Mini waterproof optical fiber connector

Abstract

The utility model discloses a mini waterproof optical fiber connector, which comprises a connector body, a shell assembly, an inner core assembly and a sealing assembly, the shell assembly comprises a sleeve, a non-connecting end of the connector body is provided with a pipe body, the pipe body is slidably arranged in the sleeve, the inner core assembly comprises a plug assembly and a ceramic plug core, and the ceramic plug core is arranged in the sleeve. The plugging assembly is located at one end, far away from the connector body, of the tube body, the plugging assembly is plugged with the tube body, the ceramic ferrule is detachably arranged in the connector body through the plugging assembly, one end, far away from the ceramic ferrule, of the optical fiber cable axially penetrates through the plugging assembly and then extends to the outer side of the end part of the tube body, the sealing assembly comprises a heat-shrinkable tube, and after the heat-shrinkable tube is thermally shrunk, the ceramic ferrule is inserted into the tube body. Wherein one end is hermetically connected with the tube body, the middle part enables the plug-in assembly to be fixedly connected with the tube body, and the other end is hermetically connected with the optical fiber line. The connector is small in outer diameter, simple in structure, few in parts, and efficient and convenient to assemble and process, and is compatible and adaptive to a special waterproof SC adapter and a common SC adapter, so that the universality is improved.

Description

Technical Field

[0001] This utility model relates to the field of optical fiber communication physical connection technology, and in particular to a miniature waterproof optical fiber connector. Background Technology

[0002] Fiber optic connectors are devices that allow for detachable connections between optical fibers, precisely mating the two end faces of the fibers and maximizing the coupling of light energy from the transmitting fiber to the receiving fiber. A large number of fiber optic connectors are widely used for connections between fiber-to-fiber, fiber-to-device, and fiber-to-instrument pairs.

[0003] However, existing waterproof fiber optic connectors have excessively large outer diameters, occupy too much space, can only be used with dedicated waterproof adapters, have low versatility, and are overly complex in structure, making the processing and assembly process cumbersome.

[0004] Therefore, there is a need to develop a miniature waterproof fiber optic connector with a small outer diameter, simple structure, few parts, efficient and convenient assembly and processing, and compatibility with both dedicated waterproof SC adapters and ordinary SC adapters, thereby improving versatility. Utility Model Content

[0005] To solve the above problems, the technical solution adopted by this utility model is as follows:

[0006] A miniature waterproof fiber optic connector includes a connector body, a housing assembly, and an inner core assembly. The housing assembly includes a sleeve, the non-connecting end of the connector body is provided with a tube body, the tube body is slidably disposed within the sleeve, and a limiting boss is provided on the connector body at the end of the sleeve.

[0007] The inner core assembly includes a plug-in assembly and a ceramic ferrule connected to an optical fiber. The plug-in assembly is located at the end of the tube away from the connector body. The plug-in assembly is plugged into the tube body. The ceramic ferrule is detachably disposed in the connector body through the plug-in assembly. The end of the optical fiber away from the ceramic ferrule axially passes through the plug-in assembly and extends to the outer side of the end of the tube body.

[0008] It also includes a sealing assembly, which includes a heat-shrinkable tube disposed between the sleeve and the tube body. After the heat-shrinkable tube is heat-shrinked, one end is sealed to the tube body, the middle part is used to fix the plug-in assembly to the tube body, and the other end extends and is sealed to the optical fiber.

[0009] Preferably, the plug-in assembly includes a plug and a connector. The plug is a T-shaped hollow structure, with one end extending into the tube body and plugging into the tube body, and the other end connected to the end surface of the tube body. One end of the connector is connected to the ceramic ferrule, and the other end extends into the plug. The optical fiber passes through the plug and the connector and then connects to the ceramic ferrule.

[0010] Preferably, an inner limiting ring is provided inside the connecting end of the connector body, the connecting member is connected to the inner limiting ring, and an elastic element is provided inside the connector body between the plug and the connecting member.

[0011] Preferably, an installation groove is provided on the inner side of one end of the heat shrink tube on the sleeve, and the end of the heat shrink tube that connects to the tube body is provided in the installation groove.

[0012] Preferably, the sealing assembly further includes a first seal located between the tube body and the heat shrink tube.

[0013] Preferably, the sealing assembly further includes a second sealing element, which is sleeved on the outside of the limiting boss.

[0014] Preferably, the housing assembly further includes a tail sleeve and a dust cap respectively connected to both ends of the sleeve, the dust cap being fitted onto the connector body and the tail sleeve being fitted onto the heat shrink tubing.

[0015] Preferably, the dust cap is screwed or snapped into the sleeve, and the tail sleeve is screwed or snapped into the sleeve.

[0016] Preferably, the housing assembly further includes a chain belt, the two ends of which are detachably engaged with a dust cap and a tail sleeve, respectively.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] This utility model has a small outer diameter, simple structure, few parts, and is efficient and convenient to assemble and process. It is also compatible with both dedicated waterproof SC adapters and ordinary SC adapters, thus improving its versatility. Attached Figure Description

[0019] Figure 1 This is a three-dimensional exploded view of the present invention;

[0020] Figure 2 This is a schematic diagram of the overall cross-sectional structure of this utility model;

[0021] The components include: connector body 1, outer shell assembly 2, inner core assembly 3, sealing assembly 4, elastic element 5, tube body 11, limiting boss 12, inner limiting ring 13, sleeve 21, tail sleeve 22, dust cap 23, chain belt 24, plug assembly 31, ceramic ferrule 32, heat shrink tube 41, first seal 42, second seal 43, fiber optic cable 100, mounting groove 211, plug 311, and connector 312. Detailed Implementation

[0022] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0023] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," "up," "down," "front," "back," and similar expressions used in this document are for illustrative purposes only.

[0024] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0025] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0026] like Figure 1-2 As shown, a miniature waterproof fiber optic connector includes a connector body 1, a housing assembly 2, and an inner core assembly 3. The housing assembly 2 includes a sleeve 21. The non-connecting end of the connector body 1 is provided with a tube body 11, which is slidably disposed inside the sleeve 21. A limiting boss 12 is provided on the connector body 1 at the end of the sleeve 21.

[0027] The inner core assembly 3 includes a plug-in assembly 31 and a ceramic ferrule 32 connected to the optical fiber 100. The plug-in assembly 31 is located at the end of the tube 11 away from the connector body 1. The plug-in assembly 31 is plugged into the tube 11. The ceramic ferrule 32 is detachably disposed in the connector body 1 through the plug-in assembly 31. The end of the optical fiber 100 away from the ceramic ferrule 32 axially passes through the plug-in assembly 31 and extends to the outer side of the end of the tube 11.

[0028] It also includes a sealing component 4, which includes a heat shrink tube 41 disposed between the sleeve 21 and the tube body 11. After the heat shrink tube 41 is heat-shrinked, one end is sealed to the tube body 11, the middle part is used to fix the insertion component 31 to the tube body 11, and the other end extends and is sealed to the optical fiber 100.

[0029] In this embodiment, the heat shrink tube 41 restricts the axial movement of the plug assembly 31 relative to the tube body 11 after heat shrinking, preventing water from entering the connector body 1 from the connection between the optical fiber 100 and the plug assembly 31 and the tube body 11, thus achieving a sealed and waterproof effect. Furthermore, by cooperating with the limiting boss 12, the axial movement of the tube body 11 relative to the sleeve 21 can be restricted. Compared with the existing technology, which has many components, a complex structure, and cumbersome installation, by optimizing the structure of the connector body 1 and designing the cooperation between the plug assembly 31 and the heat shrink tube 41, waterproof performance is ensured while also achieving the installation cooperation between the ceramic ferrule 32 and the connector body 1 and the sleeve 21.

[0030] In addition, in this embodiment, due to the heat shrinkability of the heat shrink tube 41, it can be adapted to smaller parts, thus effectively reducing the outer diameter of the connector and reducing the space occupied.

[0031] The above structure not only has a small outer diameter, simple structure, few parts, and efficient and convenient assembly and processing, but it is also compatible with both dedicated waterproof SC adapters and ordinary SC adapters, greatly improving its versatility.

[0032] Furthermore, such as Figure 1-2 As shown, the plug-in assembly 31 includes a plug 311 and a connector 312. The plug 311 is a T-shaped hollow structure, with one end extending into the tube 11 and plugging into the tube 11, and the other end connected to the end surface of the tube 11. One end of the connector 312 is connected to the ceramic ferrule 32, and the other end extends into the plug 311. The optical fiber 100 passes through the plug 311 and the connector 312 and then connects to the ceramic ferrule 32.

[0033] In this embodiment, the above structure allows the ceramic ferrule 32 to be stably and coaxially positioned within the connector body 1, facilitating connection and installation, and reducing the number of components.

[0034] Furthermore, such as Figure 2 As shown, in order to ensure a stable and reliable connection between the ceramic ferrule 32 and the SC adapter during connection, an inner limiting ring 13 is provided inside the connection end of the connector body 1, the connector 312 is connected to the inner limiting ring 13, and an elastic element 5 is provided inside the connector body 1 between the plug 311 and the connector 312.

[0035] Furthermore, such as Figure 2 As shown, in order to improve the connection stability between the heat shrink tube 41 and the tube body 11, an installation groove 211 is provided on the inner side of one end of the heat shrink tube 41 on the sleeve 21, and the end of the heat shrink tube 41 connected to the tube body 11 is set in the installation groove 211.

[0036] Furthermore, such as Figure 1 , 2 As shown, in order to improve the sealing and waterproof performance at the connection between the heat shrink tube 41 and the tube body 11, the sealing assembly 4 also includes a first sealing element 42, which is located between the tube body 11 and the heat shrink tube 41.

[0037] Furthermore, such as Figure 1 , 2 As shown, in order to improve the sealing and waterproof performance of the connection between the connector body 1 and the SC adapter, the sealing assembly 4 also includes a second sealing element 43, which is sleeved on the outside of the limiting boss 12.

[0038] Furthermore, such as Figure 1 , 2 As shown, the outer shell assembly 2 also includes a tail sleeve 22 and a dust cap 23 that are respectively connected to both ends of the sleeve 21. The dust cap 23 is sleeved on the connector body 1, and the tail sleeve 22 is sleeved on the heat shrink tube 41.

[0039] In this embodiment, the tail sleeve 22 is used to protect the connection between the optical fiber 100 and the tube body 11, thereby improving the reliability of the connection; the dust cap 23 is used to isolate the connector body 1 from the outside world when not in use, thereby preventing dust.

[0040] Furthermore, such as Figure 1 , 2 As shown, the dust cap 23 is screwed or snapped into the sleeve 21, and the tail sleeve 22 is screwed or snapped into the sleeve 21.

[0041] Furthermore, such as Figure 1 , 2 As shown, in order to prevent the dust cap 23 from detaching from the sleeve 21 and being lost during use, and to improve ease of use, the outer shell assembly 2 also includes a chain 24, the two ends of which are detachably engaged with the dust cap 23 and the tail sleeve 22, respectively.

[0042] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model patent.

Claims

1. A miniature waterproof fiber optic connector, comprising a connector body, a housing assembly, and an inner core assembly, characterized in that, The outer shell assembly includes a sleeve, and the non-connecting end of the connector body is provided with a tube body, which is slidably disposed inside the sleeve. A limiting boss is provided on the connector body at the end of the sleeve. The inner core assembly includes a plug-in assembly and a ceramic ferrule connected to an optical fiber. The plug-in assembly is located at the end of the tube away from the connector body. The plug-in assembly is plugged into the tube body. The ceramic ferrule is detachably disposed in the connector body through the plug-in assembly. The end of the optical fiber away from the ceramic ferrule axially passes through the plug-in assembly and extends to the outer side of the end of the tube body. It also includes a sealing assembly, which includes a heat-shrinkable tube disposed between the sleeve and the tube body. After the heat-shrinkable tube is heat-shrinked, one end is sealed to the tube body, the middle part is used to fix the plug-in assembly to the tube body, and the other end extends and is sealed to the optical fiber.

2. The miniature waterproof fiber optic connector according to claim 1, characterized in that, The plug-in assembly includes a plug and a connector. The plug is a T-shaped hollow structure, with one end extending into the tube body and plugging into the tube body, and the other end connected to the end surface of the tube body. One end of the connector is connected to the ceramic ferrule, and the other end extends into the plug. The optical fiber passes through the plug and the connector and then connects to the ceramic ferrule.

3. A miniature waterproof fiber optic connector according to claim 2, characterized in that, An inner limiting ring is provided inside the connecting end of the connector body, the connecting piece is connected to the inner limiting ring, and an elastic element is provided inside the connector body between the plug and the connecting piece.

4. A miniature waterproof fiber optic connector according to claim 1, characterized in that, An installation groove is provided on the inner side of one end of the heat shrink tube on the sleeve, and the end of the heat shrink tube that connects to the tube body is located in the installation groove.

5. A miniature waterproof fiber optic connector according to claim 1, characterized in that, The sealing assembly further includes a first seal located between the tube body and the heat shrink tube.

6. A miniature waterproof fiber optic connector according to claim 1, characterized in that, The sealing assembly further includes a second sealing element, which is sleeved on the outside of the limiting boss.

7. A miniature waterproof fiber optic connector according to claim 1, characterized in that, The housing assembly also includes a tail sleeve and a dust cap that are respectively connected to both ends of the sleeve. The dust cap is fitted onto the connector body, and the tail sleeve is fitted onto the heat shrink tubing.

8. A miniature waterproof fiber optic connector according to claim 7, characterized in that, The dust cap is screwed or snapped into the sleeve, and the tail sleeve is screwed or snapped into the sleeve.

9. A miniature waterproof fiber optic connector according to claim 7, characterized in that, The housing assembly also includes a chain belt, the two ends of which are detachably snapped into a dust cap and a tail sleeve, respectively.

Images