LC fiber optic connector with easy polarity change

Abstract

The utility model discloses a kind of LC fiber optic connectors of convenient replacement polarity, it is related to optical fiber communication technical field, LC fiber optic connector includes connector, with opposite plug-in end and insertion end, inner frame combination, including upper inner frame and lower inner frame, insertion section is inserted in the cavity formed by upper inner frame and lower inner frame butt joint, first elastic clamping block is set in the both sides of inner frame combination, outer sleeve is sleeved in the outer portion of inner frame combination, sliding long hole is opened in the both sides wall of outer sleeve, first elastic clamping block is slidably arranged in sliding long hole, when first elastic clamping block is pressed inwards, drive inner frame combination and the connector fixedly connected with it as a whole and outer sleeve are unbuckled and separate, and after rotating 180 °, reinsert outer sleeve, realize clamping fixed through the cooperation of first elastic clamping block and sliding long hole, to change the polarity direction of plug-in end, to realize polarity conversion without tool in high-density wiring environment can be done by hand, greatly improve operating efficiency and convenience.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber communication technology, and in particular to an LC optical fiber connector with easily replaceable polarity. Background Technology

[0002] In fiber optic network systems, ensuring correct signal matching (i.e., correct polarity) at both ends of the optical link is fundamental to data transmission. LC connectors, due to their compact size, are widely used in high-density patch panels, optical modules, and other applications. However, it is precisely in these extremely space-constrained environments that changing link polarity becomes exceptionally difficult. Common polarity replacement solutions in existing technologies typically require completely removing the connector from the adapter and using tools to partially disassemble, reassemble, or replace the polarity key. This process is cumbersome, inefficient, and carries the risk of damaging precision ferrules or increasing fiber bending loss. Furthermore, locating and manipulating specific connectors in dense cable bundles is inconvenient and can easily interfere with adjacent normal links.

[0003] Therefore, existing LC fiber optic connectors suffer from problems such as inconvenience in polarity switching operations in high-density environments, low efficiency, easy damage to components, and interference with adjacent lines; there is an urgent need for a fiber optic connector solution that can quickly and reliably complete polarity switching in a limited space without tools or disassembly. Utility Model Content

[0004] The main purpose of this invention is to provide an LC fiber optic connector with convenient polarity replacement, aiming to solve the problem of not being able to quickly and reliably complete polarity conversion within a limited space.

[0005] To achieve the above objectives, this utility model proposes an LC fiber optic connector with easily interchangeable polarities, the LC fiber optic connector comprising:

[0006] The connector has opposing ferrule ends and plug ends;

[0007] The inner frame assembly includes an upper inner frame and a lower inner frame. The insertion segment is inserted into the cavity formed by the upper inner frame and the lower inner frame. The inner frame assembly is provided with first elastic locking blocks on both sides.

[0008] An outer sleeve is fitted over the inner frame assembly. Sliding elongated holes are provided on both sides of the outer sleeve. The first elastic locking block is slidably disposed in the sliding elongated holes so that the inner frame assembly and the connector fixed thereto can move back and forth inside the outer sleeve as a whole.

[0009] When the first elastic block is pressed inward, it drives the inner frame assembly and the connector fixed thereto to release the buckle from the outer casing as a whole and separate them. After rotating 180°, it is reinserted into the outer casing. The engagement and fixation are achieved through the cooperation of the first elastic block and the sliding elongated hole, thereby changing the polarity direction of the insert end.

[0010] The beneficial effects of this utility model are as follows: Through the unique sliding elongated hole and the first elastic locking block cooperation structure between the inner frame assembly and the outer jacket, the entire connector and the inner frame assembly can be easily separated from the outer jacket as a whole, rotated 180° and quickly reinstalled, thereby realizing the polarity conversion without tools in high-density wiring environments, greatly improving the efficiency and convenience of operation; at the same time, this structure ensures that the connector can maintain stable mechanical connection and optical docking performance before and after rotation and resetting, effectively avoiding the problem of damage to the ferrule end or decreased connection stability caused by frequent polarity changes, and combining ease of operation and reliability. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of 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 only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0012] Figure 1 This is a three-dimensional structural diagram of the LC fiber optic connector in this utility model;

[0013] Figure 2 This is an exploded view of the LC fiber optic connector in this utility model;

[0014] Figure 3 This is a cross-sectional view of the LC fiber optic connector in this utility model;

[0015] Figure 4 This is a schematic diagram of the LC fiber optic connector in this utility model;

[0016] Figure 5 This is a three-dimensional structural diagram of the connector in this utility model;

[0017] Figure 6 This is a three-dimensional structural diagram of the outer casing in this utility model.

[0018] Label Explanation:

[0019] 1. Connector; 11. Front sleeve; 111. Unlocking arm; 1111. Limiting shaft; 12. Rear sleeve; 13. Pressing assembly; 14. Insert end; 15. Plug end;

[0020] 2. Inner frame assembly; 21. Upper inner frame; 22. Lower inner frame; 23. First elastic clip;

[0021] 3. Outer casing; 31. Sliding elongated hole; 32. Locking position; 33. First elastic plate; 331. Mounting block; 34. Second elastic plate; 35. Guide slope;

[0022] 4. Tail sleeve; 41. Second elastic locking block;

[0023] 5. Stop components;

[0024] 6. Pressed parts;

[0025] 7. Dust cover.

[0026] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0029] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if the word "and / or" appears throughout the text, it means including three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0030] This utility model provides an LC fiber optic connector with easily interchangeable polarities. Please refer to [reference needed]. Figures 1-6 The LC fiber optic connector includes a connector head 1 with opposing ferrule ends 14 and plug ends 15, an inner frame assembly 2 including an upper inner frame 21 and a lower inner frame 22, the plug end being inserted into the cavity formed by the mating of the upper inner frame 21 and the lower inner frame 22, first elastic locking blocks 23 being provided on both sides of the inner frame assembly 2, and an outer sleeve 3 being fitted over the inner frame assembly 2. Sliding elongated holes 31 are provided on both side walls of the outer sleeve 3, and the first elastic locking blocks 23 are slidably disposed within the sliding elongated holes 31, so that the inner frame assembly 2 and the connector head 1 fixed thereto can... To allow the entire assembly to move back and forth within the outer casing 3, when the first elastic locking block 23 is pressed inward, it causes the inner frame assembly 2 and the connector 1 that is plugged in and fixed thereto to release the latch from the outer casing 3 as a whole and separate. After rotating 180°, it is reinserted into the outer casing 3. The engagement and fixation are achieved through the cooperation of the first elastic locking block 23 and the sliding elongated hole 31, thereby changing the polarity direction of the ferrule end 14. The above design enables the polarity conversion to be completed by hand without tools in a high-density wiring environment, greatly improving the efficiency and convenience of operation.

[0031] In this embodiment, please refer to Figure 3 The connector 1 includes a front sleeve 11, a rear sleeve 12, and a pressing component 13 disposed between the front sleeve 11 and the rear sleeve 12. The pressing component 13 is provided with a reset element, and the front sleeve 11 is provided with a flow guiding structure to prevent the reset element from getting stuck. The above design effectively eliminates the risk of misalignment or jamming caused by the air cushion effect or foreign object intrusion when the reset element in the pressing component 13 is activated, ensuring that the connector unlocking and reset actions are smooth, reliable, and consistent, thereby improving the operating feel and enhancing the long-term durability of the product.

[0032] It should be noted that the pressing component 13 and the reset component are existing technologies. They are mainly used to prevent the pressing component 13 from getting stuck during reset, reduce manual secondary operation, and make it easy to use.

[0033] In this embodiment, please refer to Figure 3 , Figure 5 and Figure 6 The front sleeve 11 is provided with two elastic unlocking arms 111, and the outer sleeve 3 is provided with an elastic plate. The end of the elastic plate away from the front sleeve 11 is provided with two guide slopes 35 that cooperate with the ends of the two elastic unlocking arms 111. The above-mentioned efficient force transmission mechanism can, when the outer sleeve 3 is subjected to a rearward axial force, compress the end of the corresponding unlocking arm 111, convert the axial tension into radial inward pressure, and drive the unlocking arm 111 to produce radial inward displacement, thereby unlocking the adapter sleeved outside the connector 1 from the connector 1.

[0034] Specifically, the end of the elastic unlocking arm 111 away from the front sleeve 11 is provided with a limiting shaft 1111. The axis of the limiting shaft 1111 is perpendicular to the axis of the connector 1, and the limiting shaft 1111 is located directly above the top of the front sleeve 11. The elastic plate includes a first elastic plate 33 and a second elastic plate 34. One end of the first elastic plate 33 is fixed to one end of the top of the outer sleeve 3, and the other end is located above the other end of the top of the outer sleeve 3. The end of the first elastic plate 33 suspended above the top of the outer sleeve 3 is provided with a notch groove to accommodate the end of the second elastic plate 34. The two groove walls of the notch groove are arranged opposite each other and each is provided with a mounting block 331. The two mounting blocks 331 are provided with the aforementioned guide slope 35 facing the top of the outer sleeve 3. One end of the second elastic plate 34 is fixed to the top of the outer sleeve 3. The connection point between the outer sleeve 3 and the inner sleeve 3 is far from the connection point between the first elastic plate 33 and the outer sleeve 3. The other end of the second elastic plate 34 is located in the notch groove. On both sides of the end of the second elastic plate 34 located in the notch groove, there are other mounting blocks 331 that cooperate with the mounting block 331 of the first elastic plate 33. The mounting block 331 is also provided with the aforementioned guide slope 35. Specifically, the two ends of the limiting shaft 1111 are respectively in contact with the guide slope 35 on the first elastic plate 33 and the guide slope 35 on the second elastic plate 34. When the outer sleeve 3 is subjected to a rearward axial force, the two ends of the limiting shaft 1111 are squeezed by the corresponding guide slope 35, which drives the elastic unlocking arm 111 to produce a radial inward displacement, thereby unlocking the adapter sleeved outside the connector 1 from the connector 1.

[0035] The above design utilizes the guide ramps 35 on both sides to simultaneously and evenly press the two ends of the limiting shaft 1111, efficiently and stably converting the axial tension into symmetrical radial inward pressure, thereby precisely driving the two elastic unlocking arms 111 to synchronously generate inward displacement, achieving smooth and reliable unlocking with the adapter. This symmetrical double ramp drive structure effectively avoids the off-center load and jamming that may occur when subjected to force at a single point, significantly improving the smoothness of the action and the durability of the mechanism.

[0036] In another embodiment, the front sleeve 11 is provided with an elastic unlocking arm 111. When the end of the elastic unlocking arm 111 away from the front sleeve 11 is subjected to a vertical external force, such as a finger pressing, the unlocking arm 111 can also generate a radial inward displacement, thereby unlocking the adapter sleeved outside the connector 1 from the connector 1.

[0037] It should be noted that, in this embodiment, the adapter is a flange.

[0038] In this embodiment, please refer to Figure 2 and Figure 4The inner frame assembly 2 also has a stop 5 inside the cavity. The stop 5 is located behind the insertion end 15 of the connector 1 and is used to axially limit the optical fiber inserted into the cavity to ensure that the connector 1 maintains the optical fiber alignment accuracy during polarity reversal and insertion / removal. The LC fiber connector also includes a pressing component 6, which is connected to the stop 5 and is used to press and fix the optical cable between the pressing component 6 and the stop 5, absorb external mechanical stress, and prevent it from being transmitted to the internal optical fiber. Thus, while realizing rapid polarity conversion and various unlocking operations, it ensures the overall mechanical stability and optical reliability of the LC fiber connector.

[0039] In this embodiment, please refer to Figure 1 and Figure 4 The LC fiber optic connector also includes a tail sleeve 4. The tail sleeve 4 has second elastic locking blocks 41 on both sides. The outer sleeve 3 has locking positions 32 for the second elastic locking blocks 41 to engage. When the second elastic locking blocks 41 are pressed inward, they drive the tail sleeve 4 to quickly separate from the outer sleeve 3, greatly simplifying operation and making the tail sleeve 4 easy to install and remove. Furthermore, the tail sleeve 4 is fixed to the outer sleeve 3 by the second elastic locking blocks 41 on both sides, allowing the user to directly pull the tail sleeve 4 backward to apply a backward axial pulling force to the outer sleeve 3. This pulling force is further converted into radial pressure on the unlocking arm 111 of the front sleeve 11 through the guide slope 35 at the front end of the outer sleeve 3, thereby unlocking the adapter. Clearly, the tail sleeve 4 can convert external pulling force into an effective internal unlocking action in a high-density space. It can also be quickly separated during maintenance by pressing the second elastic locking blocks 41, comprehensively enhancing the overall performance of the fiber optic connector in terms of ease of operation, space adaptability, and maintenance efficiency.

[0040] In this embodiment, the LC fiber optic connector also includes a dust cover 7, which is sleeved on the outside of the ferrule 14 of the connector 1 to provide protection and prevent the ferrule 14 from getting dirty and affecting the signal.

[0041] For instructions on operating this LC fiber optic connector, please refer to [link / reference]. Figures 1-6When using this LC fiber optic connector, firstly, by pushing the LC fiber optic connector forward or pulling the tail sleeve 4 directly backward, the axial tension transmitted from the tail sleeve 4 to the outer sleeve 3, and the cooperation between the guide slope 35 at the front end of the outer sleeve 3 and the limiting shaft 1111, the axial movement is converted into radial pressure, driving the elastic unlocking arm 111 of the front sleeve 11 to move inward, thereby achieving quick installation or unlocking with the flange. When it is necessary to change the polarity, with the LC fiber optic connector and adapter separated, press the first elastic locking blocks 23 on both sides of the inner frame assembly 2 inward, so that the connector 1 and the inner frame assembly 2 as a whole are disengaged from the outer sleeve 3. After rotating 180°, reinsert it into the outer sleeve 3 and achieve a snap-fit ​​fixation through the cooperation of the first elastic locking block 23 and the sliding elongated hole 31, thus completing the polarity conversion. In addition, during maintenance, the tail sleeve 4 and the outer sleeve 3 can be quickly separated by pressing the second elastic locking blocks 41 on both sides of the tail sleeve 4, which is convenient for fiber optic cable termination or internal maintenance. The whole process can be completed by hand without tools, which significantly improves the operating efficiency and convenience in high-density cabling environments.

[0042] The above description is only an optional embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. An LC fiber optic connector with easily interchangeable polarity, characterized in that, The LC fiber optic connector includes: The connector has opposing ferrule ends and plug ends; The inner frame assembly includes an upper inner frame and a lower inner frame. The insertion end is inserted into the cavity formed by the upper inner frame and the lower inner frame. The inner frame assembly is provided with first elastic locking blocks on both sides. An outer sleeve is fitted over the inner frame assembly. Sliding elongated holes are provided on both sides of the outer sleeve. The first elastic locking block is slidably disposed in the sliding elongated holes so that the inner frame assembly and the connector fixed thereto can move back and forth inside the outer sleeve as a whole. When the first elastic block is pressed inward, it drives the inner frame assembly and the connector fixed thereto to release the buckle from the outer casing as a whole and separate them. After rotating 180°, it is reinserted into the outer casing. The engagement and fixation are achieved through the cooperation of the first elastic block and the sliding elongated hole, thereby changing the polarity direction of the insert end.

2. The LC fiber optic connector according to claim 1, characterized in that, The connector includes a front sleeve, a rear sleeve, and a pressing component disposed between the front sleeve and the rear sleeve.

3. The LC fiber optic connector according to claim 2, characterized in that, The front sleeve is provided with two elastic unlocking arms, and the outer sleeve is provided with an elastic plate. The end of the elastic plate away from the front sleeve is provided with two guide slopes that cooperate with the ends of the two elastic unlocking arms. When the outer sleeve is subjected to a rearward axial force, the guide ramp can squeeze the end of the corresponding unlocking arm, causing the unlocking arm to produce a radially inward displacement, thereby unlocking the adapter sleeved outside the connector from the connector.

4. The LC fiber optic connector according to claim 2, characterized in that, The front sleeve is provided with an elastic unlocking arm. When the end of the elastic unlocking arm away from the front sleeve is subjected to a vertical external force, the unlocking arm can generate a radial inward displacement, thereby unlocking the adapter sleeved outside the connector from the connector.

5. The LC fiber optic connector according to claim 1, characterized in that, The cavity of the inner frame assembly is also provided with a stop, which is located behind the insertion end of the connector and is used to axially limit the optical fiber inserted into the cavity.

6. The LC fiber optic connector according to claim 5, characterized in that, The LC fiber optic connector also includes a pressing component connected to the stop component for pressing and fixing the optical cable located between the pressing component and the stop component.

7. The LC fiber optic connector according to claim 1, characterized in that, The LC fiber optic connector also includes a tail sleeve, on both sides of which are provided second elastic locking blocks. The outer sleeve is provided with locking positions for the second elastic locking blocks to engage. When the second elastic locking blocks are pressed inward, the tail sleeve is driven to quickly separate from the outer sleeve.

8. The LC fiber optic connector according to claim 2, characterized in that, The pressing component is provided with a reset element; The front sleeve is provided with a flow guiding structure to prevent the reset component from getting stuck.

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