A high-cleanliness MPO adapter dust cap and dustproof structure MPO optical fiber connector

Abstract

This utility model discloses a high-cleanliness MPO adapter dust cap and a dustproof structure MPO fiber optic connector, relating to the field of fiber optic technology. The utility model includes a connector body, an adapter body fixedly mounted on one side of the connector body, a ferrule fixedly mounted inside the adapter body, a locking claw fixedly mounted inside the adapter body, a guide pin fixedly mounted inside the adapter body, a recessed area inside the dust cap body, and a cavity formed in the inner wall of the dust cap body, the cavity being filled with soft colloid. The dust cap body is inserted into the adapter body, effectively sealing the ferrule inside the adapter body. This ensures that the ferrule will not be affected by condensation due to changes in external temperature and humidity, and will not detach due to thermal expansion and contraction of the dust cap body or various vibrations under high temperature or heat conditions, thus preventing the ferrule from losing protection.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber technology, specifically to an MPO fiber optic connector with a high-cleanliness MPO adapter dust cap and a dustproof structure. Background Technology

[0002] MPO fiber optic connectors are a type of fiber optic connector. MPO (Multi Push On) is a multi-core fiber optic connector type adopted by IEEE standards as a connector type for 40G / 100G transmission, and selected by the structured cabling design standards ISO / IEC 24764 and ANSI / TIA-568-C as a connector type supporting transmission with two or more fiber cores. MPO high-density fiber optic pre-connection systems are currently mainly used in three areas: high-density environments in data centers, fiber-to-the-building applications, and internal connections in optical transceivers such as splitters, 40G, 100G, 400G, 800G, and QSFP+.

[0003] The biggest problem facing MPO fiber optic connectors right now is the contamination of the MT ferrule end face. When external contaminants adhere to the MT ferrule end face, they will directly affect the various performance characteristics of the MPO fiber optic connector, resulting in a reduction in the transmission efficiency between the optical fibers within the MPO fiber optic connector.

[0004] Currently, most MPO fiber optic connectors on the market use non-contact caps for their dust caps. With this type of cap, the area above the MT ferrule is a non-sealed cavity. During transportation, changes in external temperature and humidity can easily allow moisture to accumulate, causing moisture to build up on the MT ferrule surface as well, affecting fiber transmission efficiency. Furthermore, in high-temperature environments, the expansion and contraction of the dust cap can cause it to detach, thus compromising protection of the MT ferrule surface. This is especially problematic for rack-mounted MPO fiber optic modules and MPO optical modules, which contain multi-core fibers and MT ferrules fixed inside the module by the MPO adapter. The external end of the MPO adapter uses a cap-type dust cap, which easily leads to secondary contamination of the MT ferrule surface. Once contaminated, this contamination is difficult or impossible to clean, severely impacting the optical performance of the entire link. To address these issues, the inventors propose a high-cleanliness MPO adapter dust cap and a dustproof structure for the MPO fiber optic connector to solve these problems. Utility Model Content

[0005] To address the problem of dirt accumulation on the MT ferrule end face of MPO fiber optic connectors, the purpose of this invention is to provide a high-cleanliness MPO adapter dust cap and a dustproof structure for the MPO fiber optic connector.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a dustproof MPO fiber optic connector, including a connector body, an adapter body fixedly provided on one side of the connector body, a ferrule fixedly provided inside the adapter body, a claw fixedly provided inside the adapter body, and a guide pin fixedly provided inside the adapter body.

[0007] This utility model also provides a high-cleanliness MPO adapter dust cap for an MPO fiber optic connector with a dustproof structure, including a dust cap body. The dust cap body has a recessed area, and its inner wall has a cavity filled with a soft rubber material. A circular hole is formed within the soft rubber material. An arc-shaped groove is formed on the outer wall of the dust cap body, and an arc-shaped protrusion is fixedly provided on the outer surface of the dust cap body. A through hole is formed within the dust cap body, and a spring clip is fixedly installed within the through hole. The dust cap body can be inserted into the adapter body, and the soft rubber material connects to the ferrule end. The dust cap body is tightly fitted, with the guide pins movably inserted into the round holes and the claws movably engaged in the through holes. First, the dust cap body is inserted into the adapter body, and then the arc-shaped groove, arc-shaped protrusion, through hole position, and spring sheet structure of the dust cap body cooperate with the claws on both sides of the adapter body to form a snap-fit ​​structure. This effectively prevents the dust cap body from coming out of the adapter body due to the expansion of the soft rubber body at high temperature or vibration. The soft rubber body fits tightly with the core end, sealing the core end and preventing dust and water vapor. The two round holes opened in the soft rubber body prevent the two guide pins of the connector body from being exposed.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0009] 1. By connecting the dust cap body to the adapter body, the plug end inside the adapter body is effectively sealed, thus ensuring that the plug end will not be affected by the condensation of water vapor due to changes in the external temperature and humidity environment, and will not fall off due to the thermal expansion and contraction of the dust cap body or various vibrations in high temperature and high heat environments, resulting in the plug end losing protection.

[0010] It effectively solves the problem that the end face of the built-in ferrule of MPO optical module products is easily contaminated by secondary pollution and is difficult or impossible to wipe after contamination. It further ensures accurate docking of optical fiber with the matching optical path, and can be stably and reliably plugged into the optical fiber, thereby improving the optical signal transmission performance and saving a lot of subsequent maintenance costs.

[0011] 2. The soft rubber at the front of the dust cap is fully fitted to the ferrule of the built-in MPO optical module, forming a seal on the ferrule. The snap-fit ​​structure effectively prevents the dust cap from coming off the adapter body, further improving the cleanliness of the connector body and thus ensuring its stability. Attached Figure Description

[0012] 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 these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the connector body structure of this utility model;

[0014] Figure 2 This is a partial cross-sectional view of the connector body of this utility model;

[0015] Figure 3 This is a schematic diagram of the adapter body structure of this utility model;

[0016] Figure 4 This is a schematic diagram of the dust cap body structure of this utility model;

[0017] Figure 5 This is a partial cross-sectional view of the dust cap body of this utility model.

[0018] In the diagram: 1. Dust cap body; 11. Recess; 12. Soft rubber body; 121. Round hole; 13. Arc-shaped groove; 14. Cavity; 15. Arc-shaped protrusion; 16. Through hole; 17. Spring piece; 2. Connector body; 21. Adapter body; 22. Plug end; 23. Claw; 24. Guide pin. Detailed Implementation

[0019] 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.

[0020] Example: Figure 1-5 As shown, this utility model provides a dustproof MPO fiber optic connector, including a connector body 2, an adapter body 21 fixedly disposed on one side of the connector body 2, a ferrule 22 fixedly disposed inside the adapter body 21, a claw 23 fixedly disposed inside the adapter body 21, and a guide pin 24 fixedly disposed inside the adapter body 21.

[0021] This utility model also provides a high-cleanliness MPO adapter dust cap for an MPO fiber optic connector with a dustproof structure, including a dust cap body 1. The dust cap body 1 has a recess 11 inside, and a cavity 14 on its inner wall. The cavity 14 is filled with a soft gel 12, and a circular hole 121 is formed inside the soft gel 12. An arc-shaped groove 13 is formed on the outer wall of the dust cap body 1, and an arc-shaped protrusion 15 is fixedly provided on the outer surface of the dust cap body 1. A through hole 16 is formed inside the dust cap body 1, and a spring piece 17 is fixedly installed inside the through hole 16. The dust cap body 1 can be inserted into an adapter body 21. The soft gel 12 is tightly fitted to the ferrule end 22. The guide pin 24 is movably inserted into the circular hole 121, and the claw 23 is movably engaged in the through hole 16.

[0022] By adopting the above technical solution (connector body 2 is an MPO fiber optic connector, adapter body 21 is an MPO adapter, and ferrule end 22 is an MT ferrule end face), a 4mm deep cavity 14 is opened at the front end of the dust cap body 1 to fill the soft rubber 12. The through hole 16 facilitates product injection molding, simplifies the mold structure, improves product quality, and thus improves production efficiency. The arc-shaped groove 13, arc-shaped protrusion 15, through hole 16, and spring piece 17 structure of the dust cap body 1 cooperate with the claws 23 on both sides of the adapter body 21 to form a snap-fit ​​structure, which can effectively prevent the dust cap body 1 from falling out of the adapter body 21 due to the expansion of the soft rubber 12 at high temperature or vibration. The soft rubber 12 fits tightly with the ferrule end 22, sealing the ferrule end 22 and preventing dust and water vapor. The two round holes 121 opened in the soft rubber 12 prevent the two guide pins 24 of the connector body 2 from being exposed.

[0023] Working principle: First, the dust cap body 1 is inserted into the adapter body 21. Then, the arc-shaped groove 13, arc-shaped protrusion 15, through hole 16 and spring piece 17 of the dust cap body 1 cooperate with the two side claws 23 of the adapter body 21 to form a snap-fit ​​structure. This can effectively prevent the dust cap body 1 from coming out of the adapter body 21 due to the expansion of the soft rubber body 12 at high temperature or vibration. The soft rubber body 12 fits tightly with the plug end 22, sealing the plug end 22 and preventing dust and water vapor. The two round holes 121 opened in the soft rubber body 12 prevent the two guide pins 24 of the connector body 2 from being exposed.

[0024] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the optical fiber connection adopts conventional connection methods in the prior art, which will not be described in detail here.

[0025] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A dustproof MPO fiber optic connector, comprising a connector body (2), characterized in that: An adapter body (21) is fixedly provided on one side of the connector body (2), a ferrule end (22) is fixed inside the adapter body (21), a claw (23) is fixed inside the adapter body (21), and a guide pin (24) is fixed inside the adapter body (21).

2. A high-cleanliness MPO adapter dust cap for use in the dustproof structure of the MPO fiber optic connector according to claim 1, comprising a dust cap body (1), characterized in that, The dust cap body (1) has a recess (11) inside, and the inner wall of the dust cap body (1) has a cavity (14) filled with a soft gel (12), and the soft gel (12) has a round hole (121).

3. The high-cleanliness MPO adapter dust cap for an MPO fiber optic connector with a dustproof structure as described in claim 2, characterized in that, The outer wall of the dust cap body (1) is provided with an arc-shaped groove (13), the outer surface of the dust cap body (1) is fixedly provided with an arc-shaped protrusion (15), the dust cap body (1) is provided with a through hole (16), and a spring piece (17) is fixedly provided in the through hole (16).

4. The high-cleanliness MPO adapter dust cap for an MPO fiber optic connector with a dustproof structure as described in claim 3, characterized in that, The dust cap body (1) can be inserted into the adapter body (21), and the soft rubber body (12) is tightly fitted with the insert end (22).

5. The high-cleanliness MPO adapter dust cap for an MPO fiber optic connector with a dustproof structure as described in claim 4, characterized in that, The guide pin (24) is movably inserted into the round hole (121), and the claw (23) is movably locked into the through hole (16).

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