CN216870868U

CN216870868U - Optical fiber core inserting fixing structure and optical fiber connector

Info

Publication number: CN216870868U
Application number: CN202220545534.2U
Authority: CN
Inventors: 不公告发明人
Original assignee: Rosenberger Technologies Co Ltd
Current assignee: Prologis Communication Technology Suzhou Co Ltd
Priority date: 2022-03-14
Filing date: 2022-03-14
Publication date: 2022-07-01
Anticipated expiration: 2032-03-14

Abstract

The utility model discloses an optical fiber ferrule fixing structure and an optical fiber connector, wherein the optical fiber ferrule fixing structure comprises: each ferrule assembly is provided with an elastic piece; the first shell is internally provided with a first limiting piece; the second shell is detachably connected with the first shell, at least one second accommodating cavity for accommodating the other end of the ferrule assembly is arranged in the second shell, and a second limiting piece is arranged at one end, away from the first shell, of the second accommodating cavity; the ferrule assembly is matched with the first limiting piece, and the elastic piece is matched with the second limiting piece so as to install the ferrule assembly in the first shell and the second shell. According to the utility model, the standard ferrule assembly is fixed, so that the standard ferrule assembly can be conveniently installed in the connector shell, and the optical fiber connector has the same excellent performance as a standard LC connector.

Description

Optical fiber core inserting fixing structure and optical fiber connector

Technical Field

The utility model relates to the technical field of communication, in particular to an optical fiber ferrule fixing structure and an optical fiber connector.

Background

The optical fiber connector is a device for detachably connecting optical fibers, in some application scenes, particularly under the condition of small-size space, because a socket of a product is of a non-standard structure, a connector shell matched with the product is also of the non-standard structure, if a non-standard ferrule assembly is arranged in the connector shell, the cost of the connector is extremely high, and the quality cannot be guaranteed; when the standard ferrule assembly is used for installation, the installation space is small, and the standard ferrule assembly is not matched with the non-standard connector shell, so that the installation is very inconvenient.

Therefore, there is a need for a fiber ferrule fixing structure that can facilitate the installation of a standard ferrule assembly in a connector housing by fixing the standard ferrule assembly.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide an optical fiber ferrule fixing structure and an optical fiber connector, which can facilitate installation of a standard ferrule assembly in a connector housing by fixing the standard ferrule assembly, and which can provide the same excellent performance as a standard LC connector.

In order to achieve the above object, the present invention provides an optical fiber ferrule fixing structure, including:

each ferrule assembly is provided with an elastic piece;

the optical fiber connector comprises a first shell, at least one first accommodating cavity and a second accommodating cavity, wherein the first accommodating cavity is used for accommodating one end of the ferrule assembly, and a first limiting piece used for limiting the ferrule assembly is arranged in the first accommodating cavity;

the second shell is detachably connected with the first shell, at least one second accommodating cavity for accommodating the other end of the ferrule assembly is arranged in the second shell, and a second limiting piece for limiting the elastic piece is arranged at one end, away from the first shell, of the second accommodating cavity;

the ferrule assembly is matched with the first limiting piece, and the elastic piece is matched with the second limiting piece so as to install the ferrule assembly in the first shell and the second shell.

In some embodiments, the ferrule assembly comprises a ferrule, a ferrule holder and a ferrule guide tube which are connected end to end in sequence, the elastic member is sleeved on the ferrule guide tube, and the inner diameter of the elastic member is smaller than the outer diameter of the ferrule holder;

the first limiting part limits the plug core seat, the plug core seat is matched with the first limiting part, and the elastic part is matched with the plug core seat and the second limiting part so as to install the plug core assembly in the first shell and the second shell.

In some embodiments, the first limiting member limits the radial direction of the plug seat, and the second limiting member limits the axial direction of the elastic member;

the second shell is provided with a notch extending along the axis direction of the second shell, the second accommodating cavity is communicated with the outside through the notch, and the width of the notch is larger than the outer diameter of the insertion core guide pipe and smaller than the outer diameter of the elastic piece.

In some embodiments, two ferrule assemblies are provided, two first accommodating cavities are provided in the first housing, the two first accommodating cavities are arranged at intervals along the same axial direction, two second accommodating cavities are provided in the second housing, the two second accommodating cavities are arranged at intervals along the same axial direction, two notches are provided in the second housing, the two notches are respectively located on two opposite sides of the second housing, and the notches are used for installing the corresponding ferrule guide tubes and the corresponding elastic members;

or, the ferrule assembly is provided with at least three ferrules, at least three first accommodating cavities are arranged in the first shell, the at least three first accommodating cavities are arranged at intervals along the same axial direction, at least three second accommodating cavities are arranged in the second shell, the at least three second accommodating cavities are arranged at intervals along the same axial direction, at least three notches are arranged on the second shell, each notch is respectively positioned on the same side of the second shell, and the notches are used for installing corresponding ferrule guide tubes and corresponding elastic pieces;

or, the lock pin subassembly is provided with at least three, the inside of first casing is provided with at least three the first chamber that holds, at least three the first chamber that holds sets up along the circumferencial direction interval, the inside of second casing is provided with at least three the second holds the chamber, at least three the second holds the chamber and sets up along the circumferencial direction interval, be provided with at least three on the second casing the notch, at least three the notch respectively in the circumferencial direction interval of second casing sets up, the notch is used for the installation corresponding lock pin guiding tube with the elastic component.

In some embodiments, the ferrule is a cylindrical structure, the center of the cylinder of the ferrule is provided with a micropore for fixing an optical fiber, and the outer diameter of the ferrule seat is larger than the outer diameters of the ferrule and the ferrule guide tube;

the section of a radial line at any position of the ferrule holder is polygonal, and one end of the ferrule holder close to the ferrule is provided with a conical transition section;

the inner wall of the first accommodating cavity is of a polygonal structure matched with the outer wall of the ferrule holder, and the polygonal structure forms the first limiting piece;

when the first shell and the second shell are connected in an adaptive mode, the insertion core extends out of the first accommodating cavity and extends for a preset length in the direction far away from the second shell, and the first limiting part is connected with the insertion core base in an adaptive mode in a clamped mode.

In some embodiments, the ferrule guide tube is of a cylindrical structure, the second accommodating cavity is of a cylindrical structure, and a boss extending towards the second accommodating cavity is arranged at one end of the second housing away from the first housing, and forms the second limiting member;

when the first shell is connected with the second shell in an adaptive mode, the ferrule and the ferrule holder are arranged in the first accommodating cavity, the ferrule guide tube and part of the structure, close to one end of the ferrule holder, of the elastic piece are arranged in the first accommodating cavity, the ferrule guide tube and part of the structure, far away from one end of the ferrule holder, of the elastic piece are arranged in the second accommodating cavity, one end of the elastic piece is abutted to the ferrule holder, the other end of the elastic piece is abutted to the boss, and the ferrule guide tube extends out of the second accommodating cavity and extends to the direction far away from the first shell by a preset length.

In some embodiments, a first connecting piece is arranged on the first housing, a second connecting piece is arranged on the second housing, and the first connecting piece is connected with the second connecting piece in a matching manner, so that the first housing is detachably connected with the second housing.

In some embodiments, the first connector comprises at least one catch, the at least one catch being disposed on an outer wall of the first housing;

the second connecting piece include at least one with the elasticity trip of buckle adaptation, at least one the elasticity trip set up in on the outer wall of second casing, every the elasticity trip with correspond buckle adaptation is connected, makes first casing with the second casing can be dismantled and be connected.

In some embodiments, the first connector further includes a guide slot, and the first connector includes one of the fasteners, and the guide slot and the fastener are respectively disposed on two opposite sides of the first housing;

the second connecting piece also comprises a guide strip, one elastic clamping hook is arranged, and the guide strip and the elastic clamping hook are respectively arranged on two opposite sides of the second shell;

the guide strip is inserted into the guide groove in an adaptive manner, and the elastic clamping hook is clamped with the buckle in an adaptive manner, so that the first shell and the second shell are detachably connected;

the second casing inserts the in-process of first casing, the buckle forces the inside gradual shrink back of elasticity trip with buckle adaptation joint, the unblock in-process, force earlier the inside gradual shrink back of elasticity trip with the buckle breaks away from the joint, will again the second casing is to keeping away from first casing direction pulling.

In some embodiments, the first housing is a cylindrical structure, two sides of the circumference of the first housing are provided with guide surfaces, and the guide groove and the buckle are respectively arranged on the guide surfaces on the corresponding sides;

the second shell is of a cylindrical structure, guide blocks extending towards the first shell are arranged on two sides of the circumference of the second shell, the guide strips and the elastic clamping hooks are respectively arranged on the guide blocks on the corresponding sides and extend for a preset length towards the direction close to the first shell, the guide strips are inserted into the guide grooves in an adaptive mode, and when the elastic clamping hooks are connected with the clamping hooks in an adaptive mode, the guide blocks on two sides are respectively attached to the guide surfaces on the corresponding sides;

one end, far away from the first casing, of the second casing is further provided with at least one reinforcing rib, and the reinforcing ribs are arranged between the two adjacent inserting core guide pipes.

In some embodiments, further comprising:

the positioning body is arranged at one end, far away from the second shell, of the first shell and extends in the axis direction of the first shell for a preset length, and the positioning body is used for limiting with the connector shell.

According to another aspect of the present invention, the present invention further provides an optical fiber connector including the ferrule assembly fixing structure described in any one of the above, further including: and the ferrule assembly fixing structure is mounted inside the connector shell in an adaptive manner.

Compared with the prior art, the optical fiber core inserting fixing structure and the optical fiber connector provided by the utility model have the following beneficial effects:

1. according to the optical fiber ferrule fixing structure, the ferrule assembly and the elastic piece are fixed through the first shell and the second shell, so that the ferrule assembly can be conveniently installed, and meanwhile, a standard ferrule assembly can be used for the non-standard optical fiber connector through the first shell and the second shell, so that the optical fiber connector has the same excellent performance as a standard connector;

2. the optical fiber inserting core fixing structure provided by the utility model realizes that the standard LC part is used for the non-standard optical fiber connector under the condition of small-size space, so that the size of the optical fiber connector is as small as possible, the optical fiber connector is ensured to have the same excellent performance as the standard LC connector, the single-mode insertion loss is optimized to 0.2dB from 1.5dB of the original non-standard part, the cost is reduced, the quality and the reliability of the part are improved, and meanwhile, the production and the assembly are convenient.

Drawings

The above features, technical features, advantages and modes of realisation of the present invention will be further described in the following detailed description of preferred embodiments thereof, which is to be read in connection with the accompanying drawings.

FIG. 1 is a schematic structural view of a fiber stub securing structure according to a preferred embodiment of the present invention;

FIG. 2 is a schematic structural view of another perspective of the fiber stub fixing structure according to the preferred embodiment of the present invention;

FIG. 3 is an exploded view of a preferred embodiment fiber stub mounting structure of the present invention;

fig. 4 is a sectional view of a fiber stub fixing structure according to a preferred embodiment of the present invention;

FIG. 5 is a schematic structural view of a first housing of the preferred embodiment of the present invention;

FIG. 6 is a schematic structural view of a second housing of the preferred embodiment of the present invention;

fig. 7 is a schematic structural view of a ferrule assembly and an elastic member according to a preferred embodiment of the present invention.

The reference numbers illustrate:

the optical fiber connector comprises a first shell 1, a first limiting part 11, a buckle 12, a guide surface 13, a second shell 2, a second limiting part 21, an elastic clamping hook 22, a guide block 23, a notch 24, a reinforcing rib 25, a guide strip 26, a ferrule assembly 3, a ferrule 31, a micropore 311, a ferrule seat 32, a ferrule guide tube 33, a transition section 34, an elastic part 4 and a positioning body 5.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the utility model, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

For the sake of simplicity, only the parts related to the present invention are schematically shown in the drawings, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".

It should be further understood that the term "and/or" as used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

In this context, it is to be understood that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In addition, in the description of the present application, the terms "first", "second", and the like are used only for distinguishing the description, and are not intended to indicate or imply relative importance.

In one embodiment, referring to fig. 1 to 4 of the specification, the present invention provides an optical fiber ferrule fixing structure, including: a first housing 1, a second housing 2, and at least one ferrule assembly 3. Every ferrule assembly 3 is last all to be equipped with elastic component 4, and the inside of first casing 1 is provided with at least one and is used for holding the first chamber that holds of ferrule assembly 3 one end, and the first intracavity that holds is provided with and is used for carrying on spacing first locating part 11 to ferrule assembly 3. The second housing 2 is detachably connected with the first housing 1, at least one second accommodating cavity for accommodating the other end of the ferrule assembly 3 is arranged in the second housing 2, and a second limiting part 21 for limiting the elastic part 4 is arranged at one end, far away from the first housing 1, of the second accommodating cavity. The ferrule assembly 3 is engaged with the first limiting member 11, and the elastic member 4 is engaged with the second limiting member 21 to install the ferrule assembly 3 in the first housing 1 and the second housing 2. The plug core assembly 3 and the elastic piece 4 are fixed through the first shell 1 and the second shell 2, the installation of the plug core assembly 3 can be facilitated, and meanwhile, the standard plug core assembly 3 can be used for the non-standard optical fiber connector through the first shell 1 and the second shell 2, so that the optical fiber connector has the same excellent performance as a standard connector.

In one embodiment, the ferrule assembly 3 includes a ferrule 31, a ferrule holder 32 and a ferrule guide tube 33 connected end to end in sequence, the elastic member 4 is sleeved on the ferrule guide tube 33, and the inner diameter of the elastic member 4 is smaller than the outer diameter of the ferrule holder 32. The first limiting member 11 limits the ferrule holder 32, the ferrule holder 32 is matched with the first limiting member 11, and the elastic member 4 is matched with the ferrule holder 32 and the second limiting member 21 to install the ferrule assembly 3 in the first housing 1 and the second housing 2.

In one embodiment, referring to the accompanying drawings 1 to 4 and 7, the ferrule assembly 3 includes a ferrule 31, a ferrule holder 32 and a ferrule guide tube 33 fixedly connected end to end in sequence. The ferrule 31 is a cylindrical structure, the center of the cylinder is provided with a micropore 311 for fixing the optical fiber, and the outer diameter of the ferrule holder 32 is larger than the outer diameters of the ferrule 31 and the ferrule guide tube 33. The radial cross section of any position of the ferrule holder 32 is polygonal, and the ferrule holder 32 with a polygonal structure can be installed in a limiting manner by being inserted into the first accommodating cavity, so that the installation is more convenient and rapid, and the small-size space condition is extremely advantageous. One end of the ferrule base 32 close to the ferrule 31 is provided with a tapered transition section 34, and the tapered transition section 34 can facilitate the insertion and installation of the ferrule assembly 3. The inner wall of the first accommodating cavity is a polygonal structure matched with the outer wall of the ferrule holder 32, and the polygonal structure forms a first limiting part 11. When the first housing 1 is connected with the second housing 2 in an adaptive manner, the ferrule 31 extends out of the first accommodating cavity and extends for a preset length in a direction away from the second housing 2, and the first limiting member 11 is connected with the ferrule holder 31 in an adaptive manner.

The lock pin guide pipe 33 is of a cylindrical structure, the second accommodating cavity is of a cylindrical structure, a boss extending to the second accommodating cavity is arranged at one end, far away from the first shell 1, of the second shell 2, and the boss forms a second limiting part 21. When the first housing 1 is connected with the second housing 2 in an adaptive manner, the ferrule 31 and the ferrule holder 32 are disposed in the first accommodating cavity, a part of the ferrule guide tube 33 and the elastic element 4 close to one end of the ferrule holder 32 is disposed in the first accommodating cavity, and a part of the ferrule guide tube 33 and the elastic element 4 far from one end of the ferrule holder 32 is disposed in the second accommodating cavity. And one end of the elastic member 4 abuts against the ferrule holder 32 and the other end abuts against the boss, the elastic member 4 may be a spring, an elastic rod or other elastic member. The ferrule guide tube 33 extends out of the second accommodating chamber and extends a preset length in a direction away from the first housing 1. In practical applications, the installation of the ferrule guide tube 33 is very inconvenient because the ferrule guide tube 33 is connected to an optical cable. In this embodiment, by providing the notch 24 on the second housing 2, the elastic member 4 is compressed first to make the ferrule guide tube 33 be installed in the second accommodating cavity through the notch 24, and then the elastic member 4 is released to make the elastic member 4 extend into the second accommodating cavity, because the diameter of the elastic member 4 is greater than the width of the notch 24, the elastic member 4 restricts the ferrule guide tube 33 in the second accommodating cavity, thereby realizing the installation of the ferrule guide tube 33.

It is worth noting that in order to reduce costs, the ferrule assembly 3 can be configured as a standard fiber ferrule, such as: the LC ceramic ferrule is used, the ceramic ferrule body with the outer diameter of 1.25mm is a high-precision special ceramic element which is formed by processing a series of formulas and nanometer zirconia (ZrO2) materials, the error of the aperture and the roundness is 0.5 degree, the insertion loss is less than or equal to 0.2dB, and the return loss is more than or equal to 40 dB. The manufactured connector is a detachable and classified optical fiber movable connector, so that the connection, conversion and scheduling of optical channels are more flexible, and the optical communication system can be debugged and maintained.

In one embodiment, referring to fig. 1 to 4 of the specification, the optical fiber ferrule fixing structure is a two-core structure including: a first housing 1, a second housing 2 and two ferrule assemblies 3. The ferrule assembly 3 comprises a ferrule 31, a ferrule holder 32 and a ferrule guide tube 33 which are sequentially connected end to end, wherein an elastic member 4 is sleeved on the ferrule guide tube 33, and the inner diameter of the elastic member 4 is smaller than the outer diameter of the ferrule holder 32. The inside of first casing 1 is provided with two first chambeies that hold that are used for holding ferrule assembly 3 one end, and two first chambeies that hold set up along same axis direction interval, and every first intracavity that holds is provided with and is used for carrying on spacing first locating part 11 to the radial direction of plug core seat 32. The second casing 2 can be dismantled with first casing 1 and be connected, the inside of second casing 2 is provided with two seconds that are used for holding the other end of lock pin subassembly 3 and holds the chamber, two seconds hold the chamber and set up along same axis direction interval, second casing 2 is provided with two notch 24 that extend along its axis direction, two notch 24 are located the relative both sides of second casing 2 respectively, notch 24 holds the chamber with the second that corresponds respectively and switches on with the external world, the width of notch 24 is greater than the external diameter of lock pin guiding tube 33 and is less than the external diameter of elastic component 4, the second holds the chamber and keeps away from the one end of first casing 1 and is provided with and is used for carrying on spacing second locating part 21 to the axis direction of elastic component 4. The ferrule holder 32 is engaged with the first limiting member 11, and the elastic member 4 is engaged with the ferrule holder 32 and the second limiting member 21 to mount the ferrule assembly 3 in the first housing 1 and the second housing 2.

In one embodiment, the fiber stub fixing structure is a multi-core structure, which includes: a first housing 1, a second housing 2, and at least three ferrule assemblies 3. The ferrule assembly 3 comprises ferrules 31, ferrule holders 32 and ferrule guide tubes 33 which are sequentially connected end to end, each ferrule guide tube 33 is sleeved with an elastic piece 4, and the inner diameter of each elastic piece 4 is smaller than the outer diameter of each ferrule holder 32. The inside of first casing 1 is provided with at least three first chamber that holds that is used for holding ferrule assembly 3 one end, and at least three first chamber that holds sets up along same axis direction interval, and every first intracavity that holds is provided with and is used for carrying on spacing first locating part 11 to the radial direction of ferrule seat 32. The second casing 2 can be dismantled with first casing 1 and be connected, the inside of second casing 2 is provided with at least three second that is used for holding the lock pin subassembly 3 other end and holds the chamber, at least three second holds the chamber and sets up along same axis direction interval, second casing 2 is provided with at least three notch 24 that extends along its axis direction, at least three notch 24 is located same one side of second casing 2 respectively, notch 24 holds the chamber with the second that corresponds respectively and switches on with the external world, the width of notch 24 is greater than the external diameter of lock pin guide tube 33 and is less than the external diameter of elastic component 4, the second holds the one end that the chamber kept away from first casing 1 and is provided with and is used for carrying out spacing second locating part 21 to the axis direction of elastic component 4. Each ferrule holder 32 is engaged with the corresponding first limiting member 11, and the elastic member 4 is engaged with the ferrule holder 32 and the second limiting member 21 to mount the ferrule assembly 3 in the first housing 1 and the second housing 2. Of course, at least three first accommodating cavities can also be arranged at intervals along the circumferential direction, and at least three second accommodating cavities can also be arranged at intervals along the circumferential direction. The optical fiber ferrule fixing structure can also be applied to a single-core structure, and the application mode thereof is similar to that of a double-core structure, and is not described herein.

In an embodiment, referring to fig. 1 to 4 of the specification, on the basis of the above embodiment, the first limiting member 11 limits the radial direction of the ferrule holder 32, so as to prevent the ferrule assembly 3 from rotating in the first housing, and the second limiting member 21 limits the axial direction of the elastic member 4, so as to prevent the elastic member 4 from moving in the axial direction. After the optical fiber ferrule fixing structure is installed, the elastic member 4 is in a compressed state, one end of the elastic member 4 abuts against the ferrule holder 32, and the other end of the elastic member 4 abuts against the second limiting member 21, so that the ferrule assembly 3 is fixed in the axial direction. The second housing 2 is provided with a notch 24 extending along an axial direction thereof, the notch 24 communicates the second accommodating chamber with the outside, and a width of the notch 24 is larger than an outer diameter of the ferrule guide tube 33 and smaller than an outer diameter of the elastic member 4. Through setting up notch 24 and conveniently installing plug core subassembly 3, during the installation, put into the second through notch 24 with the one end that plug core guide tube 33 kept away from elastic component 4 earlier and hold the intracavity, hold the chamber with elastic component 4 again and pack into the second through the second one end that the chamber kept away from second locating part 21 and hold the chamber. Since the outer diameter of the elastic member 4 is smaller than the width of the notch 24, the elastic member 4 serves as a stopper to prevent the ferrule guide tube 33 from moving laterally. And the first shell 1 is used for limiting the core insert seat 32, and the second limiting piece 21 is used for axially limiting the elastic piece 4, so that the fixed installation of the core insert component 3 is realized. This structural installation is simple, need not with the help of the instrument, can make things convenient for the installation under the small-size space condition, only needs to install the lock pin subassembly 3 in second casing 2, inserts first casing with second casing 2 again and can realize the installation. Be provided with first connecting piece on the first casing 1, be provided with the second connecting piece on the second casing 2, first connecting piece and second connecting piece adaptation are connected for first casing 1 can be dismantled with second casing 2 and be connected.

In one embodiment, the first connector comprises at least one catch 12, the at least one catch 12 being arranged on an outer wall of the first housing 1; the second connecting piece includes at least one elasticity trip 22 with buckle 12 adaptation, and at least one elasticity trip 22 sets up on the outer wall of second casing 2, and every elasticity trip 22 and the buckle 12 adaptation that corresponds are connected for first casing 1 can dismantle with second casing 2 and be connected.

In one embodiment, referring to the specification, fig. 5 and fig. 6, the first housing 1 has a cylindrical structure, so that the external size of the first housing 1 can be as small as possible, and the installation under the condition of a small-sized space can be facilitated. Two sides of the circumference of the first shell 1 are provided with guide surfaces 13, one of the guide surfaces 13 is provided with a guide groove and a buckle 12, and the other guide surface 13 is provided with a guide groove. By providing the guide surface 13 and the guide groove to guide and position the mounting of the second housing 2, the assembly of the first housing 1 and the second housing 2 can be facilitated. The second casing 2 is a cylindrical structure, and the circumference both sides of second casing 2 are provided with the guide block 23 that extends to first casing 1 direction, are provided with elasticity trip 22 on one of them guide block 23, and elasticity trip 22 extends preset length to the direction that is close to first casing 1. The other guide block 23 is provided with a guide bar 26, and the guide bar 26 extends to a preset length in a direction close to the first housing 1. When the elastic hook 22 is connected with the buckle 12 in an adaptive manner, the guide block 23 is attached to the guide surface 13, and the guide strip 26 is inserted into the guide groove in an adaptive manner. The in-process that second casing 2 inserted first casing 1, elasticity trip 22 is arranged in the guiding groove and is moved to the direction that is close to buckle 12, until buckle 12 forces elasticity trip 22 to inwards progressively contract back and buckle 12 adaptation joint, and the unblock in-process forces elasticity trip 22 earlier to inwards progressively contract back and buckle 12 break away from the joint, and with second casing 2 again to keeping away from the pulling of first casing 1 direction. The guiding strip 26 may play a guiding role during the process of inserting the second housing 2 into the first housing 1, so as to facilitate the clamping of the second housing 2 with the first housing 1.

In one embodiment, the first connector comprises at least two latches 12, and the at least two latches 12 are spaced apart from each other on the outer wall of the first housing 1. The second connecting piece includes at least two elasticity trip 22 with buckle 12 adaptation, and at least two elasticity trip 22 intervals set up on the outer wall of second casing 2, and every elasticity trip 22 and the buckle 12 adaptation that corresponds are connected for first casing 1 can dismantle with second casing 2 and be connected.

In the above embodiment, the optical fiber ferrule fixing structure enables the use of a standard ferrule part under a small-sized space condition, and then the standard ferrule assembly 3 is used for the non-standard optical fiber connector by means of the first housing 1 and the second housing 2, so that the optical fiber connector has the same excellent performance as a standard connector; meanwhile, the detachable connection of the first shell 1 and the second shell 2 is realized through the structure, the installation is simple, the detachment is convenient, and the operation can be carried out by one hand without the help of tools.

It should be noted that, the specific structures of the first connecting piece and the second connecting piece are illustrated corresponding to the drawings in the specification, and in the actual use process, other ways may also be used to achieve the detachable connection of the first casing 1 and the second casing 2, such as by a thread way, a snap way, etc., which are only used for better illustrating the present invention and should not be construed as limiting the present invention.

In one embodiment, referring to fig. 6 of the specification, on the basis of the above embodiment, at least one reinforcing rib 25 is further provided at one end of the second housing 2 away from the first housing 1, and the reinforcing rib 25 is provided between two adjacent ferrule guide tubes 33. Not only can improve the intensity of second casing 2 through setting up strengthening rib 25, but also can make the interval setting between two adjacent second holding chambers littleer, and then can be with the size setting of connector housing littleer.

In one embodiment, referring to fig. 2 of the specification, on the basis of the above embodiment, the optical fiber ferrule fixing structure further includes: the locating body 5, the locating body 5 sets up in the one end that second casing 2 was kept away from to first casing 1 to along the axis direction extension of first casing 1 predetermines length, the locating body 5 be used for with the connector housing carry on spacingly. Such as: the positioning body 5 is a boss, a groove matched with the boss is arranged in the connector shell, and when the optical fiber ferrule fixing structure is installed in the connector shell in a matched mode, the boss is inserted in the groove in a matched mode, so that the optical fiber ferrule fixing structure is limited. The positioning body 5 in this embodiment is disposed in the axial direction of the first housing 1, and this structure can make the diameter of the first housing 1 as small as possible, thereby reducing the size of the connector housing, so as to be applied to the application scenario of a small-sized space.

It should be noted that, the specific structure of the positioning body 5 is described in correspondence to the drawings in the specification, and in the actual use process, other structures may also be used to realize the limit of the fiber ferrule fixing structure and the connector housing, which is only for better illustrating the present invention and should not be construed as a limitation to the present invention.

According to another aspect of the present invention, the present invention further provides an optical fiber connector including the optical fiber ferrule fixing structure described in any one of the above, further including: the connector shell, lock pin subassembly fixed knot construct the adaptation and install in the inside of connector shell.

The optical fiber connector realizes that a standard ferrule part is used under the condition of small-size space, and a standard ferrule assembly 3 can be used for the non-standard optical fiber connector by virtue of the first shell 1 and the second shell 2, so that the optical fiber connector has the same excellent performance as a standard connector; the single-mode insertion loss is optimized to 0.2dB from 1.5dB of the original non-standard part, so that the cost is reduced, the quality and the reliability of the part are improved, and the production and the assembly can be facilitated.

In the above embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to the related descriptions of other embodiments for parts that are not described or recited in detail in a certain embodiment.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. An optical fiber ferrule fixing structure, comprising:

each ferrule assembly is provided with an elastic piece;

the second shell is detachably connected with the first shell, at least one second accommodating cavity for accommodating the other end of the ferrule assembly is arranged in the second shell, and a second limiting piece for limiting the elastic piece is arranged at one end, far away from the first shell, of the second accommodating cavity;

2. The fiber optic ferrule holding structure according to claim 1,

the ferrule assembly comprises a ferrule, a ferrule base and a ferrule guide tube which are sequentially connected end to end, the elastic piece is sleeved on the ferrule guide tube, and the inner diameter of the elastic piece is smaller than the outer diameter of the ferrule base;

3. The fiber optic ferrule holding structure according to claim 2,

the first limiting piece limits the radial direction of the plug seat, and the second limiting piece limits the axial direction of the elastic piece;

4. The fiber optic ferrule holding structure according to claim 3,

the two ferrule assemblies are arranged, two first accommodating cavities are arranged in the first shell and are arranged at intervals along the same axial direction, two second accommodating cavities are arranged in the second shell and are arranged at intervals along the same axial direction, two notches are arranged on the second shell and are respectively positioned at two opposite sides of the second shell, and the notches are used for installing corresponding ferrule guide tubes and elastic pieces;

5. The fiber optic ferrule holding structure according to claim 4,

the ferrule is of a cylindrical structure, the center of the cylinder of the ferrule is provided with a micropore for fixing an optical fiber, and the outer diameter of the ferrule seat is larger than the outer diameters of the ferrule and the ferrule guide tube;

6. The fiber optic ferrule holding structure according to claim 5,

the ferrule guide tube is of a cylindrical structure, the second accommodating cavity is of a cylindrical structure, a boss extending to the second accommodating cavity is arranged at one end, far away from the first shell, of the second shell, and the boss forms the second limiting piece;

7. The fiber stub fixing structure according to any one of claims 1 to 6,

the first shell is provided with a first connecting piece, the second shell is provided with a second connecting piece, and the first connecting piece is connected with the second connecting piece in an adaptive mode, so that the first shell is detachably connected with the second shell.

8. The fiber optic ferrule holding structure according to claim 7,

the first connecting piece comprises at least one buckle, and the at least one buckle is arranged on the outer wall of the first shell;

9. The fiber optic ferrule holding structure according to claim 8,

the first connecting piece further comprises a guide groove, one buckle is arranged, and the guide groove and the buckle are respectively arranged on two opposite sides of the first shell;

10. The fiber optic ferrule holding structure according to claim 9,

the first shell is of a cylindrical structure, guide surfaces are arranged on two sides of the circumference of the first shell, and the guide grooves and the buckles are respectively arranged on the guide surfaces on the corresponding sides;

one end, far away from the first casing, of the second casing is further provided with at least one reinforcing rib, and the reinforcing rib is arranged between the two adjacent inserting core guide pipes.

11. The fiber stub fixing structure according to claim 1, further comprising:

12. An optical fiber connector comprising the fiber stub fixing structure according to any one of claims 1 to 11, further comprising: and the ferrule assembly fixing structure is mounted inside the connector shell in an adaptive manner.