CN219370057U

CN219370057U - Straight-groove type inner hole optical fiber connector for double-core optical fiber jumper

Info

Publication number: CN219370057U
Application number: CN202320287884.8U
Authority: CN
Inventors: 康志京
Original assignee: Suzhou Feiboschuang Photoelectric Technology Co ltd
Current assignee: Suzhou Feiboschuang Photoelectric Technology Co ltd
Priority date: 2023-02-22
Filing date: 2023-02-22
Publication date: 2023-07-18
Anticipated expiration: 2033-02-22

Abstract

The utility model discloses a straight groove type inner hole optical fiber connector for a double-core optical fiber jumper, which comprises the following components: the device comprises a ferrule, a knurled nut, a clamping ring, a pressing ring and a tail connecting pipe; the insert core is provided with a shaft hole, the front end of the shaft hole is a straight slot, the tail end of the shaft hole is a round hole, and the outer circumference of the insert core is provided with a clamping ring groove and a shaft shoulder; the knurled nut is sleeved on the lock pin, the clamping ring is matched with the clamping ring groove and sleeved on the clamping ring groove, the clamping ring is sleeved on the tail end of the lock pin, the tail connecting pipe is sleeved on the clamping ring, and the tail connecting pipe is sleeved on one end inner wall of the clamping ring and is provided with a groove matched with the clamping ring. The inner hole at the front end is provided with a straight notch, the shape of the inner hole can be fully attached to the size of the double-core optical fiber, and the optical fiber can be prevented from twisting due to the limitation of space, so that the two optical fibers are in a parallel state, the consistency of products is ensured, and the production efficiency and the yield of the double-core optical fiber jumper are improved.

Description

Straight-groove type inner hole optical fiber connector for double-core optical fiber jumper

Technical Field

The utility model belongs to the technical field of optical fiber jumpers, and particularly relates to a straight-groove type inner hole optical fiber connector for a double-core optical fiber jumper.

Background

The optical fiber beam splitting technology is commonly used in the spectrum analysis industry, one branch end of the optical fiber beam splitting technology is connected with a laser, the other branch end of the optical fiber beam splitting technology is connected with a spectrometer, and a beam combining end of the optical fiber beam splitting technology is aligned with a measured object, and the optical fiber beam splitting technology utilizes the reflection principle of light to perform spectrum analysis so as to achieve the purpose of data detection. The dual-core optical fiber jumper is an important component in a spectrum analysis system, and the quality of the dual-core optical fiber jumper directly determines the stability and consistency of data. Conventional manufacturing processes, as shown in fig. 6, use standard splices with apertures that can accommodate two optical fibers to make the beam-combining end. For example, a fiber having a cladding diameter of 440 microns would employ a standard splice having an aperture of 880 microns.

The Chinese patent publication No. CN217902100U discloses a device for realizing different optical fiber integrated optical fiber bundles, which comprises an optical fiber bundle combination, a plurality of optical fiber bundle splitting, an optical fiber bundle metal beam combiner and a plurality of optical fiber connectors, wherein the device combines the optical fiber bundles into the optical fiber bundle combination through the optical fiber bundle metal beam combiner, and the optical fiber connectors are respectively arranged at the tail ends of the optical fiber bundles. By adopting the device for realizing the integration of the optical fiber bundles by different optical fibers, the optical fibers with different types, different core diameters and different applications can be integrated in one optical fiber bundle. The advantage of this is that the application scenario of a plurality of devices can be realized by using one device, and the optical fibers with different purposes are integrated into one optical fiber bundle.

Because of the large space inside the standard connector, during the assembly and curing process of the optical fibers, the two optical fibers can form uncertain offset, twist or rotation due to the action of external force, i.e. the two optical fibers cannot be guaranteed to be in a parallel state all the time. The shape and position state difference of the optical fiber directly influences the wave transmission rate of the optical fiber, and the double-core optical fiber jumper produced by the conventional process has the condition that the wave transmission rates of the optical fibers at two branch ends are inconsistent, so that the use of a laser and a spectrometer is influenced. In addition, larger gaps exist around the two optical fibers, the optical cement is needed to be filled, the curing time of the optical fibers is prolonged, the optical fibers are easy to collapse during subsequent grinding, and the production efficiency and the yield of the double-core optical fiber jumper wire are affected.

Disclosure of Invention

The utility model provides a straight-groove type inner hole optical fiber connector for a double-core optical fiber jumper, and aims to solve the problems of offset, twisting or rotation of optical fibers in the connector and low production efficiency and yield of the double-core optical fiber jumper in the prior art.

In order to solve the above technical problems, the present utility model provides a straight groove type inner hole optical fiber connector for a dual-core optical fiber jumper, comprising: the device comprises a ferrule, a knurled nut, a clamping ring, a pressing ring and a tail connecting pipe; the insert core is provided with a shaft hole, the front end of the shaft hole is a straight slot, the tail end of the shaft hole is a round hole, and the outer circumference of the insert core is provided with a clamping ring groove and a shaft shoulder; the knurled nut is sleeved on the lock pin, the clamping ring is matched with the clamping ring groove and sleeved on the clamping ring groove, the clamping ring is sleeved on the tail end of the lock pin, the tail connecting pipe is sleeved on the clamping ring, and the tail connecting pipe is sleeved on one end inner wall of the clamping ring and is provided with a groove matched with the clamping ring.

Preferably, the arc edge of the straight slot is semicircular, the straight edge length of the straight slot is identical to the diameter of the arc edge, and the diameter of the arc edge is identical to the outer diameters of the two optical fibers at the front end.

Preferably, a groove corresponding to the shaft shoulder is formed in the inner wall of the knurled nut.

Preferably, the tail connection pipe is in a round table shape.

Preferably, the taper of the round table of the tail connecting pipe is 5-10 degrees.

Preferably, the outer circumferential surface of the tail pipe is provided with annular reinforcing ribs.

Compared with the prior art, the utility model has the following technical effects:

1. the front end inner hole of the straight groove type inner hole optical fiber connector provided by the utility model is provided with the straight notch, the shape of the straight groove type inner hole optical fiber connector can be fully attached to the optical fiber size, and the optical fiber can be prevented from twisting due to the limitation of space, so that the two optical fibers are in a parallel state, and the consistency of products is ensured.

2. The arc edge of the front end straight slot opening of the straight slot type inner hole optical fiber connector provided by the utility model is semicircular, the straight edge length of the straight slot opening is the same as the diameter of the arc edge, the gap between the optical fiber and the connector can be reduced, the curing time of the optical fiber is effectively shortened, the edge breakage condition in the grinding process is reduced, and the production efficiency and the yield of the double-core optical fiber jumper wire are improved.

3. The tail connecting pipe of the straight groove type inner hole optical fiber connector provided by the utility model adopts the round platform structure with the annular reinforcing ribs arranged on the outer peripheral surface, so that the bending strength of the tail connecting pipe can be increased, the tail connecting pipe is prevented from being bent, and better protection is provided for the optical fiber inside.

4. The inner wall of the knurled nut of the straight groove type inner hole optical fiber connector provided by the utility model is provided with the groove corresponding to the shaft shoulder on the ferrule, so that the knurled nut can be freely rotated while being conveniently fixed, the installation efficiency of the connector when being connected with an external part is improved, and the convenience of connection is improved.

5. The straight groove type inner hole optical fiber connector provided by the utility model is provided with the tail connecting pipe sleeved on the compression ring, and the tail connecting pipe is in close contact with the compression ring through the sleeved matching of the tail connecting pipe and the compression ring, so that the tightness of a closed space can be further enhanced, the internal optical fiber is effectively protected, and the stability of optical fiber transmission is enhanced.

6. The straight groove type inner hole optical fiber connector provided by the utility model adopts a multi-layer sleeve structure of the ferrule, the knurled nut, the clamping ring and the tail connecting pipe, is convenient to install on the premise of ensuring the structural strength, and improves the installation efficiency of the connector.

Drawings

FIG. 1 is an exploded view of a straight female fiber optic splice for a dual-core fiber optic jumper according to the present utility model;

FIG. 2 is a front isometric view of a ferrule of a straight-slot female fiber optic connector for a dual-core fiber optic jumper according to the present utility model;

FIG. 3 is a rear isometric view of a ferrule of a straight-slot female fiber optic connector for a dual-core fiber optic jumper according to the present utility model;

FIG. 4 is a side view of a ferrule of a straight-slot female fiber optic connector for a dual-core fiber optic jumper according to the present utility model;

FIG. 5 is a schematic cross-sectional view of the front end of a straight female fiber optic splice for a dual-core fiber optic jumper according to the present utility model;

fig. 6 is a schematic view of a front end cross-section of a standard joint used in conventional processes.

Reference numerals: 1. a core insert; 2. knurled nuts; 3. a clasp; 4. a compression ring; 5. a tail connecting pipe; 6. an optical fiber; 11. a straight slot; 12. a snap ring groove; 13. and (5) a shaft shoulder.

Detailed Description

In order to make the objects, technical solutions and advantages of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the specific embodiments of the present application and with reference to the accompanying drawings.

Referring to fig. 1 to 5, a straight-groove type inner hole fiber optic connector for a dual-core optical fiber jumper according to the present embodiment includes: the device comprises a ferrule 1, a knurled nut 2, a clamping ring 3, a compression ring 4 and a tail connecting pipe 5; the lock pin 1 is provided with a shaft hole, the front end of the shaft hole is provided with a straight slot 11, the tail end of the shaft hole is provided with a round hole, and the outer circumference of the lock pin 1 is provided with a clamping ring groove 12 and a shaft shoulder 13; the knurled nut 2 is sleeved on the ferrule 1, the clamping ring 3 is matched with the clamping ring groove 12 and sleeved on the clamping ring groove 12, the clamping ring 4 is sleeved on the tail end of the ferrule 1, the tail connecting pipe 5 is sleeved on the clamping ring 4, and the tail connecting pipe 5 is sleeved on the inner wall of one end of the clamping ring 4 and is provided with a groove matched with the clamping ring 3.

The arc edge of the straight slot 11 is semicircular, the straight edge length of the straight slot 11 is identical to the diameter of the arc edge, and the diameter of the arc edge is identical to the outer diameters of the two optical fibers at the front end. The gap between the optical fiber and the connector can be reduced, the curing time of the optical fiber is effectively shortened, and the edge breakage in the grinding process is reduced, so that the production efficiency and the yield of the double-core optical fiber jumper wire are improved.

The inner wall of the knurled nut 2 is provided with a groove corresponding to the shaft shoulder 13, so that the knurled nut 2 can freely rotate relative to the insert core 1, but the knurled nut 2 is limited to move back and forth relative to the insert core 1.

The tail connecting pipe 5 is in a circular truncated cone shape, the taper of the circular truncated cone of the tail connecting pipe 5 is 5-10 degrees, and the outer circumferential surface of the tail connecting pipe 5 is provided with circular reinforcing ribs. The bending strength of the tail connecting pipe can be increased, the tail connecting pipe is prevented from being bent, and better protection is provided for the optical fiber inside.

The straight groove type inner hole joint serving as the beam combining end is connected with a laser, two branch ends are connected with a power meter, the two branch ends are subjected to wave transmission rate test, and compared with products produced by a conventional process, the double-core optical fiber jumper produced by the straight groove type inner hole joint has good wave transmission rate and consistency. The test data are shown in table 1:

TABLE 1

The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and improvements could be made by those skilled in the art without departing from the inventive concept, which falls within the scope of the present utility model.

Claims

1. A straight-groove female fiber optic connector for a dual-core fiber optic jumper, comprising: the device comprises a ferrule (1), a knurled nut (2), a clamping ring (3), a pressing ring (4) and a tail connecting pipe (5); the inserting core (1) is provided with a shaft hole, the front end of the shaft hole is provided with a straight slot (11), the tail end of the shaft hole is provided with a round hole, and the outer circumference of the inserting core (1) is provided with a clamping ring groove (12) and a shaft shoulder (13); the knurled nut (2) is sleeved on the ferrule (1), the clamping ring (3) is matched with the clamping ring groove (12) and sleeved on the clamping ring groove (12), the clamping ring (4) is sleeved on the tail end of the ferrule (1), the tail connecting pipe (5) is sleeved on the clamping ring (4), and the tail connecting pipe (5) is sleeved on the inner wall of one end of the clamping ring (4) is provided with a groove matched with the clamping ring (3).

2. The straight-groove type inner-hole optical fiber connector for the dual-core optical fiber jumper wire according to claim 1, wherein the arc edge of the straight groove opening (11) is semicircular, the straight edge length of the straight groove opening (11) is the same as the diameter of the arc edge, and the diameter of the arc edge is the same as the outer diameters of two optical fibers at the front end.

3. A straight female fiber optic splice for a dual core fiber optic jumper according to claim 1, wherein the knurled nut (2) has an inner wall provided with a groove corresponding to the shoulder (13).

4. A straight female fiber optic splice for a dual core fiber optic jumper according to claim 1, wherein the pigtail tube (5) is frustoconical.

5. A straight female fiber optic splice for dual core fiber optic jumpers as claimed in claim 4 wherein the frustoconical taper of the pigtail tube (5) is 5 to 10 degrees.

6. A straight female fiber optic splice for a dual core fiber optic jumper according to claim 1, wherein the outer peripheral surface of the pigtail tube (5) is provided with annular reinforcing ribs.