CN209070147U - A kind of optical fiber quick connector - Google Patents

Abstract

The utility model relates to the application field of optical fiber technology, and discloses an optical fiber quick connector, which comprises a connector body with an optical fiber sheathed in the middle, the tail end of the optical fiber extends outside the tail end of the connector main body, and the connector body is close to the optical fiber tail A transverse male tenon is integrally formed on the front and back of the end cover of the end. The optical fiber quick connector drives the extruding ring to move through the T-shaped surface of the tail cap, thereby driving the elastic compression strip on the elastic cylinder to shrink, and uses the bump to compress the connecting end of the optical fiber, and the distribution of the bump It is annular and equidistant, which can compress the outer layer of the optical fiber in a circle, and can control the forming of the extrusion ring according to the screwing distance between the end cap and the compression member, and further control the compression strip on the elastic cylinder. The degree of shrinkage can be adjusted according to the diameter of the outer layer of the optical fiber, which greatly improves the adaptability of the connector.

Description

An optical fiber quick connector

technical field

The utility model relates to the application field of optical fiber technology, in particular to an optical fiber quick connector.

Background technique

The optical fiber connector is a detachable connecting device that precisely butts the two end faces of the optical fiber, so that the optical energy output by the optical fiber is coupled to the receiving optical fiber to the maximum extent.

At present, after the optical fiber is connected to the optical fiber connector, the large movement of the optical fiber connection end will separate the coupling end face of the optical fiber, thereby affecting the energy transmission of the optical fiber. Locking to limit the large movement of the fiber connection end, but this can only avoid the problem that the fiber is detached under the action of non-axial tension. When the pulling force on the fiber is too large, the coupling surface of the fiber will still be separated. At the same time, when the optical fiber is pulled in the axial direction, it is easy to cause the coupling surface of the optical fiber to be separated, so that the optical fiber quick connector needs to be re-installed.

Utility model content

Aiming at the shortcomings of the prior art, the utility model provides an optical fiber quick connector, which has the advantages of high tensile strength, and solves the problem that when the tensile force of the connecting end of the optical fiber is too large, the two coupling end faces of the optical fiber are easily separated. This affects the energy transmission efficiency of the optical fiber.

The utility model provides the following technical solutions: an optical fiber quick connector, comprising a connector body with an optical fiber sheathed in the middle, the tail end of the optical fiber extends out of the tail end of the connector body, and the connector body is close to the end cover of the optical fiber tail end. A horizontal male tenon is integrally formed on the back. The front and back of the tail end cover of the connector body are hinged with the front and rear sides of the bottom of the dust cover through a fixing pin located on one side of the male tenon. The front and rear of the dust cover are hinged. The side wall is integrally formed with a female tenon that fits with the male tenon, and a pressing piece is integrally formed at the center of the tail end of the connector body. The tail end is sheathed with a tail cap adapted to the pressing member, and the end of the optical fiber passes through the tail cap, the pressing ring and the pressing member in sequence from right to left and extends to the interior of the connector body.

Preferably, the dust cover is U-shaped and the length is adapted to the length of the tail end of the connector body.

Preferably, the pressing member comprises an end of an external thread with an external thread, the end of the external thread is fixedly connected to the side wall of the connector body, and the other side of the end of the external thread is integrally formed with a round table It is an elastic cylinder that is shaped and elastic. The diameter of the connecting end of the elastic cylinder and the end of the external thread is larger. The end of the external thread and the elastic cylinder are both hollow and communicate with the main body of the connector. The aperture of the connection is larger than that of the optical fiber. The outer diameter of the elastic cylinder is formed by a strip-shaped groove formed on the side of the elastic cylinder, and a hemispherical bump is fixedly connected to the contact side wall of each compression strip and the optical fiber.

Preferably, the extrusion ring comprises two rigid rings of the same specification and three connecting pins welded together, and the inner hole diameter of the rigid ring is located between the diameter of the port and the diameter of the tail end of the elastic cylinder.

Preferably, the end cap is a rigid threaded sleeve with a T-shaped counterbore in the middle, and the stepped surface in the middle of the end cap is a vertical surface, and the distance between the stepped surface inside the end cap and the port is greater than the distance between the two rigid rings. The aperture value of the small hole inside the tail cap is greater than the outer diameter of the optical fiber, and the side wall of the tail cap inside the large hole is tapped with an internal thread that matches the external thread at the end of the external thread.

Compared with the prior art, the utility model has the following beneficial effects:

The optical fiber quick connector drives the extruding ring to move through the T-shaped surface of the tail cap, thereby driving the elastic compression strip on the elastic cylinder to shrink, and uses the bump to compress the connecting end of the optical fiber, and the distribution of the bump It is annular and equidistant, which can compress the outer layer of the optical fiber in a circle, and can control the forming of the extrusion ring according to the screwing distance between the end cap and the compression member, and further control the compression strip on the elastic cylinder. The degree of shrinkage can be adjusted according to the diameter of the outer layer of the optical fiber, which greatly improves the adaptability of the connector.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is the assembly schematic diagram of the pressing member, the extrusion ring and the tail cap of the present invention;

3 is a schematic diagram of the extrusion ring of the present invention;

4 is a schematic diagram of a radial cross-sectional view of the tail cap of the present invention;

5 is a schematic diagram of an axial cross-section of the structure of the utility model;

FIG. 6 is an enlarged view of part A of FIG. 2 of the utility model.

In the figure: 1. Connector body; 2. Male tenon; 3. Dust cover; 4. Female tenon; , bump; 6, extrusion ring; 61, rigid ring; 62, connecting pin; 7, tail cap.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the implementations. example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

As shown in Figure 1, an optical fiber quick connector includes a connector body 1 with an optical fiber sleeved in the middle, the tail end of the optical fiber extends out of the tail end of the connector body 1, and the connector body 1 is close to the front and back of the end cap of the fiber tail end A horizontal male tenon 2 is integrally formed on the upper part. The front and back of the end cover of the connector body 1 are hinged with the front and rear sides of the bottom of the dust cover 3 through a fixing pin located on one side of the male tenon 2. The front and rear of the dust cover 3 The side wall is integrally formed with a female tenon 4 that fits with the male tenon 2, and a pressing member 5 is integrally formed at the center of the rear end of the connector body 1, and a suitable extrusion ring 6 is movably sleeved on the pressing member 5. The tail end of the optical fiber is sheathed with a tail cap 7 adapted to the pressing member 5, and the end of the optical fiber passes through the tail cap 7, the pressing ring 6 and the pressing member 5 in sequence from right to left and extends to the connector body 1 inside;

The dust cover 3 is U-shaped and the length is adapted to the length of the tail end of the connector body 1. By fitting the dust cover 3 and the connector body 1, the connection of the optical fiber can be effectively dustproof and protected. ;

As shown in FIG. 2 , the pressing member 5 includes an external thread end 51 tapped with an external thread, the external thread end 51 is fixedly connected to the side wall of the connector body 1 , and the other side of the external thread end 51 is integrally formed There is a circular truncated and elastic elastic cylinder 52, the connecting end of the elastic cylinder 52 and the external thread end 51 has a larger diameter, and the external thread end 51 and the elastic cylinder 52 are both hollow and communicate with the connector body 1. The aperture is larger than the outer diameter of the optical fiber, the side of the elastic cylinder 52 forms a ring-shaped pressing strip through the open strip groove 53, and each pressing strip and the contact side wall of the optical fiber are fixedly connected with hemispherical bumps 54, by opening the bar groove 53, the compression bar on the elastic cylinder 52 can have a shrinking space through the bar groove 53 when being squeezed, thereby compressing the optical fiber, and using the bump 54 to connect the optical fiber End compression, improve the tensile strength of the fiber;

As shown in FIG. 3 , the extrusion ring 6 is composed of two rigid rings 61 of the same specification and three connecting pins 62 welded together. The inner hole diameter of the rigid ring 61 is located between the port diameter and the tail diameter of the elastic cylinder 52 . During this time, the compression bar on the elastic cylinder 52 is squeezed through the inner wall of the rigid ring 61, forcing the compression bar to shrink;

As shown in Figures 4 and 5, the end cap 7 is a rigid threaded sleeve with a T-shaped counterbore in the middle, and the stepped surface in the middle of the end cap 7 is a vertical surface, and the distance between the stepped surface inside the end cap 7 and the port is greater than two The distance between the rigid rings 61, the aperture value of the small hole inside the tail cap 7 is greater than the outer diameter value of the optical fiber, and the side wall of the tail cap 7 located inside the large hole is up-tapped with a thread that is adapted to the external thread of the external thread end 51. The inner thread is locked by the thread between the end cap 7 and the end 51 of the outer thread, and the stepped surface inside the end cap 7 is used to drive the extrusion ring 6 to move on the elastic cylinder 52, and squeeze the compression strip on the elastic cylinder 52 Shrinkage, compress the end of the optical fiber to improve the tensile strength of the optical fiber, and with the different moving strokes of the tail cap 7, the closing size of the compression strip can be adjusted arbitrarily, so as to adjust the compression strength according to the similarities and differences of the outer diameter of the optical fiber. , so that the adaptability of the device has been improved.

The installation process of this embodiment is as follows:

Before installing the optical fiber, insert the end cap 7 and the extrusion ring 6 on the end of the optical fiber in sequence, and then install the optical fiber. After the optical fiber is installed, manually move the extrusion ring 6 to the elastic cylinder 52 and press it tightly. Finally, move the end cap 7 to the end 51 of the external thread to align it, and rotate the end cap 7 clockwise. The stepped surface of the end cap 7 drives the extruding ring 6 to move, and the rigid ring 61 on the left is used to drive the elastic cylinder 52. The pressing bar is closed, and finally the bump 54 presses the end of the optical fiber.

It should be noted that, in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any relationship between these entities or operations. any such actual relationship or sequence exists. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus.

Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes and modifications can be made to these embodiments without departing from the principles and spirit of the present invention , alternatives and modifications, the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. An optical fiber quick connector, comprising a connector main body (1) with an optical fiber sleeved in the middle, and the tail end of the optical fiber extends outside the tail end of the connector main body (1), characterized in that: the connector main body (1) A transverse male tenon (2) is integrally formed on the front and back of the end cover close to the optical fiber tail, and the front and back of the tail end cover of the connector main body (1) are connected with each other through a fixing pin located on one side of the male tenon (2). The front and rear sides of the bottom of the dust cover (3) are hinged, the front and rear side walls of the dust cover (3) are integrally formed with female tenons (4) that are adapted to the male tenons (2), and the connector main body ( 1) A pressing member (5) is integrally formed at the center of the tail end, and a suitable pressing ring (6) is movably sleeved on the pressing member (5), and a compression member (6) is sleeved on the tail end of the optical fiber. 5) The end cap (7) is adapted, and the end of the optical fiber passes through the end cap (7), the pressing ring (6) and the pressing piece (5) in sequence from right to left and extends to the connector body (1) )internal. 2 . The optical fiber quick connector according to claim 1 , wherein the dust cover ( 3 ) is U-shaped and the length is adapted to the length of the tail end of the connector main body ( 1 ). 3 . 3. An optical fiber quick connector according to claim 1, characterized in that: the pressing member (5) comprises an external thread end portion (51) tapped with an external thread, and the external thread end portion ( 51) It is fixedly connected to the side wall of the connector main body (1), and the other side of the external thread end (51) is integrally formed with a circular cone-shaped and elastic elastic cylinder (52), the elastic cylinder (52) The diameter of the connection end with the external thread end (51) is larger, the external thread end (51) and the elastic cylinder (52) are both hollow and communicate with the connector body (1), and the communication aperture is larger than that of the optical fiber The outer diameter of the elastic cylinder (52) forms a ring-shaped pressing strip through the bar-shaped groove (53) opened, and each pressing strip and the contact side wall of the optical fiber are fixedly connected with a hemispherical Bumps (54). 4. An optical fiber quick connector according to claim 1, characterized in that: the extrusion ring (6) comprises two rigid rings (61) of the same specification and three connecting pins (62) welded together, The inner hole diameter value of the rigid ring (61) is located between the port diameter value and the tail end diameter value of the elastic cylinder (52). 5. An optical fiber quick connector according to claim 1, characterized in that: the end cap (7) is a rigid threaded sleeve with a T-shaped counterbore in the middle, and the stepped surface in the middle of the end cap (7) is On the vertical plane, the distance from the stepped surface inside the tail cap (7) to the port is greater than the distance between the two rigid rings (61), and the aperture value of the small hole inside the tail cap (7) is greater than the outer diameter of the optical fiber , and the side wall of the tail cap (7) located inside the large hole is up-tapped with an internal thread that is adapted to the external thread of the external thread end (51).