Electric fiber clamping mechanism and optical fiber detection terminal

Abstract

The utility model relates to the technical field of optical fiber operation and maintenance, specifically relates to electric fiber clamping mechanism and optical fiber detection terminal, the utility model aims at solving the problem of alignment between optical fiber bending section and optical sensor sensing end. Electric fiber clamping mechanism includes: first seat body has the first clamping face that is plane, is equipped with two optical sensors, second seat body is connected with first seat body swing, has with the second clamping face of first clamping face opposite setting, second clamping face is cambered surface, the top of cambered surface corresponds with the area between two sensing ends, and second seat body can slide relative to first seat body, first clamping piece is respectively established in the both sides of first clamping face, and first clamping piece swing connects first clamping part, second clamping piece is respectively established in the both sides of second clamping face, and second clamping piece with first clamping piece one to one corresponds, and second clamping piece rotatable connection second clamping part, drive assembly is used for driving first clamping piece.

Description

Technical Field

[0001] This utility model relates to the field of fiber optic operation and maintenance technology, and more specifically, to an electric fiber clamping mechanism and a fiber optic testing terminal. Background Technology

[0002] In the daily maintenance of optical fibers, optical fiber testing terminals are needed. These terminals use fiber clamping devices to bend the optical fibers and work with optical sensors to detect the optical signals in the fibers in order to determine the fiber routing, fiber faults, etc.

[0003] During fiber optic maintenance, the sensing end of the optical sensor is required to align with both sides of the inflection point of the fiber bend to detect optical signals in different propagation directions. However, due to factors such as clamping the fiber, blocking light, and ensuring the secure installation of the optical sensor, the depth of the fiber clamping channel is obviously greater than the diameter of the fiber under test and the height of the sensing end of the optical sensor. This makes it difficult to align the fiber bend with the sensing end of the optical sensor, affecting the accuracy of fiber optic detection. Utility Model Content

[0004] This utility model aims to overcome at least one of the defects of the prior art and provides an electric fiber clamping mechanism and fiber optic detection terminal, which aims to solve the problem of difficult alignment between the bent section of the fiber optic cable and the sensing end of the optical sensor.

[0005] One of the objectives of this utility model is to provide an electric fiber clamping mechanism, comprising: The first housing includes a first fiber clamping part, the first fiber clamping part has a first clamping surface, the first clamping surface is a plane, and the first fiber clamping part is equipped with a pair of optical sensors with sensing ends, the sensing ends of which are exposed on the first clamping surface. The second seat is movably connected to the first seat. The second seat includes a second fiber clamping part, which has a second clamping surface disposed opposite to the first clamping surface. The second clamping surface is an arc surface protruding toward the first clamping surface. A fiber clamping channel for the optical fiber to be tested to pass through is formed between the first clamping surface and the second clamping surface. The two sensing ends are arranged one after the other along the length direction of the fiber clamping channel. The top of the arc surface corresponds to the area between the two sensing ends. The second seat can slide relative to the first seat so that the second clamping surface moves closer to or away from the first clamping surface. A pair of first clamping members are respectively disposed on both sides of the first clamping surface, and the end of the first clamping member near the first clamping surface is movably connected to the first fiber clamping part; A pair of second clamping members are respectively disposed on both sides of the second clamping surface. The second clamping members correspond one-to-one with the first clamping members. The end of the second clamping member near the second clamping surface is rotatably connected to the second fiber clamping part, and the end of the second clamping member away from the first clamping surface is elastically connected to the second base body. A driving component is disposed on the first base body. The driving component is connected to the end of the first clamping member away from the first clamping surface. The driving component is used to drive the first clamping member and is configured such that when the second clamping surface is close to the first clamping surface and jointly clamps the optical fiber under test, the first clamping member drives the second clamping member and jointly swings relative to the first clamping surface to make the optical fiber under test form a bent section or reciprocate bending.

[0006] This solution provides a normally open electric fiber clamping mechanism. During testing, the optical fiber is clamped by a first clamping surface and a second clamping surface. The optical fiber is then actively bent by a drive assembly, a first clamping component, and a second clamping component, or by the drive assembly driving the second clamping component to swing back and forth. This enables dynamic bending of the optical fiber at a preset frequency, improving optical fiber diagnostic capabilities and maintenance efficiency. In this solution, the first clamping surface of the optical sensor is set to be flat, and the corresponding second clamping surface is arc-shaped. On the one hand, the arc apex can bring the optical fiber under test closer to the gap area between the optical sensors, so that the optical fiber is stably limited. On the other hand, when the first clamping component drives the second clamping component and swings the optical fiber together, the optical fiber under test forms a reliable bending segment through the arc surface, and it can be ensured that the bending segment forms a corner only at the corresponding arc apex. Thus, by aligning the arc apex with the gap area between the two sensing ends, it can be ensured that the two sensors are aligned with the optical fiber segment located on one side of the inflection point, so that the optical fiber detection results are accurate.

[0007] In some embodiments, the electric fiber clamping mechanism further includes a support member disposed between the first clamping surface and the second clamping surface, the support member being used to support the fiber under test so that a portion of the fiber located in the fiber clamping channel corresponds to the sensing end.

[0008] This solution prevents the optical fiber located in the fiber clamping channel from slipping down and ensures that it always corresponds to the sensing end, thereby improving detection accuracy.

[0009] In some embodiments, the first clamping surface has a connecting portion located below the sensing end or in the interval region between the sensing ends, and the second clamping surface has a conductive cavity corresponding to the connecting portion. A first end of the supporting member is fixed to the connecting portion, and a second end of the supporting member extends into the conductive cavity. When the second clamping surface reciprocates near or away from the first clamping surface, the second end of the supporting member can reciprocate within the conductive cavity; or The first clamping surface has a conductive cavity located below the sensing end or in the interval area between the sensing ends. The second clamping surface has a connecting part corresponding to the conductive cavity. The first end of the supporting component is fixedly disposed in the connecting part, and the second end of the supporting component extends into the conductive cavity. When the second clamping surface moves closer to or further away from the first clamping surface, the second end of the supporting component can move back and forth in the conductive cavity.

[0010] In this solution, the conductive cavity can accommodate and hide the supporting component, preventing the supporting component from interfering with the reciprocating motion between the second clamping surface and the first clamping surface. It can also ensure that the supporting component always covers the distance between the first clamping surface and the second clamping surface, thereby providing reliable support for the optical fiber located in the fiber clamping channel, so that the optical fiber can always be aligned with the sensing section of the optical sensor.

[0011] In some embodiments, the connecting portion is a connecting hole formed in the first clamping surface, and the first end of the supporting member extends into the connecting hole for fixation.

[0012] This solution can improve the connection strength at the first end of the supporting component to ensure reliable support for the optical fiber.

[0013] In some embodiments, the first seat body is provided with a guide shaft extending toward the second seat body, and the second seat body is provided with a guide hole that mates with the guide shaft, the guide hole passing through the guide shaft; or, The second seat has a guide shaft extending toward the first seat, and the first seat has a guide hole that mates with the guide shaft, the guide hole passing through the guide shaft.

[0014] In some embodiments, the drive assembly includes a telescopic drive member and a pair of transmission arms that correspond one-to-one with a pair of the first clamping members. The telescopic drive member is disposed on the first base and has a telescopic shaft extending toward the first fiber clamping portion. A first end of the transmission arm is hinged to the telescopic shaft, and a second end of the transmission arm is hinged to the end of the first clamping member away from the first clamping surface. The telescopic shaft can reciprocate relative to the first fiber clamping part and drive the first clamping member through the transmission arm so that the first clamping member swings relative to the first clamping surface.

[0015] In some embodiments, the telescopic shaft and the transmission arm are connected by a connector, which includes a fastening part and two first hinge parts. The fastening part is fixedly connected to the telescopic shaft, and the first hinge parts are movably connected to the first end of the corresponding transmission arm via a first rotating shaft.

[0016] In some embodiments, the end of the first clamping member away from the first clamping surface is provided with a second hinge portion, and the second hinge portion is movably connected to the second end of the corresponding transmission arm through a second rotating shaft.

[0017] The second objective of this utility model is to provide an optical fiber detection terminal, including a housing and the electric fiber clamping mechanism, wherein the electric fiber clamping mechanism is disposed inside the housing; The housing has a first surface and a second surface disposed opposite to each other, and a third surface connected to the first surface and the second surface respectively; The opening of the fiber clamping channel is oriented toward the third surface. The third surface has a fiber feeding port that communicates with the opening of the fiber clamping channel. The first surface and the second surface each have a limiting groove that communicates with both the fiber feeding port and the interior of the fiber clamping channel. The extending direction of the limiting groove is parallel to the reciprocating motion direction of the second clamping surface.

[0018] In some embodiments, the support height of the limiting groove is flush with the support surface of the supporting component.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows: by setting the first clamping surface to be a plane and the second clamping surface to be an arc-shaped surface, the optical fiber to be tested can be brought close to the gap area between the optical sensors through the arc apex, so that the optical fiber is stably limited and the optical fiber to be tested forms a reliable bending segment through the arc surface, ensuring that the bending segment only forms a corner at the corresponding arc apex. Thus, the two sensors are each aligned with the optical fiber segment located on one side of the inflection point, so that the optical fiber detection result is accurate. Attached Figure Description

[0020] Figure 1 This is a structural diagram of the electric fiber clamping mechanism in Example 1.

[0021] Figure 2 This is a partial structure of the electric fiber clamping mechanism in Example 1. Figure 1 .

[0022] Figure 3 This is a partial structure of the electric fiber clamping mechanism in Example 1. Figure 2 .

[0023] Figure 4 This is a structural diagram of the drive component 400 in Embodiment 1.

[0024] Figure 5 This is a structural diagram of the fiber optic detection terminal in Example 2.

[0025] Reference numerals: First base 100, first fiber clamping part 110, first clamping surface 111, connecting part 112, guide shaft 120, first clamping member 130, optical sensor 200, second base 300, second fiber clamping part 310, second clamping surface 311, conducting cavity 312, guide hole 320, second clamping member 330, fiber clamping channel A, driving assembly 400, transmission arm 410, telescopic driving member 420, telescopic shaft 421, connecting member 430, fastening part 431, first hinge part 432, second hinge part 440, supporting member 500, housing 600, first surface 610, second surface (not shown), third surface 620, fiber feeding port B, limiting groove 630. Detailed Implementation

[0026] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this invention. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the actual dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings.

[0027] Example 1 refer to Figure 1-3 This embodiment provides an electric fiber clamping mechanism, including: The first base 100 includes a first fiber clamping part 110. The first fiber clamping part 110 has a first clamping surface 111, which is a plane. The first fiber clamping part 110 is equipped with a pair of optical sensors 200 with sensing ends, and the sensing ends are both exposed on the first clamping surface 111. The second seat 300 is movably connected to the first seat 100. The second seat 300 includes a second fiber clamping part 310. The second fiber clamping part 310 has a second clamping surface 311 disposed opposite to the first clamping surface 111. The second clamping surface 311 is an arc surface protruding towards the first clamping surface 111. A fiber clamping channel A for the optical fiber to be tested to pass through is formed between the first clamping surface 111 and the second clamping surface 311. The two sensing ends are arranged back and forth along the length direction of the fiber clamping channel A. The top of the arc surface corresponds to the area between the two sensing ends. The second seat 300 can slide relative to the first seat 100 so that the second clamping surface 311 moves closer to or away from the first clamping surface 111. A pair of first clamping members 130 are provided on the first base 100. The two first clamping members 130 are respectively provided on both sides of the first clamping surface 111. The end of the first clamping member 130 near the first clamping surface 111 is movably connected to the first fiber clamping part 110. A pair of second clamping members 330 are disposed on the second base 300. The two second clamping members 330 are respectively disposed on both sides of the second clamping surface 311. The second clamping members 330 correspond one-to-one with the first clamping members 130. The end of the second clamping member 330 near the second clamping surface 311 is rotatably connected to the second fiber clamping part 310, and the end of the second clamping member 330 away from the first clamping surface 111 is elastically connected to the second base 300. A drive assembly 400 is disposed on the first base 100. The drive assembly 400 is connected to the end of the first clamping member 130 away from the first clamping surface 111. The drive assembly 400 is used to drive the first clamping member 130 and is configured such that when the second clamping surface 311 approaches the first clamping surface 111 and jointly clamps the optical fiber under test, the first clamping member 130 drives the second clamping member 330 and jointly swings relative to the first clamping surface 111, so that the optical fiber under test forms a bent section or reciprocates.

[0028] In this embodiment, the two sensing ends are spaced apart. This means that when the optical fiber under test forms a bend, the inflection point of the bend corresponds to the area between the two sensing ends. By setting the distance between them, the two sensors can more reliably correspond to the two sides of the inflection point of the bend, ensuring the accuracy of the optical fiber detection results.

[0029] In a specific implementation, the end of the second clamping member 330 away from the first clamping surface 111 is elastically connected to the second seat 300 by a torsion spring with two elastic arms. The main body of the torsion spring is sleeved on the side of the second seat 300 opposite to the second clamping surface 311, and the two elastic arms respectively abut against the end of the second clamping member 330 away from the first clamping surface 111. It can be understood that when no external force is applied to the second clamping member 330, the second clamping member 330 is pushed to both sides of the second clamping part 310 by the elastic arms and is flush with the second clamping surface 311.

[0030] During testing, the optical fiber to be tested is placed in the fiber clamping channel A. The optical fiber is clamped by the first clamping surface 111 and the second clamping surface 311, as well as the first clamping member 130 and the second clamping member 330. Then, through the driving action of the driving component 400, the first clamping member 130 can drive the second clamping member 330 to swing relative to the first clamping surface 111. Thus, the first clamping member 130 and the second clamping member 330 bend the optical fiber together. In addition, by driving the second clamping member 330 to swing back and forth through the driving component 400, a test mode of dynamically bending the optical fiber according to a preset frequency can be realized, thereby improving the optical fiber diagnostic capability and maintenance efficiency. In this embodiment, by setting the first clamping surface 111 of the optical sensor 200 to be a plane and the corresponding second clamping surface 311 to be an arc surface, on the one hand, the optical fiber to be tested can be brought closer to the gap area between the optical sensors 200 through the arc surface, so that the optical fiber is stably limited. On the other hand, when the first clamping member 130 drives the second clamping member 330 and jointly clamps the optical fiber to be tested and swings, the optical fiber to be tested can form a reliable bending segment through the arc surface, and it can be ensured that the bending segment only forms a corner at the corresponding arc apex. Thus, by aligning the top of the arc surface with the gap area between the two sensing ends, it can be ensured that the two optical sensors 200 are each aligned with the optical fiber segment located on one side of the inflection point, so that the optical fiber detection result is accurate.

[0031] refer to Figure 1 The electric fiber clamping mechanism also includes a support member 500 disposed between the first clamping surface 111 and the second clamping surface 311. The support member 500 is used to support the fiber to be tested so that a portion of the fiber located in the fiber clamping channel A corresponds to the sensing end. In this way, the fiber located in the fiber clamping channel A can be prevented from sliding down and can always correspond to the sensing end, thereby improving the detection accuracy.

[0032] refer to Figure 2-3 In some embodiments, the supporting member 500 may be configured as follows: the first clamping surface 111 is provided with a connecting portion 112 located below the sensing end or in the interval area between the sensing ends, the second clamping surface 311 is provided with a conductive cavity 312 corresponding to the connecting portion 112, the first end of the supporting member 500 is fixedly disposed on the connecting portion 112, and the second end of the supporting member 500 extends into the conductive cavity 312. When the second clamping surface 311 moves closer to or further away from the first clamping surface 111, the second end of the supporting member 500 can move back and forth in the conductive cavity 312.

[0033] It is understood that in some other embodiments, the positions of the conducting cavity 312 and the connecting part 112 can be interchanged. Specifically, the first clamping surface 111 has a conducting cavity 312 located on the lower side of the sensing end or in the interval area between the sensing ends, and the second clamping surface 311 has a connecting part 112 corresponding to the conducting cavity 312. The first end of the supporting member 500 is fixedly disposed in the connecting part 112, and the second end of the supporting member 500 extends into the conducting cavity 312. When the second clamping surface 311 moves closer to or further away from the first clamping surface 111, the second end of the supporting member 500 can move back and forth in the conducting cavity 312.

[0034] In other embodiments, the supporting component 500 may be elastically disposed only on the first clamping surface 111 or the second clamping surface 311, for example, in the following configuration: the first clamping surface 111 or the second clamping surface 311 is provided with a mounting cavity, and the supporting component 500 is disposed in the mounting cavity by means of an elastic element. When the fiber clamping channel A is in the normally open state, the elastic element is in a free state, and the supporting component 500 extends from one of the first clamping surface 111 and the second clamping surface 311 to the other, thereby supporting the optical fiber placed in the fiber clamping channel A. When the optical fiber is clamped by the first clamping surface 111 and the second clamping surface 311, the supporting component 500 retracts into the mounting cavity by compressing the elastic element. Thus, the supporting component 500 can adapt to the spacing of the fiber clamping channel A, leaving only a small portion in the fiber clamping channel A that is equivalent to the diameter of the optical fiber. This can reliably support the optical fiber under test and avoid obstructing the approach movement of the first clamping surface 111 and the second clamping surface 311.

[0035] It is understandable that if the distance between the arc apex of the first clamping surface 111 and the second clamping surface 311 when the electric fiber clamping mechanism is in the normally open state is d, and the length of the supporting component 500 extending outward relative to the connecting portion 112 is D, then in order to ensure that the supporting component 500 always covers the distance between the first clamping surface 111 and the second clamping surface 311, D is greater than d. In this embodiment, the conductive cavity 312 can accommodate and hide the supporting component 500, avoiding interference from the supporting component 500 to the reciprocating motion between the second clamping surface 311 and the first clamping surface 111. It can also ensure that the supporting component 500 always covers the distance between the first clamping surface 111 and the second clamping surface 311, thereby providing reliable support for the optical fiber located in the fiber clamping channel A, so that the optical fiber can always be aligned with the sensing segment of the optical sensor 200.

[0036] In this embodiment, the connecting portion 112 is a connecting hole formed in the first clamping surface 111, and the first end of the supporting member 500 extends into the connecting hole for fixation. It can be understood that this fixing method can improve the connection strength between the first end of the supporting member 500 and the first clamping surface 111, thereby ensuring reliable support for the optical fiber.

[0037] In practice, the supporting component 500 can be implemented in the form of a rod, a plate, or other similar shapes.

[0038] refer to Figure 1-2 In this embodiment, the first seat 100 is provided with a guide shaft 120 extending toward the second seat 300, and the second seat 300 is provided with a guide hole 320 that mates with the guide shaft 120. The guide hole 320 passes through the guide shaft 120. It can be understood that in other embodiments, the positions of the guide shaft 120 and the guide hole can be interchanged. Specifically, the second seat 300 is provided with a guide shaft 120 extending toward the first seat 100, and the first seat 100 is provided with a guide hole 320 that mates with the guide shaft 120. The guide hole 320 passes through the guide shaft 120. In specific implementation, in order to improve the reliability of reciprocating sliding, a pair of guide shafts 120 are provided. In this embodiment, the reciprocating sliding of the second seat 300 is achieved through the guide shaft 120 and the guide hole 320, which has the advantages of simple structure and reliable sliding.

[0039] In some embodiments, the position of the first seat 100 is relatively fixed, and the second seat 300 is driven by a reciprocating mechanism, thereby allowing the second seat 300 to slide relative to the first seat 100. This causes the second clamping surface 311 to move closer to or further away from the first clamping surface 111, thus achieving the closure or opening of the fiber clamping channel A. It is understood that in other embodiments, the position of the second seat 300 can also be fixed, while the first seat 100 is driven by a reciprocating mechanism to achieve the closure or opening of the fiber clamping channel A. Specifically, the reciprocating mechanism can be implemented using a manual spring reset mechanism, such as a trigger, or it can be implemented using a lead screw / screw mechanism, a cylinder, a linear motor, etc. Those skilled in the art, based on actual needs, can understand what existing connection method is used between the reciprocating mechanism and the first seat 100 or the second seat 300, and will not be elaborated upon here.

[0040] refer to Figure 4 The drive assembly 400 includes a telescopic drive member 420 and a pair of transmission arms 410 that correspond to and cooperate with a pair of first clamping members 130. The telescopic drive member 420 is disposed on the first base 100 and has a telescopic shaft 421 extending toward the first fiber clamping part 110. The first end of the transmission arm 410 is hinged to the telescopic shaft 421, and the second end of the transmission arm 410 is hinged to the end of the first clamping member 130 away from the first clamping surface 111. The telescopic shaft 421 can reciprocate relative to the first fiber clamping part 110 and drive the first clamping member 130 through the transmission arm 410 so that the first clamping member 130 swings relative to the first clamping surface 111.

[0041] In this embodiment, the telescopic shaft 421 and the transmission arm 410 are connected by a connector 430. The connector 430 includes a fastening part 431 and two first hinge parts 432. The fastening part 431 is fixedly connected to the telescopic shaft 421, and the first hinge parts 432 are movably connected to the first end of the corresponding transmission arm 410 through a first rotating shaft. In addition, in order to ensure reliable transmission of the first clamping member 130, a second hinge part 440 is provided at the end of the first clamping member 130 away from the first clamping surface 111. The second hinge part 440 is movably connected to the second end of the corresponding transmission arm 410 through a second rotating shaft.

[0042] Example 2 refer to Figure 5 This embodiment provides an optical fiber detection terminal, including a housing 600 and the electric fiber clamping mechanism described in Embodiment 1, wherein the electric fiber clamping mechanism is disposed inside the housing 600. The housing 600 has a first surface 610 and a second surface disposed opposite to each other, and a third surface 620 connected to the first surface 610 and the second surface respectively; The opening of the fiber clamping channel A is oriented toward the third surface 620. The third surface 620 has a fiber feeding port B that communicates with the opening of the fiber clamping channel A. The first surface 610 and the second surface respectively have limiting grooves 630 that communicate with both the fiber feeding port B and the interior of the fiber clamping channel A. The extending direction of the limiting grooves 630 is parallel to the reciprocating motion direction of the second clamping surface 311.

[0043] In this embodiment, when the optical fiber is inserted into the fiber clamping channel A through the fiber outlet B, the portion of the optical fiber corresponding to the fiber clamping channel A can be supported by the limiting groove 630 and the supporting component 500. When the first clamping component 130 and the second clamping component 330 drive the portion of the optical fiber to reciprocate and dynamically bend, the limiting groove 630 can limit the optical fiber from both sides to prevent the optical fiber from shifting in the depth direction of the fiber clamping channel A, so that the optical fiber under test always corresponds to the sensing end of the optical sensor 200.

[0044] Continue to refer to Figure 5 In this embodiment, the support height of the limiting groove 630 is flush with the support surface of the supporting component 500. Thus, when the optical fiber to be tested is placed in the fiber clamping channel A, the optical fiber to be tested can be supported by the two limiting grooves 630 and the supporting component 500, keeping it flush with the detection end of the optical sensor 200.

[0045] In practice, the fiber optic testing terminal also includes components such as a main control board, a power supply module, and operation keys. These components are all conventionally used in fiber optic testing terminals, and their layout and connection methods are conventional technical means in this field, so they will not be described in detail here.

[0046] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the technical solution of this utility model, and are not intended to limit the specific implementation of this utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. An electric fiber clamping mechanism, characterized in that, include: The first housing includes a first fiber clamping part, the first fiber clamping part has a first clamping surface, the first clamping surface is a plane, and the first fiber clamping part is equipped with a pair of optical sensors with sensing ends, the sensing ends of which are exposed on the first clamping surface. The second seat is movably connected to the first seat. The second seat includes a second fiber clamping part, which has a second clamping surface opposite to the first clamping surface. The second clamping surface is an arc surface protruding towards the first clamping surface. A fiber clamping channel for the optical fiber to be tested to pass through is formed between the first clamping surface and the second clamping surface. The two sensing ends are arranged one after the other along the length of the fiber clamping channel. The top of the arc surface corresponds to the area between the two sensing ends. The second seat can slide relative to the first seat to make the second clamping surface approach or move away from the first clamping surface. A fiber clamping channel for the optical fiber to be tested to pass through is formed between the first clamping surface and the second clamping surface. A pair of first clamping members are respectively disposed on both sides of the first clamping surface, and the end of the first clamping member near the first clamping surface is movably connected to the first fiber clamping part; A pair of second clamping members are respectively disposed on both sides of the second clamping surface. The second clamping members correspond one-to-one with the first clamping members. The end of the second clamping member near the second clamping surface is rotatably connected to the second fiber clamping part, and the end of the second clamping member away from the first clamping surface is elastically connected to the second base body. A driving component is disposed on the first base body. The driving component is connected to the end of the first clamping member away from the first clamping surface. The driving component is used to drive the first clamping member and is configured such that when the second clamping surface is close to the first clamping surface and jointly clamps the optical fiber under test, the first clamping member drives the second clamping member and jointly swings relative to the first clamping surface to make the optical fiber under test form a bent section or reciprocate bending.

2. The electric fiber clamping mechanism according to claim 1, characterized in that, It also includes a support component disposed between the first clamping surface and the second clamping surface, the support component being used to support the optical fiber under test so that a portion of the optical fiber located in the fiber clamping channel corresponds to the sensing end.

3. The electric fiber clamping mechanism according to claim 2, characterized in that, The first clamping surface has a connecting portion located below the sensing end or in the interval region between the sensing ends. The second clamping surface has a conductive cavity corresponding to the connecting portion. The first end of the supporting member is fixedly disposed in the connecting portion, and the second end of the supporting member extends into the conductive cavity. When the second clamping surface reciprocates near or away from the first clamping surface, the second end of the supporting member can reciprocate within the conductive cavity; or The first clamping surface has a conductive cavity located below the sensing end or in the interval area between the sensing ends. The second clamping surface has a connecting part corresponding to the conductive cavity. The first end of the supporting component is fixedly disposed in the connecting part, and the second end of the supporting component extends into the conductive cavity. When the second clamping surface moves closer to or further away from the first clamping surface, the second end of the supporting component can move back and forth in the conductive cavity.

4. The electric fiber clamping mechanism according to claim 3, characterized in that, The connecting part is a connecting hole opened on the first clamping surface, and the first end of the supporting component extends into the connecting hole for fixation.

5. The electric fiber clamping mechanism according to any one of claims 1-4, characterized in that, The first seat body is provided with a guide shaft extending toward the second seat body, and the second seat body is provided with a guide hole that mates with the guide shaft, the guide hole passing through the guide shaft; or... The second seat has a guide shaft extending toward the first seat, and the first seat has a guide hole that mates with the guide shaft, the guide hole passing through the guide shaft.

6. The electric fiber clamping mechanism according to any one of claims 1-4, characterized in that, The drive assembly includes a telescopic drive member and a pair of transmission arms that correspond to and cooperate with a pair of the first clamping members. The telescopic drive member is disposed on the first base and has a telescopic shaft extending toward the first fiber clamping portion. The first end of the transmission arm is hinged to the telescopic shaft, and the second end of the transmission arm is hinged to the end of the first clamping member away from the first clamping surface. The telescopic shaft can reciprocate relative to the first fiber clamping part and drive the first clamping member through the transmission arm, so that the first clamping member swings relative to the first clamping surface.

7. The electric fiber clamping mechanism according to claim 6, characterized in that, The telescopic shaft and the transmission arm are connected by a connector, which includes a fastening part and two first hinge parts. The fastening part is fixedly connected to the telescopic shaft, and the first hinge parts are movably connected to the first end of the corresponding transmission arm through a first rotating shaft.

8. The electric fiber clamping mechanism according to claim 7, characterized in that, Each of the first clamping members has a second hinge portion at the end away from the first clamping surface. The second hinge portion is movably connected to the second end of the corresponding transmission arm via a second rotating shaft.

9. A fiber optic detection terminal, characterized in that, It includes a housing and an electric fiber clamping mechanism as described in any one of claims 1-8, wherein the electric fiber clamping mechanism is disposed inside the housing; The housing has a first surface and a second surface disposed opposite to each other, and a third surface connected to the first surface and the second surface respectively; The opening of the fiber clamping channel is oriented toward the third surface. The third surface has a fiber feeding port that communicates with the opening of the fiber clamping channel. The first surface and the second surface each have a limiting groove that communicates with both the fiber feeding port and the interior of the fiber clamping channel. The extending direction of the limiting groove is parallel to the reciprocating motion direction of the second clamping surface.

10. The fiber optic detection terminal according to claim 9, characterized in that, The support height of the limiting groove is flush with the support surface of the supporting component.

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