CN207663096U - Lead pulling eye optical patchcord - Google Patents

Abstract

The utility model discloses a kind of lead pulling eye optical patchcord, including connector and optical patchcord, connector includes shell and light contact, the open end fixing assembling of shell has limit base and optical fibre conduit, optical fibre conduit has fairlead, light contact connects optical patchcord, optical patchcord passes through outlet after fairlead, optical fibre conduit includes upper rotation pipe, helical spring and backspin tube, vertical bend of upper rotation pipe passes down through helical spring connection backspin tube, the junction both ends of helical spring are respectively equipped with the first attaching nut of connection being welded as a whole with helical spring and bolt, the junction of upper rotation pipe and helical spring is equipped with the second attaching nut, first attaching nut and the second attaching nut are equipped with locked screw hole.The utility model can reach the other end within the scope of elastic force from one end of backspin tube, and under the supporting role of the supporting surface and under the elastic acting force of helical spring, prevent fairlead cutting optical cable and optical cable and occurred by bad problem is rolled over.

Description

Lead pulling eye optical patchcord

Technical field

The utility model is related to field fiber more particularly to a kind of lead pulling eye optical patchcords.

Background technology

In order to connect up convenient needs, it usually needs by the tail portion bending of optical fiber, however optical fiber has sternly radius bend The requirement of lattice, therefore current way is that the tail portion of optical fiber is provided with corresponding protection attachment, it is relatively conventional in the market to be Using curved formula LC optical fiber connectors, curved formula LC optical fiber connectors alleviate optical fiber curved transitions and damage to a certain extent Problem, but since its fairlead is generally soft rubber sleeve, optical patchcord often needs to have on its outlet direction Certain stretching resistance, when optical cable in its bending direction by larger pulling force F when, optical fiber and curved formula sheath are from fairlead Tail portion at bend, at this point, the end of fairlead forms the edge structure of cutting optical fibre and curved formula sheath, this will directly lead The increase of electroluminescence cable loss, or even the optical cable that fractures.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of lead pulling eye optical patchcord, with solution The problem of certainly existing fairlead fragile optical fiber.

The technical solution of the utility model is as follows：A kind of lead pulling eye optical patchcord, including connector and optical patchcord, institute It includes the light contact of shell and assembly in the housing equipped with one end open to state connector, and the open end of the shell is fixed It is equipped with limit base and optical fibre conduit, there is the optical fibre conduit fairlead, the smooth contact to be connected with the optical fiber and jump Line, it includes upper rotation pipe, helical spring and backspin that the optical patchcord, which passes through outlet after the fairlead, the optical fibre conduit, Tube, vertical bend of the upper rotation pipe pass down through the helical spring connection backspin tube, and the backspin tube bends court Descend and make the outlet of fairlead towards the outlet direction of optical patchcord, the junction both ends of the helical spring be respectively equipped with Helical spring is welded as a whole the first attaching nut of connection and bolt, the upper rotation pipe and the junction of helical spring are equipped with Second attaching nut, first attaching nut and the second attaching nut are equipped with locked screw hole, are equipped in the locked screw hole The upper end of locked screw, the backspin tube is threaded into the first attaching nut of helical spring and is locked by locked screw, Second attaching nut of the upper rotation pipe and the bolt of the helical spring are correspondingly connected with and are locked by locked screw.

Further, the rigid support face with arc on the madial wall of the upper rotation pipe, in the rigid support face Supporting role under and the elastic reaction of helical spring under, the optical patchcord is curved when by pulling force on outlet direction Diameter allows radius bend not less than it by half.

Further, the outer cover of the upper rotation pipe is equipped with curved formula sheath.

Further, the madial wall of the open end of the shell radially coordinating with the limit base in optical patchcord.

Compared with the existing technology, the beneficial effects of the utility model are：It is base that the cable of the utility model, which connects function, It is realized in the certain elasticity of flexure of helical spring and intensity, it can be reached within the scope of elastic force from one end of backspin tube The other end, while the vertical bending of upper rotation pipe is downward, the rigid support face with arc on the madial wall of upper rotation pipe, and Under the supporting role of the supporting surface and under the elastic acting force of helical spring, optical fiber cable is when by pulling force on outlet direction Crooked process radius not less than its allow radius bend, therefore, when in use, the outlet side of the export direction and optical fiber cable of guide hole To identical, to prevent, the problem of fairlead cuts optical cable occurs and optical cable is occurred by bad problem is rolled over.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model.

Specific implementation mode

Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.

Referring to Fig. 1, the lead pulling eye optical patchcord of the utility model, including connector 1 and optical patchcord 2, the company It includes the light contact 12 for being equipped with the shell 11 of one end open and being assemblied in shell 11 to connect device 1, and the open end of shell 11 is solid Surely be equipped with limit base 13 and optical fibre conduit 14, the madial wall of the open end of shell 11 optical patchcord 2 radially with limit Position seat 13 coordinates, and optical fibre conduit 14 has fairlead, and light contact 12 connects optical patchcord 2, after optical patchcord 2 passes through fairlead Outlet, the optical fibre conduit 14 include upper rotation pipe 141, helical spring 142 and backspin tube 143, and upper rotation pipe 141 is vertical Bending passes down through helical spring 142 and connects backspin tube 143, and backspin tube 141 bends downward and makes the outlet of fairlead Towards the outlet direction of optical patchcord 2, the junction both ends of helical spring 142 are respectively equipped with is welded as one with helical spring 142 The junction of first attaching nut 3 of body connection and bolt 4, upper rotation pipe 141 and helical spring 142 is equipped with the second attaching nut 5, the first attaching nut 3 and the second attaching nut 5 are equipped with locked screw hole, lock in screw hole equipped with locked screw 6, backspin tube 143 upper end is threaded into the first attaching nut 3 of helical spring 142 and is locked by locked screw 6, upper rotation pipe 141 The bolt 4 of second attaching nut 5 and helical spring 142 is correspondingly connected with and is locked by locked screw 6.

The cable of the utility model, which connects function, to be realized based on the certain elasticity of flexure of helical spring 142 and intensity , it can reach the other end within the scope of elastic force from one end of backspin tube 143.

In the present embodiment, the rigid support face 7 with arc on the madial wall of upper rotation pipe 141, in the rigid support Under the supporting role in face 7 and under the elastic reaction of helical spring 142, optical patchcord 2 is when by pulling force on outlet direction Crooked process radius not less than its allow radius bend.The outer cover of upper rotation pipe 141 is equipped with curved formula sheath 8.Curved formula sheath 8 is used for Pipe 141 is rotated in protection.When by the pulling force of optical fiber outlet direction, the bending part of optical fiber is produced in the rigid support face 7 Raw support force simultaneously limits crooked process radius of the optical patchcord 2 at this, while the outlet direction of the outlet of fairlead and optical patchcord 2 Identical the problem of also avoiding fairlead cutting cable line, occurs.

The above is only the preferred embodiments of the present utility model only, is not intended to limit the utility model, all in this practicality All any modification, equivalent and improvement etc., should be included in the guarantor of the utility model made by within novel spirit and principle Within the scope of shield.

Claims (4)

1. a kind of lead pulling eye optical patchcord, it is characterised in that：Including connector and optical patchcord, the connector includes being equipped with The light contact of the shell of one end open and assembly in the housing, the open end fixing assembling of the shell have limit base and There is fairlead, the smooth contact to be connected with the optical patchcord for optical fibre conduit, the optical fibre conduit, and the optical patchcord is worn Outlet after the fairlead is crossed, the optical fibre conduit includes upper rotation pipe, helical spring and backspin tube, and the upper rotation is managed Vertical bending passes down through the helical spring connection backspin tube, and the backspin tube bending is downward and so that fairlead goes out Towards the outlet direction of optical patchcord, the junction both ends of the helical spring are respectively equipped with to be welded as a whole mouth with helical spring The junction of first attaching nut of connection and bolt, the upper rotation pipe and helical spring is equipped with the second attaching nut, described First attaching nut and the second attaching nut are equipped with locked screw hole, and locked screw, the backspin are housed in the locked screw hole The upper end of tube is threaded into the first attaching nut of helical spring and is locked by locked screw, and the second of the upper rotation pipe The bolt of attaching nut and the helical spring is correspondingly connected with and is locked by locked screw.

2. lead pulling eye optical patchcord according to claim 1, it is characterised in that：Have on the madial wall of the upper rotation pipe The rigid support face for having arc, it is described under the supporting role in the rigid support face and under the elastic reaction of helical spring Crooked process radius of optical patchcord when by pulling force on outlet direction allows radius bend not less than its.

3. lead pulling eye optical patchcord according to claim 2, it is characterised in that：The outer cover of the upper rotation pipe is equipped with Curved formula sheath.

4. lead pulling eye optical patchcord according to claim 1, it is characterised in that：The madial wall of the open end of the shell In radially coordinating with the limit base for optical patchcord.