CN211085628U

CN211085628U - OTDR can dismantle optical output head

Info

Publication number: CN211085628U
Application number: CN202020020222.0U
Authority: CN
Inventors: 李响军; 周伟建; 梁业兴; 潘敏充; 汤炽梁
Original assignee: Guangzhou Communications Engineering Co ltd
Current assignee: Guangzhou Communications Engineering Co ltd
Priority date: 2020-01-06
Filing date: 2020-01-06
Publication date: 2020-07-24
Anticipated expiration: 2030-01-06

Abstract

The utility model discloses an OTDR detachable optical output head, which comprises a first moving part, a second moving part, an elastic mechanism, an optical fiber fixing part and an output shell; the first movable part is movably sleeved on the second movable part and buckled with the light source output of the OTDR, the second movable part is fixedly connected with the light source output of the OTDR, the elastic mechanism is in abutting contact with the optical fiber fixing part, and the optical fiber core part is fixed by the optical fiber fixing part; the elastic mechanism is a spring, one end of the spring is pressed against the optical fiber fixing piece, and the other end of the spring is pressed against the cavity groove wall of the output shell; the second movable piece is a thread groove, the thread groove is connected with the thread at the light source output of the OTDR, and the thread at the light source output of the OTDR is abutted against the optical fiber fixing piece. The utility model discloses a OTDR can dismantle optical output head design scientific and reasonable, simple structure convenient to use, second moving part and elastic mechanism make detachable optical fiber butt joint push up always and touch, have also improved the reliability when doing the precision connection, and the test is more accurate, has practiced thrift manufacturing cost.

Description

OTDR can dismantle optical output head

Technical Field

The utility model relates to a large bandwidth fiber equipment technical field, concretely relates to OTDR that simple structure, precision are high can dismantle optical output head.

Background

An optical time-domain reflectometer (OTDR) is an instrument for analyzing a measurement curve to know properties such as uniformity, defects, breakage, and coupling of a connector of an optical fiber. The optical fiber attenuation measuring device is manufactured according to the backward scattering and Fresnel backward principle of light, obtains attenuation information by utilizing the backward scattering light generated when the light propagates in the optical fiber, can be used for measuring the attenuation of the optical fiber, the joint loss, the positioning of an optical fiber fault point, knowing the loss distribution condition of the optical fiber along the length and the like, and is an essential tool in the construction, maintenance and monitoring of the optical cable.

The OTDR optical output head type can be changed at will, and the end face is more convenient to clean. However, for the large-bandwidth OTDR, the test accuracy cannot be guaranteed by frequent replacement, and at present, there is no large-bandwidth OTDR, and an OTDR optical output head applicable to a large bandwidth needs to be designed to be detachable for such a large-bandwidth era as 5 g.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a simple structure, the high OTDR of precision can dismantle the optical output head.

In order to overcome the defects in the prior art, the utility model adopts the following technical scheme:

an OTDR detachable optical output head comprises a first moving part (1), a second moving part (2), an elastic mechanism (3), an optical fiber fixing part (4) and an output shell (5); the first moving part (1) is movably sleeved on the second moving part (2) and buckled with the light source output of the OTDR, the second moving part (2) is fixedly connected with the light source output of the OTDR, the elastic mechanism (3) is in abutting contact with the optical fiber fixing part (4), and the optical fiber core piece (6) is fixed by the optical fiber fixing part (4);

the elastic mechanism (3) is a spring (31), one end of the spring (31) is pressed against the optical fiber fixing piece (4), and the other end of the spring (31) is pressed against the cavity groove wall of the output shell (5);

the second movable piece (2) is a thread groove (21), the thread groove (21) is connected with threads at the light source output end of the OTDR, and the threads at the light source output end of the OTDR are in contact with the optical fiber fixing piece (4).

Furthermore, the first movable part (1) is provided with a first buckle (11) and a second buckle (12), the first buckle (11) is buckled with the optical source output of the OTDR, and the second buckle (12) is buckled with a convex block (51) of the output shell (5).

Further, the optical fiber fixing piece (4) comprises a shading soft pad (41), a metal chuck (42) and a top contact groove (43), wherein the metal chuck (42) is wrapped on the shading soft pad (41), and the top contact groove (43) is located on the shading soft pad (41).

Further, the shading soft pad (41) wraps and fixes the optical fiber core member (6), and the spring (31) is abutted against the abutting groove (43).

Further, a first shading film (52) and a second shading film (53) are arranged on the output shell (5), the first shading film (52) is positioned at the outlet end of the optical fiber core (6), and the second shading film (53) is positioned at the threaded connection position of the threaded groove (21) and the light source output end of the OTDR.

Furthermore, the cross section of the first moving part (1) is in a concave shape, and two ends of the first moving part form buckles and slide on the output shell (5).

The utility model discloses a OTDR can dismantle optical output head design scientific and reasonable, simple structure convenient to use, second moving part and elastic mechanism make detachable optical fiber butt joint push up always and touch, have also improved the reliability when doing the precision connection, and the test is more accurate, has practiced thrift manufacturing cost.

Drawings

In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive exercise according to the drawings:

fig. 1 is a schematic diagram of an embodiment of an OTDR detachable optical output head of the present invention;

in the drawings: 1-a first movable member; 2-a second movable member; 3-an elastic mechanism; 4-an optical fiber fixing member; 5-an output housing; 6-an optical fiber core member; 11-a first buckle; 12-a second buckle; 21-thread groove; 31-a spring; 41-shading soft cushion; 42-metal clip; 43-top contact groove; 51-a bump; 52-first light blocking film; 53-second light-shielding film.

Detailed Description

The present invention will be described in detail with reference to the drawings and specific embodiments, and the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.

Fig. 1 shows that when the OTDR detachable optical output header is connected to an OTDR, an OTDR detachable optical output header includes a first moving part 1, a second moving part 2, an elastic mechanism 3, an optical fiber fixing part 4, and an output housing 5; the first moving part 1 can be movably sleeved on the second moving part 2 and buckled with the light source output of the OTDR, the second moving part 2 is fixedly connected with the light source output of the OTDR, the elastic mechanism 3 is in abutting contact with the optical fiber fixing part 4, and the optical fiber fixing part 4 fixes the optical fiber core piece 6; in practice, the light guide member at the light source output of the OTDR protrudes from the light source output of the OTDR, so as to be convenient for contacting the optical fiber core member 6, and the second moving member 2 and the output housing 5 are integrally formed.

The elastic mechanism 3 is a spring 31, one end of the spring 31 is pressed against the optical fiber fixing piece 4, and the other end of the spring 31 is pressed against the cavity wall of the output shell 5; because the spring 31 pushes against the optical fiber fixing member 4 to push the optical fiber core member 6 against the optical fiber or the laser source at the light source output of the OTDR all the time, there is no intermediate gap, and no light loss due to vibration or the like can be realized.

The second moving part 2 is a thread groove 21, the thread groove 21 is connected with the thread at the light source output of the OTDR, the thread at the light source output of the OTDR is in top contact with the optical fiber fixing part 4, and the precision is improved through the thread connection; it is worth mentioning that the end of the threaded groove 21 of the second movable member 2 is provided with a horn opening to facilitate the threaded connection of the second movable member 2 with the light source output of the OTDR.

In some embodiments, the first moving part 1 is provided with a first latch 11 and a second latch 12, the first latch 11 is fastened to the light source output of the OTDR, and the second latch 12 is fastened to the protrusion 51 of the output housing 5. The cross section of the first moving part 1 is concave, and two ends of the first moving part form buckles and slide on the output shell 5. Specifically, the first moving part 1 is fastened after the second moving part 2 is supplemented, so that the influence of breakage and other light generation at the light source output of the OTDR is prevented, and accurate and high-precision testing is realized.

Specifically, the optical fiber fixing member 4 includes a light shielding soft pad 41, a metal clip 42, and a top contact groove 43, wherein the metal clip 42 is wrapped on the light shielding soft pad 41, and the top contact groove 43 is located on the light shielding soft pad 41. The shading soft cushion 41 is wrapped and fixed on the optical fiber core member 6, and the spring 31 is pressed against the top contact groove 43, so that the optical fiber fixing member 4 can always press against the light source output of the OTDR forwards.

In some embodiments, the output housing 5 is provided with a first opaque film 52 and a second opaque film 53, the first opaque film 52 is located at the exit end of the fiber core 6, and the second opaque film 53 is located at the threaded connection between the threaded groove 21 and the light source output of the OTDR. The first light-shielding film 52 and the second light-shielding film 53 are, as their names suggest, to block the influence of other light.

When the OTDR optical fiber connector is used, the first moving part 1 only needs to be moved backwards, then the second moving part 2 is aligned to the optical source output of the OTDR and screwed, and then the first moving part 1 is clamped with the optical source output of the OTDR.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An OTDR detachable optical output head comprises a first moving part (1), a second moving part (2), an elastic mechanism (3), an optical fiber fixing part (4) and an output shell (5); the method is characterized in that:

the first moving part (1) is movably sleeved on the second moving part (2) and buckled with the light source output of the OTDR, the second moving part (2) is fixedly connected with the light source output of the OTDR, the elastic mechanism (3) is in abutting contact with the optical fiber fixing part (4), and the optical fiber core piece (6) is fixed by the optical fiber fixing part (4);

2. An OTDR removable optical output head according to claim 1, characterised in that:

the first movable piece (1) is provided with a first buckle (11) and a second buckle (12), the first buckle (11) is buckled with the optical source output end of the OTDR, and the second buckle (12) is buckled with a convex block (51) of the output shell (5).

3. An OTDR removable optical output head according to claim 1, characterised in that:

the optical fiber fixing piece (4) comprises a shading soft pad (41), a metal chuck (42) and a top contact groove (43), the metal chuck (42) is wrapped on the shading soft pad (41), and the top contact groove (43) is located on the shading soft pad (41).

4. An OTDR removable optical output head according to claim 3, characterised in that:

the shading soft pad (41) wraps and fixes the optical fiber core member (6), and the spring (31) is propped against the propping groove (43).

5. An OTDR removable optical output head according to claim 4, in which:

and a first shading film (52) and a second shading film (53) are arranged on the output shell (5), the first shading film (52) is positioned at the outlet end of the optical fiber core member (6), and the second shading film (53) is positioned at the threaded connection position of the threaded groove (21) and the light source output of the OTDR.

6. An OTDR removable optical output head according to claim 4, in which:

the cross section of the first moving piece (1) is in a concave shape, and two ends of the first moving piece form buckles and slide on the output shell (5).