OTDR device

Abstract

The utility model discloses an OTDR (Optical Time Domain Reflectometer) device, which solves the technical problems that in the prior art, an optical fiber in an OTDR is coiled on a main board, and the main board and a connecting port are independently arranged, so that one end of the optical fiber is not stably connected with the connecting port, and the optical fiber is easy to bend and damage. Comprising a main shell, an interface assembly and a circuit board are arranged in the main shell, connecting assemblies are arranged on the two sides of the interface assembly, and the interface assembly and the circuit board are detachably connected through the connecting assemblies. Through the detachable connection structure of the interface assembly and the circuit board, the optical fiber connected between the interface assembly and the circuit board can be stably coiled on the circuit board, the stability of the whole equipment is improved, and the service life of the whole equipment is prolonged. The device can be widely applied to the technical field of OTDR devices.

Description

Technical Field

[0001] The utility model relates to the technical field of OTDR devices, in particular to an OTDR device. Background Art

[0002] Optical Time Domain Reflectometer (OTDR) is an instrument used in the telecommunications field to measure the characteristics of optical fibers. OTDR is made using the backscattering of light and the Fresnel reverse principle; through the backscattered light generated when light propagates in the optical fiber, OTDR can obtain the attenuation information of the optical fiber, which can be used to test the loss in the optical fiber, measure the length of the optical fiber, and find the fault breakpoint, etc.

[0003] The OTDR device circuit board is equipped with a laser, which is connected to the test optical fiber through the internal optical fiber and the connector provided on the periphery of the device. The optical fiber is relatively fragile and easily damaged. In the prior art, the internal optical fiber disk of the OTDR is generally arranged on the main board, and the main board and the connector are separated, resulting in an unstable connection between one end of the optical fiber and the connector. If there is shaking during the installation, the optical fiber is prone to bend and damage. Summary of the invention

[0004] The utility model aims at the shortcomings and deficiencies in the prior art and provides an OTDR device. Through the detachable connection structure between the interface component and the circuit board, the optical fiber connected between the interface component and the circuit board can be stably coiled on the circuit board, thereby improving the stability and service life of the overall equipment.

[0005] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] The present application provides an OTDR device, comprising a main housing, wherein an interface component and a circuit board are arranged in the main housing, connection components are arranged on both sides of the interface component, and the interface component and the circuit board are detachably connected through the connection components.

[0007] Furthermore, the connecting component is symmetrically arranged on both sides of the interface component, and includes a vertically arranged card plate and a clamping wall. A protrusion is provided at the end of the card plate, and the clamping wall is arranged above the outer edge of the card plate, and a groove is formed between the clamping wall and the card plate.

[0008] Furthermore, connecting grooves plugged into the grooves are respectively provided on both sides of the top of the circuit board, and connecting holes engaged with the bumps are provided on the circuit board below the connecting grooves.

[0009] Furthermore, the interface component is provided with an optical fiber interface, the circuit board is provided with a laser module, and an optical fiber is connected between the laser module and the optical fiber interface.

[0010] Furthermore, a corner protection assembly is provided on the main shell body, and the corner protection assembly is arranged at the corner of the outer periphery of the main shell body.

[0011] Furthermore, the corner guard assembly includes a guard body and a connecting leg, the guard body is an arc-shaped body matching the corner shape of the main shell, the connecting leg is L-shaped and is arranged at both ends of the guard body, and the guard body and the connecting leg are made of flexible material.

[0012] Furthermore, a mounting groove and a socket are provided at the corner of the main shell corresponding to the corner guard assembly, the connecting foot is inserted through the socket, and the guard is fitted in the mounting groove.

[0013] Furthermore, a protective cover is provided on the main shell outside the interface component, and the protective cover includes a cover body and a connecting arm. The cover body is cap-shaped, and the connecting arm is fixedly connected to the rear side wall of the cover body. The connecting arm can be longitudinally movably connected to the interface component.

[0014] Furthermore, a groove body matching the shape of the protective cover is provided downwardly from the top of the main shell body, the interface assembly is provided at the bottom of the groove body, connecting ribs are provided inwardly around the groove body, and a V-shaped groove is formed at the connection between the connecting ribs and the groove body, and when the protective cover is closed, the edge of the cover body abuts against the connecting ribs.

[0015] Furthermore, limiting grooves are provided on both side walls of the groove body, and limiting strips are provided on both side walls of the cover body. When the protective cover is closed, the limiting strips are fixed in the limiting grooves.

[0016] The utility model has the following beneficial effects:

[0017] The OTDR device of the utility model has an exquisite structural design. The interface component and the circuit board are detachably connected through the connecting component. By connecting and fixing the interface component and the circuit board, the optical fiber connected between the interface component and the circuit board can be stably coiled on the circuit board. Even if the interface component and the circuit board are moved, the optical fiber will not be bent and damaged, thereby improving the stability and service life of the overall equipment. The detachable structure does not require the use of tools during the assembly and disassembly process. When any component needs to be replaced, the connection can be untied. The operation is simple and convenient, and the practicality is strong. At the same time, the fixed connection makes the positioning welding connection point of the optical fiber and the circuit board more accurate, forming a hard link, making the optical fiber and the connection point not easy to break or loosen, protecting the circuit board connection components from damage, and improving the work quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the front view of the OTDR device of the utility model;

[0019] Figure 2It is a structural schematic diagram of the interface component and the circuit board of the OTDR device of the utility model in a state of being separated;

[0020] Figure 3 for Figure 2 A structural diagram of the connection status between the interface component and the circuit board;

[0021] Figure 4 This is a schematic diagram of the structure of the corner protection component of the OTDR device of the utility model;

[0022] Figure 5 for Figure 4 The structural diagram of the enlarged view at A in the middle;

[0023] Figure 6 This is a structural schematic diagram of the OTDR device of the utility model in an open state of the protective cover;

[0024] Figure 7 It is a partial structural schematic diagram of the connection between the protective cover and the main housing of the OTDR device of the utility model.

[0025] In the figure: 1. main shell; 101. mounting slot; 102. jack; 103. slot body; 104. connecting rib; 105. limit slot; 2. interface assembly; 201. clamping wall; 202. card board; 203. bump; 204. groove; 3. circuit board; 301. connecting slot; 302. connecting hole; 4. corner guard assembly; 401. guard body; 402. connecting foot; 5. protective cover; 501. cover body; 502. connecting arm; 503. limit strip; 6. display screen. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0027] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] See also Figure 1-7 , the utility model provides a technical solution:

[0029] The OTDR device needs to be connected to an external optical fiber to measure the characteristics of the optical fiber. The OTDR device is equipped with a laser module and a connector inside, which is connected to the external optical fiber through the connector. The laser module and the connector are connected through the internal optical fiber, and the optical fiber is relatively fragile and easily damaged. In the prior art, the internal optical fiber disk of the OTDR is generally placed on a circuit board with a laser, and the circuit board and the connector are separated, resulting in an unstable connection between one end of the optical fiber and the connector. If shaking occurs during installation, the optical fiber is easily bent and damaged.

[0030] In order to solve the above problems, the utility model provides an OTDR device, including a main housing 1, an interface component 2 and a circuit board 3 are arranged in the main housing 1, and connection components are arranged on both sides of the interface component 2, and the interface component 2 and the circuit board 3 are detachably connected through the connection components. By connecting and fixing the interface component 2 and the circuit board 3, the optical fiber connected between the interface component 2 and the circuit board 3 can be stably coiled on the circuit board, and even if the interface component 2 and the circuit board 3 are moved, the optical fiber will not be bent, and the optical fiber will not be damaged, thereby improving the stability and service life of the overall equipment. At the same time, the fixed connection makes the positioning welding connection point of the optical fiber and the circuit board more accurate, forming a hard link, making the optical fiber and the connection point not easy to break or loose, protecting the circuit board connection components from damage, and improving the work quality.

[0031] Furthermore, if Figure 2-Figure 3 As shown, the connecting component is symmetrically arranged on both sides of the interface component 2, and includes a vertically arranged card plate 202 and a clamping wall 201. A protrusion 203 is provided at the end of the card plate 202, and the clamping wall 201 is arranged above the outer edge of the card plate 202. A groove 204 is formed between the clamping wall 201 and the card plate 202.

[0032] Connecting grooves 301 plugged into the grooves 204 are respectively provided on both sides of the top of the circuit board 3 , and connecting holes 302 engaged with the protrusions 203 are provided on the circuit board 3 below the connecting grooves 301 .

[0033] The interface component 2 and the circuit board 3 are manufactured separately and need to be connected together when assembling the device. The grooves 204 have the function of clamping claws. The grooves 204 at both ends of the interface component 2 are aligned with the connection grooves 301 on both sides of the circuit board 3 for insertion. After the grooves 204 and the connection grooves 301 are connected, the interface component 2 and the circuit board 3 are limited and fixed in the up and down directions. At the same time, the card board 202 is connected to the connection hole of the circuit board 3 through the protrusion 203, and the interface component 2 and the circuit board 3 are limited and fixed in the front and back directions.

[0034] In the present application, the interface component 2 and the circuit board 3 are detachably connected, which is easy to assemble and use. No tools are required during the assembly and disassembly process. When any component needs to be replaced, just untie the connection, which saves time, effort and cost.

[0035] Furthermore, an optical fiber interface is provided on the interface component 2, a laser module is provided on the circuit board 3, and an optical fiber is connected between the laser module and the optical fiber interface. By fixedly connecting the interface component 2 and the circuit board 3, the stability of the optical fiber connected between the laser module and the optical fiber interface is improved.

[0036] like Figure 6 As shown, in the embodiment of the present application, the interface component 2 can be used to connect with an external device, and the OTDR device can also be provided with an optical power module, a red light source module and other functional modules, and their interfaces can be provided on the interface component. The OTDR device is also provided with a display screen 6 to more conveniently and intuitively understand the measurement results of the OTDR device on the optical fiber characteristic data.

[0037] like Figure 4-Figure 5 As shown, the main housing 1 is provided with a corner protection component 4, which is arranged at the corner of the outer periphery of the main housing 1. The OTDR device can be provided with a variety of measurement modules inside, and is a precision instrument. In order to protect the device and its internal electrical components from being damaged by falling or bumping, the corner protection component 4 is provided at the corner of the outer periphery of the main housing 1 to protect the device and buffer the strong force.

[0038] Furthermore, the corner guard assembly 4 includes a guard body 401 and a connecting leg 402. The guard body 401 is an arc-shaped body that matches the corner shape of the main shell. The connecting leg 402 is L-shaped and is arranged at both ends of the guard body 401. The guard body 401 and the connecting leg 402 are made of flexible material.

[0039] A mounting groove 101 and a socket 102 are provided at the corner of the main shell 1 corresponding to the corner guard assembly 4 , the connecting pin 402 is inserted through the socket 102 , and the guard 401 is fitted in the mounting groove 101 .

[0040] In the embodiment of the present application, the guard 401 and the connecting foot 402 are made of rubber material, and the corner guard assembly 4 can be installed or removed from the outside of the main housing 1. During installation, the connecting foot 402 and the socket 102 are interference fit, which improves the stability of the corner guard assembly 4. The corner guard assembly 4 adopts a detachable modular design, which is convenient for replacing the corner guard assembly 4. Users can change the corner guards of different colors or patterns according to their needs to meet the different appearance requirements of users, effectively reducing the mold cost. The arc angle and rubber material of the corner guard assembly 4 improve the buffering performance of the corner guard assembly 4 when it comes into contact with strong forces, have high anti-collision strength, better protect the whole machine from falling and damage, and effectively protect the device.

[0041] like Figure 6-Figure 7 As shown, a protective cover 5 is provided on the main shell 1 outside the interface component 2, and the protective cover 5 includes a cover body 501 and a connecting arm 502. The cover body 501 is in a cap shape, and the rear side wall of the cover body 501 is fixedly connected to the connecting arm 502, and the connecting arm 502 can be longitudinally movably connected to the interface component 2.

[0042] In the embodiment of the present application, the interface assembly 2 is provided with a plurality of connection ports. To prevent water, dust and other debris from entering the interior of the OTDR device and to protect the connection ports from damage, the protective cover 5 can be movably connected to the main housing. When the connection ports need to be used, the cover 501 is pulled upwards. A stopper is provided at the bottom of the connecting arm 502, so that the connecting arm 502 can move up and down within its length range. The material of the connecting arm 502 can be rubber or plastic with a certain degree of flexibility. After the cover 501 is pulled open, it can be automatically bent to the side of the device under the action of gravity, so as to facilitate the connection of the external unit to the interface assembly 2. After use, the cover 501 can be closed.

[0043] A groove 103 matching the shape of the protective cover 5 is provided downwardly at the top of the main housing 1, and the interface assembly 2 is provided at the bottom of the groove 103. Connecting ribs 104 are provided inwardly around the groove 103, and a V-shaped groove is formed at the connection between the connecting ribs 104 and the groove 103. When the protective cover 5 is closed, the edge of the cover 501 abuts against the connecting ribs 104. The connecting ribs 104 support the cover 501, and the V-shaped groove can prevent liquid or impurities entering through the gap of the cover 501 from entering the device.

[0044] Limiting grooves 105 are provided on both side walls of the groove body 103, and limiting strips 503 are provided on both side walls of the cover body 501. When the protective cover 5 is closed, the limiting strips 503 are fixed in the limiting grooves 105 to prevent the protective cover 5 from falling.

[0045] It should be noted that the terms used above are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0046] In the description of the present application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present application; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0047] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of this application.

[0048] The above is only a preferred specific implementation manner of the present invention, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An OTDR device, comprising a main housing (1), characterized in that: An interface component (2) and a circuit board (3) are provided in the main housing (1); connecting components are provided on both sides of the interface component (2); and the interface component (2) and the circuit board (3) are detachably connected via the connecting components.

2. The OTDR device according to claim 1, characterized in that: The connection assembly is symmetrically arranged on both sides of the interface assembly (2), and comprises a vertically arranged card plate (202) and a clamping wall (201), the end of the card plate (202) is provided with a protrusion (203), the clamping wall (201) is arranged above the outer edge of the card plate (202), and a groove (204) is formed between the clamping wall (201) and the card plate (202).

3. The OTDR device according to claim 2, characterized in that: Both sides of the top of the circuit board (3) are respectively provided with connection grooves (301) plugged into the grooves (204), and the circuit board (3) below the connection grooves (301) is provided with connection holes (302) snap-fitted into the bumps (203).

4. The OTDR device according to claim 1, characterized in that: The interface component (2) is provided with an optical fiber interface, the circuit board (3) is provided with a laser module, and an optical fiber is connected between the laser module and the optical fiber interface.

5. The OTDR device according to claim 1, characterized in that: The main shell (1) is provided with a corner protection assembly (4), and the corner protection assembly (4) is arranged at a corner of the outer periphery of the main shell (1).

6. The OTDR device according to claim 5, characterized in that: The corner protection assembly (4) comprises a protection body (401) and a connecting leg (402); the protection body (401) is an arc-shaped body matching the corner shape of the main shell; the connecting leg (402) is L-shaped and is arranged at both ends of the protection body (401); the protection body (401) and the connecting leg (402) are made of flexible material.

7. The OTDR device according to claim 6, characterized in that: The main shell (1) is provided with a mounting groove (101) and a socket (102) at a corner corresponding to the corner protection assembly (4); the connecting foot (402) is inserted through the socket (102); and the protection body (401) is fitted in the mounting groove (101).

8. The OTDR device according to claim 1, characterized in that: A protective cover (5) is provided on the main shell (1) outside the interface component (2), and the protective cover (5) comprises a cover body (501) and a connecting arm (502). The cover body (501) is in the shape of a cap, and the connecting arm (502) is fixedly connected to the rear side wall of the cover body (501), and the connecting arm (502) can be longitudinally movably connected to the interface component (2).

9. The OTDR device according to claim 8, characterized in that: A groove body (103) matching the shape of the protective cover (5) is provided downwardly at the top of the main shell (1); the interface assembly (2) is provided at the bottom of the groove body (103); connecting ribs (104) are provided inwardly around the periphery of the groove body (103); and a V-shaped groove is formed at the connection between the connecting ribs (104) and the groove body (103); when the protective cover (5) is closed, the edge of the cover body (501) abuts against the connecting ribs (104).

10. The OTDR device according to claim 9, characterized in that: Limiting grooves (105) are provided on both side walls of the groove body (103), and limiting strips (503) are provided on both side walls of the cover body (501); when the protective cover (5) is closed, the limiting strips (503) are fixed in the limiting grooves (105).

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