Dustproof coupling device for quick-change fiber optic connectors

Abstract

This utility model discloses a dustproof coupling device for a quick-replaceable fiber optic connector, belonging to the field of optical connector technology. It includes: a housing with a through-channel for accommodating the optical fiber; an outer shell rotatably connected to the outside of the housing, with a spring between the bottom and top of the outer shell; and a guide assembly detachably connected to the front side of the through-channel of the housing. In this utility model, through the designed guide assembly, when the optical fiber is inserted into the guide assembly from the rear end of the housing, the optical fiber can move into the guide cover through the guidance of the peripheral tension plates. The conical guide cover reduces the loss of the optical fiber through-channel. After the optical fiber passes through the card slot through-hole, it can enter the ceramic sleeve. The guide guides the optical signal into the ceramic ferrule. Multiple circumferentially designed tension plates abut and position the optical fiber around its periphery, improving the efficiency of quick replacement and positioning.

Description

Technical Field

[0001] This utility model belongs to the field of optical connector technology, and in particular relates to a dustproof coupling device for a quick-replaceable fiber optic connector. Background Technology

[0002] FC square fiber optic adapters are primarily used for connecting and securing fiber optic connectors, enabling optical signals to be transmitted with minimal insertion loss. Precision ceramic sleeves are used to accurately align the connector ferrules, ensuring ultra-low loss transmission of optical signals after the connectors are connected.

[0003] Chinese utility model patent CN209624834U discloses an optical fiber connector, including a protective shell, an inner cavity, a matching fluid, a cable sheath, an optical fiber core, a ceramic ferrule, and a sealing device. The inner cavity is located inside the protective shell, and its outer surface is bonded to the inner wall of the protective shell with adhesive. A V-groove is formed at the axial position of the inner cavity. By providing a dustproof baffle for optical fiber insertion on the plug, and a telescopic spring that maintains elastic contact with the dustproof baffle, the dustproof baffle is pushed open when the optical fiber plug is inserted, and automatically returns to its original position under the action of the telescopic spring to block the through hole when the optical fiber plug is removed, thus preventing dust from entering the optical fiber connector. However, in actual use, the lack of guidance when the optical fiber is inserted into the shell, and the resulting misalignment during insertion, can easily lead to wear of the optical fiber end due to contact with the wall, indicating room for improvement. Utility Model Content

[0004] The purpose of this invention is to solve the problem that when optical fibers are inserted into the housing, the lack of guidance and the contact between the fiber end and the wall when the fiber is misaligned during insertion can easily lead to wear of the fiber end. Therefore, this invention proposes a dustproof coupling device for quick-replaceable optical fiber connectors.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a quick-replaceable fiber optic connector dustproof coupling device, comprising: a housing having a through-channel for accommodating optical fibers; an outer shell rotatably connected to the outside of the housing, with a spring provided between the bottom and top of the outer shell; a guide assembly detachably connected to the front side of the through-channel of the housing; and a ceramic ferrule connected inside the through-channel of the housing.

[0006] As a further description of the above technical solution:

[0007] The guiding assembly includes a guiding cover and a guiding ring. Multiple connecting blocks are connected around the opposite surfaces of the guiding cover and the guiding ring along the axis, and a tension plate is integrally connected between adjacent connecting blocks.

[0008] As a further description of the above technical solution:

[0009] The guide cover has a conical cross-sectional shape, and the tension plate has a convex cross-sectional shape. The conical guide cover reduces the contact angle between the inner side of the guide cover and the end face of the optical fiber, thereby improving the stability of the guided insertion.

[0010] As a further description of the above technical solution:

[0011] One end of the guide cover is connected to a ferrule, and the outer periphery of the ferrule is provided with multiple protrusions. One side of the housing through-channel is connected to a card seat, and the inner cavity of the card seat is provided with multiple card slots around the axis. The ferrule is embedded in the card seat through the protrusions. Through the designed ferrule and card slots, the guide component can be easily and quickly moved out and replaced from the through-channel side of the housing, which can improve the replacement efficiency.

[0012] As a further description of the above technical solution:

[0013] A stabilizing rib is connected between multiple circumferential connecting blocks. The stabilizing rib is an elastic component, and the elastic stabilizing rib can improve the guiding stability of the inserted optical fiber.

[0014] As a further description of the above technical solution:

[0015] Multiple tension ribs are connected between the opposite surfaces of the two connecting blocks. The tension ribs are elastic components. The tension ribs can use their own tension to maintain the energy absorption and buffering effect of the two connecting blocks and improve the lateral transmission of impact on both sides.

[0016] As a further description of the above technical solution:

[0017] The ceramic insert is fitted with a dust cover, which is a magnetic cover.

[0018] As a further description of the above technical solution:

[0019] An ultraviolet-curable adhesive layer is embedded between the end of the through-channel of the housing and the ceramic ferrule. The ultraviolet-curable adhesive layer fixes the bare fiber and reduces insertion loss.

[0020] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0021] 1. In this utility model, through the designed guiding component, when the optical fiber is inserted into the guiding component from the rear end of the housing, the optical fiber can move into the guiding cover through the guidance of the peripheral tension plate. The conical guidance of the guiding cover can reduce the loss of the optical fiber through the channel. After the optical fiber passes through the through hole of the card slot, it can enter the ceramic sleeve. The optical signal is guided into the ceramic ferrule through the guide. Through the multiple tension plates with a peripheral design, the tension plates abut and position the optical fiber around the periphery, improving the efficiency of quick replacement and positioning.

[0022] 2. In this utility model, the designed stabilizing rib ring can improve the energy absorption and buffering effect of multiple tension plates on the periphery through the lateral support force of the stabilizing rib ring. In addition, the tension rib can absorb the buffering of the connecting blocks on both sides, which facilitates the improvement of the guiding effect of the optical fiber. If the optical fiber is deviated and pulled after insertion, the stabilizing rib ring and tension rib can absorb the pulling force from the tail of the optical fiber, thereby improving the stability of the optical fiber insertion connection. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of a quick-replaceable fiber optic connector dustproof coupling device proposed in this utility model.

[0024] Figure 2 This is a schematic diagram showing the disassembled structure of a quick-replaceable fiber optic connector dustproof coupling device proposed in this utility model.

[0025] Figure 3 This is a side view of the dustproof coupling device for a quick-replaceable fiber optic connector proposed in this utility model.

[0026] Figure 4 This is a schematic diagram of another angle of the dustproof coupling device for a quick-replaceable fiber optic connector proposed in this utility model.

[0027] Figure 5 This is a schematic diagram of the guiding component structure of a quick-replaceable fiber optic connector dustproof coupling device proposed in this utility model.

[0028] Legend: 1. Housing; 2. Outer shell; 3. Spring; 4. Guide assembly; 401. Guide cover; 402. Guide ring; 403. Connecting block; 404. Stabilizing rib ring; 405. Tension plate; 406. Tension rib; 5. Card holder; 6. Card sleeve; 7. Ceramic ferrule; 8. Dust cover. Detailed Implementation

[0029] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0030] Please see Figures 1-5This utility model provides a technical solution: a quick-replaceable fiber optic connector dustproof coupling device, comprising: a housing 1, the housing 1 having a through channel for accommodating optical fibers; an outer shell 2, the outer shell 2 being rotatably connected to the outside of the housing 1, and a spring 3 being provided between the bottom of the outer shell 2 and the top of the housing 1; a guide assembly 4, the guide assembly 4 being detachably connected to the front side of the through channel of the housing 1; and a ceramic ferrule 7, the ceramic ferrule 7 being connected inside the through channel of the housing 1.

[0031] The housing 1 has a ceramic sleeve inside the through channel to ensure that the inserted optical fiber is introduced into the ceramic ferrule 7 with less loss. An ultraviolet curable adhesive layer is embedded between the tail of the through channel of the housing 1 and the ceramic ferrule 7.

[0032] Furthermore, flexible baffles are provided at the tail of housing 1 and the tail of outer shell 2 corresponding to the guide component 4, and the flexible baffles can be slidably connected to one side of housing 1 or outer shell 2 at the corresponding position through sliders and grooves.

[0033] Please see Figure 5 The guiding component 4 includes a guiding cover 401 and a guiding ring 402. Multiple connecting blocks 403 are connected around the opposite surfaces of the guiding cover 401 and the guiding ring 402 along the axis. A tension plate 405 is integrally connected between adjacent connecting blocks 403. The cross-sectional shape of the guiding cover 401 is conical, and the cross-sectional shape of the tension plate 405 is convex. A retainer 6 is connected to one end of the guiding cover 401. Multiple protrusions are provided on the outer periphery of the retainer 6. A retainer 5 is connected to one side of the through channel of the housing 1. Multiple slots are opened around the inner cavity of the retainer 5 along the axis. The retainer 6 is embedded in the retainer 5 through the protrusions.

[0034] Specifically: Through the designed guide component 4, when the optical fiber is inserted into the guide component 4 from the rear end of the housing 1, the optical fiber can move into the guide cover 401 through the guidance of the peripheral tension plate 405. The tapered guidance of the guide cover 401 can reduce the loss of the optical fiber through the channel. After the optical fiber passes through the through hole of the card holder 5, it can enter the ceramic sleeve and guide the optical signal into the ceramic ferrule 7 through the guide. Through the multiple tension plates 405 with a peripheral design, the peripheral side of the optical fiber can be abutted and positioned by the tension plates 405, which improves the efficiency of quick replacement and positioning.

[0035] A stabilizing rib ring 404 is connected between multiple circumferential connecting blocks 403. The stabilizing rib ring 404 is an elastic element. Multiple tension ribs 406 are connected between the opposite surfaces of the two connecting blocks 403. The tension ribs 406 are elastic elements. A dust cover 8 is sleeved on the outside of the ceramic insert 7. The dust cover 8 is a magnetic element.

[0036] Specifically: The designed stabilizing rib 404 can improve the energy absorption and buffering effect of multiple tension plates 405 on the periphery through the lateral support force of the stabilizing rib 404, and the tension rib 406 can absorb the buffering of the connecting blocks 403 on both sides, which facilitates the improvement of the guiding effect of the optical fiber. Furthermore, if the optical fiber is deviated and pulled after insertion, the stabilizing rib 404 and the tension rib 406 can absorb the pulling force from the tail of the optical fiber, thereby improving the stability of the optical fiber insertion connection.

[0037] In this invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; "linking" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A quick changeable dust-proof coupling device for fiber optic connectors, characterized in that, include: Housing (1), housing (1) has a through channel for accommodating optical fibers; The outer shell (2) is rotatably connected to the outside of the housing (1), and a spring (3) is provided between the bottom of the outer shell (2) and the top of the housing (1); A guide assembly (4) is detachably connected to the front side of the through channel of the housing (1); A ceramic insert (7) is connected to the through channel of the housing (1).

2. A dust-proof coupling device for a quick-change fiber connector according to claim 1, characterized in that, The guiding component (4) includes a guiding cover (401) and a guiding ring (402). Multiple connecting blocks (403) are connected around the opposite surfaces of the guiding cover (401) and the guiding ring (402) along the axis. Tension plates (405) are integrally connected between adjacent connecting blocks (403).

3. A dust-proof coupling device for a quick-change fiber connector according to claim 2, characterized in that, The guide cover (401) has a conical cross-sectional shape, and the tension plate (405) has a convex cross-sectional shape.

4. The quick changeable fiber connector dust-proof coupling device according to claim 2, wherein, One end of the guide cover (401) is connected to a sleeve (6), and the outer periphery of the sleeve (6) is provided with multiple protrusions. The housing (1) is connected to a card seat (5) on one side of the through channel. The inner cavity of the card seat (5) is provided with multiple card slots around the axis. The sleeve (6) is embedded in the card seat (5) through the protrusions.

5. The quick changeable fiber connector dust-proof coupling device according to claim 2, wherein, A stabilizing rib (404) is connected between multiple circumferential connecting blocks (403), and the stabilizing rib (404) is an elastic element.

6. A dust-proof coupling device for a quick replaceable fiber connector according to claim 1, wherein, Multiple tension ribs (406) are connected between the opposite surfaces of the two connecting blocks (403), and the tension ribs (406) are elastic components.

7. The quick changeable fiber connector dust-proof coupling device according to claim 1, wherein, The ceramic insert (7) is covered with a dust cover (8), which is a magnetic element.

8. The quick changeable fiber connector dust-proof coupling device according to claim 1, wherein, An ultraviolet-curable adhesive layer is embedded between the end of the through channel of the housing (1) and the ceramic insert (7).

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