CN217133418U

CN217133418U - Optical fiber connector and optical fiber connector thereof

Info

Publication number: CN217133418U
Application number: CN202122779219.4U
Authority: CN
Inventors: 吴平海
Original assignee: Ningbo Changji Photoconductive Sensing Technology Co ltd
Current assignee: Ningbo Changji Photoconductive Sensing Technology Co ltd
Priority date: 2021-11-12
Filing date: 2021-11-12
Publication date: 2022-08-05
Anticipated expiration: 2031-11-12

Abstract

The utility model discloses an optical fiber connector and fiber connector thereof, fiber connector is including connecting the base member, first adapter sleeve with set up in the lock pin of connecting a base member tip, first adapter sleeve overlaps on connecting the base member, be provided with first spacing body on the interior pore wall of first adapter sleeve, be provided with on the outer wall of connection base member with the spacing second of first spacing body cooperation spacing body, the one end of connecting the base member is connected with the second adapter sleeve, and first spacing body is spacing between the terminal surface of the spacing body of second and the connection base member other end, be provided with the fiber positioning hole that is used for the optic fibre location in the lock pin, dock through the intermediate junction body between two fiber connector. The structure of the optical fiber connector butt joint device utilizes two optical fiber connectors to carry out threaded connection after butt joint, so that connection is reliable, looseness in the using process is avoided, poor contact is caused, particularly, the optical fiber connector is frequently plugged in and pulled out from an operation area, and meanwhile, the optical fiber connector butt joint device is small in size.

Description

Optical fiber connector and optical fiber connector thereof

Technical Field

The utility model belongs to the technical field of an optic fibre butt-joint structural technique and specifically relates to an optical fiber connector and fiber connector thereof.

Background

Fiber optic connectors are used in fiber optic communication systems to make connections between fiber optic cables, between fiber optic cables and optoelectronic components, and between optoelectronic components. The end faces of two optical fibers to be connected are precisely butted together, so that the light energy output by the transmitting optical fiber can be coupled into the receiving optical fiber to the maximum extent.

The optical fiber connector that adopts at present generally adopts the butt joint structure, utilizes the degree of fit of plug and socket of own to accomplish the butt joint of optical fiber connector, however this connected mode lies in optical fiber connection after, connect insecure, easy not hard up, especially in the operation field that often needs plug optical fiber connector, the condition of contact failure takes place easily, still exists the component around the lock pin simultaneously and is the plastic component to the easy deformation of structure is ageing to cause the optic fibre decay phenomenon under high temperature.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the not enough optical fiber connector and the fiber connector who designs of above-mentioned technique, its concrete structure as follows.

The utility model discloses an optical fiber connector, including connecting the base member, first adapter sleeve with set up in the lock pin of connecting a base member tip, first adapter sleeve overlaps on connecting the base member, is provided with first spacing body on the interior pore wall of first adapter sleeve, be provided with on the outer wall of connecting the base member with the spacing body of the spacing second of first spacing body cooperation, the one end of connecting the base member is connected with the second adapter sleeve, and first spacing body is spacing between the terminal surface of the spacing body of second and the connection base member other end, is provided with the optic fibre locating hole that is used for the optic fibre location in the lock pin.

Preferably, a third stopper is provided at one end of the connection base.

Preferably, the connection base body comprises a first sleeve body and a second sleeve body sleeved on the first sleeve body, the insertion core is inserted into the end portion of the first sleeve body, a third limiting body is arranged at the end portion of the second sleeve body, a second limiting body is arranged on the outer wall of the second sleeve body, a fourth limiting body is arranged on the first sleeve body, the fourth limiting body is abutted to the end face of the second sleeve body, and the second sleeve body is connected with the second sleeve body.

Preferably, the outer wall of the second connecting sleeve is provided with a fifth limiting body, the second connecting sleeve (13) is sleeved on the second sleeve body, and the end face of the second connecting sleeve is in contact with the fifth limiting body for limiting.

Preferably, the first connecting sleeve comprises a screwing part, the outer wall of the screwing part is of a hexagonal structure, and an internal thread is arranged on the inner wall of the first connecting sleeve.

Preferably, the second connecting sleeve is sleeved with a soft sleeve.

As another aspect, an optical fiber connector includes two optical fiber connectors as described above and an intermediate connector for butting the two optical fiber connectors against each other, the intermediate connector including a butting passage, one end of a connection base body of one optical fiber connector and a ferrule being inserted into one end of the butting passage, and a first connection sleeve of one optical fiber connector being fitted over one end of the intermediate connector; the other end of the connecting base body of the other optical fiber connector and the inserting core are inserted into one end of the butt joint channel, and the first connecting sleeve of the other optical fiber connector is sleeved on the other end of the middle connecting body and then is in threaded connection; wherein, the end parts of the inserting cores of the two optical fiber connectors are mutually abutted.

Preferably, the two ends of the intermediate connector are respectively provided with a sixth limiting body, the two sixth limiting bodies are respectively matched with the third limiting bodies of the two optical fiber connectors for limitation, the end face of the intermediate connector is abutted to the seventh limiting body on the connecting base body, the third limiting body comprises a protrusion, the sixth limiting body comprises a limiting groove, or the third limiting body comprises a limiting groove, the sixth limiting body comprises a protrusion, and the protrusion is correspondingly inserted into the limiting groove for limitation.

Preferably, the two ends of the butt joint channel are respectively provided with a first limiting step and a second limiting step, and the second limiting step is abutted and limited with one end face of the connecting base body.

Preferably, at least one of the two ends of the butt joint channel is provided with an annular recess, an elastic sleeve is arranged in the butt joint channel, a limiting sleeve is arranged in the annular recess, the elastic sleeve is limited between two first limiting steps in the butt joint channel, the inner side end face of the limiting sleeve forms a first limiting step, the outer side end face of the limiting sleeve forms a second limiting step, and the inserting core is arranged in the elastic sleeve. The elastic sleeve comprises a ceramic elastic sleeve and a metal elastic sleeve, which are collectively called as elastic sleeves or elastic sleeve bodies, and is used for tightly connecting the joints.

The utility model relates to an optical fiber connector, the structure of which utilizes two optical fiber connectors to carry out butt joint and then carries out threaded connection, so that the connection is reliable, the looseness in the use process is avoided, the contact failure is avoided, especially the operation area of the optical fiber connector is often required to be plugged and unplugged, and the volume is small; the miniature (small volume) can be installed and used in high density, and can be used for connecting internal optical paths of miniature spectrometers and other laser industrial miniature equipment.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an optical fiber connector;

FIG. 2 is an exploded view of an optical fiber connector;

FIG. 3 is an exploded view of an optical fiber connector;

FIG. 4 is a schematic diagram of the overall structure of another optical fiber connector;

FIG. 5 is an exploded view (one) of another fiber optic connector;

FIG. 6 is an enlarged view of another fiber optic connector;

fig. 7 is an exploded view of another fiber optic connector.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments of the present invention belong to the present invention

The scope of novel protection.

Example 1:

as shown in the drawings, an optical fiber connector 1 described in this embodiment includes a connecting base 11, a first connecting sleeve 12, and a ferrule 14 disposed at one end of the connecting base 11, the first connecting sleeve 12 is sleeved on the connecting base 11, a first position-limiting body 121 is disposed on an inner hole wall of the first connecting sleeve 12, a second position-limiting body 112 that is matched with the first position-limiting body 121 for position-limiting is disposed on an outer wall of the connecting base 11, one end of the connecting base 11 is connected with a second connecting sleeve 13 through a thread, the first position-limiting body 121 is limited between the second position-limiting body 112 and an end face of the other end of the connecting base 11, and a fiber positioning hole 141 for positioning an optical fiber is disposed in the ferrule 14; the optical fiber penetrates through the through hole 111 in the connection base body 11 and then is inserted into and positioned in the optical fiber positioning hole 141, the first limiting body and the second limiting body 112 are both in an annular step structure, the ferrule 14 can be inserted into the through hole 111 of the connection base body 11, the ferrule 14 is a metal ferrule, and the metal ferrule and the connection base body 11 form a metal component of an integral structure.

Preferably, one end of the connection base 11 is provided with a third limiting body 116 configured to limit the insertion of the ferrule 14 into the intermediate connection body 2

Preferably, the first connection sleeve 12 comprises a tightening portion 125, the tightening portion 125 is of a hexagonal structure, an internal thread 122 is arranged on the inner wall of the first connection sleeve 12, and the structure of the internal thread is convenient for being connected with the end of the intermediate connection body 2 in a threaded manner, so that the use performance is improved.

Further, the second connecting sleeve 13 is sleeved with the soft sleeve 5, the second connecting sleeve 13 can be smooth on the outer wall, the latch 132 can also be arranged on the outer wall of the second connecting sleeve 13, the latch 132 is utilized to enable the connection between the second connecting sleeve 13 and the soft sleeve 5 to be more reliable, the soft sleeve 5 adopts a rubber sleeve or a silica gel sleeve, and the arrangement of the soft sleeve 5 enhances the strength of the optical fiber at the connecting sleeve position, so that the excessive bending phenomenon is avoided.

Based on the above, the diameter of the optical fiber core in the ferrule can be any one of 9um, 25um, 50um, 100um, 200um, 300um, 400um and 600um, and the formed connector is suitable for the fields of biochemical analysis/sensing, medical laser, dental curing, spectral analysis, plasma analysis, optical energy therapy, industrial laser system and the like. Designing product characteristics: the device is miniaturized (small in volume) and can be installed and used at high density; can be used for a miniaturized spectrometer and other laser industries; the optical path inside the miniaturized equipment is used in a connected mode, the base body 11, the first connecting sleeve 12 and the second connecting sleeve 13 are all metal components, and the technical problem that optical fibers are attenuated due to the fact that structural components are prone to deformation and aging at high temperature is solved.

Example 2:

the optical fiber connector 1 described in this embodiment has a structure substantially the same as that of embodiment 1, but is different from embodiment 1 in that the connection substrate 11 includes a first sleeve 119 and a second sleeve 120 sleeved on the first sleeve 119, the ferrule 14 is inserted into an end of the first sleeve 119, a third position-limiting body 116 is disposed at an end of the second sleeve 120, a second position-limiting body 112 is disposed on an outer wall of the second sleeve 120, a fourth position-limiting body 123 is disposed on the first sleeve 119, the fourth position-limiting body 123 abuts against an end surface of the second sleeve 120, and the second sleeve 120 is in threaded connection with the second connection sleeve 13; the fourth position limiting body 123 is also an annular step, and is configured according to the requirements of the use scene. Wherein, the core insert adopts a ceramic core insert.

Further, the outer wall of the second connecting sleeve 13 is provided with a fifth limiting body 131, the second connecting sleeve (13) is sleeved on the second sleeve body, and the end face of the second connecting sleeve 13 is in contact with the fifth limiting body for limiting. The fifth limiting body 131 may be a step surface, and the end surface of the soft sleeve 5 and the end surface of the second connecting sleeve 13 are both abutted against the step surface, or may also be a clamping groove, and the clamping spring 15 is clamped in the clamping groove, so that the end surface of the soft sleeve 5 and the end surface of the second connecting sleeve 13 are both abutted against the clamping spring 15, and the soft sleeve and the second connecting sleeve 13 are limited after being connected.

Preferably, the first connection sleeve 12 includes a tightening part 125 having a hexagonal structure at the rear end of the first position-limiting body 121, and the outer wall of the extension sleeve 124 is larger than the front end 133 of the second connection sleeve 13, so that after the first connection sleeve 12 is displaced towards the second connection sleeve 13, the extension sleeve 124 is sleeved on the front end 133 of the second connection sleeve 13, and the extension sleeve 124 can be guided to move on the front end 133 of the second connection sleeve 13, thereby facilitating the threaded connection between the first connection sleeve 12 and the intermediate connection body 2, and facilitating the use. Therefore, when the first connection sleeve is connected to the intermediate connection body 2 of the optical fiber connector, a movable space is formed between the rear end of the first position-limiting body 121 and the end of the second connection sleeve.

Based on the above, the diameter of the optical fiber core in the ferrule can be any one of 9um, 25um, 50um, 65.2um, 100um and 200um, and the formed connector is suitable for telecommunication and mobile communication; a data transmission network; electrical power; a railway mine; exploiting the sea field; carrying out spectral analysis; industrial intelligent systems, etc. The first sleeve 119, the second sleeve 120, the first connecting sleeve 12 and the second connecting sleeve 13 are all metal members, and the technical problem that optical fibers are attenuated due to the fact that structural members are prone to deformation and aging at high temperature is solved.

Example 3:

the optical fiber connector described in this embodiment includes two optical fiber connectors 1 as described in embodiment 1 or embodiment 2 and an intermediate connector 2 for butting the two optical fiber connectors 1 against each other, where the intermediate connector 2 includes a butting channel 20, one end of a connection base 11 and a ferrule 14 of one optical fiber connector 1 are inserted into one end of the butting channel 20, and a first connection sleeve 12 of one optical fiber connector 1 is sleeved on one end of the intermediate connector 2; the other end of the connection base body 11 and the ferrule 14 of the other optical fiber connector 1 are inserted into one end of the butt joint channel 20, and the first connecting sleeve 12 of the other optical fiber connector 1 is in threaded connection with the other end of the intermediate connector 2; wherein, the mutual butt of the 14 tip of lock pin of two fiber connector 1 to optic fibre on two lock pins 14 contacts and carries out the data interaction transmission, and first connecting sleeve 12 carries out threaded connection with intermediate connector 2 and makes to be connected reliable and stable, has avoided not hard up phenomenon, and intermediate connector 2's middle part is provided with annular arch 23, and its annular arch 23 realizes carrying on spacingly after connecting first connecting sleeve 12.

In this embodiment, the two ends of the intermediate connector 2 are respectively provided with a sixth position-limiting body 114, the two sixth position-limiting bodies 114 are respectively matched with the third position-limiting bodies 116 of the two optical fiber connectors 1 for limitation, the end surface of the intermediate connector 2 abuts against the seventh position-limiting body 113 on the connection base 11, the third position-limiting body 116 includes a protrusion 118, the sixth position-limiting body 114 includes a position-limiting groove 115, or the third position-limiting body 116 includes a position-limiting groove 115, the sixth position-limiting body 114 includes a protrusion 118, and the protrusion 118 is correspondingly inserted into the position-limiting groove 115 for limitation. Preferably, the third position-limiting body 116 may be a fixing hole 117 formed in one end of the connecting base 11, a fixing cylinder fixed in the fixing hole 117 in an interference fit manner to form a protrusion 118, and a recess formed in the end of the intermediate connecting body 2; or the third position-limiting body 116 may also be an insert formed by extending the end surface of the first sleeve 119; in the connecting head of embodiment 2, the seventh position-limiting body 113 is an end surface of the second sleeve 120 contacting with the fourth position-limiting body 123.

In this embodiment, the two ends of the docking channel 20 are respectively provided with a first limiting step 21 and a second limiting step 22, the second limiting step 22 is abutted against and limited by one end surface of the connection base 11, and the structure of the docking channel is used for limiting the end surface of the connection base 11.

Furthermore, at least one of the two ends of the docking channel 20 is provided with an annular recess 24, the annular recess 24 may be at one end of the docking channel 20, or may be at the two ends of the docking channel 20, the elastic sleeve 3 is embedded in the docking channel 20, the annular recess 24 is internally provided with a limit sleeve 4 in threaded connection, so that the elastic sleeve 3 is limited between the two first limit steps 21 in the docking channel 20, the inner side end surface of the limit sleeve 4 forms the first limit step 21, the outer side end surface of the limit sleeve 4 forms the second limit step 22, and the ferrule 14 is placed in the elastic sleeve 3; the structural arrangement is such that the elastic sleeve 3 is mounted inside the docking channel 20.

The connector and the intermediate connector 2 are made of metal materials, and the technical problem that the optical fiber is attenuated due to the fact that a structural member is easy to deform and age at high temperature in a use environment is solved.

The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, fall within the protection scope of the present invention.

Claims

1. The utility model provides an optical fiber connector, a serial communication port, including connecting base member (11), first connecting sleeve (12) and setting up in lock pin (14) of connecting base member (11) a tip, first connecting sleeve (12) cover is on connecting base member (11), be provided with first spacing body (121) on the inner hole wall of first connecting sleeve (12), be provided with on the outer wall of connecting base member (11) with first spacing body (121) cooperation spacing second spacing body (112), the one end of connecting base member (11) is connected with second connecting sleeve (13), and first spacing body (121) are spacing between the terminal surface of second spacing body (112) and connecting base member (11) other end, be provided with in lock pin (14) and be used for the optic fibre locating hole (141) of optic fibre location.

2. An optical fiber connector according to claim 1, wherein a third stopper (116) is provided at one end of the connection base (11).

3. The optical fiber connector according to claim 2, wherein the connection substrate (11) includes a first sleeve body (119) and a second sleeve body (120) sleeved on the first sleeve body (119), the ferrule (14) is inserted into an end of the first sleeve body (119), the third position-limiting body (116) is disposed on an end of the second sleeve body (120), the second position-limiting body (112) is disposed on an outer wall of the second sleeve body (120), the first sleeve body (119) is provided with a fourth position-limiting body (123), the fourth position-limiting body (123) abuts against an end surface of the second sleeve body (120), and the second sleeve body (120) is connected with the second connection sleeve (13).

4. An optical fiber connector (1) according to claim 3, wherein the outer wall of the second sleeve body (120) is provided with a fifth limiting body (131), the second connecting sleeve (13) is sleeved on the second sleeve body (120), and the end surface of the second connecting sleeve (13) contacts with the fifth limiting body (131) for limiting.

5. An optical fibre connector as claimed in any one of claims 1 to 4, wherein the first coupling sleeve (12) includes a tightening portion (125), the outer wall of the tightening portion (125) being of hexagonal configuration and the inner wall of the first coupling sleeve (12) being provided with internal screw threads (122).

6. An optical fibre connector according to any one of claims 1 to 4, wherein the second connecting sleeve (13) is sleeved with a flexible sleeve (5).

7. An optical fiber connector comprising two optical fiber connectors (1) according to any one of claims 1 to 6 and an intermediate connector (2) for abutting the two optical fiber connectors (1) to each other, wherein the intermediate connector (2) comprises an abutting passage (20), one end of a connection base (11) and a ferrule (14) of one optical fiber connector (1) are inserted into one end of the abutting passage (20), and a first connection sleeve (12) of one optical fiber connector (1) is sleeved on one end of the intermediate connector (2); the other end of the connecting base body (11) of the other optical fiber connector (1) and the inserting core (14) are inserted into one end of the butt joint channel (20), and the first connecting sleeve (12) of the other optical fiber connector (1) is sleeved on the other end of the intermediate connector (2) and then is in threaded connection; wherein, the end parts of the inserting cores (14) of the two optical fiber connectors (1) are mutually abutted.

8. An optical fiber connector according to claim 7, wherein the intermediate connector (2) is provided at both ends thereof with sixth position-limiting bodies (114), the sixth position-limiting bodies (114) are respectively matched with the third position-limiting bodies (116) of the two optical fiber connectors (1) for limiting, the end surface of the intermediate connector (2) is abutted against the seventh position-limiting body (113) on the connecting base body (11), and the seventh position-limiting body

The three limiting bodies (116) comprise protrusions (118), the sixth limiting body (114) comprises a limiting groove (115), or the third limiting body (116) comprises a limiting groove (115), the sixth limiting body (114) comprises protrusions (118), and the protrusions (118) are correspondingly inserted into the limiting groove (115) for limiting.

9. An optical fiber connector according to claim 7, wherein the two ends of the butt-joint channel (20) are respectively provided with a first limit step (21) and a second limit step (22), and the second limit step (22) is abutted against and limited by one end face of the connecting base body (11).

10. The optical fiber connector according to claim 9, wherein at least one of two ends of the butt joint channel (20) is provided with an annular recess (24), the elastic sleeve (3) is embedded in the butt joint channel (20), the limiting sleeve (4) is arranged in the annular recess (24), the elastic sleeve (3) is limited between two first limiting steps (21) in the butt joint channel (20), the inner side end surface of the limiting sleeve (4) forms the first limiting step (21), the outer side end surface of the limiting sleeve (4) forms the second limiting step (22), and the ferrule (14) is arranged in the elastic sleeve (3).