RU214395U1 - Bare fiber adapter - Google Patents

Abstract

The utility model relates to the field of computer telecommunications, namely, to fiber optic connectors, and is intended for prompt connection of a bare unterminated optical fiber to optical connectors of measuring instruments, equipment of fiber optic communication lines and other devices. The technical result, to which the proposed technical solution is directed, is the implementation of a reliable connection by fixing the measured fiber with a clamp. For this, a device is proposed that contains a housing with a hole, fixed rigidly on the base, an adapter connector, rigidly installed in the housing hole with screws, represented by a cylindrical housing on a square flange and having an external thread on both sides, onto which the adapter is screwed on one side. a connecting cord, and on the other side a catcher, while on the other side of the catcher there is an inlet for the fiber, into which a glass horn is rigidly installed, the catcher fixes the quoting unit containing a spring and a capillary, with which the knot is installed in the connector of the adapter, at the end of the catcher is rigidly installed L-shaped clamp, consisting of a rod, a spring and a clamping washer, so that one of the clamping planes contains a hole installed on the catcher hole, the other plane contains a hole in which a rod with a thread on the inside, a spring and a clamping washer are located screwed onto the stem thread. 2 w.p. f-ly, 2 ill.

Description

Technical field

The claimed bare fiber adapter AGV-5 (hereinafter referred to as AGV) refers to fiber optic connectors and is designed for quick connection of bare unterminated optical fiber to optical connectors of measuring instruments, equipment of fiber optic communication lines and other devices.

State of the art

In the prior art, various methods and devices for connecting a bare optical fiber to equipment are known.

Known PORTABLE DEVICE FOR ATTACHING A CONNECTOR TO OPTICAL FIBER according to RF patent 2640096 refers to portable devices for attaching a connector to an optical fiber. The claimed connector is configured to receive an optical fiber and further comprises a connector body, a fiber attachment element placed in the connector body, and a thermoforming material located around the fiber attachment element and installed to receive the optical fiber between the fiber attachment element and the thermoformable material and to attach the optical fiber to the fiber attachment element. At the same time, the fiber optic connector for mechanical connection with another fiber optic connector contains an optical fiber having a bare end, which has an end face and contains a core and a sheath surrounding the core, while the sheath has a radius of curvature on the end face in the range from 0.4 mm to 4 mm. EFFECT: high wear resistance during a sequence of dockings and undockings. The disadvantages of this connection are:

- the need to spend a separate connector for each measured fiber;

- in addition to the measurement time, additional time is required to connect the fiber to the connector.

Known CONNECTOR FOR TELECOMMUNICATION ENCLOSURES according to RF patent No. 2597075, the invention relates to connectors for telecommunication cases. A feature of the claimed connector is that it includes a main body containing an internal channel extended from the first end to the second end of the main body; a compressing member configured to be attached to the second end of the main body to compress the inner sealing member between the second end of the main body and the compressing member, the inner sealing member comprising an elastomeric part and a rigid part; and an optical connection section, at least partially located in the inner channel and having an outer housing, the outer shape of which allows pairing with a standard format mating optical receiving element. The technical result is to provide more connections in the telecommunications case, to provide faster installation. The disadvantages of this connector are:

- the need to spend a separate connector for each measured fiber;

- in addition to the measurement time, additional time is required to connect the fiber to the connector.

US Pat. No. US5,263,105 describes a connector for connecting a fiber optic cable to a receptacle, wherein the fiber optic cable has a first end and a first predetermined length of a first bare optical fiber extends from the first end. The connector assembly contains a clamping device for holding the second optical fiber. The clamping device has a first end, a second end, a central axis extending between the first end and the second end, and an opening extending along the central axis. The first part of the second optical fiber is located in the hole, and the second part of the second optical fiber extends from the first end of the ferrule. The connecting node also contains a device for splicing the second part of the second optical fiber with the first predetermined length of the first bare optical fiber. The housing encloses the splicer, the second part of the second optical fiber and the first predetermined length of the first bare optical fiber. The body provides a deformation relief for the first predetermined length of the first bare optical fiber and for the second part of the second optical fiber. The disadvantages of this device compared to AGV-5 are:

- the presence of 2 clamping devices instead of one and, accordingly, twice as long for connecting the fiber;

- the cable connected to the socket is a consumable item and will need to be replaced after a series of measurements

From Chinese Patent No. CN 103676019, a fiber optic connector is known to prevent bare fiber splicing, comprising a plug-in core, a tail base, a bushing, and an end cap. The plug-in core contains a ceramic plug-in head and a metal insert-core of the insert, and mounting grooves are oppositely made in the tail part of the metal insert-insert. The tail base is made square and is formed by a clamping upper base case and a lower base case, the upper base case and the lower base case, respectively, are provided with a convex rib or mounting block. The metal insert-core is tightly pressed in the inner cavity of the square shank, the mounting grooves are fixed by the corresponding mounting blocks or convex ribs, while the insert core, the base of the square shank and the spring are combined and closed with the sleeve, and the end cap is clamped in the tail part of the sleeve. Due to the fact that the optical fiber optic connector that does not allow bare fiber butt splicing is reasonable in design, a unique way of locating and limiting in the insert core, fast reassembly in place, eliminating bare splicing at the splice can be performed, solves the problem of building in the field, simplifying the manufacturing process in place, increasing the efficiency of optical efficiency and ensuring reliability during long-term use. The disadvantages of analog are:

- the need to spend a separate connector for each measured fiber;

- in addition to the measurement time, additional time is required to connect the fiber to the connector.

A device for quick connection of fibers UP-125 for quick, in a few seconds, connection of the fiber to the reflectometer, optical telephone, tester or other equipment is known. On the one hand, it is terminated with a connector, and on the other hand, with a glass-ceramic shank, in which a precision channel for an optical fiber with a diameter of 125 microns is made.

The disadvantages of the UP-125 device are:

- weak fixation of the measured fiber in the device and the need to support the measured fiber by hand, which makes it difficult to perform operations with the connected device;

- non-repairability of the product.

Known device UPOV-SM-FC/UPC SSD (UPOV) consisting of a base on which a modernized optical socket FC is fixed with a stop glued into it. A ceramic ferrule with a metal holder and a spring is inserted into the FC socket from the side of the stop, ensuring that the ferrule flange fits on the stop surface. The connection point of the ferrule to the socket is closed by a housing with an axial hole, which is screwed into the threaded part of the base. A thick immersion gel is applied to the end of the ceramic part of the ferrule. The disadvantages of this device are:

- weak fixation of the measured fiber in the device and the need to support the measured fiber by hand, which makes it difficult to perform operations with the connected device;

- does not have a wide and smooth (glass) catcher for the measured fiber, which leads to contamination and chipping of the end of the measured fiber.

The closest accepted prototype to the claimed solution is the bare fiber adapter AGV-4 TIZHA 2.766.021TU, which provides alignment of the optical fiber (OF) to be measured with a fiber from the optical patch cord of a selected length and having a connector at the output end that corresponds to the equipment or equipment to which the optical fiber is connected. AGV-4. The device consists of a case 1 connected by screws and a threaded thread, a catcher 3, a quotation unit 6 and an adapter connector 4 for connecting optical cords. Connecting cord 2 is connected to one end of connector 4, and a catcher 3 is installed on the threaded connection from the other end of connector 4 for entering the measured fiber. For the purpose of easy entry and maintaining the cleanliness of the end of the measured fiber, the catcher is equipped with a glass horn 5, the quoting unit 6 is located inside the catcher 3 and is pressed by the catcher 3 against the connector-adapter 4. The disadvantages of the prototype are:

- weak fixation of the measured fiber in the device and the need to support the measured fiber by hand, which makes it difficult to perform operations with the connected device.

Utility Model Disclosure

The technical problem to be solved by the claimed utility model is the implementation of the possibility of using the device when carrying out operations with measuring instruments and the possibility of reconnecting the measured fiber to different measuring instruments.

The technical result of the claimed utility model is to implement a reliable connection by fixing the measured fiber with a clamp.

The technical result of the claimed utility model is achieved by the fact that a bare fiber adapter AGV-5 is proposed, containing a housing with a hole fixed rigidly on the base, an adapter connector rigidly installed in the housing hole with screws, represented by a cylindrical housing on a square flange and having on both external thread, on which a connecting cord is screwed on one side of the adapter, and a catcher on the other side, while on the other side of the catcher there is an inlet for the fiber, into which a glass horn is rigidly installed, the catcher fixes the quoting unit containing a spring and a capillary, which the assembly is installed in the connector of the adapter, at the end of the catcher, an L-shaped clamp is rigidly installed, consisting of a rod, a spring and a pressure washer, so that one of the clamp planes contains a hole installed on the catcher hole, the other plane contains a hole in which rod having a thread on the inside, pr spring and pressure washer screwed onto the threads of the stem.

In preferred options:

- the base of the housing may contain a magnet;

- in the upper part of the body between the adapter and the quotation unit, a vertical hole for the immersion liquid can be located.

The combination of the above essential features leads to the fact that:

- increases the service life due to the high degree of maintainability of the device;

- reliable fixation of the measured fiber is provided, and it remains possible to operate the device without fixing the fiber if necessary;

- convenient connection of the measured fiber is provided due to the use of a glass catcher funnel.

Brief description of the drawings

In FIG. Figures 1 and 2 show the diagrams of the fiber-optic connector (the claimed bare fiber adapter AGV-5), where the numbers indicate:

1 - Housing;

2 - Connecting cord;

3 - Catcher;

4 - Connector adapter;

5 - Glass mouthpiece;

6 - Quotation node;

7 - Stock;

8 - Spring;

9 - Pressure washer.

Implementation and implementation examples

Below is an example of a specific implementation of the device, which does not limit the options for its execution.

The inventive bare fiber adapter (AGV-5) provides alignment of the optical fiber (OF) to be measured with a fiber from the optical patch cord of a selected length and having a connector at the output end corresponding to the equipment or equipment to which the optical fiber is connected.

A fiber-optic connector is proposed according to figures 1 and 2, which is a device that allows you to connect the ends of the measured fiber and the connecting cord 2. The device is a monolithic case 1 in the form of a plate with a hole, rigidly fixed vertically on the base. Connector adapter 4 is installed in the opening of housing 1, attached to it with screws, connector adapter 4 is a cylindrical housing mounted on a square flange and has external threads on both sides, connecting cord 2 is screwed on one side of adapter 4, and on the other catcher 3 is screwed on the side, which directs the measured fiber to the quoting unit 6. Catcher 3 is a cylinder with a through hole, on the one hand, catcher 3 has an internal thread, with which adapter 4 is screwed onto the connector, on the other side of catcher 3 there is an entry hole for entry connected fiber. In order to conveniently enter and keep the end of the measured fiber clean, a glass horn 5 is inserted into the inlet and fixed with glue. connector of the connecting cord 2 (for example, the SCO-I patch cord).

The adjusting unit 6 is located inside the catcher 3 and is a capillary connected by laser welding, with a diameter corresponding to the diameter of the measured fiber, and a clamping spring. The adjusting unit 6 is inserted by a capillary into the socket of the adapter 4 and is fixed in it by means of the pressure of the catcher 3 on the spring of the adjusting unit 6.

To ensure fixation of the measured fiber in the device, there is a clamp, according to figure 2, which is an L-shaped body with a hole in one of the planes for installing it on the catcher 3 and fixed on the catcher 3 from the side of the end face with an inlet using a screw (not shown on the drawings). In the other plane of the L-shaped body there is a through cylindrical recess, into which are inserted: a cylindrical rod 7, having a thread on one side, and on the other side a flat end for easy pressing on it, and the spring 8, the rod 7 and the spring 8 are held in a cylindrical recess the clamp body using the clamping washer 9 screwed onto the thread of the rod 7 after installing it together with the spring 8 in the clamp body. Rod 7 has the ability to move inside the hole. When the rod 7 is pressed, a gap is formed between the clamp body and the clamping washer 9, by placing the measured fiber in the gap and releasing the rod 8, the measured fiber is fixed.

In the upper part of the housing 1, there can be a special vertical hole through which an immersion liquid can be poured into the space between the ferrule of the adjustment unit 6 and the adapter 4, due to which the insertion attenuation at the junction of the fiber and the connector is reduced, the back reflection is suppressed, and the friction of the fiber when it is introduced into the alignment unit 6, and the probability of fiber jamming in the adjustment unit 6 is also reduced.

For the convenience of fixing the AGV-5 at the workplace, a magnet is installed inside the base of the housing 1, the magnet can also be installed on the plane of the location of the base of the housing 1, or not inside the housing 1, but on the base plane.

To minimize optical losses during joining, it is possible to supply an immersion liquid to the fiber joining zone.

The proposed device AGV-5 has a collapsible design that allows for its maintenance and repair.

Thus, the proposed solution ensures reliable fixation of the measured fiber, while after connecting the fiber to the AGV and fixing it in the clamp, during operation no additional efforts are required to keep the fiber in contact with the AGV when working with connected equipment and devices, the connection is not broken. when moving the AGV at the workplace, it also remains possible to work without fixing the fiber when necessary.

Claims (3)

1. A bare fiber adapter, characterized in that it contains a housing with a hole, fixed rigidly on the base, an adapter connector, rigidly installed in the housing hole with screws, represented by a cylindrical housing on a square flange and having an external thread on both sides, to which one of the sides of the adapter is screwed with a connecting cord, and on the other side a catcher, while on the other side of the catcher there is an inlet for the fiber, into which a glass horn is rigidly installed, the catcher fixes the adjusting assembly containing a spring and a capillary, with which the assembly is installed in the connector of the adapter, at the end of the catcher, an L-shaped clamp is rigidly mounted, consisting of a rod, a spring and a clamping washer, so that one of the clamp planes contains a hole installed on the catcher hole, the other plane contains a hole in which a rod is located, having a thread on the inside , a spring and a clamping washer screwed onto the stem thread. 2. The device according to claim 1, characterized in that a magnet is installed at the base of the housing. 3. The device according to claim. 1, characterized in that in the upper part of the housing between the adapter and the adjustment unit there is a vertical hole for the immersion liquid.

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