CN214750942U - Optical fiber ferrule and optical fiber connector - Google Patents

Abstract

The application relates to the field of optical fiber communication, and provides an optical fiber ferrule and an optical fiber connector, which comprise a cylindrical body and a shell, wherein at least three optical fiber holes are formed in one end of the body; the shell is used for fixing the body, and one end of the body, which is provided with the optical fiber hole, protrudes out of the shell. The application provides an optic fibre lock pin forms the multicore lock pin through seting up at least three optical fiber hole on the body, improves the density of fiber connection, increases the quantity in optical fiber hole moreover, is favorable to carrying out the extension of optic fibre core number on the basis of current optic fibre lock pin, realizes the upgrading demand of optic fibre lock pin, provides the connection density of higher optic fibre under same fiber connector interface size condition.

Description

Optical fiber ferrule and optical fiber connector

Technical Field

The utility model relates to the field of communication technology, especially, relate to an optic fibre lock pin and fiber connector.

Background

The optical fiber connector is a detachable device for connecting optical fibers, and the two end faces of two optical fibers to be connected are butted together, so that the light energy output by a transmitting optical fiber can be coupled into a receiving optical fiber to the utmost extent, and the influence of the light energy on a system in the transmission process is minimized as much as possible.

The component of the optical fiber connector for realizing the optical fiber communication is called an optical fiber ferrule, and the optical fiber ferrule is used for inserting the optical fiber. At present, a single-core optical fiber ferrule is used mostly, namely, the single-core optical fiber ferrule can be used for inserting one optical fiber and connecting one optical fiber, so that the transmission data is small, and the increasing requirements of the society on the data transmission quantity can not be met.

SUMMERY OF THE UTILITY MODEL

In view of this, the present disclosure provides an optical fiber ferrule and an optical fiber connector to solve the problem of core number expansion of a single core ferrule.

The optical fiber ferrule provided by the embodiment of the application comprises a cylindrical body, wherein at least three optical fiber holes are formed in the end face of one end of the cylindrical body; the casing, the casing is used for fixing the body, the body is equipped with the one end of optic fibre hole is outstanding in the outside of casing.

Further, the distance between two adjacent optical fiber holes is the same.

Furthermore, the optical fiber holes are arranged in an array of m rows and n columns, wherein m and n are positive integers, and m × n is more than or equal to 3.

Furthermore, the end face of the body, provided with the optical fiber hole, is also provided with a guide piece, and the guide piece is used for being connected with the guide piece arranged on the body of the other corresponding optical fiber insertion core.

Further, the guide piece is a guide hole formed on the end face or a guide needle protruding outwards from the end face.

Furthermore, one end of the guide needle, which is far away from the end face of the body, is provided with a chamfer.

Furthermore, the optical fiber ferrule further comprises a guide needle, the guide needle is used for connecting the two butted bodies, and a guide hole for inserting the guide needle is formed in the end face of each body.

Furthermore, chamfers are arranged at two ends of the guide needle.

Furthermore, the optical fiber holes are symmetrically arranged along the connecting line of the guide needle; or the optical fiber holes are symmetrically arranged along the central connecting line of the guide holes.

On the other hand, the embodiment of the application further provides an optical fiber connector, which comprises a male plug core and a female plug core correspondingly connected with the male plug core, wherein the male plug core and the female plug core respectively comprise the optical fiber plug core in any one of the above implementation modes.

The embodiment of the application provides an optic fibre lock pin, including body and casing, the body is cylindrically, and is equipped with at least three optic fibre hole on the terminal surface of the one end of body. Through setting up the fiber hole for at least being three, form the multicore lock pin to many optic fibres can be connected simultaneously, the density of fiber connection has been improved, is of value to and forms the optical fiber communication of higher speed. And the number of the optical fiber holes is increased, so that the number of the optical fiber cores of the insertion core for connecting single optical fiber can be conveniently expanded, the number of the optical fiber connections is increased, the upgrading requirement of the existing optical fiber insertion core is facilitated, and higher optical fiber connection density is provided under the condition of the same optical fiber connector interface size.

Drawings

Fig. 1 is a schematic structural diagram of an optical fiber ferrule provided in an embodiment of the present application;

fig. 2 is a schematic structural diagram of the male ferrule and the female ferrule in cooperation according to the embodiment of the present application;

FIG. 3 is a front view of a body provided by an embodiment of the present application;

FIG. 4 is a side view of a body provided by an embodiment of the present application;

fig. 5 is a schematic structural diagram of a housing provided in an embodiment of the present application;

FIG. 6 is a schematic diagram of an arrangement of optical fiber holes according to an embodiment of the present disclosure;

FIG. 7 is a schematic view of another arrangement of fiber holes provided in embodiments of the present application;

FIG. 8 is a schematic view of another arrangement of fiber holes provided in embodiments of the present application;

fig. 9 is a schematic structural diagram of a guide according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural view of another guide provided in the embodiments of the present application;

FIG. 11 is a schematic structural view of another guide provided in the embodiments of the present application;

FIG. 12 is a schematic structural view of another guide provided in the embodiments of the present application;

FIG. 13 is a side view of another body provided in accordance with an embodiment of the present application;

fig. 14 is a schematic structural diagram of an optical fiber connector according to an embodiment of the present application.

Description of reference numerals:

1-an optical fiber connector; 1 a-male ferrule; 1 b-a female ferrule; 10-a body; 11-a fiber channel; 12-a fiber hole; 13-a guide; 131-a guide hole; 132-an introducer needle; 1321-chamfering; 20-a housing; 21-containing chamber.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

Various combinations of the specific features in the embodiments described in the detailed description may be made without contradiction, for example, different embodiments may be formed by different combinations of the specific features, and in order to avoid unnecessary repetition, various possible combinations of the specific features in the present application will not be described separately.

In the following description, reference is made to the term "comprising" or any other variation thereof, which is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element. The term "coupled", where not otherwise specified, includes both direct and indirect connections.

In the embodiments of the present application, the description of the positional relationship such as "inside" and "outside" is referred to, and the external environment of the product or the component to be described is referred to as "outside" and the other positions corresponding to the external environment are referred to as "inside" with reference to the normal operating state.

The optical fiber ferrule provided by the present application, as shown in fig. 1, includes a body 10 and a housing 20, wherein the body 10 is located inside the housing 20, and a portion of the body 10 protrudes outside the housing 20, and a portion of the body 10 protruding outside the housing 20 is used for connecting an optical fiber. Specifically, the housing 20 is a hollow structure, and a containing cavity communicated with the external environment is formed inside the housing, and the body 10 is partially located in the containing cavity and the other part is located in the external environment. The body 10 is a hollow structure, and the optical fiber is arranged in the hollow structure, namely the body 10 wraps the optical fiber, so that the optical fiber is convenient to connect and protected from being collided.

As shown in fig. 2, the optical fiber ferrule 1 is generally divided into a male ferrule 1a and a female ferrule 1b, and both the male ferrule 1a and the female ferrule 1b include a body 10 and a housing 20. When optical fiber communication is carried out, the male plug core 1a is butted with the body 10 of the female plug core 1b, so that optical fibers in the body 10 are butted and communicated, and the connection communication of the optical fibers is realized.

In the embodiment of the present application, as shown in fig. 3, the body 10 is cylindrical, and the optical fiber channel 11 is formed inside the body 10, and the optical fiber channel 11 may be a cylindrical cavity for placing an optical fiber. The optical fiber passage 11 extends in the length direction of the body 10 (the left-right direction as viewed in fig. 3). The number of the optical fiber channels 11 may be one or more, for example, the number of the optical fiber channels 11 is three, and the optical fibers are disposed in all of the three optical fiber channels 11. As shown in fig. 4, at least three optical fiber holes 12 are formed in an end surface of one end of the body 10. Specifically, the end face refers to a plane of one end of the cylindrical workpiece, i.e., a plane of the end of the body 10. The plane is provided with an optical fiber hole 12, the optical fiber channel 11 is communicated with the optical fiber hole 12, the optical fiber in the optical fiber channel 11 is fixed with the optical fiber hole 12, the fixing mode can be glue fixing, and can also be fixing through other fixing pieces, and further limitation is not needed here. For example, glue is applied to the walls of the fiber holes 12, and when the optical fiber passes through the fiber holes 12, the optical fiber is fixed to the fiber holes 12 by the glue on the walls. The optical fiber holes 12 are arranged in a plurality of, three or more than three, the arrangement of the optical fiber holes 12 is beneficial to improving the optical fiber density, and the requirement of high-density optical fiber connection can be met. The number of the optical fiber passages 11 and the number of the optical fiber holes 12 may be the same or different. For example, the number of the optical fiber channels is 1, the number of the optical fiber holes 12 is plural, the optical fibers are in a state where a plurality of optical fibers are combined in the optical fiber channel 11, the plurality of optical fibers are dispersed when approaching the optical fiber holes 12, each optical fiber corresponds to one optical fiber hole 12, and the optical fibers are fixed in the corresponding optical fiber hole 12. Alternatively, the shape of the fiber hole 12 may be circular, elliptical, or square. For example, the fiber holes 12 may be provided as circular holes, the diameter of which may be 0.1mm, 0.2mm, 0.12mm, or the like.

Optionally, the material of the body 10 is various, and is not further limited herein, for example, the body 10 may be made of ceramic, glass, plastic, or the like.

It should be noted that, the end face of the body 10 of the male ferrule 1a is butted with the end face of the body 10 of the female ferrule 1b, the precision requirement for butting the end faces of the two bodies 10 is high, and the end faces of the bodies 10 need to be ground and polished, so that the two bodies 10 can form a substantially seamless connection. By substantially seamless, it is meant that absolute seamless is not required in view of the tooling assembly process.

As shown in fig. 5, the housing 20 of the fiber stub 1 is configured to be disposed around the fixing body 10. Specifically, the housing 20 forms an accommodating chamber 21 therein, and the body 10 is inserted into the accommodating chamber 21 and fixed. Alternatively, the housing 20 may be made of plastic or metal. The shell 20 is wrapped on the outer side of the body 10, so that the body 10 is fixed to avoid shaking, and meanwhile, the body 10 is protected from being collided. Optionally, the shape of the housing 20 may be a cylindrical structure surrounding the body 10, or may be a rectangular structure, and the specific structure may be adjusted and set according to an actual operation scene or an appearance aesthetic feeling, which is not limited herein. As shown in fig. 3 and 4, the end of the body 10 provided with the fiber hole 12 protrudes outside the housing 20. Specifically, one end of the body 10 is inserted into the accommodating cavity 21, and the other end protrudes out of the outer side of the casing 20, that is, the casing 20 wraps most of the body 10, and the end of the body 10 with the optical fiber hole 12 is exposed to the outside, which is beneficial to the connection of the optical fibers in the optical fiber hole 12. Alternatively, the end face of the end of the body 10 with the fiber hole 12 may be protruded from the plane of the housing 20, or may be flush with the plane of the housing 20, as long as the end face with the fiber hole 12 is exposed.

Optionally, a fixing structure is further disposed on the housing 20, and the fixing structure may be a thread or a snap. For example, when the optical fiber ferrule 1 performs optical fiber connection, the housing 20 of the male ferrule 1a and the housing of the female ferrule 1b are fixed by a snap structure, so that the body 10 of the male ferrule 1a and the body 10 of the female ferrule 1b can be stably butted, thereby ensuring the stability of optical fiber connection.

The utility model provides an optic fibre lock pin, including body and casing, the body is cylindrically, and is equipped with at least three optical fiber hole on the terminal surface of the one end of body, and the body is fixed with the casing, and the one end that the body has the optical fiber hole is outstanding in the outside of casing. The optical fiber inserting core provided by the embodiment of the application is at least three through setting the optical fiber holes, so that the multi-core inserting core is formed, the density of optical fiber connection is improved, and the optical fiber communication with higher speed is formed beneficially. And the number of the optical fiber holes is increased, so that the number of the optical fiber cores of the insertion core for connecting single optical fiber can be conveniently expanded, the number of the optical fiber connections is increased, the upgrading requirement of the existing optical fiber insertion core is facilitated, and higher optical fiber connection density is provided under the condition of the same optical fiber connector interface size.

In some embodiments, the distance between two adjacent fiber holes 12 is the same. Specifically, adjacent means that two members are in contact with each other or that no other member is provided between the two members. The optical fiber holes 12 are uniformly arranged, so that the distance between two adjacent optical fiber holes 12 is the same, and the processing of the optical fiber holes 12 and the replacement of the body 10 are facilitated. The arrangement of the optical fiber holes 12 may be scattered, as shown in fig. 6, the optical fiber holes 12 are scattered around a center point of the end face of the body 10. The optical fiber holes 12 may also be arranged in a surrounding manner, as shown in fig. 7, the optical fiber holes 12 are disposed on a circular arc line formed by radii of different lengths with a center of a circle of the end surface of the body 10 as a center. The optical fiber holes 12 may also be arranged in an array, as shown in fig. 8, the optical fiber holes 12 are arranged in a matrix form. The array arrangement refers to an array form, for example, the optical fiber holes 12 are arranged in a straight line to form a single-row array, and the distance between every two adjacent optical fiber holes 12 is the same; or the optical fiber holes 12 are arranged in a plurality of straight lines to form a plurality of rows of arrays, each row of optical fiber holes 12 forms a single row of arrays, and the distance between the single rows of arrays is the same.

In some embodiments, as shown in FIG. 8, the fiber holes 12 are arranged in an array of m rows and n columns, where m and n are positive integers and mxn ≧ 3. Specifically, the optical fiber holes 12 are arranged in an orderly matrix, and are composed of a certain number (m) of rows and a certain number (n) of columns, for example, the number m of rows is 1, the number n of columns is 3, so as to form an optical fiber hole array with 3 optical fiber holes 12, or the number n of rows is 2, and the number of columns is 3, so as to form an optical fiber hole array with 6 optical fiber holes 12. It should be noted that the distance between adjacent fiber holes 12 in each row and each column is the same.

In some embodiments, as shown in fig. 9, a guide 13 is further disposed on the end surface of the body 10 provided with the fiber hole 12, and the guide 13 is used for connecting with a guide 13 disposed on the body 10 of another corresponding fiber stub. Specifically, the guide piece 13 sets up on the terminal surface at optic fibre hole 12 place, and when the body 10 of optic fibre lock pin carried out optical fiber connection, need the accurate butt joint of optic fibre hole 12 that will correspond to guarantee that each optic fibre hole 12 can both communicate, carry out the optical fiber communication, and the guide piece 13 on 1 and another optic fibre lock pin that corresponds of optic fibre lock pin 1 is connected, can let the butt joint that the optic fibre hole 12 of two optic fibre lock pins 1 can be accurate. The guide 13 may be a clamping structure, for example, if a protrusion is disposed on the end surface of the male ferrule 1a, a groove is disposed on the end surface of the female ferrule 1b, when the male ferrule 1a is butted with the female ferrule 1b, the protrusion on the male ferrule 1a aligns with the groove on the female ferrule 1b to be inserted, so as to define a position relationship between the body 10 of the male ferrule 1a and the body 10 of the female ferrule 1b, thereby enabling the male ferrule 1a and the female ferrule 1 to be connected only along one direction, and avoiding the relative rotation between the male ferrule 1a and the female ferrule 1 b. The male plug core 1a and the female plug core 1b can not rotate relatively, so that the optical fiber hole 12 on the female plug core 1b correspondingly connected with the optical fiber hole 12 on the male plug core 1a is fixed, and the accuracy of optical fiber connection is further ensured.

Alternatively, as shown in fig. 10, the guide 13 is a guide hole 131 formed on the end surface or a guide needle 132 protruding outward from the end surface. Specifically, the guiding needle 132 is a needle shape fixed on the end face of the body 10 and extending away from the end face, for example, the cross section of the guiding needle 132 may be circular or square, and the cross section of the corresponding guiding hole 131 may be circular or square. The cross-sectional area of the guide hole 131 is slightly larger than the cross-sectional area of the guide needle 132, for example, if the cross-sectional area of the guide needle 132 is a circle of 0.1mm directly, then the cross-sectional area of the guide hole may be a circle of 0.12mm in diameter. The guiding hole 131 is matched with the guiding needle 132, and when the body 10 with the guiding needle 132 is connected with the body 10 with the guiding hole 131, the guiding needle 132 is inserted into the corresponding guiding hole 131 of the body 10 to define the butt joint direction of the body 10, and therefore the butt joint direction of the optical fiber holes 12 on the body 10.

As shown in fig. 10, the end of introducer needle 132 distal from the end face of body 10 is provided with a chamfer 1321. The chamfering is a process of cutting the edge of the workpiece to a predetermined slope. The guiding needle 132 is inserted into the corresponding guiding hole 131 to define the connecting direction of the body 10, and in order to facilitate the guiding needle 132 to smoothly fit into the guiding hole 131, a chamfer 1321 is provided on the end surface of the guiding needle 132 away from the body 10. The chamfer 1321 is a slope inclined toward the center line of the guide needle 132, and the presence of the chamfer 1321 makes the cross-sectional area of the end surface of the guide needle 132 smaller than the cross-sectional area of the portion of the guide needle 132 where the chamfer 1321 is not present, thereby facilitating the fitting of the guide needle 132 with the guide hole 131. Alternatively, the angle of inclination of the chamfer 1321 may be 30 °, 45 ° or 60 °, and the angle thereof may be adjusted according to the actual working condition.

Optionally, the inclined surface of the chamfer 1321 may be arc-shaped, and the center of the arc is away from the guidance needle 132 to form an arc-shaped transition region, so that the guidance needle 132 passes through the arc-shaped transition region when being matched with the guidance hole 132, thereby achieving smooth transition.

In some embodiments, as shown in fig. 11, the fiber stub 1 further includes a guide pin 132. In particular, the introducer needle 132 is a separate component from the body 10, i.e., is not fixedly disposed on the body 10. The guide needle 132 is elongated and may be cylindrical or rectangular. The guide needle 132 is used to connect two butted bodies 10, and a guide hole 131 for inserting the guide needle 132 is opened on an end surface of each body 10. Specifically, the body 10 is provided with a guiding hole 132, and the cross section of the guiding hole 132 may be circular, square or other shapes. When the optical fiber ferrules are connected, the guide holes 131 of the male ferrule 1a and the guide holes 131 of the female ferrule 1b need to be butted, and one end of the guide pin 132 is inserted into the male ferrule 1a and the other end is inserted into the female ferrule 1 b. The overall length of the guide pin 132 is the depth of the guide hole 131 of the male ferrule 1a plus the depth of the guide hole 131 of the female ferrule 1b, and the guide holes 131 of the male ferrule 1a and the guide holes 132 of the female ferrule 1b can be set to be the same, so that the length of the guide pin 132 can be twice as long as the length of the guide hole 131 in order to facilitate the fit between the male ferrule 1a and the female ferrule 1b without gaps. Chamfers 1321 are provided at both ends of the introducer needle 132. Both ends of the guide needle 132 are inserted into the body 10, and chamfers 1321 are provided at both ends to facilitate the insertion of the guide needle 131 into the guide hole 132.

Alternatively, as shown in fig. 12, the cross section of the guide hole 131 in the male ferrule 1a or the female ferrule 1b may be formed in an elongated shape, both ends of the elongated shape are formed in a circular arc shape, and the guide pin 132 may slide in the elongated guide hole 131. The abutting or undocking of the body 10 can be quickly adjusted by sliding the guide needle 132 between the elongated guide needles 132.

In some embodiments, as shown in FIG. 13, the fiber holes 12 are symmetrically disposed along a line connecting the guide pins 132, or the fiber holes 12 are symmetrically disposed along a line connecting centers of the guide holes 131. Specifically, the center region of the end face of the body 10 is provided with the optical fiber hole 12, and the center region is a region close to the center line of the body 10. In order to leave a sufficient central area, the guide needles 132 or the guide holes 131 are disposed away from the center line of the body 10, and the guide needles 132 or the guide holes 131 may be disposed in pairs, for example, two guide needles 131 are disposed, two guide holes 131 are disposed, and when the fiber holes 12 are disposed symmetrically along the connecting line of the guide holes 131 or the guide needles 132, the two guide needles 132 may be randomly inserted into the two guide holes 132 without defining each guide needle 132 as a guide hole 132 determined by the insertion displacement, thereby facilitating the docking of the body 10.

The embodiment of the present application further provides an optical fiber connector, as shown in fig. 14, including a male plug core 1a and a female plug core 1b correspondingly connected to the male plug core 1a, where the male plug core 1a and the female plug core 1b both include the optical fiber plug core mentioned in the above embodiments of the present application, and are used for butt-jointing a plurality of optical fiber holes to realize high-density optical signal transmission.

The above description is only a preferred embodiment of the present application, and is not intended to limit the scope of the present application.

Claims (10)

1. A fiber optic ferrule, comprising:

the optical fiber connector comprises a body, wherein the body is cylindrical, and at least three optical fiber holes are formed in the end face of one end of the body;

the casing, the casing is used for fixing the body, the body is equipped with the one end of optic fibre hole is outstanding in the outside of casing.

2. The fiber optic ferrule of claim 1, wherein the distance between adjacent two of the fiber holes is the same.

3. The fiber optic ferrule of claim 2 wherein the fiber holes are arranged in an array of m rows and n columns, wherein m and n are positive integers, and mxn is greater than or equal to 3.

4. The fiber optic ferrule of claim 1, wherein the end face of the body having the fiber bore is further provided with a guide for connecting with a guide provided on the body of a corresponding other of the fiber optic ferrules.

5. The fiber optic ferrule of claim 4, wherein the guide is a guide hole opened on the end face or a guide pin protruding outward from the end face.

6. The fiber optic ferrule of claim 5, wherein an end of the guide pin distal from the end face of the body is chamfered.

7. The optical fiber ferrule of claim 1, further comprising a guide pin for connecting two abutting bodies, wherein a guide hole for inserting the guide pin is opened on an end surface of each body.

8. The fiber optic ferrule of claim 7, wherein both ends of the guide pin are chamfered.

9. The fiber optic ferrule of any of claims 5-8, wherein the fiber holes are symmetrically disposed along a line connecting the guide pins;

or the optical fiber holes are symmetrically arranged along the central connecting line of the guide holes.

10. An optical fiber connector, comprising a male plug core and a female plug core correspondingly connected with the male plug core, wherein the male plug core and the female plug core both comprise the optical fiber plug core according to any one of claims 1 to 9.

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