CN215181014U

CN215181014U - Multicore high-density low-loss connector core insert and connector

Info

Publication number: CN215181014U
Application number: CN202120774886.0U
Authority: CN
Inventors: 张关明; 杜文刚; 刘晓明
Original assignee: Suzhou Agix Optical Technology Co ltd
Current assignee: Suzhou Agix Optical Technology Co ltd
Priority date: 2021-04-15
Filing date: 2021-04-15
Publication date: 2021-12-14
Anticipated expiration: 2031-04-15

Abstract

The utility model discloses a multicore high density low-loss connector lock pin, the lock pin includes lock pin head and lock pin afterbody, lock pin head and the fixed setting of lock pin afterbody, the lock pin head is equipped with well cavity, the up end of lock pin head is equipped with the hole of gluing with well cavity communicating, lock pin head and lock pin afterbody are equipped with the coaxial line and the locating hole that is linked together, lock pin head and lock pin afterbody be provided with respectively with well cavity communicating optical fiber hole and optic fibre fixed slot, the lower limb level of optical fiber hole inwards extends into the direction step, the optical fiber hole is used for acceping a plurality of bare fibers that the display was arranged, the optical fiber hole with insert the accurate cooperation of inside bare fiber. In this way, the utility model discloses can reduce fiber connector's loss, improve fiber connector's life, under the prerequisite that does not change the size of present lock pin, can improve the quantity that can insert optic fibre.

Description

Multicore high-density low-loss connector core insert and connector

Technical Field

The utility model relates to a multicore fiber connector field especially relates to a multicore high density low-loss connector lock pin and connector.

Background

In an optical communication network, space division multiplexing optical fibers are widely concerned because the space division multiplexing optical fibers can bring about order of magnitude improvement to the transmission capacity of a single optical fiber, break through the traditional shannon limit and realize transmission with higher bandwidth. The Multi-Core Fiber (MFC) is one type of space division multiplexing Fiber, and is an optical Fiber having a plurality of cores in a common cladding region, and each Core serves as an independent communication channel, so that the transmission capacity is expanded from the spatial dimension, and the transmission requirement of future communication upgrade can be met. Particularly in the field of data centers, the multi-core fiber data center communication is a very potential scheme, and has the advantages that under the same space condition, the multi-core fiber can multiply improve the transmission capacity and simplify the comprehensive wiring. For applications of multi-core fibers in data centers, an important challenge is to achieve low-loss optical connections between multi-core fiber jumpers.

In a fiber optic pigtail, the two end faces of the fiber need to be precisely butted, and most importantly, the axes of the two fibers are aligned so that the light energy output from the transmitting fiber can be coupled into the receiving fiber to the maximum extent. As each core of the multi-core optical fiber is placed at a specific position of a common cladding according to a certain rule, the multi-core optical fiber connector not only needs to align the axes, but also needs to rotate the position of the optical fiber, so that each core of the optical fiber needing to be butted can correspond to each other in sequence, and each core of one multi-core optical fiber is connected with low loss.

At present, when connecting a multi-core optical fiber connector, a plurality of optical fibers in an optical cable are generally stripped, then a ceramic pin or a metal pin or a terminal fitting is respectively prepared on each optical fiber, and then the plurality of pins or terminal fittings are respectively installed in a base body of the optical fiber connector, the connector has the following problems during plugging: firstly, a plurality of holes are needed to be processed on a base body for placing contact pins, when the number of cores is larger, the processing difficulty is larger, and the precision of the holes is difficult to ensure; secondly, the outer diameter of the connector is larger due to the adoption of a plurality of separated contact pins; thirdly, when the connector is assembled, a plurality of contact pins are required to be installed in the base body of the connector, the process is difficult to realize, the prepared optical fibers are easy to break, if one optical fiber breaks, the connector cannot be assembled, and the contact pins on all the optical fibers need to be prepared again to ensure that the contact pins are consistent in length and then assembled.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the main technical problem who solves provides a multicore high density low-loss connector lock pin and connector, can improve.

In order to solve the technical problem, the utility model discloses a technical scheme be: the utility model provides a multicore high density low-loss connector lock pin, the lock pin includes lock pin head and lock pin afterbody, lock pin head and the fixed setting of lock pin afterbody, the lock pin head is equipped with well cavity, the up end of lock pin head is equipped with the hole of gluing communicating with well cavity, lock pin head and lock pin afterbody are equipped with the coaxial line and the locating hole that is linked together, lock pin head and lock pin afterbody are provided with respectively with the communicating optical fiber hole of well cavity and optic fibre fixed slot, the lower limb level of optical fiber hole inwards extends into the direction step, the optical fiber hole is used for accommodating a plurality of bare fibers of display arrangement, the optical fiber hole with insert inside bare fiber accurate cooperation.

Furthermore, the head of the ferrule is provided with a plurality of optical fiber holes which are arranged in parallel and are uniformly distributed.

Further, the lower edges of the optical fiber holes of the ferrule head extend horizontally inwards to form guide steps, and the length of each guide step is gradually increased from top to bottom.

Further, the outer end face of the guide step is provided with a chamfer.

Further, the positioning hole is provided with a chamfer.

The utility model provides a multicore high density low-loss connector, includes dust cap, lock pin, guide pin base, spring, ends shelves, casing, crimping ring, tail cover and optical cable, lock pin, guide pin base, spring, end shelves are established in the casing, casing front end cover is equipped with the dust cap, the tail cover is connected through the crimping ring to the casing rear end, the connection of afterbody of lock pin end the shelves, end be equipped with on the inner wall of shelves with spring shape assorted recess makes the spring card is established end in the shelves, the lock pin be above-mentioned arbitrary the lock pin.

The utility model has the advantages that: the utility model discloses a multicore high density low-loss connector lock pin and connector can ensure the precision of lock pin, reduces fiber connector's loss, improves fiber connector's life. The utility model discloses under the prerequisite that does not change the size of present lock pin, can improve the quantity that can insert optic fibre.

Drawings

Fig. 1 is a schematic structural diagram of a first embodiment of a ferrule of a multi-core high-density low-loss connector according to the present invention;

fig. 2 is a schematic diagram of step 1) of a method for manufacturing a multi-core high-density low-loss connector ferrule according to the present invention;

fig. 3 is a schematic diagram of step 2) of a method for manufacturing a multi-core high-density low-loss connector ferrule according to the present invention;

fig. 4 is a schematic diagram of step 3) of a method for manufacturing a multi-core high-density low-loss connector ferrule according to the present invention;

fig. 5 is a schematic diagram of step 4) of a method for manufacturing a multi-core high-density low-loss connector ferrule according to the present invention;

fig. 6 is a schematic diagram of step 5) of a method for manufacturing a multi-core high-density low-loss connector ferrule according to the present invention;

fig. 7 is a schematic structural diagram of a second embodiment of the ferrule of the multi-core high-density low-loss connector according to the present invention;

fig. 8 is a schematic structural diagram of a third embodiment of the ferrule of the multi-core high-density low-loss connector according to the present invention;

fig. 9 is a schematic structural diagram of a fourth embodiment of the ferrule of the multi-core high-density low-loss connector according to the present invention;

fig. 10 is a front view of a fourth embodiment of a ferrule for a multi-core high-density low-loss connector according to the present invention;

fig. 11 is a cross-sectional view of a fourth embodiment of a ferrule for a multi-core high-density low-loss connector according to the present invention;

fig. 12 is a schematic diagram of a multi-core high-density low-loss connector according to the present invention.

1. A ferrule head; 2. the tail part of the inserting core; 3. dispensing holes; 4. positioning holes; 5. an optical fiber hole; 6. an optical fiber fixing groove; 7. a guide step; 8. a dust cap; 9. a guide pin base; 10. a spring; 11. stopping; 12. a front cover; 13. a housing; 14. a crimp ring; 15. a tail sleeve; 16. an optical cable; 17. the belt combining clamp comprises a first fixing block; 18. and the second fixing block is clamped.

Detailed Description

The following detailed description of the preferred embodiments of the present invention will be provided to enable those skilled in the art to more easily understand the advantages and features of the present invention, and to make clear and definite definitions of the protection scope of the present invention.

Referring to fig. 1, 7-11, an embodiment of the present invention includes: the utility model provides a multicore high density low-loss connector lock pin, the lock pin includes lock pin head 1 and lock pin afterbody 2, lock pin head 1 and the fixed setting of lock pin afterbody 2, lock pin head 1 is equipped with well cavity, the up end of lock pin head 1 is equipped with and goes out the communicating point of glue hole 3 with well cavity, lock pin head 1 and lock pin afterbody 2 are equipped with coaxial line and the locating hole 4 that is linked together, lock pin head 1 and lock pin afterbody 2 are provided with respectively with well cavity communicating optical fiber hole 5 and optical fiber fixed slot 6, the lower limb level of optical fiber hole 5 inwards extends into direction step 7, optical fiber hole 5 is used for acceping a plurality of bare fibers that the display was arranged, optical fiber hole 5 and the accurate cooperation of the bare fiber that inserts inside. The optical fiber holes 5 are waist-shaped holes.

Further, the ferrule head 1 is provided with a plurality of optical fiber holes 5 which are arranged in parallel and distributed uniformly.

Further, the lower edges of the optical fiber holes 5 of the ferrule head 1 extend horizontally inwards to form guide steps 7, and the lengths of the guide steps 7 are gradually increased from top to bottom.

Further, the outer end face of the guide step 7 is provided with a chamfer.

Further, the positioning hole 4 is provided with a chamfer.

Referring to fig. 12, a multi-core high-density low-loss connector includes a dust cap 8, a ferrule, a guide pin base 9, a spring 10, a stop 11, a front sleeve 12, a housing 13, a crimp ring 14, a tail sleeve 15, and a 3mm optical cable 16, where the front sleeve 12 is disposed inside the housing 13 to form a housing, the ferrule, the guide pin base 9, the spring 10, and the stop 11 are disposed in the housing, the front end of the housing is sleeved with the dust cap 8, the rear end of the housing is connected to the tail sleeve 15 through the crimp ring 14, the tail of the ferrule is connected to the stop 11, a groove matching the shape of the spring 10 is disposed on the inner wall of the stop 11, so that the spring 10 is clamped in the stop 11, and the ferrule is the ferrule described in any one of the above.

Referring to fig. 2-5, a method for manufacturing a multi-core high-density low-loss connector ferrule includes:

1) fixing the 24-core bare fiber by using a ribbon clamp, wherein the 24-core fiber is evenly divided into 2 rows and placed up and down, and the bare fiber of the 24-core fiber is arranged in an upper row and a lower row which are sequentially alternated into one row; the ribbon bonding jig includes a C-shaped ribbon bonding jig first fixing block 17 and a ribbon bonding jig second fixing block 18, the row of 24-core bare fibers is pushed into the C-shaped ribbon bonding jig first fixing block 17 and fixed by the ribbon bonding jig second fixing block 18;

2) pushing the optical fiber which is subjected to ribbon merging into an optical fiber fixing groove 6 to enable the front end of an optical fiber hole 5 of the ferrule head 1 to expose the bare optical fiber, and taking down the ribbon merging clamp;

3) pushing the optical fiber horizontally to the optical fiber displaying 1/3 in the glue dispensing hole 3;

4) tail glue is dispensed on the optical fiber at the tail part 2 of the inserting core and is solidified;

5) and (4) dispensing the window adhesive at the dispensing hole 3 and curing.

Further, the tail rubber in the step 4) is cured in a thermosetting mode, the thermosetting temperature is 85 +/-5 ℃, and the curing time is 10-30 minutes.

Further, the window adhesive in the step 5 is cured in a thermosetting mode, the thermosetting temperature is 85 +/-5 ℃, and the curing time is 55-65 minutes.

Further, when the head of the ferrule is provided with a plurality of optical fiber holes 5, the steps 1) -5) are sequentially repeated to insert the bare fibers into the optical fiber holes until all the optical fiber holes are inserted with the bare fibers.

Further, the steps 1) to 5) are completed from bottom to top when the head of the ferrule is provided with a plurality of optical fiber holes 5).

The utility model discloses a long through-hole that can insert 24 core bare fiber is made into to the locating hole of multicore high density low-loss connector lock pin, improves the quantity that can insert optic fibre to because the downthehole bare fiber that is one row of locating hole reduces fiber connector's loss.

The utility model discloses a connector can insert 24, 48, 72 or 96 core bare fiber simultaneously, realizes realizing the function that high density reached the loss when not changing the lock pin size.

The above only is the embodiment of the present invention, not limiting the patent scope of the present invention, all the equivalent structures or equivalent processes that are used in the specification and the attached drawings or directly or indirectly applied to other related technical fields are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a multicore high density low-loss connector lock pin, its characterized in that the lock pin includes lock pin head and lock pin afterbody, lock pin head and the fixed setting of lock pin afterbody, the lock pin head is equipped with well cavity, the up end of lock pin head is equipped with the hole of gluing that communicates with well cavity, lock pin head and lock pin afterbody are equipped with the coaxial line and the locating hole that is linked together, lock pin head and lock pin afterbody are provided with respectively with the communicating optical fiber hole of well cavity and optic fibre fixed slot, the lower limb level of optical fiber hole inwards extends into the direction step, the optical fiber hole is used for acceping a plurality of bare fibers of arranging of display, the optical fiber hole with insert inside bare fiber accurate cooperation.

2. The multi-core, high-density, low-loss connector ferrule of claim 1, wherein: the head of the ferrule is provided with a plurality of optical fiber holes which are arranged in parallel and are uniformly distributed.

3. The multi-core, high-density, low-loss connector ferrule of claim 2, wherein: the lower edges of a plurality of optical fiber holes at the head of the ferrule extend horizontally inwards to form guide steps, and the length of each guide step is gradually increased from top to bottom.

4. The multi-core high-density low-loss connector ferrule of claim 3, wherein: and a chamfer is arranged on the outer end face of the guide step.

5. The multi-core, high-density, low-loss connector ferrule of claim 1, wherein: the positioning hole is provided with a chamfer.

6. A multi-core high-density low-loss connector comprises a dustproof cap, a plug core, a guide pin base, a spring, a stop, a shell, a press connection ring, a tail sleeve and an optical cable, wherein the plug core, the guide pin base, the spring and the stop are arranged in the shell, the dustproof cap is sleeved at the front end of the shell, the rear end of the shell is connected with the tail sleeve through the press connection ring, the tail of the plug core is connected with the stop, a groove matched with the shape of the spring is formed in the inner wall of the stop, so that the spring is clamped in the stop, and the multi-core high-density low-loss connector is characterized in that the plug core is the plug core in any one of claims 1-5.