Optical fiber vehicle-mounted end box with cold connection structure

Abstract

The utility model discloses an optical fiber vehicle-mounted end box with a cold connection structure, relates to the technical field of optical fiber terminal boxes, and aims to solve the problem that the maintenance and replacement are relatively tedious when an optical fiber has a fault due to a welding type connection structure of the existing optical fiber vehicle-mounted end box. The access cover is installed on the upper surface of the vehicle-mounted optical fiber end box, and the four corners of the access cover are connected with the vehicle-mounted optical fiber end box through screws; the couplers are installed at the front end of the vehicle-mounted optical fiber end box, the number of the couplers is eight, first tail fiber cold joints are installed at the rear ends of the eight couplers, and the first tail fiber cold joints are located in the vehicle-mounted optical fiber end box; and the line concentration board is installed on the inner wall of the rear end of the vehicle-mounted optical fiber end box, the outer wall of the line concentration board is provided with eight second tail fiber cold joints, the outer wall of the rear end of the vehicle-mounted optical fiber end box is provided with a main optical cable cold joint, and the main optical cable cold joint is connected with the second tail fiber cold joints through the line concentration board.

Description

Technical Field

[0001] The utility model relates to the technical field of optical fiber terminal boxes, in particular to an optical fiber vehicle-mounted terminal box with a cold connection structure. Background Art

[0002] The fiber optic terminal box is the terminal connector of an optical cable. One end of it is the optical cable and the other end is the pigtail. It is equivalent to a device that splits an optical cable into multiple optical fibers. The optical cable terminal box installed on the vehicle has the function of providing the fusion splicing of optical fiber with the optical fiber of the on-board equipment, the fusion splicing of optical fiber with the pigtail, and the handover of optical connectors, and provides mechanical and environmental protection for the optical fiber and its components.

[0003] However, the existing fiber optic vehicle-mounted terminal box fusion-type connection structure is relatively cumbersome to repair and replace when the optical fiber fails; therefore, we propose an optical fiber vehicle-mounted terminal box with a cold connection structure to solve the above-mentioned problems. Utility Model Content

[0004] The utility model aims to provide an optical fiber vehicle-mounted terminal box with a cold connection structure to solve the problem that the existing optical fiber vehicle-mounted terminal box fusion connection structure proposed in the above background technology is complicated to repair and replace when the optical fiber fails.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an optical fiber vehicle-mounted terminal box with a cold connection structure, comprising an optical fiber vehicle-mounted terminal box;

[0006] Also includes:

[0007] An inspection cover, which is mounted on the upper surface of the vehicle-mounted optical fiber terminal box, and the four corners of the inspection cover are connected to the vehicle-mounted optical fiber terminal box by screws;

[0008] A coupler, which is installed at the front end of the vehicle-mounted optical fiber end box, and eight couplers are provided, and the rear ends of the eight couplers are all installed with a first pigtail cold joint, and the first pigtail cold joint is located inside the vehicle-mounted optical fiber end box;

[0009] A collection board is installed on the inner wall of the rear end of the vehicle-mounted optical fiber end box, and a second pigtail cold connector is arranged on the outer wall of the collection board, and eight second pigtail cold connectors are arranged. A main optical cable cold connector is installed on the outer wall of the rear end of the vehicle-mounted optical fiber end box, and the main optical cable cold connector is connected to the second pigtail cold connector through the collection board.

[0010] Preferably, the first pigtail cold joint, the second pigtail cold joint and the main optical cable cold joint all include a positioning head, a first half-threaded piece, a second half-threaded piece and a locking cap, the second half-threaded piece is fixedly mounted on the front end of the positioning head, the first half-threaded piece is arranged above the second half-threaded piece, and the rear end of the first half-threaded piece is rotatably connected to the second half-threaded piece through a rotating shaft, an internal thread is arranged on the inner wall of the locking cap, and the locking cap is threadably connected to the first half-threaded piece and the second half-threaded piece through the internal thread.

[0011] Preferably, a pigtail is arranged inside the vehicle-mounted optical fiber end box, and there are multiple pigtails, and both ends of the pigtail are respectively connected to the first pigtail cold joint and the second pigtail cold joint, the main optical cable is installed at the end of the main optical cable cold joint, and a winding reel is arranged at the middle position inside the vehicle-mounted optical fiber end box.

[0012] Preferably, a protective cap is sleeved on the outer wall of the coupler.

[0013] Preferably, mounting plates are provided on both sides of the front end of the vehicle-mounted optical fiber terminal box, and strip holes are provided inside the mounting plates.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] The vehicle-mounted optical fiber terminal box of the utility model adopts a cold connection method for both the internal pigtail and the external main optical cable. When the optical fiber is cold-connected, the fiber sheath at the end of the optical fiber is firstly stripped off by a stripper to expose the internal fiber core, and then a locking cap is inserted into the end of the optical fiber, and the first half threaded piece is flipped upward, and the fiber core and the end of the optical fiber are inserted into the positioning head. After completion, the first half threaded piece is covered, and the locking cap is brought close to the first half threaded piece and the second half threaded piece, and the locking cap is threadedly connected to the first half threaded piece and the second half threaded piece by relying on the internal thread. The whole process is convenient and fast, and when a single pigtail fails, it is convenient to disassemble and replace it independently, which is conducive to later maintenance, and solves the problem that the existing optical fiber vehicle-mounted terminal box fusion-type connection structure is relatively cumbersome to repair and replace when the optical fiber fails. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a schematic diagram of the internal structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the internal wiring state structure of the utility model;

[0019] Figure 4 It is a schematic diagram of the structure of the first pigtail cold joint, the second pigtail cold joint and the main optical cable cold joint of the utility model;

[0020] In the figure: 1. Vehicle-mounted optical fiber end box; 2. Inspection cover; 3. Screws; 4. Mounting plate; 5. Strip hole; 6. Coupler; 7. Protective cap; 8. Main optical cable cold connector; 9. First pigtail cold connector; 10. Winding reel; 11. Collection plate; 12. Second pigtail cold connector; 13. Pigtail; 14. Main optical cable; 15. Positioning head; 16. First half threaded piece; 17. Second half threaded piece; 18. Rotating shaft; 19. Locking cap. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] See also Figure 1-4 , the utility model provides an embodiment: an optical fiber vehicle-mounted terminal box with a cold connection structure, comprising an optical fiber vehicle-mounted terminal box 1;

[0023] Also includes:

[0024] An inspection cover 2 is mounted on the upper surface of the vehicle-mounted optical fiber terminal box 1, and the four corners of the inspection cover 2 are connected to the vehicle-mounted optical fiber terminal box 1 by screws 3;

[0025] A coupler 6 is installed at the front end of the vehicle-mounted optical fiber end box 1, and eight couplers 6 are provided, and a first pigtail cold connector 9 is installed at the rear end of the eight couplers 6, and the first pigtail cold connector 9 is located inside the vehicle-mounted optical fiber end box 1;

[0026] A collection plate 11 is installed on the inner wall of the rear end of the vehicle-mounted optical fiber end box 1, and a second pigtail cold joint 12 is arranged on the outer wall of the collection plate 11, and eight second pigtail cold joints 12 are arranged. A main optical cable cold joint 8 is installed on the outer wall of the rear end of the vehicle-mounted optical fiber end box 1, and the main optical cable cold joint 8 is connected to the second pigtail cold joint 12 through the collection plate 11.

[0027] See also Figure 3 and Figure 4The first pigtail cold joint 9, the second pigtail cold joint 12 and the main optical cable cold joint 8 all include a positioning head 15, a first half threaded piece 16, a second half threaded piece 17 and a locking cap 19, the second half threaded piece 17 is fixedly installed at the front end of the positioning head 15, the first half threaded piece 16 is arranged above the second half threaded piece 17, and the rear end of the first half threaded piece 16 is rotatably connected to the second half threaded piece 17 through a rotating shaft 18, and an internal thread is arranged on the inner wall of the locking cap 19, and the locking cap 19 is connected to the first half threaded piece 16 through the internal thread. The threaded piece 16 and the second half-threaded piece 17 are threadedly connected. When the optical fiber is cold-connected, the fiber sheath at the end of the optical fiber is firstly stripped off by a stripper to expose the internal fiber core. Then, the locking cap 19 is inserted into the end of the optical fiber, and the first half-threaded piece 16 is flipped upwards. The fiber core and the end of the optical fiber are inserted into the positioning head 15. After completion, the first half-threaded piece 16 is covered, and the locking cap 19 is placed close to the first half-threaded piece 16 and the second half-threaded piece 17. The locking cap 19 is threadedly connected to the first half-threaded piece 16 and the second half-threaded piece 17 by relying on the internal thread.

[0028] See also Figure 3 A pigtail 13 is arranged inside the vehicle-mounted optical fiber end box 1. There are multiple pigtails 13, and the two ends of the pigtail 13 are respectively connected to the first pigtail cold joint 9 and the second pigtail cold joint 12. The main optical cable 14 is installed at the end of the main optical cable cold joint 8. A winding reel 10 is arranged at the middle position inside the vehicle-mounted optical fiber end box 1. The pigtail 13 can be connected around the winding reel 10, so that the internal wiring is neater.

[0029] See also Figure 1 A protective cap 7 is sleeved on the outer wall of the coupler 6, and the protective cap 7 can protect the interface of the coupler 6 from dust when it is not in use.

[0030] See also Figure 1 Both sides of the front end of the vehicle-mounted optical fiber terminal box 1 are provided with mounting plates 4, and strip holes 5 are provided inside the mounting plates 4. The mounting plates 4 cooperate with the strip holes 5 and bolts to realize the installation of the vehicle-mounted optical fiber terminal box 1.

[0031] Working principle: When in use, the rear end of the coupler 6 of the vehicle-mounted optical fiber end box 1 is provided with a first pigtail cold joint 9, and the main optical cable cold joint 8 is connected to the second pigtail cold joint 12 through the hub 11. When the pigtail 13 is connected, its two ends can communicate with the coupler 6 and the main optical cable cold joint 8 through the first pigtail cold joint 9 and the second pigtail cold joint 12. The main optical cable cold joint 8, the first pigtail cold joint 9 and the second pigtail cold joint 12 are all composed of a positioning head 15, a first half threaded piece 16, a second half threaded piece 17 and a locking cap 19. When the optical fiber is cold connected, first The fiber sheath at the end of the optical fiber is stripped off by a stripper to expose the internal fiber core, and then the locking cap 19 is inserted into the end of the optical fiber, and the first half threaded piece 16 is flipped upwards, and the fiber core and the end of the optical fiber are inserted into the positioning head 15. After completion, the first half threaded piece 16 is covered, and the locking cap 19 is placed close to the first half threaded piece 16 and the second half threaded piece 17. The locking cap 19 is threadedly connected to the first half threaded piece 16 and the second half threaded piece 17 by relying on the internal thread. The whole process is convenient and quick, and when a single pigtail 13 fails, it is easy to disassemble and replace independently, which is beneficial to later maintenance.

[0032] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An optical fiber vehicle-mounted terminal box with a cold connection structure, comprising an optical fiber vehicle-mounted terminal box (1); Features: Also includes: An inspection cover (2) is mounted on the upper surface of the vehicle-mounted optical fiber terminal box (1), and the four corners of the inspection cover (2) are connected to the vehicle-mounted optical fiber terminal box (1) via screws (3); A coupler (6) is installed at the front end of the vehicle-mounted optical fiber end box (1), and eight couplers (6) are provided, and a first pigtail cold connector (9) is installed at the rear end of each of the eight couplers (6), and the first pigtail cold connector (9) is located inside the vehicle-mounted optical fiber end box (1); A collection board (11) is mounted on the inner wall of the rear end of the vehicle-mounted optical fiber end box (1); a second pigtail cold connector (12) is arranged on the outer wall of the collection board (11); and eight second pigtail cold connectors (12) are arranged; a main optical cable cold connector (8) is mounted on the outer wall of the rear end of the vehicle-mounted optical fiber end box (1); and the main optical cable cold connector (8) is connected to the second pigtail cold connector (12) through the collection board (11).

2. The optical fiber vehicle-mounted terminal box with a cold connection structure according to claim 1, characterized in that: The first pigtail cold joint (9), the second pigtail cold joint (12) and the main optical cable cold joint (8) all comprise a positioning head (15), a first half-threaded piece (16), a second half-threaded piece (17) and a locking cap (19); the second half-threaded piece (17) is fixedly mounted on the front end of the positioning head (15); the first half-threaded piece (16) is arranged above the second half-threaded piece (17); and the rear end of the first half-threaded piece (16) is rotatably connected to the second half-threaded piece (17) via a rotating shaft (18); an internal thread is arranged on the inner wall of the locking cap (19); and the locking cap (19) is threadedly connected to the first half-threaded piece (16) and the second half-threaded piece (17) via the internal thread.

3. The optical fiber vehicle-mounted terminal box with a cold connection structure according to claim 1, characterized in that: A pigtail (13) is arranged inside the vehicle-mounted optical fiber end box (1), a plurality of pigtails (13) are arranged, and two ends of the pigtail (13) are respectively connected to a first pigtail cold joint (9) and a second pigtail cold joint (12), a main optical cable (14) is installed at the end of the main optical cable cold joint (8), and a winding reel (10) is arranged at a middle position inside the vehicle-mounted optical fiber end box (1).

4. The optical fiber vehicle-mounted terminal box with a cold connection structure according to claim 1, characterized in that: A protective cap (7) is sleeved on the outer wall of the coupler (6).

5. The optical fiber vehicle-mounted terminal box with a cold connection structure according to claim 1, characterized in that: Both sides of the front end of the vehicle-mounted optical fiber terminal box (1) are provided with mounting plates (4), and strip-shaped holes (5) are provided inside the mounting plates (4).

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