Optical fiber anti-rotation angle positioning structure

Abstract

The utility model discloses an optical fiber anti-rotation angle positioning structure, which comprises a lens main body and an optical fiber fixing seat, the rear end of the lens main body is provided with an embedding port, the optical fiber fixing seat is embedded in the embedding port, the optical fiber fixing seat and the embedding port are clamped and matched, the front side wall of the embedding port is provided with an optical fiber insertion hole, and the optical fiber insertion hole is inserted into the optical fiber insertion hole. The optical fiber fixing base is provided with an optical fiber penetrating hole, an optical fiber penetrates through the optical fiber penetrating hole, the front end of the optical fiber is inserted into the optical fiber inserting hole, and the rear end of the optical fiber fixing base and the outer wall of the optical fiber are fixed through glue. According to the utility model, based on the embedding relationship between the optical fiber fixing seat and the embedding port and the gluing fixing relationship between the optical fiber and the optical fiber fixing seat, the rotation of the optical fiber can be effectively prevented, the influence on the optical transmission direction can be avoided, the optical transmission performance can be ensured not to be reduced, and the application requirements can be well met.

Description

Technical Field

[0001] This utility model relates to optical fiber connection devices, and more particularly to an optical fiber anti-rotation angle positioning structure. Background Technology

[0002] In practical applications, optical fibers include single fibers (9um & 50um core, 125um cladding, 250um coating diameter) and ribbon fibers (multiple single fibers arranged in a row with a 250um spacing). Single fibers are used for single-path optical transmission, while ribbon fibers are used for multi-path optical transmission. The standard spacing of ribbon fibers is 250um. However, when used in conjunction with optical communication DR single-mode plastic lenses, multiple fibers with non-standard spacing are needed to form multi-path transmission, such as 500um / 750um. This type of application cannot be made into ribbon fibers. In addition, when the front end face of the fiber is inclined, the single fiber will have a free rotation angle along its axis. In practical applications, the angular position between the fiber and the lens is easily affected by external forces, which will affect the direction of light transmission and lead to a decrease in optical transmission performance. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide an angle positioning structure that can prevent optical fiber rotation and avoid affecting the direction and performance of optical transmission, in order to address the shortcomings of the existing technology.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution.

[0005] A fiber optic anti-rotation angle positioning structure includes a lens body and a fiber optic fixing base. The rear end of the lens body has an insertion port, and the fiber optic fixing base is embedded in the insertion port and the two are engaged. The front side wall of the insertion port has a fiber optic insertion hole, and the fiber optic fixing base has a fiber optic through hole. An optical fiber is inserted into the fiber optic through hole, and the front end of the optical fiber is inserted into the fiber optic insertion hole. The rear end of the fiber optic fixing base is fixed to the outer wall of the optical fiber with adhesive.

[0006] Preferably, the optical fiber includes an optical fiber core and an optical fiber coating layer covering the outside of the optical fiber core, the front end of the optical fiber core is inserted into the optical fiber jack, and the outer wall of the optical fiber coating layer is tightly fitted with the inner wall of the optical fiber jack.

[0007] Preferably, a stepped opening is formed at the rear end of the optical fiber perforation, and adhesive is provided in the stepped opening to fix the optical fiber in the stepped opening.

[0008] Preferably, the stepped opening is a conical concave opening.

[0009] Preferably, the front sidewall of the mounting port is provided with multiple fiber optic jacks, and the fiber optic mounting base is provided with multiple fiber optic through holes, with each fiber optic through hole corresponding to one of the fiber optic jacks.

[0010] Preferably, the fiber optic mounting base is a cuboid mounting base, and multiple fiber optic perforations are evenly distributed along the length direction of the fiber optic mounting base.

[0011] In the fiber optic anti-rotation angle positioning structure disclosed in this utility model, the fiber optic fixing seat has a fixing function for the fiber optic cable. After the fiber optic cable passes through the fiber optic perforation, it can be fixed to the fiber optic fixing seat with glue. At the same time, based on the interlocking relationship between the fiber optic fixing seat and the mounting port, the position of the fiber optic fixing seat is restricted. Compared with the prior art, this utility model, based on the interlocking relationship between the fiber optic fixing seat and the mounting port and the glue fixing relationship between the fiber optic cable and the fiber optic fixing seat, can effectively prevent the fiber optic cable from rotating. This can avoid affecting the direction of optical transmission and ensure that the optical transmission performance is not reduced, thus better meeting the application requirements. Attached Figure Description

[0012] Figure 1 This is a three-dimensional view of the angle positioning structure of this utility model;

[0013] Figure 2 This is a cross-sectional view of the angle positioning structure of this utility model;

[0014] Figure 3 This is an exploded view of the angle positioning structure of this utility model. Detailed Implementation

[0015] The present invention will now be described in more detail with reference to the accompanying drawings and embodiments.

[0016] This utility model discloses a fiber optic anti-rotation angle positioning structure, combined with... Figures 1 to 3 As shown, it includes a lens body 1 and an optical fiber holder 2. The rear end of the lens body 1 has an insertion port 10. The optical fiber holder 2 is embedded in the insertion port 10 and the two are engaged. The front side wall of the insertion port 10 has an optical fiber insertion hole 11. The optical fiber holder 2 has an optical fiber through hole 20. An optical fiber 3 is inserted into the optical fiber through hole 20. The front end of the optical fiber 3 is inserted into the optical fiber insertion hole 11. The rear end of the optical fiber holder 2 is fixed to the outer wall of the optical fiber 3 with glue.

[0017] In the above structure, the fiber optic fixing base 2 has a fixing function for the fiber optic 3. After the fiber optic 3 passes through the fiber optic perforation 20, it can be fixed to the fiber optic fixing base 2 with glue. At the same time, based on the interlocking relationship between the fiber optic fixing base 2 and the mounting port 10, the position of the fiber optic fixing base 2 is restricted. Compared with the prior art, this utility model, based on the interlocking relationship between the fiber optic fixing base 2 and the mounting port 10 and the glue fixing relationship between the fiber optic 3 and the fiber optic fixing base 2, can effectively prevent the fiber optic from rotating, which can avoid affecting the optical transmission direction and ensure that the optical transmission performance is not reduced, thus better meeting the application requirements.

[0018] Regarding the specific structure of the optical fiber 3, in this embodiment, the optical fiber 3 includes an optical fiber core 30 and an optical fiber coating layer 31 covering the outside of the optical fiber core 30. The front end of the optical fiber core 30 is inserted into the optical fiber jack 11, and the outer wall of the optical fiber coating layer 31 is tightly fitted with the inner wall of the optical fiber perforation 20.

[0019] In the above structure, after the fiber coating layer 31 is stripped from the front end of the optical fiber 3, the fiber core 30 is exposed. The front end of the fiber core 30 is inserted into the optical fiber socket 11 to complete the optical fiber connection. The front end of the fiber core 30 can be cut to the required fiber length and angle using a laser fiber cutter.

[0020] As a preferred embodiment, a stepped opening 21 is formed at the rear end of the optical fiber perforation 20, and adhesive is provided inside the stepped opening 21 to fix the optical fiber 3 within the stepped opening 21. Further, the stepped opening 21 is a conical concave opening.

[0021] In the above structure, since the rear end of the optical fiber perforation 20 has a stepped opening 21, the optical fiber perforation 20 in this structure is countersunk. The concave stepped opening 21 provides a space for the glue. After the glue is applied into the stepped opening 21, the optical fiber coating layer 31 can be reliably fixed to the rear end of the optical fiber fixing seat 2.

[0022] In this embodiment, the front sidewall of the mounting port 10 is provided with multiple fiber optic jacks 11, and the fiber optic mounting base 2 is provided with multiple fiber optic through holes 20, with each fiber optic through hole 20 corresponding to one of the fiber optic jacks 11. Further, the fiber optic mounting base 2 is a cuboid mounting base, and the multiple fiber optic through holes 20 are evenly spaced along the length of the fiber optic mounting base 2.

[0023] In the above structure, the fiber coating layer 31 of the plurality of optical fibers 3 passes through the plurality of optical fiber through-holes 20 respectively. Please refer to [link to relevant documentation]. Figure 2The reserved length of the optical fiber coating layer 31 is slightly longer, that is, the optical fiber coating layer 31 extends one end of its length toward the front side of the optical fiber perforation 20, so that the optical fiber 3 and the optical fiber perforation 20 are closely matched.

[0024] The fiber optic anti-rotation angle positioning structure disclosed in this utility model includes four holes, the diameter of which is 0.001-0.01 mm larger than the fiber optic coating. Each hole has a guide angle at its rear end to facilitate fiber insertion and serve as a dispensing point for fiber fixation. The number and spacing of all holes can be adjusted and customized as needed. The fiber optic fixing base can be made of plastic or metal, achievable through injection molding or machining. In use, after inserting the fiber optic cable into the hole, leaving a 10 mm length at the front end, the fiber is fixed in place by dispensing adhesive in the fiber insertion guide groove. A laser fiber stripper is used to remove the coating of the required length, and a laser fiber cutter is used to cut the fiber to the required length and angle. The fiber optic cable and fixing base are then assembled. The entire assembly is then inserted into a plastic lens, and adhesive is dispensed to fix it, completing the connection between the plastic lens and the fiber optic cable. Compared to existing technologies, this utility model has a simpler structure, can be achieved through injection molding, and the fiber optic cable assembly process is simpler, resulting in higher reliability after fiber fixation.

[0025] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. All modifications, equivalent substitutions or improvements made within the technical scope of the present utility model should be included within the scope of protection of the present utility model.

Claims

1. A fiber optic anti-rotation angle positioning structure, characterized in that, The device includes a lens body (1) and an optical fiber holder (2). The lens body (1) has an insertion port (10) at its rear end. The optical fiber holder (2) is inserted into the insertion port (10) and the two are engaged. The front side wall of the insertion port (10) has an optical fiber insertion hole (11). The optical fiber holder (2) has an optical fiber through hole (20). An optical fiber (3) is inserted into the optical fiber through hole (20). The front end of the optical fiber (3) is inserted into the optical fiber insertion hole (11). The rear end of the optical fiber holder (2) is fixed to the outer wall of the optical fiber (3) with glue.

2. The fiber optic anti-rotation angle positioning structure as described in claim 1, characterized in that, The optical fiber (3) includes an optical fiber core (30) and an optical fiber coating layer (31) covering the outside of the optical fiber core (30). The front end of the optical fiber core (30) is inserted into the optical fiber jack (11), and the outer wall of the optical fiber coating layer (31) is tightly fitted with the inner wall of the optical fiber through hole (20).

3. The fiber optic anti-rotation angle positioning structure as described in claim 2, characterized in that, The rear end of the fiber optic perforation (20) is formed with a stepped opening (21), and glue is provided in the stepped opening (21) to fix the fiber optic cable (3) in the stepped opening (21).

4. The fiber optic anti-rotation angle positioning structure as described in claim 3, characterized in that, The stepped opening (21) is a conical concave opening.

5. The fiber optic anti-rotation angle positioning structure as described in claim 1, characterized in that, The front side wall of the mounting port (10) is provided with multiple fiber optic jacks (11), and the fiber optic mounting base (2) is provided with multiple fiber optic through holes (20), and the fiber optic through holes (20) correspond one-to-one with the fiber optic jacks (11).

6. The fiber optic anti-rotation angle positioning structure as described in claim 5, characterized in that, The fiber optic mounting base (2) is a cuboid mounting base, and multiple fiber optic perforations (20) are evenly distributed along the length direction of the fiber optic mounting base (2).

Images