SU1597824A1 - Multi-pole plug-and-socket fiber-optic connector for multi-core optical cables - Google Patents

Abstract

The invention relates to optical fibers, in particular to connectors for multicore optical cables, and allows for improved reliability and manufacturability of the connector assembly. Spring guides provide soft docking for semi-plugs. Combs, in the V-shaped grooves of which the fibers are pressed by elastomer gaskets with movable brackets and screws, are inclined at an angle of 10-20 ° to the cylindrical rollers that form the centering grooves for the ends of the fibers freed from protective shells. When docked, the guide rollers enter the grooves. The ends of the fibers are pressed against the rollers with an elastomeric insert. 7 il.

Description

The invention relates to optical fibers, in particular to connectors for multicore optical cables.

The purpose of the invention is to increase the reliability and the manufacturability of the connector assembly.

FIG. 1 shows a connector, a general view; in fig. 2 is a section A-A in FIG. one; FIG. 3 is a section BB in FIG. 2; in fig. 4 shows a section B-B in FIG. 3; in fig. 5 is a cross-section of the FIG. I; in fig. 6 is a section DD-D in FIG. 2; in fig. 7 — node I in FIG. one.

The connector contains half connectors I and 2, shells 3 and 4, base 5, cable fastener assembly 6, storage chamber 8, fiber fastening assembly 9 along the protective sheath, guide assembly 10, fixing unit for the ends of the fibers

shells II, guides 12 with springs 13, protective sheaths of fibers 14, placed in transverse V-shaped grooves 15 of comb 16, pressed by elastomer pads 17 located in U-shaped grooves 18, movable brackets 19, side slots 20 of bar 21 with a set of screws 22, a pressing plate 23, a L-shaped plate 24 for lateral pressing of cylindrical rollers 25, a longitudinal groove 26, a guide roller 27, a stop assembly 28 with a bar 29 inserted into the groove 30 on the base plane 31 of the base 5, grooves 32 on the rollers 25, the ends of the fibers 33, the corner 34 with the groove 35 and EL a one-dimensional insert 36, which is simultaneously located in the slots 37 of the rollers 25. The diameter of the rollers 27 is 2 microns smaller than the diameter of the rollers 25. The comb is 16

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cloned to the rollers 25 at an angle of 10--20 ° (Fig. 2). In the unit 7 there are recesses for the guides 12, and in the base 5 a protrusion for an emphasis of the bar 24.

The device works as follows.

Enclosures 3 and 4 are put on the cable sheath 7. The optical cable 7 is inserted into the node 6, which is connected with the base 5 by means of the guides 12 of the springs 13. On the base 5, the storage chamber 8, the comb 16 with movable brackets 19, the bar 21 with a set of screws 22, cylindrical rollers 25, a guide roller 27 fixed on the locking bar 29. Then the technological roller is inserted, then the rollers 25 and 27 are pressed by the plate 23 and the L-shaped bar 24 of the side clamp and are fixed by means of fasteners.

The optical fiber prepared for assembly is introduced through the grooves of the assembly 9 into the grooves formed by the cylindrical rollers 25. Then the optical fibers 33 without the protective sheath are fixed with the aid of the assembly II and the pre-installed technological stop is removed. The length of the light fibers in the protective sheath is placed in the storage chamber 8. The technological roller is removed. Then the optical fibers are clamped over the protective sheath with the help of screws 22. The connection of semi-plugs 1 and 2 is carried out by inserting guide rollers 27 and grooves 26 of semi-plugs 1 and 2, formed after removing the technological rollers. Since the cylindrical rollers 25 are made with an accuracy of 1 µm in diameter, the position of the connecting cavities strictly corresponds to the position of the guide rollers 27. The shafts of the grooves formed by the cylindrical rollers 25 on the half connector 1 correspond to the position of the same grooves on the counter part of the half connector 2.

This ensures docking of the optical fibers with the required accuracy (loss, 3–0.4 dB)

On the joined half-connectors 1 and 2, they push and fasten the housings 3 and 4. Spring-loaded guides 12 provide a soft docking.

If it is necessary to re-transfer one of the optical fibers, it is necessary to open the connector and perform operations to release the optical fibers by pushing it from the storage chamber 8. Restore the required length and carry out all the operations to prepare the optical fibers, then fix it using the described operations.

Due to the inclination of the comb 16, the matching of the fibers is more reliable and accurate.

Claims (2)

1. Multi-pole detachable fiber-optic connector for multicore optical cables, consisting of two half connectors, each of which contains a housing, a base, a cable fastening assembly, a storage chamber for optical fibers, fiber attachment unit along the protective sheath, including a bar with a set of screws and an inclined comb with Y-shaped transverse grooves, guide assembly with centering cylindrical rollers and a fixing unit for fiber ends, including clamping and elastomeric elements, characterized in that, in order to increase the reliability of the connector’s assembly and its workability, the springs fixed to the base and fitted with springs are inserted into the connector, the mount is made by the protective sheath, equipped with movable brackets and elastomer gaskets installed under the screws, and the U-shaped the transverse grooves in the combs are made roughened, the guide assembly is fixed to the base with a plate, an L-shaped bar and a retaining bar; . 2. A connector according to claim 1, characterized in that the angle of inclination of the comb is selected in the range of 10-20 ° with respect to the centering cylindrical rollers. 4 6 5 9 ten  , AGN / . Y CTTIZIII. 5 8 6 d / ILL 1 7 2 1 22 (ig.d. 2 / Have BUT 2 30 J .g, 5 27 33 25 27