Optical fiber connector

Abstract

The utility model relates to an optical fiber connector. The tail of the optical fiber connector is connected with an optical cable, the optical fiber connector comprises a front cylinder, a middle cylinder and a rear cylinder, the front end of the middle cylinder is inserted into the front cylinder and fixedly connected with the front cylinder, the rear end of the middle cylinder is inserted into the front end of the rear cylinder, and the front end of the rear cylinder and the rear end of the middle cylinder are fixedly connected through compression joint; the optical cable penetrates into the rear cylinder, and the rear end of the rear cylinder is fixedly connected with the optical cable through compression joint. The middle cylinder and the optical cable are crimped front and back through the rear cylinder, and the middle cylinder is fixedly connected with the front cylinder, so that the fixed connection strength of the optical cable body and the connector is improved, the structure is simple and reliable, and the optical fiber connector and the optical cable can be quickly assembled.

Description

Technical Field

[0001] The present application relates to the field of optical fiber technology, and more specifically to an optical fiber connector. Background Art

[0002] In the field of modern communications and data transmission, fiber optic connectors are crucial components used to connect optical fibers to achieve the transmission of optical signals. There are various types of fiber optic connectors on the market, including but not limited to SC connectors, LC connectors, FC connectors, etc. These fiber optic connectors have their own advantages and characteristics in different application scenarios. In a fiber optic connector, the optical cable is inserted into the connector, the fiber core is passed into the ferrule, and the optical cable body is fixed at the end of the connector. In common fiber optic connectors, the fixing strength of the optical cable body in the connector is insufficient, which makes it easy for the optical cable and the connector to loosen. In addition, the process is complicated and the manufacturing efficiency is low, which needs to be improved. Utility Model Content

[0003] The purpose of the present application is to overcome the above-mentioned deficiencies in the prior art and to provide an optical fiber connector to enhance the fixed connection strength between the optical cable body and the connector.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical solutions: an optical fiber connector, the tail of which is connected to an optical cable, the optical fiber connector comprising a front tube, a middle tube and a rear tube, the front end of the middle tube is inserted into the front tube and fixedly connected to each other, the rear end of the middle tube is inserted into the front end of the rear tube, the front end of the rear tube and the rear end of the middle tube are fixedly connected by crimping; the optical cable is inserted into the rear tube, and the rear end of the rear tube and the optical cable are fixedly connected by crimping.

[0005] The present application crimps the middle cylinder and the optical cable front and back through the rear cylinder, and the middle cylinder is fixedly connected to the front cylinder, thereby improving the fixed connection strength between the optical cable body and the connector, and the structure is simple and reliable, which is also more conducive to the rapid assembly of the optical fiber connector and the optical cable.

[0006] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 This is an exploded view of the optical fiber connector of this application.

[0008] Figure 2 A front view of the optical fiber connector for this application.

[0009] Figure 3 for Figure 2 AA section view of the.

[0010] Figure 4 for Figure 2 BB cross-sectional view.

[0011] Figure 5 This is a cross-sectional view of an optical fiber connector according to another example of the present application.

[0012] Figure 6 This is a cross-sectional view of an optical fiber connector according to another example of the present application.

[0013] It should be noted that the products shown in the above views have been appropriately reduced / enlarged to suit the size of the drawings and for clarity of the views, and there is no restriction on the size of the products shown in the views. DETAILED DESCRIPTION

[0014] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0016] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0017] The embodiment of the present application is a fiber optic connector, the tail of which is connected to an optical cable 50. The specific structure is as follows: Figure 1-6 shown. Figures 1 to 4 The optical fiber connector in the example is an SC type connector.

[0018] like Figure 1As shown, the optical fiber connector includes a front tube 10, a middle tube 20 and a rear tube 30. The front end 201 of the middle tube 20 is inserted into the front tube 10 and fixedly connected to each other. The rear end 202 of the middle tube 20 is inserted into the front end 31 of the rear tube 30, and the front end 31 of the rear tube 30 and the rear end 202 of the middle tube 20 are fixedly connected by crimping. The optical cable 50 is inserted into the rear tube 30, and the rear end 32 of the rear tube 30 and the optical cable 50 are fixedly connected by crimping. When assembling, the rear end 202 of the middle tube 20 is inserted into the front end 31 of the rear tube 30, and the optical cable 50 is inserted into the rear tube 30, and then a crimping machine or crimping pliers is used to directly apply pressure to the front end 31 and the rear end 32 of the rear tube 30 to deform it, so that the front end 31 of the rear tube 30 and the middle tube 20, and the rear end 32 of the rear tube 30 and the optical cable 50 are all firmly fixedly connected. The rear tube 30 can be made of deformable steel.

[0019] In some embodiments, Figure 1 As shown, the outer wall of the rear end 202 of the middle tube 20 is provided with anti-skid patterns 203 , which can help increase the friction between the outer wall of the rear end 202 of the middle tube 20 and the inner wall of the rear tube 30 , thereby helping to improve the connection stability between the middle tube 20 and the rear tube 30 .

[0020] In some embodiments, in combination Figure 1 and Figure 4 As shown, the outer wall of the front end 201 of the middle tube 20 is provided with an outwardly protruding latch 21, and the wall of the front tube 10 is provided with a corresponding latch hole 11, and the latch 21 is correspondingly inserted into the latch hole 11 to form a latch connection. Figure 1 In the embodiment, there are two opposite latch tongues 21 , and the latch holes 11 correspond to the latch tongues 21 one by one.

[0021] In some embodiments, Figure 3 and Figure 4 As shown, the optical cable 50 includes an outer sheath 51, a reinforcing member 55 and a fiber core 52 arranged in the outer sheath 51, and the optical cable 50 has an armored tube 53 built therein, the fiber core 52 passes through the armored tube 53, and the reinforcing member 55 is placed between the armored tube 53 and the outer sheath 51. The outer sheath 51 and the reinforcing member 55 are clamped between the armored tube 53 and the rear end 32 of the rear tube 30. The armored tube 53 can provide protection for the internal fiber core 52 to prevent the pressure generated by the deformation of the rear end 32 of the rear tube 30 from damaging the fiber core 52 in the optical cable 50. The reinforcing member 55 is generally aramid yarn. When clamped between the armored tube 53 and the rear end 32 of the rear tube 30, the reinforcing member 55 is rooted on the rear tube 30 and forms a whole with the optical fiber connector. The reinforcing member 55 mainly bears the fixing and retaining force between the optical fiber connector and the optical cable 50.

[0022] In some embodiments, in combination Figure 1 and Figure 3As shown, the optical fiber connector further includes a tail sleeve 40 made of soft rubber, the optical cable 50 passes through the tail sleeve 40, and the rear barrel 30 is placed in the tail sleeve 40. The inner wall of the front end opening of the tail sleeve 40 is provided with an inwardly facing snap ring 41. The tail sleeve 40 and the rear barrel 30 are tightly matched, and the inner diameter of the snap ring 41 of the tail sleeve 40 is smaller than the outer diameter of the front end 31 of the rear barrel 30, so that the tail sleeve 40 and the rear barrel 30 can be fixed to each other, and the tail sleeve 40 will not be easily separated from the rear barrel 30.

[0023] In some embodiments, in combination Figure 1 and Figure 3 As shown, the front barrel 10 is provided with a ferrule 60 and a tail handle 61 that are fixedly connected to each other, and the fiber core 52 in the optical cable 50 is inserted into the ferrule 30. A boss 611 is provided on the outer surface of the tail handle 61, and a compression spring 62 is sleeved on the outer wall of the tail handle 61. One end of the compression spring 62 abuts against the boss 611 of the tail handle 61, and the other end abuts against an inner step surface of the middle barrel 20. The other end of the boss 611 of the tail handle 61 abuts against the convex ring 12 on the inner wall of the front barrel 10. The restoring force of the compression spring 62 allows the boss 611 of the tail handle 61 to be tightly attached to the convex ring 12 on the inner wall of the front barrel 10. When the ferrule 60 is pushed by an axial external force, the ferrule 60 and the tail handle 61 move inward at the same time, the compression spring 62 is compressed, and the restoring force of the compression spring 62 increases. The restoring force of the compression spring 62 keeps the ferrule 60 and other docking components in close contact.

[0024] In some embodiments, in combination Figure 1 and Figure 3 As shown, the optical fiber connector further includes a movable housing 70. The front cylinder 10 and the middle cylinder 20 pass through the housing 70, and the housing 70 and the front cylinder 10 are slidably connected, and the sliding direction of the housing 70 is the axial direction of the optical fiber connector.

[0025] Figure 5 and Figure 6 The optical fiber connector in the example is an FC type connector. In other embodiments, the optical fiber connector may also be an LC type connector.

[0026] and Figures 1 to 4 The SC type connector shown differs in that Figure 5 In the FC type connector shown, the front end 201 of the middle cylinder 20 is screwed into the front cylinder 10 and the two are threadedly connected. In addition, the outer wall of the middle cylinder 20 is provided with a front protruding ring 22 and a rear protruding ring 23, and the inner wall of the front end opening of the tail sleeve 40 is provided with an inwardly facing snap ring 41, which is placed between the front protruding ring 22 and the rear protruding ring 23. The inner diameter of the snap ring 41 is smaller than the outer diameters of the front protruding ring 22 and the rear protruding ring 23, so the snap ring 41 is restricted between the front protruding ring 22 and the rear protruding ring 23, and even if the tail sleeve 40 and the rear cylinder 30 are not tightly matched, the tail sleeve 40 will not easily separate from the rear cylinder 30 and the middle cylinder 20.

[0027] and Figures 1 to 4 The SC type connector shown and Figure 5 The FC type connector shown differs in that Figure 6 In the FC type connector shown, the optical cable 50 includes an outer sheath 51, a reinforcing member 55 and a fiber core 52 arranged in the outer sheath 51. There is no armored tube inside the optical cable 50, so a steel sheath 54 is inserted into a section of the optical cable 50 that passes through the rear barrel 30, and the fiber core 52 passes through the steel sheath 54, and the reinforcing member 55 is placed between the steel sheath 54 and the outer sheath 51. The outer sheath 51 and the reinforcing member 55 are clamped between the steel sheath 54 and the rear end 32 of the rear barrel 30 at the same time. The steel sheath 54 can provide protection for a section of the fiber core 52 corresponding to the rear end 32 of the rear barrel 30, and prevent the pressure generated by the deformation of the rear end 32 of the rear barrel 30 from damaging the fiber core 52 in the optical cable 50. The reinforcing member 55 is generally aramid yarn. When clamped between the steel sheath 54 and the rear end 32 of the rear barrel 30, the reinforcing member 55 is rooted in the rear barrel 30 and forms a whole with the optical fiber connector. The reinforcing member 55 mainly bears the fixing and retaining force between the optical fiber connector and the optical cable 50. In other embodiments, if the optical cable connected to the SC type connector or the LC type connector does not have a built-in armor tube, the following may also be used: Figure 6 As shown, a steel sleeve is inserted to protect the installation structure of the fiber core.

[0028] The optical fiber connector of the above embodiment is respectively crimped to the middle cylinder 20 and the optical cable 50 by the rear cylinder 30, and the middle cylinder 20 is fixedly connected to the front cylinder 10, which improves the fixed connection strength between the optical cable 50 body and the connector, and has a simple and reliable structure, which is also more conducive to the rapid assembly of the optical cable 50 and the optical fiber connector.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representation of the above terms should not be understood as necessarily being directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0031] The above examples are only used to further illustrate the technical content of this application so that readers can understand it more easily, but they do not mean that the implementation methods of this application are limited to these. Any technical extension or re-creation made based on this application is protected by this application. The scope of protection of this application shall be subject to the claims.

Claims

1. An optical fiber connector, wherein an optical cable is connected to the rear end of the optical fiber connector, characterized in that: The optical fiber connector includes a front tube, a middle tube and a rear tube. The front end of the middle tube is inserted into the front tube and fixedly connected to each other, the rear end of the middle tube is inserted into the front end of the rear tube, and the front end of the rear tube and the rear end of the middle tube are fixedly connected by crimping; the optical cable is inserted into the rear tube, and the rear end of the rear tube and the optical cable are fixedly connected by crimping.

2. The optical fiber connector according to claim 1, wherein: The optical cable comprises an outer sheath, a reinforcing member and a fiber core arranged in the outer sheath. The optical cable passes through a steel sheath in a section of the rear tube, and the fiber core passes through the steel sheath. The outer sheath and the reinforcing member are clamped between the steel sheath and the rear tube. Alternatively, the optical cable has an armor tube built in it, the fiber core passes through the armor tube, and the outer sheath and the strength member are clamped between the armor tube and the rear tube.

3. The optical fiber connector according to claim 1, wherein: The front end of the middle tube is screwed into the front tube and the two form a threaded connection; or, the outer wall of the front end of the middle tube is provided with an outwardly protruding latch, and the wall of the front tube is provided with a corresponding latch hole, and the latch is inserted into the latch hole to form a latch connection.

4. The optical fiber connector according to claim 1, wherein: The optical fiber connector also includes a tail sleeve, the optical cable passes through the tail sleeve, and the rear tube is placed in the tail sleeve.

5. The optical fiber connector according to claim 4, characterized in that: The inner wall of the front opening of the tail sleeve is provided with an inwardly facing snap ring; the tail sleeve and the rear tube are tightly matched, and the inner diameter of the snap ring of the tail sleeve is smaller than the outer diameter of the front end of the rear tube.

6. The optical fiber connector according to claim 4, characterized in that: The outer wall of the middle tube is provided with a front convex ring and a rear convex ring, and the inner wall of the front end opening of the tail sleeve is provided with an inwardly facing clamping ring, which is placed between the front convex ring and the rear convex ring, and the inner diameter of the clamping ring is smaller than the outer diameters of the front convex ring and the rear convex ring.

7. The optical fiber connector according to claim 1, wherein: The front tube is provided with an insert and a tail handle which are fixedly connected to each other, the fiber core in the optical cable is inserted into the insert, the outer surface of the tail handle is provided with a boss, the outer wall of the tail handle is sleeved with a compression spring, one end of the compression spring abuts against the boss of the tail handle, and the other end abuts against an inner step surface of the middle tube, and the other end of the boss of the tail handle abuts against the convex ring on the inner wall of the front tube.

8. The optical fiber connector according to claim 1, wherein: The optical fiber connector also includes a shell, the front tube and the middle tube pass through the shell, the shell and the front tube are slidably connected, and the sliding direction of the shell is the axial direction of the optical fiber connector.

9. The optical fiber connector according to claim 1, wherein: The outer wall of the rear end of the middle tube is provided with anti-slip grooves for increasing friction.

10. The optical fiber connector according to any one of claims 1 to 9, characterized in that: The optical fiber connector is an SC connector, an FC connector or an LC connector.

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