CN201226039Y - Pin component for optical cable connector - Google Patents

Abstract

The utility model discloses a contact pin part of a fiber connector which includes a contact pin; the contact pin is arranged in the opening part at the front end of a flange disk; the outer ring of the flange disk is fixed with a plurality of O-shaped seal rings in parallel along the coaxial direction. The contact pin part is provided with the O-shaped seal rings on the flange disk; in this way, when the contact pin part is connected with a mounting hole in the isolator of a plug/socket, the O-shaped seal rings can carry out seal production on the inside of the flange disk of the contact pin part.

Description

Pin parts of fiber optic connectors

technical field

The utility model relates to the technical field of optical cable connectors for optical cable communication, in particular to a pin part of the optical cable connector.

Background technique

The existing optical cable connector consists of a plug and a socket. Both the plug and the socket are provided with a pin part connected to the optical fiber in the optical cable. The pin part includes a pin and pin accessories that are directly connected to the optical fiber. The materials are relatively fragile, so the sealing and fixing design of the pins and optical fibers in the optical cable connector is very important, and the pin accessories in the existing pin parts are mainly used for the jack connection with the plug\socket insulator. There is no fixing and tensile structure between the needle part itself and the optical cable. The existing optical cable connector and optical cable are fixed at the tail of the plug/socket housing. The fixing method is generally to crimp the aramid fiber in the optical cable with the crimp sleeve. Due to the need to take into account both the insertion and the fixation of the optical fiber, the housing of the optical cable connector has a complex structure and is difficult to install, and it is also difficult to ensure the stability of the connection between the pin and the optical cable; in addition, the sealing protection between some existing optical cable connectors and the outside mainly exists in the On the connecting shell of the plug and the socket, and the pin part is directly installed in the mounting hole of the plug\socket insulator, the joint surface of the two lacks sealing protection, which also makes the structure of the optical cable connector shell complex, and it is difficult to ensure that the pin Components are tightly sealed.

Utility model content

The purpose of the utility model is to provide a pin component which is tightly sealed with the installation hole in the plug/socket of the optical cable connector.

The technical scheme of the utility model is: a pin part of an optical fiber connector, including pins, which are inserted into the front port of the flange, and the outer ring of the flange is fixed in parallel in the axial direction. an O-ring seal.

The outer ring of the flange is provided with a plurality of annular grooves juxtaposed in the axial direction, and an O-shaped sealing ring is fastened in each annular groove.

The rear end of the flange of the pin part is connected with a rear sleeve, and the outer surface of the tail of the rear sleeve has a tapered surface with a gradually smaller outer diameter. A nut is movably assembled on the outer ring of the tapered sleeve, an axial engagement structure is provided on the joint surface of the inner ring of the nut and the outer ring of the tapered sleeve, and a screw-fit structure is provided on the inner wall of the front end of the nut and the outer wall of the rear sleeve.

The axial engagement structure on the joint surface between the inner nut ring and the outer ring of the taper sleeve is composed of an inward-turned edge on the inner nut ring and an outer-turned edge on the outer ring of the taper sleeve.

The flange of the pin part of the utility model is provided with an O-shaped sealing ring, so that when the pin part is connected with the mounting hole in the plug\socket insulator, the O-shaped sealing ring can seal against the inside of the flange of the pin part. Sealed for protection.

When the pin part of the utility model is in use, the aramid fiber between the outer skin of the optical cable and the optical fiber is clamped between the outer surface of the tapered surface at the tail of the rear sleeve and the inner ring of the tapered sleeve, and the nut is screwed on the rear sleeve. , when the nut is tightened, the nut can push the inner tapered surface of the taper sleeve and the outer tapered surface of the rear sleeve to press fit, thereby fixing the aramid fiber, the taper sleeve and the rear sleeve as a whole. When the optical cable is pulled by an external force, the pulling force is applied to the tapered sleeve and the rear sleeve through the aramid fiber, without affecting the central optical fiber; when the flange or the rear sleeve of the pin part is pulled, the entire optical cable can be affected by the aramid fiber It can be moved without worrying about damaging the central fiber, and it also makes the installation of ferrule parts more convenient.

Description of drawings

Fig. 1 is a schematic structural view of the pin part of the optical cable connector of the present invention.

Detailed ways

As shown in Figure 1, the pin part includes a pin 1, which is inserted into the front port of the flange 2, the rear end of the flange 2 is connected to the rear sleeve 4, and the outer ring of the flange 2 A plurality of annular grooves are arranged side by side along the axial direction, and O-shaped sealing rings 3 are fastened in each annular groove. The outer surface of the tail of the rear sleeve 4 has a tapered surface with a gradually smaller outer diameter, and the inner ring is fitted on the tapered surface. The tapered sleeve 7 is a tapered surface closing structure, and the outer ring of the tapered sleeve 7 is movably equipped with a nut 5. The inner wall of the front end of the nut 5 is provided with an internal thread, and the front of the tapered surface of the rear sleeve 4 is provided with a thread that cooperates with the internal thread of the nut 5. Externally threaded cylinder. The joint surface between the inner ring of the nut 5 and the outer ring of the taper sleeve 7 is provided with an axial engagement structure. Along 10 poses. When in use, the aramid fiber 6 between the outer skin of the optical cable 5 and the optical fiber is clamped between the outer surface of the tapered surface at the tail of the rear sleeve 4 and the inner ring of the tapered sleeve 7, and the nut 5 is screwed on the rear sleeve 4, When the nut 5 is tightened, the nut 5 can push the inner tapered surface of the tapered sleeve 7 to press fit with the outer tapered surface of the rear sleeve 4, thereby fixing the aramid fiber 6, the tapered sleeve 7 and the rear sleeve 4 as a whole. When the optical cable 8 is pulled by an external force, the pulling force is applied to the tapered sleeve 7 and the rear sleeve 4 through the aramid fiber 6 without affecting the central optical fiber; The aramid fiber drives the overall optical cable 8 to move without worrying that the central optical fiber will be damaged, which makes the installation of the pin part more convenient.

Claims (4)

1, a kind of ferrule of optical fiber connector parts comprise contact pin, and contact pin is inserted in the front end oral area of ring flange, it is characterized in that: be fixed with a plurality of O-ring seals on the outer ring of described ring flange vertically side by side.

2, ferrule of optical fiber connector parts according to claim 1 is characterized in that: be provided with a plurality of ring grooves on the outer ring of described ring flange vertically side by side, spiral-lock O-ring seals in each ring groove.

3, ferrule of optical fiber connector parts according to claim 1 and 2, it is characterized in that: the ring flange rear end of described contact pin parts is connected with the back cover, the outside surface of back cover afterbody has the conical surface that external diameter diminishes gradually, correspondence is set with the tapered sleeve that inner ring is a conical surface closing in structure on this conical surface, activity is equipped with nut on the tapered sleeve outer ring, the faying face of nut inner ring and tapered sleeve outer ring is provided with axial occlusion structure, and the front inner wall of nut is provided with the fit structure that spins with back cover outer wall.

4, ferrule of optical fiber connector parts according to claim 3 is characterized in that: the axial occlusion structure on the faying face of described nut inner ring and tapered sleeve outer ring be by turn edge on the nut inner ring that fastens and the tapered sleeve outer ring on outer turning edge constitute.

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