CN209821433U

CN209821433U - Optical fiber connection port

Info

Publication number: CN209821433U
Application number: CN201920842024.XU
Authority: CN
Inventors: 王韵
Original assignee: Hunan Post And Telecommunication College
Current assignee: Hunan Post And Telecommunication College
Priority date: 2019-06-05
Filing date: 2019-06-05
Publication date: 2019-12-20
Anticipated expiration: 2029-06-05

Abstract

The optical fiber connection port comprises a first sleeve, a second sleeve, an inner container tube and a guide sleeve, wherein a clamping ring is formed on the first sleeve, a spring is sleeved on the inner side of the clamping ring, a threaded surface is formed on the outer side of the clamping ring, and a plurality of arc-shaped reeds facing the second sleeve are formed on the annular surface of the clamping ring; one end of the inner container pipe is fixedly connected with the second sleeve pipe, and the other end of the inner container pipe is sleeved on the inner side of the first sleeve pipe and abuts against the spring; the guide sleeve is sleeved on the first sleeve, the outer side of the guide sleeve is provided with a hole, the guide sleeve is in threaded fit with the first sleeve at the position of the hole, the inner side of the guide sleeve is an arc surface with continuously increased radian, and the arc reed can be tightly pressed and propped against the guide sleeve by screwing the guide sleeve at the threaded position. The utility model discloses simple structure, be convenient for assembly, connection stability are good, and intensity is high, and can carry out and keep joint strength after the dismouting many times, can generally use widely.

Description

Optical fiber connection port

Technical Field

The utility model relates to an optical fiber communication accessory field specifically is an optical fiber connection port.

Background

In an optical fiber communication system, when there is a connection need between equipment and the system, a port connection process is often required to be performed on an optical fiber in a transmission link of the optical fiber communication, which often requires an optical fiber connector, which is a detachable connection unit for connecting a transmitting optical fiber and a receiving optical fiber, and which precisely connects two end faces of the optical fiber together, so that optical energy output by the transmitting optical fiber can be transmitted according to a required channel, the optical fiber can be coupled into the receiving optical fiber to the maximum extent, and the influence of the connection part on the system is minimized.

In the prior art, when the optical fiber connector is installed, the connector or the inner core of the adapter needs to be aligned with the optical fiber finely, and then the optical fiber is fixed and abutted against the optical fiber connector by using the fixing structure, so that the optical fiber is quickly inserted. However, the conventional optical fiber connector in the prior art is generally simple in structure, and is fixed only by using a fixing structure in a single form, such as a plug-in connector or a plug-in buckle, which is easy to loosen after long-term use, and the connector part is also easy to bend and deform, thereby damaging the internal optical fiber, easily causing the situation of inaccurate installation or improper fixation, reducing the stability of the optical fiber circuit operation, increasing the failure rate, failing to protect the mating connector and the optical fiber from adverse environment and machinery (such as side load, rotational force and tensile force), and being not suitable for being applied in intensive installation of an optical distribution frame, an optical distribution cabinet and the like.

SUMMERY OF THE UTILITY MODEL

The technical problem solved by the present invention is to provide an optical fiber connection port to solve the above-mentioned defects in the technical background.

The utility model provides a technical problem adopt following technical scheme to realize:

the optical fiber connection port comprises a first sleeve, a second sleeve, a liner tube and a guide sleeve, wherein the first sleeve and the second sleeve are respectively connected with optical fibers, a clamp ring is formed on the first sleeve, a spring is sleeved on the inner side of the clamp ring, a threaded surface is formed on the outer side of the clamp ring, and a plurality of arc-shaped reeds facing the second sleeve are formed on the annular surface of the clamp ring; the inner bile duct is a frustum-shaped casing with a small pipe diameter at the end of the first casing pipe and a large pipe diameter at the end of the second casing pipe, one end of the inner bile duct is fixedly connected with the second casing pipe, and the other end of the inner bile duct is sleeved on the inner side of the first casing pipe and abuts against the spring; the guide sleeve is sleeved on the first sleeve, the outer side of the guide sleeve is provided with a hole, an internal thread is arranged at the hole opening position and is in threaded fit with a threaded surface on the first sleeve, the inner side of the guide sleeve is an arc surface with continuously increased radian, and the arc reed can be tightly pressed and abutted against the guide sleeve by screwing the guide sleeve at the threaded position.

As a further improvement, an annular groove is formed in the pipe surface of the first sleeve, the clamping ring is an elastic material ring, a notch is formed in the ring surface of the clamping ring, the clamping ring is clamped in the annular groove, and the clamping ring can be replaced by flaring the clamping ring at the position of the notch.

As a further improvement, the number of the arc-shaped reeds arranged on the ring surface of the snap ring is preferably 4 ~ 6.

As a further improvement, the cambered surface of the arc reed faces towards the optical fiber and is symmetrically distributed on the ring surface of the clamping ring in a circle center mode.

As a further improvement, the fixed connection mode of the inner bile duct and the second sleeve is one or a combination of insertion connection, clamping connection or threaded connection.

As a further improvement, the surface of the pipe body of the inner liner pipe is provided with an arc reed groove matched with the arc reed, and the arc reed is inserted in the arc reed groove when being sleeved, so that the rotation and radial jumping can be effectively reduced.

As a further improvement, a limiting groove matched with the section of the first sleeve is arranged on the inner side of the liner tube, the limiting groove is a limiting groove with a positioning structure, and the positioning structure is preferably a notch or a pin hole arranged on the ring surface.

As a further improvement, a sealing ring is arranged at the position of a gap between the inner side of the guide sleeve and the inner container tube for sealing.

As a further improvement, the connecting parts of the first sleeve and the second sleeve and the optical fibers are preferably in a frustum structure with a twisting groove, so that the insertion or twisting operation is convenient.

Has the advantages that: the utility model discloses an improve optical fiber connection port, can effectively improve the intensity that optic fibre both ends are connected, more firm engaging force has, make optic fibre obtain the protection in the junction, the connection stability of optic fibre has been improved greatly, thereby the alignment precision of optic fibre has been guaranteed, even carry out the split many times, still can keep assembly stability after the assembly, and simultaneously, can effectively reduce the safety in utilization performance who connects the position through two sleeve pipe structures, the spring that sets up on its first sleeve pipe position, enable connected node and can bear bigger bending deformation, thereby protect optic fibre, the effect of use is also better for traditional mode.

Drawings

Fig. 1 is a schematic structural diagram of a preferred embodiment of the present invention.

Wherein: 1. a second optical fiber; 2. a second sleeve; 3. an inner bile duct; 4. a seal ring; 5. a second thread face; 6. an insulating resin surface; 7. a metal liner tube; 8. a spring; 9. a snap ring; 10. a first sleeve; 11. a first thread face; 12. a pin hole; 13. an arc-shaped reed groove; 14. an arc reed; 15. a first optical fiber.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further explained by combining with the specific drawings.

Referring to fig. 1, in the present embodiment, the optical fiber connection port includes a first ferrule 10 and a second ferrule 2, the first ferrule 10 and the second ferrule 2 are respectively used for connecting a first optical fiber 15 and a second optical fiber 1, and connection portions of the first ferrule 10, the second ferrule 2, the first optical fiber 15 and the second optical fiber 1 are frustum-shaped structures with twisting grooves, so as to facilitate the insertion or twisting operation. The first optical fiber 15 and the second optical fiber 1 are rapidly spliced through the combination of the first sleeve 10, the second sleeve 2, the inner liner tube 3 and the guide sleeve, and after the splicing is completed, the hollow through cavity for accommodating the optical fibers in the first sleeve 10, the second sleeve 2 and the inner liner tube 3 is in the same straight line with the central axis of the guide sleeve.

In this embodiment, an annular groove is formed on the casing pipe body of the first casing pipe 10, the snap ring 9 is clamped through the annular groove, four arc-shaped reeds 14 facing the second casing pipe 2 are formed on the annular surface of the snap ring 9, the arc-shaped reeds 14 face the optical fiber side, and are symmetrically distributed on the annular surface of the snap ring 9 in the circle center direction, and the arc-shaped reeds 14 abut against the inner bile duct 3 after the assembly is completed. The inner liner tube 3 is a frustum-shaped sleeve with a small end pipe diameter of the first sleeve tube 10 and a large end pipe diameter of the second sleeve tube 2, a corresponding inserting interface corresponding to the first optical fiber 15 and the second optical fiber 1 is arranged in the inner liner tube 3, arc-shaped reed grooves 13 matched with the number and the radian of the arc-shaped reeds 14 are formed in the surface of the outer tube body of the inner liner tube 3, a pin hole 12 serving as a positioning structure is formed in the part, inserted into the inner liner tube 3, of the first sleeve tube 10, and the arc-shaped reeds can be inserted into the arc-shaped reed grooves to prevent the inner liner tube 3 and the first sleeve tube 10 from rotating relatively and jumping radially to improve the connection stability due to the fact that the arc-shaped reeds are arranged in the arc-shaped reed grooves when. In addition, a spring 8 is arranged between the inner side of the snap ring 9 of the first sleeve 10 and the inner liner pipe 3, and both sides of the spring 8 respectively abut against the snap ring 9 and the end surface of the inner liner pipe 3.

The second sleeve 2 is provided with a second thread surface 5, and the second sleeve 2 is connected and fixed with the inner container pipe 3 through the second thread surface 5. The guide sleeve comprises a metal liner tube 7 directly contacted with the arc-shaped reed 14 and an insulating resin surface 6 formed on the outer side of the metal liner tube 7, the guide sleeve is sleeved on the first sleeve 10, the first sleeve 10 is provided with a hole corresponding to the perforation position of the first optical fiber 15, the hole is in threaded connection and matching with the first sleeve 10 at the position of the first threaded surface 11, the first sleeve 10 can be screwed towards the inner bile duct 3 by applying torque on the insulating resin surface 6, and in the screwing process, the arc-shaped reed can be pressed and abutted against the metal liner tube 7 and the inner bile duct 3 due to the fact that the inner side of the metal liner tube 7 of the guide sleeve is an arc surface with continuously increased radian, and therefore limiting and pressing effects are achieved.

Meanwhile, in the embodiment, a sealing ring 4 is arranged at the gap position between the inner side outer edge of the metal liner tube 7 of the guide sleeve and the inner liner tube 3 for sealing.

In another embodiment, an annular groove is formed on the pipe surface of the first sleeve 10, the snap ring 9 is an elastic annular steel ring, a gap is formed on the annular surface of the snap ring, the snap ring 9 is clamped in the annular groove, and the snap ring can be replaced by flaring the snap ring 9 at the gap position, so that the normal use of the first sleeve 10 can be effectively ensured, and only the snap ring 9 is replaced in a fatigue state.

In addition, in order to save cost, the first sleeve 10 is a disposable consumable, and the snap ring 9 is directly formed on the first sleeve 10 and integrally formed with the first sleeve 10, so that the snap ring 9 can be integrally formed with the first sleeve 10 to effectively reduce production cost, but the use effect is correspondingly reduced.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. Moreover, it should also be understood that after reading the technical content of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work based on the embodiments of the present invention belong to the protection scope of the present invention.

Claims

1. The optical fiber connection port is characterized by comprising a first sleeve, a second sleeve, a liner tube and a guide sleeve, wherein the first sleeve and the second sleeve are respectively connected with optical fibers, a clamping ring is formed on the first sleeve, a spring is sleeved on the inner side of the clamping ring, a threaded surface is formed on the outer side of the clamping ring, and a plurality of arc-shaped reeds facing the second sleeve are formed on the annular surface of the clamping ring; the inner bile duct is a frustum-shaped casing with a small pipe diameter at the end of the first casing pipe and a large pipe diameter at the end of the second casing pipe, one end of the inner bile duct is fixedly connected with the second casing pipe, and the other end of the inner bile duct is sleeved on the inner side of the first casing pipe and abuts against the spring; the guide sleeve is sleeved on the first sleeve, the outer side of the guide sleeve is provided with a hole, an internal thread is arranged at the hole opening position and is in threaded fit with a threaded surface on the first sleeve, the inner side of the guide sleeve is an arc surface with continuously increased radian, and the arc reed can be tightly pressed and abutted against the guide sleeve by screwing the guide sleeve at the threaded position.

2. The fiber optic connection port of claim 1, wherein the first sleeve has an annular groove formed in a surface thereof, and the retainer ring is a ring of resilient material having a gap formed in an annular surface thereof, the retainer ring being retained in the annular groove and being replaceable by flaring the retainer ring at the gap.

3. The fiber optic connection port of claim 1, wherein the number of arcuate leaves provided on the snap ring annulus is 4 ~ 6.

4. The fiber optic connection port of claim 1, wherein the inner barrel and the second cannula are fixedly connected by one or a combination of a bayonet connection, a snap connection, or a threaded connection.

5. The fiber optic connection port of claim 1, wherein the inner barrel has an arcuate reed groove formed in a surface thereof for engaging an arcuate reed received in the arcuate reed groove.

6. The fiber optic connection port of claim 1, wherein a retaining groove is disposed on an inner side of the inner bile duct to match a profile of the first cannula.

7. The fiber optic connection port of claim 6, wherein the retaining groove is a retaining groove with a locating feature, and the locating feature is preferably a notch or pin hole disposed on the torus.

8. The fiber optic connection port of claim 1, wherein a sealing ring is disposed at a gap between an inner side of the guide sleeve and the inner tube for sealing.

9. The fiber optic connection port of claim 1, wherein the first and second ferrules and fiber optic connection portions are frustoconically shaped structures with twist grooves.