is provided with a connecting structure 104, the connecting structure 104 is used for connecting a pulling member 400, and one end of the pulling member 400 far away from the optical fiber plug 100 is provided with a pulling hole 401.

Due to the arrangement of the connection structure 104 on the outer edge of the optical fiber plug 100, the connection structure 104 can be connected with the pulling member 400, and the optical fiber with the optical fiber plug 100 can be threaded through the pulling member 400.

Of course, in order to prevent the pulling member 400 or the optical fiber plug 100 from bending in the conduit, the pulling hole 401 of the pulling member 400 is disposed at an end far away from the optical fiber plug 100, that is, the pulling hole 401 is disposed at the foremost end of the structure composed of the optical fiber 300, the optical fiber plug 100 and the pulling member 400, and the pulling hole 401 is pulled to conveniently pass through the conduit with the whole optical fiber.

The connection structure 104 may be a plurality of structures that can be easily disassembled, such as a clamping structure and a threaded connection structure 104, in order to ensure the connection strength and prevent the connection from being disconnected during the threading process, the connection structure 104 is a threaded structure disposed on the optical fiber plug 100, that is, the traction member 400 is detachably connected with the optical fiber plug 100 through the threaded structure, so as to ensure the connection strength.

Meanwhile, in the process of tube penetration, the traction piece 400 is behind the front optical fiber plug 100, so that as shown in fig. 5 and 6, the optical fiber plug 100 is provided with an external thread structure, and correspondingly, the traction piece 400 is provided with an internal thread structure, so that after the traction piece 400 is connected with the optical fiber plug 100, the shell of the traction piece 400 is outside, and the connection position of the two is behind the tube penetration direction, and the phenomenon of blocking cannot occur.

The optical fiber plug 100 is internally provided with an optical fiber 300, generally, as shown in fig. 1, the optical fiber plug 100 at least comprises a plug housing 105 for connecting with the optical fiber adapter 200, and a ferrule 106 for connecting with the optical fiber 300, wherein the ferrule 106 is positioned in the plug housing 105.

The fiber optic adapter 200 may generally comprise two parts, and as shown in fig. 1, the fiber optic adapter 200 may be divided into a first adapter portion 206 and a second adapter portion 207, wherein the first adapter portion 206 is the portion that mates with the fiber optic plug 100 and the second adapter portion 207 is the portion that mates with a fiber optic device interface (e.g., an optical module).

The second adapter portion 207 is configured to be adaptable to various types of interfaces, for example, referring to fig. 1, the second adapter portion 207 may be adaptable to sc (square connector) fiber optic connectors, or lc (lucent connector) and fc (ferrule connector) fiber optic connectors, and the like.

For another example, referring to fig. 28, the second adapter portion 207 may be configured to have the same structure as the first adapter portion 206, and may participate in soldering or the like to directly connect two optical fiber connectors.

The embodiment of the present application further provides an optical fiber plug 100, as shown in fig. 1 and fig. 6, the optical fiber plug 100 includes:

a plug housing 105;

a ferrule 106 provided inside the plug housing 105, the ferrule 106 being connected to the core of the optical fiber 300;

a crimp assembly 107, a first end of the crimp assembly 107 being coupled to the optical fiber 300 housing, a second end of the crimp assembly 107 being threadably coupled to the plug housing 105; a first end of the plug housing 105 is connected to the crimp assembly 107, a second end of the plug housing 105 is adapted to mate with the fiber optic adapter 200, and a protrusion 101 extends from an outer surface of a sidewall of the plug housing 105 adjacent the second end in a radial direction of the optical fibers, the protrusion 101 being adapted to mate with a corresponding structure on the fiber optic adapter 200 to connect the plug housing 105 to the fiber optic adapter 200.

In the optical fiber plug 100 provided by the embodiment of the present application, referring to fig. 1, the ferrule 106 is disposed inside the plug housing 105 and connected to the core of the optical fiber 300; a first end of the crimp assembly 107 is coupled to the housing of the optical fiber 300 and a second end of the crimp assembly 107 is threadably coupled to the plug housing 105 to form the optical fiber plug 100. Referring to fig. 1, 2 and 6, since the outer surface of the sidewall of the plug housing 105 near the second end extends along the radial direction of the optical fiber 300 to form a boss 101, and the boss 101 is configured to be in fit connection with a corresponding structure on the optical fiber adapter 200, when the optical fiber is in the home, a worker can firstly insert the optical fiber connected with the optical fiber plug 100 into the tube on the site, and only insert the optical fiber plug 100 into the tube along with the optical fiber, so that smooth tube insertion and easy operation can be ensured.

After the pipe penetration is completed, the optical fiber plug 100 can be conveniently inserted into the optical fiber adapter 200 through the boss 101, so that the optical fiber can be connected to corresponding indoor equipment, and the optical fiber can enter the home.

Therefore, the optical fiber plug 100 and the optical fiber adapter 200 can be conveniently and detachably connected, so that the operation and installation after the pipe penetrating in the field are very convenient, and the problem of complex assembling process before and after the threading in the construction field can be solved.

The boss 101 is used for mating connection with a corresponding structure on the fiber optic adapter 200, wherein the corresponding structure on the fiber optic adapter 200 may be a stopper 202 provided on the fiber optic adapter 200 and an escape opening 2021 provided on the stopper 202, as shown in fig. 13 and 25.

To facilitate the mating connection of the boss 101 and the corresponding structure of the fiber optic adapter 200, referring to fig. 11, 12 and 13, a sidewall of the boss 101 extending along the plugging direction of the fiber optic plug 100 has a first guiding surface 2041, and the first guiding surface 2041 is used to guide the boss 101 to be mated with the corresponding structure of the fiber optic adapter 200.

Due to the first guiding surface 2041 provided on one side wall of the boss 101, when the fiber optic plug 100 is plugged into the fiber optic adapter 200, the first guiding surface 2041 can guide the guiding boss 101 to be connected with a corresponding structure on the fiber optic adapter 200 in a matching manner.

The corresponding structure on the fiber optic adapter 200 that mates with the first guide surface 2041 may be the second guide surface 2042 of the fiber optic adapter 200 as shown in fig. 11, 12 and 13.

The connection between the fiber optic plug 100 and the fiber optic adapter 200 is achieved by the first stop surface 1011 of the boss 101 mating with a corresponding structure of the fiber optic adapter 200. Specifically, as shown in fig. 13, a first stop surface 1011 is disposed on a side wall of the boss 101 away from the second end of the optical fiber plug 100, and the first stop surface 1011 is used for cooperating with a corresponding structure on the optical fiber adapter 200, so as to connect the optical fiber plug 100 and the optical fiber adapter 200.

The corresponding structure on the fiber optic adapter 200 that mates with the first stop 1011 may be a second stop 2023 provided on the fiber optic adapter 200 as shown in fig. 13.

In some embodiments, referring to fig. 13, the first stop surface 1011 may be at an acute angle or parallel to the radial direction of the optical fiber 300. Of course, referring to fig. 1, after the corresponding fiber optic adapter 200 is provided with the stoppers 202, since the first stopping surface 1011 is engaged with the stoppers 202, the setting angle of the first stopping surface 1011 can be determined with reference to the moving direction of the stoppers 202. Referring to fig. 13, the first stop surface 1011 forms an acute angle or is parallel to the direction of the stopper 202 moving from the second position to the first position. The first stop surface 1011 may be disposed along a direction in which the stopper 202 moves from the second position to the first position, that is, the first stop surface 1011 is disposed in parallel with a radial direction of the optical fiber 300, or may be disposed at an acute angle with the direction in which the stopper 202 moves from the second position to the first position, wherein the first stop surface 1011 is disposed in parallel with the radial direction of the optical fiber 300, and when the first stop surface 1011 is subjected to a force, a reaction force is directly directed to an axial direction of the optical fiber 300, and a loss of the force is small; the first stop surface 1011 and the stop member 202 are disposed at an acute angle in the direction from the second position to the first position, so that after the optical fiber plug 100 and the optical fiber adapter 200 are connected, the optical fiber plug 100 has a force moving toward the end inclined to the first stop surface 1011, and thus, by using this characteristic, the connection between the optical fiber plug 100 and the optical fiber adapter 200 is more tight and is less likely to be disengaged.

profiles

The first and

second retention profiles

stop mating surfaces

For ease of manufacture, referring to fig. 1, 22 and 24, the plug housing 105 has a tail portion at one end adjacent the optical fiber 300 and a head portion at the other end; the first stop mating surface 1062 is disposed on a side of the first stop profile 1061 near the tail of the plug member 106; the second stop mating surface 1052 is disposed on a side of the second stop profile 1051 adjacent the first end of the plug housing 105.

Of course, the first and

second stop profiles

Therefore, in cooperation with the scheme that the crimping component 107 is in threaded connection with the plug housing 105, referring to fig. 1 and 24, when the plug housing 105 is plugged into the optical fiber adapter 200, the plug housing 105 drives the crimping component 107 to move towards the plugging direction, so that the distance between the crimping component 107 and the ferrule 106 is compressed to a certain extent, and further, the elastic element 102 deforms elastically, so that a force in the direction opposite to the plugging direction of the optical fiber plug 100 is applied to the plug housing 105. That is, the optical fiber plug 100 has an elastic member 102 therein, and the elastic member 102 is used to apply a force to the optical fiber plug 100 in a direction opposite to the plugging direction of the optical fiber plug 100. Referring to fig. 13, after the optical fiber plug 100 is connected to the optical fiber adapter 200, the elastic member 102 disposed in the optical fiber plug 100 applies a force to the optical fiber plug 100 in a direction opposite to the insertion direction of the optical fiber plug 100, so that the boss 101 and the optical fiber adapter 200 are connected to each other in a corresponding manner, thereby ensuring a stable connection state.

In addition, when the first stop surface 1011 is provided, the pretightening force provided by the elastic element 102 can make the first stop surface 1011 fit with the corresponding structure more tightly.

The boss 101 is used for connecting the optical fiber plug 100 and the optical fiber adapter 200, ensures that the optical fiber plug 100 and the optical fiber adapter 200 are in a plug-in state, can prevent relative displacement along the axial direction of the optical fiber, and the optical fiber 300 can not only receive axial tensile force but also receive circumferential rotating force during the use process of the optical fiber 300.

In order to prevent the circumferential rotation force applied to the optical fiber from affecting the plugging state of the optical fiber plug 100 and the optical fiber adapter 200, as shown in fig. 27, a limiting notch 103 is provided on the optical fiber plug 100, and the limiting notch 103 is used for matching with a corresponding structure of the optical fiber adapter 200 to limit the rotation of the optical fiber plug 100 and the optical fiber adapter 200 along the circumferential direction.

The optical fiber plug 100 is provided with the limiting notch 103, the limiting notch 103 can be matched with the corresponding structure of the optical fiber adapter 200, the rotation of the optical fiber plug 100 and the optical fiber adapter 200 along the circumferential direction can be limited, namely, the insertion state of the optical fiber plug 100 and the optical fiber adapter 200 can be prevented from being influenced by the circumferential rotating force applied to the optical fiber.

The retention notch 103 is configured to mate with a corresponding structure of the fiber optic adapter 200, where the corresponding structure of the fiber optic adapter 200 may be a retention bump 2012 disposed on the fiber optic adapter 200 as shown in fig. 26, and the retention bump 2012 extends in a radial direction of the optical fiber and fits into the retention notch 103. The relative rotation of the fiber optic plug 100 and the fiber optic adapter 200 along the circumferential direction can be limited by the radial extension of the limiting projection 2012 into the limiting notch 103. Of course, the positions of the limiting notch 103 and the limiting projection 2012 can be interchanged, for example, the limiting projection 2012 is disposed on the optical fiber plug 100, and the limiting notch 103 is disposed on the optical fiber adapter 200.

Of course, in order to prevent the pulling member 400 or the optical fiber plug 100 from bending in the conduit, referring to fig. 5 and 6, the pulling hole 401 of the pulling member 400 is disposed at an end away from the optical fiber plug 100, that is, the pulling hole 401 is disposed at the foremost end of the structure formed by the optical fiber 300, the optical fiber plug 100 and the pulling member 400, and the pulling hole 401 is pulled to conveniently pass through the conduit with the whole optical fiber.

Meanwhile, in the process of pipe penetration, the traction piece 400 is arranged behind the front optical fiber plug 100, so that the optical fiber plug 100 is provided with an external thread structure, and correspondingly, the traction piece 400 is provided with an internal thread structure, so that after the traction piece 400 is connected with the optical fiber plug 100, the shell of the traction piece 400 is arranged outside, and the connection position of the traction piece 400 and the optical fiber plug is arranged behind the pipe penetration direction, and the phenomenon of clamping cannot occur.

The embodiment of the present application further provides a fiber optic adapter 200, as shown in fig. 1 and fig. 2, a first end of the fiber optic adapter 200 is used for plugging the fiber optic plug 100, a second end of the fiber optic adapter 200 is used for adapting to a fiber optic equipment interface, the first end of the fiber optic adapter 200 has an installation cavity 201, one end of the fiber optic plug 100 extends into the installation cavity 201, the fiber optic adapter 200 is provided with a stopper 202 moving along a radial direction of the optical fiber 300, referring to fig. 13 and fig. 25, the stopper 202 has an avoiding opening 2021, and the avoiding opening 2021 enables a corresponding structure of the fiber optic plug 100 to pass through.

When the stopper 202 moves to the first position, referring to fig. 15, the avoiding opening 2021 is opposite to the corresponding structure of the optical fiber plug 100; when the stop 202 moves to the second position, referring to fig. 13, the escape opening 2021 is misaligned with the corresponding structure of the fiber optic plug 100.

Referring to fig. 1 and 2, in the optical fiber adapter 200 provided in the embodiment of the present application, since the stopper 202 moving along the radial direction of the optical fiber is disposed on the optical fiber adapter 200, and referring to fig. 15 and 25, the stopper 202 has the escape opening 2021, and the escape opening 2021 can allow the corresponding structure of the optical fiber plug 100 to pass through.

Thus, referring to fig. 11, when the optical fiber plug 100 extends into the installation cavity 201, at this time, a worker may move the stopper 202 to the first position, and the avoiding opening 2021 is opposite to the corresponding structure of the optical fiber plug 100, at this time, referring to fig. 12, the corresponding structure of the optical fiber plug 100 passes over the avoiding opening 2021, and then, the worker may move the stopper 202 to the second position, so that the avoiding opening 2021 is opposite to the corresponding structure of the optical fiber plug 100, referring to fig. 13, and then the stopper 202 stops the corresponding structure of the optical fiber plug 100 at one side, so that the optical fiber plug 100 cannot be pulled out, thereby achieving the purpose of plugging.

When disassembly is required, referring to fig. 14, the worker can move the stopper 202 to the first position again, the avoiding opening 2021 is opposite to the corresponding structure of the optical fiber plug 100, and at this time, referring to fig. 15, the corresponding structure of the optical fiber plug 100 is moved over the avoiding opening 2021, so that the optical fiber plug 100 is pulled out from the installation cavity 201 of the optical fiber adapter 200, and the disassembly is realized.

Referring to fig. 12 or fig. 15, when the stopper 202 moves to the first position, the avoiding opening 2021 is aligned with the corresponding structure of the optical fiber plug 100, where the relative position is that the avoiding opening 2021 and the corresponding structure of the optical fiber plug 100 are exactly aligned in the direction in which the optical fiber plug is plugged, so that the corresponding structure of the optical fiber plug 100 can pass through the avoiding opening 2021; it is also understood that both sidewalls of the corresponding structure of the fiber optic plug 100 extending axially along the optical fiber 300 are within the opening of the relief opening 2021; it can also be understood that the projection of the corresponding structure of the optical fiber plug 100 toward the escape opening 2021 falls within the opening range of the escape opening 2021.

When the stop 202 moves to the second position, referring to fig. 13, the escape opening 2021 is misaligned with the corresponding structure of the fiber optic plug 100. The phase dislocation means that the avoiding opening 2021 and the corresponding structure of the optical fiber plug 100 are just dislocated in the direction of inserting the optical fiber plug, so that the corresponding structure of the optical fiber plug 100 cannot cross the avoiding opening 2021; it can also be understood that at least one of the two sidewalls of the corresponding structure of the optical fiber plug 100 extending in the axial direction of the optical fiber 300 is not within the opening range of the avoiding opening 2021; it is also understood that the projection of the corresponding structure of the fiber optic plug 100 toward the access opening 2021 does not fall completely within the opening of the access opening 2021.

To facilitate the mating connection of the stopper 202 with the corresponding structure of the fiber optic plug 100, as shown in fig. 11 and 12, a sidewall of the escape opening 2021 extending along the plugging direction of the fiber optic plug 100 has a second guiding surface 2042, and the second guiding surface 2042 is used for guiding the corresponding structure of the fiber optic plug 100 to mate with the stopper 202.

A second guiding surface 2042 is disposed on a side wall of the avoiding opening 2021 of the stopper 202, so that when the fiber optic plug 100 is plugged into the fiber optic adapter 200, the second guiding surface 2042 can guide a corresponding structure on the guided fiber optic plug 100 to cooperate with the avoiding opening 2021 of the stopper 202, and finally pass through the avoiding opening 2021 to cooperate and clamp with the stopper 202.

It should be noted that the second guiding surface 2042 may guide a corresponding structure on the guided fiber optic plug 100, and may be the first guiding surface 2041 shown in fig. 11 and 12.

In some embodiments, as shown in fig. 13, the sidewall of the stop 202 away from the first end of the fiber optic adapter 200 is provided with a second stop 2023, and the second stop 2023 is configured to mate with a corresponding structure on the fiber optic plug 100 to connect the fiber optic plug 100 and the fiber optic adapter 200.

Referring to fig. 13, the corresponding structure of the second stop surface 2023 for mating with the optical fiber plug 100 may be the first stop surface 1011.

When the fiber optic plug 100 is connected to the fiber optic adapter 200, the stopper 202 is engaged with a corresponding structure of the fiber optic plug 100, and the second stopper 2023 disposed on the sidewall of the stopper 202 away from the first end of the fiber optic adapter 200 serves as an active surface to prevent the fiber optic plug 100 from being pulled out.

In some embodiments, the second stop 2023 is at an acute angle or parallel to the direction of movement of the flight 202 from the second position to the first position. The second stop surface 2023 can be disposed along the direction of movement of the flight 202, i.e., the second stop surface 1023 is parallel to the direction of movement of the flight 202 from the second position to the first position; or an acute angle may be formed between the second stop face 2023 and the first stop face 202 in the direction from the second position to the first position, wherein the second stop face 2023 is parallel to the direction from the second position to the first position, when the second stop face 2023 is stressed, the reaction force is directly directed to the axial direction of the optical fiber 300, the loss of force is small, and when the stop member 202 moves, the matching friction force between the second stop face 2023 and other structures is small, so that the stop member 202 moves more smoothly, and the user operation is labor-saving and smooth; the second stop surface 2023 and the stopper 202 are disposed at an acute angle in the direction from the second position to the first position, so that after the optical fiber plug 100 and the optical fiber adapter 200 are connected, the optical fiber plug 100 has a force moving toward the end inclined toward the second stop surface 2023, and thus, by using this characteristic, the connection between the optical fiber plug 100 and the optical fiber adapter 200 is more locked and more tight, and the optical fiber plug is not easily disengaged.

The stopper 202 can move on the fiber optic adapter 200 along the radial direction of the optical fiber and can move to the first position or the second position, in order to prevent the stopper 202 from coming off from the fiber optic adapter 200 during the movement, referring to fig. 25, a limit groove 2024 is provided on one side of the stopper 202 facing the installation cavity 201, referring to fig. 8, a limit protrusion 2011 is provided on the inner wall of the installation cavity 201 of the fiber optic adapter 200 corresponding to the limit groove 2024, and the limit protrusion 2011 slidably cooperates with the limit groove 2024 to prevent the stopper 202 from coming off from the fiber optic adapter 200.

The stopper 202 is provided with a limiting groove 2024, the inner wall of the installation cavity 201 of the optical fiber adapter 200 is provided with a limiting protrusion 2011 corresponding to the limiting groove 2024, and when the stopper 202 moves on the optical fiber adapter 200 along the radial direction of the optical fiber, the limiting protrusion 2011 is always matched and slides in the limiting groove 2024, so that the stopper 202 can be prevented from being disengaged from the optical fiber adapter 200.

In order to prevent the circumferential rotation force applied to the optical fiber from affecting the plugging state of the optical fiber plug 100 and the optical fiber adapter 200, as shown in fig. 26, a limiting protrusion 2012 is disposed in the installation cavity 201 of the optical fiber adapter 200, the limiting protrusion 2012 extends along the radial direction of the optical fiber 300, and the limiting protrusion 2012 is used for being matched with a corresponding structure of the optical fiber plug 100 to limit the relative rotation between the optical fiber plug 100 and the optical fiber adapter 200 along the circumferential direction.

It should be noted that the corresponding structure of the stop protrusion 2012 mating with the fiber optic plug 100 may be the stop notch 103 shown in fig. 27.

Be equipped with spacing lug 2012 in optical fiber adapter 200's installation cavity 201, spacing lug 2012 can cooperate with the corresponding structure of optical fiber plug 100, can spacing optical fiber plug 100 and optical fiber adapter 200 along the rotation of circumference, promptly, can prevent that the circumference revolving force that the optic fibre received from influencing the grafting state of optical fiber plug 100 and optical fiber adapter 200.

The embodiment of the present application further provides an optical fiber ferrule module, referring to fig. 1, for fixing an optical fiber 300 in an optical fiber plug 100, including:

a plug housing 105;

an anti-rotation structure is arranged between the plug housing 105 and the ferrule 106, and referring to fig. 17, 18, 19 and 22, the anti-rotation structure comprises a first limiting profile 1061 arranged on the radial outer surface of the ferrule 106 and a second limiting profile 1051 arranged inside the plug housing 105, and the first limiting profile 1061 and the second limiting profile 1051 are in contact fit to limit the relative rotation of the plug housing 105 and the ferrule 106.

profiles

The first and

second retention profiles

stop mating surfaces

Of course, the first and

second stop profiles

second check profiles

In addition, in the matching of the first limiting profiles 1061 and the second limiting profiles 1051, no matter how many the first limiting profiles 1061 and the second limiting profiles 1051 are, as long as there is one first limiting profile 1061 and one second limiting profile 1051 matched with each other, the plug housing 105 and the ferrule 106 can prevent rotation in the circumferential direction, i.e. even if there are a plurality of first limiting profiles 1061 and a plurality of second limiting profiles 1051, and the plurality of first limiting profiles 1061 and the plurality of second limiting profiles 1051 are not required to correspond to each other, for example, referring to fig. 21, there are 4 first limiting profiles 1061 provided on the ferrule 106, and two second limiting profiles 1051 provided on the plug housing 105, the final matched structure is that two second limiting profiles 1051 are matched with two first limiting profiles 1061, and two first limiting profiles 1061 are left empty. In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims

1. An optical fiber ferrule module for securing an optical fiber within an optical fiber plug, comprising:

a plug housing;

the core inserting piece is arranged inside the plug shell and is connected with the core of the optical fiber;

plug housing with be equipped with anti-rotating structure between the insertion core spare, anti-rotating structure is including setting up the first spacing profile of inserting the radial surface of insertion core spare, and set up the spacing profile of the inside second of plug housing, first spacing profile with the spacing profile contact cooperation of second, with spacing plug housing with the relative rotation of insertion core spare.

2. The fiber ferrule module according to claim 1, wherein the core member is connected to the core of the optical fiber at one end thereof with a tail portion and at the other end thereof with a head portion;

plug housing with be equipped with first limit structure between the insert core spare, first limit structure is including setting up the first fitting surface that blocks of the surface of inserting the core spare, and set up and be in the inside second of plug housing blocks the fitting surface, first the fitting surface that blocks with the second blocks the fitting surface and follows the axial projection of optic fibre has the overlap, works as insert the core spare and stretch into in the plug housing, just first spacing profile with behind the contact cooperation of first spacing profile, first the fitting surface that blocks with the fitting surface cooperation is blocked to the second, is used for preventing insert core spare orientation the motion of the direction of the head of inserting the core spare.

3. The fiber ferrule module of claim 2, wherein the plug housing has a tail portion at one end adjacent the optical fiber and a head portion at the other end;

the first stopping matching surface is arranged on one side, close to the tail part of the core inserting piece, of the first limiting profile; the second blocking matching surface is arranged on one side, close to the tail part of the plug shell, of the second limiting molded surface.

4. The fiber ferrule module according to any one of claims 1 to 3, wherein a radially outer surface of the ferrule member is recessed toward an inside of the ferrule member to form the first limit profile; the radially inner surface of the plug outer housing projects toward the central axis of the plug member to form the second retention profile.

5. The optical fiber ferrule module according to any one of claims 1 to 4, wherein the first limiting profiles are distributed along the circumferential direction of the ferrule member, the second limiting profiles are distributed along the circumferential direction of the ferrule member, and the second limiting profiles are matched with the first limiting profiles in a one-to-one correspondence manner.

6. A fiber optic plug, comprising:

a plug housing;

a crimp assembly having a first end connected to the fiber optic housing and a second end threadedly connected to the plug housing;

the first end of the plug shell is connected with the crimping component, the second end of the plug shell is used for being connected with the optical fiber adapter in an inserting mode, a boss is arranged on the outer surface of the side wall, close to the second end, of the plug shell and extends along the radial direction of the optical fiber, and the boss is used for being matched and connected with a corresponding structure on the optical fiber adapter, so that the plug shell is connected with the optical fiber adapter.

7. The fiber optic plug of claim 6, wherein a sidewall of the boss extending in the fiber optic plug mating direction has a first guide surface for guiding the boss into mating connection with a corresponding structure on the fiber optic adapter.

8. The fiber optic plug of claims 6 or 7, wherein a sidewall of the boss distal from the second end of the fiber optic plug is provided with a first stop surface for mating with a corresponding structure on the fiber optic adapter to connect the fiber optic plug and the fiber optic adapter.

9. The fiber optic plug of claim 8, wherein the first stop surface is at an acute angle or parallel to a radial direction of the optical fiber.

10. The optical fiber plug according to any one of claims 6 to 9, wherein an anti-rotation structure is provided between the plug housing and the ferrule member, the anti-rotation structure comprises a first limiting profile provided on a radial outer surface of the ferrule member and a second limiting profile provided inside the plug housing, and the first limiting profile and the second limiting profile are in contact fit to limit relative rotation of the plug housing and the ferrule member.

11. The fiber optic plug of claim 10, wherein the core member is coupled to the core of the optical fiber at one end by a tail portion and at the other end by a head portion;

12. The fiber optic plug of claim 11, wherein the first stop mating surface is disposed on a side of the first retention profile proximate the tail portion of the core insert member; the second blocking matching surface is arranged on one side, close to the first end of the plug shell, of the second limiting molded surface.

13. The fiber optic plug according to any one of claims 10-12, wherein a radially outer surface of the core member is recessed toward an interior of the ferrule member to form the first retention profile; the radially inner surface of the plug outer housing projects toward the central axis of the plug member to form the second retention profile.

14. The optical fiber plug according to any one of claims 10 to 13, wherein the first limiting profiles are plural, the plural first limiting profiles are distributed along the circumferential direction of the plug core member, the plural second limiting profiles are plural, and the plural second limiting profiles are matched with the plural first limiting profiles in a one-to-one correspondence manner.

15. The fiber optic plug of claim 14, wherein a spring is disposed between the crimp assembly and the core insert member, the spring configured to resiliently maintain a spacing between the crimp assembly and the core insert member.

16. The optical fiber plug according to any one of claims 6 to 15, wherein a limiting notch is provided on the optical fiber plug, and the limiting notch is used for matching with a corresponding structure of the optical fiber adapter to limit the relative rotation of the optical fiber plug and the optical fiber adapter.

17. The optical fiber plug according to any one of claims 6 to 16, wherein an outer edge of the optical fiber plug is provided with a connecting structure for connecting a pulling member, and an end of the pulling member away from the optical fiber plug is provided with a pulling hole.

18. The fiber optic plug of claim 17, wherein the coupling structure is an external thread structure disposed on the fiber optic plug, and wherein the pulling member is removably coupled to the fiber optic plug via the external thread structure.

19. An optical fiber adapter is characterized in that the first end of the optical fiber adapter is provided with a mounting cavity, one end of the optical fiber plug extends into the mounting cavity, the optical fiber adapter is provided with a stopper moving along the radial direction of an optical fiber, the stopper is provided with an avoiding opening, the avoiding opening can enable a corresponding structure of the optical fiber plug to pass through, and when the stopper moves to a first position, the avoiding opening is opposite to the corresponding structure of the optical fiber plug; when the blocking piece moves to the second position, the avoiding opening is staggered with the corresponding structure of the optical fiber plug.

20. The fiber optic adapter of claim 19, wherein a sidewall of the escape opening extending in the mating direction of the fiber optic plug has a second guide surface for guiding a corresponding structure of the fiber optic plug into mating engagement with the stop.

21. An adaptor according to claim 19 or 20, wherein a side wall of the stop remote from the first end of the adaptor is provided with a second stop surface for cooperating with a corresponding formation on the fibre optic plug to connect the fibre optic plug to the fibre optic adaptor.

22. An adaptor according to claim 21 wherein the second stop face is at an acute angle or parallel to the direction of movement of the stop from the second position to the first position.

23. The fiber optic adapter according to any one of claims 19-22, wherein a limiting groove is formed on a side of the stopper facing the mounting cavity, a limiting protrusion is formed on an inner wall of the mounting cavity of the fiber optic adapter corresponding to the limiting groove, and the limiting protrusion slidably engages with the limiting groove to prevent the stopper from being removed from the fiber optic adapter.

24. An adaptor according to any one of claims 19 to 23, wherein a stop lug is provided in the mounting cavity of the adaptor, the stop lug extending in the radial direction of the optical fibre, the stop lug being adapted to cooperate with a corresponding formation of the optical fibre plug to stop relative rotation of the optical fibre plug and the adaptor.

25. An optical fiber connector, comprising:

the fiber optic plug of any one of claims 6-18;

the fiber optic adapter of any one of claims 19-24;

the fiber optic plug includes a plug housing; the first end of the plug shell is used for being connected with an optical fiber, the second end of the plug shell is used for being inserted into an optical fiber adapter, a boss extends from the outer surface of the side wall of the plug shell close to the second end in the radial direction of the optical fiber, a blocking piece moving in the radial direction of the optical fiber is arranged on the optical fiber adapter, an avoiding opening allowing the boss to pass through is formed in the blocking piece, and when the blocking piece moves to the first position, the avoiding opening is opposite to the boss; when the blocking piece moves to the second position, the avoiding opening and the boss are staggered.

26. The fiber optic connector of claim 25, wherein a resilient member is disposed within the fiber optic adapter and abuts the stop for providing a restoring force for movement of the stop from the first position to the second position.

27. The fiber optic connector of claims 25 or 26, wherein an end of the stop is an operating end, the operating end being located outside of the fiber optic adapter, the stop moving from the second position to the first position when a force is applied to the operating end.

28. The optical fiber connector according to any one of claims 25 to 27, wherein when the second end of the plug extends into the optical fiber adapter, a first side wall of the boss extending along the plugging direction of the optical fiber plug is engaged with a second side wall of the avoiding opening extending along the plugging direction of the optical fiber plug, at least one of the first side wall and the second side wall is provided with a guiding surface, and the guiding surface is disposed at an acute angle with the plugging direction of the optical fiber plug.

29. The fiber optic connector of claim 28, wherein the guide surfaces include a first guide surface disposed on the first sidewall and a second guide surface disposed on the second sidewall.

30. The fiber optic connector of claim 29, wherein the first guide surface and the second guide surface are each disposed at an acute angle relative to a direction along which the fiber optic plug is mated.

31. The optical fiber connector according to any one of claims 25 to 30, wherein a front side wall of the boss extending in the direction in which the stopper is moved is provided with a first stopper surface, a rear side wall of the stopper extending in the direction in which the stopper is moved is provided with a second stopper surface, and when the boss passes through the avoidance opening, the first stopper surface and the second stopper surface are engaged with each other to prevent the boss from moving in a direction opposite to the direction in which the optical fiber plug is inserted.

32. The fiber optic connector of claim 31, wherein the first stop surface and the second stop surface are each at an acute angle to the direction of movement of the stop from the second position to the first position, and wherein a front end of the first stop surface and the second stop surface in the direction of movement of the stop from the second position to the first position is angled toward the first end of the fiber optic adapter.

33. The fiber optic connector of claims 31 or 32, wherein the first stop surface and the second stop surface are each at the same acute angle as the direction the stop moves from the second position to the first position.

34. The optical fiber connector according to any one of claims 31 to 33, wherein the first stop surface and the second stop surface are curved surfaces or flat surfaces.

35. The optical fiber connector according to any one of claims 31-34, wherein an elastic member is disposed in the optical fiber plug, and the elastic member is configured to apply a force to the optical fiber plug in a direction opposite to a plugging direction of the optical fiber plug.

36. The optical fiber connector according to any one of claims 25 to 35, wherein a receiving groove is formed on the optical fiber adapter corresponding to the boss, the stopper moves to the second position, and the boss is located in the receiving groove to limit the relative rotation between the optical fiber plug and the optical fiber adapter.

37. The optical fiber connector according to any one of claims 25 to 36, wherein there are two of the bosses, two of the bosses are disposed on two diametrically opposite sides of the optical fiber plug, the stopper includes two bars connected together, each of the bars is provided with one of the avoiding openings, and the two bars and the two avoiding openings are disposed in one-to-one correspondence with the two bosses.