A multi-interface compatible fiber optic adapter

Abstract

The utility model discloses a kind of multi-interface compatible optical fiber adapters, it relates to optical fiber communication equipment technical field, the equipment fixed component and interface module, fixed component is cuboid bearing structure, left end is equipped with optical fiber through-hole for external optical fiber access, right end opens rectangular groove one, T-shaped slide rail groove is symmetrically arranged in its left and right side walls, there is wear strip, positioning pin and mushroom-shaped elastic member in groove, bottom surface is equipped with adaptation module groove, fixed groove one is arranged in the adjacent side wall of T-shaped slide rail groove, fixed groove two is symmetrically arranged in its inner wall, interface module outer side wall is equipped with T-shaped sliding block, and T-shaped slide rail groove is slidably matched, left end connection port adaptation module and insert adaptation module groove, upper and lower end is equipped with trapezoidal fixed block, and its rectangular through-hole passes through rectangular slide rail groove. The utility model realizes accurate installation by T-shaped slide rail guidance, elastic piece pre-positioning, trapezoidal fixed block and rectangular sliding block form double locking, with the characteristics of convenient plugging, accurate positioning, locking reliable, applicable to multi-interface optical fiber communication scene.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber communication equipment technology, and in particular to a multi-interface compatible optical fiber adapter. Background Technology

[0002] In fiber optic communication networks, fiber optic adapters, as key components connecting different fiber optic interfaces, directly impact network deployment efficiency and maintenance costs due to their compatibility, stability, and ease of operation. Existing fiber optic adapters suffer from the following significant drawbacks:

[0003] 1. Limited interface compatibility: Traditional adapters are mostly designed with fixed interfaces (such as a single SC, LC or FC interface). When it is necessary to connect devices with different types of interfaces, the entire adapter needs to be replaced, resulting in a large variety of spare parts in stock (requiring multiple interface models). Moreover, the replacement process requires interruption of network communication, affecting system continuity.

[0004] 2. Insufficient positioning accuracy: Although some modular adapters support interface replacement, the matching accuracy between the interface module and the fixed component is low. The optical fiber axis deviation often exceeds 0.1mm due to excessive guide rail gaps and missing positioning structures, resulting in insertion loss fluctuations ≥0.3dB, which seriously affects the quality of optical signal transmission.

[0005] 3. Poor reliability of locking structure: Existing locking mechanisms mostly adopt a single buckle or thread design, which is easy to loosen in vibration environments (such as industrial workshops and outdoor base stations). The locking force attenuation rate exceeds 15%, and unlocking requires special tools, which is time-consuming (average replacement time ≥ 3 minutes), increasing operation and maintenance costs.

[0006] 4. High operational complexity: The installation and disassembly of the interface module rely on complex mechanical transmission structures (such as cams and gears). Not only are the machining accuracy requirements of the parts high (the tolerance needs to be controlled within ±0.05mm), but the assembly process is also cumbersome and prone to jamming or failure due to assembly errors.

[0007] 5. Poor environmental adaptability: Most adapters lack wear-resistant treatment on the sliding mating surfaces. After more than 1,000 insertion and removal cycles, wear will increase the mating clearance. At the same time, elastic positioning components (such as rubber pads) are prone to aging in a wide temperature range of -40℃ to 85℃, resulting in a preload reduction of ≥30%.

[0008] To address the aforementioned issues, there is an urgent need to develop a fiber optic adapter that features multi-interface compatibility, high-precision positioning, stable locking, and easy operation, in order to meet the demands of communication networks for efficient deployment, low-loss transmission, and low-cost maintenance. Utility Model Content

[0009] The purpose of this utility model is to solve at least one of the technical problems existing in the prior art, and to provide a multi-interface compatible fiber optic adapter that can solve the problems of multi-interface compatibility, high-precision positioning, stable locking and convenient operation.

[0010] To achieve the above objectives, this utility model provides the following technical solution: a multi-interface compatible fiber optic adapter, comprising a fixed component and an interface module, wherein the interface module is disposed at the right end of the fixed component;

[0011] The fixed component has an optical fiber through hole at the left end and a rectangular groove at the right end. The bottom surface of the rectangular groove has an adapter module groove, and T-shaped slide rail grooves are provided on the opposite side walls inside the rectangular groove.

[0012] The T-shaped slide rail groove has a fixing groove 1 on the adjacent side wall, and a fixing groove 2 is symmetrically provided on the opposite side wall inside the fixing groove 1.

[0013] The outer wall of the interface module is fixedly connected to a T-shaped slider that is slidably connected to a T-shaped slide rail groove. A cylindrical block is fixedly connected to the left end of the T-shaped slider. An interface adapter module that is inserted into the adapter module slot is fixedly connected to the left end of the interface module.

[0014] The interface module has trapezoidal fixing blocks that are fixedly connected to the upper and lower ends and inserted into the fixing slots. The trapezoidal fixing blocks have rectangular through holes, and two rectangular slide rail grooves are formed on the inner walls opposite to the rectangular through holes.

[0015] Preferably, a wear-resistant strip is fixedly installed on the inner wall of the T-shaped slide rail groove, and the sliding fit clearance between the T-shaped slide rail groove and the T-shaped slider is 0.02mm~0.05mm.

[0016] Preferably, the cylindrical block has a positioning hole that engages with the positioning pin and the elastic element, and the elastic element is interference-fitted with the positioning hole to form a radial preload of 1.5N~2N.

[0017] Preferably, T-shaped slide rail grooves are symmetrically formed on opposite side walls of the rectangular groove, and a positioning pin is fixedly connected to the inner bottom surface, with a mushroom-shaped elastic element fixedly connected to the positioning pin.

[0018] Preferably, the inclined angle of the trapezoidal fixing block is 30°, and the contact area with the inner wall of the fixing groove is ≥80%.

[0019] Each rectangular through hole in the trapezoidal fixing block is equipped with a rectangular slider.

[0020] Preferably, the spring has a wire diameter of 0.5 mm, a stiffness coefficient of 1.2 N / mm, and generates a thrust of 6 N when the spring is compressed by 5 mm.

[0021] Preferably, the interference fit between the rectangular slider and the second fixing groove is 0.05mm, and the total locking force formed by the symmetrical rectangular sliders is ≥12N.

[0022] Preferably, a spring is fixedly installed on one side of the inner wall of the rectangular slide rail groove, and a movable block is connected to one end of the spring. A rectangular slider that is inserted into the fixed groove is fixedly connected to the movable block, and the movable block is symmetrical about the rectangular slider.

[0023] Compared with the prior art, the beneficial effects of this utility model are:

[0024] 1. This multi-interface compatible fiber optic adapter features an interface module that slides into the T-shaped slide rail groove of the fixing component via a T-shaped slider on the outer wall. The T-shaped slider is inserted longitudinally along the slide rail groove, and the PTFE wear-resistant strip on the inner wall of the groove controls the sliding resistance to ≤3N. Simultaneously, the rigid guide of the slide rail (parallelism ≤0.02mm) ensures that the lateral deviation of the interface module is ≤0.05mm. As the insertion process progresses, the positioning hole on the cylindrical block gradually fits into the positioning pin on the bottom surface of the T-shaped slide rail groove. When the preset position is reached, the mushroom-shaped silicone elastic element is deformed by the positioning hole and then reset, forming a radial preload of 1.5N~2N and emitting a "click" feedback sound, achieving initial axial positioning (axial error ≤0.03mm). During this process, the interface adapter module on the left end of the interface module is simultaneously inserted into the adapter module groove of the fixing component. The two are fitted with a gap of 0.02mm~0.05mm (tolerance ±0.01mm) to ensure that the optical fiber sleeve axis deviation is ≤0.05mm, laying the alignment foundation for optical signal transmission.

[0025] 2. This multi-interface compatible fiber optic adapter features trapezoidal fixing blocks at both ends that slide smoothly into the first fixing slot. The 30° inclined surface automatically corrects minor tilts within ±2° through guiding action, ensuring that the contact area between the fixing block and the inner wall of the slot is ≥80%, completing the first-level locking. Simultaneously, the rectangular slider inside the trapezoidal fixing block is ejected along the rectangular slide rail groove under the thrust of the spring (0.5mm wire diameter, stiffness coefficient 1.2N / mm) and inserts into the second fixing slot. At this time, the spring is compressed by 5mm, generating a 6N thrust. Through a 0.05mm interference fit, a total locking force of ≥12N is formed, limiting axial movement to ≤0.01mm, achieving the second-level locking. The symmetrical connection design between the movable block and the rectangular slider ensures uniform transmission of spring force. Combined with the continuous radial preload of the mushroom-shaped elastic element, the locking force attenuates by ≤5% under vibration environments of 10~2000Hz, forming multiple anti-loosening effects.

[0026] 3. This multi-interface compatible fiber optic adapter allows for easy disassembly. By pulling the interface module upwards, the compressed spring causes the rectangular slider to exit from the second fixing slot (with a 3mm exit stroke), releasing the secondary lock. At this point, the trapezoidal fixing block can slide freely within the first fixing slot. Pulling the interface module outwards along the T-shaped slide rail causes the positioning hole to deform the elastic element again, disengaging it from the positioning pin constraint. The T-shaped slider then slides out along the slide rail, completing the disassembly. No special tools are required throughout the process, and a single person can complete the operation within 10 seconds. By replacing the interface module with different interface adapters (SC / LC / ST / FC / MPO, etc.), and utilizing the unified T-shaped slide rail, positioning hole, and locking structure, a universal connection with the fixing component can be achieved, adapting to various fiber optic interface types without adjusting the fixing component. Attached Figure Description

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0028] Figure 1 This is a schematic diagram of a multi-interface compatible fiber optic adapter according to the present invention;

[0029] Figure 2 This utility model Figure 1 A schematic diagram of the interface module in a multi-interface compatible fiber optic adapter;

[0030] Figure 3 This is a schematic diagram of the fixed components in a multi-interface compatible fiber optic adapter according to the present invention;

[0031] Figure 4 This utility model Figure 2 Enlarged diagram of point A in the middle.

[0032] Reference numerals: 1. Fixing component; 2. Fiber optic through hole; 3. Interface adapter module; 4. Interface module; 5. Trapezoidal fixing block; 6. T-shaped slider; 7. Cylindrical block; 8. Positioning hole; 9. T-shaped slide rail groove; 10. Fixing groove one; 11. Rectangular groove; 12. Wear-resistant strip; 13. Elastic element; 14. Positioning pin; 15. Fixing groove two; 16. Adapter module groove; 17. Rectangular slide rail groove; 18. Movable block; 19. Spring; 20. Rectangular slider; 21. Rectangular through hole. Detailed Implementation

[0033] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0034] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] In the description of this utility model, terms such as greater than, less than, and exceeding are understood to exclude the stated number, while terms such as above, below, and within are understood to include the stated number. The use of terms like "first" and "second" is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the quantity or sequence of the indicated technical features.

[0036] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0037] Please see Figure 1-4 This utility model provides a technical solution: a multi-interface compatible fiber optic adapter. It includes a fixing component 1 and an interface module 4. The interface module 4 is located at the right end of the fixing component 1. The left end of the fixing component 1 has a fiber optic through hole 2, and the right end of the fixing component 1 has a rectangular groove 11.

[0038] T-shaped slide rail grooves 9 are provided on opposite side walls of the rectangular groove 11, and are symmetrical from left to right. Wear-resistant strips 12 are fixedly installed on the inner wall of the T-shaped slide rail groove 9. A positioning pin 14 is fixedly connected to the bottom surface of the T-shaped slide rail groove 9, and an elastic element 13 is fixedly connected to the positioning pin 14. The elastic element 13 is mushroom-shaped. An adapter module groove 16 is provided on the bottom surface of the rectangular groove 11.

[0039] The T-shaped slide rail groove 9 has a fixing groove 10 on each of its adjacent side walls, and a fixing groove 2 15 is provided on each of the opposite side walls of the fixing groove 10, and they are symmetrical.

[0040] T-shaped sliders 6 are fixedly connected to the outer wall of interface module 4. The T-shaped sliders 6 are slidably connected to the T-shaped slide rail grooves 9. A cylindrical block 7 is fixedly connected to the left end of the T-shaped slider 6. A positioning hole 8 is provided on the cylindrical block 7, and the size of the positioning hole 8 is the same as the shape of the positioning pin 14 and the elastic element 13. The positioning pin 14 and the elastic element 13 are inserted into the positioning hole 8. Interface module 4 forms a sliding fit with the T-shaped slide rail grooves 9 of the fixing component 1 through the T-shaped sliders 6 on the outer wall. The T-shaped sliders 6 are inserted longitudinally along the slide rail groove. The polytetrafluoroethylene wear-resistant strips 12 on the inner wall of the groove control the sliding resistance to ≤3N. At the same time, the rigid guide of the slide rail (parallelism ≤0.02mm) ensures that the lateral deviation of interface module 4 is ≤0.0. As the insertion process progresses, the positioning hole 8 on the cylindrical block 7 gradually fits into the positioning pin 14 on the bottom surface of the T-shaped slide rail groove 9. When it reaches the preset position, the mushroom-shaped silicone elastic element 13 is deformed by the positioning hole 8 and then reset, forming a radial preload of 1.5N~2N and emitting a "click" feedback sound, thus achieving preliminary axial positioning (axial error ≤0.03mm). During this process, the interface adapter module 3 at the left end of the interface module 4 is simultaneously inserted into the adapter module slot 16 of the fixing component. The two are fitted with a gap of 0.02mm~0.05mm (tolerance ±0.01mm) to ensure that the optical fiber sleeve axis deviation is ≤0.05mm, laying the alignment foundation for optical signal transmission.

[0041] An interface adapter module 3 is fixedly connected to the left end of the interface module 4, and the interface adapter module 3 is plugged into the adapter module slot 16.

[0042] Both ends of the interface module 4 are fixedly connected to trapezoidal fixing blocks 5. The trapezoidal fixing blocks 5 are plugged into the fixing groove 10. The trapezoidal fixing blocks 5 at both ends slide into the fixing groove 10. The 30° inclined surface automatically corrects the slight tilt within ±2° through the guiding action, so that the contact area between the fixing block and the inner wall of the groove is ≥80%, completing the first-level locking. At the same time, the rectangular slider 20 inside the trapezoidal fixing block 5 is pushed out along the rectangular slide rail groove 17 under the thrust of the spring 19 (wire diameter 0.5mm, stiffness coefficient 1.2N / mm) and inserts into the second fixing groove 15. At this time, the spring 19 is compressed by 5mm to generate a thrust of 6N. Through the interference fit of 0.05mm, the total locking force of the upper and lower parts is ≥12N, which limits the axial movement to ≤0.01mm, realizing the second-level locking. The symmetrical connection design of the movable block 18 and the rectangular slider 20 ensures that the force of the spring 19 is evenly transmitted. With the continuous radial preload of the mushroom-shaped elastic element 13, the locking force is attenuated by ≤5% in the 10~2000Hz vibration environment, forming multiple anti-loosening effects.

[0043] A rectangular through hole 21 is provided inside the trapezoidal fixing block 5, and two rectangular slide rail grooves 17 are provided on the inner walls opposite to the rectangular through hole 21.

[0044] Two springs 19 are fixedly installed on one side of the inner wall of the rectangular slide rail groove 17. One end of the spring 19 is fixedly connected to a movable block 18, and a rectangular slider 20 is fixedly connected to the movable block 18. The movable block 18 is symmetrical about the rectangular slider 20.

[0045] The rectangular slider 20 is connected to the fixed groove 15 by insertion.

[0046] Working principle: During installation, the interface module 4 forms a sliding fit with the T-shaped slide rail groove 9 of the fixing component 1 through the T-shaped slider 6 on the outer wall. The T-shaped slider 6 is inserted longitudinally along the slide rail groove. The polytetrafluoroethylene wear-resistant strip 12 on the inner wall of the groove controls the sliding resistance to ≤3N. At the same time, the rigid guide of the slide rail (parallelism ≤0.02mm) ensures that the lateral deviation of the interface module is ≤0.05mm. As the insertion process progresses, the positioning hole 8 on the cylindrical block 7 gradually fits into the positioning pin 14 on the bottom surface of the T-shaped slide rail groove 9. When the preset position is reached, After being squeezed and deformed by the positioning hole 8, the mushroom-shaped silicone elastic element 13 returns to its original position, forming a radial preload of 1.5N~2N and emitting a "click" feedback sound, thus achieving initial axial positioning (axial error ≤0.03mm). During this process, the interface adapter module 3 at the left end of the interface module 4 is simultaneously inserted into the adapter module slot 16 of the fixing component. The two are fitted with a gap of 0.02mm~0.05mm (tolerance ±0.01mm) to ensure that the optical fiber sleeve axis deviation is ≤0.05mm, laying the alignment foundation for optical signal transmission.

[0047] After the interface module 4 is fully inserted, it enters the locking stage: the trapezoidal fixing blocks 5 at the top and bottom end slide into the fixing groove 10. The 30° inclined surface automatically corrects the slight tilt within ±2° through the guiding action, so that the contact area between the fixing block and the inner wall of the groove is ≥80%, completing the first-level locking. At the same time, the rectangular slider 20 inside the trapezoidal fixing block 5 is pushed out along the rectangular slide rail groove 17 under the thrust of the spring 19 (wire diameter 0.5mm, stiffness coefficient 1.2N / mm) and inserted into the fixing groove 2 15. At this time, the spring 19 is compressed by 5mm to generate a thrust of 6N. Through the interference fit of 0.05mm, the total locking force of the upper and lower parts is ≥12N, which limits the axial movement to ≤0.01mm, realizing the second-level locking. The symmetrical connection design of the movable block 18 and the rectangular slider 20 ensures that the force of the spring 19 is evenly transmitted. With the continuous radial preload of the mushroom-shaped elastic element 13, the locking force is attenuated by ≤5% in the 10~2000Hz vibration environment, forming multiple anti-loosening effects.

[0048] When replacing interface module 4, pull interface module 4 upwards to compress spring 19 and cause rectangular slider 20 to exit from fixed groove 15 (exit stroke 3mm), releasing the secondary lock. At this time, trapezoidal fixing block 5 can slide freely in fixed groove 10. Pull interface module 4 outwards along T-shaped slide rail groove 9. Positioning hole 8 forces elastic element 13 to deform again, breaking free from the constraint of positioning pin 14. T-shaped slider 6 slides out along slide rail groove to complete disassembly. No special tools are required throughout the process, and a single person can complete it within 10 seconds. By replacing interface module 4 with different interface adapters (SC / LC / ST / FC / MPO, etc.), a universal connection with the fixed component can be achieved by using a unified T-shaped slide rail, positioning hole 8 and locking structure. Multiple fiber optic interface types can be adapted without adjusting the fixed component.

[0049] Structural Description:

[0050] Fixed component 1: The whole is a cuboid structure and is the basic load-bearing component of the adapter. It is used to install the interface module 4 and connect the external optical fiber. It achieves precise matching with the module through the slots and holes.

[0051] Fiber optic through-hole 2: A circular through-hole (diameter matching the fiber optic sleeve) at the center of the left end of the fixing component 1, allowing external optical fibers to pass through and connect with the internal interface adapter module 3. It is the channel for optical signal input and ensures the axial continuity of the optical fiber path.

[0052] Interface adapter module 3: The rectangular block structure (tolerance ±0.01mm) is located at the center of the left end of the interface module 4. It is fitted with the adapter module slot 16 with a clearance (0.02mm~0.05mm) to connect the external optical fiber to the internal optical path of the interface module 4. Through precise fit, it ensures that the optical fiber sleeve axis deviation is ≤0.05mm, thus ensuring stable transmission of optical signals.

[0053] Interface module 4: The right-end movable part has a rectangular structure. The outer wall is equipped with a T-shaped slider 6 and the upper and lower ends are equipped with trapezoidal fixing blocks 5. It is used to adapt to different types of fiber optic interfaces (SC / LC / ST / FC / MPO, etc.). The interface can be quickly replaced by plugging and unplugging with the fixing component 1.

[0054] Trapezoidal fixing block 5: The interface module 4 is symmetrically distributed at the top and bottom ends. The outer side is an L-shaped block with a 30° inclined surface. It is inserted and matched with the fixing groove 10. The inclined surface guides and automatically corrects the tilt deviation within ±2°, so that the contact area is ≥80% and the first-level locking is achieved.

[0055] T-shaped slider 6: The interface module 4 is symmetrically distributed on the left and right sides of the outer wall. The T-shaped protrusion structure (7.98mm ± 0.01mm wide) slides with the T-shaped slide rail groove 9. The rigid guide limits the lateral deviation to ≤0.05mm, ensuring the straightness of the installation and preventing the module from falling off.

[0056] Cylindrical block 7: The left end of the T-shaped slider 6, a cylindrical block (5mm in diameter), with a positioning hole 8 at the end, serves as the carrier for the positioning hole 8, and transmits the axial positioning accuracy of the positioning pin 14 to the interface module 4;

[0057] Positioning hole 8: The center of the end face of the cylindrical block 7 has a stepped hole (matching the shape of the positioning pin 14 and the elastic element 13). It is fitted with the positioning pin 14 using H7 / g6 and achieves axial positioning (error ≤ 0.03mm) through insertion. It also forms radial preload with the elastic element 13.

[0058] T-shaped slide rail groove 9: The rectangular groove 11 is symmetrically distributed on the left and right side walls, with a T-shaped cross-section groove (width 8mm±0.02mm). The inner wall is fitted with a wear-resistant strip 12, which slides with the T-shaped slider 6 to provide rigid guidance and withstand radial force, ensuring the stability of the module installation trajectory.

[0059] Fixed groove 10: On the upper and lower side walls adjacent to the T-shaped slide rail groove 9, there is a rectangular groove that is inserted and matched with the trapezoidal fixed block 5. The groove body limits the first-level locking and provides the basic positioning for the second-level locking.

[0060] Rectangular slot 11: The right end of fixed component 1, an open rectangular slot (size matching interface module 4), provides installation space for interface module 4, restricts the lateral displacement of the module through the side wall of the slot, and is the basic carrier for connection;

[0061] Wear-resistant strip 12: The inner wall of the T-shaped slide rail groove 9 is fully covered by a polytetrafluoroethylene strip (thickness 0.5mm, Ra≤1.6μm), which reduces the coefficient of friction with the T-shaped slider 6, controls the sliding resistance to ≤3N, and reduces insertion and extraction wear;

[0062] Elastic component 13: The top of the positioning pin 14 is a mushroom-shaped silicone part (head diameter 3mm). When inserted into the positioning hole 8, it is squeezed and deformed and then reset, forming a radial preload of 1.5N~2N and making a "click" sound, providing feedback for installation in place;

[0063] Positioning pin 14: A cylindrical metal pin (2mm in diameter) is placed near the end of the inner bottom surface of the T-shaped slide rail groove 9. It is inserted into the positioning hole 8 to rigidly position and limit the axial error to ≤0.03mm, providing a reference for optical axis alignment.

[0064] Fixed groove 2 15: The inner sidewalls of fixed groove 1 10 are symmetrically distributed with rectangular grooves, which are interference fit with rectangular slider 20 (0.05mm). Through insertion, a total locking force of ≥12N is formed, which limits axial movement to ≤0.01mm and realizes secondary locking.

[0065] Adapter module slot 16: Rectangular groove in the center of the bottom surface of rectangular slot 11, rectangular groove (tolerance ±0.01mm), with clearance fit (0.02mm~0.05mm) with interface adapter module 3, guides the module insertion and ensures that the optical fiber sleeve axis deviation ≤0.05mm;

[0066] Rectangular slide rail groove 17: Rectangular through holes 21 are symmetrically distributed relative to the inner wall, and rectangular grooves (2mm wide) slide with the protrusions of rectangular slider 20 to guide the slider to move in a straight line and ensure accurate insertion into the fixing groove 2 15;

[0067] Movable block 18: Rectangular sliders 20 are symmetrically distributed on both sides. The rectangular block (5mm long) is connected to a spring 19 at one end to evenly transmit the spring force to the rectangular slider 20 and avoid force deviation.

[0068] Spring 19: A cylindrical helical spring (0.5mm wire diameter, 1.2N / mm stiffness) is horizontally arranged on one side of the inner wall of the rectangular slide rail groove 17. When compressed by 5mm, it generates a thrust of 6N, which pushes the rectangular slider 20 into the fixed groove 15. It is the power source for the secondary locking.

[0069] Rectangular slider 20: In the middle of the rectangular through hole 21, there is a rectangular block (8mm long) with protrusions on both sides that cooperate with the rectangular slide rail groove 17. Under the push of the spring 19, it is inserted into the fixing groove 15 and the two-stage locking is achieved through interference fit.

[0070] Rectangular through hole 21: The trapezoidal fixing block 5 has a horizontal through hole (15mm long × 8mm wide) to provide installation space for spring 19, movable block 18 and rectangular slider 20, ensuring a compact layout of the locking components.

[0071] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A multi-interface compatible fiber optic adapter comprising a fixed assembly (1) and an interface module (4), characterized in that: The interface module (4) is located at the right end of the fixed component (1); The fixed component (1) has an optical fiber through hole (2) on the left end and a rectangular groove (11) on the right end. The bottom surface of the rectangular groove (11) has an adapter module groove (16). T-shaped slide rail grooves (9) are provided on the opposite side walls inside the rectangular groove (11). The T-shaped slide rail groove (9) has a fixing groove 1 (10) on the adjacent side wall, and a fixing groove 2 (15) is symmetrically opened on the opposite side wall inside the fixing groove 1 (10). The outer wall of the interface module (4) is fixedly connected to a T-shaped slider (6) that is slidably connected to the T-shaped slide rail groove (9). A cylindrical block (7) is fixedly connected to the left end of the T-shaped slider (6). An interface adapter module (3) that is inserted into the adapter module groove (16) is fixedly connected to the left end of the interface module (4). The interface module (4) has trapezoidal fixing blocks (5) that are inserted into the fixing slot (10) at both ends. The trapezoidal fixing blocks (5) have rectangular through holes (21) inside, and two rectangular slide rail grooves (17) are opened on the inner wall opposite to the rectangular through holes (21).

2. A multi-interface compatible fiber optic adapter according to claim 1, wherein: Wear-resistant strips (12) are fixedly installed on the inner wall of the T-shaped slide rail groove (9), and the sliding fit clearance between the T-shaped slide rail groove (9) and the T-shaped slider (6) is 0.02mm~0.05mm.

3. A multi-interface compatible fiber optic adapter according to claim 2, wherein: The cylindrical block (7) has a positioning hole (8) that is inserted and engaged with the positioning pin (14) and the elastic element (13), and the elastic element (13) and the positioning hole (8) are interference fit to form a radial preload of 1.5N~2N.

4. A multi-interface compatible fiber optic adapter according to claim 3, wherein: T-shaped slide rail grooves (9) are symmetrically opened on opposite side walls of the rectangular groove (11), and a positioning pin (14) is fixedly connected to the inner bottom surface. A mushroom-shaped elastic element (13) is fixedly connected to the positioning pin (14).

5. A multi-interface compatible fiber optic adapter according to claim 4, wherein: The trapezoidal fixing block (5) has a slope angle of 30° and a contact area with the inner wall of the fixing groove (10) of ≥80%; In this case, a rectangular slider (20) is provided in each rectangular through hole (21) opened in the trapezoidal fixing block (5).

6. A multi-interface compatible fiber optic adapter according to claim 5, wherein: The interference fit between the rectangular slider (20) and the second fixing groove (15) is 0.05mm, and the total locking force formed by the symmetrical rectangular sliders (20) is ≥12N.

7. A multi-interface compatible fiber optic adapter according to claim 5, wherein: A spring (19) is fixedly installed on one side of the inner wall of the rectangular slide rail groove (17), and a movable block (18) is connected to one end of the spring (19). A rectangular slider (20) that is inserted into the fixed slot (15) is fixedly connected to the movable block (18), and the movable block (18) is symmetrical about the rectangular slider (20).

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