Anti-loose MPO buckle

Abstract

The utility model relates to a kind of anti-loosening MPO buckles, belong to MPO buckle technical field.The anti-loosening MPO buckle includes: adapter, plug, sleeve, limit frame, hinge and limit frame, two the side of the limit frame mutually close side along the two side surfaces of the plug slide and embed the two side interiors of the plug;Sleeve inner wall annular anti-skid line, and with the initial pre-tightening force formed to plug surface, the V-shaped guide slot of limit frame along the two sides of plug slide, limit frame is embedded plug with interference fit, form first level mechanical lock, hinge drives limit frame reverse rotation, terminal insertion limit frame, by stainless steel interference fit realizes secondary interlock, the annular inner wall of limit frame is wrapped plug outer wall, surface plating hard chromium layer reduces plug abrasion, form three levels of wrapping constraint, the design is through material stiffness optimization, three levels of locking structure and self-adapting gap compensation, realize not easy to loosen under wide temperature environment, applicable to base station high frequency plug-in scene.

Description

Technical Field

[0001] This utility model relates to the field of MPO buckle technology, and in particular to an MPO buckle that prevents loosening. Background Technology

[0002] The MPO (fiber optic connector) consists of an outer shell, an inner shell, and a fiber optic patch cord. The inner shell is fitted onto the fiber optic patch cord, while the outer shell is movably fitted onto the inner shell. Both the rear ends of the outer shell and the inner shell have annular protrusions. When the outer shell moves along its length on the inner shell, a groove is formed between the rear ends of the outer shell and the rear ends of the inner shell. When the MPO is inserted into the adapter of the optical module, the outer shell of the MPO will block the adapter's latch to prevent the adapter's latch from popping out, thus avoiding abnormal positioning of the fiber optic patch cord and affecting performance.

[0003] In actual use, especially when the fiber optic patch cord is long, the weight of the fiber optic patch cord can easily cause the adapter's clips to loosen from the MPO. Utility Model Content

[0004] Therefore, it is necessary to provide an MPO clip that prevents loosening, addressing the problem that the fiber optic patch cord has a certain weight, which can easily cause the adapter clip to loosen from the MPO.

[0005] An anti-loosening MPO buckle includes: an adapter, wherein a plurality of plugs are electrically connected to one side of the adapter, and a sleeve is slidably fitted on the surface of each of the plurality of plugs, and the sleeve is fixed to the outer wall of one side of the adapter;

[0006] The limiting bracket is provided in two, and the two limiting brackets are respectively located on both sides of the sleeve. The side of the two limiting brackets that are close to each other slides along the two side surfaces of the plug and is embedded in the two side interiors of the plug.

[0007] The limiting frame is provided in two parts, and each of the two limiting frames is provided with a hinge between one side and the limiting frame.

[0008] In one embodiment, a fixing block is fixedly connected to one side of the sleeve, and one side of the fixing block is fixed to the outer wall of one side of the adapter by bolts.

[0009] In one embodiment, slots are provided on both sides of the plug, and one end of each of the two limiting brackets is fixedly connected to a locking block, with the two locking blocks respectively embedded in the slots on both sides of the plug.

[0010] In one embodiment, the interior of both limiting frames is annular, and the inner walls of both limiting frames are fitted to the outer walls on both sides of the plug.

[0011] In one embodiment, the two limiting frames are hinged in opposite directions to the two limiting brackets, and a second limiting groove is provided on one side of the outer wall of each of the two limiting brackets. The hinge is located on one side of the second limiting groove, and the two limiting frames rotate on one side of the two second limiting grooves respectively.

[0012] In one embodiment, a first limiting groove is provided on the side of each of the two limiting frames that are far apart from each other, and a limiting buckle is fixedly connected to one side of the two limiting frames according to the hinge. Some of the limiting buckles are inserted into the interior of the first limiting groove and are engaged with the outer wall of the limiting frame.

[0013] In one embodiment, after the two limiting frames are attached to the surface of the plug, the outer horizontal plane of the sleeve is equal to the horizontal plane of the limiting frames.

[0014] In one embodiment, there is a certain gap between one side of the limiting frame and the sleeve, and anti-slip texture is formed on the outer wall surface of one side of the limiting frame.

[0015] Beneficial effects

[0016] 1. When the plug is inserted into the adapter, the sleeve is rigidly connected to the adapter. The inner wall of the sleeve has an annular anti-slip texture and forms an initial pre-tightening force with the plug surface. The V-shaped guide groove of the limit frame slides along both sides of the plug. The limit frame is embedded into the plug with an interference fit to form a first-level mechanical lock. The hinge drives the limit frame to rotate in the opposite direction and inserts the end into the limit frame. The second-level interlock is achieved through a stainless steel interference fit. At the same time, the annular inner wall of the limit frame wraps around the outer wall of the plug. The surface is plated with a hard chrome layer to reduce insertion and removal wear, forming a third-level wrapping constraint. This design, through material stiffness optimization, a three-level locking structure and adaptive gap compensation, makes it less prone to loosening in a wide temperature environment and is suitable for high-frequency insertion and removal scenarios in base stations.

[0017] 2. The two limiting frames and the limiting bracket adopt a reverse hinge design, with the hinge axis at an angle to the plug axis to ensure that a reverse constraint force is generated during vibration. The hinge is embedded in the groove through phosphor bronze spring pieces to provide a self-resetting function. The two limiting frames can rotate in the second limiting groove. The end limiting buckle is made of stainless steel and is inserted into the first limiting groove through interference fit to form a mechanical interlock. This structure, through the reverse hinge + double limiting groove design, enables the buckle to form a bidirectional constraint in the X / Y axis direction. With the trapezoidal embedding of the buckle block, it achieves three-level anti-loosening: first-level sleeve pre-tightening, second-level buckle locking, and third-level limiting buckle interlocking. The axial displacement of the plug is small, which is suitable for the high reliability connection requirements of base stations. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the plug structure of this utility model;

[0021] Figure 3 This is a schematic diagram of the sleeve structure of this utility model;

[0022] Figure 4 This is a schematic diagram of the opening and closing structure of the limiting frame of this utility model;

[0023] Figure 5 This is an enlarged view of the side cross-sectional structure of the limiting frame of this utility model.

[0024] Figure label:

[0025] 100, Adapter; 200, Plug; 201, Slot; 300, Sleeve; 301, Fixing Block; 400, Limiting Frame; 401, Slot Block; 402, First Limiting Slot; 403, Second Limiting Slot; 500, Hinge; 600, Limiting Frame; 601, Limiting Buckle. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0027] The following is combined with Figure 1 - Figure 5 This invention describes an MPO buckle designed to prevent loosening.

[0028] In one embodiment, an anti-loosening MPO buckle includes: an adapter 100, a limiting bracket 400, and a limiting frame 600. A plurality of plugs 200 are electrically plugged into one side of the adapter 100. A sleeve 300 is slidably fitted onto the surface of each of the plurality of plugs 200. The sleeve 300 is fixed to the outer wall of one side of the adapter 100. Two limiting brackets 400 are provided, and the two limiting brackets 400 are respectively located on both sides of the sleeve 300. The sides of the two limiting brackets 400 that are close to each other slide along the two side surfaces of the plugs 200 and are embedded in the two side interiors of the plugs 200. Two limiting frames 600 are provided, and a hinge 500 is provided between one side of the two limiting frames 600 and the limiting bracket 400.

[0029] In this embodiment, the adapter 100 is injection molded from PPS engineering plastic with a nickel-plated surface for rust prevention. A standard LC-type plug cavity is provided on one side. The plug 200 is a fiber optic plug with an anodized surface. The sliding sleeve 300 is made of stainless steel with annular anti-slip texture on its inner wall. The two limiting frames 400 are symmetrical L-shaped structures, CNC machined, with V-shaped guide grooves on their adjacent sides to embed into the positioning holes on both sides of the plug 200. The limiting frame 600 is connected to the limiting frame 400 via hinges 500 made of phosphor bronze. The opening and closing angle ensures that the limiting frame 600 can adapt to the tolerance range of the plug 200. This structure, through the double limiting frames 400 forming a mechanical lock, combined with the pre-tightening force of the sleeve 300, minimizes the risk of the plug 200 loosening under vibration, making it suitable for high-reliability fiber optic connection scenarios between base stations and data centers.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, a fixing block 301 is fixedly connected to one side of the sleeve 300. One side of the fixing block 301 is fixed to the outer wall of one side of the adapter 100 by bolts. The plug 200 has slots 201 on both sides. One end of the two limit frames 400 is fixedly connected to a block 401. The two blocks 401 are respectively embedded in the slots 201 on both sides of the plug 200. The interior of the two limit frames 600 is annular, and the inner walls of the two limit frames 600 are in contact with the outer walls on both sides of the plug 200.

[0031] In this embodiment, a fixing block 301 is fixedly connected to one side of the sleeve 300. The fixing block 301 is made of stainless steel and its surface is bluing to prevent rust. One side is fixed to the side wall of the adapter 100 by an M3 hexagonal bolt to ensure the connection rigidity between the sleeve 300 and the adapter 100.

[0032] The slots 201 on both sides of the plug 200 are trapezoidal in structure. The locking blocks 401 fixed at one end of the two limiting frames 400 are inserted into the slots 201 with an interference fit. The surface of the locking blocks 401 is provided with annular anti-slip texture to prevent slippage during vibration. The interior of the two limiting frames 600 is a precision stamped annular structure with the inner wall fitting the outer wall of the plug 200. The surface is treated with hard chrome plating to reduce wear during insertion and removal. The pre-tightening force of the sleeve 300 is strengthened by the fixing block 301. Combined with the mechanical locking of the locking blocks 401 inserted into the slots 201 and the annular wrapping of the limiting frames 600, a triple anti-loosening mechanism is formed, which keeps the plug 200 with minimal displacement in a vibration environment. This is suitable for the high-frequency fiber optic connection requirements of base stations.

[0033] like Figure 2 , Figure 3 and Figure 4 As shown, the two limiting frames 600 are hinged in opposite directions to the two limiting brackets 400. Each of the two limiting brackets 400 has a second limiting groove 403 on one side of its outer wall. The hinge 500 is located on one side of the second limiting groove 403. The two limiting frames 600 rotate on one side of the two second limiting grooves 403 respectively. Each of the two limiting brackets 400 has a first limiting groove 402 on the side that is far away from each other. The two limiting frames 600 are fixedly connected to a limiting buckle 601 on one side of the hinge 500. One end of the limiting buckle 601 is inserted into the interior of the first limiting groove 402 and engages with the outer wall of the limiting bracket 400.

[0034] In this embodiment, the two limiting frames 600 and the limiting frame 400 adopt a reverse hinge design. The axis of the hinge 500 is at an angle to the axis of the plug 200 to ensure that a reverse constraint force is generated during vibration. The hinge 500 is embedded in the groove through a phosphor bronze spring to provide a self-resetting function. The two limiting frames 600 can rotate in the second limiting groove 403. The end limiting buckle 601 is made of stainless steel and is inserted into the first limiting groove 402 through an interference fit to form a mechanical interlock.

[0035] This structure, through a reverse hinge and double limit groove design, enables the buckle to form a bidirectional constraint in the X / Y axis direction. Combined with the trapezoidal embedding of the buckle block 401, it achieves three-level anti-loosening: the first level is pre-tightened by the sleeve 300, the second level is locked by the buckle block 401, and the third level is interlocked by the limit buckle 601. The axial displacement of the plug 200 is small, making it suitable for the high-reliability connection requirements of base stations.

[0036] like Figure 2 , Figure 4 and Figure 5 As shown, after the two limiting frames 600 are attached to the surface of the plug 200, the outer horizontal plane of the sleeve 300 is equal to the horizontal plane of the limiting frame 600. There is a certain gap between one side of the limiting frame 600 and the sleeve 300. Anti-slip texture is provided on the outer wall surface of one side of the limiting frame 600.

[0037] In this embodiment, after the two limiting frames 600 are attached to the surface of the plug 200, the outer horizontal plane of the sleeve 300 is equal to the horizontal plane of the limiting frame 600, ensuring structural compactness and avoiding local stress concentration.

[0038] A gap is maintained between one side of the limiting frame 600 and the sleeve 300, which allows for thermal expansion buffering and restrains vibration displacement through annular wrapping. The outer wall of the limiting frame 600 is laser-engraved to form a diamond-shaped anti-slip texture, which works in conjunction with the annular anti-slip texture of the sleeve 300 to form a double friction lock under vibration conditions. Combined with the mechanical interlock of the limiting buckle 601, the axial displacement of the plug 200 is small, which is suitable for the high reliability connection requirements of base stations.

[0039] Working principle: When plug 200 is inserted into adapter 100, sleeve 300 is rigidly connected to adapter 100 through stainless steel fixing block 301. The inner wall of sleeve 300 has annular anti-slip texture and forms an initial pre-tightening force with the surface of plug 200. The V-shaped guide groove of limit bracket 400 slides along both sides of plug 200. The locking block 401 is inserted into trapezoidal locking groove 201 with interference fit to form a first-level mechanical locking.

[0040] The hinge 500 drives the limiting frame 600 to rotate in the opposite direction, and the end limiting buckle 601 is inserted into the first limiting groove 402. The two-level interlock is achieved through the stainless steel interference fit. At the same time, the annular inner wall of the limiting frame 600 wraps the outer wall of the plug 200, and the surface is plated with a hard chrome layer to reduce insertion and removal wear, forming a three-level wrapping constraint.

[0041] This design, through material stiffness optimization, a three-level locking structure, and adaptive gap compensation, ensures that the parts are not easily loosened in a wide temperature range and is suitable for high-frequency insertion and removal scenarios in base stations.

[0042] It should be noted that the adapter 100 mentioned above is a device with relatively mature existing technology. The specific model can be selected according to actual needs. The adapter 100 can be powered by its built-in power supply or by AC power. The specific power supply method should be selected according to the situation, and will not be elaborated here.

[0043] The above 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 will 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.

Claims

1. An MPO buckle for preventing loosening, characterized in that, include: An adapter (100) has multiple plugs (200) electrically connected to one side of it. Each of the multiple plugs (200) has a sleeve (300) slidably fitted on its surface. The sleeve (300) is fixed to the outer wall of one side of the adapter (100). Two limiting brackets (400) are provided, and the two limiting brackets (400) are respectively located on both sides of the sleeve (300). The side of the two limiting brackets (400) that are close to each other slides along the two side surfaces of the plug (200) and is embedded in the two side interiors of the plug (200). Two limiting frames (600) are provided, and each of the two limiting frames (600) is provided with a hinge (500) between one side of the limiting frame (400).

2. The anti-loosening MPO buckle according to claim 1, characterized in that, A fixing block (301) is fixedly connected to one side of the sleeve (300), and one side of the fixing block (301) is fixed to the outer wall of one side of the adapter (100) by bolts.

3. The anti-loosening MPO buckle according to claim 1, characterized in that, The plug (200) has slots (201) on both sides, and one end of each of the two limiting brackets (400) is fixedly connected to a block (401). The two blocks (401) are respectively embedded in the slots (201) on both sides of the plug (200).

4. The anti-loosening MPO buckle according to claim 1, characterized in that, Both of the limiting frames (600) have annular interiors, and the inner walls of both limiting frames (600) are in contact with the outer walls of both sides of the plug (200).

5. The anti-loosening MPO buckle according to claim 4, characterized in that, The two limiting frames (600) are hinged in opposite directions to the two limiting brackets (400). Each of the two limiting brackets (400) has a second limiting groove (403) on one side of its outer wall. The hinge (500) is located on one side of the second limiting groove (403). The two limiting frames (600) rotate on one side of the two second limiting grooves (403).

6. The anti-loosening MPO buckle according to claim 5, characterized in that, Each of the two limiting frames (400) has a first limiting groove (402) on the side that is far apart from each other. The two limiting frames (600) are fixedly connected to a limiting buckle (601) on one side of the hinge (500). One end of the limiting buckle (601) is inserted into the first limiting groove (402) and engaged with the outer wall of the limiting frame (400).

7. The anti-loosening MPO buckle according to claim 4, characterized in that, After the two limiting frames (600) are attached to the surface of the plug (200), the outer horizontal plane of the sleeve (300) is equal to the horizontal plane of the limiting frame (600).

8. The anti-loosening MPO buckle according to claim 7, characterized in that, There is a certain gap between one side of the limiting frame (600) and the sleeve (300), and anti-slip texture is provided on the outer wall surface of one side of the limiting frame (600).

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