CN117471627A - Optical fiber branching device - Google Patents

Abstract

The application relates to the technical field of optical fiber communication, and particularly provides an optical fiber branching device, which comprises an adapter module, wherein the adapter module comprises a mounting bracket, an outer connector and an inner connector, wherein the outer connector and the inner connector are arranged on two sides of the mounting bracket, the outer connector comprises a plurality of first plugging parts which are sequentially arranged, at least two adjacent first plugging parts share one side wall, the inner connector comprises a plurality of second plugging parts which are sequentially arranged, and the second plugging parts are communicated with the first plugging parts in a one-to-one correspondence manner; a beam splitter body; and the adapter module and the beam splitter body are both accommodated in the protective shell, and the outer connector is exposed outside the protective shell. The application provides an optical fiber branching device, highly integrated adapter module has effectively reduced the volume of adapter module, and then can be favorable to reducing the volume of whole optical fiber branching device.

Description

Optical fiber branching device

The present application claims priority from the chinese patent office, application number 202210862476.0, entitled "fiber optic splitter," filed 20, month 07, 2022, the entire contents of which are incorporated herein by reference.

Technical Field

The application relates to the technical field of optical fiber communication, in particular to an optical fiber branching device.

Background

With the popularity of fiber-to-the-home services, solutions to P2MP (Point 2Multiple Point, point-to-multipoint) fiber networking are increasingly used in the home scenario. When the optical fiber branching device enters a home interior scene, the volume requirement of the optical fiber branching device is high in order to keep coordination and attractive with the indoor home scene. However, the conventional optical fiber branching device has a large volume, complicated parts and complex assembly.

Disclosure of Invention

In view of this, the application proposes an optical fiber splitter, through the adapter module of high integration and integrated design, can be favorable to reducing the volume of whole optical fiber splitter, improves assembly efficiency.

The present application provides an optical fiber splitter including

The adapter module comprises a mounting bracket, an outer connector and an inner connector, wherein the outer connector and the inner connector are arranged on two sides of the mounting bracket, the outer connector comprises a plurality of first plug-in parts which are sequentially arranged, at least two adjacent first plug-in parts share one side wall, the inner connector comprises a plurality of second plug-in parts which are sequentially arranged, and the second plug-in parts are correspondingly communicated with the first plug-in parts one by one;

A beam splitter body; and

The adapter module and the beam splitter body are both accommodated in the protective shell, and the outer connector is exposed outside the protective shell.

In the above scheme, two adjacent first grafting portions in the outer connector of adapter module share a lateral wall, through the adapter module of high integration and integrated design, can effectively reduce the volume of adapter module, and then can be favorable to reducing whole fiber optic splitter's volume, expose the connector in the protecting crust outside and can make things convenient for the user to peg graft fiber optic connector.

In some embodiments, the inner connector further comprises a resilient locking clip located outside the second mating portion for locking the bare ferrule connector.

It will be appreciated that locking the bare ferrule connector using the resilient locking clip may improve the connection stability of the connector to the adapter module.

In some embodiments, the end of the resilient locking clip remote from the mounting bracket is provided with an inclined guide surface, and the inclined guide surfaces of the two resilient locking clips form a V-shaped opening.

Under the thrust action of a user, one end of the bare ferrule connector is abutted against the inclined guide surface of the elastic locking clamp and pushes the two elastic locking clamps to open towards two sides, and the ferrule of the bare ferrule connector is easier to insert into the second ferrule part between the two elastic locking clamps along the V-shaped opening, so that the bare ferrule connector is more labor-saving to assemble, and the position deviation is difficult to occur.

In some embodiments, the elastic locking clip is provided with a locking protrusion for locking a limit notch of a periphery of a ferrule base of the bare ferrule connector.

In the above scheme, the elastic locking clamp further fixes the bare ferrule connector, so that the bare ferrule connector is prevented from loosening or falling out of the second plug-in part of the inner connector. In some embodiments, a side wall of the second plug portion is provided with a slot extending from an open end of the second plug portion to a side proximate the mounting bracket.

In the above-mentioned scheme, the fluting takes on the U type, and in other embodiments, the fluting also can be other shapes. The grooved setting can be favorable to ceramic sleeve in the adapter module to insert in the second insertion core portion, and when the installation, ceramic sleeve can make the lateral wall of second insertion core portion expand, conveniently pushes ceramic sleeve to improve light conduction efficiency, improve communication stability.

In some embodiments, the first plugging portion includes a plugging portion and a plugging frame located outside the plugging portion, two adjacent plugging frames share one side wall, and an end wall of the plugging frame is provided with a key groove.

It can be appreciated that when the SC-type connector is inserted into the first plugging portion, the key groove on the plugging frame can play a foolproof role, and improve connection stability.

In some embodiments, the first mating portion is for mating with an SC-type connector and the second mating portion is for mating with a bare ferrule connector.

It can be understood that the first plug-in portion is designed to be a plug-in SC type connector, and the second plug-in portion is designed to be a plug-in bare core-insert connector, so that the plug-in connector can be conveniently plugged by a user, and the use convenience of the user is improved.

In some embodiments, the outer connector is the same or different structure than the inner connector.

In some embodiments, the protective shell comprises a shell body and a cover body which are detachably connected, and the shell body and the cover body are detachably connected with the mounting bracket respectively.

In the scheme, the mounting bracket of the adapter module is detachably connected with the shell and the cover body, so that quick assembly can be realized, and the assembly efficiency is improved.

In some embodiments, the two ends of the mounting bracket are respectively provided with a first clamping part and a second clamping part, the shell is provided with a first limiting groove and a second limiting groove, the first clamping part is clamped in the first limiting groove, and the second clamping part is clamped in the second limiting groove.

In the scheme, the adapter module is installed and fixed in the protective shell through the first clamping part and the second clamping part, so that the installation of the whole adapter module is convenient. The first and second engaging portions may have the same structure or may have different structures. For example, when the structures of the first clamping part and the second clamping part are different, the fool-proof function can be realized, and the reverse installation of the direction during installation is avoided. In some embodiments, the first clamping portion is a T-shaped post and the second clamping portion is a rectangular post.

In some embodiments, the mounting bracket is provided with a plurality of reinforcing ribs, a first hook extending towards the direction close to the shell is arranged on the inner side of the cover, a second hook extending towards the direction close to the cover is arranged on the inner side of the shell, and the first hook and the second hook are in clamping connection with the reinforcing ribs.

The setting of strengthening rib can further strengthen adapter module's installation stability, and the strengthening rib sets up along the extending direction interval of installing support, can also strengthen whole adapter module's bulk strength.

In some embodiments, the side wall of the shell is provided with a plurality of spacing ribs arranged at intervals, the edge of the cover body is provided with a plurality of buckling openings, and the buckling openings are matched and clamped with the spacing ribs.

It can be understood that the buckling opening is matched and clamped with the limit convex rib, the connection stability of the cover body and the shell is improved,

in some embodiments, a hook is further arranged on the inner side of the side wall of the shell, an engagement groove is formed in the cover body close to the inner wall of the shell, and the hook is clamped in the engagement groove.

Specifically, a hook is arranged on the inner side of the first side wall of the shell, and extends transversely and protrudes towards the top. Correspondingly, the inner wall of the cover body, which is close to the shell, is provided with the joint groove, the hook is clamped in the joint groove, the cover body can be better borne by the transversely extending part of the hook, the cover body can be better positioned by the protruding part of the hook, the cover body is prevented from being installed and misplaced, and the cover body can be prevented from being pried from the side surface.

In some embodiments, the optical fiber splitter further comprises a dust cap inserted within the first plug portion.

The dustproof cap is inserted in the first plug-in part of the outer connector, the material of the dustproof cap can be plastic, the shape of the dustproof cap is matched with the plug-in frame of the first plug-in part, and the first plug-in part exposed outside the protective shell can be effectively prevented from entering dust, so that the connection sensitivity of the outer connector is affected.

In some embodiments, the fiber optic splitter further comprises: the overturning shell is rotationally connected with one side of the protecting shell, and the outer connector exposed outside the protecting shell is accommodated in the overturning shell.

It will be appreciated that when the user rotates the flip housing, the outer connector can be exposed and the user can conveniently insert the optical fiber connector into the first mating portion of the outer connector, thereby effecting the connection of the optical fibers. When the housing cover is turned over, the first plug portion of the outer connector can be covered, preventing sunlight, rain or ash from entering the optical fiber splitter.

In some embodiments, a connecting part is arranged on one side of the turnover shell, which is close to the protective shell, the connecting part is provided with a rotating shaft, a rotating shaft mounting hole is arranged on one side of the shell, which is close to the turnover shell, and the rotating shaft is inserted into the rotating shaft mounting hole, so that the turnover shell is rotationally connected with the protective shell.

In some embodiments, the housing is provided with a plurality of limiting grooves along the circumference of the shaft mounting hole, the connecting portion is further provided with limiting protrusions, and the limiting protrusions are clamped in any one of the limiting grooves.

It can be understood that when the turnover shell rotates, when the limit protrusion is clamped in any limit groove, the turnover shell can be opened at a preset angle and automatically hovered under the effect of the limit protrusion, and the fiber connector is facilitated for a user to plug.

In some embodiments, the fiber optic splitter further comprises:

the expansion box is supported at the bottoms of the protecting shell and the overturning shell and is detachably connected with the protecting shell and the overturning shell.

Through can dismantle the connection on the bottom surface of protecting crust and upset shell and extend the box, can have sufficient space and accept the optical fiber cable, can also keep holistic structure succinct orderly.

In some embodiments, the protecting shell and the overturning shell are respectively provided with an elastic clamping portion, the side wall of the expansion box is provided with a matching portion, and the elastic clamping portions are in clamping connection with the matching portions.

It can be appreciated that the snap connection can accelerate the assembly efficiency of the entire optical fiber splitter, and has a simple structure and simple assembly.

In some embodiments, the protective shell is provided with a first positioning part, the expansion box is provided with a second positioning part, and the second positioning part is matched and positioned with the first positioning part.

It can be understood that the second positioning part and the first positioning part are matched and positioned, so that the installation and positioning of the protective shell and the expansion box are realized, and dislocation and offset are not easy to occur.

In some embodiments, the top edge of the side panel of the expansion box is provided with a plurality of optical fiber limiting structures.

Specifically, the optical fiber limiting structure can be a gear, and when the optical fiber coil is placed in the expansion box, the optical fiber can be limited to be pulled out at will. Is favorable for preventing the coiled optical fiber from falling out of the expansion box.

In some embodiments, the expansion box is provided with a fiber inlet, and the fiber inlet is provided with a fiber clamping groove; and a welding clamping seat is detachably arranged in the expansion box.

Specifically, the optical fiber clamping groove is arranged on the bottom plate and matched with the fiber inlet, and is used for clamping and fixing the fiber to be used for entering a household, so that the fiber can be clamped, the fiber is prevented from being pulled out after being installed, and the fiber is limited to be pulled out at will. Because the welding clamping seat can fix the optical fiber cold connector and the welding heat-shrinkable sleeve, the end forming mode between the loose sleeve to be welded and the input optical fiber of the optical splitter body is flexible, and the optical fiber cold connector end forming mode or the welding end forming access except the on-site connector end forming mode can be selected.

In some embodiments, an elastic clamping block is arranged at the bottom of the welding clamping seat, a clamping groove is formed in the expansion box, and the elastic clamping block is detachably clamped in the clamping groove.

It can be understood that when the fiber-in is accessed by the fiber-optic cold connector end or the fusion splice, the fusion splice cassette can be installed in the expansion box, and when the fiber-in connector is accessed in an end-to-end mode, the installation of the fusion splice cassette is not required, and the disassembly of the fusion splice cassette is simple and convenient.

Drawings

Fig. 1 is a schematic overall structure of an optical fiber splitter according to a first embodiment of the present disclosure;

FIG. 2 is an exploded view of an optical fiber splitter according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of an adapter module in a fiber optic splitter according to an embodiment of the present disclosure;

FIG. 4 is an assembled schematic view of an adapter module in a fiber optic splitter according to an embodiment of the present disclosure;

FIG. 5a is an enlarged view of a portion of the area A shown in FIG. 4;

FIG. 5b is a partial cross-sectional view of a first mating portion of an optical fiber splitter according to an embodiment of the present disclosure;

FIG. 6 is a schematic diagram illustrating an exploded structure of a protective housing in a beam splitter according to an embodiment of the present disclosure;

FIG. 7 is a schematic diagram of a part of a protection shell of a beam splitter according to an embodiment of the present disclosure;

Fig. 8 is an assembly schematic diagram of a housing and an adapter module of a splitter according to an embodiment of the disclosure;

fig. 9 is an assembly schematic diagram of a cover and an adapter module of a beam splitter according to an embodiment of the present disclosure;

fig. 10 is an assembly schematic diagram of a housing and a cover of a beam splitter according to an embodiment of the present disclosure;

FIG. 11 is a schematic view of an optical fiber splitter according to another embodiment of the present disclosure;

FIG. 12 is a schematic diagram of an exploded structure of a cover and a flip housing of an optical fiber splitter according to an embodiment of the present disclosure;

fig. 13 is a schematic overall structure of an optical fiber splitter according to a second embodiment of the present disclosure;

fig. 14 is an exploded view of an optical fiber splitter according to a second embodiment of the present disclosure;

fig. 15 is a schematic structural diagram of an expansion box in an optical fiber splitter according to a second embodiment of the present disclosure;

FIG. 16 is an exploded view of a portion of a fiber optic splitter according to a second embodiment of the present disclosure;

FIG. 17 is an exploded view of an expansion box of a fiber optic splitter according to a second embodiment of the present disclosure;

fig. 18 is a schematic structural diagram of a fusion splice cassette in an optical fiber splitter according to a second embodiment of the present disclosure.

Detailed Description

In the description of embodiments of the present invention, it should be understood that the terms "length," "thickness," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of embodiments of the present invention and to simplify description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be configured and operated in a particular orientation, and thus should not be construed as limiting embodiments of the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the embodiments of the present invention, the meaning of "plurality" is two or more, unless explicitly defined otherwise.

In describing embodiments of the present invention, it should be noted that the term "coupled" should be interpreted broadly, unless otherwise indicated and limited thereto, such as being either fixedly coupled, detachably coupled, or integrally coupled; may be mechanically connected, may be electrically connected, or may be in communication with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements or interaction relationship between the two elements. The specific meaning of the above terms in the embodiments of the present invention can be understood by those of ordinary skill in the art according to specific circumstances.

Some embodiments of the invention are further elaborated below in connection with the drawings of the present specification.

With the popularity of fiber-to-the-home services, solutions to P2MP (Point 2Multiple Point, point-to-multipoint) fiber networking are increasingly used in the home scenario.

Currently, there are two main forms of existing optical fiber splitters, the first of which is a plug-in optical fiber splitter commonly used in outdoor fiber optic switch boxes. The inserted sheet type optical splitter is generally suitable for being installed on a cabinet or an inserted frame, and in a home scene, optical fibers are not provided with installation slots and are scattered on object placing cabinets such as a tabletop and a tea table, so that the inserted sheet type optical splitter is not attractive and occupies space.

The second is to encapsulate the optical fiber splitter in a plastic shell, but the optical fiber connectors mounted on the optical fiber splitter are used as independent components and are respectively mounted in corresponding connector mounting grooves, so that the volume of the optical fiber splitter is increased and the space is occupied.

When the optical fiber branching device enters a home interior scene, the volume requirement of the optical fiber branching device is high in order to keep coordination and attractive with the indoor home scene. Therefore, how to reduce the volume of the optical fiber splitter and ensure the connection stability of the optical fibers in the optical fiber splitter, so that the optical fiber splitter is better integrated into a home environment is a problem to be solved at present.

Example 1

Fig. 1 is a schematic overall structure of an optical fiber splitter provided in the first embodiment of the present application, and fig. 2 is an exploded schematic structural diagram of an optical fiber splitter provided in the first embodiment of the present application, as shown in fig. 1 and fig. 2, an optical fiber splitter 100 provided in the present application includes:

an adapter module 10, wherein the adapter module 10 comprises a mounting bracket 12, an outer connector 1 and an inner connector 2 which are arranged at two sides of the mounting bracket 12, the outer connector 1 comprises a plurality of first plugging portions 11a which are sequentially arranged, at least two adjacent first plugging portions 11a share one side wall, the inner connector 2 comprises a plurality of second plugging portions 11b which are sequentially arranged, and the second plugging portions 11b are communicated with the first plugging portions 11a in a one-to-one correspondence manner;

A beam splitter body 20; and

The protection shell 30, the adapter module 10 and the beam splitter body 20 are both accommodated in the protection shell 30, and the external connector 1 is exposed outside the protection shell 30.

In the above scheme, two adjacent first grafting portions in the outer connector of adapter module share a lateral wall, through the adapter module of high integration and integrated design, can effectively reduce the volume of adapter module, and then can be favorable to reducing whole fiber optic splitter's volume, expose the outer connector in the protecting crust outside and can make things convenient for the user to peg graft fiber optic connector.

Fig. 3 is a schematic structural diagram of an adapter module in an optical fiber splitter according to the first embodiment of the present application, as shown in fig. 3, the adapter module 10 is detachably mounted in a protection shell, and specifically, the adapter module 10 may be detachably connected to the protection shell 30 by means of a snap connection, an adhesive connection, a screw fixation, or the like.

The adapter module 10 comprises a mounting bracket 12, an outer connector 1 and an inner connector 2 arranged on two sides of the mounting bracket 12, wherein the mounting bracket 12, the outer connector 1 and the inner connector 2 are integrally formed.

In this embodiment, the specification of the connector on the mounting bracket 12 can be designed according to the specification of the optical connector when the adapter module is manufactured. It will be appreciated that the inner connector 2 and the outer connector 1 located on both sides of the mounting bracket 12 may be connectors of the same specification or connectors of different specifications.

The mounting bracket 12 may be plate-shaped, rectangular frame-shaped, or the like, and is not limited thereto. In the present embodiment, the mounting bracket 12 is rectangular plate-shaped. The connectors with two different specifications are respectively arranged on two sides of the mounting bracket 12, and the connectors with two different specifications are coaxially arranged in one-to-one correspondence, so that smooth transmission of light is ensured. Specifically, the outer connector 1, the inner connector 2 and the mounting bracket 12 of two different specifications are integrally injection molded.

In some embodiments, the interconnector 2 is disposed on one side of the mounting bracket 12, and is an nipple located inside the beam splitter. The outer connector 1 is arranged on the other side of the mounting bracket 12, so that the user can conveniently plug in the optical fiber.

Specifically, as shown in fig. 3, the outer connector 1 includes a plurality of first plugging portions 11a sequentially arranged, the inner connector 2 includes a plurality of second plugging portions 11b sequentially arranged, the first plugging portions 11a are used for plugging SC-type connectors, and the second plugging portions 11b are used for plugging bare-core connectors.

As shown in fig. 3, the adapter module 10 has 5 SC-type connector plugging portions and 5 bare ferrule connector plugging portions, in which the bare fibers at the tail of the bare ferrule connector at one end of the mounting bracket are led into the light inlet of the splitter body 20, the bare fibers at the tail of the 4 bare ferrule connector at the other end of the mounting bracket are connected to the light outlet of the splitter body 20, and the two bare fibers are connected by fusion, so that the splitter body 20 splits light. When the bare optical fiber is connected with the optical splitter body 20, it is necessary to avoid bending at a small angle, because bending at a small angle is easy to damage the optical fiber, in the drawings of the application, connection of all the optical fibers is only schematic, and in the actual connection process, a larger winding radius needs to be maintained, so that the service life of the optical fiber and normal transmission of signals are ensured.

The optical splitter body 20 may be a 1-4 optical splitter, a 1-6 optical splitter, or a 1-8 optical splitter, which is not limited herein, and the adapter module 10 manufactured by adopting the integral injection molding process can design the number and the specification of the plugging portions of the connector according to actual requirements.

Fig. 4 is an assembly schematic diagram of an adapter module in an optical fiber splitter according to an embodiment of the present application, as shown in fig. 4, an end of a bare optical fiber 101 may be welded to a bare ferrule connector, where the bare ferrule connector includes a ferrule base 102, a ferrule head 103, and a protective tail sleeve 104. Specifically, the ferrule 103 is a ceramic ferrule, and the bare fiber 101 is inserted into a through hole of the ferrule 103. The connector referred to in the present application may be a planar connector, a bevel connector, an SC connector, or a bare ferrule connector.

Fig. 5a is a partial enlarged view of the area a shown in fig. 4, and as shown in fig. 5a, the first plugging portion 11a includes a plugging portion 111a and a plugging frame 112a located outside the plugging portion 111 a. Specifically, the insertion portion 111a is provided protruding from one side surface of the mounting bracket 12, and has a hollow cylindrical shape.

The plug frame 112a is square, and two adjacent plug frames 112a share one side wall 1121, which can improve the compactness of the whole structure and can also be adapted to an SC-type connector. In order to improve connection stability, the end wall 1122 of the plug frame 112a is provided with a key groove 113a, and the key groove 113a is used to engage a positioning key (e.g., a K key) on the SC-type connector. When the SC-type connector is inserted into the first plugging portion 11a, the key groove 113a on the plugging frame 112a can play a foolproof role, and improve connection stability.

Fig. 5b is a partial cross-sectional view of a first plugging portion in an optical fiber splitter according to an embodiment of the present application, as shown in fig. 5b, in some embodiments, in order to further enhance the installation stability of the adapter module 10, two opposite side walls 1121 of the plugging frame 112a are respectively provided with elastic clamping arms 1123 near the surface of the plugging portion 111a, when the SC-type connector is inserted into the first plugging portion 11a, the opposite elastic clamping arms 1123 can engage with the SC-type connector, so as to prevent the SC-type connector connected with the external connector 1 from coming out, and improve the connection stability of the connector and the splitter.

The inner connector 2 further comprises a resilient locking clip 112b located outside the second mating portion 11b, said resilient locking clip 112b being used for locking the bare ferrule connector. Specifically, the second insertion portion 11b is provided protruding from one side surface of the mounting bracket 12, and has a hollow cylindrical shape.

In order to reduce the loss during light propagation, as shown in fig. 4, the adapter module 10 further includes a sleeve 13, and the sleeve 13 is inserted into the first insertion portion 11 a. In the present embodiment, the sleeve 13 is a ceramic sleeve.

The side wall of the second plugging portion 11b is provided with a slot 113b, and the slot 113b extends from the open end of the second plugging portion 11b to a side close to the mounting bracket. The slot 113b is U-shaped, and in other embodiments, the slot 113b may have other shapes. The arrangement of the slot 113b can facilitate the insertion of the ceramic sleeve 13 into the second plugging portion 11b, and when in installation, the ceramic sleeve 13 can expand the side wall of the second plugging portion 11b, so as to facilitate the pushing in of the ceramic sleeve 13. In this embodiment, the second plugging portion 11b is made of plastic and has a certain elasticity.

Further, two elastic locking clips 112b are respectively located at both sides of the second plugging portion 11 b. The ends of the elastic locking clips 112b remote from the mounting bracket 12 are provided with inclined guide surfaces 115b, and the inclined guide surfaces 115b of the two elastic locking clips 112b form a V-shaped opening. Under the thrust action of a user, one end of the bare ferrule connector is abutted against the inclined guide surfaces 115b of the two elastic locking clamps 112b and pushes the two elastic locking clamps 112b to open to two sides, and the ferrule 103 of the bare ferrule connector is easier to insert into the second inserting part 11b between the two elastic locking clamps 112b along the V-shaped opening, so that the bare ferrule connector is more labor-saving to assemble and is not easy to shift in position.

In order to ensure the connection stability between the bare ferrule connector and the second mating portion 11b, please refer to fig. 4 and 5, the elastic locking clip 112b is provided with a locking protrusion 114b. The periphery of the ferrule base 102 of the bare ferrule connector is provided with a limiting notch 1021, and the locking protrusion 114b is used for locking the limiting notch 1021 of the periphery of the ferrule base of the bare ferrule connector.

In the actual assembly process, the ceramic sleeve 13 is inserted into the second plugging portion 11b, and at this time, the opening end of the second plugging portion 11b is provided with a U-shaped slot, so that the opening end of the second plugging portion 11b can be enlarged, and the ceramic sleeve 13 can be smoothly inserted into the second plugging portion 11 b. The bare ferrule connector 1 at the tail end of the bare optical fiber is inserted into the second plugging portion 11b, at this time, the ferrule head 103 is plugged into the second plugging portion 11b, the ferrule base 102 is abutted against the open end of the second plugging portion 11b, and the locking protrusion 114b of the elastic locking clamp 112b is inserted into the limiting notch 1021 of the ferrule base 102, so that the bare ferrule connector 1 is locked with the second plugging portion 11b, and the bare ferrule connector 1 is not easy to fall off, thereby improving the connection stability.

When the bare ferrule connector 1 needs to be replaced or pulled out, the two elastic locking clips 112b are pushed away from each other, the locking protrusions 114b are separated from the limiting notches 1021 of the ferrule base 102, the bare ferrule connector 1 is unlocked from the second plugging portion 11b, and the bare ferrule connector 1 can be pulled out from the second plugging portion 11 b.

With continued reference to fig. 4, in order to facilitate the installation of the entire adapter module 10, two ends of the mounting bracket 12 are respectively provided with a first clamping portion 121 and a second clamping portion 122, and the adapter module 10 is installed and fixed in the protective housing 30 through the first clamping portion 121 and the second clamping portion 122. In this embodiment, the first clamping portion 121 and the second clamping portion 122 have different structures, so as to perform a foolproof function and avoid reverse installation direction during installation. In some embodiments, the first clamping portion 121 is a T-shaped column and the second clamping portion 122 is a rectangular column.

With continued reference to fig. 4 and 5, in order to prevent the first plugging portion 11a exposed outside the protection shell 30 from entering dust, the adapter module 10 may further include a dust cap 14 plugged into the first plugging portion 11 a. The dust cap 14 may be made of plastic, and the shape of the dust cap 14 matches with the plugging frame 112a of the first plugging portion 11 a.

In order to further enhance the mounting stability of the adapter module 10, a plurality of reinforcing ribs 123 are disposed on a side of the mounting bracket 12, which is close to the second plugging portion 11b, the reinforcing ribs 123 are used for being clamped with the hook structure on the protective shell, and in addition, the reinforcing ribs 123 are disposed at intervals along the extending direction of the mounting bracket 12, so that the overall strength of the whole adapter module 10 can be enhanced. Fig. 6 is an exploded view of a protection housing in a beam splitter according to an embodiment of the present application, and as shown in fig. 6, a protection housing 30 includes a housing 31 and a cover 32 that are detachably connected. The protecting shell 30 is made of plastic, and the shell 31 and the cover 32 are respectively connected with the adapter module 10 in a clamping manner.

Because the adapter module 10 has higher integration, the volume of the adapter module is reduced, and thus the volume of the protective housing 30 can be reduced. Illustratively, the guard casing has a width of about 80mm to about 100mm and a length of about 40mm to about 50mm.

Fig. 7 is a schematic view of a part of a protection shell of a beam splitter according to an embodiment of the present application, as shown in fig. 7, the housing 31 includes a bottom wall 311, two opposite first side walls 312 and a second side wall 313. The housing 31 is integrally injection molded.

In order to better mount the adapter module 10, referring to fig. 6 and 7, a first limiting groove 312a and a second limiting groove 312b are respectively disposed on two first side walls 312 of the housing 31, wherein the first clamping portion 121 is clamped in the first limiting groove 312a, and the second clamping portion 122 is clamped in the second limiting groove 312 b. Illustratively, the first limiting groove 312a has a T-shaped cross section, and the second limiting groove 312b has a rectangular cross section.

The bottom wall 311 of the shell 31 is provided with a plurality of clamping ribs 311a, and clamping grooves are formed between the clamping ribs 311a so that the mounting bracket 12 is inserted into the clamping grooves, and the mounting stability is further improved.

As shown in fig. 7, the bottom wall 311 of the housing 31 is further provided with a mounting groove 314, and the mounting groove 314 is used for mounting the beam splitter body 20. The specific structure of the mounting groove 314 is not limited herein, as long as the fixed beam splitter body can be mounted.

Fig. 8 is an assembly schematic diagram of a housing and an adapter module of the optical splitter provided in the first embodiment of the present application, as shown in fig. 8 and 5, a first hook 311b formed by extending toward a direction close to the cover 32 is disposed on an inner side of the bottom wall 311 of the housing 31, and the first hook 311b is buckled with a part of the reinforcing ribs 123.

Fig. 9 is an assembly schematic diagram of a cover body and an adapter module of the optical splitter provided in the first embodiment of the present application, as shown in fig. 9 and 5, a second hook 321 formed by extending toward a direction close to the housing 31 is disposed at an inner side of the cover body 32, and the second hook 321 is buckled with a portion of the reinforcing ribs 123.

Fig. 10 is an assembly schematic diagram of a housing and a cover of a beam splitter according to an embodiment of the present application, in order to realize detachable connection between the cover 32 and the housing 31, please refer to fig. 7 and 10 together, a hook 315 is disposed on an inner side of a first side wall 312 of the housing 31, and the hook 315 extends transversely and protrudes toward a top. Correspondingly, the inner wall of the cover body 32, which is close to the shell 31, is provided with a joint groove 322, the hook 315 is clamped in the joint groove 322, and it can be understood that the transversely extending part of the hook 315 can better bear the cover body 32, the protruding part of the hook 315 can better position the cover body 32, the mounting dislocation of the cover body 32 is avoided, and the cover body 32 can be prevented from being pried from the side surface.

In order to improve the connection stability between the cover 32 and the housing 31, the first side wall 312 and the second side wall 313 of the housing 31 are further provided with a boss 316a and a plurality of spacing ribs 316b disposed at intervals. Correspondingly, as shown in fig. 6, the periphery of the cover 32 is provided with a plurality of buckling openings 323, and the buckling openings 323 are matched and clamped with the limiting ribs 316b. In other embodiments, the limiting ribs can be arranged on the cover body, the buckling grooves are formed in the first side wall and the second side wall of the shell, and the hooks enable the cover body to be buckled and connected with the shell stably.

Fig. 11 is a schematic structural view of another angle of the optical fiber splitter according to the first embodiment of the present application, and fig. 12 is a schematic exploded structural view of a cover and a flip housing of the optical fiber splitter according to the first embodiment of the present application, as shown in fig. 11 to 12, in order to better protect a connector exposed outside a protection housing, as shown in fig. 2, the optical fiber splitter 100 further includes a flip housing 40, where the flip housing 40 is rotatably connected to one side of the protection housing 30, and the external connector 1 exposed outside the protection housing 30 is accommodated in the flip housing 40.

It will be appreciated that when the user rotates the flip housing 40, the outer connector 1 can be exposed, and the user can easily insert the optical fiber connector into the first socket 11a, thereby achieving the connection of the optical fibers. When the flip housing 40 is closed, the outer connector 1 can be capped, preventing sunlight, rain or ash from entering the inside of the fiber optic splitter.

As shown in fig. 11, in the state where the flip housing 40 is covered, the length of the optical fiber splitter is about 80mm to 100mm, and the width is about 80mm to 100mm, and the length of the adapter module is about 45mm due to the use of the adapter module with high integration.

As shown in fig. 12, a connection portion 41 is disposed on a side of the flip housing 40, which is close to the protective housing 30, the connection portion 41 is provided with a rotation shaft 42, a rotation shaft mounting hole 317 is disposed on a side of the housing 31, which is close to the flip housing 40, and the rotation shaft 42 is inserted into the rotation shaft mounting hole 317 and can be rotatably assembled along the rotation shaft mounting hole 317, so that the flip housing 40 is rotatably connected with the protective housing 30.

Further, the housing 31 is provided with a plurality of limiting grooves 318 along the circumference of the shaft mounting hole 317, the connecting portion 41 is further provided with limiting protrusions 43, and the limiting protrusions 43 are clamped in any one of the limiting grooves 318. It can be appreciated that when the turnover housing 40 rotates, when the limiting protrusion 43 is clamped in any one of the limiting grooves 318, the turnover housing 40 can be opened at a preset angle and automatically hovered under the action of the limiting protrusion 43, which is beneficial for a user to plug and unplug the optical fiber connector.

In assembly, the splitter body 20 and the adapter module 10 are first mounted in the housing 31, and then the cover 32 is engaged with the housing 31. When the cover 32 is buckled, the limiting ribs 316b on the shell are transversely squeezed open, when the cover 32 is buckled in place, the second side wall 313 and the first side wall 312 of the shell 31 are restored, the limiting ribs 316b are clamped in the buckling openings 323, the hooks 315 on the shell 31 are clamped in the joint grooves 322 of the cover 32, the cover 32 is transversely locked, and the cover 32 can be prevented from being pried open. Moreover, the first hook 311b on the housing 31 is buckled with a part of the reinforcing rib 123, and the second hook 321 on the cover 32 is buckled with another part of the reinforcing rib 123, so that the housing 31, the cover 32 and the adapter module 10 can be stably connected, and the housing is prevented from being deformed or pried by a person. Finally, the rotating shaft 42 of the turnover shell 40 is inserted into the rotating shaft mounting hole 317 on the shell 31 of the protecting shell 30, so that the service life of the structure is prolonged, and the safety is improved.

The optical fiber branching device provided by the embodiment 1 of the application can be suitable for optical fiber installation accessed in an end-to-end mode of a connector, the whole assembly process is simple and efficient, and the volume of the whole optical fiber branching device can be greatly reduced by matching with a high-integration adapter module; the configured connectors with different specifications can be suitable for different optical fiber access, and the connector has flexible overall structure and wide application range; the turnover shell can further prevent the connector from being exposed, and the service life and the safety of the whole optical fiber branching device are improved.

Example two

Fig. 13 is a schematic overall structure of an optical fiber splitter according to a second embodiment of the present application, fig. 14 is an exploded schematic structural view of an optical fiber splitter according to a second embodiment of the present application, and as shown in fig. 13 and fig. 14, an optical fiber splitter 100 according to the present application includes

An adapter module 10, wherein the adapter module 10 comprises a mounting bracket 12, an outer connector 1 and an inner connector 2 which are arranged at two sides of the mounting bracket 12, the outer connector 1 comprises a plurality of first plugging portions 11a which are sequentially arranged, at least two adjacent first plugging portions 11a share one side wall, the inner connector 2 comprises a plurality of second plugging portions 11b which are sequentially arranged, and the second plugging portions 11b are in one-to-one correspondence with the first plugging portions 11 a;

A beam splitter body 20;

a protection case 30, in which the adapter module 10 and the splitter body 20 are both accommodated, and the external connector 1 is exposed outside the protection case 30;

a turnover housing 40, wherein the turnover housing 40 is rotatably connected with one side of the protective housing 30; and

The expansion box 50 is supported at the bottoms of the protective shell 30 and the turnover shell 40, and is detachably connected with the protective shell 30 and the turnover shell 40.

In the above scheme, the box is extended on the detachable connection of the bottom surfaces of the protective shell 30 and the turnover shell 40, so that enough space can be provided for accommodating the optical fiber cable, and the whole structure can be kept compact and orderly.

In this embodiment, the length of the expansion box is consistent with the overall length and overall width of the connected protective shell 30 and flip shell 40.

Fig. 15 is a schematic structural diagram of an expansion box in the optical fiber splitter according to the second embodiment of the present application, as shown in fig. 15, the expansion box 50 is square box-shaped, and may be integrally injection molded from plastic or other materials. The top open end of the expansion box 50 abuts the protective shell 30 and the flip shell 40.

The expansion box 50 includes a bottom plate 51 and four side plates 52 connected to the bottom plate 51.

Fig. 16 is an exploded schematic view of a portion of the structure of the optical fiber splitter provided in the second embodiment of the present application, please refer to fig. 15 and 16 together, wherein a first elastic clamping portion 319 is symmetrically disposed on two sides of the housing 31 of the protective housing 30, at least one second elastic clamping portion 45 is disposed on a bottom edge of a side wall of the flip housing 40, a mating portion is disposed on a side wall of the expansion box 50, and the first elastic clamping portion 319 and the second elastic clamping portion 45 are in clamping connection with the mating portion.

Specifically, the two side plates 52 of the expansion box 50 are provided with a clamping groove 521, the clamping groove 521 is a matching part, and the first elastic clamping part 319 is in clamping connection with the clamping groove 521, so that the detachable connection of the expansion box 50 and the protective shell 30 is realized.

At least one clamping rib 523 is arranged at the top edge of the side plate 52 of the expansion box 50, the clamping rib 523 is a matching part, and the clamping rib 523 is matched and clamped with the second elastic clamping part 45. When the expansion box 50 is in clamping connection with the protective shell 30 and the turnover shell 40, the second elastic clamping parts 45 squeeze the clamping ribs 523, so that the side plates of the expansion box 50 deflect to two sides under the squeezing force of the two sides until the second elastic clamping parts 45 are clamped in place, and the clamping ribs 523 are restored to the original positions, so that the second elastic clamping parts 45 are clamped, and the expansion box 50 is clamped and fixed with the turnover shell 40. The second elastic engaging portion 45 may be a hook, a latch, or the like, which is not limited herein.

In order to better position the installation position of the expansion box 50 and avoid installation dislocation, one end, close to the turnover shell 40, of the cover body 32 of the protective shell 30 is provided with a first positioning part 324, correspondingly, two side plates 52 of the expansion box 50 are provided with second positioning parts 522, and the second positioning parts 522 are matched with the first positioning parts 324 for positioning, so that the installation positioning of the protective shell 30 and the expansion box 50 is realized. Specifically, the first positioning portion 324 may be a positioning hole, and the second positioning portion 522 may be a positioning post, where the positioning post is inserted into the positioning hole to implement positioning engagement. In other embodiments, the first positioning portion 324 may be a positioning post, and the second positioning portion 522 may be a positioning hole, which is not limited herein.

In the above scheme, the first elastic clamping portion 319 on the protective shell 30 and the second elastic clamping portion 45 on the turnover shell 40 are respectively matched with the clamping groove 521 and the clamping rib 523 on the expansion box 50, the first positioning portion on the protective shell 30 is matched with the second positioning portion on the expansion box 50, so that the situation that the installation is misplaced is avoided, a user can mutually clamp the expansion box 50, the protective shell 30 and the turnover shell 40, connection is stable, and assembly is simple and efficiency is high when clamping connection is performed.

Further, the bottom plate 51 is provided with a plurality of mounting holes 511 to facilitate the installation of the entire optical fiber splitter to a user-selected installation site. Specifically, the mounting may be performed by means of screws, hooks, or the like.

The side plate 52 of the expansion box 50 is provided with a fiber inlet 524, the fiber inlet 524 is provided with a fiber clamping groove 525, and the fiber inlet 524 is used for penetrating the optical fiber. Specifically, the optical fiber clamping groove 525 is disposed on the bottom plate 51 and is matched with the fiber inlet 524, and the optical fiber clamping groove 525 is used for clamping and fixing the fiber to be taken out, so that the fiber can be clamped, the fiber is prevented from being pulled out after being installed, and the fiber is limited to be taken out at will.

Specifically, the fiber clamping grooves 525 may be specifically arranged in a spaced-apart manner, and two adjacent clamping structures are used for passing through an optical fiber. In order to avoid the optical fiber holding groove 525 from damaging the optical fiber, the optical fiber holding groove 525 may be made of a material with a large friction force such as rubber or silica gel, so that the optical fiber movement can be further limited, and the optical fiber can be prevented from being damaged.

As shown in fig. 16, in order to prevent foreign matters from entering the expansion box 50, a side of the flip housing 40 away from the protective housing 30 extends to the bottom to form a blocking piece 44, and the blocking piece 44 is clamped at the fiber inlet 524.

Fig. 17 is an exploded schematic view of an expansion box of an optical fiber splitter provided in the second embodiment of the present application, and fig. 18 is a schematic structural view of a fusion splice holder in the optical fiber splitter provided in the second embodiment of the present application; as shown in fig. 7 and 18, in order to facilitate the fusion of the optical fibers in the expansion box 50, a fusion splice holder 53 is detachably mounted in the expansion box 50, and the fusion splice holder 53 is used for clamping an optical fiber cable, an optical fiber cold splice or a fusion heat-shrinkable sleeve, etc. Because the welding clamping seat 53 can fix the optical fiber cold connector and the welding heat-shrinkable sleeve, the end forming mode between the loose sleeve to be welded and the input optical fiber of the optical splitter body is flexible, and the optical fiber cold connector end forming mode or the welding end forming access except the on-site connector end forming mode can be selected.

In this embodiment, the fusion splice holder 53 includes a base plate 531 and fins 532 disposed on the base plate 531 at intervals, wherein the base plate 531 and the fins 532 are integrally formed. Illustratively, the fins 532 may be arcuate, rectangular, etc., and in this embodiment, the fins 532 are arcuate fins.

In order to facilitate the detachable connection between the welding clamping seat 53 and the bottom plate 51 of the expansion box 50, an elastic clamping block 533 is arranged at the bottom of the substrate 531 of the welding clamping seat 53, and the elastic clamping block 533 is triangular or trapezoidal. Correspondingly, the bottom plate 51 of the expansion box 50 is provided with a clamping groove 512, and the elastic clamping block 533 is detachably clamped in the clamping groove 512.

Specifically, the clamping groove 512 includes an insertion section 512a and a clamping section 512b, wherein the width of the insertion section 512a is greater than the width of the clamping section 512b, i.e., the elastic clamping block 533 can be inserted into the clamping groove 512 from the insertion section 512a and move along the insertion section 512a until the elastic clamping block 533 is clamped into the clamping section 512 b.

When the welding cartridge 53 needs to be disassembled from the expansion box 50, the fin 532 of the welding cartridge 53 is pressed, and the elastic clamping block 533 is driven to move along the clamping section 512b of the clamping groove 512 into the insertion section 512a, so that the welding cartridge 53 can be disassembled.

It will be appreciated that the fusion splice cassette 53 may be installed within the expansion box 50 when the fiber-in-the-home is terminated with a fiber cold splice or fused into an access, and that the installation of the fusion splice cassette 53 may not be required when the fiber-in-the-home connector is terminated.

In order to avoid the optical fibers, cables and the like in the expansion box 50 from falling out, a plurality of optical fiber limiting structures 54 are further arranged at the top edges of the side plates of the expansion box 50, and in the embodiment, the optical fiber limiting structures 54 are gear teeth, so that the optical fibers can be limited from falling out randomly when the optical fiber coil is placed in the expansion box.

The structure of the adapter module 10, the protection case 30 and the flip housing 40 in this embodiment is substantially the same as that of embodiment 1, and will not be described here again.

In other embodiments, the expansion box 50 may also be detachably connected to the protection shell and the flip shell by screw mounting and bonding, which is not limited herein.

During assembly, the welding clamping seat 53 is clamped in the clamping groove 512, then the assembled protective shell 30 and the turnover shell 40 are arranged above the expansion box 50, the first elastic clamping parts 319 on two sides of the protective shell 30 are clamped with the clamping grooves 521 on the expansion box 50, the second elastic clamping parts 45 on two sides of the turnover shell are clamped and fixed with the corresponding first clamping ribs 523 on the expansion box 50, at the moment, the first positioning parts on the protective shell 30 are matched with the second positioning parts on the expansion box 50, mounting dislocation is avoided, a user can clamp the expansion box 50, the protective shell 30 and the turnover shell 40 with each other, connection is stable, and assembly is simple and efficiency is high during clamping connection.

While the preferred embodiment has been described, it is not intended to limit the scope of the claims, and any person skilled in the art can make several possible variations and modifications without departing from the spirit of the invention, so the scope of the invention shall be defined by the claims.

Claims (14)

1. An optical fiber splitter, the optical fiber splitter comprising

The adapter module comprises a mounting bracket, an outer connector and an inner connector, wherein the outer connector and the inner connector are arranged on two sides of the mounting bracket, the outer connector comprises a plurality of first plug-in parts which are sequentially arranged, at least two adjacent first plug-in parts share one side wall, the inner connector comprises a plurality of second plug-in parts which are sequentially arranged, and the second plug-in parts are correspondingly communicated with the first plug-in parts one by one;

a beam splitter body; and

The adapter module and the beam splitter body are both accommodated in the protective shell, and the outer connector is exposed outside the protective shell.

2. The optical fiber splitter according to claim 1, wherein the inner connector further comprises a resilient locking clip located outside the second mating portion, the resilient locking clip for locking the bare ferrule connector.

3. The optical fiber splitter according to claim 2, wherein an end of the elastic locking clip remote from the mounting bracket is provided with an inclined guide surface, and the inclined guide surfaces of the two elastic locking clips form a V-shaped opening.

4. The optical fiber splitter according to claim 2, wherein the resilient locking clip is provided with a locking protrusion for locking a limit notch of a periphery of a ferrule base of the bare ferrule connector.

5. The optical fiber splitter according to claim 2, wherein a side wall of the second plug portion is provided with a slot extending from an open end of the second plug portion to a side adjacent to the mounting bracket.

6. The optical fiber splitter according to claim 1, wherein the first plug portion includes a plug portion and a plug frame located outside the plug portion, two adjacent plug frames sharing a side wall, and an end wall of the plug frame is provided with a key groove.

7. The fiber optic splitter of claim 1, wherein the first mating portion is for mating with an SC-type connector and the second mating portion is for mating with a bare ferrule connector.

8. The optical fiber splitter according to claim 1, wherein the protective housing comprises a housing and a cover that are detachably connected, the housing and the cover being detachably connected to the mounting bracket, respectively.

9. The optical fiber branching device according to claim 8, wherein the mounting bracket is provided with a plurality of reinforcing ribs, a first hook extending in a direction close to the housing is provided on the inner side of the cover, a second hook extending in a direction close to the housing is provided on the inner side of the housing, and the first hook and the second hook are connected with the reinforcing ribs in a clamping manner.

10. The optical fiber branching device according to claim 8, wherein a plurality of spacing ribs are arranged on the side wall of the housing at intervals, a plurality of buckling openings are arranged on the edge of the cover body, and the buckling openings are matched and clamped with the spacing ribs.

11. The fiber optic splitter of claim 1, further comprising:

the overturning shell is rotationally connected with one side of the protective shell; and

The expansion box is supported at the bottoms of the protecting shell and the overturning shell and is detachably connected with the protecting shell and the overturning shell.

12. The fiber optic splitter of claim 11, wherein the top edge of the side panel of the expansion box is provided with a plurality of fiber optic spacing structures.

13. The optical fiber splitter according to claim 11, wherein the expansion box is provided with a fiber inlet, the fiber inlet being provided with a fiber clamping groove; and a welding clamping seat is detachably arranged in the expansion box.

14. The optical fiber branching device according to claim 13, wherein an elastic clamping block is arranged at the bottom of the welding clamping seat, a clamping groove is arranged on the expansion box, and the elastic clamping block is detachably clamped in the clamping groove.