1. The utility model provides a multicore fiber connector, includes adapter subassembly and connector subassembly, its characterized in that adapter subassembly including the adapter barrel, establish preceding, back chamber in the adapter barrel, the front chamber is provided with interior connecting cylinder, is provided with the jack catch between interior connecting cylinder and adapter barrel inner wall, the back chamber sets up the butt joint chamber to dispose the trip, butt joint chamber and interior connecting cylinder hole be linked together, the connector subassembly include the connector barrel, the anterior front chamber with the adapter barrel of connector barrel connects mutually, the well anterior cover of connector barrel is equipped with the elasticity overcoat, connector barrel periphery in the elasticity overcoat is provided with the draw-in groove with adapter jack catch looks joint, connector barrel hole install multicore lock pin subassembly, the butt joint chamber of multicore lock pin subassembly front end and adapter barrel links up mutually.

2. The multi-core fiber connector according to claim 1, wherein said adapter body comprises a front end and a rear end, a stopper shoulder with a larger outer diameter is provided between the front and rear ends, a raised boss is provided at the periphery of the front end corresponding to the claw, a connecting thread is provided at the periphery of the rear end, a guide groove is provided at the outer peripheral surface of the inner connecting cylinder, the radial section of the inner bore of the inner connecting cylinder is a major arc, the inner bore of the adapter body is a stepped inner bore with a large front end and a small rear end to form a front and rear cavity, the rear cavity is provided with a butt-joint cavity with a rectangular cross section, and the hooks are disposed at both sides of the butt-joint cavity.

3. The multi-fiber connector of claim 1 or 2, wherein the multi-fiber connector assembly is a 2-24-fiber connector assembly.

4. The multi-core optical fiber connector according to claim 1 or 2, wherein the multi-core ferrule assembly comprises an inner sleeve, a sealing ring is arranged in a sealing groove arranged at the front part of the inner sleeve and is configured with the inner hole of the connector barrel, the front end of the inner sleeve is connected with a ferrule sheath, a multi-core ferrule and a ferrule spring are arranged in the ferrule sheath, a buffer spring is sleeved at the middle part of the inner sleeve, and a positioning clamping groove is arranged at the rear end of the inner sleeve and is provided with an elastic clamping ring.

5. The multi-core optical fiber connector according to claim 4, wherein the ferrule sheath has a circular arc-shaped outer periphery and is disposed in the inner bore of the adapter cylinder, the inner bore of the ferrule sheath is a ferrule cavity, a locking hole is laterally disposed in the middle of the ferrule cavity, the rear end of the ferrule cavity is connected to the front end surface of the inner sleeve, a forwardly extending buckle is disposed on the front end surface of the inner sleeve, and the buckle penetrates the ferrule cavity and is locked to the locking hole of the ferrule sheath.

6. The multi-core fiber optic connector of claim 5 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.

7. The multi-core fiber connector of claim 2, wherein the connector barrel is provided with a sealing groove, a locking groove, a stop block and a spring seat at intervals from front to back, the locking groove is provided with a sealing ring, the front end of the inner hole of the connector barrel is provided with a projection, and the projection is provided with a guide groove on the outer circumferential surface of the inner connecting barrel.

8. The multi-core fiber optic connector of claim 7 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.

9. The multi-core optical fiber connector according to claim 8, wherein the clamping jaws comprise 2 to 5 axial clamping jaws distributed at intervals along the circumferential direction, the front ends of the axial clamping jaws are provided with inward protruding buckles, the rear ends of the axial clamping jaws are fixedly connected with the adapter cylinder, 2 to 5 clamping grooves are correspondingly arranged along the periphery of the connector cylinder, the front ends of the clamping grooves are provided with small bosses, 2 to 5 arched bosses are arranged on the periphery of the front end head of the adapter cylinder corresponding to the clamping jaws, 2 to 5 arched inner bosses are correspondingly arranged on the periphery of the front end of the outer sleeve, and the inner bosses are positioned in inner cavities of the bosses when being plugged.

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 technical problem to be solved by the invention is to provide a multi-core optical fiber connector aiming at the defects of the prior art, which can realize the parallel butt joint of a plurality of optical fibers, and has the advantages of reasonable and compact structure arrangement, simple and convenient plugging and unplugging use and reliable connection.

The technical scheme adopted by the invention for solving the problems is as follows: 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, the periphery of a connector cylinder body in the elastic outer sleeve is provided with a clamping groove clamped with the clamping jaw of the adapter, a multi-core ferrule assembly is arranged in an inner hole of the connector cylinder body, and the front end of the multi-core ferrule assembly is connected with a butt joint cavity of the adapter cylinder body.

According to the above scheme, the adapter barrel include preceding end and back end, be provided with the great backstop shaft shoulder of external diameter between preceding, the back end, the end periphery is provided with the boss of bow-type corresponding to the jack catch in the front, back end periphery is provided with connecting thread, the internal connection section of thick bamboo peripheral face on be provided with the guide way, the internal connection section of thick bamboo hole radial cross-section is the major arc shape, the hole of adapter barrel is the step hole, and preceding big back is little, constitutes preceding back chamber, and the back chamber sets up the butt joint chamber of rectangle or oval cross-section, disposes the trip in the both sides of butt joint chamber.

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

According to the scheme, the multi-core ferrule assembly comprises an inner sleeve, a sealing ring is arranged on a sealing groove arranged at the front part of the inner sleeve and is configured with an inner hole of a connector cylinder, the front end of the inner sleeve is connected with a ferrule sheath, a multi-core ferrule and a ferrule spring are arranged in the ferrule sheath, a buffer spring is sleeved at the middle part of the inner sleeve, and a positioning clamping groove is arranged at the rear end of the inner sleeve and provided with an elastic clamping ring.

According to the scheme, the periphery of the ferrule sheath is in a U-arc shape and is configured with an inner connecting cylinder inner hole of the adapter cylinder body, the inner hole of the ferrule sheath is a ferrule cavity, a clamping hole is formed in the middle of the ferrule cavity in the lateral direction, the rear end of the ferrule cavity is connected with the front end face of the inner sleeve, a buckle extending forwards is arranged on the front end face of the inner sleeve, 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 jack catch including along 2~5 axial jack catches of circumference interval distribution, the front end of axial jack catch is provided with inside prominent buckle, the rear end and the adapter barrel of axial jack catch link firmly mutually, the draw-in groove along the correspondence of connector barrel periphery set up 2~5, be provided with little boss at the front end of draw-in groove.

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 using process of the invention is as follows: 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 invention has the beneficial effects 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 in accordance with one embodiment of the present invention.

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

FIG. 3 is a top perspective block diagram of an adapter in one embodiment of the 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 an adapter in accordance with 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 a connector barrel in one embodiment of the invention.

Figure 9 is an elevation view of a coupling head assembly in accordance with one embodiment of the present invention.

Figure 10 is a perspective view of a coupling head assembly in one embodiment of the present invention.

Figure 11 is a perspective view of a multi-core ferrule assembly in one embodiment of the present invention.

Figure 12 is a perspective view of a ferrule boot in one embodiment of the present invention.

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

Detailed Description

The invention is further described below 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 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.