Tight Buffer Fiber Optic Connectors

Abstract

The invention relates to a connector for an optical fiber of a tight-buffered optical cable, which comprises a ceramic contact pin, a contact pin tail handle, an inner sleeve, a shell, a tail bed, a spring, a fastener and the tight-buffered optical cable, wherein the front end of the contact pin tail handle is connected and fixed with the rear end of the ceramic contact pin; the optical fiber of the tight-buffered optical cable penetrates through the central through hole of the ceramic contact pin; an outer sheath is connected with the ceramic contact pin and the contact pin tail handle afterpenetrating into the through hole at the rear end of the contact pin tail handle; the front end of the contact pin tail handle is provided with an annular step; the inner wall of the inner sleeve is provided with an annular step and a contact pin stopping step; the spring is sheathed onto the contact pin tail handle; the contact pin tail handle penetrates into the central through hole of the inner sleeve; the spring is arranged between the annular step of the contact pin tail handle and the annular step of the inner wall of the inner sleeve; the rear end of the contact pin tail handle is sheathed and fixed with the front end of the tail bed after extending out of the rear end face of the inner sleeve; the outer sheath of the optical cable is locked by the fastener; and the shell is sheathed at the outer side of the inner sleeve. The connector for the optical fiber of the tight-buffered optical cable has the advantages that the optical fiber and the outer sheath of the tight-buffered optical cable synchronously do a limit axial movement, thus, the optical fiber is prevented from bending, the phenomenon that a gap is generated between the optical fiber and the butted end face of thecontact pin because the optical cable is pulled is avoided, and the manufacturing process is simplified.

Description

technical field [0001] The invention relates to a tight sleeve optical fiber connector. It belongs to the technical field of optical fiber communication. Background technique [0002] With the continuous development of optical fiber communication technology, the fiber optic cables for supporting applications are diversified. In addition to the indoor single-core optical cables with an outer diameter of 2mm and 3mm for conventional applications, a butterfly-shaped drop-in optical cable for fiber-to-the-home applications has emerged. The conventional indoor single-core optical cable has a loose sleeve structure, that is, the optical fiber and the outer sheath are not tightly connected, and the optical fiber can move in the sheath, while the butterfly lead-in optical cable has a tight sleeve structure, that is, the optical fiber and the outer sheath are tightly connected, and the optical fiber and the outer sheath are tightly connected. There is no gap between the outer sheath...

AI Technical Summary

Problems solved by technology

In the prior art, there are three types of optical fiber connectors for such tight-buffered optical cables: the first type is made of connector parts for conventional indoor single-core optical cables, and the outer sheath is fixed. During the use of the optical fiber connector, internal The optical fiber retracts axially with the pin, and bends or even breaks inside the connector, resulting in loss of optical signal or even circuit breaker; the second type is to lengthen the internal cavity of the connector, so that the internal optical fiber has enough space after the axial retraction with the pin The bending space will not be bent and broken, but there is still the problem of optical signal loss caused by bending; the third type is to tightly connect the outer sheath and the pin through a special metal tail handle. When the pin retracts axially, The tight-sleeved optical cable also retreats accordingly, and the internal optical fiber will not bend, which avoids the loss of optical signals or even circuit breakage caused by optical fiber bending. Gaps in pin end faces resulting in loss of optical signal

At the same time, in the manufacturing process of these three types of connectors, there is a problem that the outer sheath of the optical cable is stripped and the dimensional accuracy is high, and there is a section of optical fiber with a diameter of 0.25mm between the pin and the outer sheath, which is easily broken when exposed.

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