CN217112811U

CN217112811U - Optical fiber connector

Info

Publication number: CN217112811U
Application number: CN202221028026.3U
Authority: CN
Inventors: 邹峰; 黄美金; 刘�文; 孙莹; 郑涛
Original assignee: Fiberhome Telecommunication Technologies Co Ltd
Current assignee: Fiberhome Telecommunication Technologies Co Ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-08-02
Anticipated expiration: 2032-04-28

Abstract

The utility model relates to an optical fiber connector, it includes: the connector comprises a connector body, a connector body and a connector, wherein an optical cable is fixedly arranged in the connector body, and a switching nut is detachably connected to the connector body; at least two adapters, each adapter having an adapter mounting portion for mounting to the adapter nut, and each adapter having an abutment portion for mating with an adapter, the abutment portions of at least two adapters differing in cross-sectional shape and; the at least one adapter comprises an elastic part and a lock tongue, wherein the elastic part and the lock tongue are sleeved on the butt joint part, and the lock tongue can move along the axial direction of the adapter; when the adapter is locked with the adapter, the elastic piece drives the bolt to be stopped at the outer side of the locking position of the adapter and the adapter; when the lock tongue is moved towards the direction close to the elastic piece, the elastic piece is compressed, and the adapter piece is unlocked with the adapter; compatibility of the pre-terminated fiber optic cable with different adapter types may be achieved.

Description

Optical fiber connector

Technical Field

The utility model relates to an optical fiber communication technical field, in particular to fiber connector.

Background

With the development of optical fiber connectors, more and more enterprises have formulated their own interface standards for outdoor waterproof optical fiber connection assemblies.

In the related art, when laying a pre-finished end ODN network, a network builder usually deploys a pre-finished end box (tape adapter) in advance, and purchases a pre-finished end optical cable (tape connector) gradually for opening along with the opening of a user at a later stage. However, because the interface standards of each manufacturer are different, before purchasing the optical cable (with connector), the network constructor needs to go to the field to investigate the type of the adapter on the laid box body in advance, determine the interface type of the connector according to the investigation condition, and then purchase and open the optical cable. This mode causes a great waste of manpower and cost for the network constructor and causes difficulties in material management.

Therefore, there is a need to design a new optical fiber connector to overcome the above problems.

SUMMERY OF THE UTILITY MODEL

An embodiment of the utility model provides an optical fiber connector to lead to bringing very big manpower and cost for the network builder because of the interface difference among the solution correlation technique is extravagant, and cause the problem of the difficulty in the material management.

In a first aspect, there is provided an optical fiber connector comprising: the connector comprises a connector body, a connector body and a connector, wherein an optical cable is fixedly arranged in the connector body, and a switching nut is detachably connected to the connector body; at least two adapters, each adapter having an adapter mounting portion for mounting to the adapter nut, and each adapter having an abutment portion for mating with an adapter, the abutment portions of at least two adapters differing in cross-sectional shape and; the at least one adapter comprises an elastic part and a lock tongue, wherein the elastic part and the lock tongue are sleeved on the butt joint part, and the lock tongue can move along the axial direction of the adapter; when the adapter is locked with the adapter, the elastic piece drives the bolt to be stopped at the outer side of the locking position of the adapter and the adapter; when the lock tongue is moved towards the direction close to the elastic piece, the elastic piece is compressed, and the adapter piece and the adapter are unlocked.

In some embodiments, the at least two adapters include a first adapter, the first adapter includes a first liner, one end of the first liner is provided with the adapter mounting portion, the other end of the first liner is provided with the butt joint portion, and the cross section of the butt joint portion is C-shaped.

In some embodiments, the first adapter further comprises: the first shell is sleeved outside the first lining, a first salient point is arranged on one side, close to the butt joint part, in the first shell, and a first sealing ring is arranged between the first shell and the first lining; the first traction cap is provided with a first groove matched with the first salient point, the first traction cap is connected with the connector main body through a connecting rope, and a second sealing ring is arranged between the first traction cap and the first shell; the first dustproof cap is installed at one end, far away from the first traction cap, of the first lining, and the first dustproof cap is matched with the switching installation part.

In some embodiments, the at least two adapters comprise a second adapter comprising: the butt joint part is arranged at one end of the second lining, the cross section of the butt joint part comprises an arc-shaped section and at least two straight line sections, and the at least two straight line sections are positioned on the same side of the arc-shaped section; and the second shell is sleeved outside the second lining, and the end, far away from the butt joint part, of the second shell is provided with the switching installation part.

In some embodiments, a second protruding point is arranged on one side of the second outer shell, which is close to the butt joint part, and a third sealing ring is arranged between the second outer shell and the second inner liner; the second adaptor further comprises: the second traction cap is provided with a second groove matched with the second salient point, and the second traction cap is connected with the connector main body through a connecting rope; and the second dustproof cap is arranged at one end, far away from the second traction cap, of the second shell, and is matched with the switching installation part.

In some embodiments, the at least two adapters include a third adapter comprising: the butt joint part is arranged at one end of the third lining, the cross section of the butt joint part is D-shaped, and the switching installation part is arranged at the other end of the third lining; the third shell is sleeved outside the third lining, and a threaded connecting part is arranged on one side, close to the butt joint part, of the third shell; and the third traction cap is in threaded connection with the threaded connection part, is connected with the connector main body through a connection rope, and is provided with a sixth sealing ring between the third traction cap and the third lining.

In some embodiments, the at least two adapters include a fourth adapter comprising: the adapter mounting part is arranged at one end of the fourth lining, the butt joint part is arranged at the other end of the fourth lining, the cross section of the butt joint part comprises at least two arc sections and at least two straight sections, and the straight sections and the arc sections are arranged in a staggered mode; and the fourth shell is sleeved outside the fourth lining, and a fourth sealing ring is arranged between the fourth shell and the fourth lining.

In some embodiments, the fourth liner is provided with a locking groove; the fourth adaptor further comprises: the fourth traction cap is provided with a locking arm matched with the locking groove, the fourth traction cap is connected with the connector main body through a connecting rope, and a fifth sealing ring is arranged between the fourth traction cap and the fourth shell; and the fourth dustproof cap is arranged at one end, far away from the fourth traction cap, of the fourth lining, and the fourth dustproof cap is matched with the switching installation part.

In some embodiments, the adaptor further includes a housing sleeved outside the bolt, the housing is capable of moving along the axial direction of the adaptor, and a first protrusion is disposed in the housing; and a second bulge which is used for limiting and is matched with the first bulge is arranged on the butt joint part.

In some embodiments, the locking bolt comprises: an annular body for cooperating with the first protrusion to move the latch bolt with the housing and compress the elastic member; the extension part is arranged on the annular body and extends towards one axial side of the annular body, and the extension part is used for being stopped at the outer side of the locking arm of the adapter.

In some embodiments, the first protrusion includes two extension arms, the two extension arms are disposed on the inner wall of the housing and extend toward the axial direction of the housing, and the two extension arms are spaced apart from each other to form a channel for the extension to pass through.

In some embodiments, the abutting portion is further provided with a third protrusion, one end of the elastic member abuts against the annular body, and the other end of the elastic member abuts against the third protrusion.

The utility model provides a beneficial effect that technical scheme brought includes:

the embodiment of the utility model provides an optical fiber connector, owing to set up two at least different adaptor, different adaptors all can be installed on the switching nut through the switching installation department, and set up different butt joint portion on the adaptor of difference, can match the butt joint with different adapters, therefore, can realize taking in advance the adapter type of end optical cable compatible difference, thereby reduce the on-the-spot investigation of early stage, material management etc. cost, and simultaneously, after setting up elastic component and spring bolt on the adaptor, when connector and adapter butt joint, under the drive of elastic component, the spring bolt will be stopped in the outside of adapter locking department, stop adapter and connector and break away from, when removing the spring bolt to the direction that is close to the elastic component, the spring bolt shifts out the outside of adapter, adaptor and adapter can the unblock.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an optical fiber connector according to an embodiment of the present invention, which has two adapters;

fig. 2 is a schematic structural diagram of an optical fiber connector according to an embodiment of the present invention, wherein the optical fiber connector has three adapters;

fig. 3 is a schematic structural diagram of an optical fiber connector according to an embodiment of the present invention, which has four adapters;

fig. 4 is a schematic structural diagram of an optical fiber connector according to an embodiment of the present invention, which has an adaptor;

fig. 5 is a schematic structural diagram of a connector body according to an embodiment of the present invention when the connector body is a round cable;

FIG. 6 is an exploded view of the connector body of FIG. 5;

fig. 7 is a schematic structural diagram of a connector body provided in an embodiment of the present invention as a butterfly cable;

FIG. 8 is an exploded view of the connector body of FIG. 7;

fig. 9 is an exploded schematic view of an optical fiber connector according to an embodiment of the present invention;

fig. 10 is a schematic structural diagram of a first adapter according to an embodiment of the present invention;

fig. 11 is an exploded schematic view of a first adapter according to an embodiment of the present invention;

fig. 12 is a schematic cross-sectional structural view of a first adapter according to an embodiment of the present invention;

fig. 13 is a schematic structural view of a second adaptor according to an embodiment of the present invention;

fig. 14 is an exploded schematic view of a second adaptor according to an embodiment of the present invention;

fig. 15 is a schematic cross-sectional structural view of a second adaptor according to an embodiment of the present invention;

fig. 16 is a schematic structural view of a third adaptor according to an embodiment of the present invention;

fig. 17 is an exploded schematic view of a third adaptor according to an embodiment of the present invention;

fig. 18 is a schematic cross-sectional structural view of a third adaptor according to an embodiment of the present invention;

fig. 19 is a schematic structural view of a fourth adaptor according to an embodiment of the present invention;

fig. 20 is an exploded schematic view of a fourth adaptor according to an embodiment of the present invention;

fig. 21 is a schematic cross-sectional structural view of a fourth adaptor according to an embodiment of the present invention;

fig. 22 is a schematic cross-sectional view of a fourth adaptor according to an embodiment of the present invention mounted on the connector body;

fig. 23 is an internal structural schematic diagram of a fourth housing according to an embodiment of the present invention.

In the figure:

1. a connector body; 11. a switching nut; 12. connecting ropes;

13. a plug; 131. inserting a core; 132. a spring; 133. a front sleeve; 134. a rear sleeve; 135. an aluminum cup; 136. heat shrink tubing;

14. a waterproof gasket; 15. a tail sheath; 16. a fifth dust cap; 17. an optical cable; 18. a clamping body; 19. a common dust cap;

2. an adapter; 21. a transfer mounting part; 22. a docking portion; 221. a second protrusion; 222. a third protrusion; 223. locking the groove;

23. a first transfer member; 231. a first liner; 232. a first housing; 233. a first seal ring; 234. a first seal groove; 235. a first traction cap; 236. a second seal ring; 237. a second seal groove; 238. a first dust cap;

24. a second adaptor; 241. a second liner; 242. a second housing; 243. a second bump; 244. a third seal ring; 245. a third seal groove; 246. a second traction cap; 247. a second dust cap;

25. a third adaptor; 251. a third liner; 252. a sixth seal groove; 253. a sixth seal ring; 254. a third housing; 255. a third traction cap; 256. a third dust cap;

26. a fourth adaptor; 261. a fourth liner; 262. a fourth housing; 2621. an elastic member; 2622. a latch bolt; 26221. an annular body; 26222. an extension portion; 2623. a first protrusion; 263. a fourth seal ring; 264. a fourth seal groove; 265. pulling a rope; 266. a fourth traction cap; 2661. a locking arm; 267. a fifth seal ring; 268. a fourth dust cap; 27. an air avoidance surface; 28. and (5) avoiding empty space.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

An embodiment of the utility model provides an optical fiber connector, it can solve among the correlation technique because of the interface difference leads to bringing very big manpower and cost extravagant for the network builder to and cause the problem of the difficulty in the material management.

Referring to fig. 1 to 4, an optical fiber connector according to an embodiment of the present invention may include: the connector comprises a connector body 1, wherein an optical cable 17 is fixedly arranged inside the connector body 1, wherein the optical cable 17 can be a round optical cable 17 or a butterfly optical cable 17; the connector body 1 is detachably connected with a switching nut 11, the connector body 1 may be provided with a connecting rope 12, wherein the connecting rope 12 may be sleeved on the connector body 1, so that one end of the connecting rope 12 is connected with the connector body 1, and of course, in other embodiments, the connector body 1 may not be provided with the connecting rope 12; the adapter 2 can be connected with the connector body 1 through the connecting rope 12, wherein each adapter 2 can be correspondingly connected with the connector body 1 through one connecting rope 12, so that each adapter 2 is independent from each other, and the adapter 2 can be arranged independently without being connected with the connector body 1; each adapter 2 may have an adapter mounting portion 21 for mounting to the adapter nut 11, that is, the structure of the adapter mounting portion 21 on each adapter 2 may be substantially the same, so that the adapter mounting portion 21 of any one adapter 2 can be screwed onto the same adapter nut 11 to share the adapter nut 11, and each adapter 2 may have an abutting portion 22 for engaging with an adapter, so that when any one adapter 2 is mounted on the connector body 1, the abutting portion 22 of the corresponding adapter 2 can be abutted and positioned with the corresponding adapter; the cross-sectional shapes of the abutting parts 22 of at least two adapters 2 are different, that is, the structures of the abutting parts 22 of at least two adapters 2 can be different, so that the abutting parts 22 with different structures can be respectively matched with adapters of different types.

Further, referring to fig. 20, at least one of the adapters 2 may include an elastic member 2621 and a locking tongue 2622 sleeved on the abutting portion 22, the locking tongue 2622 may move along an axial direction of the adapter 2, wherein the elastic member 2621 and the locking tongue 2622 may be arranged side by side along the axial direction of the abutting portion 22; when the adaptor 2 is locked with the adapter, the elastic piece 2621 drives the locking tongue 2622 to be stopped at the outer side of the adaptor 2 and the adapter; specifically, the butt joint part 22 can be provided with a locking groove 223, the adapter is provided with a locking arm matched with the locking groove 223, after the connector and the adapter are plugged and locked, the locking arm of the adapter is buckled in the locking groove 223, and meanwhile, under the elastic force of the elastic piece 2621, the elastic piece 2621 pushes the lock tongue 2622 to move towards the direction close to the adapter and stop at the outer side of the locking arm to prevent the locking arm from popping out of the locking groove 223, so that the locking arm of the adapter cannot expand and deform, further, firm tensile force is ensured, and the locking force required by most outdoor type pre-forming connectors can be met; when moving the spring bolt 2622 to the direction that is close to the elastic component 2621, the elastic component 2621 compresses, and spring bolt 2622 also moves to the direction of keeping away from the adapter simultaneously, and spring bolt 2622 breaks away from the outside of locking arm, and the locking arm can outwards pop out the locked groove 223, adaptor 2 can with the adapter unblock.

In this embodiment, since one end of the connector body 1 can be connected to at least two different adapters 2, the different adapters 2 can be mounted on the adapter nut 11 of the connector body 1 through the same adapter mounting portion 21, so as to share the adapter nut 11, and different docking portions 22 can be disposed on the different adapters 2, wherein the structural shape of the docking portion 22 can be designed according to different adapters, so that the different docking portions 22 can be docked with different adapters, therefore, when the connector is docked with an adapter on site, different adapters 2 can be selected according to different adapter types, and the pre-forming end optical cable 17 can be compatible with different adapter types by replacing the conversion component on site, thereby reducing the cost of previous site investigation, material management and the like, and meanwhile, the adapters 2 and the connector body 1 are integrally designed through the connecting rope 12, the portable improves the efficiency of construction.

In some embodiments, referring to fig. 5 and 6, the connector body 1 may include a plug 13, wherein the plug 13 has a cavity therein, the cavity may accommodate the optical fiber of the optical cable 17, the cavity may further have a ferrule 131 and a spring 132 therein, the patch nut 11 is sleeved outside the plug 13, the plug 13 may further be sleeved with a common dust cap 19 engaged with the patch nut 11, the common dust cap 19 may be engaged with the patch nut 11 by a thread, or may be connected by a snap fit, and a waterproof gasket 14 is disposed between the common dust cap 19 and the plug 13, so that the connector has a waterproof function.

Further, as shown in fig. 5 and fig. 6, when the optical cable 17 is a round cable, a front sleeve 133 may be further disposed in the cavity, a rear sleeve 134 may be further connected to the rear end of the plug 13, a front portion of the rear sleeve 134 may be rotatably inserted into the cavity of the plug 13 to be in threaded connection with the plug 13, the rear sleeve 134 may fix the ferrule 131, the spring 132, and the front sleeve 133 in the cavity, an aluminum cup 135 may be disposed outside the round cable and the rear sleeve 134, the round cable and the rear sleeve 134 are stably connected by pressure welding of the aluminum cup 135, the aluminum cup 135 may function to fix the round cable and the rear sleeve 134, a heat shrinkable tube 136 may be sleeved outside the aluminum cup 135 and the round cable, the heat shrinkable tube 136 is bonded to the aluminum cup 135 and the round cable to function to seal, the rear portion of the plug 13 may be sleeved with the adapting nut 11 and the tail sheath 15, the tail sheath 15 may clamp the adapting nut 11 between the plug 13 and the tail sheath 15, the adapting nut 11 can rotate freely around the axis of the plug 13 outside the plug 13, the front end of the plug 13 can be inserted with the fifth dust cap 16, and the fifth dust cap 16 is inserted in the inserting core 131 to play a role in protection.

Referring to fig. 7 and 8, when the optical cable 17 is a butterfly cable, a clamping body 18 may be further disposed in the cavity, the butterfly cable is adhered in the clamping body 18, the clamping body 18 is rotated, a protruding portion on the clamping body 18 may be inserted into a window of the plug 13, so as to fix the clamping body 18 and the plug 13, a front end of the plug 13 may further be provided with a front sleeve 133, and after the ferrule 131 and the spring 132 are placed in the cavity at the front end of the plug 13, the front sleeve 133 is pressed after the adhesive is cured, so that the front sleeve 133 is fixed with the plug 13; the heat shrink tube 136 can be sleeved outside the clamping body 18 and the butterfly cable, the heat shrink tube 136 is bonded with the clamping body 18 and the butterfly cable after being shrunk, a sealing effect is achieved, the adapting nut 11 and the tail sheath 15 can be sleeved on the rear portion of the plug 13, the adapting nut 11 is clamped between the plug 13 and the tail sheath 15 through the tail sheath 15, the adapting nut 11 can rotate around the axis of the plug 13 outside the plug 13 at will, the fifth dust cap 16 can be inserted at the front end of the plug 13, the fifth dust cap 16 is inserted in the insertion core 131, and a protection effect is achieved.

Referring to fig. 9 to 12, in some embodiments, the at least two adapters 2 may include a first adapter 23, that is, at least one of the adapters 2 connected to the connector body 1 is the first adapter 23, where the first adapter 23 may include a first liner 231, one end of the first liner 231 is provided with the adapter mounting portion 21, the other end of the first liner 231 is provided with the abutment portion 22, the abutment portion 22 may be C-shaped in cross section, and both the abutment portion 22 and the adapter mounting portion 21 may be integrally formed with the first liner 231, and by providing the C-shaped abutment portion 22, when the first adapter 23 is mounted to the connector body 1, the connector body 1 may be capable of being abutted with an adapter having a C-shaped socket. Of course, in addition to the first adapter 23, the connector body 1 may be connected to another type of adapter 2 having the same or different interface portion 22 as the first adapter 23, such as a second adapter 24, a third adapter 25, or a fourth adapter 26.

On the basis of the above technical solution, the first adapter 23 may further include: a first outer shell 232 sleeved outside the first inner liner 231, wherein a first salient point is arranged on one side of the first outer shell 232 close to the butt joint portion 22, and a first sealing ring 233 is arranged between the first outer shell 232 and the first inner liner 231, wherein a first sealing groove 234 is arranged on the first inner liner 231, and the first sealing ring 233 is accommodated in the first sealing groove 234, so that the first sealing ring 233 is clamped between the first inner liner 231 and the first outer shell 232; the first traction cap 235 is provided with a first groove matched with the first salient point, the first traction cap 235 is rotated to enable the first salient point to enter the first groove, so that the first traction cap 235 and the first shell 232 are locked, the first traction cap 235 can be connected with the connecting rope 12, a second sealing ring 236 is arranged between the first traction cap 235 and the first shell 232, namely a second sealing groove 237 is formed in the first traction cap 235, and the second sealing ring 236 is installed in the second sealing groove 237; and first dustproof cap 238, it can install in first inside lining 231 keeps away from first one end of pulling cap 235, just first dustproof cap 238 with the cooperation of switching installation department 21, promptly, when switching installation department 21 is the internal thread, first dustproof cap 238 is equipped with the external screw thread for first dustproof cap 238 and switching installation department 21 threaded connection have realized the sharing at connection position, realize simultaneously that the independence of adaptor 2 is dustproof with pull, and set up first sealing washer 233 and second sealing washer 236 and guaranteed outdoor water-proof effects.

Referring to fig. 13-15, in some embodiments, the at least two adapters 2 may include a second adapter 24, and the second adapter 24 may include: the butt joint part 22 is arranged at one end of the second liner 241, the cross section of the butt joint part 22 includes an arc-shaped section and at least two straight line sections, the at least two straight line sections are located on the same side of the arc-shaped section, that is, the structural shape of the butt joint part 22 is that two parts are cut off on the same side to form two planes, and a sharp corner is formed between the two planes, so that the butt joint part 22 of the second adaptor 24 is matched with the shape of the slot of the adaptor, and when the second adaptor 24 is installed on the connector body 1, the connector body 1 can be matched and butted with the slot of the adaptor; and the second shell 242 is sleeved outside the second liner 241, one end of the second shell 242, which is far away from the butt joint portion 22, is provided with the adapter installation portion 21, and the butt joint portion 22 with a special cross-sectional shape is arranged, so that when the second adapter 24 is installed on the connector body 1, the connector body 1 can be butted with an adapter matched with the shape of the slot. Of course, in addition to the second adapter 24, the connector body 1 may be connected to another type of adapter 2 having the same or different interface portion 22 as the second adapter 24, such as a first adapter 23, a third adapter 25, or a fourth adapter 26.

On the basis of the above technical solution, referring to fig. 13 to 14, a second salient point 243 is disposed on a side of the second outer shell 242 close to the abutting portion 22, that is, the second salient point 243 is preferably disposed on an outer portion of the second outer shell 242, and a third sealing ring 244 is disposed between the second outer shell 242 and the second inner liner 241, wherein the second inner liner 241 is provided with a third sealing groove 245, the third sealing ring 244 is accommodated in the third sealing groove 245, and the third sealing ring 244 is sandwiched between the second inner liner 241 and the second outer shell 242, so as to realize the sealing between the second inner liner 241 and the second outer shell 242, the second adaptor 24 may further include: a second pulling cap 246, which is provided with a second groove matched with the second salient point 243, and the second pulling cap 246 is rotated to lock the second pulling cap 246 and the second shell 242 through the matching of the second salient point 243 and the second groove, wherein the second pulling cap 246 is connected with the connecting rope 12; and the second dustproof cap 247, it can install in the second shell 242 is kept away from the second draws the one end of cap 246, just the second dustproof cap 247 with the cooperation of switching installation department 21, also be when switching installation department 21 is the internal thread, the second dustproof cap 247 is equipped with the external screw thread for the second dustproof cap 247 and switching installation department 21 threaded connection have realized the sharing of joint, realize simultaneously that the independence of adaptor 2 is dustproof and draw.

In some alternative embodiments, referring to fig. 16 to 18, the at least two adaptors 2 may comprise a third adaptor 25, and the third adaptor 25 may comprise: a third liner 251, one end of the third liner 251 is provided with the abutting portion 22, the cross section of the abutting portion 22 is D-shaped, the other end of the third liner 251 is provided with the adapter mounting portion 21, the third liner 251 is further provided with a sixth seal groove 252, and a sixth seal ring 253 is accommodated in the sixth seal groove 252; a third shell 254 sleeved outside the third liner 251, wherein a threaded connection portion is arranged on one side of the third shell 254 close to the abutting portion 22; and a third pulling cap 255 threadedly coupled to the threaded connection portion, wherein the sixth sealing ring 253 is interposed between the third pulling cap 255 and the third liner 251, the third pulling cap 255 may be coupled to the connection cord 12, and the third pulling cap 255 may be detachably coupled to the third liner 251 by providing a third housing 254 having threads. Further, a third dust cap 256 may be connected to the third liner 251 at the adaptor mounting portion 21. Of course, in addition to the third adaptor 25, the connector body 1 may be connected to another type of adaptor 2, such as the first adaptor 23, the second adaptor 24, or the fourth adaptor 2, etc., having the same or different mating portion 22 as the third adaptor 25.

In some embodiments, referring to fig. 19-21, the at least two adaptors 2 may comprise a fourth adaptor 26, wherein the fourth adaptor 26 comprises: the adaptor mounting part 21 is arranged at one end of the fourth lining 261, the butt joint part 22 is arranged at the other end of the fourth lining 261, the cross section of the butt joint part 22 comprises at least two arc-shaped sections and at least two straight sections, the straight sections and the arc-shaped sections are arranged in a staggered mode, namely, the structural shape of the butt joint part 22 is that two parts are cut off on two opposite sides on the basis of a cylinder to form two planes, and an arc-shaped part is arranged between the two planes to form the straight sections and the arc-shaped sections which are arranged in a staggered mode, so that the butt joint part 22 of the second adaptor 24 is matched with the shape of the slot of the adaptor, and when the second adaptor 24 is mounted on the connector main body 1, the connector main body 1 can be matched and butted with the slot of the adaptor; and a fourth outer shell 262 sleeved outside the fourth inner liner 261, and a fourth sealing ring 263 disposed between the fourth outer shell 262 and the fourth inner liner 261, wherein a fourth sealing groove 264 is disposed on a surface of the fourth inner liner 261, and the fourth sealing ring 263 is accommodated in the fourth sealing groove 264. Of course, in addition to the fourth adapter 26, the connector body 1 may be connected to another type of adapter 2 having the same or different interface portion 22 as the fourth adapter 26, such as the first adapter 23, the third adapter 25, or the second adapter 24.

Further, as shown in fig. 20 and 22, the rear end of the fourth outer shell 262 is sleeved with a pulling rope 265, the abutting portion 22 of the fourth inner lining 261 is sleeved with the above-mentioned elastic member 2621 and the locking tongue 2622, the fourth inner lining 261 may be provided with a locking groove 223, in this embodiment, the locking groove 223 is provided on the abutting portion 22; the fourth adaptor 26 may further include: the fourth pulling cap 266 is provided with a locking arm 2661 matched with the locking groove 223, the fourth pulling cap 266 is locked with the locking groove 223 through the locking arm 2661, after the fourth lining 261 and the fourth pulling cap 266 are inserted and locked, the locking arm 2661 of the fourth pulling cap 266 is buckled in the locking groove 223, and meanwhile, under the elastic action of the elastic piece 2621, the elastic piece 2621 pushes the locking tongue 2622 to move towards the direction close to the fourth pulling cap 266 and is stopped at the outer side of the locking arm 2661, so that the locking arm 2661 is prevented from popping out of the locking groove 223, and the locking arm 2661 of the fourth pulling cap 266 cannot expand and deform, thereby ensuring firm tensile force and meeting the locking force required by most outdoor pre-connectors; when the locking tongue 2622 is moved in a direction close to the elastic member 2621, the elastic member 2621 is compressed, and the locking tongue 2622 is also moved in a direction away from the fourth pulling cap 266, the locking tongue 2622 is separated from the outer side of the locking arm, the locking arm 2661 can be ejected out of the locking groove 223, and the fourth lining 261 can be unlocked from the fourth pulling cap 266; the fourth pulling cap 266 is connected to the connecting rope 12, and a fifth sealing ring 267 is disposed between the fourth pulling cap 266 and the fourth housing 262; and a fourth dust cap 268 installed at one end of the fourth liner 261 far away from the fourth pulling cap 266, and the fourth dust cap 268 is matched with the adaptor mounting portion 21.

The four adapters 2, namely the first adapter 23, the second adapter 24, the third adapter 25 and the fourth adapter 26, can be combined and connected to the connector body 1 at will, and the four adapters 2, the circular cable connector body 1 and the butterfly cable connector body 1 are in modular design, so that the factory stock production is facilitated. Fig. 1 to 4 respectively show a schematic view of two adapters 2, three adapters 2, four adapters 2 and one adapter 2 connected to a connector body 1. According to the method and the device, the adapter interface can be matched with the adapter interface of the site through the quick-change adapter 2 according to the interface type of the site. When carrying out the field assembly, can take off the dust cap, insert adaptor 2 with connector body 1 to twist the switching installation department 21 and can accomplish being connected of adaptor 2 and connector body 1, wherein, can be provided with the traction hole on the dust cap.

In the present application, the structures provided on the first adapter 23, the second adapter 24, the third adapter 25 and the fourth adapter 26 for locking with the pulling cap can be adapted to the locking structures on the corresponding adapters.

In some optional embodiments, referring to fig. 20 and 23, the adaptor 2 further includes a housing 262 sleeved outside the locking tongue 2622, wherein the housing may be a fourth housing 262, the housing 262 may move along an axial direction of the adaptor 2, and a first protrusion 2623 may be disposed inside the housing 262; the abutting portion 22 is provided with a second protrusion 221 for limiting and matching with the first protrusion 2623, so that the sliding of the housing 262 can be limited within a certain range by the cooperation of the second protrusion 221 and the first protrusion 2623.

Further, referring to fig. 20, in order to realize the function of the locking tongue 2622 when locking the connector with the adapter, the locking tongue 2622 in this embodiment includes an annular body 26221 and an extension 26222. The annular body 26221 is used to cooperate with the first protrusion 2623 to make the locking tongue 2622 move with the housing 262 and compress the elastic member 2621. The extending portion 26222 is disposed on the annular body 26221 and extends toward one axial side of the annular body 26221, and the extending portion 26222 is used for being stopped at an outer side of the locking arm of the adaptor.

Preferably, as shown in fig. 22, an arc-shaped clearance surface 27 is formed on an inner side of a connection portion of the extending portion 26222 and the annular body 26221, and when the locking tongue 2622 is sleeved on the abutting portion 22, a clearance space 28 is formed between the clearance surface 27 and a surface of the abutting portion 22.

Meanwhile, in order to facilitate unlocking of the connector and the adapter, the first protrusion 2623 in this embodiment includes two extension arms, the two extension arms are disposed on the inner wall of the housing 262 and extend toward the axial direction of the housing 262, and the two extension arms are spaced apart from each other to form a channel for the extension 26222 to pass through.

When the housing 262 is pulled backward, the locking tongues 2622 are driven by the two extending walls of the first protrusion 2623 to move backward together and compress the elastic member 2621. When the external force is released, the elastic member 2621 is reset, which can drive the elastic member 2621 and the housing 262 to reset together. It can be understood that when an external force is applied to only the elastic member 2621, only the elastic member 2621 slides relatively, and the housing 262 does not move.

Preferably, a pull cord 265 is provided on the housing 262 to facilitate unlocking of the connector and adapter, and when the pull cord 265 is pulled, the housing 262 is moved to effect unlocking.

In some embodiments, referring to fig. 20, in order to facilitate installation and fixation of the elastic member 2621, the abutting portion 22 is further provided with a third protrusion 222, and one end of the elastic member 2621 abuts against the annular body 26221 and the other end abuts against the third protrusion 222.

In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

It is noted that, in the present invention, relational terms such as "first" and "second", and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above description is only exemplary of the invention, and is intended to enable those skilled in the art to understand and implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An optical fiber connector, comprising:

the connector comprises a connector main body (1), wherein an optical cable (17) is fixedly arranged in the connector main body (1), and a switching nut (11) is detachably connected to the connector main body (1);

at least two adaptors (2), each adaptor (2) having an adaptor mounting portion (21) for mounting to the adaptor nut (11), and each adaptor (2) having an abutment portion (22) for mating with an adaptor, the abutment portions (22) of at least two adaptors (2) differing in cross-sectional shape and;

at least one adapter (2) comprises an elastic piece (2621) and a locking tongue (2622) which are sleeved on the butt joint part (22), and the locking tongue (2622) can move along the axial direction of the adapter (2);

when the adaptor (2) is locked with the adapter, the elastic piece (2621) drives the bolt (2622) to be stopped at the outer side of the locking position of the adaptor (2) and the adapter;

when the bolt (2622) is moved towards the direction close to the elastic piece (2621), the elastic piece (2621) is compressed, and the adapter piece (2) is unlocked with the adapter.

2. The fiber optic connector of claim 1, wherein:

at least two adaptor (2) are including first adaptor (23), first adaptor (23) are including first inside lining (231), the one end of first inside lining (231) is equipped with switching installation department (21), the other end of first inside lining (231) is equipped with butt joint portion (22), the cross section of butt joint portion (22) is the C type.

3. The optical fiber connector of claim 2, wherein the first transition piece (23) further comprises:

the first outer shell (232) is sleeved outside the first inner liner (231), a first salient point is arranged on one side, close to the butt joint part (22), in the first outer shell (232), and a first sealing ring (233) is arranged between the first outer shell (232) and the first inner liner (231);

the first traction cap (235) is provided with a first groove matched with the first salient point, the first traction cap (235) is connected with the connector main body (1) through a connecting rope (12), and a second sealing ring (236) is arranged between the first traction cap (235) and the first shell (232);

a first dust cap (238) mounted to an end of the first liner (231) distal from the first pulling cap (235), the first dust cap (238) mating with the adaptor mounting portion (21).

4. The fiber optic connector of claim 1, wherein the at least two adapters (2) comprise a second adapter (24), the second adapter (24) comprising:

the butt joint part (22) is arranged at one end of the second lining (241), the cross section of the butt joint part (22) comprises an arc-shaped section and at least two straight sections, and the at least two straight sections are located on the same side of the arc-shaped section;

and the second shell (242) is sleeved outside the second lining (241), and one end, far away from the butt joint part (22), of the second shell (242) is provided with the switching installation part (21).

5. The fiber optic connector of claim 4, wherein a second boss (243) is provided on a side of the second outer shell (242) adjacent to the mating portion (22), and a third sealing ring (244) is provided between the second outer shell (242) and the second inner liner (241);

the second adaptor (24) further comprises:

a second pulling cap (246) provided with a second groove cooperating with the second protruding point (243), the second pulling cap (246) being connected with the connector body (1) by a connecting string (12);

and the second dustproof cap (247) is arranged at one end, far away from the second traction cap (246), of the second shell (242), and the second dustproof cap (247) is matched with the switching installation part (21).

6. The optical fiber connector according to claim 1, wherein the at least two adapters (2) comprise a third adapter (25), the third adapter (25) comprising:

the butt joint part (22) is arranged at one end of the third liner (251), the cross section of the butt joint part (22) is D-shaped, and the adapter mounting part (21) is arranged at the other end of the third liner (251);

a third shell (254) sleeved outside the third liner (251), wherein a threaded connection part is arranged on one side, close to the butt joint part (22), of the third shell (254);

and a third traction cap (255) which is in threaded connection with the threaded connection part, wherein the third traction cap (255) is connected with the connector body (1) through a connecting rope (12), and a sixth sealing ring (253) is arranged between the third traction cap (255) and the third inner liner (251).

7. The optical fiber connector according to claim 1, wherein the at least two adapters (2) comprise a fourth adapter (26), the fourth adapter (26) comprising:

the adapter mounting part (21) is arranged at one end of the fourth lining (261), the butt joint part (22) is arranged at the other end of the fourth lining (261), the cross section of the butt joint part (22) comprises at least two arc-shaped sections and at least two straight line sections, and the straight line sections and the arc-shaped sections are arranged in a staggered mode;

and a fourth outer shell (262) sleeved outside the fourth inner liner (261), wherein a fourth sealing ring (263) is arranged between the fourth outer shell (262) and the fourth inner liner (261).

8. The fiber optic connector of claim 7, wherein the fourth inner liner (261) is provided with a locking groove;

the fourth adaptor (26) further comprises:

a fourth pulling cap (266) provided with a locking arm matched with the locking groove, wherein the fourth pulling cap (266) is connected with the connector body (1) through a connecting rope (12), and a fifth sealing ring (267) is arranged between the fourth pulling cap (266) and the fourth shell (262);

a fourth dust cap (268) mounted to an end of the fourth liner (261) distal from the fourth pulling cap (266), and the fourth dust cap (268) mates with the transfer mount (21).

9. The fiber optic connector of claim 1, wherein:

the adapter (2) further comprises a shell (262) sleeved outside the bolt (2622), the shell (262) can move along the axial direction of the adapter (2), and a first protrusion (2623) is arranged in the shell (262);

and a second bulge (221) which is used for limiting and matched with the first bulge (2623) is arranged on the butt joint part (22).

10. The fiber optic connector of claim 9, wherein the latch tongue (2622) includes:

an annular body (26221) for cooperating with the first projection (2623) to move the locking tongue (2622) with the housing (262) and compress the elastic member (2621);

the extending portion (26222) is arranged on the annular body (26221) and extends towards one axial side of the annular body (26221), and the extending portion (26222) is used for stopping the outer side of the locking arm of the adapter.

11. The fiber optic connector of claim 10, wherein:

the first protrusion (2623) comprises two extension arms, the two extension arms are arranged on the inner wall of the housing (262) and extend towards the axial direction of the housing (262), and the two extension arms are arranged at intervals to form a channel for the extension (26222) to pass through.

12. The fiber optic connector of claim 10, wherein:

the butt joint part (22) is further provided with a third protrusion (222), one end of the elastic piece (2621) abuts against the annular body (26221), and the other end of the elastic piece abuts against the third protrusion (222).