RU211750U1 - POWER DETACHABLE OPTICAL CONNECTOR FOR ARAMID-REINFORCED OPTICAL CABLE - Google Patents

Abstract

The utility model relates to the connection of fiber-to-fiber light guides, as well as to the mechanical structure to ensure tensile strength and external protection of the fibers, and can be used to make a power connection of an optical cable reinforced with aramid threads, for example, with a controlled uninhabited underwater vehicle. EFFECT: increased reliability of a power detachable optical connector for an optical cable reinforced with aramid threads, is achieved due to a power detachable optical connector for an optical cable reinforced with aramid threads, which contains an extended main body, inside which a through axial hole is made, the diameter of which at its rear end provides the passage of an optical cable reinforced with aramid threads, and at its front end the hole is made with the possibility of connecting with the shank of the body of the optical plug, in the middle part the said hole has an increased diameter, forming a cavity intended for filling with glue and gluing aramid threads of the optical cable, the cavity is connected with atmosphere with two radial holes for pouring glue and air outlet, in addition, the extended main body contains an outer shoulder, a union coupling is put on the extended main body, the front part of the optical plug housing contains a guide sleeve, and a hole for the ferrule is made in the front part of the optical plug housing, the rear part of the optical plug housing contains the mentioned shank of the optical plug housing, and in the rear part of the body of the optical plug has a hole for the optical fiber, in the body of the optical plug, protruding from the said hole, there is a spring-loaded ferrule, in addition, the body of the optical plug contains an outer shoulder, a captive connecting nut is put on the body of the optical plug, abutting against the said shoulder. 6 w.p. f-ly, 4 ill.

Description

This utility model relates to the connection of fiber-to-fiber light guides, as well as to the mechanical design for providing tensile strength and external protection of the fibers, and can be used to make a power connection reinforced with aramid strands of an optical cable, for example, with a controlled uninhabited underwater vehicle .

In the prior art, optical cable connectors are known, providing for fixing aramid threads on conical surfaces, for example, described in CN 20443988 1U, 07/01/2015; CN 102207590 A, 05.10.2011; CN 102360104 A, 02/22/2012.

In addition, optical cable connectors are known from the prior art, providing for fixing aramid threads on cylindrical surfaces, for example, described in CN 102870023 A, 01/09/2013; CN 101915964 A, 12/15/2010; CN 1312478 A, 09/12/2001; CN 203519875 U, 04/02/2014; CN 113589459 A, 02.11.2021; CN 109143480 A, 01/04/2019; CN 108508542 A, 09/07/2018; WO 2013/127073 A1, 09/06/2013; WO 2013/117589 A2, 08/15/2013; US 2016/0223764 A1, 08/04/2016; US 2016/0161678 A1, 06/09/2016; US 2009/0087147 A1, 04/02/2009; US 5515466 A, 05/07/1996; JP 2016-512902 A, 05/09/2016; CN 212540781 U, 02/12/2021; CN 207133467 U, 03/23/2018; CN 209231572 U, 08/09/2019, in particular, by using press sleeves, crimp sleeves, including those with longitudinal, transverse, helical grooves on one or both cylindrical surfaces, as well as by using heat shrink tubes or rings.

Also, optical cable connectors are known from the prior art, providing for fixing aramid threads, at least partially with glue, for example, described in CN 209979898 U, 01/21/2020; WO 2011/053461 A1, 05.05.2011; CN 207488551 U, 06/12/2018.

A common disadvantage of the known connectors is low reliability when operating under the influence of external forces, in particular, pull-out due to the pulling effect on the cable. The disadvantage mentioned is due to the transmission of force directly through the details of the optical plug itself.

Thus, the objective of the claimed utility model is to eliminate the shortcomings of the prior art, and the technical result of the claimed utility model is to increase the reliability of a power detachable optical connector for an optical cable reinforced with aramid threads.

Here and below, the concepts of optical plug and detachable optical connector are used in the meanings defined by GOST R 54417-2011.

The mentioned technical result is achieved by a power detachable optical connector for an optical cable reinforced with aramid threads, which contains:

an extended main body, inside which a through axial hole is made, the diameter of which at its rear end ensures the passage of an optical cable reinforced with aramid threads, and at its front end the hole is made with the possibility of connection with the shank of the optical plug body,

in the middle part, the mentioned hole has an increased diameter, forming a cavity intended for filling with glue and gluing the aramid fibers of the optical cable, the cavity is connected to the atmosphere by two radial holes for filling the glue and venting air,

in addition, the extended main body contains an outer shoulder,

a swivel coupling is put on the extended main body, abutting against the said collar,

the optical plug contains connected front and rear parts of the optical plug body,

the front part of the body of the optical plug contains a guide sleeve, and a hole for the ferrule is made in the front part of the body of the optical plug,

the rear part of the body of the optical plug contains the said shank of the body of the optical plug, and a hole for the optical fiber is made in the back part of the body of the optical plug,

in the body of the optical plug, protruding from the said hole, there is a spring-loaded ferrule,

in addition, the body of the optical plug contains an outer collar,

a union nut is put on the body of the optical plug, abutting against the said collar.

In private forms of implementation of a power detachable optical connector for an optical cable reinforced with aramid threads, the technical result is also achieved due to the following.

The extended main body is provided with a removable protruding element that prevents free removal of the union coupling.

The shank of the body of the optical plug is connected to the hole in the extended main body by an adhesive.

Slip-on coupling contains at least one mounting radial hole.

Slip-on coupling contains a mounting flange.

The cap coupling is made with a thread.

The hole in the back of the optical plug housing is equipped with a polymer sleeve.

It should be noted that the described design of a power detachable optical connector for an optical cable reinforced with aramid threads makes it possible to increase reliability by transferring the impact, in particular, pulling, from the cable through the aramid threads pasting to the extended main body and through its shoulder to the union coupling and further to the body the device to which the connection is made, for example, to a controlled uninhabited underwater vehicle, thus, the transmission of the mentioned influence to the details of the optical plug itself is excluded.

This utility model is illustrated by the following graphics:

Fig. 1. Longitudinal section of a power detachable optical connector for an optical cable reinforced with aramid threads.

Fig. 2. Longitudinal section of a power detachable optical connector with an optical cable reinforced with aramid threads.

Fig. 3a and 3b. Examples of the execution of the union coupling.

As shown in FIG. 1 and 2, a detachable power optical connector for an optical cable reinforced with aramid threads contains: an extended main body (1), inside which a through axial hole is made, the diameter of which at its rear end (2) ensures the passage of an optical cable (3) reinforced with aramid threads (4), and at its front end (5) the hole is made with the possibility of connection with the shank (17) of the body of the optical plug (12), in the middle part, the said hole has an increased diameter, forming a cavity (6) intended for filling with glue (7 ) and gluing aramid threads (4) of the optical cable (3), the cavity (6) is connected to the atmosphere by two radial holes (8 and 9) for pouring (8) glue (7) and air outlet (9), in addition, an extended main the body (1) contains an outer shoulder (10), a cap coupling (11) is put on the extended main body (1), abutting against the said shoulder (10), the optical plug (12) contains connected front (13) and rear (14) parts of the body of the optical plug (12), the front part (13) of the body of the optical plug (12) contains a guide sleeve (15), and in the front part (13) of the body of the optical plug (12) there is a hole for the ferrule (16), the rear part (14) of the body of the optical plug (12) contains the mentioned shank (17) of the body of the optical plug (12), and in the back part (14) of the body of the optical plug (12) there is a hole (18) for the optical fiber, in the body of the optical plug (12), protruding from the said hole, there is a spring-loaded ferrule (16), in addition, the body of the optical plug (12) contains an outer shoulder (19), a captive connecting nut (20) is put on the body of the optical plug (12), resting against the collar (19).

In addition, the extended main body is provided with a removable protruding element (21) preventing free removal of the union coupling (11). As the protruding member, a removable protruding pin installed with an interference fit or a taper fit can be used, and, for example, a threaded pin can be used.

As noted earlier, the described design eliminates the transfer of influence to the parts of the optical plug, thus, in the mentioned connection, high bearing capacity is not required, and, mainly, the shank (17) of the body of the optical plug (12) is connected to the hole in the elongated main body (1 ) by gluing, but other connections, such as press-fitting or threaded connections, are also acceptable.

In one embodiment, as shown in FIG. 1 and 2, the box coupler has at least one mounting radial hole (23), for example showing a two hole coupler.

In another implementation example, as shown in FIG. 3a, the union coupling (11) contains a mounting flange.

In another implementation example, as shown in FIG. 3b, the union coupling is threaded. The thread can be made both external and internal.

At the same time, the Applicant does not rule out other special cases of making a union coupling, for example, in the form of a bayonet connection.

The hole in the back of the body of the optical plug is equipped with a polymer sleeve (22).

In addition, as shown in FIG. 2, the elongated main body (1), on the side of the rear end (2), is additionally provided with a polymer shank, in which a hole is also made to ensure the passage of the optical cable (3).

The power detachable optical connector for an optical cable reinforced with aramid fibers consists of the following main parts: an optical plug, an extended main body and a union coupling.

The design of the optical plug is the design of the FC connector defined by the IEC 61754-13 standard, with no metal locking ring or sleeve used, and the shank of the back of the housing is additionally provided with means of connection with the hole in the island extended housing, such as knurling, knurling, fit with gap for gluing, threaded connection and interference fit are also not excluded.

Mounting of a power detachable optical connector on an optical cable reinforced with aramid threads is carried out as follows.

Stepwise removal of cable layers is carried out for the required lengths for each layer, depending on the geometric dimensions of the parts of the power detachable optical connector. In particular, the aramid fibers are released lengthwise according to the position and dimensions of the adhesive cavity.

The cable is threaded through the hole in the main body, with which the optical plug is pre-connected. The optical fiber is connected to the optical plug in a well-known way, using a gel, a cleaver and an abrasive, similar to the connection of an FC connector.

Said cavity is filled with glue supplied through the glue supply hole until it exits through the air outlet. In harsh environments, epoxy adhesives have an advantage, in particular Loctite 3430 adhesive can be used.

After the adhesive has hardened, an optical plug is attached to the mating part, such as a feed-through, in the same way that an FC connector is connected to a feed-through adapter. The ferrule enters the appropriate hole, its axial spring-loaded movement allows you to make the necessary contact in the transfer zone. A centering sleeve, in particular with a key, ensures positioning, and a union nut ensures fixation.

After attaching the optical plug to, for example, a through coupling, the union coupling is connected, for example, to the body of a controlled uninhabited underwater vehicle.

Thus, the transfer of impact, in particular pulling, from the cable is carried out through the gluing of aramid threads and is transmitted to the extended main body, and through its collar to the union coupling, and then to the body, for example, of the mentioned underwater vehicle, which excludes the transfer of the mentioned impact to the parts optical plug, thereby increasing the reliability of the power detachable optical connector for an aramid-reinforced optical cable. It should be noted that the swivel coupler also protects the parts of the optical plug itself.

Claims (7)

1. Power detachable optical connector for an optical cable reinforced with aramid threads, which contains an extended main body, inside which a through axial hole is made, the diameter of which at its rear end provides the passage of an optical cable reinforced with aramid threads, and at its front end the hole is made with the possibility connection with the shank of the body of the optical plug, in the middle part the mentioned hole has an increased diameter, forming a cavity designed for filling with glue and gluing the aramid fibers of the optical cable, the cavity is connected to the atmosphere by two radial holes for pouring glue and venting air, in addition, an extended main body contains an outer shoulder, a swivel coupling is put on the extended main body, abutting against the said shoulder, the optical plug contains connected front and rear parts of the optical plug housing, the front part of the optical plug housing contains a guide sleeve y, and in the front part of the body of the optical plug there is a hole for the ferrule, the back part of the body of the optical plug contains the mentioned shank of the body of the optical plug, and in the back part of the body of the optical plug there is a hole for the optical fiber, in the body of the optical plug, protruding from the said hole, is located a spring-loaded ferrule, in addition, the body of the optical plug contains an outer shoulder; 2. The connector according to claim. 1, in which the extended main body is provided with a protruding element that prevents the free removal of the union coupling. 3. The connector according to claim 1, in which the shank of the body of the optical plug is connected to the hole in the extended main body with an adhesive. 4. The connector according to claim 1, in which the union coupling contains at least one mounting radial hole. 5. The connector according to claim 1, in which the union coupling contains a mounting flange. 6. The connector according to claim 1, in which the union coupling is threaded. 7. The connector according to claim 1, in which the hole in the back of the optical plug body is provided with a polymer sleeve.

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