CN203941312U

CN203941312U - A kind of joints of optical fibre positioning fixture

Info

Publication number: CN203941312U
Application number: CN201420213460.8U
Authority: CN
Inventors: 汪凯巍; 陈波波
Original assignee: WEKON TECHNOLOGY Co Ltd
Current assignee: WEKON TECHNOLOGY Co Ltd
Priority date: 2014-04-29
Filing date: 2014-04-29
Publication date: 2014-11-12
Anticipated expiration: 2024-04-29

Abstract

The utility model discloses a kind of joints of optical fibre positioning fixture, formed by fixture, depression bar, acting clamping wrench and rotating nut; On fixture, have V-structure, V-structure bottom is integrally formed optical fiber Inserting Tube, and optical fiber Inserting Tube top and V-structure junction have and be pressed into groove; One end of depression bar is fixed on fixture, in the middle of the bottom of depression bar, has the end of being pressed into, and is pressed into end and is extend into and be pressed into groove by V-structure, and be pressed between groove and optical fiber Inserting Tube and have gap; The helicitic texture of rotating nut screws in the screw on fixture and withstands the other end of depression bar, and gear structure engages with the plum blossom screw on acting clamping wrench.This joints of optical fibre positioning fixture can reduce friction area, has ensured measuring accuracy, has also extended greatly the life-span of positioning fixture.

Description

A kind of joints of optical fibre positioning fixture

Technical field

The utility model belongs to mechanical positioning field, relates in particular to a kind of joints of optical fibre positioning fixture.

Background technology

The joints of optical fibre are jumper of optical fiber cloth wired link, generally be used between optical transmitter and receiver and termination box, its end face pattern is also that 3D parameter is to weigh the important indicator of joints of optical fibre effectiveness, and International Electrotechnical Commission (IEC) has formulated corresponding parameter and standard to it for this reason.Fiber end face interferometer is exactly that the unique appointment of IEC is used for a kind of exact instrument of detection fiber connector three-dimensional appearance.By the measurement of fiber end face interferometer, we can record the 3D parameter of the joints of optical fibre, comprise radius-of-curvature, apex offset and optical fiber height, and for APC connector, we can also obtain its APC angle and key degree error parameter.Because the lateral resolution of this equipment is in micron dimension, longitudinal frame, in nanometer scale, obtains correct and stable result so want test, just need to make connector locate the precision that also can reach micron dimension.

At present, localization method both domestic and external generally adopts V-type groove localization method, and corresponding location structure is fixture.The V-type mouth of this fixture separates up and down, and depression bar and stationary fixture are rigidly connected.In actual measurement, along with measuring increase and the wearing and tearing of ceramic insertion core to V-type groove of number of times, V-type groove can modification open.Under these circumstances, just there is slight change in the position of the compacted joints of optical fibre, and then affect positioning precision and finally have influence on measuring accuracy.The modification and the wearing and tearing that how to prevent V-type groove are the necessary conditions that embody measuring accuracy, are also the matters of utmost importance that client is concerned about.

Summary of the invention

The purpose of this utility model is for the deficiencies in the prior art, and a kind of joints of optical fibre positioning fixture is provided.

The purpose of this utility model is achieved through the following technical solutions: a kind of joints of optical fibre positioning fixture, is made up of fixture, depression bar, acting clamping wrench and rotating nut; On described fixture, have V-structure, V-structure bottom is integrally formed optical fiber Inserting Tube, and optical fiber Inserting Tube top and V-structure junction have and be pressed into groove; One end of depression bar is fixed on fixture, in the middle of the bottom of depression bar, has the end of being pressed into, and is pressed into end and is extend into and be pressed into groove by V-structure, and be pressed between groove and optical fiber Inserting Tube and have gap; Rotating nut bottom is helicitic texture, and top is gear structure, and helicitic texture screws in the screw on fixture and withstands the other end of depression bar, and gear structure engages with the plum blossom screw on acting clamping wrench.

The beneficial effects of the utility model are: 1. optical fiber Inserting Tube has the effect of pre-determined bit, ensure optical fiber horizontal direction insertion vertically positioning fixture; 2. in the time that the joints of optical fibre can not ensure the positioning precision of positioning fixture to the wearing and tearing of fixture, take off acting clamping wrench, twist clockwise rotating nut, make the gear structure tooth pitch that advances, put acting clamping wrench locking, positioning precision has been got back to again original state again; 3. on the basis of traditional V-type groove structure, reserve gap being pressed between end and optical fiber Inserting Tube, effectively reduce the friction to ceramic insertion core of optical fibre connector part, protect ceramic insertion core side surface.In a word, this joints of optical fibre positioning fixture has ensured measuring accuracy, has also extended greatly the life-span of positioning fixture.

Brief description of the drawings

Fig. 1 is the structural representation of joints of optical fibre positioning fixture;

Fig. 2 is the structural representation of fixture;

Fig. 3 is the structural representation of optical fiber Inserting Tube;

Fig. 4 is the structural representation of depression bar;

Fig. 5 is pressed into end to stretch into the structural representation that is pressed into groove;

Fig. 6 is the structural representation of rotating nut;

Fig. 7 is the structural representation of acting clamping wrench;

In figure, fixture 1, depression bar 2, acting clamping wrench 3, rotating nut 4, hexagon socket head cap screw 5, V-structure 11, optical fiber Inserting Tube 12, is pressed into groove 13, is pressed into end 21, plum blossom screw 31, helicitic texture 41, gear structure 42.

Embodiment

Below in conjunction with accompanying drawing 1-7 and embodiment, the utility model is described in further detail.

embodiment 1

As shown in Figure 1, a kind of joints of optical fibre positioning fixture, by fixture 1, depression bar 2, acting clamping wrench 3, rotating nut 4 forms.

As shown in Figures 2 and 3, have V-structure 11 on fixture 1, V-structure 11 bottoms are integrally formed optical fiber Inserting Tube 12, and optical fiber Inserting Tube 12 has the effect of pre-determined bit, ensure optical fiber horizontal direction insertion vertically positioning fixture; The top of optical fiber Inserting Tube 12 and V-structure 11 junctions have and are pressed into groove 13.

As shown in figs. 1 and 4, one end of depression bar 2 is fixed on fixture 1 by two hexagon socket head cap screws 5, has one and be pressed into end 21 in the middle of the bottom of depression bar 2.

As shown in Figure 5, being pressed into end 21 is extend into and is pressed into groove 13 by V-structure 11; Be pressed between groove 13 and optical fiber Inserting Tube 12 and have gap, can reduce the wearing and tearing to ceramic insertion core side surface, as shown in Figure 6, rotating nut 4 bottoms are helicitic texture 41, top is gear structure 42, helicitic texture 41 screws in the screw on fixture 1 and withstands the other end of depression bar 2, and gear structure 42 engages with the plum blossom screw 31 on acting clamping wrench 3.

The course of work of the present utility model is as follows: when user inserts optical fiber after the joints of optical fibre, acting clamping wrench 3 turns clockwise, driven rotary nut 4 sinks and produces a downward acting force and acts on depression bar 2, now be pressed into end 21 fixed fiber tightly in optical fiber Inserting Tube 12, realize accurately location.In the time that the wearing and tearing of the joints of optical fibre can not ensure positioning precision, take off acting clamping wrench 3, twist clockwise rotating nut 4, make gear structure 42 tooth pitch that advances, then put acting clamping wrench locking, at this moment positioning precision has been got back to again original state.

Claims

1. a joints of optical fibre positioning fixture, is characterized in that, it is made up of fixture (1), depression bar (2), acting clamping wrench (3) and rotating nut (4); On described fixture (1), have V-structure (11), V-structure (11) bottom is integrally formed optical fiber Inserting Tube (12), and optical fiber Inserting Tube (12) top and V-structure (11) junction have and be pressed into groove (13); It is upper that one end of depression bar (2) is fixed on fixture (1), in the middle of the bottom of depression bar (2), has and be pressed into end (21), is pressed into end (21) and extend into and be pressed into groove (13) by V-structure (11); Rotating nut (4) bottom is helicitic texture (41), top is gear structure (42), helicitic texture (41) screws in the screw on fixture (1) and withstands the other end of depression bar (2), and gear structure (42) engages with the plum blossom screw (31) on acting clamping wrench (3).