阅读说明：本技术 一种光纤连接头以及光纤连接器 (Optical fiber connector and optical fiber connector ) 是由 熊伟 李秀鹏 喻建雄 彭尚军 何伯勇 于 2019-07-26 设计创作，主要内容包括：本申请实施例公开了一种光纤连接头以及光纤连接器,该光纤连接头可以在室外使用,并可在现场装配,即插即用,且该光纤连接头的光缆长度可以在施工现场灵活设置,有利于节约光缆,且组装方便快捷。光纤连接头包括：手柄、尾套、光缆、FMC组件、主轴以及保护罩,光缆的一端与FMC组件连接,且光缆由FMC组件的第一端伸出,FMC组件包括插芯,插芯设置在FMC组件的第二端；主轴套设于FMC组件的第一端,保护罩套设于FMC组件的第二端,且保护罩与主轴固定连接；主轴的远离保护罩的一端与尾套连接,主轴的远离保护罩的一端用于固定光缆；手柄套设于保护罩以及主轴外侧。(The embodiment of the application discloses fiber connector and fiber connector, this fiber connector can be in outdoor use to can assemble at the scene, plug-and-play, and this fiber connector's optical cable length can be in the nimble setting of job site, is favorable to practicing thrift the optical cable, and assembles convenient and fast. The fiber connector includes: the optical cable is connected with the FMC component, and extends out of the first end of the FMC component; the main shaft is sleeved at the first end of the FMC assembly, the protective cover is sleeved at the second end of the FMC assembly, and the protective cover is fixedly connected with the main shaft; one end of the main shaft, which is far away from the protective cover, is connected with the tail sleeve, and one end of the main shaft, which is far away from the protective cover, is used for fixing the optical cable; the handle is sleeved outside the protective cover and the main shaft.)

1. An optical fiber connector, comprising: the device comprises a handle, a tail sleeve, an optical cable, a field connector FMC assembly, a main shaft and a protective cover;

One end of the optical cable is connected with the FMC assembly, the optical cable extends out of the first end of the FMC assembly, the FMC assembly comprises a plug core, and the plug core is arranged at the second end of the FMC assembly;

The main shaft is sleeved at the first end of the FMC assembly, the protective cover is sleeved at the second end of the FMC assembly, and the protective cover is fixedly connected with the main shaft;

one end of the main shaft, which is far away from the protective cover, is connected with the tail sleeve, and one end of the main shaft, which is far away from the protective cover, is used for fixing the optical cable;

The handle sleeve is located the safety cover and the main shaft outside.

2. The fiber optic connector according to claim 1, wherein the protective cover comprises a cover body and a fixing sleeve formed by extending one end of the cover body, the fixing sleeve is inserted into the main shaft, the FMC assembly penetrates through the fixing sleeve and the cover body, and the cover body is sleeved outside the ferrule.

3. The fiber optic connector of claim 1 or 2, wherein a shoulder is formed on an inner wall of an end of the spindle remote from the protective cover, the first end of the FMC assembly abutting the shoulder.

4. The optical fiber connector according to any one of claims 1 to 3, wherein an end of the main shaft away from the protective cover includes a fixing portion and a crimping structure formed by extending an end surface of the fixing portion, the fixing portion and the crimping structure are sleeved on an outer side of the optical cable, an outer wall of the fixing portion is formed with an external thread, an inner wall of the tail sleeve is provided with an internal thread, the tail sleeve is sleeved on the fixing portion and the crimping structure, and the internal thread on the tail sleeve is screwed with the external thread on the fixing portion, so that the optical cable is fixed by the crimping structure.

5. The optical fiber connector according to claim 4, wherein the crimping structure includes at least two cantilever beams, fixed ends of the at least two cantilever beams are connected to the fixed portion, inner walls of movable ends of the at least two cantilever beams are formed with bump structures, and the movable ends of the at least two cantilever beams are used for compressing the optical cable.

6. The fiber optic connector of any one of claims 1-5, wherein an outer diameter of the boot is smaller than an outer diameter of the cover.

7. The optical fiber connector according to any one of claims 1 to 6, wherein a first fixing structure is disposed on the spindle, and a second fixing structure is disposed on the protective cover, and the first fixing structure and the second fixing structure are fixedly connected by a snap fit.

8. the fiber optic connector of claim 7, wherein the first securing structure is a snap and the second securing structure is a slot; or the first fixing structure is a clamping groove, and the second fixing structure is a buckle.

9. the fiber optic connector of claim 8, wherein the first securing structure is a snap disposed on an end surface of the main shaft facing the protective cover; the second fixing structure is a clamping groove and is arranged on the end face, close to the fixing sleeve, of the cover body.

10. The optical fiber connector according to claim 7, further comprising a pin, wherein the first fixing structure is a first insertion hole, the second fixing structure is a second insertion hole, and the pin is inserted into the first insertion hole and the second insertion hole.

11. the optical fiber connector according to claim 7, further comprising a clamp spring, wherein the first fixing structure is a first groove, the second fixing structure is a second groove, and the clamp spring is inserted into the first groove and the second groove.

12. the fiber optic connector of any one of claims 1-6, wherein an end surface of the main shaft facing the boot is bonded to an end surface of the cover body adjacent to the boot by glue.

13. The fiber optic connector according to any one of claims 1 to 12, wherein a positioning key is disposed on an end surface of the main shaft facing the protective cover, and a positioning groove is disposed on an end surface of the cover body adjacent to the fixing sleeve; or a positioning groove is arranged on the end face of the main shaft facing the protective cover, and a positioning key is arranged on the end face of the cover body close to the fixed sleeve; the positioning key is inserted into the positioning groove.

14. The fiber optic connector of any of claims 1-13, wherein an internal cavity of the boot mates with the FMC assembly to prevent rotation of the boot relative to the FMC assembly.

15. the fiber optic connector of any one of claims 1-14, wherein an end of the boot facing away from the spindle is provided with an opening such that a cross-section of the end of the boot facing away from the spindle is C-shaped.

16. The fiber optic connector of any one of claims 1-15, wherein a cable sealing ring is disposed on an outer portion of an end of the optical cable adjacent to the FMC assembly, and a spindle sealing ring is disposed on an outer portion of an end of the spindle adjacent to the protective cover.

17. An optical fiber connector, comprising:

An optical fiber connector according to any one of claims 1 to 16;

The adapter is provided with a cavity and a slot surrounding the cavity at one end;

The second end of the FMC assembly of the optical fiber connector is inserted into the cavity of the adapter, and the protective cover of the optical fiber connector is inserted into the slot.

Technical Field

The application relates to the technical field of optical communication, especially, relate to an optical fiber connector and fiber connector.

background

With the development of modern society and the explosive increase of information quantity, the demand of people on network throughput capacity is continuously improved. Optical transmission gradually becomes a mainstream scheme of modern communication by virtue of unique characteristics of ultrahigh bandwidth, low electromagnetic interference and the like, and particularly, an access network represented by Fiber To The Home (FTTH) which is a newly-built network at present is being deployed on a large scale.

In the construction of an optical fiber to the home network, an Optical Line Terminal (OLT) to an optical fiber termination box (ATB) of a subscriber needs to pass through a feeder section optical cable, a distribution section optical cable and a home section optical cable in sequence in the middle, wherein the home section optical cable is used for connecting the optical fiber distribution box and the optical fiber termination box, in the distribution process of the home section optical cable of the FTTH network, one way is to perform fusion splicing, that is, an optical fiber end corresponding to each home is distributed in the optical fiber distribution box, the optical fiber end of each home and the home optical cable are fused in the optical fiber distribution box by an optical fiber fusion splicer, and then the home optical cable is laid to each home. At the other end of the fiber optic cable, a field fusion splice is also required to connect with the fiber optic terminal closure of each home. The method has the problems that special optical fiber fusion equipment is needed, the technical requirement on operators is high, and the operation process is complicated and inconvenient.

disclosure of Invention

The embodiment of the application provides an optical fiber connector and an optical fiber connector, so that the optical fiber connector is convenient to plug and play outdoors with an adapter, the operation is simple and fast, and safety and reliability are realized.

In a first aspect, an embodiment of the present application provides an optical fiber connector, including: the FMC component comprises a handle, a tail sleeve, an optical cable, a field removable connector (FMC) component, a main shaft and a protective cover, wherein one end of the optical cable is connected with the FMC component, the optical cable extends out of the first end of the FMC component, the FMC component comprises a plug core, and the plug core is arranged at the second end of the FMC component; the main shaft is sleeved at the first end of the FMC assembly, the protective cover is sleeved at the second end of the FMC assembly, and the protective cover is fixedly connected with the main shaft; the one end and the tail cover of keeping away from the safety cover of main shaft are connected, and the one end of keeping away from the safety cover of main shaft is used for fixed optical cable, and the handle cover is located the safety cover and the main shaft outside.

in this embodiment, the optical fiber connector in the embodiment of the present application uses the FMC component to access the optical cable, so that an installer can flexibly cut the optical cable to obtain an optical cable with an actually required length according to the optical cable length actually required by a customer or an installation site, and the end of the cut optical cable can be assembled at the installation site, for example, the optical fiber connector is assembled into the FMC component first, and then the handle, the tail sleeve, the spindle, the protection cover, and the like are assembled with the FMC component, so as to assemble the optical fiber connector at the installation site. Therefore, the optical cable length of the optical fiber connector in the embodiment can be flexibly set on a construction site, the optical cable is saved, and the assembly is convenient and fast. In addition, through establish main shaft, safety cover, handle and tail cover at FMC subassembly overcoat and assemble fiber connector, can protect to make it satisfy IP68 protection level to FMC subassembly with this, because FMC subassembly has obtained effectual protection for this fiber connector is convenient outdoor and adapter plug-and-play, easy operation is swift, safe and reliable. In addition, the optical fiber connector of the FMC assembly can be assembled and disassembled on site, if the ferrule or the FMC assembly is damaged in the using process, only the FMC assembly needs to be replaced, the whole optical fiber connector with the optical cable does not need to be replaced, the later maintenance cost is greatly reduced, and the cost is saved.

Optionally, in some possible embodiments, the protective cover includes a cover body and a fixing sleeve formed by extending one end of the cover body, the fixing sleeve is inserted into the main shaft, the FMC assembly penetrates through the fixing sleeve and the cover body, and the cover body is sleeved outside the ferrule. In this embodiment, the lock pin outside is located to the cover body cover for the protection to the lock pin is realized, when this fiber connector of field installation, through with fixed cover insert the main shaft in, can realize the location to the safety cover fast, be favorable to realizing the alignment between the axis of safety cover and the axis of main shaft fast, and then install fast.

Optionally, in some possible embodiments, an inner wall of an end of the spindle remote from the boot is formed with a shoulder against which the first end of the FMC assembly abuts. The FMC assembly can be prevented from sliding in the axial direction of the main shaft toward a direction away from the protective cover.

Optionally, in some possible embodiments, the end of the main shaft away from the protective cover includes a fixing portion and a crimping structure formed by extending an end surface of the fixing portion, the fixing portion and the crimping structure are sleeved outside the optical cable, an outer wall of the fixing portion is formed with an external thread, an inner wall of the tail sleeve is provided with an internal thread, the tail sleeve is sleeved outside the fixing portion and the crimping structure, and the internal thread on the tail sleeve is screwed with the external thread on the fixing portion, so that the crimping structure fixes the optical cable. In this embodiment, because the optical cable is connected with the FMC component, and the optical cable is compressed tightly by the crimping structure on the main shaft, the FMC component can be further prevented from moving back and forth in the main shaft along the axial direction of the main shaft.

Optionally, in some possible embodiments, the crimping structure includes at least two cantilever beams, fixed ends of the at least two cantilever beams are connected with the fixed portion, inner walls of movable ends of the at least two cantilever beams are formed with bump structures, and the movable ends of the at least two cantilever beams are used for compressing the optical cable. In this embodiment, a specific implementation manner of the crimping structure is provided, so that the practicability of the scheme is improved, and the bump structure can increase the tensile property of the optical cable.

optionally, in some possible embodiments, the outer diameter of the fixing sleeve is smaller than the outer diameter of the cover body, so that the fixing sleeve can be inserted into the main shaft conveniently, and the cover body can be provided with a region on the end surface close to the fixing sleeve for fixedly connecting with the main shaft.

optionally, in some possible embodiments, a first fixing structure is provided on the main shaft, and a second fixing structure is provided on the protective cover, and the first fixing structure and the second fixing structure are fixedly connected in a clamping manner, so as to prevent the protective cover from moving back and forth along the axial direction of the main shaft. In addition, adopt the fixed connected mode of block between main shaft and the safety cover, can make things convenient for fiber connector's installation and dismantlement more, compare in threaded connection, can shorten the time of on-the-spot equipment and dismantling fiber connector greatly.

optionally, in some possible embodiments, the first fixing structure is a buckle, and the second fixing structure is a slot; or the first fixing structure is a clamping groove and the second fixing structure is a buckle. In this embodiment, a specific implementation manner of the first fixing structure and the second fixing structure is provided, which improves the realizability of the present solution.

Optionally, in some possible embodiments, the first fixing structure is a buckle, and is disposed on an end surface of the main shaft facing the protective cover; the second fixing structure is a clamping groove and is arranged on the end face, close to the fixing sleeve, of the cover body. In the embodiment, the buckle and the clamping groove are respectively arranged on the end surfaces of the main shaft and the cover body, so that the buckle and the clamping groove can be conveniently buckled, and the space is more compact.

optionally, in some possible embodiments, the optical fiber connector further includes a pin, the first fixing structure is a first insertion hole, the second fixing structure is a second insertion hole, and the pin is configured to be inserted into the first insertion hole and the second insertion hole. In this embodiment, another implementation manner of fixing the main shaft and the protective cover is provided, and the expandability of the scheme is improved.

Optionally, in some possible embodiments, the optical fiber connector further includes a snap spring, the first fixing structure is a first groove, the second fixing structure is a second groove, and the snap spring is configured to be inserted into the first groove and the second groove. In this embodiment, another implementation manner of fixing the main shaft and the protective cover is provided, and the expandability of the scheme is further improved.

Alternatively, in some possible embodiments, the end face of the main shaft facing the protective cover and the end face of the cover body close to the fixed sleeve are bonded together by glue. In this embodiment, except through setting up first fixed knot structure and second fixed knot structure, can also directly fix safety cover and main shaft through glue, improved the flexibility of this scheme.

Optionally, in some possible embodiments, a positioning key is arranged on the end surface of the main shaft facing the protective cover, and a positioning groove is arranged on the end surface of the cover body close to the fixed sleeve; or the end surface of the main shaft facing the protective cover is provided with a positioning groove, and the end surface of the cover body close to the fixed sleeve is provided with a positioning key; the positioning key is inserted into the positioning groove. In this embodiment, the sleeve is prevented from rotating within the spindle after it is inserted into the spindle and is further prevented from sliding within the spindle.

optionally, in some possible embodiments, the internal cavity of the harness mates with the FMC assembly to prevent the harness from rotating relative to the FMC assembly.

Optionally, in some possible embodiments, an end of the protective cover facing away from the main shaft is provided with an opening, so that a cross section of the end of the protective cover facing away from the main shaft is C-shaped, and the opening may be flared, that is, an end of the opening has an arc surface to play a role in guiding, which is beneficial to guiding the optical fiber connector to be inserted into the adapter.

Optionally, in some possible embodiments, an optical cable sealing ring is disposed outside an end of the optical cable close to the FMC component, so that external foreign matters, moisture, dust and the like can be prevented from entering the optical fiber connector through a gap between the optical cable and the tail sleeve or the main shaft, and a main shaft sealing ring is disposed outside an end of the main shaft close to the protective cover, so that external foreign matters, moisture, dust and the like are prevented from entering the optical fiber connector through a gap between the handle and the main shaft, and the optical fiber connector is better in sealing performance.

Optionally, in some possible embodiments, the optical fiber connector further includes a dust cap, and the dust cap is connected to an end of the handle away from the boot. The dust cap may function to protect the FMC assembly from dust and water prior to insertion of the fiber optic connector into the adapter.

Optionally, in some possible embodiments, a protruding locking structure is disposed on an inner wall of one end of the handle, which is far away from the tail sleeve, a locking groove is disposed on an outer surface of one end of the dust cap, the locking structure is used for being buckled with the locking groove, and a dust cap sealing ring is disposed on an outer portion of one end of the dust cap, which is close to the handle. The handle and the dustproof cap can be fixed by buckling the locking structure and the locking groove, and the dustproof cap sealing ring can ensure that the dustproof cap forms a good sealing effect when buckled with the handle.

Optionally, in some possible embodiments, an indication mark is arranged on the outer surface of one end of the handle away from the tail sleeve and used for indicating the connection state or the release state of the handle. The connection state of the optical fiber connector can be conveniently and visually known during field installation.

Optionally, in some possible embodiments, the outer surface of the handle near one end of the tail sleeve is formed with two symmetrical flattened planes, and the flattened planes are formed with grooves. When the operating handle is fixed with the dust cap, the operation handle can clamp the flattening plane to rotate, so that slipping is prevented. The grooves may further increase friction to increase handling.

In a second aspect, an embodiment of the present application provides an optical fiber connector, including an adapter and an optical fiber connector as in any one of the embodiments of the first aspect, where one end of the adapter is provided with a cavity and a slot surrounding the cavity, an FMC component of the optical fiber connector is inserted into the cavity of the adapter, and a protective cover of the optical fiber connector is inserted into the slot.

optionally, in some possible embodiments, an outer surface of one end of the adapter is provided with a sliding groove, and an inner wall of one end of the handle of the optical fiber connector, which is far away from the tail sleeve, is provided with a convex locking structure, and the locking structure is slidably connected to the sliding groove.

According to the technical scheme, the embodiment of the application has the following advantages:

The optical fiber connector in the embodiment of the application adopts the FMC component to access the optical cable, so that the optical cable with the actually required length can be flexibly cut by an installer according to the customer requirement or the actually required optical cable length of an installation site, the end part of the cut optical cable can be assembled on the installation site, for example, the optical fiber connector is assembled into the FMC component firstly, then the handle, the tail sleeve, the main shaft, the protective cover and the like are assembled with the FMC component, and the optical fiber connector is assembled on the site. Therefore, the optical cable length of the optical fiber connector in the embodiment can be flexibly set on a construction site, the optical cable is saved, and the assembly is convenient and fast. In addition, the optical fiber connector is assembled by arranging the main shaft, the protective cover, the handle and the tail sleeve outside the FMC assembly, so that the FMC assembly can be protected to meet the protection level of IP68, and the FMC assembly 150 is effectively protected, so that the optical fiber connector can be conveniently plugged and used with an adapter outdoors, and the optical fiber connector is simple, fast, safe and reliable to operate. In addition, the optical fiber connector of the FMC assembly can be assembled and disassembled on site, if the ferrule or the FMC assembly is damaged in the using process, only the FMC assembly needs to be replaced, the whole optical fiber connector with the optical cable does not need to be replaced, the later maintenance cost is greatly reduced, and the cost is saved.

Drawings

FIG. 1 is a diagram of a network architecture for use in the present application;

FIG. 2 is a schematic view of a fiber optic connector according to the present application;

FIG. 3 is a schematic diagram of an external structure of an optical fiber connector according to the present application;

FIG. 4 is an exploded view of the fiber optic connector of the present application;

FIG. 5 is a cross-sectional view of a fiber optic connector according to the present application;

FIG. 6a is an exploded view of an FMC assembly of the present application;

FIG. 6b is a cross-sectional view of an FMC assembly of the present application;

FIG. 7 is a schematic view of a crimp on a spindle according to the present application;

FIG. 8 is a schematic view of a locking structure on the handle of the present application;

FIG. 9 is a schematic view of a fiber optic connector with a dust cap according to the present application;

Fig. 10a is a schematic structural view illustrating a main shaft and a protective cover fixed by a buckle according to the present application;

FIG. 10b is a schematic view of a positioning groove of the spindle according to the present application;

FIG. 10c is a schematic view of the positioning key on the protective cover of the present application;

FIG. 11 is a schematic structural view of the spindle and the protective cover fixed by a pin in the present application;

Fig. 12 is a schematic structural view of the spindle and the protective cover fixed by the snap spring in the present application;

FIG. 13 is a schematic diagram of the construction of the adapter of the present application;

fig. 14 is an exploded view of an adapter of the present application.

Detailed Description

The embodiment of the application provides an optical fiber connector and an optical fiber connector, the optical fiber connector can be assembled on site, plug and play are realized, the optical cable length of the optical fiber connector can be flexibly arranged on the construction site, the optical cable is saved, and the assembly is convenient and fast.

For the convenience of understanding, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Fig. 1 is a portion of an optical network of FTTx, which may be FTTH (fiber to the home), FTTC (fiber to the curb ), FTTP (fiber to the premises), FTTN (fiber to the node or neighbor), FTTO office (fiber to the office), or FTTSA (fiber to the service area). Taking the FTTH network as an example, the FTTH includes, as seen from the downstream of a Central Office (CO), feeder links 1, 1: n splitter 2, distribution links 3, 1: m splitters 4, and at least one drop link 5, to which the optical fiber connector applied to the outdoor environment is applied in this application. Although the present application is exemplified with respect to one type of network for the FTTx architecture, other network architectures are also suitable.

Fig. 2 shows the optical fiber connector 10 of the present application, and as shown in fig. 2, the optical fiber connector 10 includes an optical fiber connector 100, an optical fiber connector 300, and an optical fiber adapter 200. The optical fiber connector 100 is connected to another optical fiber connector 300 through an optical fiber adapter 200, so as to realize the butt joint of the internal optical fibers.

Fig. 3 is a schematic diagram of an external structure of the optical fiber connector 100, and the optical fiber connector 100 includes a dust cap 110, a handle 120, a boot 130, and a cable 140 as viewed from the outside of the optical fiber connector 100 as a whole.

Fig. 4 is an exploded view of the optical fiber connector 100, and as can be seen from the internal structure, the optical fiber connector 100 further includes a field connector (FMC) assembly 150, a main shaft 160, and a protection cover 170, wherein the handle 120 and the tail sleeve 130 are disposed on the outer side of the main shaft 160 and the protection cover 170, and further the main shaft 160 and the protection cover 170 are disposed on the outer side of the FMC assembly 150.

Fig. 5 is a cross-sectional view of the optical fiber connector 100, one end of the optical cable 140 is connected to one end of the FMC assembly 150, and the optical cable 140 extends from the first end 150a of the FMC assembly 150, the FMC assembly 150 includes a ferrule 1501, the ferrule 1501 is disposed at the second end 150b of the FMC assembly 150, the spindle 160 is sleeved outside the first end 150a of the FMC assembly 150, the protection cover 170 is sleeved outside the second end 150b of the FMC assembly 150, and the spindle 160 is fixedly connected to the protection cover 170. The handle 120 is sleeved outside the main shaft 160 and the protective cover 170, the tail sleeve 130 is connected with one end of the main shaft 160 far away from the protective cover 170, and one end of the main shaft 16 far away from the protective cover 170 is used for fixing the optical cable 140.

Referring to the exploded view of the FMC module shown in fig. 6a and the cross-sectional view of the FMC module shown in fig. 6b, the FMC module 150 may include a ferrule 1501, a ferrule fixing portion 1502, a frame sleeve 1503, a base 1504, a spring 1505 and a FMC tail sleeve 1506, the optical fiber 140 is connected to the base 1504 and is stripped into optical fibers, and then the optical fibers penetrate through the ferrule fixing portion 1502 and are connected to the ferrule 1501, the ferrule fixing portion 1502 is used for fixing the ferrule 1501 and protecting the optical fibers, the frame sleeve 1503 is sleeved outside the ferrule 1501 and the ferrule fixing portion 1502, the frame sleeve 1503 is fixedly connected to one end of the base 1504 close to the ferrule 1501, one end of the base 1504 far from the ferrule 1501 is screwed to the FMC tail sleeve 1506, the spring 1505 is fixed to an inner wall of the base 1504, one end of the spring 1505 close to the ferrule 1501 is abutted to the ferrule fixing portion 1502 for supporting the ferrule 1501 and the ferrule fixing portion 1502 and.

Specifically, when the optical fiber connector is assembled on site by a worker, the optical fiber cable 140 with any length can be cut according to actual requirements, the optical fiber cable 140 is sequentially connected to the base 1504, the ferrule fixing portion 1502 and the ferrule 1501, the outer frame sleeve 1503 is sleeved on the outer sides of the ferrule 1501 and the ferrule fixing portion 1502 and is fixed to the base 1504, the FMC tail sleeve 1506 is sleeved on the outer side of the base 1504 and is screwed with the base 1504 through threads, the optical fiber cable 140 is connected to the FMC assembly 150, and the spindle 160, the protective cover 170, the handle 120 and the tail sleeve 130 are sleeved on the outer side of the FMC assembly 150 to complete the assembly of the optical fiber connector 100. It should be noted that the optical cable 140 in the present application may include various cable types, such as a butterfly cable, a round cable, and a flat cable, and is not limited herein.

In one embodiment, the protective cover 170 includes a cover 171 and a fixing sleeve 172 formed by extending one end of the cover 171, the fixing sleeve 172 is inserted into the main shaft 160, and the cover 171 is sleeved outside the ferrule 1501 to protect the ferrule 1501. When the optical fiber connector 100 is installed on site, the fixing sleeve 172 is inserted into the main shaft 160, so that the protection cover 170 can be quickly positioned, and the alignment between the axis of the protection cover 170 and the axis of the main shaft 160 can be quickly realized, and the optical fiber connector can be quickly installed. The cavity inside the fixture sleeve 172 may match the outer frame 1503 of the FMC assembly 150, for example, the cross section of the cavity inside the fixture sleeve 172 may be square, and the cross section of the outer frame 1503 of the FMC assembly 150 may also be square, and the two are matched in size, thereby preventing the fixture sleeve 172 from rotating relative to the FMC assembly 150.

For example, a manufacturer generally produces optical fiber connectors of various specifications, for example, the optical fiber connectors have optical fiber lengths of 50 meters, 100 meters, 200 meters and other specifications, if the optical fiber connectors are only 60 meters long, then in the construction process, the optical fiber connectors with optical fiber lengths of 100 meters still need to be equipped for customers, and thus, the optical fiber connectors of 40 meters long are inevitably wasted.

In the optical fiber connector 100 in the embodiment of the present application, since the FMC assembly 150 is used to access the optical cable 140, an installer can flexibly cut the optical cable to obtain an optical cable with an actually required length according to the optical cable length actually required by a customer or an installation site, and the end of the cut optical cable can be assembled on the installation site, for example, the optical fiber connector 100 is assembled in the FMC assembly 150, and then the handle 120, the tail sleeve 130, the spindle 160, the protection cover 170, and the like are assembled with the FMC assembly 150, so as to assemble the optical fiber connector 100 on the site. It can be seen that the optical cable length of the optical fiber connector 100 in this embodiment can be flexibly set at the construction site, which is beneficial to saving the optical cable and is convenient and fast to assemble. In addition, the main shaft 160, the protective cover 170, the handle 120 and the tail sleeve 130 are sleeved outside the FMC assembly 150 to assemble the optical fiber connector 100, so that the FMC assembly 150 can be protected to meet the protection level of IP68, and the FMC assembly 150 is effectively protected, so that the optical fiber connector 100 can be conveniently plugged and used with the adapter 200 outdoors, and the operation is simple, fast, safe and reliable. In addition, the optical fiber connector of the FMC assembly can be assembled and disassembled on site, if the ferrule or the FMC assembly is damaged in the using process, only the FMC assembly needs to be replaced, the whole optical fiber connector with the optical cable does not need to be replaced, the later maintenance cost is greatly reduced, and the cost is saved.

Referring to fig. 4 and 5, in an embodiment, a cable sealing ring 141 is disposed on an outer portion of an end of the optical cable 140 close to the FMC assembly 150, so as to prevent external foreign matters, moisture, dust, etc. from entering the optical fiber connector 100 through a gap between the optical cable 140 and the boot 130 or the spindle 160.

In an embodiment, a spindle sealing ring 164 is disposed on an outer portion of the spindle 160 near an end of the protective cover 170, so as to prevent external foreign objects, moisture, dust, etc. from entering the optical fiber connector 100 through a gap between the handle 120 and the spindle 160, thereby improving the sealing performance of the optical fiber connector 100.

In an embodiment, a shoulder 161 is formed on an inner wall of one end of the main shaft 160 far away from the protective cover 170, and the shoulder 161 abuts against the first end 150a of the FMC assembly 150, so that the FMC assembly 150 can be prevented from sliding in a direction far away from the protective cover 170 along the axial direction of the main shaft 160, and the FMC assembly 150 is limited.

in one embodiment, an end of the main shaft 160 away from the protective cover 170 includes a fixing portion 162 and a crimping structure 163 formed by extending an end surface of the fixing portion 162, the fixing portion 162 and the crimping structure 163 are sleeved outside the optical cable 140, an outer wall of the fixing portion 162 is formed with an external thread, an inner wall of the tail sleeve 130 is provided with an internal thread, the tail sleeve 130 is sleeved outside the fixing portion 162 and the crimping structure 163, and the internal thread of the tail sleeve 130 is screwed with the external thread of the fixing portion 162, so that the crimping structure 163 fixes the optical cable 140.

Referring to fig. 7, in an embodiment, the pressing structure 163 may include two cantilever beams 1631, fixed ends of the two cantilever beams 1631 are connected to the fixing portion 162, and inner walls of movable ends of the two cantilever beams 1631 are respectively provided with bump structures 1632, where the number of the bump structures 1632 is not limited herein. The inner cavity of the tail sleeve 130 may be slightly smaller than the periphery of the two cantilever beams 1631 formed in a natural state, and then in the process of screwing the internal thread on the tail sleeve 130 and the external thread on the fixing portion 162, the movable ends of the two cantilever beams 1631 are pressed towards the optical cable 140 to clamp the optical cable 140, wherein the bump structure 1632 may increase the tensile strength of the optical cable 140. Since the optical cable 140 is connected to the FMC assembly 150 and the optical cable 140 is compressed by the crimping structure 163 on the main shaft 160, the FMC assembly 150 is prevented from moving back and forth within the main shaft 160 in the axial direction of the main shaft 160. It should be noted that the crimping structure 163 may include a greater number of cantilever beams 1631, such as three, four, etc., which is not limited herein. In other embodiments, the crimping structure 163 may also be a cylindrical structure, and the cylindrical structure is made of an elastic material, the inner cavity of the tail sleeve 130 may be slightly smaller than the outer periphery of the cylindrical structure, and during the process of screwing the internal thread on the tail sleeve 130 and the external thread on the fixing portion 162, the tail sleeve 130 may press the elastic crimping structure 163, so as to fix the optical cable 140.

in one embodiment, the handle 120 is a cylindrical structure having a step surface therein, wherein the step surface inside the handle 120 abuts against one end of the main shaft 160 close to the protection cover 170 to prevent the handle 120 from sliding in a direction away from the tail sleeve 130, and after the tail sleeve 130 is screwed to the fixing portion 162, the tail sleeve 130 can abut against the handle 120 to prevent the handle 120 from sliding in a direction close to the tail sleeve 130. In addition to the above-mentioned manners, there may be other manners for fixing the handle 120, for example, the outer surface of the main shaft 160 is provided with a sliding groove, the inner surface of the handle 120 is provided with a flange, and the flange can be engaged with the sliding groove by rotating the handle to fix the handle, which is not limited herein.

Referring to fig. 8, in an embodiment, a protruding locking structure 1201 is disposed on an inner wall of an end of the handle 120 away from the tail sleeve 130, and the locking structure 1201 may be a cylindrical protrusion, and the number of the locking structures may be 1 or more, and is not limited herein.

Referring to fig. 9, in an embodiment, the dust cap 110 is tied to the fiber connector 100 by a string, and the dust cap 110 is mainly used to prevent dust and water and protect the FMC assembly 150 before the fiber connector 100 is inserted into the adapter 200. In order to provide a good sealing function when the dust cap 110 is engaged with the handle 120, a dust cap sealing ring 111 is provided outside the dust cap 110. One end of the dust cap 110 is opened with a receiving cavity of the optical fiber connector 110, which extends along the axial direction of the dust cap 110 and can receive the end of the optical fiber connector 100 where the protection cover 170 and the FMC assembly 150 are connected to the outside. The outer surface of the dust cap 110 is provided with at least one locking groove 112, the number of the locking grooves 112 is the same as the number of the locking structures 1201 on the handle 120, and the locking structures 1201 are used for being buckled with the locking grooves 112 so as to fix the dust cap 110 and the handle 120.

in one embodiment, an indicator 121 is disposed on an outer surface of the end of the handle 120 away from the boot 130 to indicate the connection or disconnection state of the handle 120. The outer surface of the handle 120 near one end of the tail sleeve 130 is provided with a flat plane 122, and when the operating handle 120 is fixed with the dust cap 110, the flat plane 122 can be clamped to rotate, so that slipping is prevented. To further increase the friction force, anti-slip grooves may be formed on the flattened surface 122 to increase the handling feeling. It should be noted that the flattened plane 122 may be a symmetrical pair, or may be a symmetrical plurality of pairs, such as two pairs, three pairs, and the like, and is not limited herein.

Referring to fig. 10a, in an embodiment, an end of the protection cover 170 facing away from the main shaft 160 is provided with an opening 1703, so that a cross section of the end of the protection cover 170 facing away from the main shaft 160 is C-shaped, that is, the protection cover 170 is a C-shaped cover having an opening 1703 on a peripheral surface.

of course, in other embodiments, the circumferential surface of the protection cover 170 may also have more than one opening 1703, for example, 2 openings, 3 openings, etc., which is not limited herein. The opening 1703 may be flared, that is, the end of the opening 1703 has an arc surface to provide a guiding function, which is beneficial to guiding the insertion of the optical fiber connector 100 into the adapter 200.

In one embodiment, in order to prevent the boot 170 from moving along the axial direction of the spindle 160 while protecting the FMC assembly 150, the fixing sleeve 172 is inserted into the spindle 160, and a first fixing structure 1601 is disposed on an end surface of the spindle close to the boot 170, and a second fixing structure 1701 is disposed on an end surface of the boot 171 close to the fixing sleeve 172, and the first fixing structure 1601 is engaged with the second fixing structure 1701, so that the spindle 160 is fixedly connected with the boot 170. Adopt the fixed connected mode of block between main shaft and the safety cover, can make things convenient for fiber connector's installation and dismantlement more, compare in main shaft and the safety cover fiber connector who adopts threaded connection, can shorten the time of field assembly and dismantlement fiber connector greatly. Through experiments, the installation and removal time of the optical fiber connector provided by the embodiment is only 1/5 of the installation and removal time of the optical fiber connector adopting the threaded connection mode.

It will be appreciated that the sleeve 172 has an outer diameter less than the outer diameter of the cover 171 in order to allow the sleeve 172 to be inserted into the spindle 160 and to facilitate the provision of the second fixing structure 1701. In addition, the first fixing structure 1601 may be disposed at any position on the end surface of the spindle 160, and the second fixing structure 1701 may be disposed at any position on the end surface of the cover 171, such as a C-shaped cover, and the second fixing structure 1701 may be disposed at a position corresponding to the opening 1703 on the end surface of the cover 171.

Referring to fig. 10b and fig. 10c, in an embodiment, in order to prevent the fixing sleeve 171 from rotating in the main shaft 160 after being inserted into the main shaft 160 and further prevent the fixing sleeve 171 from sliding in the main shaft 160, a positioning groove 1602 is disposed on an end surface of the main shaft 160 close to the protection cover 170, and a positioning key 1702 is disposed on an end surface of the cover 171 close to the fixing sleeve 172, where the positioning key 1702 may be inserted into the positioning groove 1602, or an end surface of the main shaft 160 close to the protection cover 170 may be disposed with a positioning key 1702, and an end surface of the cover 171 close to the fixing sleeve 172 is disposed with a positioning groove 1602, and the positioning key 1702 and the positioning groove 1602 may be a group or multiple groups.

The first fixing structure 1601 and the second fixing structure 1701 may be implemented in various ways, and the following descriptions are provided:

Referring to fig. 10a, in an embodiment, the first fixing structure 1601 may be a buckle, the second fixing structure 1701 may be a slot, and the buckle and the slot are buckled to fix the main shaft 160 and the protection cover 170, besides, the first fixing structure 1601 may also be a slot, and the second fixing structure 1701 may be a buckle, and the buckle and the corresponding slot may be provided in one set or in multiple sets, which is not limited herein.

referring to fig. 11, in an embodiment, the optical fiber connector 100 may further include a pin 180, the first fixing structure 1601 may be a first insertion hole, the second fixing structure 1701 may be a second insertion hole, and the pin 180 may be inserted into the first insertion hole and the second insertion hole to fix the first insertion hole and the second insertion hole.

Referring to fig. 12, in an embodiment, the optical fiber connector may further include a clamp spring 190, the first fixing structure 1601 may be a first groove, and the second fixing structure 1701 may be a second groove, and the clamp spring 190 may be inserted into the first groove and the second groove to fix the first groove and the second groove.

In addition to the above-mentioned several ways, there may be other ways to fix the protective cover 170 to the main shaft 160, for example, an end surface of the main shaft 160 facing the protective cover 170 may be bonded to an end surface of the cover 171 close to the fixing sleeve 172 by glue, and this is not limited herein.

Having described the fiber optic connector 100 in the embodiment of the present application, the fiber optic connector 10 of the present application is described as follows:

As shown in fig. 2, the optical fiber connector 10 includes an adapter 200 in addition to the optical fiber connector 100 described above. Referring now to fig. 13, a receptacle 201 is provided at one end of the fiber optic adapter 200.

The socket 201 is provided with a cavity 2011 and a slot 2012, the cavity 2011 is located in the middle of the socket 201, and the cavity 2011 and the slot 2012 extend axially along the socket 201. The slot 2012 surrounds the periphery of the cavity 2011. The FMC assembly 150 of the fiber connector 100 may be inserted into the cavity 2011 and the boot 170 of the fiber connector 100 may be inserted into the slot 2012. If the protection cover 170 is a C-shaped cover, the insertion groove 2012 can further be provided with a strip-shaped protrusion 2014 extending along the axial direction of the receptacle 201, so that the cross section of the insertion groove 2012 forms a C shape, the strip-shaped protrusion 2014 is equivalent to the opening width of the C-shaped cover, the insertion groove 2012 can be seamlessly connected with the C-shaped cover, the blind insertion of the optical fiber connector 100 is realized, the operation is simpler and more convenient, and the plug and play of the optical fiber connector 10 can be further realized.

In an embodiment, a second sliding groove 2015 is formed in the periphery of the optical fiber receptacle 201, the sliding groove 2015 is spiral, the sliding groove 2015 extends from one end of the receptacle 201 along the circumferential direction of the receptacle 201, and the extending end of the sliding groove 2015 is engaged with the locking structure 1201 on the handle 120. The outer surface of the optical fiber socket 201 is provided with an arrow mark and a mark "0" or "1", when the optical fiber connector 100 is inserted into the optical fiber socket 201, the mark 121 on the handle 120 should be aligned with the arrow mark of the socket 201, and when the optical fiber connector 100 is screwed towards the direction "0", the optical fiber connector 100 is in a locked state; when twisted in the direction of "1", the fiber connector 100 is in a released state. In this embodiment, the sliding groove 2015 may be identical to the locking groove 112 of the dust cap 110 in shape.

Referring to the exploded view of the adapter 200 shown in FIG. 14, in one embodiment, the fiber optic adapter 200 includes an O-ring 222, a retaining nut 220, an O-ring 240, a receptacle body 210, and a ceramic ferrule 212. The O-ring 240, the lock nut 220, and the O-ring 222 are sequentially sleeved on the socket body 210, the ceramic sleeve 212 is inserted into the other end of the socket body 210 and fastened by the O-ring 222, one end of the socket body 210 is provided with the socket 201, the other end of the socket body 210 is provided with the socket 202, the sockets 201 and 202, and the ceramic sleeve 212 placed at the center thereof, and they are welded together by ultrasonic waves.

In one embodiment, the fiber optic adapter 200 includes an adapter dust cap 230, and an end of the adapter dust cap 230 defines an adapter receiving cavity for receiving the fiber optic adapter 200, the receiving cavity being configured to receive the receptacle 201 when the fiber optic adapter 200 is inserted into the dust cap 230.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.