CN210427865U

CN210427865U - Optical fiber connector

Info

Publication number: CN210427865U
Application number: CN201921390127.3U
Authority: CN
Inventors: 虞德庆
Original assignee: 虞德庆
Current assignee: Dongguan Qingying Industry Co.,Ltd.
Priority date: 2019-08-23
Filing date: 2019-08-23
Publication date: 2020-04-28
Anticipated expiration: 2029-08-23

Abstract

The utility model discloses an optical fiber connector. The optical fiber splicing device comprises a front shell containing prefabricated optical fibers and a rear shell used for being provided with a splicing optical cable for stripping the optical fibers to form the splicing optical fibers; the middle shell is connected between the front shell and the rear shell in a jogged mode; the prefabricated optic fibre of preceding shell passes the mesochite, and in the backshell with the butt joint optic fibre butt joint that the backshell was installed adopts the utility model provides a technical scheme has solved current fiber connector and has leaded to the optical cable to be easily pulled off to the optical cable guard action inadequately, and the technical problem that the packaging efficiency is low.

Description

Optical fiber connector

Technical Field

The utility model relates to a communication equipment technical field especially relates to an optical fiber connector.

Background

With the continuous development of optical communication technology, China gradually realizes the copper feeding and the copper returning of light and the fiber arrival at home. The optical fiber connector is an indispensable connecting component in the current optical fiber communication system, and is widely applied to optical fiber butt joint, optical fiber butt joint equipment, optical fiber butt joint instruments and the like. The optical fiber connector is used for precisely butting two optical fiber end faces, so that optical energy is coupled and received to the maximum extent, transmission loss is reduced, and meanwhile, in order to ensure that signal transmission is stable and reliable, the optical fiber end faces cannot rotate, rock or deviate after being butted.

However, the existing optical fiber connector has insufficient stability after installation, and particularly, when the tail optical cable is pulled by a large force, the tail optical cable is easy to be pulled off, so that the problem of unstable transmission signals occurs, the normal transmission of the signals is influenced, and even the phenomenon of optical fiber transmission interruption is caused; in addition, in order to ensure the stability of optical cable connection when the optical fibers are communicated on site, a threaded locking structure is often adopted, so that the operation is complicated in the assembling process, and the optical fiber assembling efficiency is influenced.

Therefore, there is a need for a fiber optic connector that can withstand a large pulling force without being pulled off and can be assembled quickly, ensuring stable transmission signals.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an optical fiber connector adopts the utility model provides a technical scheme has solved current optical fiber connector and has leaded to the optical cable to be easily pulled off to the optical cable guard action inadequately, and the technical problem that packaging efficiency is low.

In order to solve the technical problem, the utility model provides an optical fiber connector, which comprises a front shell containing prefabricated optical fibers and a rear shell used for installing a butt-joint optical cable for stripping the optical fibers to form butt-joint optical fibers; the middle shell is connected between the front shell and the rear shell in a jogged mode; the prefabricated optical fiber of the front shell penetrates through the middle shell and is in butt joint with the butt joint optical fiber arranged on the rear shell in the rear shell.

Preferably, a heat-shrinkable tube for wrapping the prefabricated optical fiber and the butted optical fiber is further arranged in the rear shell; one end of the middle shell extends along the butt joint direction to form a protruding part for wrapping the heat shrinkable tube.

Preferably, a protrusion is formed on an outer side wall of the protrusion along a radial direction of the protrusion.

Preferably, the middle shell and the front shell and the middle shell and the rear shell are connected in a jogged mode through first buckling structures.

Preferably, the inner walls of the front shell and the rear shell are both provided with clamping grooves, and two ends of the middle shell are respectively provided with a first buckle buckled with the clamping grooves; the clamping groove and the first buckle form a first buckle structure.

Preferably, the rear shell comprises a groove-shaped fixed seat for accommodating and fixing the optical cable and a turnover cover pivoted to one end of the fixed seat; the flip cover covers the fixed seat to form an accommodating cavity for accommodating the heat shrink tube.

Preferably, the fixed seat is connected to the middle shell at one end of the pivoted cover, and two rows of zigzag fixture blocks which are arranged oppositely are formed on the inner side wall of the other end of the fixed seat.

Preferably, the flip cover is provided with a through hole at the movable end; and a second buckle buckled with the through hole of the flip cover is formed on the outer side wall of the fixed seat at the position of the serrated clamping block.

Preferably, two opposite side walls of the movable end of the flip cover extend along the axial direction of the flip cover to form a protruding handle.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model has the advantages of it is following:

(1) the middle shell is connected between the front shell and the rear shell of the optical fiber connector in an embedded mode, the embedded connection adopts a buckle structure, the fast and efficient assembling effect can be achieved when the on-site optical fiber is assembled, and the optical fiber assembling efficiency is improved;

(2) one end of the middle shell extends along the butt joint direction to form a protruding part wrapped by the heat supply shrink tube, the outer side wall of the protruding part is provided with a protrusion along the radial direction of the protruding part, the heat shrink tube is shrunk and wrapped on the protruding part to improve the friction force of the joint of the parts and resist larger external tension, the heat shrink tube wraps the protrusion to form a buckle structure, and the tensile resistance effect of the joint of the optical fibers is further improved;

(3) the two opposite side walls at the movable end part of the turning cover extend along the axial direction of the turning cover to form a protruding handle, so that when an operator opens the turning cover, the operator can easily open the buckling structure of the turning cover and the fixed seat only by applying force outwards along the width direction of the turning cover; simple structure and convenient operation.

(4) This use is novel to adopt combined action to improve the tensile effect of optical cable between a plurality of structures. Such as the saw-toothed clamping blocks on the fixed seat, the buckling structures between the front shell and the middle shell and between the rear shell and the middle shell, the interaction between the protruding part of the middle shell and the heat-shrinkable tube, and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic structural diagram of an intermediate of the present invention;

FIG. 3 is a schematic view of the structure of the rear case of the present invention;

FIG. 4 is a schematic view of a part of the structure of the present invention;

fig. 5 is a cross-sectional view of the overall structure of the present invention.

Wherein: 10. a front housing; 11. a clamping groove; 20. a rear housing; 21. a fixed seat; 211. a second buckle; 212. a clamping block; 22. A cover is turned; 221. a through hole; 30. a middle shell; 31. a protrusion portion; 311. a protrusion; 32. a first buckle; 40. heat shrink tubing; 50. An optical cable; 51. suitable length 51.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example 1

Present fiber connector stability is not enough after the installation, especially receives being pulled easily when dragging of great dynamics at afterbody optical cable 50 and takes off, appears the unstable problem of transmission signal, has influenced the normal transmission of signal, has caused the phenomenon that optical fiber transmission interrupted even, and in order to solve this technical problem, this embodiment provides following technical scheme:

it should be noted that, a complete optical fiber connector further includes a front shell 10, a rear shell 20, an outer frame, a front pressing plate, a rear pressing plate, a V-groove supporting member, a spring, a U-shaped elastic sheet, a cable locking mechanism, a key, and a plug core, the optical fiber connector provided in this embodiment can be assembled with the above structure, but the technical features of this embodiment are the mutual matching among the middle shell 30, the front shell 10, and the rear shell 20 and the improvement of the rear shell 20, so the details of other parts of the optical fiber connector are not described.

Referring to fig. 1-2, the present embodiment includes a front shell 10 containing prefabricated optical fibers, a rear shell 20 for accommodating a stub cable 50 stripped to form stub optical fibers, and an intermediate shell 30 fittingly connected between the front shell 10 and the rear shell 20.

The optical cable 50 at the other end of the construction site is stripped and cut only once, and compared with other construction schemes, the optical cable 50 at 2 heads is stripped and cut for 2 times, so that the construction efficiency is improved, and the construction cost is reduced.

Specifically, a cavity is formed in the middle shell 30 for the prefabricated optical fiber of the front shell 10 to pass through and to be butted against the butted optical fiber installed in the rear shell 20.

In order to make the connection between the middle case 30 and the front case 10 and between the middle case 30 and the rear case 20 more stable, and at the same time, to be more easily disassembled during a construction process or an overhaul process.

Specifically, the middle shell 30 and the front shell 10 and the middle shell 30 and the rear shell 20 are both connected by a first buckle 32, the inner walls of the front shell 10 and the rear shell 20 are both provided with a buckling groove 11, and the two ends of the middle shell 30 are respectively provided with a first buckle 32 buckled with the buckling groove 11.

Specifically, the engaging groove 11 of the first catch 32 may be a through hole 221, and the structure is not limited to the engaging groove 11, and may be any structure that can engage with the first catch 32 of the middle case 30.

The prior art improvement on the tensile strength of the optical cable 50 is mostly improvement on the shell for wrapping the optical cable 50, and there is no good solution for how to effectively resist the action force directly applied to the optical cable 50. In order to solve the technical problem, the present embodiment provides the following technical solutions:

a heat shrink tube 40 wrapping the prefabricated optical fiber and the butted optical fiber is also arranged in the rear shell 20; one end of the middle shell 30 extends along the butt joint direction to form a protruding part 31 for wrapping the contracted pipe.

The specific working principle is as follows: when an operator performs optical fiber butt joint, the optical cable 50 is removed from the PE tube and cut to an appropriate length 51 by an optical fiber cutter on a tool, and then the optical fiber is fed into an optical fiber fusion splicer to be fused with the prefabricated optical fiber of the front shell 10, and during the fusion splicing process, the heat shrinkable tube 40 is sleeved on the connection part of the two optical fibers and is also wrapped inside the protrusion 31.

Specifically, the outer sidewall of the protrusion 31 may be provided with a rough surface to increase the friction between the protrusion 31 and the heat shrinkable tube 40, thereby improving the tensile strength of the optical cable 50.

In order to further increase the interaction force between the protrusion 31 and the heat shrinkable tube 40, the present embodiment provides the following technical solutions:

referring to fig. 2, a protrusion 311 is formed on the outer side wall of the protrusion 31 along the radial direction of the protrusion 31. In the process of wrapping the protrusion 31 by the heat shrinkable tube 40, the heat shrinkable tube 40 at the protrusion 311 is recessed inwards to form a similar snap structure, so as to further improve the interaction force between the heat shrinkable tube 40 and the protrusion 31.

Specifically, the protrusion 311 may be an annular structure formed along the circumferential direction of the protrusion 31, and a plurality of protrusions may be arranged along the axial direction of the protrusion 31 to form a structure similar to a thread;

specifically, the protrusions 311 may be column-shaped protrusions 311, and the number of the protrusions is two or more; at least two protrusions 311 are provided symmetrically with respect to the axial direction of the protrusion 31.

Example 2

In order to make the optical fiber connection easy to overhaul and observe and further improve the tensile effect of the optical cable 50, the embodiment provides the following technical solutions:

referring to fig. 1-5, the present embodiment provides an optical fiber connector, which includes a front shell 10 containing prefabricated optical fibers, a rear shell 20 for installing a butt-jointed optical cable 50 formed by stripping fibers to form a butt-jointed optical fiber, and a middle shell 30 connected between the front shell 10 and the rear shell 20 in an embedded manner, wherein one end of the middle shell 30 extends along a butt-jointing direction to form a protrusion 31 wrapped by a heat shrinkable tube 40, and a protrusion 311 is formed on an outer side wall of the protrusion 31 along a radial direction of the protrusion 31; the pre-fabricated optical fibers of the front housing 10 pass through the middle housing 30 and are butted within the rear housing 20 with the butted optical fibers provided in the rear housing 20.

Referring to fig. 3, as a further improvement of the technical solution, the present embodiment is different from embodiment 1 in that the rear case 20 includes a fixing base 21 in a groove shape for accommodating and fixing the optical cable 50 and a flip 22 pivoted to one end of the fixing base 21; the flip 22 covers the fixed seat 21 to form an accommodating cavity for accommodating the heat shrinkable tube 40.

Specifically, when the staff needs to detect the connection end of the optical cable 50, only the flip 22 is needed for detection; after the detection is finished, the turning cover 22 is covered on the fixed seat 21 to protect the optical cable 50 inside, and the detection operation is simple, convenient and quick.

In order to further improve the tensile strength of the optical cable 50 and better protect the optical cable 50, the following technical solutions are provided in this embodiment:

specifically, the fixing base 21 is connected to the middle shell 30 at one end of the flip 22, and two rows of zigzag fixture blocks 212 are formed on the inner side wall of the other end of the fixing base 21. The optical cable 50 passes through the oppositely arranged sawtooth-shaped fixture blocks 212, and the fixture blocks 212 are clamped on the optical cable 50 and generate friction with the skin of the optical cable 50, so that the optical cable 50 is not easy to be drawn by external force, and the influence of the external force on the optical cable 50 is better reduced.

In order to make the flip 22 better cover the fixed seat 21, the flip is not easily affected by external force.

Specifically, the flip 22 has a through hole 221 formed at the movable end; the outer side wall of the fixing base 21 is formed with a second buckle 211 buckled with the through hole 221 of the flip 22 at the position of the serrated latch 212. The flip 22 is fastened on the fixed seat 21 through the second fastener 211 structure, so that the flip is not easy to be flipped up by external force; the flip cover 22 is fastened to the fixing base 21 to protect the optical cable 50, and the second fastening structure is disposed on the outer sidewall of the fixing base 21 at the serrated fastening block 212. When the buckling effect is achieved, two opposite side walls on the fixing seat 21 are further clamped, namely the clamping force of the sawtooth-shaped clamping blocks 212 on the optical cable 50 is larger, the friction force is increased accordingly, the optical cable 50 is not easy to be pulled by external force, and the tensile effect of the optical cable 50 is improved.

After the flip 22 is fastened to the fixing base 21, it is hard to open the flip 22 because there is no better point of application. In order to solve the technical problem, the present embodiment provides the following technical solutions:

specifically, two opposite side walls of the movable end of the flip 22 extend along the axial direction of the flip 22 to form a handle 311. When the operator needs to open the flip 22, the operator only needs to apply force to the handle of the protrusion 311 along the width direction of the flip 22, and the second fastener 211 structure can be released to open the flip 22.

By adopting the technical scheme of the embodiment, the following advantages are achieved:

(1) the mode of the flip 22 and the arrangement of the handle of the protrusion 311 ensure that the site construction is convenient and fast;

(2) the flip 22 does not bear tension, and the thick and heavy rear bottom shell and tooth locking cable structure enable the whole body to meet the tension-resistant requirement;

(3) the optical fiber connector of the embodiment can be suitable for a common 2.0 × 3.0mm covered optical cable 50, and the teeth spacing of the bottom shell cable locking part can be adapted to other specifications of optical cables 50 after modification, such as 0.9mm tightly-packed optical cables 50, indoor cables with diameters of 2.0 and 3.0, or 1.6 × 2.0 low-friction butterfly-shaped optical cables 50 used abroad;

(4) the plastic part is easy to be injected, the number of assembled parts is small, and the cost is low;

(5) the proper length 51 is stripped and cut in advance in a factory, the fiber stripping and cutting of the optical cable 50 at the other end of the construction site are only needed once, and in other schemes, the fiber stripping and cutting of 2 optical cables 50 are needed for 2 times, so that the construction efficiency is improved, and the construction cost is reduced.

(6) The standard LC spring, the standard LC front shell 10 and the standard LC plug core with the tail seat which are manufactured in large batch and have lower cost are used, and the product cost is reduced.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any form, and all the modifications and equivalents of the technical spirit of the present invention to any simple modifications of the above embodiments belong to the scope of the technical solution of the present invention.

Claims

1. An optical fiber connector, characterized by: the optical fiber splicing device comprises a front shell containing prefabricated optical fibers and a rear shell used for being provided with a splicing optical cable for stripping the optical fibers to form the splicing optical fibers; the middle shell is connected between the front shell and the rear shell in a jogged mode; the prefabricated optical fiber of the front shell penetrates through the middle shell and is in butt joint with the butt joint optical fiber arranged on the rear shell in the rear shell.

2. The fiber optic connector of claim 1, wherein: a heat-shrinkable tube for wrapping the prefabricated optical fiber and the butted optical fiber is also arranged in the rear shell; one end of the middle shell extends along the butt joint direction to form a protruding part for wrapping the heat shrinkable tube.

3. The fiber optic connector of claim 2, wherein: a protrusion is formed on the outer side wall of the protrusion along the radial direction of the protrusion.

4. The fiber optic connector of claim 3, wherein: the middle shell and the front shell and the middle shell and the rear shell are connected through a first buckle structure in a chimeric mode.

5. The fiber optic connector of claim 4, wherein: clamping grooves are formed in the inner walls of the front shell and the rear shell, and first buckles buckled with the clamping grooves are formed at two end parts of the middle shell respectively; the clamping groove and the first buckle form a first buckle structure.

6. The fiber optic connector of claim 5, wherein: the rear shell comprises a groove-shaped fixed seat for accommodating and fixing the optical cable and a turnover cover pivoted to one end of the fixed seat; the flip cover covers the fixed seat to form an accommodating cavity for accommodating the heat shrink tube.

7. The fiber optic connector of claim 6, wherein: the fixed seat is connected to the middle shell at one end of the pivoted cover, and two rows of zigzag clamping blocks which are oppositely arranged are formed on the inner side wall of the other end of the fixed seat.

8. The fiber optic connector of claim 7, wherein: the flip cover is provided with a through hole at the movable end; and a second buckle buckled with the through hole of the flip cover is formed on the outer side wall of the fixed seat at the position of the serrated clamping block.

9. The fiber optic connector of claim 8, wherein: two opposite side walls at the movable end part of the flip cover extend along the axial direction of the flip cover to form a protruding handle.