A pre-relaxed fiber optic connector, a fixture clamp and a semi-automatic coupling device

Abstract

The utility model provides a kind of pre-relaxation fiber connector, fixed clamp and semi-automatic coupling device.The fixed clamp includes fixed base, baffle and rotating shaft;Fixed base is equipped with mounting hole and several installation grooves, rotating shaft one end passes through mounting hole and is fixed with baffle, both can rotate along mounting hole, when baffle turns to locking position, it at least part covers above installation groove, and is pressed to the metal slider of pre-relaxation fiber connector, to limit its axial movement.The semi-automatic coupling device includes fixed system, butt joint system, driving system, control system and base;Butt joint system contains the fixed clamp and pre-relaxation fiber connector, control system can drive butt joint system and fixed system automatic butt joint.The clamp can reliably fixed connector, compact structure, small space occupation, can be stably fixed and automatic butt joint in limited space;While locking and unlocking operation is convenient, it is convenient for quick replacement test line, suitable for detection of large quantities of optical module.

Description

Technical Field

[0001] This utility model relates to the field of optical testing, and in particular to a pre-relaxed fiber optic connector, a fixing fixture, and a semi-automatic coupling device. Background Technology

[0002] Optical fiber communication is the cornerstone of modern information society. Using light waves as the information carrier and optical fibers as the data transmission medium, it has significant advantages such as large communication capacity, low transmission loss, long transmission distance, and strong resistance to electromagnetic interference. Currently, it carries more than 99% of the world's data transmission traffic.

[0003] Optical modules are fundamental to communication between modern network devices. In today's era of data center equipment numbering in the tens of thousands, they have become an indispensable key component for achieving interconnection between devices. The role of optical modules in communication is to convert between electrical and optical signals, enabling fiber optic transmission. Their core functions include photoelectric conversion and electro-optic conversion, supporting high-speed, high-capacity data transmission, and are widely used in fiber optic communication systems.

[0004] The MPO test leads caused severe damage to the end face of the optical module ferrule.

[0005] During optical module testing, the damage caused to the ferrule end face by the MPO test leads is particularly prominent. Optical modules typically include a male MT ferrule with guide pins, and a female MPO connector with guide pin holes. Precise mating between the male and female MPO connectors is achieved by inserting the guide pins into these holes.

[0006] Before mating with the MPO test lead, the two ferrules are typically in random positions, with the guide pin hole and the guide pin's center axis not coinciding. Therefore, during the mating process, the chamfer of the guide pin needs to be applied to the guide pin hole to laterally straighten the misaligned MT ferrule.

[0007] When the center axes of the two ferrules are significantly misaligned, the guide pin will press against the inner wall of the guide pin hole at the entrance of the female connector's MPO ferrule, forcing the ferrule at the MPO end to move backward. At this time, the retaining spring behind the ferrule is further compressed. Under the continuous thrust, the ferrule is pushed into a suspended state, and during this process, the ferrule is gradually aligned. The moment the ferrules are aligned, the guide pin no longer presses against the guide pin hole, and the suspended ferrule is quickly ejected under the thrust of the rear spring, causing a violent collision between the end face of the MPO ferrule and the end face of the MT ferrule inside the optical module. In other words, this process of aligning the MT ferrule can easily cause serious damage to the end face of the optical module ferrule.

[0008] MPO test leads have a short lifespan.

[0009] In MPO connectors, a retaining spring keeps the MT (Metal Insert) core pressed firmly against the inner housing. The lateral friction force that needs to be overcome to straighten the MT core is directly proportional to the thrust of the retaining spring. Currently, the MT core and its guide pin hole in MPO connectors are typically made of plastic, while the guide pin is a precision component made of stainless steel or ceramic, and it features chamfered edges.

[0010] During docking, under the action of manual pushing force, the guide pin hole provides sufficient lateral support for the guide pin. The two interact strongly and slide against each other until the MT ferrule is aligned. Therefore, during the process of aligning the MT ferrule, the stainless steel guide pin will also experience significant wear on the plastic guide pin hole of the MPO test line. The wear of the guide pin hole will gradually cause the MPO test line to lose its original docking accuracy until it fails.

[0011] Chinese patent CN115453693B discloses a pre-relaxed MPO fiber optic connector, which includes an inner shell sleeved outside the ferrule and capable of limiting the ferrule's position, a spring located at the rear end of the guide pin bracket, a rear shell (i.e., a stop) for fixedly engaging with the inner shell, a slider for repeatedly controlling the extension and retraction of the spring, and an outer shell sleeved outside the inner shell and the slider. This fiber optic connector uses the slider to control the thrust against the ferrule. In the initial stage of engagement, the ferrule is in a free-floating state, and the lateral friction between the ferrule and the inner shell is very small. Therefore, a slight force is sufficient to straighten the MT ferrule. This not only effectively reduces the impact damage to the end face of the optical module ferrule during straightening, but also significantly reduces the wear of the guide pins on the test lead guide pin holes during engagement, extending the service life of the test leads.

[0012] In production applications, the demand for automated fiber optic connector mating is increasing. For example, during the manufacturing process of optical modules, they need to be mated with fiber optic connectors to test various optical performance characteristics. Automated mating improves testing efficiency. However, the direct application of the aforementioned pre-relaxed MPO fiber optic connectors in this automated mating environment still presents the following problems:

[0013] The space for optical module connection is small, making test cable connection difficult.

[0014] The outer shell of the aforementioned pre-relaxed MPO fiber optic connector is not only used to hold the locking structure between the inner shell and the adapter, but also needs to provide sliding space for the slider inside the outer shell. This makes the aforementioned pre-relaxed MPO fiber optic connector larger than ordinary MPO fiber optic connectors. Moreover, 800G and above optical modules are often equipped with dual MPO interfaces. In the limited docking space, two pre-relaxed fiber optic connectors often cannot be inserted into the dual MPO interfaces of the optical module at the same time.

[0015] In automated docking scenarios, it is also necessary to use a fixture to simultaneously clamp two pre-relaxed MPO fiber optic connectors and the dual interfaces of the optical module. In other words, the docking space of the optical module needs to accommodate the fixture and the pre-relaxed MPO fiber optic connectors, which undoubtedly further increases the difficulty of space adaptation.

[0016] Functional structural redundancy

[0017] The aforementioned pre-relaxed MPO fiber optic connector is a general-purpose multi-fiber connector that relies on its own structure to achieve stable mating with the adapter and to fix the slider itself. These functions are not required in an automated mating environment; therefore, the overall fiber optic connector structure has significant potential for simplification.

[0018] Poor test repeatability

[0019] Currently, optical module testing mostly relies on manual operation. When manually connecting the test leads to the optical module, the two components are not always in the correct and consistent position and orientation. The guiding range of the guide pins in the connector is limited. If the initial docking angle deviation is large, it will directly affect the docking status between the test leads and the optical module. This is the main reason for the poor repeatability of manual testing.

[0020] Therefore, there is an urgent need for a connector coupling and docking device that can effectively solve the above problems. Utility Model Content

[0021] This invention provides a pre-relaxed fiber optic connector, a fixing fixture, and a semi-automatic coupling device to solve problems such as limited space for optical module docking, difficulty in docking test lines, redundant functional structure of test lines, and poor test repeatability when using pre-relaxed fiber optic connector test lines for testing.

[0022] In a first aspect, this utility model provides a pre-relaxed optical fiber connector, comprising: a ferrule capable of accommodating an optical fiber, the optical fiber being fixed in the ferrule; an inner housing sleeved outside the ferrule and capable of limiting the ferrule; a guide pin bracket disposed at the rear end of the ferrule; a spring disposed at the rear end of the guide pin bracket and capable of providing elastic force to the guide pin bracket; a rear housing located at the rear end of the inner housing and used for mating with the inner housing; and a metal slider located at the rear end of the ferrule and capable of moving along the extension direction of the optical fiber bundle, the metal slider being capable of compressing the spring, and a groove being provided on at least one side of the metal slider.

[0023] Secondly, this utility model provides a fixing clamp, which includes a fixing base, a baffle, and a rotating shaft. The fixing base is provided with a mounting hole and a plurality of mounting slots. The mounting slots are disposed on the upper surface of the fixing base. The mounting hole penetrates through the thickness direction of the fixing base. One end of the rotating shaft passes through the mounting hole and is fixed to the baffle. The rotating shaft and the baffle can rotate along the mounting hole. When the baffle rotates to the locked position, the baffle at least partially covers the top of the plurality of mounting slots.

[0024] In one possible implementation, the fixing clamp further includes a compression spring, the end of the rotating shaft away from the baffle is provided with a protrusion, the mounting hole is provided with an abutting platform, one end of the compression spring abuts against the protrusion, and the other end abuts against the abutting platform; the fixing base is provided with a plurality of locking protrusions, when the baffle is rotated to the locking position, the plurality of locking protrusions prevent the baffle from rotating, and the height of the locking protrusions is less than the length that the compression spring can continue to compress.

[0025] In one possible implementation, the number of mounting slots N≥2, and when the baffle is rotated to the locked position, there are at least 2 locking protrusions on each side of the baffle.

[0026] In one possible implementation, there is one mounting slot, and the fixed base is further provided with a blocking part. The blocking part is located on one side of the locking position and is used to prevent the baffle from continuing to rotate in a first direction. The locking protrusion is located on the other side of the locking position and is used to prevent the baffle from rotating in a second direction. The first direction is either counterclockwise or clockwise, and the second direction is opposite to the first direction.

[0027] In one possible implementation, the blocking part has a protrusion and the baffle has a recess, and when the baffle is rotated to the locked position, the protrusion is embedded in the recess.

[0028] In one possible implementation, the end of the rotating shaft away from the baffle is provided with a groove, and the protrusion is a retaining ring, which is engaged with the groove.

[0029] Thirdly, this utility model provides a semi-automatic coupling device, which includes a fixing system, a docking system, a driving system, a control system, and a base. The fixing system and the driving system are fixed on the base. The fixing system is used to fix the object to be coupled. The docking system includes the aforementioned fixing clamp and the aforementioned pre-relaxed fiber optic connector. The pre-relaxed fiber optic connector is placed in the mounting groove, and the baffle prevents the pre-relaxed fiber optic connector from detaching from the mounting groove from above. The control system is used to control the driving system to drive the docking system to move towards the fixing system.

[0030] In one possible implementation, the docking system further includes a slide rail and a sliding platform, the fixing clamp is fixed to the sliding platform, the sliding platform is threadedly connected to the output shaft of the drive system, and the drive system is used to drive the sliding platform to move on the slide rail.

[0031] In one possible implementation, the fixing system includes a sensor that sends a signal when the object to be coupled is installed in place, and the control system controls the docking system to move toward the fixing system; when the sensor detects that the object to be coupled has been removed, the control system controls the docking system to return to its initial position.

[0032] Beneficial effects

[0033] Compared to existing pre-relaxed multi-fiber connectors, the pre-relaxed fiber connector provided by this invention eliminates the redundant shell structure and optimizes the structure of the metal slider. This significantly saves installation space while ensuring the slider's own strength, and also allows for convenient and stable connection with the clamp. These improvements make it possible to achieve automatic dual-port docking in the limited docking space of the optical module.

[0034] Furthermore, the fixing clamp uses a rotating baffle located above the mounting slot to lock and unlock the pre-relaxed fiber optic connector within the mounting slot. In the locked state, the pre-relaxed fiber optic test lead is reliably fixed in the mounting slot; when unlocked, the pre-relaxed fiber optic test lead can be easily removed. Using such a fixing clamp not only occupies little space, facilitating stable fixing within limited space, but also offers convenient locking and unlocking operations, enabling quick replacement of pre-relaxed test leads, making it suitable for testing large batches of optical modules.

[0035] The pre-relaxed fiber optic connector is reliably fixed in the mounting slot, which facilitates the automation of fiber optic connector mating. Compared with the manual insertion and removal of fiber optic connectors, automatic mating significantly improves mating efficiency. At the same time, the fixing clamp in the electric drive device ensures that the fiber optic connector is always in the same position and orientation before each mating, which improves the stability and consistency of mating and further enhances the reliability of the test results.

[0036] The semi-automatic coupling device for fiber optic connectors using the fixing clamp of this invention can significantly reduce mechanical damage to the optical module when using pre-relaxed test leads for docking tests, and can achieve automated docking, thereby improving testing efficiency. Attached Figure Description

[0037] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0038] Figure 1 This is a structural diagram of an 800G optical module;

[0039] Figure 2 This is a schematic diagram of the pre-relaxed fiber optic connector in this utility model;

[0040] Figure 3 This is an exploded view of the pre-relaxed fiber optic connector in this utility model;

[0041] Figure 4 This is a schematic diagram of the structure of a fixing clamp according to an embodiment of the present invention;

[0042] Figure 5 yes Figure 4 An exploded view of the fixing fixture in the diagram;

[0043] Figure 6 In this utility model, the pre-relaxed fiber optic connector is fixed in Figure 4 Schematic diagram of the fixed clamp in the middle;

[0044] Figure 7 This is a schematic diagram showing the state of the pre-relaxed fiber optic connector and the optical module being connected in this utility model;

[0045] Figure 8 This is a schematic diagram of the semi-automatic coupling device in this embodiment;

[0046] Figure 9 This is a schematic diagram of another fixing clamp in this utility model;

[0047] Figure 10 yes Figure 9 Exploded view of the fixed clamp;

[0048] Figure 11 In this utility model, the pre-relaxed fiber optic connector is fixed in Figure 9 A schematic diagram of the fixed clamp in the middle.

[0049] Explanation of reference numerals in the attached figures:

[0050] 10. Optical module; 11. Optical module housing; 12. MT interface; 13. Pull ring; 131. Grip end; 20. Pre-relaxed fiber optic connector; 21. Ferrule; 22. Fiber optic cable; 23. Inner housing; 24. Guide pin bracket; 25. Spring; 26. Rear housing; 27. Metal slider; 271. Groove; 30. Fixing clamp; 31. Fixing base; 311. Mounting hole; 3111. Abutment platform; 312. Mounting slot; 313. Locking protrusion; 314. Blocking part; 3141. Protrusion; 32. Baffle; 321. Recess; 33. Rotating shaft; 331. Protrusion; 34. Compression spring; 40. Semi-automatic coupling device; 41. Fixing system; 411. Adjustment platform; 412. Test clamp; 42. Docking system; 421. Sliding platform; 43. Drive system; 44. Base; 441. Slide rail. Detailed Implementation

[0051] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the scope of protection of the present utility model.

[0052] In the description of this utility model, it should be understood that the use of "first" and "second" in different embodiments is used to distinguish the same component in different embodiments, and does not necessarily mean that there are other components with the same structure in that embodiment.

[0053] This invention takes the automatic insertion loss test of an 800G optical module as an example to describe the pre-relaxed fiber optic connector, fixing fixture, and semi-automatic coupling device of this utility model.

[0054] Example

[0055] Figure 1 This is a structural diagram of an 800G optical module, as shown below. Figure 1 As shown, the packaged optical module 10 includes an optical module housing 11, a PCB board, an MT interface 12, and a pull ring 13. The PCB board extends from one end of the optical module housing for communication connection with other devices. The two MT interfaces 12 are arranged side by side at the other end of the optical module housing and can be coupled with the MPO connector. The pull ring 13 is fixed on both sides of the optical module housing to facilitate the operator to insert and remove the optical module.

[0056] The pull ring 13 is roughly C-shaped. The gripping end 131 of the pull ring 13 is designed to offset from the MT interface in the height direction to facilitate the insertion of the fiber optic connector into the MT interface 12. The main body of the pull ring 13 extends outward along the length of the optical module housing, which greatly increases the convenience of optical module insertion and removal operations. However, during automatic testing, the extended pull ring can also hinder the automatic coupling of the MPO connector. The MPO connector and the clamp that fixes the MPO connector need to be compact in size to pass smoothly through the internal space of the C-shaped pull ring 13 without interfering with or colliding with it.

[0057] Figure 2 This is a schematic diagram of the pre-relaxed fiber optic connector in this utility model. Figure 3 This is an exploded view of the pre-relaxed fiber optic connector in this utility model, as shown below. Figure 2 and Figure 3 As shown, the present invention provides a pre-relaxed fiber optic connector 20, which includes: a ferrule 21, which can accommodate an optical fiber 22, the optical fiber 22 being fixed in the ferrule 21; an inner housing 23, which is sleeved on the outside of the ferrule 21 and can limit the ferrule 21; a guide pin bracket 24, which is disposed at the rear end of the ferrule 21; a spring 25, which is disposed at the rear end of the guide pin bracket 24 and can provide elastic force to the guide pin bracket 24; a rear housing 26, located at the rear end of the inner housing 23, which is used to mate with the inner housing 23; and a metal slider 27, located at the rear end of the ferrule 21, which can move along the extension direction of the optical fiber bundle, the metal slider 27 can compress the spring 25, and at least one side of the metal slider 27 is provided with a groove 271.

[0058] Compared to existing pre-relaxed multi-fiber connectors, the pre-relaxed fiber connector provided by this invention eliminates unnecessary housing structures and adjusts the metal slider structure. This significantly saves installation space while ensuring the strength of the slider itself, and also allows for convenient and stable connection with the clamp. These improvements make it possible to achieve automatic dual-port docking within the limited docking space of the optical module.

[0059] Figure 4 This is a schematic diagram of the structure of a fixing clamp according to an embodiment of this utility model. Figure 5 yes Figure 4 An exploded view of the fixing fixture in the diagram, as shown below. Figure 4 and Figure 5As shown, the fixing fixture 30 includes a fixing base 31, a baffle 32, and a rotating shaft 33. The fixing base 31 is provided with a mounting hole 311 and a mounting groove 312. The mounting groove 312 is disposed on the upper surface 313 of the fixing base. The mounting hole 311 penetrates through the thickness direction of the fixing base 31. One end of the rotating shaft 33 passes through the mounting hole 311 and is fixed to the baffle 32. The rotating shaft 33 and the baffle 32 can rotate along the mounting hole 311. When the baffle 32 is rotated to the locked position, the baffle 32 at least partially covers the top of the mounting groove 312.

[0060] Specifically, in this embodiment, there are two mounting slots 312. When the baffle 32 is rotated to the locked position, there are two locking protrusions 313 on each side of the baffle 32. The four locking protrusions form two positions that can fix the baffle, corresponding to the locked position and the unlocked position. The two locking protrusions on each side can reliably fix the baffle in the unlocked position or the locked position.

[0061] The bottom surface of the baffle 32 is provided with a threaded hole, and the end of the rotating shaft 33 that is fixed to the baffle 32 is provided with a thread, so that the baffle can be fixed to the rotating shaft by the thread. The threaded hole is located at the center of the bottom surface of the baffle, so that when the baffle 32 is rotated to the locked position, it can cover the top of the two mounting slots at the same time.

[0062] The position of the threaded hole can be adjusted according to the actual situation, as long as the baffle can at least partially cover the top of two mounting slots. The number of mounting slots can be increased as needed. By increasing the number of mounting slots, extending the length of the baffle can ensure that it covers the top of all mounting slots simultaneously.

[0063] The fixing clamp 30 also includes a compression spring 34. The end of the rotating shaft 33 away from the baffle 32 is provided with a protrusion 331. The mounting hole 311 is provided with an abutment platform 3111. One end of the compression spring 34 abuts against the protrusion 331, and the other end of the compression spring 34 abuts against the abutment platform 3111. The fixing base 31 is provided with a plurality of locking protrusions 313. When the baffle 32 is rotated to the locking position, the plurality of locking protrusions 313 prevent the baffle 32 from rotating. The height of the locking protrusions 313 is less than the length that the compression spring 34 can continue to compress.

[0064] In this embodiment, the compression spring 34 is compressed and pressed against the protrusion 331 and the abutment platform 3111. The compression spring 34 always provides a downward thrust to the protrusion 331, so that the baffle 32 at the other end of the rotating shaft 33 will always be in contact with the upper surface of the fixing clamp 30.

[0065] In this embodiment, the compression spring is one means of providing thrust to the protrusion. Thrust can also be provided in other ways, such as replacing the compression spring with a spring sheet, or two repulsive magnets, etc.

[0066] In one possible implementation, the end of the rotating shaft 33 away from the baffle 32 is provided with a groove, and the protrusion 331 is a retaining ring that engages with the groove. In other possible implementations, the protrusion and the rotating shaft are integrally formed or welded together.

[0067] Figure 6 In this utility model, the pre-relaxed fiber optic connector is fixed in Figure 4 A schematic diagram of the structure of the fixed clamp is shown below. Figure 6 As shown, the baffle 32 is in the locked position. Due to the thrust of the compression spring 34, the pre-relaxed fiber optic connector 20 in the mounting slot 312 cannot easily push up the baffle 32 and disengage from the fixing clamp 30.

[0068] When it is necessary to unlock the fixing clamp 30, the baffle 32 can be manually pinched and lifted upwards. The compression spring 34 is further compressed. Since the height of the locking protrusion 313 is less than the length that the compression spring 34 can continue to compress, the baffle 32 can be lifted above the locking protrusion 313. At this time, the baffle is no longer restricted by the locking protrusion 313, and the baffle 32 can be rotated freely. The baffle 32 no longer covers the mounting slot 312, and the pre-relaxed fiber optic connector 20 can be removed from the mounting slot 312.

[0069] This type of fixing clamp uses a rotating baffle located above the mounting slot to lock and unlock the pre-relaxed fiber optic connector within the slot. When locked, the pre-relaxed fiber optic test lead is reliably fixed in the mounting slot; when unlocked, the pre-relaxed fiber optic test lead can be easily removed. Using this fixing clamp not only saves space, facilitating stable fixing within limited space, but also provides convenient locking and unlocking operations, enabling quick replacement of pre-relaxed test leads to handle the testing of large batches of optical modules.

[0070] Figure 7 This is a schematic diagram showing the state of the pre-relaxed fiber optic connector and the optical module in this utility model, as shown below. Figure 7 As shown, the pre-relaxed fiber optic connector is fixed in the fixing fixture. The overall width of the pre-relaxed fiber optic connector and the fixing fixture is smaller than the internal width of the C-shaped pull ring, thereby easily realizing the automatic docking of the fiber optic connector and the optical module.

[0071] Figure 8 This is a schematic diagram of the semi-automatic coupling device in this embodiment, as shown below. Figure 8 As shown, the semi-automatic coupling device 40 includes a fixing system 41, a docking system 42, a drive system 43, a control system, and a base 44. The fixing system 41 and the drive system 43 are fixedly mounted on the base 44.

[0072] The fixing system 41 is used to fix the object to be coupled. Here, fixing the object to be coupled mainly refers to the optical module 10, but it can also be other optical devices that need to be coupled, such as fiber optic connectors.

[0073] The docking system 42 includes the aforementioned fixing clamp 30 and the aforementioned pre-relaxed fiber optic connector 20. The pre-relaxed fiber optic connector 20 is placed in the mounting groove 312 of the fixing clamp 30, and the baffle 32 prevents the pre-relaxed fiber optic connector 20 from detaching from the mounting groove 312.

[0074] The control system controls the drive system 43, which drives the docking system 42 to move toward the fixed system 41, thereby achieving coupling and docking between the pre-relaxed fiber optic connector 20 on the docking system 42 and the optical module 10 in the fixed system 41.

[0075] The base 44 is provided with a slide rail 441, and the docking system 42 also includes a sliding platform 421. The fixing clamp 30 is fixed on the sliding platform 421. The sliding platform 421 is threadedly connected to the output shaft 431 of the drive system 43. The drive system 43 drives the sliding platform 421 to move on the slide rail.

[0076] The fixing system 41 also includes an adjustment platform 411 and a test fixture 412. The adjustment platform 411 is fixed on the base 44, and the test fixture is used to fix the optical module 10. The adjustment platform 411 is a three-axis adjustment platform that can realize the alignment between the fixing system and the docking system.

[0077] In one possible implementation, a sensor is provided on the inner surface of the test fixture. After the object to be coupled is installed in place, the sensor sends a signal, and the control system controls the docking system to move towards the fixed system to complete the docking. When the sensor detects that the object to be coupled has been removed, the control system controls the docking system to return to the initial position.

[0078] Figure 9 This is a schematic diagram of another fixing clamp in this utility model. Figure 10 yes Figure 9 Exploded view of the fixed clamp. Figure 11 In this utility model, the pre-relaxed fiber optic connector is fixed in Figure 11 A schematic diagram of the structure of the fixed clamp is shown below. Figure 9 and Figure 11 As shown, there is one mounting slot 312. The fixed base 31 is also provided with a blocking part 314. The blocking part 314 is located on one side of the locking position. The blocking part 314 can prevent the baffle 32 from continuing to rotate in the first direction. The locking protrusion 313 is on the other side of the locking position. The locking protrusion 313 prevents the baffle 32 from rotating in the second direction. The first direction is either counterclockwise or clockwise, and the second direction is opposite to the first direction.

[0079] Specifically, the blocking part 314 is provided with a protrusion 3141, and the baffle 32 is provided with a recess 321. When the baffle 32 is rotated to the locked position, the protrusion 3141 is inserted into the recess 321. In this way, the baffle can be stably fixed in the locked position.

[0080] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A pre-relaxed fiber optic connector, characterized in that, include: A ferrule that can accommodate an optical fiber, the optical fiber being fixed in the ferrule; An inner housing, which is fitted over the outside of the insert and can limit the position of the insert; A guide pin bracket is disposed at the rear end of the ferrule; A spring, located at the rear end of the guide needle holder, provides elastic force to the guide needle holder; The rear housing, located at the rear end of the inner housing, is used to dock with the inner housing; A metal slider, located at the rear end of the ferrule, is movable along the extension direction of the optical fiber bundle. The metal slider is capable of compressing the spring, and a groove is provided on at least one side of the metal slider.

2. A fixing clamp, characterized in that, The device includes a fixed base, a baffle, and a rotating shaft. The fixed base has mounting holes and several mounting slots. The mounting slots are located on the upper surface of the fixed base. The mounting holes extend through the thickness direction of the fixed base. One end of the rotating shaft passes through the mounting holes and is fixed to the baffle. The rotating shaft and the baffle can rotate along the mounting holes. When the baffle rotates to the locked position, the baffle at least partially covers the top of the several mounting slots.

3. The fixing clamp according to claim 2, characterized in that, It also includes a compression spring. The end of the rotating shaft away from the baffle is provided with a protrusion. The mounting hole is provided with an abutting platform. One end of the compression spring abuts against the protrusion and the other end abuts against the abutting platform. The fixed base is provided with a plurality of locking protrusions. When the baffle is rotated to the locked position, the plurality of locking protrusions prevent the baffle from rotating. The height of the locking protrusions is less than the length that the compression spring can continue to compress.

4. The fixing clamp according to claim 3, characterized in that, The number of mounting slots N≥2, and when the baffle is rotated to the locking position, there are at least 2 locking protrusions on each side of the baffle.

5. The fixing clamp according to claim 3, characterized in that, The number of mounting slots is one, and the fixed base is also provided with a blocking part. The blocking part is located on one side of the locking position and is used to prevent the baffle from continuing to rotate in the first direction. The locking protrusion is located on the other side of the locking position and is used to prevent the baffle from rotating in the second direction. The first direction is either counterclockwise or clockwise, and the second direction is opposite to the first direction.

6. The fixing clamp according to claim 5, characterized in that, The blocking part has a protrusion, and the baffle has a recess. When the baffle is rotated to the locked position, the protrusion is embedded in the recess.

7. The fixing clamp according to claim 3, characterized in that, The end of the rotating shaft away from the baffle is provided with a groove, and the protrusion is a retaining ring, which is engaged with the groove.

8. A semi-automatic coupling device, characterized in that, It includes a fixing system, a docking system, a drive system, a control system, and a base, wherein the fixing system and the drive system are fixed to the base; The fixing system is used to fix the object to be coupled. The docking system includes a fixing clamp as described in any one of claims 2-7 and a pre-relaxed fiber optic connector as described in claim 1, wherein the pre-relaxed fiber optic connector is placed in the mounting slot and a baffle prevents the pre-relaxed fiber optic connector from detaching from the mounting slot from above the mounting slot. The control system is used to control the drive system and drive the docking system to move toward the stationary system.

9. The semi-automatic coupling device according to claim 8, characterized in that, The docking system also includes a slide rail and a sliding platform. The fixing clamp is fixed to the sliding platform. The sliding platform is threadedly connected to the output shaft of the drive system. The drive system is used to drive the sliding platform to move on the slide rail.

10. The semi-automatic coupling device according to claim 9, characterized in that, The fixing system includes a sensor. When the object to be coupled is installed in place, the sensor sends a signal, and the control system controls the docking system to move toward the fixing system. When the sensor detects that the object to be coupled has been removed, the control system controls the docking system to return to its initial position.

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