CN-116107039-B - Connector

CN116107039BCN 116107039 BCN116107039 BCN 116107039BCN-116107039-B

Abstract

The invention relates to a connector, which comprises an inner shell and an outer shell movably sleeved on the inner shell along the front-back direction, wherein an inserting core is arranged in an inner cavity of the inner shell, an optical fiber is arranged in the inserting core along the front-back direction, a positioning seat is arranged at the rear end of the inserting core, a pushing spring for providing forward pushing force for the inserting core is arranged at the rear end of the positioning seat, a limiting seat for limiting the pushing spring in the inner shell is inserted at the rear end of the inner shell, a rear shell which is connected with the inner shell and used for the optical fiber to pass through is arranged at the rear end of the connector, and a cavity used for accommodating the optical fiber and bending the optical fiber when the connector is in butt joint is arranged in the rear shell. The rear shell with the cavity is arranged at the tail part of the connector, and when the number of optical fiber cores penetrating through the connector is more or the bending space in the connector is smaller, the optical fiber can bend and back in the cavity of the rear shell, so that the butt joint reliability of the connector is ensured.

Inventors

ZHANG LAIFENG
XIE QINGLU
WU PAILEI
SUN YALEI

Assignees

中航光电(广东)有限公司

Dates

Publication Date: 20260505
Application Date: 20221230

Claims (8)

1. The connector comprises an inner shell and an outer shell movably sleeved on the inner shell along the front-back direction, wherein an inserting core is arranged in an inner cavity of the inner shell, an optical fiber is installed in the inserting core along the front-back direction, a positioning seat is arranged at the rear end of the inserting core, a pushing spring for providing forward pushing force for the inserting core is arranged at the rear end of the positioning seat, a limiting seat for limiting the pushing spring in the inner shell is inserted at the rear end of the inner shell.
2. A connector as set forth in claim 1, wherein the connecting feature is a groove communicating with the cavity, the mating connecting feature is a protrusion on both sides of the rear end of the inner housing, the protrusion is snapped into the groove in a direction perpendicular to the front-rear direction to connect the inner housing with the rear housing, and a groove surface of the groove abuts against the rear end of the limit seat to axially limit the limit seat.
3. The connector of claim 1, wherein the retainer has an inner bore extending longitudinally therethrough for the passage of the optical fiber.
4. A connector according to claim 1, wherein the rear end of the retainer is provided with an inclined surface for guiding the inner housing and the retainer together during loading into the rear housing.
5. A connector according to claim 2, wherein the rear end of the rear housing is provided with a support for the optical fiber.
6. A connector as set forth in claim 5, wherein the rear housing is provided with a support mounting groove, and the front end of the support is provided with a mounting projection by which the support is fitted into the support mounting groove in the radial direction.
7. A connector as set forth in claim 5, wherein the rear housing and the supporting member are integrally formed to form an integral part, and the upper side of the integral part is provided with an opening penetrating in the front-rear direction for accommodating the optical fiber therein in a direction perpendicular to the front-rear direction.
8. A connector as set forth in claim 1, wherein the rear housing has a recess feature on an upper side of a front end thereof, the cover plate has a male key feature on a front end thereof, the male key feature is engaged into the recess feature to achieve a limit fit of the cover plate with the rear housing in a front-rear direction and a direction perpendicular to the front-rear direction, and the rear housing is fastened with the cover plate by screws.

Description

Connector Technical Field The invention belongs to the technical field of connectors, and particularly relates to an MPO optical fiber connector. Background With the unprecedented increase of the data demand of communication networks such as 5G, data centers and the like, the data volume of equipment operation cabinets which need to transmit communication simultaneously is larger and larger, so that higher requirements are put forward on the density of an optical fiber network, the traditional wiring and wiring cannot meet the development requirements, and the high-density multi-core MPO connector plays a key role in equipment interconnection, so that the high reliability requirement of the MPO connector is very important. In the prior art, the Chinese patent publication number CN202453542U discloses an optical fiber connector, which comprises a shell component, a core inserting component inserted in the shell component and a holding seat for holding the core inserting component in the shell component, wherein cantilevers are arranged on the holding seat in pairs, raised barbs are arranged on the cantilevers and used for locking parts in the shell component, the tail parts of the holding seat are connected with an optical fiber cable, when the connector is installed, the optical fiber needs to back along the opposite inserting direction of the connector, when the number of the optical fiber cores is small, the optical fiber can back in the optical cable, but when the number of the optical fiber cores is large or the bending space is small, the optical fiber back is difficult, the core inserting cannot smoothly axially float, and the connector is in poor butt joint. Disclosure of Invention The invention aims to provide a connector to solve the technical problem that optical fibers cannot smoothly retract inside the connector in the prior art. The invention aims at solving the technical problems by adopting the following technical scheme. The connector comprises an inner shell and an outer shell movably sleeved on the inner shell along the front-back direction, wherein an inserting core is arranged in an inner cavity of the inner shell, an optical fiber is arranged in the inserting core along the front-back direction, a positioning seat is arranged at the rear end of the inserting core, a pushing spring for providing forward pushing force for the inserting core is arranged at the rear end of the positioning seat, a limiting seat for limiting the pushing spring in the inner shell is inserted into the rear end of the inner shell, a rear shell connected with the inner shell and used for the optical fiber to pass through is arranged at the rear end of the connector, and a cavity used for accommodating the optical fiber and bending the optical fiber when the connector is in butt joint is arranged in the rear shell. Further, the rear shell is provided with a connecting feature, the inner shell is provided with an adapting connecting feature, the connecting feature is matched with the adapting connecting feature so that the inner shell can be arranged in the rear shell along the direction vertical to the front-back direction, and meanwhile, the rear shell abuts against the limiting seat so as to fix the limiting seat in the inner cavity of the inner shell. Further, the connection characteristic is a groove communicated with the cavity, the adapting connection characteristic is matched with the bulges at the two sides of the rear end of the inner shell, the bulges are clamped into the grooves along the direction vertical to the front and back to realize the connection between the inner shell and the rear shell, and the groove surface of the groove props against the rear end of the limiting seat to realize the axial limiting of the limiting seat. Further, the limiting seat is provided with an inner hole which is communicated in the front-back direction and used for the optical fiber to pass through. Furthermore, the rear end of the limit seat is provided with an inclined plane which plays a guiding role in the process that the inner shell and the limit seat are assembled into the rear shell together. Further, a support member for threading the optical fiber is provided at the rear end of the rear housing. Further, a support piece mounting groove is formed in the rear shell, a mounting convex portion is arranged at the front end of the support piece, and the support piece is radially arranged in the support piece mounting groove through the mounting convex portion. The rear shell and the supporting piece are integrally formed to form an integrally formed piece, an opening is formed in the upper side of the integrally formed piece, the opening is arranged in a penetrating mode along the front-rear direction, and the opening is used for enabling optical fibers to be installed in the integrally formed piece along the direction perpendicular to the front-rear direction. Further, the rear housing upper cover is provided wit