Prefabricated end head assembly of optical fiber hot melting connector

Abstract

The utility model discloses a prefabricated end head assembly of an optical fiber hot melting connector, which comprises a mounting shell, an insertion core connecting seat is arranged on the mounting shell, a pre-embedded insertion core is inserted on the insertion core connecting seat, the pre-embedded insertion core partially extends out of the mounting shell, a bare optical fiber is inserted on the pre-embedded insertion core, the bare optical fiber is arranged in the insertion core connecting seat in a penetrating manner, and the bare optical fiber is inserted into the insertion core connecting seat. And the insertion core connecting seat is partially exposed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of optical fiber connector, specifically relates to a kind of optical fiber hot melt connector prefabricated end assembly. BACKGROUND

[0002] Optical fiber connector is the core component of the realization equipment and optical fiber fast connection in optical fiber communication system, its role is to ensure low-loss and low reflection transmission of optical signal by accurate alignment, support flexible networking, multiple plug and maintenance, widely used in FTTH, data center and 5G base station and other scenes, the core type of optical fiber connector includes FC type, SC type, ST type, LC type and high-density MPO / MTP type, different models adapt to specific scene demand.

[0003] In the use process of optical fiber connector, the end part of the connector is fused with the skin cable of quantitative length according to scene demand, and the skin cable and the connector are fused by fiber fusion machine in the prior art, but the optical fiber on the end part of the existing connector is optical fiber with protective layer, and the protective layer and the coating layer need to be stripped before fusion to expose the bare optical fiber for fusion with the skin cable, which is very easy to cause core breakage during stripping operation, resulting in the need to replace new end part, which is not only inconvenient to operate, but also causes the use cost to increase substantially. UTILITY MODEL CONTENT

[0004] To solve the technical problems in the background art, the utility model provides an optical fiber hot melt connector prefabricated end assembly.

[0005] The technical scheme adopted by the utility model to solve the technical problems is as follows:

[0006] An optical fiber hot melt connector prefabricated end assembly, comprising a mounting shell, the mounting shell is provided with a ferrule connecting seat, the ferrule connecting seat is provided with a pre-embedded ferrule, the pre-embedded ferrule partially protrudes from the mounting shell, and the pre-embedded ferrule is provided with a bare optical fiber, the bare optical fiber is arranged in the ferrule connecting seat and partially exposed from the ferrule connecting seat.

[0007] Preferably, the mounting shell is provided with a retainer ring, the retainer ring is provided with an elastic element, one end of the elastic element abuts against the retainer ring, and the other end abuts against the ferrule connecting seat, so that the ferrule connecting seat abuts against the mounting shell, by the above improvement, the retainer ring is clamped on the mounting shell, and the elastic element is arranged on the retainer ring, the ferrule connecting seat is fixed on the mounting shell by abutting against the ferrule connecting seat with the elastic element, and the stability of the pre-embedded ferrule and the bare optical fiber is improved.

[0008] Preferably, the anti-reverse ring has a snap-fit ​​protrusion, and the mounting shell has a fixing groove for inserting the snap-fit ​​protrusion. Through the above improvements, the snap-fit ​​protrusion and the fixing groove are used to cooperate, so that the anti-reverse ring is fixedly snapped onto the mounting shell.

[0009] Preferably, the elastic element is sleeved on the outer periphery of the ferrule connector, the ferrule connector forms an abutment platform, and the anti-reverse ring forms an installation groove for the elastic element to be inserted. One end of the elastic element is inserted into the installation groove, and the other end abuts against the abutment platform. Through the above improvements, the elastic element is sleeved on the outer periphery of the ferrule connector and inserted into the installation groove to ensure the stability of the spring installation and further improve the reliability of fixing the ferrule connector.

[0010] Preferably, the mounting housing is further provided with a tail sleeve snap-fit ​​groove. Through the above improvements, the tail sleeve snap-fit ​​groove is used to snap with the tail sleeve, thereby improving the convenience of tail sleeve installation.

[0011] Preferably, the end of the ferrule connector forms an anti-rotation plane, and the mounting housing forms an anti-rotation groove. The end of the ferrule connector is inserted into the anti-rotation groove, and the anti-rotation plane abuts against the groove wall to restrict the ferrule connector from rotating. Through the above improvements, the offset rotation of the pre-embedded ferrule can be avoided.

[0012] Preferably, a limiting protrusion is formed on the anti-reverse ring, and a limiting groove is formed on the mounting shell for the limiting protrusion to be inserted into. Through the above improvements, the convenience of the anti-reverse ring installation process is enhanced.

[0013] Preferably, the insert connector has abutting teeth. Through the above improvements, the abutting teeth can not only better connect to the dust cover, but also better connect to the heat shrink tubing.

[0014] Preferably, the end of the ferrule connector forms a ferrule groove, and the pre-embedded ferrule is inserted into the ferrule groove. Through the above improvements, the reliability of the pre-embedded ferrule installation is enhanced.

[0015] Preferably, the top of the pre-embedded ferrule and the bottom of the ferrule connector are fitted with removable dust covers, and the bare optical fiber is placed inside the dust covers. Through the above improvements, the dust covers can isolate external dust and dirt, thereby ensuring the splicing quality.

[0016] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0017] By inserting a fixed-length bare optical fiber into a pre-embedded ferrule and then inserting the pre-embedded ferrule into a ferrule connector, the bare optical fiber passes through the ferrule connector and is partially exposed. The ferrule connector protects the bare optical fiber, allowing it to be exposed for an appropriate length. During the fusion splicing process, there is no need to remove the outer sheath or coating layer, which reduces the risk of bare optical fiber breakage, lowers manufacturing costs, and improves the convenience of the fusion splicing process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the mounting shell of this utility model;

[0021] Figure 4 This is a schematic diagram of the anti-reverse ring of this utility model;

[0022] Figure 5 This is a schematic diagram of the structure of the ferrule connector and the pre-embedded ferrule of this utility model;

[0023] Figure 6 This is a schematic diagram of the ferrule connector of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the pre-embedded ferrule and bare optical fiber of this utility model.

[0025] Figure 8 This is a schematic diagram of the structure of the mounting shell and the tail sleeve of this utility model.

[0026] Figure 9 This is a schematic diagram of the structure of the end assembly and dust cover of this utility model.

[0027] In the diagram: 1. Mounting housing; 2. Ferrule connector; 3. Embedded ferrule; 4. Bare optical fiber; 5. Anti-reverse ring; 6. Elastic element; 7. Dust cover; 8. Tail sleeve; 1.1. Snap-fit ​​protrusion; 1.2. Fixing slot; 1.3. Abutment platform; 1.4. Mounting groove; 1.5. Tail sleeve snap-fit ​​groove; 2.1. Anti-rotation plane; 2.2. Anti-rotation groove; 2.3. Limiting protrusion; 2.4. Limiting groove; 2.5. Abutment tooth; 2.6. Insertion groove; 3.1. Protection channel; 3.2. Guide section; 3.3. Limiting section; 3.4. Transition section; 3.5. Fiber guide arc surface. Detailed Implementation

[0028] 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.

[0029] It should be understood that although the terms upper, middle, lower, top, one end, etc., appear in this document to describe various elements, these elements are not limited by these terms. These terms are only used to distinguish the elements from each other for ease of understanding, and are not used to define any directional or sequential restrictions.

[0030] like Figures 1-9 As shown, a prefabricated end assembly for a fiber optic fusion connector includes a mounting shell 1, a ferrule connector 2 on the mounting shell 1, a pre-embedded ferrule 3 inserted into the ferrule connector 2, the pre-embedded ferrule 3 partially extending out of the mounting shell 1, and a bare optical fiber 4 inserted into the pre-embedded ferrule 3, the bare optical fiber 4 passing through the ferrule connector 2 and partially exposed.

[0031] During the fusion splicing process, only the end assembly and the drop cable need to be placed directly on the fusion splicer, so that the bare fiber 4 on the end assembly can be fused with the drop cable. Compared with traditional connectors, which require stripping the outer sheath and coating of the fiber at the end before fusion splicing, this not only improves the convenience of the fusion splicing process, but also avoids the breakage of the bare fiber 4, thereby reducing the cost of use.

[0032] In addition, the prefabricated end-piece assembly is manufactured by directly cutting bare optical fiber 4 to a fixed length, which further reduces the manufacturing cost compared to traditional optical fiber with a protective layer.

[0033] The ferrule connector 2 forms a protective channel 3.1. The bare optical fiber 4 is inserted into the protective channel 3.1 and extends out of the protective channel 3.1 by a fixed length. The length of the bare optical fiber 4 is X. The length of the bare optical fiber 4 inserted into the protective channel 3.1 is 0.45X-0.48X, and the length of the bare optical fiber 4 extending out of the protective channel 3.1 is 0.21X-0.24X. For example, if the length of the bare optical fiber 4 is 35mm, the length inserted into the pre-embedded ferrule 3 is 10.5mm, the length of the bare optical fiber 4 inserted into the protective channel 3.1 is 16.5mm, and the length of the bare optical fiber 4 extending out of the protective channel 3.1 is 8mm. Inserting the bare optical fiber 4 of a fixed length into the protective channel 3.1 ensures the stability of the bare optical fiber 4 and avoids breakage during transportation. Extending the bare optical fiber 4 of a fixed length out of the protective channel 3.1 eliminates the need for cutting, stripping, and peeling of the coating when splicing with the drop cable, greatly improving the convenience of operation and the splicing efficiency.

[0034] Furthermore, the protection channel 3.1 includes a guiding section 3.2, a limiting section 3.3, and a transition section 3.4 connecting the guiding section 3.2 and the limiting section 3.3. The diameter of the limiting section 3.3 is smaller than that of the guiding section 3.2, and the diameter of the transition section 3.4 gradually decreases along the direction of the bare optical fiber's extension, forming a fiber-guiding arc surface 3.5. During the connection process between the bare optical fiber 4 and the ferrule connector 2, the bare optical fiber 4 first enters the guiding section 3.2, and then enters the limiting section 3.3 through the guidance of the transition section 3.4, thus improving the smoothness and safety of the bare optical fiber 4 during the insertion process.

[0035] like Figure 6 As shown, preferably, the end of the ferrule connector 2 forms a ferrule groove 2.6, and the pre-embedded ferrule 3 is inserted into the ferrule groove 2.6, which improves the reliability of the installation of the pre-embedded ferrule 3.

[0036] like Figures 1 to 6 As shown, to further explain the installation of the ferrule connector 2, a retaining ring 5 is clamped on the mounting shell 1. An elastic element 6 is provided on the retaining ring 5. One end of the elastic element 6 abuts against the retaining ring 5, and the other end abuts against the ferrule connector 2, so that the ferrule connector 2 abuts against the mounting shell 1, thereby fixing the ferrule connector 2 inside the mounting shell 1. At the same time, it can improve the stability of the installation of the pre-embedded ferrule 3 and the bare optical fiber 4.

[0037] The anti-reverse ring 5 has a snap-fit ​​protrusion 1.1, and the mounting shell 1 has a fixing groove 1.2 for inserting the snap-fit ​​protrusion 1.1. The snap-fit ​​protrusion 1.1 and the fixing groove 1.2 cooperate to fix the anti-reverse ring 5 onto the mounting shell 1, so as to ensure the stability of the anti-reverse ring 5 installation.

[0038] Furthermore, the elastic element 6 is sleeved on the outer periphery of the ferrule connector 2, and the ferrule connector 2 forms an abutment platform 1.3. The anti-reverse ring 5 forms an installation groove 1.4 for the elastic element 6 to be inserted. One end of the elastic element 6 is inserted into the installation groove 1.4, and the other end abuts against the abutment platform 1.3. Sleeving the elastic element 6 on the outer periphery of the ferrule connector 2 and inserting it into the installation groove 1.4 ensures the stability of the spring installation, improves the balance of the pressure applied to the ferrule connector 2, and further enhances the stability of the ferrule connector 2.

[0039] In addition, the end of the ferrule connector 2 forms an anti-rotation plane 2.1, and the mounting shell 1 forms an anti-rotation groove 2.2. The end of the ferrule connector 2 is inserted into the anti-rotation groove 2.2, and the anti-rotation plane 2.1 abuts against the groove wall of the anti-rotation groove 2.2 to restrict the rotation of the ferrule connector 2, which can prevent the pre-embedded ferrule 3 and the bare optical fiber 4 from shifting and rotating.

[0040] Preferably, the anti-reverse ring 5 has a limiting protrusion 2.3, and the mounting shell 1 has a limiting protrusion 2.3 inserted into the limiting groove 2.4, which improves the convenience of the anti-reverse ring 5 during installation. During installation, the anti-reverse ring 5 is guided so that the end of the anti-reverse ring 5 can be inserted into the anti-rotation groove 2.2, and the snap-fit ​​protrusion 1.1 can enter into the fixing groove 1.2.

[0041] Preferably, the insert connector 2 has abutting teeth 2.5. The abutting teeth 2.5 can not only better connect to the dust cover 7, but also better connect to the heat shrink tubing, thereby improving the reliability of the connection between the insert connector 2 and the dust cover 7 or the heat shrink tubing.

[0042] like Figure 8 As shown, further explanation of the connection between the mounting housing 1 and the tail sleeve 8 is provided: the mounting housing 1 is also provided with a tail sleeve snap-fit ​​groove 1.5, which is used to snap-fit ​​with the tail sleeve 8 to improve the convenience of installing the tail sleeve 8.

[0043] like Figure 9 As shown, in some other embodiments, a removable dust cover 7 is fitted on the top of the pre-embedded ferrule 3 and the bottom of the ferrule connector 2, and the bare optical fiber 4 is placed inside the dust cover 7. The dust cover 7 can isolate external dust and dirt, which not only ensures the splicing quality, but also avoids the external environment from affecting the pre-embedded ferrule 3 and the dust cover 7 during storage or transportation.

[0044] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

Claims

1. A fiber fusion splicer preform tip assembly, comprising: The application relates to a mounting shell (1) provided with a plug core connecting seat (2), a pre-embedded plug core (3) is inserted in the plug core connecting seat (2), the pre-embedded plug core (3) partially extends out of the mounting shell (1), and a bare optical fiber (4) is inserted in the pre-embedded plug core (3) and partially exposed from the plug core connecting seat (2).

2. A fiber fusion splicer preform tip assembly according to claim 1, wherein: A retreat-stop ring (5) is clamped on the mounting shell (1), the retreat-stop ring (5) is provided with an elastic element (6), one end of the elastic element (6) abuts against the retreat-stop ring (5), and the other end abuts against the plug core connecting seat (2) so that the plug core connecting seat (2) abuts against the mounting shell (1).

3. A fiber fusion splicer preform tip assembly according to claim 2, wherein: A clamping protrusion (1.1) is formed on the retreat-stop ring (5), and a fixed clamping groove (1.2) is formed on the mounting shell (1) and used for placing the clamping protrusion (1.1).

4. A fiber fusion splicer preform tip assembly according to claim 2, wherein: The elastic element (6) is sleeved on the outer periphery of the plug core connecting seat (2), an abutting platform (1.3) is formed on the plug core connecting seat (2), an installation groove (1.4) is formed on the retreat-stop ring (5) and used for placing the elastic element (6), one end of the elastic element (6) is placed in the installation groove (1.4), and the other end abuts against the abutting platform (1.3).

5. A fiber fusion splicer preform tip assembly according to claim 1, wherein: A tail sleeve clamping groove (1.5) is further arranged on the mounting shell (1).

6. A fiber fusion splicer preform tip assembly according to claim 1, wherein: An anti-rotation plane (2.1) is formed at the end of the plug core connecting seat (2), an anti-rotation groove (2.2) is formed in the mounting shell (1), the end of the plug core connecting seat (2) is inserted in the anti-rotation groove (2.2), and the anti-rotation plane (2.1) abuts against the groove wall of the anti-rotation groove (2.2) so as to limit the rotation of the plug core connecting seat (2).

7. A fiber fusion splicer preform tip assembly according to claim 2, wherein: A limiting protrusion (2.3) is formed on the retreat-stop ring (5), and a limiting groove (2.4) is formed on the mounting shell (1) and used for placing the limiting protrusion (2.3).

8. A fiber fusion splicer preform tip assembly according to claim 1, wherein: An abutting tooth (2.5) is formed on the plug core connecting seat (2).

9. A fiber fusion splicer preform tip assembly according to claim 1, wherein: An insertion groove (2.6) is formed at the end of the plug core connecting seat (2), and the pre-embedded plug core (3) is inserted in the insertion groove (2.6).

10. A fiber fusion splicer preform tip assembly according to claim 1, wherein: A detachable dustproof sleeve (7) is sleeved on the top of the pre-embedded plug core (3) and the bottom of the plug core connecting seat (2), and the bare optical fiber (4) is placed in the dustproof sleeve (7).

Images