CN115390196B

CN115390196B - Optical fiber connector

Info

Publication number: CN115390196B
Application number: CN202211231814.7A
Authority: CN
Inventors: 郑涛; 孙莹; 邹峰; 周江
Original assignee: Fiberhome Telecommunication Technologies Co Ltd
Current assignee: Fiberhome Telecommunication Technologies Co Ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2023-08-11
Anticipated expiration: 2042-09-30
Also published as: CN115390196A

Abstract

The application relates to an optical fiber connector, and relates to the technical field of optical fiber communication. The locking elastic buckle is clamped with the first clamping groove, the switching installation part is connected with the public installation part, so that when the connector main body is inserted into one of the switching pieces and the locking elastic buckle is not clamped with the first clamping groove, the locking elastic buckle is propped against the end part of the public installation part when the public installation part moves towards the direction close to the switching installation part, and when the locking elastic buckle is clamped with the first clamping groove, the public installation part can be connected with the switching installation part and the clamping part is pressed, and the switching piece matched with the adapter can be selected for field installation, thereby avoiding the problem that the whole optical cable is wasted due to unmatched optical cable length due to the adoption of the pre-connected optical cable, improving the universality.

Description

Optical fiber connector

Technical Field

The application relates to the technical field of optical fiber communication, in particular to an optical fiber connector.

Background

At present, the rapid development of the communication industry, the signal connectors such as the optical connector, the electric connector and the like are widely applied, and the signal connector is used as a standard connector, so that the signal connector has the characteristics of small volume, simplicity and convenience in operation and the like, the consumption is quite considerable, and along with the large-scale deployment of FTTH (Fiber To The Home ), the construction cost is reduced, the technical requirements of construction are reduced, and the application of pre-connection products for simplifying the construction difficulty is wider and wider.

In the laying process of the fiber-in section optical cable of the FTTH network, a field welding mode is usually adopted at present, namely, fiber ends corresponding to each household are distributed in a fiber dividing box, the fiber ends of each household and the fiber-in optical cable are welded in the fiber dividing box by using a fiber welding machine, then the fiber-in optical cable is laid to each household, and the other end of the fiber-in optical cable is required to be welded at one time so as to be connected with the fiber-in terminal box of each household, however, the field welding mode requires special fiber welding equipment, has higher technical requirements on operators, and is complex in operation process and time-consuming.

In the related art, there is also a mode that is preconnectorized, namely prefabricate the connector at the both ends of optical cable before leaving the factory, connect prefabricated connector to the equipment at both ends again, realize optic fibre and go home, although it compares the special optical fiber fusion equipment of the mode of first kind on-the-spot butt fusion that need not, also lower technical requirement to operating personnel, but the length of the optical cable that adopts preconnectorized can't be in on-the-spot construction change, the waste of optical cable has been caused, and when prefabricated connector disqualified, also can lead to whole optical cable to scrap, in addition, the adapter model that prefabricated connector can adapt is single, many times can not dock with the adapter of preconnectorized, the commonality is poor.

Disclosure of Invention

The embodiment of the application provides an optical fiber connector, which aims to solve the problems that the length of an optical cable adopting a prefabricated connector cannot be changed in site construction in the related art, so that the optical cable is wasted, and the prefabricated connector can be adapted to a single type of an adapter and has poor universality.

The present application provides an optical fiber connector, comprising:

a connector body including a first card slot and a common mounting portion;

each adaptor is used for being matched with adapters of different types, one adaptor is detachably arranged on the connector main body, and each adaptor comprises a locking elastic buckle and an adaptor mounting part; wherein,,

when the connector main body is inserted into one of the transfer pieces, and the locking elastic buckle is not clamped with the first clamping groove, the locking elastic buckle is used for propping against the end part of the public installation part when the public installation part moves towards the direction close to the transfer installation part, and when the locking elastic buckle is clamped with the first clamping groove, the public installation part can be connected with the transfer installation part and is used for pressing the clamping part.

In some embodiments, the connector body includes a tail jacket, the common mounting portion is an internal thread provided on an inner wall of the tail jacket, and the adapter mounting portion is an external thread provided on an outer wall of the adapter.

In some embodiments, the connector body includes a plug penetrating through the adapter, and an embedded optical fiber is disposed in the plug;

the connector body comprises a calibration piece which is sleeved on the plug and can slide to a preset position along the plug so as to be used for pressing optical fibers of the optical cable down to be aligned with the embedded optical fibers;

the plug is used for limiting the calibration piece in the thickness direction, when the calibration piece slides to a preset position, the plug releases limiting the calibration piece in the thickness direction, and the calibration piece can deform under the action of external force so as to be separated from the plug.

In some embodiments, the plug is provided with a sliding block, and the outer side wall of the plug is provided with a fourth limit groove which is L-shaped;

a connecting arm is arranged in the calibration piece, and a limit buckle is arranged on the inner side of the connecting arm;

the calibration piece is used for driving the slider to slide along the plug, when the calibration piece does not slide to the preset position, the limiting buckle is arranged in the fourth limiting groove along the axial groove in a sliding mode, when the calibration piece slides to the preset position, the slider is used for pressing down the optical fibers of the optical cable to be aligned with the embedded optical fibers, the limiting buckle is located at the corner of the fourth limiting groove and can be moved out of the fourth limiting groove under the action of external force.

In some embodiments, the calibration piece comprises two calibration plates and two extrusions;

the two calibration plates are symmetrically arranged, and the connecting arm is arranged on the inner side of one of the calibration plates;

each extrusion part comprises an extrusion plate and two connection plates which are obliquely arranged, the distance between the two connection plates is gradually increased, one end with larger distance is respectively connected with the calibration plate on the corresponding side, and one end with smaller distance is respectively connected with the extrusion plate.

In some embodiments, the outer sides of the connection parts of the extrusion plates and the connecting plates are respectively provided with a first guiding deformation groove, and the inner sides of the connection parts of each connecting plate and the calibration plate are respectively provided with a second guiding deformation groove.

In some embodiments, the connector body further comprises a sealing unit comprising a sealing housing, a push block, and a sealing block; wherein,,

the outer side wall of the sealing shell is provided with the first clamping groove along the circumferential direction of the sealing shell, and when the tail sheath moves towards the direction close to the transfer installation part, the pushing block is used for pushing the sealing shell and/or the sealing block to move under the driving of the tail sheath, so that the sealing block is accommodated in the sealing shell to seal an optical fiber.

In some embodiments, a first limit groove is formed in the outer side wall of the sealing shell;

each adaptor's inside wall all is equipped with first spacing protruding muscle, first spacing groove is used for when sealed shell stretches into in the adaptor, accept first spacing protruding muscle, in order to restrict sealed shell is relative the adaptor rotates along circumference.

In some embodiments, a second limiting groove is formed in the inner side wall of the sealing shell, a second limiting rib is arranged on the outer side wall of the push block, and the second limiting groove is used for accommodating the second limiting rib when the push block stretches into the sealing shell so as to limit the push block to rotate along the circumferential direction relative to the sealing shell.

In some embodiments, a third limiting rib is disposed on an inner side wall of the seal housing, and a third limiting groove is disposed on an outer side wall of the push block, and the third limiting groove is used for accommodating the third limiting rib when the push block extends into the seal housing, so as to limit the push block to rotate along a circumferential direction relative to the seal housing.

In some embodiments, the push block is provided with an avoidance through hole;

two symmetrically arranged clamping units are arranged at one end, close to the tail sheath, of the sealing shell, and an avoidance channel for the push block to penetrate is formed between the two clamping units;

When the tail sheath moves towards the direction close to the transfer installation part, the outer side walls of the two clamping units are abutted with the inner side walls of the tail sheath and used for relatively moving under the abutting driving of the tail sheath so as to clamp and fix the optical cable through the avoidance through hole.

In some embodiments, each clamping unit comprises an extension arm and a clamping piece arranged on the inner side of the extension arm; wherein,,

one end of the extension arm is connected with the sealing shell, and at least part of the outer side wall of the other end of the extension arm is inclined towards the direction approaching the pushing block along the direction away from the sealing shell;

the clamping piece is provided with at least one claw, and the claw is used for clamping and fixing the optical cable through the avoidance through hole when the tail sheath is connected with the switching installation part.

In some embodiments, the clamping member includes a clamping plate, the clamping plate is provided with a plurality of jaws disposed along an axial direction at intervals, and the clamping plate is disposed in an inclined manner along a direction away from the seal housing and a direction away from the avoidance through hole.

In some embodiments, an end of each adapter, which is far away from the adapter mounting portion, is provided with a docking portion; wherein,,

The cross section of the butt joint part is C-shaped; or alternatively, the first and second heat exchangers may be,

the cross section of the butt joint part comprises an arc-shaped section and at least two straight-line sections, and the at least two straight-line sections are positioned on the same side of the arc-shaped section; or alternatively, the first and second heat exchangers may be,

the cross section of the butt joint part is D-shaped; or (b)

The cross section of the butt joint part comprises at least two arc-shaped sections and at least two straight-line sections, and the straight-line sections and the arc-shaped sections are arranged in a staggered mode.

In some embodiments, a first sealing ring for sealing and connecting the sealing shell and the adapter is arranged on the outer side wall of the sealing shell;

the plug is sleeved with a dustproof cap, and a second sealing ring used for sealing and connecting the adapter and the dustproof cap is arranged between the dustproof cap and the adapter.

The technical scheme provided by the application has the beneficial effects that:

the embodiment of the application provides an optical fiber connector, because a connector main body comprises a first clamping groove and a public installation part, at least two adapter pieces are alternatively and detachably arranged on the connector main body, each adapter piece comprises a locking elastic buckle and an adapter installation part, the locking elastic buckle is clamped with the first clamping groove, the adapter installation part is connected with the public installation part, so that when the connector main body is inserted into one adapter piece, the locking elastic buckle is not clamped with the first clamping groove, the locking elastic buckle is used for abutting against the end part of the public installation part when the public installation part moves towards the direction close to the adapter installation part, and when the locking elastic buckle is clamped with the first clamping groove, the public installation part can be connected with the adapter installation part and press-holding the clamping part, therefore, the optical fiber connector can select the type of the adapter matched with the locking elastic buckle to be installed on site according to the requirement, the problem that when the connector main body is inserted into one adapter piece, the locking elastic buckle is not clamped with the first clamping groove, the locking elastic buckle is used for abutting against the end part of the public installation part when the public installation part moves towards the direction close to the adapter installation part, and the public installation part is not qualified, the universal buckle is also greatly improved, the problem that the universal connection is caused when the prefabricated connection is unqualified, and the connection is not qualified on site is guaranteed, and the connection is guaranteed, and the failure rate is guaranteed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a connector body when an optical cable of an optical fiber connector according to an embodiment of the present application is a round cable;

FIG. 2 is a schematic structural view of a connector body of an optical fiber connector according to an embodiment of the present application when an optical cable of the optical fiber connector is a butterfly cable;

FIG. 3 is a schematic view illustrating the installation of a connector body when an optical cable of an optical fiber connector according to an embodiment of the present application is a round cable;

FIG. 4 is a schematic view illustrating the installation of a connector body when the optical cable of the optical fiber connector according to the embodiment of the present application is a butterfly cable;

FIG. 5 is a schematic diagram illustrating the installation of a connector body and an adaptor when the optical cable of the optical fiber connector according to the embodiment of the present application is a round cable;

FIG. 6 is a schematic diagram illustrating the installation of a connector body and an adapter when the optical cable of the optical fiber connector according to the embodiment of the present application is a butterfly cable;

FIG. 7 is a cross-sectional view of an adaptor of an optical fiber connector according to an embodiment of the present application when the adaptor is not completely engaged with the adaptor body;

FIG. 8 is a schematic structural view of a calibration piece of an optical fiber connector according to an embodiment of the present application;

fig. 9 is a schematic structural diagram of a calibration member of an optical fiber connector sleeved on a plug according to an embodiment of the present application;

FIG. 10 is an exploded view of the optical fiber connector according to the embodiment of the present application when the sealing unit is abutted to the adaptor when the optical cable is a round cable;

FIG. 11 is a schematic diagram of a structure of a sealing unit in butt joint with an adaptor when an optical cable of an optical fiber connector according to an embodiment of the present application is a round cable;

FIG. 12 is a schematic view of a structure of a sealing unit in butt joint with an adaptor when an optical cable of an optical fiber connector according to an embodiment of the present application is a butterfly cable;

FIG. 13 is an exploded view of a seal unit when the optical cable of the optical fiber connector according to the embodiment of the present application is a butterfly cable;

FIG. 14 is a schematic cross-sectional view of a sealing unit when the optical cable of the optical fiber connector according to the embodiment of the present application is a butterfly cable;

FIG. 15 is an exploded view of a first adapter of an optical fiber connector according to an embodiment of the present application;

FIG. 16 is an exploded view of a second adapter of the fiber optic connector according to the present application;

FIG. 17 is an exploded view of a third adapter of an optical fiber connector according to an embodiment of the present application;

fig. 18 is an exploded view of a fourth adapter of an optical fiber connector according to an embodiment of the present application.

In the figure:

1-a connector body, 10-a first clamping groove, 11-a public mounting part, 12-a tail sheath, 13-a plug, 130-a sliding block and 131-a fourth limiting groove;

14-sealing units, 140-sealing shells, 1400-first sealing rings, 141-pushing blocks, 1410-avoiding through holes, 142-sealing blocks, 143-first limiting grooves, 144-second limiting grooves, 145-second limiting ribs, 146-third limiting ribs, 147-third limiting grooves, 148-clamping units, 1480-extension arms, 1481-clamping pieces, 1482-clamping jaws, 1483-clamping plates and 149-avoiding channels;

2-adapter, 20-locking elastic buckle, 21-adapter mounting part, 22-first limit rib, 23-butt joint part, 24 a-second sealing ring, 24 b-third sealing ring, 24 c-fourth sealing ring, 25 a-first inner liner, 25 b-first outer shell, 26 a-first structure, 26 b-second structure, 26 c-second outer shell, 27 a-third inner liner, 27 b-third outer shell, 28 a-fourth inner liner, 28 b-fourth outer shell, 28 c-elastic piece, 28 d-lock tongue, 28 e-unlocking pull rope, 3-optical cable, 30-optical fiber;

4-calibration piece, 40-connecting arm, 41-limit button, 42-calibration plate, 43-extrusion part, 430-extrusion plate, 431-connecting plate, 432-first guiding deformation groove, 433-second guiding deformation groove;

5-round cable fixing buckles and 6-butterfly cable fixing buckles.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The embodiment of the application provides an optical fiber connector, which can solve the problems that the length of an optical cable adopting a prefabricated connector cannot be changed in site construction, so that the optical cable is wasted, and the prefabricated connector can be adapted to an adapter with a single model and poor universality.

Referring to fig. 1, fig. 2, fig. 5 and fig. 6, this fiber optic connector includes connector main part 1 and two at least adaptor 2, connector main part 1 is used for wearing to locate on optical cable 3, optical cable 3 can be circular optical cable 3, also can be butterfly-shaped optical cable 3, connector main part 1 specifically includes first draw-in groove 10 and public installation department 11, each adaptor 2 all is used for the adapter cooperation with different models, at least two adaptor 2 one detachably locate on connector main part 1, each adaptor 2 all includes locking elastic buckle 20 and adaptor installation department 21, locking elastic buckle 20 and first draw-in groove 10 block, adaptor installation department 21 links to each other with public installation department 11, that is to say, the locking elastic buckle 20 on each adaptor 2 and the structure of adaptor installation department 21 can be approximately the same, make the sharing of public installation department 11 all can be installed to same public installation department 11, and each adaptor 2 can be with the optical cable 2 of different models and the adaptor is the optical cable 2 is not need to go on the length to the adaptor to the explanation when the adaptor is used for the optical cable 2 is all to the adaptor is wasted according to the general connection, the optical cable 3 has been avoided in fact that the adaptor is worn out, the length is high enough to be connected with the adaptor 3, the adaptor is required to be connected to the general connector, the connector has been greatly damaged in fact, the connection has been realized, the connector has been made, the connector has the problem is easy to be used in the connection 3 is easy to the general connector has been used.

In this embodiment, as shown in fig. 7, when the connector body 1 is inserted into one of the adaptor 2 and the locking elastic buckle 20 is not engaged with the first clamping groove 10, the locking elastic buckle 20 is used to deform under the abutment of the connector body 1 and protrude out of the surface of the same, so that when the public mounting portion 11 moves in a direction approaching to the adaptor mounting portion 21, the locking elastic buckle 20 abuts against an end portion of the public mounting portion 11 to prevent the public mounting portion 11 from being fixedly connected to the adaptor mounting portion 21, and when the locking elastic buckle 20 is engaged with the first clamping groove 10, the locking elastic buckle 20 is restored to release the limit of the public mounting portion 11, so that the public mounting portion 11 continues to move forward to be connected to the adaptor mounting portion 21 and press the engaged portion, where the public mounting portion 11 and the adaptor mounting portion 21 may be in threaded connection, or may be in other suitable connection modes such as clamping. The pre-connection is performed in an installation workshop and other places in advance, so that the assembly qualification rate is guaranteed, the assembly difficulty is increased due to environmental or other reasons during on-site installation, the assembly qualification rate is reduced, the foolproof arrangement of the locking elastic buckle 20 solves the problem of lower on-site assembly qualification rate to a great extent, when the connector main body 1 and the adapter 2 are not installed in place, the locking elastic buckle 20 cannot be clamped with the first clamping groove 10 and is always in a deformed state, and the connection of the public installation part 11 and the adapter installation part 21 is blocked, so that the situation that the connector main body 1 and the adapter 2 are not installed in place can be basically avoided due to the design of the structure, and the on-site installation assembly qualification rate is guaranteed; in addition, after the connection between the public installation part 11 and the switching installation part 21 is completed, the public installation part 11 is pressed and held on the locking elastic buckle 20, so that the locking elastic buckle 20 is prevented from being separated from the first clamping groove 10 in the connection state, the connection stability is ensured, and the pulling force is enhanced.

Further, referring to fig. 5 and 6, the connector body 1 may include a tail jacket 12, when the tail jacket 12 is not connected to the adaptor 2, the tail jacket 12 may be movably sleeved on the optical cable 3, the common mounting portion 11 may be an internal thread provided on an inner wall of the tail jacket 12, and the adaptor mounting portion 21 is an external thread provided on an outer wall of the adaptor 2, that is, the tail jacket 12 is in threaded connection with the adaptor 2, where the tail jacket 12 is in threaded connection with the adaptor 2, which is advantageous in that, even if the tail jacket 12 is loosened due to various reasons or is not safely twisted when being initially installed, the tail jacket 12 is still connected to the adaptor 2, and the engagement portion of the locking elastic buckle 20 and the first clamping groove 10 is still pressed, even if the locking elastic buckle 20 is still unable to spring up under a stressed state, so that a basic function can be ensured.

Further, referring to fig. 3 and 4, the connector body 1 includes a plug 13 penetrating through the adaptor 2, a cavity is formed in the plug 13, the cavity can accommodate an optical fiber 30 of the optical cable 3, and an embedded optical fiber is further disposed in the cavity, when the optical cable 3 is a round optical cable 3, the connector body 1 further includes a round cable fixing buckle 5, when the optical cable 3 is installed on site, an end portion of the optical cable 3 needs to be stripped, the optical fiber 30 located inside the optical cable leaks, the round cable fixing buckle 5 is used for being located at an end portion of the stripped optical cable 3, the plug 13 is fixed on the round cable fixing buckle 5 to be connected and fixed with the optical cable 3, and when the optical cable 3 is a butterfly optical cable 3, the connector body 1 further includes a butterfly cable fixing buckle 6, and the acting and setting positions of the butterfly cable fixing buckle are the same as those of the round cable fixing buckle 5, so that the tail jacket 12 and the plug 13 can be separately set. After the optical fiber 30 of the optical cable 3 is inserted into the plug 13, the optical fiber 30 needs to be abutted with an embedded optical fiber pre-embedded in the plug 13, and the embedded optical fiber can be abutted with the optical fiber in the adapter after the plug 13 is inserted into the adapter, so that the transmission of an optical signal is realized, however, after the optical fiber 30 of the optical cable 3 is inserted into the plug 13, the optical fiber 30 may not be on the same axis with the embedded optical fiber, therefore, the connector main body 1 further comprises a calibration piece 4, the calibration piece 4 and the tail sheath 12 can be separately arranged, the calibration piece 4 is sleeved on the plug 13 and can slide back and forth within a certain range along the axial direction of the plug 13, so that the optical fiber 30 of the optical cable 3 is pressed down to be aligned with the embedded optical fiber, that is, namely, the calibration piece 4 plays a role in calibrating the position of the optical fiber 30 of the optical cable 3 inserted into the plug 13, so that the optical signal transmission can be normally and stably performed after the optical fiber connector is abutted with the adapter.

In this embodiment, the plug 13 is further configured to limit the alignment member 4 in the thickness direction, that is, the plug 13 limits the alignment member 4 from moving relatively to the thickness direction, and when the alignment member 4 slides to a preset position, the plug 13 can release the limit of the alignment member 4 in the thickness direction, the alignment member 4 can deform under the action of external force so as to be separated from the plug 13, that is, after the alignment member 4 presses the optical fiber 30 of the optical cable 3 into alignment with the embedded optical fiber, the alignment member 4 can deform under the action of external force so as to separate from the plug 13, and here, the deformation under the action of external force can apply a certain force to the alignment member 4 directly by an operator, or an operator can apply a certain force to the alignment member 4 by using an auxiliary tool. Because the installation step is easy to forget or miss when the field assembly is carried out on the construction site, the structural design of the calibration piece 4 ensures that the calibration piece 4 cannot be taken down from the plug 13 when the step is not operated, and the calibration piece 4 can be smoothly taken down from the plug 13 after the installation step of the part is completed, and the foolproof design of the calibration piece 4 ensures the assembly qualification rate when the field assembly is carried out.

Further, referring to fig. 1, fig. 2, fig. 8 and fig. 9, the plug 13 is provided with a slider 130, the slider 130 is matched with the calibration piece 4 and is used for sliding along the plug 13 under the driving of the calibration piece 4, when the calibration piece 4 slides to a preset position, the slider 130 is used for pressing down the optical fiber 30 of the optical cable 3 to align with the embedded optical fiber, the outer side wall of the plug 13 is provided with a fourth limit groove 131, the fourth limit groove 131 is L-shaped, that is, the fourth limit groove 131 comprises two grooves, one groove is arranged along the parallel axial direction, the other groove is communicated with and vertically arranged, the corresponding calibration piece 4 is internally provided with a connecting arm 40, the inner side of the connecting arm 40 is provided with a limit buckle 41, the inner side of the connecting arm 40 is closer to one side of the plug 13, the number of the connecting arm 40 can be one or two symmetrically arranged, the preset position can be the position from the calibration piece 4 to the limit buckle 41 to the position at the corner of the fourth limit groove 131, or the limit buckle 41 slides to a certain position along the parallel axial direction. In this embodiment, preferably, the number of the connecting arms 40 is two, and corresponding, the two sides of the plug 13 are respectively provided with the fourth limiting groove 131, when the calibration member 4 is sleeved on the plug 13, the limiting buckle 41 arranged on the inner side of the connecting arm 40 is slidably arranged in the groove arranged along the parallel axial direction, when the calibration member 4 does not slide to the preset position, that is, when the optical fiber 30 is not calibrated yet, the groove arranged along the parallel axial direction limits the calibration member 4 along the thickness direction, so that the calibration member 4 cannot be separated from the plug 13, when the calibration member 4 slides along the direction driving sliding block 130 away from the tail sheath 12 and slides to the preset position, the optical fiber 30 is calibrated, the limiting buckle 41 is positioned at the corner of the fourth limiting groove 131, and is moved out of the fourth limiting groove 131 under the action of external force, thereby realizing the separation from the plug 13.

Further, referring to fig. 8 and 9, the calibration member 4 specifically includes two calibration plates 42 and two pressing portions 43, the two calibration plates 42 are symmetrically spaced along the direction perpendicular to the axial direction of the optical cable 3, and the inner side of one calibration plate 42 is provided with a connecting arm 40, where the inner side refers to the adjacent side of the two calibration plates 42, that is, the side close to the optical cable 3, the connecting arm 40 may be disposed on the calibration plate 42 above the optical cable 3 or on the calibration plate 42 below the optical cable 3, each pressing portion 43 includes one pressing plate 430 and two connection plates 431 disposed in an inclined manner, the distance between the two connection plates 431 is gradually increased, one end with a larger distance is connected to the calibration plate 42 on the corresponding side, and one end with a smaller distance is connected to the pressing plate 430, where the two connection plates 431 may be symmetrically disposed or asymmetrically disposed. In this embodiment, the connecting arm 40 may be disposed on the calibration plate 42 above the optical cable 3, so that an operator can conveniently determine whether the limit buckle 41 slides out of the slot when taking down, the two connecting plates 431 are symmetrically disposed, the operator holds the extrusion plate 430 simultaneously and applies a certain extrusion force, the two extrusion plates 430 move in opposite directions under the action of external force, so as to drive the two calibration plates 42 to move in opposite directions, and drive the limit buckle 41 to slide out of the slot in the opposite moving process, so that the calibration piece 4 is smoothly taken down from the plug 13.

Further, referring to fig. 8 and 9, the outer sides of the connection positions of the extrusion plates 430 and the connection plates 431 are respectively provided with a first guiding deformation groove 432, the inner sides of the connection positions of each connection plate 431 and the calibration plates 42 are respectively provided with a second guiding deformation groove 433, and the first guiding deformation grooves 432 and the second guiding deformation grooves 433 can guide the extrusion plates 430 and the connection plates 431 to deform towards corresponding directions when external force is applied, so that the two calibration plates 42 can be driven to move in opposite directions, and the limit buckles 41 are separated from the fourth limit grooves 131, so that the calibration pieces 4 and the plugs 13 can be smoothly separated.

Further, referring to fig. 11 and 12, the connector body 1 further includes a sealing unit 14, where the sealing unit 14 includes a sealing housing 140, a pushing block 141 and a sealing block 142, and an outer side wall of the sealing housing 140 is provided with a first clamping groove 10 along a circumferential direction of the sealing housing, and the first clamping groove 10 may be an annular groove or an arc groove, and the number of the first clamping grooves is consistent with that of the locking elastic buckles 20, in this embodiment, the first clamping groove 10 is preferably an annular groove, so as to reduce alignment difficulty when an operator installs the connector, facilitate field installation, and when the tail jacket 12 moves towards a direction approaching the adapting installation portion 21, the pushing block 141 is used to push the sealing housing 140 and/or the sealing block 142 to move under the driving of the tail jacket 12, so that the sealing block 142 is accommodated in the sealing housing 140 to seal the optical cable 3.

Further, referring to fig. 11 and 12, the outer side wall of the sealing shell 140 is provided with a first limiting groove 143, the first limiting groove 143 may be perpendicular to the first clamping groove 10 along the parallel axial direction, or may deviate slightly from the axial direction, the first limiting groove 143 may be communicated with the first clamping groove 10, or may not be communicated with the first clamping groove 10, in this embodiment, preferably, the first limiting groove 143 is perpendicular to the first clamping groove 10 along the parallel axial direction and is communicated with the first clamping groove 10, and the inner side wall of each adapter 2 is correspondingly provided with a first limiting rib 22, and the first limiting groove 143 is used for accommodating the first limiting rib 22 when the sealing shell 140 stretches into the adapter 2, so as to limit the sealing shell 140 to rotate along the circumferential direction relative to the adapter 2, thereby preventing the problem that the sealing performance of the optical cable 3 is affected when the sealing shell 140 is driven to rotate along with the rotation of the tail sheath 12 when the tail sheath 12 is connected with the adapter 2. The size of the end of the first limiting groove 143 near the adapter 2 gradually increases along the direction near the adapter 2, and is in a shape similar to a horn, so as to reduce the difficulty of the first limiting rib 22 when being in butt joint with the first limiting rib, and play a role in guiding to a certain extent.

Further, referring to fig. 10 and 11, when the optical cable 3 is a circular optical cable 3, the push block 141 is similar to the sealing shell 140 in shape and is also similar to a cylinder structure, at this time, the inner side wall of the sealing shell 140 is provided with a second limiting groove 144, the second limiting groove 144 is provided along the end portion of the sealing shell 140 near the tail sheath 12,

the outer side wall of the push block 141 is correspondingly provided with a second limiting convex rib 145, when the tail sheath 12, the sealing unit 14, the round cable fixing piece and the plug 13 are installed on the optical cable 3, a proper adaptor 2 is selected according to the type of the adaptor to be installed, the plug 13 is inserted into the adaptor 2, the adaptor 2 is sleeved on the plug 13 and is fixed along the axial direction, at the moment, the tail sheath 12 is driven to move towards the direction close to the adaptor 2, and the push block 141, the sealing block 142 and the sealing shell 140 are driven to move in the moving process, the sealing shell 140 can be abutted against the round cable fixing piece, so that the push block 141 pushes the sealing block 142 to enter the sealing shell 140 along the backward and forward direction under the driving of the tail sheath 12, and the optical cable 3 penetrating the push block is sealed; here, at least a portion of the push block 141 may also extend into the seal housing 140, and the second limiting groove 144 is configured to receive the second limiting rib 145 when the push block 141 extends into the seal housing 140, so as to limit the push block 141 from rotating circumferentially relative to the seal housing 140, thereby ensuring that the push block is not driven to rotate axially when the tail jacket 12 is connected to the rotating member, and ensuring the sealing performance of the optical cable 3.

Further, referring to fig. 12 and 13, when the optical cable 3 is a butterfly-shaped optical cable 3, the shape of the push block 141 is different from that of the seal housing 140, the push block 141 is in a strip and flat structure, at this time, the inner side wall of the seal housing 140 is provided with a third limit rib 146, the outer side wall of the push block 141 is provided with a third limit groove 147, when the tail sheath 12, the seal unit 14, the cable fixing member and the plug 13 are all installed on the optical cable 3, according to the type of the adaptor required to be installed, a proper adaptor 2 is selected, the plug 13 is inserted into the adaptor 2, the adaptor 2 is sleeved on the plug 13 and fixed along the axial direction, at this time, the tail sheath 12 is driven to move towards the direction close to the adaptor 2, and in the moving process, the push block 141, the seal housing 140 and the seal block 142 are driven to move, one end of the seal block 142 can be abutted and fixed with the butterfly cable fixing member, the other end of the seal block 142 can be abutted and fixed with the push block 141, and the seal block 142 can enter the seal housing 140 along the front-back direction, and also enter the seal housing 140 along the front-back direction, and can enter the rear direction and the sealing housing 140 along the front-back direction, and can also enter the direction and enter the sealing housing 12 and be connected with the sealing housing 12, and the sealing housing 3 when connected with the adaptor and the sealing housing 3; here, at least a portion of the push block 141 may also extend into the seal housing 140, and the third limiting groove 147 is configured to accommodate the third limiting rib 146 when the push block 141 extends into the seal housing 140, so as to limit the push block 141 from rotating circumferentially relative to the seal housing 140, thereby ensuring that the push block 141 is not driven to rotate axially when the tail jacket 12 is connected with the rotating member, and ensuring the sealing performance of the optical cable 3.

Specifically, the sealing block 142 has a cylindrical structure, and protrudes outward along the circumferential direction thereof, and is internally provided with a through hole through which the optical cable 3 is threaded, but the size of the through hole is smaller than the actual size of the optical cable 3, so that the optical cable 3 is pressed while passing through the sealing block 142, thereby forming a seal with the sealing block 142. Both ends of the perforation are in a horn-like shape so as to guide the optical cable 3 to penetrate, and the difficulty of alignment is reduced to a certain extent.

Further, referring to fig. 13 and 14, an avoidance through hole 1410 is formed in the push block 141, the avoidance through hole 1410 may be a hole with a larger overall size, or may be a plurality of holes with smaller sizes that are arranged along an axial direction at intervals, one end of the seal housing 140, which is close to the tail sheath 12, is provided with two symmetrically arranged clamping units 148, an avoidance channel 149 for the push block 141 to penetrate is formed between the two clamping units 148, that is, the push block 141 extends into the seal jacket to support and fix the seal block 142 under the driving of the tail sheath 12 through the avoidance channel 149, when the tail sheath 12 moves towards the direction close to the adapting installation portion 21, the outer side walls of the two clamping units 148 can abut against the inner side wall of the tail sheath 12 and are used for relatively moving under the support and holding driving of the tail sheath 12, that is, along with the continuous movement of the tail sheath 12 towards the direction close to the adapting piece 2, relatively moving support and holding force is applied to the two clamping units 148, and the two clamping units 148 clamp and fix the seal block 142 through the through hole 1410 under the driving of the support and holding force, so as to realize higher tension requirements.

Further, referring to fig. 13 and 14, each of the holding units 148 includes an extension arm 1480 and a holding member 1481 disposed inside the extension arm 1480, wherein one end of the extension arm 1480 is connected to the seal housing 140, and the connection manner may be an integral molding or other suitable connection manner, such as a clamping connection, etc., and at least a part of the outer side wall of the other end of the extension arm 1480 is inclined in a direction away from the seal housing 140 toward the push block 141, and correspondingly, the end of the tail jacket 12 provided with the common mounting portion 11 is also configured to be gradually enlarged toward the direction toward the extension arm 1480, so as to match the shape of the extension arm 1480; wherein, the clamping member 1481 is provided with at least one claw 1482, the claw 1482 is used for clamping and fixing the optical cable 3 through the avoiding through hole 1410 when the tail sheath 12 is connected with the adapting mounting portion 21, and when the claw 1482 clamps and fixes the optical cable 3, at least part of the claw 1482 is sunk into the surface of the optical cable 3 to fix the optical cable 3 due to the certain deformability of the surface layer material of the optical cable 3.

Further, referring to fig. 13 and 14, the holding member 1481 specifically includes a holding plate 1483, where the holding plate 1483 is fixed on the extension arm 1480 on the corresponding side, and the connection manner between the holding plate 1483 and the extension arm 1480 may be an integral molding, or may be other suitable connection manners such as clamping, and when the holding plate 1481 is an integral molding, the material of the holding member 1481 and the extension arm 1480 are the same, and when the holding plate 1481 is a clamping, the material of the holding member 1481 and the extension arm 1480 may be the same, or may be different, or may be a metal material; in this embodiment, the material of the holding member 1481 is preferably a metal material, and is clamped with the extension arm 1480, the holding plate 1483 is provided with a plurality of claws 1482 arranged along the axial direction at intervals, from the perspective of convenient manufacture, the claws 1482 are formed by bending the holding plate 1483 towards the direction close to the optical cable 3, the corresponding avoidance through holes 1410 on the push block 141 are holes with larger overall size, the holding plate 1483 is obliquely arranged along the direction away from the sealing shell 140 and away from the avoidance through holes 1410, and the progressive increase of the holding force of the claws 1482 on the optical cable 3 is ensured.

Further, referring to fig. 15 to 18, an end of each adapter 2 far away from the adapter mounting portion 21 is provided with a butt joint portion 23, wherein the cross section of the butt joint portion 23 may be C-shaped, the cross section of the butt joint portion 23 may include an arc-shaped section and at least two straight-line sections, the at least two straight-line sections are located on the same side of the arc-shaped section, the cross section of the butt joint portion 23 may be D-shaped, the cross section of the butt joint portion 23 may further include at least two arc-shaped sections and at least two straight-line sections, and the straight-line sections and the arc-shaped sections are staggered. As can be appreciated from the above structure of the docking portion 23, the types of the adaptor 2 may include four types, namely, a first adaptor, a second adaptor, a third adaptor and a fourth adaptor, wherein the cross section of the docking portion 23 of the first adaptor may be C-shaped, the first adaptor may include a first inner liner 25a and a first outer shell 25b, one end of the first inner liner 25a is provided with a docking mounting portion 21, the other end of the first inner liner 25a is provided with a docking portion 23, the first outer shell 25b is sleeved outside the first inner liner 25a, and when the first adaptor is mounted on the connector body 1, the connector body 1 can be docked with an adaptor with an interface of a C-shaped slot; the cross section of the abutting portion 23 of the second adaptor may include an arc-shaped section and at least two straight-line sections, the at least two straight-line sections are located on the same side of the arc-shaped section, the second adaptor may include a second inner liner and a second outer shell 26c, the second inner liner includes two independent first structures 26a and second structures 26b, adjacent ends of the first structures 26a and the second structures 26b are all penetrated in the second outer shell 26c, one end of the first structures 26a extending out of the second outer shell 26c is provided with the abutting portion 23, one end of the second structures 26b extending out of the second outer shell 26c is provided with the adaptor mounting portion 21, the structural shape of the abutting portion 23 of the second adaptor is that two planes are cut out on the same side on the basis of a cylinder, and sharp corners are formed between the two planes, so that the abutting portion 23 of the second adaptor matches the shape of the slot of the adaptor, and when the second adaptor is mounted on the connector body 1, the connector body 1 can be matched with the slot of the adaptor; the cross section of the abutting portion 23 of the third adaptor may be D-shaped, the third adaptor may include a third inner liner 27a and a third outer shell 27b, one end of the third inner liner 27a is provided with the abutting portion 23, the other end is provided with the adaptor mounting portion 21, the third outer shell 27b is provided on the third inner liner 27a, and one side close to the abutting portion 2 is provided with a threaded connection portion, when the third adaptor is mounted on the connector body 1, the connector body 1 can be abutted with an adapter with an interface of a D-shaped slot; the cross section of the abutting portion 23 of the fourth adaptor can comprise at least two arc sections and at least two straight line sections, the straight line sections and the arc sections are arranged in a staggered mode, the fourth adaptor can comprise a fourth inner liner 28a and a fourth outer shell 28b, one end of the fourth inner liner 28a is provided with an adaptor mounting portion 21, the other end of the fourth inner liner 28a is provided with the abutting portion 23, the fourth outer shell 28b is sleeved on the fourth inner liner 28a, the fourth adaptor can be further provided with an elastic piece 28c and a lock tongue 28d, the fourth inner liner 28a can be pressed into the fourth outer shell 28b through the elastic piece 28c and the lock tongue 28d, the abutting portion 23 of the fourth adaptor is formed by cutting two parts on the basis of a cylinder, two planes are formed on two opposite sides, an arc part is formed between the two planes, and the straight line sections and the arc sections are arranged in a staggered mode, so that when the fourth adaptor is mounted on the connector main body 1, the connector main body 1 can realize the abutting portion 23 is matched with the shape of the slot of the adaptor, and the fourth adaptor main body 1 can be matched with the fourth adaptor slot, and the fourth adaptor can be used for unlocking the adaptor 28 e.

Further, the outer side wall of the sealing shell 140 is provided with a first sealing ring 1400 for sealing and connecting the sealing shell 140 and the adapter 2, the plug 13 is sleeved with a dustproof cap, the types of the dustproof caps are four, the types of the dustproof caps respectively correspond to four different adapters 2, a second sealing ring 24a for sealing and connecting the adapter 2 and the dustproof cap is arranged between the adapter 2 and the dustproof cap, the positions of the second sealing rings 24a of different types of adapters 2 are different, the second sealing ring 24a of the first adapter is arranged on the outer wall of the corresponding dustproof cap, the dustproof cap stretches into the first adapter when being in butt joint with the first adapter, and a third sealing ring 24b is arranged between the first inner liner 25a of the first adapter and the first outer shell 25 b; the second sealing ring 24a of the second adapter is arranged between the abutting part 23 and the first structure 26a, the dustproof cap is sleeved on the second adapter, and the first structure 26a and the second structure 26b of the second adapter are sealed by dispensing; the second sealing ring 24a of the third adapter is arranged on the third liner 27a, and the dustproof cap is sleeved on the third adapter; the second sealing ring 24a of the fourth adapter is arranged on the outer wall of the corresponding dust cap, the dust cap stretches into the fourth adapter when being in butt joint with the fourth adapter, and a fourth sealing ring 24c is arranged between the fourth inner liner 28a and the fourth outer shell 28 b. The four different types of the adapter pieces 2 are provided with corresponding sealing forms, so that the field-mounted optical fiber connector has better waterproof performance, is suitable for more application environments and ensures basic functions.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present application and simplifying the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

It should be noted that in the present application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are 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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is only a specific embodiment of the application to enable those skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An optical fiber connector, comprising:

the connector body (1) comprises a first clamping groove (10), a public installation part (11), a tail sheath (12), a plug (13) and a calibration piece (4), wherein the public installation part (11) is an internal thread arranged on the inner wall of the tail sheath (12), an embedded optical fiber is arranged in the plug (13), the calibration piece (4) is sleeved on the plug (13) and can slide to a preset position along the plug (13) so as to be used for pressing down an optical fiber (30) of an optical cable (3) to be aligned with the embedded optical fiber, the plug (13) is used for limiting the calibration piece (4) in the thickness direction, and when the calibration piece (4) slides to the preset position, the plug (13) releases the limit of the calibration piece (4) in the thickness direction, and the calibration piece (4) can deform under the action of an external force so as to be separated from the plug (13);

Each adaptor (2) is used for being matched with adapters of different types, one adaptor (2) is detachably arranged on the connector main body (1), each adaptor (2) is provided with a plug (13) in a penetrating mode, each adaptor (2) comprises a locking elastic buckle (20) and an adaptor mounting part (21), and the adaptor mounting part (21) is an external thread arranged on the outer wall of the adaptor (2); wherein,,

when the connector main body (1) is inserted into one of the adaptor (2) and the locking elastic buckle (20) is not clamped with the first clamping groove (10), the locking elastic buckle (20) is used for abutting against the end part of the public installation part (11) when the public installation part (11) moves towards the direction close to the adaptor installation part (21), and when the locking elastic buckle (20) is clamped with the first clamping groove (10), the public installation part (11) can be connected with the adaptor installation part (21) and the clamping part is pressed; wherein,,

a sliding block (130) is arranged on the plug (13), a fourth limiting groove (131) is formed in the outer side wall of the plug (13), and the fourth limiting groove (131) is L-shaped;

a connecting arm (40) is arranged in the calibration piece (4), and a limit buckle (41) is arranged on the inner side of the connecting arm (40);

The calibration piece (4) is used for driving the sliding block (130) to slide along the plug (13), when the calibration piece (4) does not slide to the preset position, the limit buckle (41) is arranged in the fourth limit groove (131) in a sliding mode along the axial direction, when the calibration piece (4) slides to the preset position, the sliding block (130) is used for pressing the optical fiber (30) of the optical cable (3) down to be aligned with the embedded optical fiber, and the limit buckle (41) is positioned at the corner of the fourth limit groove (131) and can be moved out of the fourth limit groove (131) under the action of external force.

2. An optical fiber connector as defined in claim 1, wherein:

the calibration piece (4) comprises two calibration plates (42) and two pressing parts (43);

the two calibration plates (42) are symmetrically arranged, and the connecting arm (40) is arranged on the inner side of one calibration plate (42);

each extrusion part (43) comprises an extrusion plate (430) and two connection plates (431) which are obliquely arranged, the distance between the two connection plates (431) is gradually increased, one ends with larger distances are respectively connected with the calibration plates (42) on the corresponding sides, and one ends with smaller distances are respectively connected with the extrusion plate (430).

3. An optical fiber connector as defined in claim 2, wherein:

The outer sides of the connection positions of the extrusion plates (430) and the connecting plates (431) are respectively provided with a first guide deformation groove (432), and the inner sides of the connection positions of the connecting plates (431) and the calibration plates (42) are respectively provided with a second guide deformation groove (433).

4. An optical fiber connector as defined in claim 1, wherein:

the connector body (1) further comprises a sealing unit (14), wherein the sealing unit (14) comprises a sealing shell (140), a pushing block (141) and a sealing block (142); wherein,,

the outer side wall of the sealing shell (140) is provided with the first clamping groove (10) along the circumferential direction of the sealing shell, when the tail sheath (12) moves towards the direction close to the transfer installation part (21), the pushing block (141) is used for pushing the sealing shell (140) and/or the sealing block (142) to move under the driving of the tail sheath (12), so that the sealing block (142) is contained in the sealing shell (140) to seal the optical cable (3).

5. An optical fiber connector as defined in claim 4, wherein:

the outer side wall of the sealing shell (140) is provided with a first limit groove (143);

each adaptor (2) is provided with a first limiting convex rib (22) on the inner side wall, and the first limiting groove (143) is used for accommodating the first limiting convex ribs (22) when the sealing shell (140) stretches into the adaptor (2) so as to limit the sealing shell (140) to rotate along the circumferential direction relative to the adaptor (2).

6. An optical fiber connector as defined in claim 5, wherein:

the second limiting groove (144) is formed in the inner side wall of the sealing shell (140), the second limiting convex rib (145) is arranged on the outer side wall of the pushing block (141), and the second limiting groove (144) is used for accommodating the second limiting convex rib (145) when the pushing block (141) stretches into the sealing shell (140) so as to limit the pushing block (141) to rotate relative to the sealing shell (140) along the circumferential direction.

7. An optical fiber connector as defined in claim 5, wherein:

the inner side wall of the sealing shell (140) is provided with a third limiting convex rib (146), the outer side wall of the pushing block (141) is provided with a third limiting groove (147), and the third limiting groove (147) is used for accommodating the third limiting convex rib (146) when the pushing block (141) stretches into the sealing shell (140) so as to limit the pushing block (141) to rotate relative to the sealing shell (140) along the circumferential direction.

8. An optical fiber connector as defined in claim 5, wherein:

the pushing block (141) is provided with an avoidance through hole (1410);

two symmetrically arranged clamping units (148) are arranged at one end, close to the tail sheath (12), of the sealing shell (140), and an avoidance channel (149) used for the push block (141) to penetrate is formed between the two clamping units (148);

When the tail sheath (12) moves towards the direction close to the transfer installation part (21), the outer side walls of the two clamping units (148) are abutted with the inner side walls of the tail sheath (12) and used for relatively moving under the abutting drive of the tail sheath (12) so as to clamp and fix the optical cable (3) through the avoidance through holes (1410).

9. An optical fiber connector as recited in claim 8, wherein:

each of the clamping units (148) comprises an extension arm (1480) and a clamp (1481) provided inside the extension arm (1480); wherein,,

one end of the extension arm (1480) is connected with the sealing shell (140), and the other end of the extension arm is at least partially inclined towards the direction approaching the push block (141) along the direction away from the sealing shell (140);

the clamping piece (1481) is provided with at least one claw (1482), and the claw (1482) is used for clamping and fixing the optical cable (3) through the avoidance through hole (1410) when the tail sheath (12) is connected with the switching installation part (21).

10. An optical fiber connector as defined in claim 9, wherein:

the clamping piece (1481) comprises a clamping plate (1483), a plurality of clamping jaws (1482) which are arranged at intervals along the axial direction are arranged on the clamping plate (1483), and the clamping plate (1483) is obliquely arranged along the direction away from the sealing shell (140) and the direction away from the avoidance through hole (1410).

11. An optical fiber connector as defined in claim 1, wherein:

one end of each adapter (2) far away from the adapter mounting part (21) is provided with a butt joint part (23); wherein,,

the cross section of the butt joint part (23) is C-shaped; or alternatively, the first and second heat exchangers may be,

the cross section of the butt joint part (23) comprises an arc-shaped section and at least two straight-line sections, and the at least two straight-line sections are positioned on the same side of the arc-shaped section; or alternatively, the first and second heat exchangers may be,

the cross section of the butt joint part (23) is D-shaped; or (b)

The cross section of the butt joint part (23) comprises at least two arc-shaped sections and at least two straight-line sections, and the straight-line sections and the arc-shaped sections are arranged in a staggered mode.

12. An optical fiber connector as defined in claim 4, wherein:

a first sealing ring (1400) for sealing and connecting the sealing shell (140) and the adapter (2) is arranged on the outer side wall of the sealing shell (140);

the plug (13) is sleeved with a dustproof cap, and a second sealing ring (24 a) used for sealing and connecting the adapter (2) and the dustproof cap is arranged between the dustproof cap and the adapter (2).