CN212675224U

CN212675224U - Optical fiber fixing structure and optical fiber connector

Info

Publication number: CN212675224U
Application number: CN202021348786.3U
Authority: CN
Inventors: 张登平; 张康健; 赵毅; 赵勇; 黄李坤; 郑忠
Original assignee: Jiangsu Unikit Optical Technology Co Ltd
Current assignee: Jiangsu Unikit Optical Technology Co Ltd
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2021-03-09
Anticipated expiration: 2030-07-10

Abstract

The utility model relates to the field of optical fiber connectors, in particular to an optical fiber fixing structure and an optical fiber connector; the box body is provided with an accommodating part, and a V-shaped groove is formed in the bottom of the accommodating part; a limiting support part is also arranged in the accommodating part; the box cover is arranged on the accommodating part and can be separated from the accommodating part, and at least two steps which are sequentially lifted are arranged on the top surface at the position corresponding to the V-shaped groove; the push pipe can slide back and forth along the box body and the box cover arranged in the box body, can move to the condition that at least two steps are extruded by the bottom surfaces of the steps so as to force the bottom surfaces to move towards the V-shaped groove to lock the external optical fiber inserted into the connector, and can move to the condition that at least one step bottom surface is separated from the step so as to enable the box cover to rebound, so that the external optical fiber can be freely inserted into the box cover or the external optical fiber fixed in the connector can be unlocked.

Description

Optical fiber fixing structure and optical fiber connector

Technical Field

The utility model mainly relates to an optical fiber connector field especially relates to an optic fibre fixed knot constructs and optical fiber connector.

Background

Optical fiber connectors are essential components for optical communications and related equipment, and particularly, for the rapid development of 5G technology, the demand for optical fiber connectors is enormous. The optical fiber connector is mainly divided into: 1. the molded connector has the length of the optical cable which is a fixed optical fiber jumper, and the product can only be used in specific occasions because the optical fiber connector has no assembly capability because the optical fiber connector is molded, and is not suitable for actual wiring installation on a complex field; 2. the field assembly type connector has the field assembly function, can be installed on site after the optical cable wiring is finished, and has high flexibility.

For field assembly type connectors, which are mainly classified into a clamp spring type and a box type, as disclosed in application No. 201380001105.2, applied to takraw of manmade corporation, fig. 25 in the patent entitled optical fiber connector, a clamp spring type structure is disclosed, which mainly realizes the fixation of an optical fiber by a clamp spring 68 in cooperation with a cover member 66; and the case formula is mainly pushed the case lid that is equipped with a step down through the ejector sleeve when promoting to fixed optic fibre, such structure is owing to need extrude the step, and consequently the stroke that the ejector sleeve removed is longer, is unfavorable for the miniaturization and the equipment of connector.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides an optic fibre fixed knot constructs and fiber connector now, the utility model discloses a realize through following technical scheme:

an optical fiber fixing structure comprising:

the box body is provided with a front end for configuring the ceramic ferrule and a tail end opposite to the front end, the box body is provided with an accommodating part, and the bottom of the accommodating part is provided with a V-shaped groove; the box body is also provided with a limiting supporting part;

a case cover provided in the accommodating portion and separable from the accommodating portion, and having a bottom surface facing the V-shaped groove and a top surface opposite to the bottom surface; at least two steps which are sequentially raised are arranged on the top surface at the position corresponding to the V-shaped groove; the box cover is arranged on the limiting support part, the front and back positions are limited by the limiting support part and the box cover is supported by the limiting support part in a springback mode, the bottom face is enabled to move towards the V-shaped groove, and when the box cover is in a free state, the external optical fibers can be freely inserted into the V-shaped groove;

the push pipe at least surrounds the box body and a part of the box cover arranged in the box body; the box cover is provided with at least two step bottom surfaces corresponding to the at least two steps; the push pipe can slide back and forth along the box body and the box cover arranged in the box body, and can move to the condition that at least two steps are extruded by the bottom surfaces of the steps so as to force the bottom surfaces to move towards the V-shaped groove to lock the external optical fiber inserted into the connector, and move to the condition that at least one step is separated from the step so as to enable the box cover to rebound, so that the external optical fiber can be freely inserted into the box cover or the external optical fiber fixed in the connector can be unlocked.

Preferably, the V-groove is configured to have a bare fiber V-groove near the front end and in communication with the ferrule and a coated layer V-groove near the rear end.

Preferably, at least two steps are provided on the top surface at positions corresponding to the bare fiber V-grooves.

Preferably, the limiting support part is configured such that a clamping groove is formed in a position of the accommodating part close to the front end, and limiting support blocks are arranged on two sides of a position where the bare fiber V-shaped groove and the coating layer V-shaped groove are connected;

the box cover is provided with an extension arm corresponding to the clamping groove, and is provided with a bare fiber V-shaped groove pressing block and a coating layer V-shaped groove pressing block, a connecting arm is arranged between the bare fiber V-shaped groove pressing block and the coating layer V-shaped groove pressing block, the connecting arm is used for being arranged on the limiting supporting block, and meanwhile, the front position and the rear position of the bare fiber V-shaped groove pressing block are limited at least through the inner wall of the accommodating part close to the front end and the limiting supporting block.

Preferably, the bottom surface of the coating layer V-groove pressing block is provided with an extrusion beam corresponding to the coating layer V-groove.

Preferably, a tapered guide groove gradually facing the bare fiber V-shaped groove is formed at a junction of the bare fiber V-shaped groove and the coating V-shaped groove.

Preferably, the height difference between at least two of the steps is the same.

Preferably, each step is transited by a slope.

Preferably, an avoiding opening for avoiding the slope is arranged between the bottom surfaces of the steps, and when the push pipe moves to at least one of the bottom surfaces of the steps to separate from the steps so that the box cover rebounds, the avoiding opening corresponds to the slope.

The utility model discloses provide a fiber connector simultaneously, for fiber connector including above-mentioned optic fibre fixed knot structure.

The utility model has the advantages that:

the utility model provides an optic fibre fixed knot constructs and fiber connector is through setting up two at least steps at the case lid top, and the corresponding setting of ejector sleeve is with two at least step bottom surfaces of complex thereof, so when the same length of extrusion, the stroke of ejector sleeve is littleer, and when two steps, the stroke is original half, so more convenient to use and installation.

Drawings

Fig. 1 is an exploded schematic view of the optical fiber fixing structure of the present invention;

fig. 2 is a cross-sectional view of the optical fiber fixing structure in an unlocked state;

fig. 3 is a schematic structural view of the box body of the optical fiber fixing structure of the present invention;

fig. 4 is a schematic view of the bottom structure of the case cover of the optical fiber fixing structure of the present invention;

fig. 5 is a schematic top view of the cover of the optical fiber fixing structure of the present invention;

fig. 6 is a cross-sectional view of the optical fiber fixing structure according to the present invention in a locked state.

Detailed Description

The preferred mechanisms and methods of motion realization of the present invention are further described below in conjunction with the figures and the detailed description.

An optical fiber fixing structure, as shown in fig. 1, 2, 3, 4, 5 and 6, comprising:

a case 9 having a front end 2 for disposing the ferrule 1 and a rear end 3 opposite to the front end, the case 9 having an accommodating portion 4, a V-shaped groove being provided at the bottom of the accommodating portion 4; the V-shaped groove is configured to have a bare fiber V-shaped groove 5 near the front end 2 and communicating with the ferrule 1 and a coating V-shaped groove 6 near the rear end 3; the biggest difference between the bare fiber V-shaped groove 5 and the coating layer V-shaped groove 6 is that the V-shaped grooves are different in size, after the outer skin of the optical cable is stripped, a coating layer is further arranged on the optical fiber core wire, and when the optical cable is used, the coating layer is required to be removed from the part which is used for being inserted into the ceramic ferrule 1 or connected with the embedded fiber in the bare fiber V-shaped groove 5, so that the diameter of the optical fiber in the bare fiber V-shaped groove 5 is relatively small, the corresponding optical fiber part with the coating layer is located in the coating layer V-shaped groove 6, the diameter of the optical fiber is relatively large, and when the V-shaped grooves are arranged, the fact that one part of the optical fiber in the bare fiber V-shaped groove. The box body is also provided with a limiting and supporting part 9 and a limiting and supporting part; in this patent, the limit support part is configured such that a clamping groove 7 is provided on the accommodating part 4 near the front end 2, and the limit support blocks 8 are provided on both sides of a position where the bare fiber V-groove 5 and the coating V-groove 6 meet;

a case cover 10, the case body 10 being integrally formed in a strip shape, being provided in the accommodating portion 4 and being separable from the accommodating portion 4, and having a bottom surface facing the V-shaped groove and a top surface opposite to the bottom surface; at least two steps which are sequentially raised are arranged on the top surface at the position corresponding to the V-shaped groove; the cover 10 is disposed on the limit support part, the front and rear positions are defined by the limit support part and resiliently supported by the limit support part, and the bottom surface is ensured to have the capability of moving toward the V-shaped groove, and the external optical fiber can be freely inserted into the V-shaped groove when the cover is in a free state, specifically, in this patent, the cover 10 is provided with an extension arm 12 corresponding to the card slot 7, and is provided with a bare fiber V-shaped groove pressing block 13 and a coating layer V-shaped groove pressing block 14, a connection arm 15 is disposed between the bare fiber V-shaped groove pressing block 13 and the coating layer V-shaped groove pressing block 14, the connection arm 15 is configured to be disposed on the limit support block 8, and when the extension arm 12 is positioned on the card slot 7, the front and rear positions of the bare fiber V-shaped groove pressing block 13 are defined by at least an inner wall of the accommodating part 4 near the front end 2 (an inner wall of a lower portion of the card slot, here, since the bare fiber is the key of the communication connection, the corresponding bare fiber V-groove block 13 must be fixed, and since the integral box cover 10 is long, the middle part is not stable enough if the integral fixation is necessary, and the coating V-groove block 14 may be fixed or not fixed depending on the structural condition and requirements. Meanwhile, the clamping groove 7 is provided with a slope surface which is slightly downward, and the slope surface extends through the slope surface 12 to be bent and deformed. The connection part of the bare fiber V-shaped groove 5 and the coating layer V-shaped groove 6 is provided with a conical guide-assisting groove 21 gradually facing the bare fiber V-shaped groove, in addition, the communication part of the bare fiber V-shaped groove 5 and the ceramic ferrule 1 and the communication part of the coating layer V-shaped groove 6 and the tail part are both provided with similar conical guide-assisting grooves 21, the conical guide-assisting groove 21 is a cone with a half cut away, and the tip of the cone corresponds to the V-shaped groove.

The bottom surface of the coating layer V-shaped groove pressing block 14 is provided with a pressing beam 16 corresponding to the coating layer V-shaped groove 14, the optical cable with the coating layer can be better fixed through the pressing beam, in addition, through the design of the pressing beam 16, the optical fiber can be fixed through the pressing beam 16 extending into the V-shaped groove without exposing the V-shaped groove, and the structure is also suitable for the bare fiber V-shaped groove pressing block 13. At least two steps are arranged on the top surface corresponding to the bare fiber V-shaped groove, in this patent, taking two steps as an example, the two steps are respectively a first step 17 and a second step 18, and the height difference between the two steps is the same, the height difference here mainly refers to the height difference between the first step 17 of the push pipe 11 and the first step 17 of the box cover 10 and the second step 18, or when the push pipe 11 is pushed, the two steps are squeezed, so that the height difference of the parts where the two steps both move downwards is the same. Here, similarly, such a two-step structure is provided at a position corresponding to the bare fiber V-groove 5 in the present patent, but the coating layer V-groove 6 may be provided so that a portion corresponding to the coating layer V-groove 6 in the present patent is similar to the existing design, employing one step. Each step is transited through a slope, and the slope can enable the edge angle parts of the first-stage bottom surface 19 and the second-stage bottom surface 20 of the push pipe 11 to slide more smoothly when contacting with the step.

A push pipe 11 surrounding at least the case 9 and a part of the case cover 10 provided in the case 9; the box cover 11 is provided with at least two step bottom surfaces corresponding to at least two steps, namely a first-stage bottom surface 19 and a second-stage bottom surface 20; the push pipe 11 can be followed box 9 with locate in the box 9 the case lid 10 slides from beginning to end, and can move to at least two the step bottom surface all extrudes at least two stage the step, in order to force the bottom surface to thereby the locking outside optic fibre that inserts in the connector is moved to the V-arrangement groove, and moves to at least one the step bottom surface breaks away from the step so that the case lid kick-backs, thereby freely insert outside optic fibre or to fixing the outside optic fibre unblock in the connector, each be provided with between the step bottom surface and dodge domatic dodging mouth 22 push pipe 11 moves to at least one the step bottom surface breaks away from the step so that when case lid 10 kick-backs, dodge mouth 22 with domatic corresponding. Meanwhile, the arrangement of the avoiding opening 22 enables the first-stage bottom surface 19 and the second-stage bottom surface 20 to be relatively independent, and the mutual influence between the first-stage bottom surface and the second-stage bottom surface is reduced.

In use, the cover 10 is first placed in the receptacle 4 of the housing 9 and then inserted into the push tube 11. The two end points of the push tube 11 moving back and forth correspond to the locking position and the unlocking position. When the optical fiber is unlocked, the step corresponding to the coating layer V-shaped groove 6 on the top surface of the box cover 10 is separated from the corresponding step surface of the push tube 11, the first step 17 opposite to the bare fiber V-shaped groove 5 is contacted with the second bottom surface 20 of the push tube 11, at the moment, pre-compression is carried out, the box cover 10 is limited in the state, the distance between the box cover 10 and the coating layer V-shaped groove 6 and the bare fiber V-shaped groove 5 can ensure that the optical fiber to be inserted is inserted, and meanwhile, the gap between the box cover 10 and the coating layer V-shaped groove 6 cannot be too large, so that the optical fiber is prevented from being separated from the coating layer V-shaped groove 6 from the side part, wherein the optical fiber to be inserted mainly refers to; and after the optical fiber is inserted, push the push tube 11 to the lock position, the step that the top surface of the case lid 10 corresponds to V-groove 6 of the coating layer is combined with the corresponding step surface of the push tube 11 at this moment, and the first step 17 opposite to V-groove 5 of bare fiber contacts with the first bottom surface 19 of the push tube 11, the second step 18 contacts with the second bottom surface 20 of the push tube 11, so, press the whole case lid 10, make the case lid 10 fix the optical fiber on V-groove from above, because of having designed the second step, especially under the condition that the equal length is extruded to the part of the V-groove 5 of bare fiber, the stroke of the push tube 11 is shorter, the utilization rate to the length of the push tube 11 is higher at the same time.

The utility model discloses provide a fiber connector simultaneously, this connector contains above-mentioned fixed knot promptly's connector, here no longer repeatedly.

Finally, it should be noted that: although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that modifications, equivalents, improvements and the like can be made in the technical solutions of the foregoing embodiments or in some technical features of the foregoing embodiments, but all modifications, equivalents, improvements and the like within the spirit and principle of the present invention are intended to be included in the scope of the present invention.

Claims

1. An optical fiber fixing structure characterized in that:

the method comprises the following steps:

the box body is provided with a front end used for configuring the ceramic ferrule and a tail end opposite to the front end, the box body is provided with an accommodating part, and a V-shaped groove is formed in the bottom of the accommodating part; the box body is also provided with a limiting supporting part;

2. The optical fiber fixing structure according to claim 1, wherein:

the V-groove is configured to have a bare fiber V-groove proximate the leading end and in communication with the ferrule and a coated layer V-groove proximate the trailing end.

3. The optical fiber fixing structure according to claim 2, wherein:

at least two steps are arranged on the top surface corresponding to the bare fiber V-shaped groove.

4. The optical fiber fixing structure according to claim 2, wherein:

the limiting support part is configured in such a way that a clamping groove is arranged at the position, close to the front end, of the accommodating part, and limiting support blocks are arranged on two sides of the position, connected with the bare fiber V-shaped groove and the coating layer V-shaped groove, of the accommodating part;

5. The optical fiber fixing structure according to claim 4, wherein:

and the bottom surface of the coating layer V-shaped groove pressing block is provided with an extrusion beam corresponding to the coating layer V-shaped groove.

6. The optical fiber fixing structure according to any one of claims 2 to 5, wherein:

and a tapered guide assisting groove gradually facing the bare fiber V-shaped groove is arranged at the joint of the bare fiber V-shaped groove and the coating layer V-shaped groove.

7. The optical fiber fixing structure according to any one of claims 1 to 5, wherein:

the height difference between at least two steps is the same.

8. The optical fiber fixing structure according to any one of claims 1 to 5, wherein:

and the steps are transited through a slope.

9. The optical fiber fixing structure according to claim 8, wherein:

each step bottom surface is provided with an avoidance opening for avoiding the slope, the push pipe moves to at least one step bottom surface to be separated from the step so that the box cover rebounds, and the avoidance opening corresponds to the slope.

10. An optical fiber connector, characterized by:

an optical fiber connector having the optical fiber fixing structure of any one of claims 1 to 9.