LC polarization-maintaining connector

Abstract

The utility model discloses an LC polarization-maintaining connecting port, and relates to the field of polarization-maintaining connectors, the LC polarization-maintaining connecting port comprises a shell main body and a protective sleeve, the upper top end of the shell main body is fixedly connected with an abutting plate and an elastic plate, the abutting plate and the elastic plate are oppositely arranged, and the end part of the elastic plate abuts against the lower bottom end of the abutting plate; according to the invention, the variable-pitch assembly is arranged, a long screw is used as a main force transmission part and is matched with a second fixing plate, a sliding plate is driven to move up and down through the long screw, and a guide groove arranged outside the second fixing plate is matched with a guide rod, so that the distance between the long screw and the second fixing plate can be adjusted, and the distance between the long screw and the second fixing plate can be adjusted. When the position of the sliding plate is changed, the sliding plate drags a guide rod through a guide groove, at the moment, the distance between the protective sleeve and the shell main body is further reduced, and the protective sleeve and the shell main body are gradually close to each other, so that the connectivity between the protective sleeve and the shell main body can be improved, and the situation that the protective sleeve falls off in the using process is avoided.

Description

Technical Field

[0001] This application relates to the field of polarization-maintaining connectors, and particularly to an LC polarization-maintaining connection port. Background Art

[0002] The LC polarization-maintaining connector is a key component widely used in the field of optical communication. It is mainly used to ensure that the polarization state of polarized light can be maintained when two polarization-maintaining optical fibers are coupled, so as to maintain a high extinction ratio for transmission. This connector plays a crucial role in optical communication systems, especially in application scenarios with extremely high requirements for the polarization state.

[0003] In the existing field of optical communication, as a key component, the stability and reliability of the LC polarization-maintaining connector are crucial for ensuring the high-quality transmission of optical signals. However, traditional LC polarization-maintaining connectors often have some deficiencies in structural design, especially in dealing with the connection tightness between the end of the polarization-maintaining connector and the protective shell. The existing technology often directly adopts a flexible connection. When facing external environmental changes or wear during long-term use, it is easy to cause the connection to loosen, which may further lead to the risk of the protective sleeve falling off or the optical fiber being damaged. Once the connection between the protective sleeve and the end of the polarization-maintaining connector fails, it will not only affect the transmission quality of optical signals but also may cause faults in the entire communication system, bringing unnecessary losses to users. Summary of the Utility Model

[0004] In order to solve the problem that in dealing with the connection tightness between the end of the polarization-maintaining connector and the protective shell, the existing technology often directly adopts a flexible connection. When

[0005] facing external environmental changes or wear during long-term use, it is easy to cause the connection to loosen, which may further lead to the risk of the protective sleeve falling off or the optical fiber being damaged, this application provides an LC polarization-maintaining connection port.

[0006] An LC polarization-maintaining connection port provided by this application adopts the following technical solution:

[0007] An LC polarization-maintaining connection port includes a housing main body and a protective sleeve. Abutting plates and elastic plates are respectively fixedly connected to the upper top end of the housing main body, and the abutting plates and the elastic plates are arranged oppositely. The end of the elastic plate abuts against the lower bottom end of the abutting plate. An access terminal is fixedly connected to the end of the housing main body. A torque-changing component for restricting the position of the protective sleeve is arranged on the outer side wall of the housing main body.

[0008] Preferably, the torque conversion component includes extension frames symmetrically and fixedly connected to the outer wall of the protective sleeve. Guide rods are fixedly connected to the outer wall of the housing main body and the ends of the extension frames respectively. A clamping groove is formed on the outer wall of the guide rod. A sliding plate is sleeved on the outer walls of the two guide rods. Guide grooves are symmetrically formed on the outer wall of the sliding plate, and the guide grooves are slidably connected to the guide rods. A second fixing plate is fixedly connected to the middle of the outer side wall of the sliding plate. First fixing plates are symmetrically and fixedly connected to the outer side wall of the housing main body. A long screw is rotatably connected to the upper end of the first fixing plate.

[0009] Preferably, the long screw is threadedly connected to the second fixing plate. A flexible guiding strip is fixedly connected to the inner side wall of the sliding plate located in the guide groove. A clamping groove is formed on the outer wall of the guide rod. The flexible guiding strip is clamped inside the clamping groove.

[0010] Preferably, flexible guiding sliders are fixedly connected to both sides of the outer side wall of the sliding plate where the second fixing plate is located. Guide frames slidably connected to the flexible guiding sliders are fixedly connected to both sides of the outer side wall of the housing main body where the long screw is located.

[0011] Preferably, an optical fiber conduit is arranged inside the protective sleeve. An optical fiber main body inserted into the access terminal is arranged inside the optical fiber conduit. A protective flannelette for protection is wound around the connection part of the access terminal and the optical fiber conduit.

[0012] Preferably, the protective sleeve wraps around the outer wall of the access terminal, and the end of the protective sleeve fits with the end of the housing main body.

[0013] Preferably, the two guide grooves are in a long strip arc shape, and the tops of the two guide grooves are close to each other.

[0014] In summary, the present application includes at least one of the following beneficial technical effects:

[0015] By providing a torque conversion component, during use, the long screw is used as the main force transmission part and cooperates with the second fixing plate. The long screw drives the sliding plate to move up and down. The guide groove arranged outside the second fixing plate cooperates with the guide rod. When the position of the sliding plate changes, it will affect the guide rod through the guide groove. At this time, the distance between the protective sleeve and the housing main body will be further reduced and they will gradually approach. In this way, the connection between the protective sleeve and the housing main body can be increased, and the situation of falling off during use can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an LC polarization-maintaining connection port according to an embodiment of the present application;

[0017] Figure 2This is a schematic diagram mainly showing the partial dissection structure of the protective sleeve in the embodiment of the present application;

[0018] Figure 3 This is a schematic diagram mainly showing the housing main body structure in the embodiment of the present application;

[0019] Figure 4 This is a schematic diagram mainly showing the variable pitch component structure in the embodiment of the present application;

[0020] Figure 5 This is a schematic diagram mainly showing the sliding plate structure in the embodiment of the present application.

[0021] Reference numerals: 1, housing main body; 11, abutting plate; 12, elastic plate; 13, access terminal; 14, protective fluff sleeve; 2, protective sleeve; 21, optical fiber conduit; 22, extension bracket; 23, optical fiber main body; 3, sliding plate; 31, guide rod; 311, card slot; 32, first fixing plate; 33, guide frame; 34, long screw; 35, guide groove; 351, flexible guide strip; 36, flexible guide slider; 37, second fixing plate. Detailed implementation manners

[0022] The following will Figure 1 - Figure 5 make a further detailed description of the present application.

[0023] The embodiment of the present application discloses an LC polarization maintaining connection port.

[0024] Embodiment 1

[0025] Referring to Figure 1 and Figure 2 , an LC polarization maintaining connection port includes a housing main body 1 and a protective sleeve 2. An abutting plate 11 and an elastic plate 12 are respectively fixedly connected to the upper top end of the housing main body 1, and the abutting plate 11 and the elastic plate 12 are arranged oppositely. The end of the elastic plate 12 abuts against the lower bottom end of the abutting plate 11. An access terminal 13 is fixedly connected to the end of the housing main body 1. A variable pitch component for restricting the position of the protective sleeve 2 is arranged on the outer side wall of the housing main body 1.

[0026] With the above scheme, an abutting plate 11 and an elastic plate 12 are arranged at the top of the housing main body 1 of the LC polarization maintaining connection port. The two are arranged oppositely and the end of the elastic plate 12 lightly touches the bottom of the abutting plate 11, which not only enhances the structural strength of the connection port, but also endows it with self-adaptive ability. During the connection process, the elastic plate 12 can automatically adjust to adapt to interfaces of different sizes, ensure a tight and gapless connection, effectively resist vibration and external force interference, and greatly extend the service life of the connection port.

[0027] Referring to Figure 3 , Figure 4 and Figure 5The torque converter assembly includes an extension frame 22 symmetrically fixedly connected to the outer wall of the protective sleeve 2, the outer wall of the shell body 1 and the end of the extension frame 22 are fixedly connected with a guide rod 31, the outer wall of the guide rod 31 is provided with a card slot 311, the outer walls of the two guide rods 31 are sleeved with a sliding plate 3, the outer wall of the sliding plate 3 is symmetrically provided with a guide groove 35, and the guide groove 35 is slidably connected to the guide rod 31, and the middle part of the outer wall of the sliding plate 3 is fixedly connected with a second fixing plate 37, the outer wall of the shell body 1 is symmetrically fixedly connected with a first fixing plate 32, the upper top of the first fixing plate 32 is rotatably connected with a long screw 34, and the long screw 34 is threadedly connected to the second fixing plate 37, the inner side wall of the sliding plate 3 located in the guide groove 35 is fixedly connected with a flexible guide strip 351, the outer wall of the guide rod 31 is provided with a card slot 311, and the flexible guide strip 351 is carded inside the card slot 311.

[0028] By adopting the above scheme, the torque converter assembly realizes precise control of the position of the protective sleeve 2 through the coordinated action of the extension frame 22, the guide rod 31, the sliding plate 3 and other components. The user can easily adjust the position of the sliding plate 3 on the guide rod 31 according to the actual connection requirements, thereby changing the distance between the protective sleeve 2 and the shell body 1 to ensure the precise docking of the optical fiber connection. The close cooperation between the long screw 34 and the second fixing plate 37 provides a stable support for the sliding plate 3, effectively preventing the occurrence of displacement or loosening, and ensuring the long-term stable operation of the connection port. The flexible guide strip 351 on the inner side of the sliding plate 3 is perfectly matched with the card groove 311 on the outer wall of the guide rod 31. This design not only reduces the friction and noise during the sliding process, but also effectively protects the guide rod 31 from wear through the buffering effect of the flexible guide strip 351. At the same time, the locking mechanism of the card groove 311 ensures the stability of the flexible guide strip 351 during the sliding process, prevents accidental falling off, and further improves the safety and reliability of the connection port.

[0029] Reference Figure 3 and Figure 4 The outer wall of the sliding plate 3 is located on both sides of the second fixed plate 37 and is fixedly connected with a flexible guide slider 36, and the outer wall of the shell body 1 is located on both sides of the long screw 34 and is fixedly connected with a guide frame 33 slidably connected to the flexible guide slider 36.

[0030] By adopting the above scheme, the flexible guide slider 36 and the guide frame 33 work synergistically on the outside of the sliding plate 3, and the flexible guide slider 36 is closely matched with the guide frame 33 on the shell body 1 to form another stable support system. The flexible guide slider 36 can slide smoothly along the guide frame 33, and can maintain a precise moving trajectory even in complex environments, avoiding connection problems caused by offset or shaking.

[0031] Reference Figure 1 and Figure 2, inside the protective sleeve 2, there is an optical fiber conduit 21 arranged. Inside the optical fiber conduit 21, there is an optical fiber main body 23 inserted into the inside of the access terminal 13. At the connection between the access terminal 13 and the optical fiber conduit 21, there is a protective fleece sleeve 14 wound for protection. The protective sleeve 2 wraps around the outer wall of the access terminal 13, and the end of the protective sleeve 2 fits with the end of the housing main body 1. The two guiding grooves 35 are in a long arc shape, and the tops of the two guiding grooves 35 are close to each other.

[0032] With the above solution, the optical fiber main body 23 is carefully arranged inside the optical fiber conduit 21 and tightly wound around the connection between the access terminal 13 and the optical fiber conduit 21 through the protective fleece sleeve 14, which not only effectively isolates the optical fiber main body 23 from the external environment but also ensures the stable transmission of optical fiber signals. The protective sleeve 2 tightly wraps around the outer wall of the access terminal 13 and is seamlessly docked with the housing main body 1, further enhancing the connection tightness and stability, improving the transmission efficiency and quality. The long arc shape design of the guiding grooves 35 is not only beautiful but also realizes the precise guiding and limiting of the sliding plate 3 in terms of function. The design that the tops of the two guiding grooves 35 are close to each other enables the sliding plate 3 to naturally fit the outer wall of the guiding rod 31 during movement, reducing unnecessary friction and resistance.

[0033] The implementation principle of an LC polarization-maintaining connection port in an embodiment of this application is as follows: When in use, the user can insert the optical fiber main body 23 into the inside of the access terminal 13, and then set the protective fleece sleeve 14 at the connection between the protective fleece sleeve 14 and the optical fiber main body 23 to achieve the purpose of protecting the optical fiber main body 23. In order to increase the protection effect on the access terminal 13 and the optical fiber main body 23, it is necessary to move the protective sleeve 2 to the end of the access terminal 13 and form protection for it by extrusion. In order to avoid the situation that the protective sleeve 2 will fall off during use, the user can align the flexible guiding strip 351 opened on the outer wall of the sliding plate 3 with the guiding rod 31 and then insert it. During this process, the flexible guiding strip 351 and the flexible guiding slider 36 will be squeezed until the flexible guiding strip 351 is clamped into the inside of the card slot 311 and the flexible guiding slider 36 is clamped into the inside of the guiding frame 33. At this time, the user can cooperate the screwdriver with the long screw 34 to drive the long screw 34 to rotate. When the long screw 34 rotates, it will cooperate with the second fixing plate 37 and drive the sliding plate 3 to move up and down. The guiding groove 35 arranged outside the second fixing plate 37 cooperates with the guiding rod 31. When the position of the sliding plate 3 changes, it will involve the guiding rod 31 through the guiding groove 35. At this time, the distance between the protective sleeve 2 and the housing main body 1 will be further reduced and gradually approach. Through this method, the connection between the protective sleeve 2 and the housing main body 1 can be increased, avoiding the situation of falling off during use.

[0034] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.

Claims

1. An LC polarization-maintaining connector, characterized in that: The invention comprises a shell body (1) and a protective sleeve (2), wherein the upper top of the shell body (1) is fixedly connected to an abutment plate (11) and an elastic plate (12), respectively, and the abutment plate (11) and the elastic plate (12) are arranged opposite to each other, and the end of the elastic plate (12) abuts against the lower bottom of the abutment plate (11), the end of the shell body (1) is fixedly connected to an access terminal (13), and the outer side wall of the shell body (1) is provided with a torque conversion component for limiting the position of the protective sleeve (2).

2. The LC polarization-maintaining connector according to claim 1, characterized in that: The torque conversion assembly comprises an extension frame (22) symmetrically fixedly connected to the outer wall of the protective sleeve (2); the outer wall of the shell body (1) and the end of the extension frame (22) are both fixedly connected with a guide rod (31); the outer wall of the guide rod (31) is provided with a slot (311); the outer walls of the two guide rods (31) are sleeved with a sliding plate (3); the outer walls of the sliding plates (3) are symmetrically provided with guide grooves (35), and the guide grooves (35) are slidably connected to the guide rods (31); the middle part of the outer wall of the sliding plate (3) is fixedly connected with a second fixing plate (37); the outer wall of the shell body (1) is symmetrically fixedly connected with a first fixing plate (32); the upper top of the first fixing plate (32) is rotatably connected with a long screw (34).

3. The LC polarization-maintaining connector according to claim 2, characterized in that: The long screw (34) is threadedly connected to the second fixing plate (37); the inner side wall of the sliding plate (3) located in the guide groove (35) is fixedly connected with a flexible guide strip (351); the outer wall of the guide rod (31) is provided with a clamping groove (311); and the flexible guide strip (351) is clamped inside the clamping groove (311).

4. The LC polarization-maintaining connector according to claim 3, characterized in that: The outer wall of the sliding plate (3) is located on both sides of the second fixed plate (37) and is fixedly connected to a flexible guide slider (36), and the outer wall of the shell body (1) is located on both sides of the long screw (34) and is fixedly connected to a guide frame (33) slidably connected to the flexible guide slider (36).

5. The LC polarization-maintaining connector according to claim 4, characterized in that: An optical fiber tube (21) is arranged inside the protective sleeve (2), an optical fiber body (23) inserted into the access terminal (13) is arranged inside the optical fiber tube (21), and a protective fleece sleeve (14) is wrapped around the connection between the access terminal (13) and the optical fiber tube (21) for protection.

6. The LC polarization-maintaining connector according to claim 5, characterized in that: The protective sleeve (2) is wrapped around the outer wall of the access terminal (13), and the end of the protective sleeve (2) is in contact with the end of the housing body (1).

7. The LC polarization-maintaining connector according to claim 6, characterized in that: The two guide grooves (35) are in the shape of long arcs, and the top ends of the two guide grooves (35) are close to each other.

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