CN201355397Y

CN201355397Y - Improved structure for positioning seat of optical fiber positioning device

Info

Publication number: CN201355397Y
Application number: CNU2009201430196U
Authority: CN
Inventors: 杨友联
Original assignee: NANJING JILONG OPTICAL COMMUNICATION CO Ltd
Current assignee: Nanjing Jilong Optical Communication Co., Ltd.
Priority date: 2009-02-12
Filing date: 2009-02-12
Publication date: 2009-12-02
Anticipated expiration: 2019-02-12

Abstract

The utility model relates to an improved structure for a positioning seat of an optical fiber positioning device, which comprises a first groove, a second groove and a third groove which extend transversely, wherein the three grooves are formed on a first surface, a second surface and a third surface of the positioning seat, respectively; the second surface is higher than the first surface and is close to the first surface transversely; the third surface is positioned on the other transversal side of the first surface far from the second surface; the third surface is higher than the first surface and is close to the first surface transversely; and a longitudinal recess is formed between the second groove and the third groove, so that optical fiber is supported in the axial direction of the three grooves. When the optical fiber is supported inside the three grooves, crest lines of the optical fiber protrude from the first groove to the upper part of the first surface of the positioning seat, and are accommodated inside the second groove and the third groove below the second surface and the third surface; the first surface is in the shape of a downwardly concaved circular arc or a roughly plane; the second groove and the third groove are positioned on the two transversal sides of the first groove in a symmetric or asymmetrical manner; and the cross sections of the three grooves are v-shaped or trapezoidal. After the improved structure is adopted, the positioning and the guiding precision of the optical fiber are higher, so that the optical fiber can be welded smoothly, and the performance figures of the optical fiber welding are higher.

Description

Fiber orientation device positioning seat improves structure

Technical field

The utility model relates to a kind of fiber orientation device positioning seat and improves structure.

Background technology

At present, optical fiber splicer comprises fiber orientation device and fusion splicing devices.The fiber orientation device can position and leads optical fiber, so that successfully implement fused fiber splice, and obtains higher fused fiber splice performance index.

Fiber orientation device of a great variety, structure is also different, and wherein, publication number is that the Chinese invention patent ublic specification of application of CN 1530675A discloses a kind of " optical fiber fixing system, fiber alignment system and fused fiber splice system ".

A kind of stationary body (being commonly called as positioning seat), a kind of main body (being commonly called as pressure head) that presses down have been disclosed respectively in the above-mentioned optical fiber fixing system (being commonly called as the fiber orientation device) that is used for fixing optical fiber.

Stationary body comprises first groove and second groove that all extends at first direction, two grooves are respectively formed on the first surface and second surface of this main body, thereby axial support optical fiber along two grooves, it is above and laterally close that second surface is positioned at first surface, to form staircase structure, two surfaces roughly are the planes, the xsect of first groove and second groove is a V-arrangement or trapezoidal, when when first direction is measured, first groove is shorter than second groove, when fiber support was in two grooves, the crestal line of this optical fiber was projected into more than the first surface of stationary body from first groove, and was contained in the second following groove of the second surface of stationary body;

Press down main body and comprise projection, this projection is formed on the first surface of this main body, and is approximately perpendicular to first groove and extends, and first surface roughly is the plane, presses down the first surface of the first surface of main body towards stationary body;

At least one of them can move towards another stationary body with pressing down main body, thereby by optical fiber being pressed onto the projection in first groove, optical fiber can be fixed between the two.

There is following defective in above-mentioned stationary body:

Because first groove is more shallow than the weak point and the degree of depth along the first direction length measured in the stationary body, therefore, when placing optical fiber, optical fiber is difficult for putting into first groove, and then, press down main body and can't reliablely and stablely push down optical fiber, make optical fiber fixing system lose the effect of location and guiding, so that can't successfully implement fused fiber splice, the performance index of fused fiber splice are lower.

The utility model content

The technical problems to be solved in the utility model provides a kind of fiber orientation device positioning seat and improves structure, adopt this improvements structure after, the location and the guiding accuracy of optical fiber are higher, consequently can successfully implement fused fiber splice, the performance index of fused fiber splice are higher.

For solving the problems of the technologies described above, the utility model fiber orientation device positioning seat improves first groove that structure comprises horizontal expansion, second groove and three-flute, three-flute is respectively formed at the first surface of positioning seat, on second surface and the 3rd surface, second surface is higher than first surface and laterally close, the 3rd surface is positioned at the horizontal opposite side of first surface away from second surface, the 3rd surface is higher than first surface and laterally close, and second groove, form vertically recessed between the three-flute, thereby axial support optical fiber along three-flute, when fiber support is in three-flute, the crestal line of this optical fiber is projected into more than the first surface of positioning seat from first groove, and is contained in the second surface of positioning seat and second groove and three-flute below the 3rd surface.

Compare with existing positioning seat, this fiber orientation device positioning seat improves structure and has set up three-flute and formed vertically recessed thus, so that passive three slot lengths are prolonged, like this, can be along first groove, second groove, the axial support optical fiber of three-flute, and make optical fiber easily put into first groove, and then, the pressure head in the fiber orientation device can put in vertically recessed in, reliablely and stablely push down optical fiber, make the effect of fiber orientation device performance location and guiding, therefore, adopt above-mentioned structure after, the location and the guiding accuracy of optical fiber are higher, so that can successfully implement fused fiber splice, the performance index of fused fiber splice are higher.

For can concise description for the purpose of the problem, below this fiber orientation device positioning seat is improved structure all abbreviate this improvement structure as.

As improvement of the present utility model, it is recessed circular-arc or roughly be the plane that described first surface is.

As improvement of the present utility model, described second groove, three-flute are positioned at the both lateral sides of first groove with symmetry or asymmetric manner.

The xsect of described three-flute is a V-arrangement or trapezoidal.

Description of drawings

Fig. 1 is the structure and the user mode stereographic map of the utility model first embodiment;

Fig. 2 is the structure and the user mode stereographic map of the utility model second embodiment;

Fig. 3 is the structure and the user mode stereographic map of the utility model the 3rd embodiment.

Embodiment

Below in conjunction with accompanying drawing three embodiments of the present utility model are specifically described:

First embodiment

Referring to Fig. 1, this improvement structure comprises first groove 1, second groove 2 and the three-flute 3 of horizontal expansion, and three-flute is respectively formed on first surface 4, second surface 5 and the 3rd surface 6 of positioning seat.

It is recessed circular-arc that first surface 4 is, and second surface 5 and the 3rd surface 6 roughly are the planes; Second surface 5 is higher than first surface 4 and laterally close, and the 3rd surface 6 is positioned at the horizontal opposite side of first surface 4 away from second surface 5, and the 3rd surface 6 is higher than first surface 4 and laterally close; First surface 4 respectively with second surface 5 and the 3rd surface 6 between the

excessive face

7 and 8 that is connected be roughly arc surface.

Second groove 2, three-flute 3 are positioned at the both lateral sides of first groove 1 with symmetric mode, and the xsect of three-flute is a V-arrangement, and form between second groove 2, three-flute 3 vertically recessed 9, thereby along the axial support optical fiber A of three-flute.

When optical fiber A was supported in the three-flute, the crestal line of optical fiber A is projected into positioning seat from first groove 1 first surface was more than 4, and was contained in the second surface 5 and the 3rd second groove 2 and three-flute 3 of surface below 6 of positioning seat.

This improvement structure and be positioned at its top pressure head B formed the fiber orientation device that is used for fixing optical fiber A.Pressure head B can put in vertical recessed 9, reliablely and stablely pushes down optical fiber A, makes the effect of fiber orientation device performance location and guiding.

Second embodiment

Referring to Fig. 2, the first surface 4 of this improvement structure roughly is the plane, first surface 4 respectively with second surface 5 and the 3rd surface 6 between be connected

excessive face

7 and 8 for vertical plane, and other structure is identical with first embodiment, repeats no more here.

The 3rd embodiment

Referring to Fig. 3, second groove 2 of this improvement structure, three-flute 3 are positioned at the both lateral sides of first groove 1 with asymmetric manner, and other structure is identical with first embodiment, repeats no more here.

This improvement structure and be positioned at its top pressure head B formed the fiber orientation device that is used for fixing optical fiber A.Pressure head B is made of left briquetting B 1, right briquetting B2 two parts, left side briquetting B1 puts in vertical recessed 9, and right briquetting B2 puts in second groove 2, like this, left side briquetting B1, right briquetting B2 all can reliablely and stablely push down optical fiber A, make the effect of fiber orientation device performance location and guiding.

Above-described only is preferred implementation of the present utility model.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model principle, can also make some modification and improvement, these also should be considered as belonging to protection domain of the present utility model.

Claims

1, fiber orientation device positioning seat improves structure, first groove and second groove that comprise horizontal expansion, two grooves are respectively formed on the first surface and second surface of positioning seat, second surface is higher than first surface and laterally close, it is characterized in that: the three-flute that also comprises horizontal expansion, this groove is formed on the 3rd surface of positioning seat, the 3rd surface is positioned at the horizontal opposite side of first surface away from second surface, the 3rd surface is higher than first surface and laterally close, and second groove, form vertically recessed between the three-flute, thereby axial support optical fiber along three-flute, when fiber support is in three-flute, the crestal line of this optical fiber is projected into more than the first surface of positioning seat from first groove, and is contained in the second surface of positioning seat and second groove and three-flute below the 3rd surface.

2, fiber orientation device positioning seat according to claim 1 improves structure, it is characterized in that: first surface is recessed circular-arc or roughly be the plane.

3, fiber orientation device positioning seat according to claim 1 and 2 improves structure, and it is characterized in that: second groove, three-flute are positioned at the both lateral sides of first groove with symmetry or asymmetric manner.

4, fiber orientation device positioning seat according to claim 1 and 2 improves structure, and it is characterized in that: the xsect of three-flute is a V-arrangement or trapezoidal.

5, fiber orientation device positioning seat according to claim 3 improves structure, and it is characterized in that: the xsect of three-flute is a V-arrangement or trapezoidal.