CN214895913U

CN214895913U - Multi-core optical fiber connector

Info

Publication number: CN214895913U
Application number: CN202121468857.8U
Authority: CN
Inventors: 龚鹏林; 熊爽; 朱秀勇; 周伟; 尹娟
Original assignee: Yangtze Optical Fibre and Cable Co Ltd
Current assignee: Yangtze Optical Fibre and Cable Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-11-26
Anticipated expiration: 2031-06-30

Abstract

The utility model relates to a multi-core optical fiber connector, which comprises an adapter and a connecting head component, wherein the adapter component comprises an adapter cylinder body, an inner connecting cylinder is arranged in the front cavity of the adapter cylinder body, a clamping jaw is arranged between the inner connecting cylinder and the inner wall of the adapter cylinder body, a butt joint cavity is arranged in the rear cavity, a clamping hook is arranged, the connector assembly comprises a connector cylinder body, the front part of the connector cylinder body is matched and connected with the front cavity of the adapter cylinder body, a sealing ring which is matched with a hole in the front cavity of the adapter is arranged on the periphery of the front end of the connector cylinder body, an elastic outer sleeve is sleeved on the middle front part of the connector cylinder body, the periphery of the connector cylinder body in the elastic outer sleeve is provided with a clamping groove clamped with the clamping jaw of the adapter, the inner hole of the connector cylinder body is provided with a multi-core ferrule assembly, the multi-core ferrule assembly comprises an inner sleeve connected with the optical cable, the front end of the inner sleeve is connected with a ferrule sheath, and a multi-core ferrule and a ferrule spring are arranged in the ferrule sheath. The utility model discloses can realize the parallel butt joint of many optic fibre, not only the structure sets up reasonable compactness, and the plug is used portably moreover, connects reliably.

Description

Multi-core optical fiber connector

Technical Field

The utility model relates to a multicore fiber connector for the parallel butt joint of many optic fibre belongs to optical fiber communication device technical field.

Background

With the rapid development of the internet and the optical network, the application of the optical fiber connector is more and more extensive. The existing optical fiber connectors are mostly single-core optical fiber connectors, only one optical fiber can be butted, the connection efficiency is low, the manufacturing cost is high, the occupied space in a box body is large, and the technical development requirements of simultaneous connection of a plurality of optical fibers are difficult to adapt. In order to solve the above problems, some multi-fiber optical connectors have been proposed in the prior art, which can be used for butt joint of multiple optical fibers, but the structure is not reasonable and compact, and the use of splicing is not convenient enough. On the other hand, most of the existing optical fiber connectors are used indoors, the waterproof performance is weak, and the connectors are transmitted through cables during plugging and unplugging and do not directly act on plugs of the connectors, so that the optical fiber cables are easily deformed and damaged. Also have the fiber connector who adopts threaded connection structure, need twist many rings when installation and dismantlement, it is very inconvenient to use.

Disclosure of Invention

The utility model aims to solve the technical problem that not enough to above-mentioned prior art exists provides a multicore fiber connector, and it can realize the parallel butt joint of many optic fibre, and not only the structure sets up reasonable compactness, and the plug is used portably moreover, connects reliably.

The utility model discloses a solve the technical scheme that the problem that the aforesaid provided adopted and be: comprises an adapter component and a connecting head component, and is characterized in that the adapter component comprises an adapter cylinder body, a front cavity and a rear cavity are arranged in the adapter cylinder body, an inner connecting cylinder is arranged in the front cavity, a clamping jaw is arranged between the inner connecting cylinder and the inner wall of the adapter cylinder body, a butt joint cavity is arranged in the rear cavity, and a clamping hook is arranged, the butt joint cavity is communicated with an inner bore of the inner connecting cylinder, the connector assembly comprises a connector cylinder, the front part of the connector cylinder is matched and connected with a front cavity of the adapter cylinder, a sealing ring matched with the inner bore of the adapter front cavity is arranged on the periphery of the front end of the connector cylinder, an elastic outer sleeve is sleeved on the middle front part of the connector cylinder, a clamping groove clamped with the clamping jaw of the adapter is formed in the periphery of the connector cylinder in the elastic outer sleeve, a multi-core ferrule assembly is arranged in an inner hole of the connector cylinder, and the front end of the multi-core ferrule assembly is connected with a butt joint cavity of the adapter cylinder; the multi-core ferrule assembly comprises an inner sleeve connected with the optical cable, the front end of the inner sleeve is connected with a ferrule sheath, and a multi-core ferrule and a ferrule spring are arranged in the ferrule sheath.

According to the above scheme, the adapter barrel include preceding end and back end, be provided with the boss of bow-type in the front end periphery corresponding to the jack catch, back end periphery is provided with connecting thread, the internal connection section of thick bamboo periphery on be provided with the guide way, the hole back chamber of adapter barrel sets up rectangular cross section's butt joint chamber, disposes the trip in the both sides of butt joint chamber.

According to the scheme, the multi-core ferrule assembly is a 2-24-core plug-in assembly.

According to the scheme, the sealing ring is arranged on the sealing groove arranged at the front part of the periphery of the inner sleeve, the sealing ring is configured with the inner hole of the connector barrel, the middle of the inner sleeve is sleeved with the buffer spring, the rear end of the inner sleeve is provided with the positioning clamping groove which is provided with the elastic snap ring to connect the outer sheath, the rear end of the inner sleeve inner hole is provided with the metal clamping sleeve, and the optical cable penetrates into the inner sleeve through the metal clamping sleeve at the rear end of the inner sleeve

According to the scheme, the periphery of the ferrule sheath is configured with the inner connecting cylinder inner hole of the adapter cylinder, the inner hole of the ferrule sheath is a ferrule cavity, the middle side of the ferrule cavity is provided with a clamping hole, the rear end of the ferrule cavity is connected with the front end face of the inner sleeve, the front end face of the inner sleeve is provided with a buckle extending forwards, and the buckle penetrates through the ferrule cavity and is fastened with the clamping hole of the ferrule sheath.

According to the scheme, the front end face of the ferrule sheath is provided with the ferrule protection boss corresponding to the upper side and the lower side of the ferrule cavity.

According to the scheme, the periphery of the connector barrel is provided with the sealing groove, the clamping groove, the stop block and the spring seat which are arranged with the clamping jaw at intervals from front to back, the sealing ring is arranged in the sealing groove, the front end of the inner hole of the connector barrel is provided with the convex block, and the convex block is arranged with the guide groove arranged on the outer peripheral surface of the inner connecting barrel.

According to the scheme, the elastic outer sleeve comprises an outer sleeve sleeved on the periphery of the front portion of the connector barrel, a stop hole shoulder is arranged on the front portion of an inner hole of the outer sleeve and is configured with a stop block on the periphery of the connector barrel, a front stop function is achieved, a spring cavity is arranged at the rear end of the inner hole of the outer sleeve and is configured with a spring seat of the connector barrel, a reset spring is installed, and the rear end of the reset spring and the spring seat are configured.

According to the scheme, the clamping jaws comprise 2-5 axial clamping jaws distributed along the circumferential direction at intervals, the clamping grooves are correspondingly arranged by 2-5 along the periphery of the connector barrel, and small bosses are arranged at the front ends of the clamping grooves.

According to the scheme, the periphery of the front end head of the adapter cylinder body is provided with 2-5 arched bosses corresponding to the clamping jaws, the periphery of the front end of the outer sleeve is correspondingly provided with 2-5 arched inner bosses, and the inner bosses are located in inner cavities of the bosses when being plugged.

According to the scheme, the rear end of the connecting head assembly penetrates into the optical cable and is provided with the outer sheath.

The utility model discloses the use does: insert the connector subassembly with the adapter subassembly when, connector barrel periphery can be touch to the jack catch on the adapter, can make the jack catch outwards open, the front end of opening the jack catch can push up elasticity overcoat terminal surface, make elasticity overcoat rethread, little boss entering draw-in groove is crossed to the buckle of jack catch front end, the jack catch adduction, the external diameter reduces, elasticity overcoat terminal surface is no longer withstood this moment, under the effect of spring force, elasticity overcoat antedisplacement is until the backstop, with the jack catch cladding in the elasticity overcoat, make jack catch and draw-in groove lock die, realize the quick grafting and the auto-lock of two subassemblies, realize the firm connection of connector and adapter. When the adapter assembly needs to be pulled out of the connecting head assembly, the elastic outer sleeve of the connecting head assembly is pushed backwards to expose the buckle at the front end of the clamping jaw, and the clamping groove can be disengaged from the clamping jaw of the adapter assembly at the moment, so that the adapter assembly is pulled out smoothly. The whole operation process can be summarized as follows: the plug-in realizes waterproof sealing and self-locking; when the optical cable is pulled, the optical cable can bear the pulling force meeting the design requirement without loosening; the connector can be released from the adapter by moving the housing (moving the housing in a direction away from the adapter). The operation process is very simple and convenient.

The beneficial effects of the utility model reside in that: 1. the parallel butt joint of a plurality of optical fibers can be realized, and the optical fiber connection efficiency is improved; 2. the structure is reasonable and compact, the outer diameter is small, and the water resistance is good; particularly, the multi-core plug-in component is simple and compact in structure, and the movable clamping type ferrule sheath structure with the excellent arc-shaped cross section is arranged, so that the multi-core plug-in component is convenient to manufacture and install, accurate in positioning and high in connection reliability; 3. the plug is convenient to use, has strong self-locking function and reliable connection performance, can realize the firm connection of the connector and the adapter, is convenient to construct and drag, can bear larger pulling force, and can be suitable for the use in various indoor and outdoor environments.

Drawings

Fig. 1 is a perspective view of an adapter according to an embodiment of the present invention.

Fig. 2 is a top view of an adapter in an embodiment of the invention.

Fig. 3 is a top perspective view of an adapter according to an embodiment of the present invention.

Fig. 4 is a cross-sectional view C-C in fig. 2.

Fig. 5 is a sectional view a-a in fig. 2.

Fig. 6 is a bottom perspective view of the adapter according to an embodiment of the present invention.

Fig. 7 is a perspective exploded view of a connector assembly according to an embodiment of the present invention.

Fig. 8 is a perspective view of the connector cylinder according to an embodiment of the present invention.

Fig. 9 is an elevation view of a connector assembly according to an embodiment of the present invention.

Fig. 10 is a perspective view of a connector assembly in accordance with an embodiment of the present invention.

Fig. 11 is a perspective view of a multi-core ferrule assembly according to an embodiment of the present invention.

Fig. 12 is a perspective view of a ferrule boot according to an embodiment of the present invention.

Fig. 13 is a front cross-sectional view of an embodiment of the present invention.

Fig. 14 is a partially enlarged view of C in fig. 13.

Fig. 15 is a side cross-sectional view of an embodiment of the invention.

Detailed Description

The invention is further described with reference to the following figures and examples.

The adapter comprises an adapter assembly and a connecting head assembly, wherein the adapter assembly comprises an adapter cylinder body 1, the adapter cylinder body comprises a front end head 1.9 (N part) and a rear end head 1.7 (M part), a stop shaft shoulder 1.8 with a larger outer diameter is arranged between the front end head and the rear end head, a front cavity and a rear cavity are arranged in the adapter cylinder body, an inner connecting cylinder 1.2 is arranged in the front cavity, clamping jaws 1.5 are arranged between the inner connecting cylinder and the inner wall of the adapter cylinder body, each clamping jaw comprises 3 axial clamping jaws distributed at intervals along the circumferential direction, the front ends of the axial clamping jaws are provided with inwards-protruding clamping buckles 1.5.1, and the rear ends of the axial clamping jaws are fixedly connected with the adapter cylinder body; the periphery of the front end head is provided with an arched lug boss 1.9.1 corresponding to the claw; the periphery of the rear end is provided with connecting threads, the outer peripheral surface of the inner connecting cylinder is provided with a guide groove 1.2.1, the radial section of an inner connecting cylinder inner hole 1.11 is in a U-shaped shape, the U-shaped surface is connected with a plane 1.4, the affiliated plane is corresponding to the guide groove 1.2.1 on the outer peripheral surface, the inner hole of the adapter cylinder is a step-shaped inner hole, the front part is large and the rear part is small, a front cavity and a rear cavity are formed, the rear cavity is provided with a butt joint cavity 1.10 with a waist-shaped section, one surface of the butt joint cavity is provided with a guide groove 1.6, two sides of the butt joint cavity are provided with clamping hooks 1.1, and the butt joint cavity is communicated with the inner control of the inner connecting cylinder. The guide groove 1.6 is used for guiding and positioning with a KEY KEY connected with a standard MPO, and the clamping hook 1.1 is used for realizing clamping and locking of the standard MPO connector.

The connector assembly comprises a connector barrel 11, the periphery of the connector barrel is respectively provided with a sealing groove 11.5, a clamping groove 11.1, a stop block 11.3 and a spring seat 11.2 which are configured with a clamping jaw at intervals from front to back, a stop shaft shoulder is further arranged behind the spring seat, a sealing ring 10 is arranged in the sealing groove, 3 clamping grooves are correspondingly arranged along the periphery of the connector barrel, the front end of each clamping groove is provided with a small boss 11.6, and the clamping grooves are configured with the clamping jaws; the front end of the inner hole of the connector cylinder body is provided with a positioning lug 11.4, and the positioning lug is matched with a guide groove 1.2.1 arranged on the outer circumferential surface of the inner connecting cylinder body and used for the plug-in positioning of the adapter assembly and the connector assembly. The middle-front part of the connector barrel is sleeved with an elastic outer sleeve, the periphery of the connector barrel in the elastic outer sleeve is provided with a clamping groove configured with an adapter clamping jaw, the elastic outer sleeve comprises an outer sleeve 8 sleeved on the periphery of the front part of the connector barrel, a stopping boss is arranged on the front part of an inner hole of the outer sleeve, the elastic outer sleeve is configured with a stopping block 11.3 on the periphery of the connector barrel, a front stopping effect is achieved, a spring cavity is arranged at the rear end of the inner hole of the outer sleeve and is configured with a spring seat 11.2 of the connector barrel, a reset spring 9 is installed, the rear end of the reset spring is configured with the spring seat, and the reset spring is arranged in 2-3 positions along the circumferential direction. The periphery of the front end of the outer sleeve 8 is correspondingly provided with 3 arched inner bosses, and the inner bosses 8.1 are positioned in the inner cavities of the bosses of the adapter cylinder body during plugging.

The multi-core plug-in component is arranged in an inner hole of the connector cylinder and is a 12-core plug-in component which comprises 12 optical fibers arranged in parallel, the plug-in component comprises an inner sleeve 6, a sealing groove is arranged at the front part of the inner sleeve and provided with a sealing ring 5 which is configured with the inner hole of the connector cylinder, the front end of the inner sleeve is connected with a plug-in sheath 4, a multi-core plug 2 and a plug-in spring 3 are arranged in the plug-in sheath, the periphery of the plug-in sheath is in a major arc shape and is composed of a major arc surface and a plane 4.2 which are configured with the inner hole of the adapter cylinder, the inner hole of the plug-in sheath is a rectangular plug-in cavity 4.5, clamping holes 4.3 are arranged at two sides of the middle part of the plug-in sheath, the rear end of the inner sleeve is connected with the front end face of the inner sleeve, a buckle 6.1 which extends forwards is arranged on the front end face of the inner sleeve and penetrates through the plug-in cavity to be fastened with the clamping holes of the plug-in sheath, so that the sheath is fixed at the front end of the inner sleeve, the front end face of the ferrule sheath corresponds to the rectangular ferrule cavity 4.5, and the upper side and the lower side of the ferrule cavity are provided with a ferrule protection boss 4.1, the ferrule protection boss is higher than the front end face or the multi-core ferrule end face D = 2-3 mm, and the ferrule sheath can play a role in protecting the ferrule end face. The middle of the inner sleeve is sleeved with a buffer spring 7, the rear end of the inner sleeve is provided with a positioning clamping groove, an elastic snap ring 12 is installed, the rear end of the connecting head assembly penetrates into an optical cable 14, the rear end of an inner hole of the inner sleeve is provided with a metal clamping sleeve, the optical cable penetrates into the inner sleeve through the metal clamping sleeve at the rear end of the inner sleeve, the metal clamping sleeve plays a role in fixing the optical cable, an outer sheath 13 is arranged at the outer rear end of the inner sheath, and the front end of the outer sheath is connected with the elastic snap ring in a matching mode. The front end of the multi-core ferrule assembly is connected with the butt joint cavity of the adapter cylinder body.

Claims

1. A multi-core optical fiber connector comprises an adapter component and a connecting head component, and is characterized in that the adapter component comprises an adapter cylinder body, a front cavity and a rear cavity are arranged in the adapter cylinder body, an internal connecting cylinder is arranged in the front cavity, a clamping jaw is arranged between the inner connecting cylinder and the inner wall of the adapter cylinder body, a butt joint cavity is arranged in the rear cavity, and a clamping hook is arranged, the butt joint cavity is communicated with an inner bore of the inner connecting cylinder, the connector assembly comprises a connector cylinder, the front part of the connector cylinder is matched and connected with a front cavity of the adapter cylinder, a sealing ring matched with the inner bore of the adapter front cavity is arranged on the periphery of the front end of the connector cylinder, an elastic outer sleeve is sleeved on the middle front part of the connector cylinder, a clamping groove clamped with the clamping jaw of the adapter is formed in the periphery of the connector cylinder in the elastic outer sleeve, a multi-core ferrule assembly is arranged in an inner hole of the connector cylinder, and the front end of the multi-core ferrule assembly is connected with a butt joint cavity of the adapter cylinder; the multi-core ferrule assembly comprises an inner sleeve connected with the optical cable, the front end of the inner sleeve is connected with a ferrule sheath, and a multi-core ferrule and a ferrule spring are arranged in the ferrule sheath.

2. The multi-core fiber optic connector of claim 1, wherein the adapter body includes a front end and a rear end, wherein an arcuate projection is provided on the outer periphery of the front end corresponding to the latch, a connecting thread is provided on the outer periphery of the rear end, a guide groove is provided on the outer periphery of the inner connector, a mating cavity having a rectangular cross section is provided in the rear cavity of the inner bore of the adapter body, and latches are provided on both sides of the mating cavity.

3. The multi-core optical fiber connector according to claim 1 or 2, wherein the periphery of the ferrule sheath is disposed with the inner bore of the inner sleeve of the adapter body, the inner bore of the ferrule sheath is a ferrule cavity, the middle part of the ferrule cavity is laterally provided with a snap hole, the rear end of the ferrule cavity is connected with the front end face of the inner sleeve, the front end face of the inner sleeve is provided with a forwardly extending buckle, and the buckle penetrates the ferrule cavity to be fastened with the snap hole of the ferrule sheath.

4. The multi-core fiber optic connector of claim 3 wherein core protection bosses are provided on the front face of the ferrule boot corresponding to the upper and lower sides of the rectangular ferrule cavity; the front part of the periphery of the inner sleeve is provided with a sealing groove which is provided with a sealing ring and is configured with the inner hole of the connector barrel, the middle part of the inner sleeve is sleeved with a buffer spring, the rear end of the inner sleeve is provided with a positioning clamping groove which is provided with an elastic snap ring to connect with an outer sheath, the rear end of the inner sleeve inner hole is provided with a metal clamping sleeve, and an optical cable penetrates into the inner sleeve through the metal clamping sleeve at the rear end of the inner sleeve.

5. The multi-core optical fiber connector according to claim 1 or 2, wherein the outer periphery of the connector barrel is provided with a sealing groove, a clamping groove configured with the clamping jaw, a stop block and a spring seat at intervals from front to back, a sealing ring is arranged in the sealing groove, a projection is arranged at the front end of the inner hole of the connector barrel, and the projection is configured with a guide groove arranged on the outer peripheral surface of the inner connecting barrel.

6. The multi-core fiber optic connector of claim 5 wherein said resilient outer sleeve comprises an outer sleeve disposed about the outer periphery of the front portion of the connector barrel, a stop shoulder disposed about the front portion of the inner bore of the outer sleeve for engaging a stop block disposed about the outer periphery of the connector barrel for providing a forward stop, a spring cavity disposed about the spring seat of the connector barrel at the rear end of the inner bore of the outer sleeve, and a return spring disposed about the spring seat at the rear end of the return spring.

7. The multi-core optical fiber connector according to claim 5, wherein the clamping jaws comprise 2-5 axial clamping jaws distributed at intervals along the circumferential direction, 2-5 clamping grooves are correspondingly arranged along the periphery of the connector barrel, and a small boss is arranged at the front end of each clamping groove.

8. The multi-core fiber optic connector of claim 1 or 2, wherein the multi-core ferrule assembly is a 2-24-core plug assembly.