Crimping-free optical fiber movable connector

Abstract

The utility model discloses a crimping-free optical fiber movable connector, which comprises an outer shell, a tail tube and a dustproof cap, an inner shell, an insertion core, a spring and a rear joint are sequentially packaged between the outer shell and the tail tube, the inner shell is sleeved and limited in the outer shell, one end of the insertion core is inserted into the inner shell, and the other end of the insertion core is inserted into the rear joint. After the cladding layer of the end part of the optical fiber is removed, the optical fiber passes through the tail tube and the rear joint and is directly inserted into the ferrule; according to the optical fiber connector, the cladding layer at the end part of the optical fiber is removed, and the exposed fiber core is directly inserted into the insertion core, so that the configuration and use of an aluminum ring and an aluminum cup in the prior art and the riveting process implemented for realizing the assembly of the two parts are reduced, the overall structure of the connector is simplified, the assembly cost of the connector is reduced, and the penetration and dispersion time efficiency is improved; as an aluminum ring and an aluminum cup do not need to be arranged, a larger adaptation space is provided for the insertion core, the arrangement diameter of the fiber core on the insertion core is increased to the maximum extent under the same assembly space of the rear joint, the strength of the insertion core is improved, and the application range of the insertion core is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber connection accessories, in particular to a pressure-free optical fiber active connector. Background Art

[0002] Fiber optic connectors (also known as fiber optic jumpers) are connector plugs installed at both ends of optical cables. They are used to precisely connect the two end faces of the optical fiber. The most important thing is to align the axes of the two optical fibers so that the light energy output by the transmitting optical fiber can be coupled to the receiving optical fiber to the maximum extent possible, and the impact on the system caused by its involvement in the optical link is minimized. Fiber optic connectors are used in fiber optic communication systems, fiber optic network connections, fiber optic data transmission, local area networks and other communication fields.

[0003] The structure of a fiber optic connector primarily consists of an optical cable, loose components, and a ferrule. The complex structure of the loose components complicates the entire manufacturing process. In particular, the assembly of the aluminum cup and aluminum ring requires a cumbersome riveting process, where the aramid layer is crimped and secured to the rear connector using the cup and ring. With the widespread use of fiber optic connectors in weak current engineering, demand for them has increased significantly. The complexity of the loose components has impacted the production efficiency and assembly efficiency of fiber optic connectors, hindering both production and labor costs. Furthermore, the rear shank of current fiber optic connector ferrules can only accommodate thin, tight-buffered fibers, such as 0.9 mm, which are weak and fragile. These fiber optic connectors are generally only suitable for laboratory use, with limited performance. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a pressure-free optical fiber active connector which helps to simplify the production and assembly process, reduce the production cost, shorten the production cycle and improve the strength.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: a crimp-free optical fiber active connector, comprising an outer shell and a tail tube that are detachably connected, the outer shell being plugged in and equipped with a dust cap at one end away from the tail tube, an inner shell, a ferrule, a spring and a rear joint being sequentially encapsulated between the outer shell and the tail tube, the inner shell being limitedly positioned inside the outer shell, one end of the ferrule being inserted into the inner shell and the other end being inserted into the rear joint, the ferrule located in the inner shell being plugged in and matched with the dust cap, the ferrule upper limit sleeve located in the rear joint being equipped with the spring, the tail tube being connected to the outer shell through the rear joint, the optical fiber end being removed from the coating and passing through the tail tube, and the rear joint being directly inserted into the ferrule.

[0006] As an improvement to the above technical solution, the ferrule includes a ceramic pin and a rear tail handle, and the inner hole diameter of the rear tail handle is 2.0 mm.

[0007] As a preferred technical scheme, the ferrule is provided with a protruding assembly ring table on the side, and the assembly ring table is uniformly provided with protruding plug-in protrusions, and the assembly ring table is connected to the rear joint in position through cooperation with the plug-in protrusions.

[0008] As a preferred technical scheme, the rear joint comprises a ferrule connecting part for connecting with the ferrule and a tail pipe connecting part for connecting with the tail pipe, the ferrule is connected to the ferrule connecting part in position through the assembly ring table and the plug-in protrusions, and the tail pipe connecting part is sleeved in the tail pipe.

[0009] As a preferred technical scheme, the ferrule connecting part is in a circular tube structure, and the inner wall is provided with plug-in grooves for plug-in cooperation with the plug-in protrusions, and the inner wall of the ferrule connecting part is provided with a plug-in ring groove on the inner side of the plug-in grooves, and the inner ends of the plug-in grooves are respectively communicated to the plug-in ring groove.

[0010] Thanks to the above technical scheme, the pressure-free optical fiber movable connector comprises a detachable and connectable shell and a tail pipe, a dustproof cap is assembled on the end of the shell away from the tail pipe, an inner shell, a ferrule, a spring and a rear joint are sequentially encapsulated between the shell and the tail pipe, the inner shell is sleeved and limited in the shell, one end of the ferrule is inserted into the inner shell and the other end is inserted into the rear joint, the ferrule in the inner shell is plug-in cooperated with the dustproof cap, the spring is sleeved and limited in position on the ferrule in the rear joint, the tail pipe is connected to the shell through the rear joint, and the fiber end after removing the cladding layer is directly inserted into the ferrule through the tail pipe and the rear joint; the cladding layer of the fiber end is removed, the bare fiber core is directly plug-in into the ferrule, the configuration and use of the aluminum ring and the aluminum cup in the prior art and the riveting process for realizing the assembly of two components are reduced, the overall structure of the connector is simplified, the assembly cost is reduced, and the time efficiency during threading is improved; without the aluminum ring and the aluminum cup, a larger adaptive space is provided for the ferrule, the diameter of the fiber core on the ferrule is maximally increased under the same assembly space of the rear joint, the strength is improved, and the use range is widened. BRIEF DESCRIPTION OF DRAWINGS

[0011] The following drawings only aim to schematically illustrate and explain the utility model, and do not limit the scope of the utility model. Among them:

[0012] Figure 1 is a structure schematic diagram of the utility model embodiment;

[0013] Figure 2 is a split state structure schematic diagram of the utility model embodiment;

[0014] Figure 3 is a structural schematic view of the plug-in core of the embodiment of the utility model;

[0015] Figure 4 is a side view of the plug-in core of the embodiment of the utility model;

[0016] Figure 5 is a side view of the rear joint of the embodiment of the utility model;

[0017] Figure 6 is a sectional structural schematic view of the rear joint of the embodiment of the utility model;

[0018] In the figure: 1 - shell; 2 - tail pipe; 3 - dust cap; 4 - inner shell; 5 - plug-in core; 51 - ceramic plug pin; 52 - rear tail handle; 53 - assembly ring table; 54 - plug-in convex; 6 - spring; 7 - rear joint; 71 - plug-in core connecting part; 72 - tail pipe connecting part; 73 - plug-in recess; 74 - plug-in ring groove. DETAILED DESCRIPTION

[0019] The utility model is further described below in combination with the drawings and embodiments. In the following detailed description, only certain exemplary embodiments of the utility model are described by way of illustration. It is needless to say that those skilled in the art can realize that the described embodiments can be modified in various ways without departing from the spirit and scope of the utility model. Therefore, the drawings and description are illustrative in nature and are not used to limit the protection scope of the claims.

[0020] As Figures 1 to 6 shown, the pressure-joint-free optical fiber movable connector includes detachable connection setting shell 1 and tail pipe 2, the shell 1 is inserted and assembled with dust cap 3 away from one end of the tail pipe 2, the shell 1 and the tail pipe 2 are sequentially encapsulated with inner shell 4, plug-in core 5, spring 6 and rear joint 7, and optical fiber is fixed on the plug-in core 5 through the tail pipe 2 and the rear joint 7. Wherein the shell 1, the tail pipe 2, the dust cap 3, the inner shell 4, the spring 6 and the rear joint 7 constitute the spare parts of the optical fiber movable connector.

[0021] Specifically, the inner shell 4 is limitedly positioned in the outer shell 1, one end of the ferrule 5 is inserted into the inner shell 4, and the other end is inserted into the rear joint 7, the ferrule 5 located in the inner shell 4 is plugged into the dust cap 3, and the ferrule 5 located in the rear joint 7 is limitedly mounted with the spring 6, the tail tube 2 is connected to the outer shell 1 through the rear joint 7, and the optical fiber end is directly inserted into the ferrule 5 through the tail tube 2 and the rear joint 7 after removing the coating layer. There is no need to use aluminum rings and aluminum cups to rivet the aramid layer of the optical fiber during bulk assembly, so there is no need to equip aluminum rings and aluminum cups and implement riveting processes, which not only reduces the configuration amount of parts and reduces production costs (including material costs and labor costs), but also helps to shorten the production cycle and improve assembly efficiency during use.

[0022] like Figure 3 As shown, the ferrule 5 includes a ceramic pin 51 and a rear handle 52, and the inner diameter of the rear handle 52 is 2.0mm. Since the aluminum ring and aluminum cup are not required, the rear connector 7 provides a larger fitting space for the ferrule 5, maximizing the diameter of the fiber core on the ferrule 5. For example, the inner diameter of the rear handle 52 that can be used with the original 0.9mm diameter is no longer required. Now, the inner diameter of the rear handle 52 that can be used with the same rear connector 7 can reach 2.0mm. In other words, the number of fiber cores that can be installed has increased from 0.9mm to 2.0mm. Connectors with 0.9mm fiber cores are generally only used in laboratories due to their poor strength and fragile optical fiber. However, increasing the core diameter to 2.0mm significantly improves the fiber core strength and expands its application range.

[0023] like Figure 4 、 Figure 5 and Figure 6 As shown, in this embodiment, the ferrule 5 is provided with a protruding mounting collar 53 on its periphery. The mounting collar 53 is uniformly distributed with protruding plugging protrusions 54. The mounting collar 53 and the plugging protrusions 54 cooperate to securely connect the ferrule 5 to the rear connector 7. The rear connector 7 includes a ferrule connection portion 71 for connecting to the ferrule 5 and a tail tube connection portion 72 for connecting to the tail tube 2. The ferrule 5 is secured in position by the mounting collar 53 and the plugging protrusions 54 with the ferrule connection portion 71, and the tail tube connection portion 72 is inserted and sheathed within the tail tube 2. The coordination of the mounting collar 53, the plugging protrusions 54, and the ferrule connection portion 71 makes the resulting optical fiber connector removable and detachable, allowing for flexible and adjustable use.

[0024] Specifically, the ferrule connection portion 71 is a circular tubular structure, and an inner wall is provided with an insertion groove 73 that is plugged into each of the insertion protrusions 54. An insertion ring groove 74 is provided on the inner wall of the ferrule connection portion 71, located inside the insertion groove 73, and the inner end of each of the insertion grooves 73 is connected to the insertion ring groove 74. When assembling and connecting the ferrule 5 with the rear connector 7, the insertion protrusion 54 is aligned with the insertion groove 73, and the ferrule 5 is pushed toward the rear connector 7 and inserted. After being inserted into place, the ferrule 5 is rotated, and the insertion protrusion 54 enters the insertion ring groove 74 to be misaligned with the insertion groove 73, thereby achieving rapid assembly of the two without the need for other auxiliary tools. When detaching the ferrule 5 from the rear connector 7, the ferrule 5 is rotated until the insertion protrusion 54 is aligned with the insertion groove 73, and the ferrule 5 is pulled outward.

[0025] The description of the present invention is provided for purposes of illustration and description and is not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A crimp-free optical fiber connector, comprising a detachably connected housing and a tail tube, wherein the end of the housing away from the tail tube is plugged with a dust cap, and characterized by: An inner shell, a ferrule, a spring and a rear joint are sequentially encapsulated between the outer shell and the tail tube. The inner shell is limitedly located in the outer shell. One end of the ferrule is inserted into the inner shell and the other end is inserted into the rear joint. The ferrule in the inner shell is plugged into and matched with the dust cap. The ferrule upper limit sleeve in the rear joint is equipped with the spring. The tail tube is connected to the outer shell through the rear joint. After the coating layer is removed from the end of the optical fiber, it passes through the tail tube and the rear joint is directly inserted into the ferrule.

2. The crimp-free optical fiber connector according to claim 1, wherein: The ferrule includes a ceramic pin and a rear tail handle, and the inner hole diameter of the rear tail handle is 2.0 mm.

3. The crimp-free optical fiber connector according to claim 1, wherein: A protruding assembly ring is provided on the periphery of the ferrule, and protruding plug-in protrusions are evenly distributed on the assembly ring. The assembly ring cooperates with the plug-in protrusions to be limitedly connected in the rear connector.

4. The crimp-free optical fiber connector according to claim 3, wherein: The rear joint includes a core insert connection portion for connecting to the core insert and a tail pipe connection portion for connecting to the tail pipe. The core insert is limitedly matched with the core insert connection portion through the assembly ring and the plug-in protrusion, and the tail pipe connection portion is plugged into and sleeved in the tail pipe.

5. The crimp-free optical fiber connector according to claim 4, wherein: The plug-in connection part is a circular tubular structure, and a plug-in groove is arranged on the inner wall to be plugged into each of the plug-in protrusions. A plug-in ring groove is provided on the inner wall of the plug-in connection part on the inner side of the plug-in groove, and the inner end of each of the plug-in grooves is respectively connected to the plug-in ring groove.

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