CN-116299878-B - Connector

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, 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, the connector further comprises a rear shell, a connecting feature is arranged on the rear shell, an adapting connecting feature is arranged on the inner shell, the connecting feature is matched with the adapting connecting feature so that the inner shell is arranged in the rear shell along the direction perpendicular to the front-back direction, and the rear shell props against the limiting seat so as to fix the limiting seat in the inner cavity of the inner shell. According to the invention, the inner shell and the rear shell adopt a radial mutually buckled mounting mode, a cantilever beam structure is not required to be arranged, the limiting seat is integrally arranged in the inner cavity of the inner shell and is fixed through the rear shell, and external acting force is not transmitted to the limiting seat any more, so that the problems of buckle failure and cantilever fracture are fundamentally solved.

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 (9)

1. 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. 2. The connector of claim 1, wherein the connecting feature is a groove formed in the rear housing, the mating connecting feature is a protrusion formed on two sides of the rear end of the inner housing, the protrusion is snapped into the groove along a direction perpendicular to the front-rear direction to connect the inner housing and 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. 3. The connector of claim 1, wherein the front end of the limiting seat is provided with a limiting groove, and the rear end of the pushing spring is arranged in the limiting groove, and the limiting groove is used for preventing the pushing spring from being skewed after being compressed.
4. 4. A connector as set forth in claim 3, wherein the retainer has an inner bore extending longitudinally therethrough, the inner bore being in communication with the slot for passage of the optical fiber.
5. 5. 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.
6. 6. A connector according to claim 1, wherein the rear end of the rear housing is provided with a support for the optical fiber.
7. 7. A connector as set forth in claim 6, 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.
8. 8. A connector as set forth in claim 6, wherein the rear housing is integrally formed with the support member to form an integral part, and wherein the integral part is provided with an opening provided on an upper side thereof, the opening being provided through in a front-rear direction, the opening being for accommodating the optical fiber in the integral part in a direction perpendicular to the front-rear direction.
9. 9. 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 No. 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 cantilever arms are arranged on the holding seat in pairs, raised barbs are arranged on the cantilever arms for locking parts in the shell component, elastic deformation is needed when the cantilever arms are installed, but the deformation of the elastic arms can lead to the problem of buckle failure and the problem of cantilever arms fracture. Disclosure of Invention The invention provides a connector, which fundamentally solves the problems of buckle failure and cantilever fracture. The invention aims at solving the technical problems by adopting the following technical scheme. The connector comprises an inner shell, an outer shell movably sleeved on the inner shell along the front-back direction, an inserting core arranged in the inner cavity of the inner shell, an optical fiber arranged in the inserting core along the front-back direction, a positioning seat arranged at the rear end of the inserting core, a pushing spring for providing forward pushing force for the inserting core, a limiting seat inserted into the rear end of the inner shell and used for limiting the pushing spring in the inner shell, and a rear shell, wherein a connecting feature is arranged on the rear shell, an adapting connecting feature is arranged on the inner shell, the connecting feature is matched with the adapting connecting feature to enable the inner shell to be installed in the rear shell along the direction perpendicular to the front-back direction, and the rear shell abuts against the limiting seat to fix the limiting seat in the inner cavity of the inner shell. Further, the connecting feature is a groove formed in the rear shell, the adapting connecting feature is matched with protrusions on two sides of the rear end of the inner shell, the protrusions are clamped into the grooves along the direction perpendicular to the front-rear direction to achieve connection between the inner shell and the rear shell, and the groove surface of the groove abuts against the rear end of the limiting seat to achieve axial limiting of the limiting seat. Further, the front end of the limiting seat is provided with a limiting groove, the rear end of the pushing spring is arranged in the limiting groove, and the limiting groove is used for preventing the pushing spring from being inclined after being compressed. Further, the limiting seat is provided with an inner hole which is communicated with the limiting groove along the front-back direction, and the inner hole is 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. Further, 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 communicated in the front-rear direction, and the opening is used for accommodating the optical fiber into the integrally formed piece in the direction perpendicular to the front-rear direction. Further, a cover plate for limiting the movement of the inner housing in a direction perpendicular to the front-rear direction is provided on the rear housing. Further, the upper side of the front end of the rear shell is provided with a concave feature, the front end of the cover plate is provided with a convex key feature, the convex key feature enters the concave feature to realize limit fit of the cover plate and the rear shell in the front-back direction and the front-back directi