CN215526182U

CN215526182U - FC type polarization maintaining connector

Info

Publication number: CN215526182U
Application number: CN202122359699.9U
Authority: CN
Inventors: 梁汇
Original assignee: Hengdong Optical Communication Technology Shenzhen Co ltd
Current assignee: Heng Dongguang Communication Technology Shenzhen Co ltd
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-01-14
Anticipated expiration: 2031-09-27

Abstract

The utility model relates to a FC type polarization maintaining connector belongs to optical communication technical field, and it includes ferrule assembly, angle fixer and afterbody, ferrule assembly's one end is equipped with the constant head tank, angle fixer be equipped with along the axial through the fixed orifices and the inboard be equipped with constant head tank complex navigation key, the internal vacant chamber that is equipped with of afterbody, angle fixer place in the vacant intracavity, the afterbody is kept away from one side of ferrule assembly is equipped with the injecting glue hole, makes the afterbody restriction the angle fixer motion, ferrule assembly angle fixer with the afterbody link up the fiber channel that forms the confession optic fibre and pass through. The application has the effect of unchanged reliability when influenced by external factors.

Description

FC type polarization maintaining connector

Technical Field

The application relates to the technical field of optical communication, in particular to an FC type polarization maintaining connector.

Background

The polarization maintaining connector is a connector for special application, and is applied to optical sensing systems for measuring temperature, magnetic field, pressure, acceleration and the like. In an interference type optical fiber sensor based on optical coherence detection, a polarization maintaining optical fiber connector is used to ensure that the polarization direction of a linear optical signal is unchanged, namely, the extinction ratio is improved, and high-precision measurement of physical quantity can be realized.

At present, the FC type polarization maintaining connector is externally arranged and is easily interfered by the outside, so that the device is not firmly fixed or is changed, the reliability is reduced, the polarization angle is changed, the ER value of a product is directly influenced, and the signal attenuation is caused.

The related art described above has a drawback that the reliability of the device can be reduced due to the influence of external factors.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem that the reliability of a device can be reduced due to the influence of external factors, the application provides an FC type polarization-maintaining connector.

The application provides a FC type polarization maintaining connector adopts following technical scheme:

the utility model provides a FC type polarization maintaining connector, includes lock pin subassembly, angle fixer and afterbody, the one end of lock pin subassembly is equipped with the constant head tank, the angle fixer be equipped with along the axial through fixed orifices and inboard be equipped with constant head tank complex navigation key, the internal vacant chamber that is equipped with of afterbody, the angle fixer place in vacant intracavity, the afterbody is kept away from one side of lock pin subassembly is equipped with the injecting glue hole, makes the afterbody restriction the motion of angle fixer, the lock pin subassembly the angle fixer with the afterbody link up and form the fiber channel who supplies optic fibre to pass through.

Through adopting above-mentioned technical scheme, lock pin subassembly accessible keyway structure slides in the angle fixing ware, places the afterbody in the angle fixing ware in, and after the angle modulation, fix angle fixing ware and afterbody through injecting glue hole injecting glue to the keyway structure has restricted lock pin subassembly and has rotated, and the angle fixing ware is built-in to make the device more firm, has guaranteed that the performance of connector is more reliable and more stable, makes the reliability performance unchangeable when receiving external factor influence.

Optionally, one end of the angle fixer, which is close to the ferrule assembly, is provided with a protruding blocking part, and the other end is provided with a fixing part; the vacant cavity comprises a front cavity for placing the blocking part and a rear cavity for placing the fixing part.

Through adopting above-mentioned technical scheme, the internal cavity that has corresponding angle fixer shape of afterbody, the stop part is used for blockking that the angle fixer removes backward, restricts the angle fixer in leading chamber, makes the angle fixer place in the afterbody steadily.

Optionally, one end of the angle fixer, which is close to the fixing part, is provided with an adjusting groove.

Through adopting above-mentioned technical scheme, when angle adjustment, use the joint of adjusting equipment in the adjustment tank and make it rotate to quick convenient angle adjustment.

Optionally, the ferrule assembly includes a ferrule and a tail handle, the positioning groove is disposed at one end of the tail handle far away from the ferrule, the ferrule assembly is slidably connected to the angle fixer through the positioning groove, a butt joint hole is axially disposed at one end of the tail handle far away from the positioning groove, and the ferrule is fixed in the butt joint hole in an inserting manner.

Through adopting above-mentioned technical scheme, the lock pin subassembly can slide in the angle fixing ware, has made things convenient for the butt joint of device, and the lock pin is connected in the caudal peduncle through the butt joint hole, is convenient for spacing and the installation to the lock pin.

Optionally, the angle fixer further comprises a spring, the spring is sleeved on the tail handle, a limiting portion is arranged at one end, close to the inserting core, of the tail handle, one end of the spring abuts against the limiting portion, and the other end of the spring abuts against the angle fixer.

Through adopting above-mentioned technical scheme, the spring plays the reset effect, makes the lock pin subassembly can not retract inside the casing when the device butt joint is used for can be smooth and easy carry out the butt joint.

Optionally, the front body is provided with an annular flange on the inner side, the annular flange divides the front body into a front chamber and a rear chamber, the ferrule assembly passes through the annular flange to place the ferrule in the front chamber, and the limiting part abuts against the annular flange and is placed in the rear chamber.

Through adopting above-mentioned technical scheme, the spacing portion of annular flange restriction has got into leading cavity in, makes the caudal peduncle can only slide in the rearmounted cavity.

Optionally, one end of the rear body, which is close to the ferrule assembly, is provided with an external thread, the rear chamber is provided with an internal thread matched with the external thread, and the front body is in threaded connection with the rear body.

By adopting the technical scheme, the front body and the rear body are connected by the internal and external threads, so that the installation is smooth.

Optionally, the device further comprises a screwing ring, and an annular limiting key is arranged on the inner side of one end, close to the rear body, of the screwing ring; the outer side of the front body is provided with a first limiting flange, the outer side of the rear body is provided with a second limiting flange, and the limiting key sleeve is arranged between the first limiting flange and the second limiting flange.

By adopting the technical scheme, the two limiting flanges limit the sliding of the limiting key between the front body and the rear body, and prevent the screwing ring from being separated from the connector.

Optionally, still include the tail cover, the tail cover is equipped with the tail cover hole that supplies the optical cable to pass through along the axial, the tail cover includes the installation department and the guide part of body coupling, the installation department cup joint in the afterbody is close to one side in notes gluey hole, the guide part is made by rubber, makes the crooked optical cable of guide part protection.

Through adopting above-mentioned technical scheme, the installation department is connected afterbody and tail cover, and the guide part provides the bending protection effect of optic fibre.

Optionally, the rear body is far away from one end of the ferrule assembly and is provided with a sleeve joint part matched with the installation part, and the periphery of the sleeve joint part is provided with a plurality of annular grooves.

By adopting the technical scheme, the sleeving part is convenient to be connected with the tail sleeve, the annular groove increases the friction force of the sleeving part, and the sleeving part is more stable after sleeving.

In summary, the present application includes at least one of the following beneficial technical effects:

the angle fixer is arranged in the rear body, and after the angle is adjusted, the angle fixer and the rear body are fixed by injecting glue, so that the device is more stable, and the reliability of the connector is guaranteed to be unchanged when the connector is influenced by external factors;

the inserting core assembly slides in the angle fixing ring through the matching of the key groove structures;

the angle adjusting device has the advantages that the angle adjusting device can adjust the angle quickly and conveniently through the adjusting groove in the fixing part of the angle fixer.

Drawings

Fig. 1 is an overall structural view of an embodiment of the present application.

Fig. 2 is a sectional view of the entire structure of the embodiment of the present application.

Fig. 3 is an exploded view of the overall structure of an embodiment of the present application.

Fig. 4 is a cross-sectional view of a precursor of an embodiment of the present application.

Fig. 5 is a cross-sectional view of a rear body of an embodiment of the present application.

Description of reference numerals: 1. a ferrule assembly; 11. inserting a core; 12. a tail handle; 121. positioning a groove; 122. a butt joint hole; 123. a limiting part; 2. an angle fixer; 21. a fixing hole; 22. a positioning key; 23. a blocking portion; 24. a fixed part; 241. an adjustment groove; 3. a spring; 4. a precursor; 41. an annular flange; 42. a pre-chamber; 43. a rear chamber; 431. an internal thread; 44. a first stop flange; 5. a rear body; 51. a vacant cavity; 511. a front cavity; 512. a rear cavity; 52. a socket joint part; 521. injecting glue holes; 522. an annular groove; 53. an external thread; 54. a second position-defining flange; 6. screwing the ring; 61. a limiting key; 7. a tail sleeve; 71. a tail sleeve hole; 72. an installation part; 73. a guide portion.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The embodiment of the application discloses FC type polarization maintaining connector. Referring to fig. 1 and 3, an FC type polarization maintaining connector includes a ferrule assembly 1, an angle fixer 2, a front body 4, a rear body 5, a screwing ring 6 and a tail sleeve 7, the ferrule assembly 1 is slidably connected to the angle fixer 2, the angle fixer 2 is fixed in the rear body 5, so that the angle fixer 2 is built in and the rear body 5 limits the movement of the angle fixer 2, thereby keeping the reliability of the FC type polarization maintaining connector unchanged when influenced by external factors; one end of the rear body 5 is screwed with the front body 4, so that a cavity capable of placing the device is formed in the front body 4 and the rear body 5; the other end of the rear body 5 is sleeved with a tail sleeve 7, and the tail sleeve 7 is used for placing and protecting an optical cable; the screwing ring 6 is sleeved between the front body 4 and the rear body 5 and is used for connecting with butt joint equipment; the ferrule assembly 1, the angle fixer 2, the front body 4, the rear body 5 and the tail sleeve 7 are communicated to form a fiber channel for the optical fiber to pass through.

Referring to fig. 2 and 3, the ferrule assembly 1 includes a ferrule 11 and a tail handle 12, a butt hole 122 is axially disposed at one end of the tail handle 12 close to the ferrule 11, and the ferrule 11 is inserted and fixed in the butt hole 122 for ensuring that the angle setting of optical fiber transmission is more stable.

The periphery of one end of the tail handle 12, which is far away from the butt joint hole 122, is provided with positioning grooves 121 which are parallel to the axial direction and are symmetrical up and down, so that the tail handle can be connected with the angle fixer 2 in a sliding manner; one end of the tail handle 12 near the ferrule 11 is provided with a stop 123 so that the tail handle 12 can be restrained within the front body 4.

The angle fixer 2 is provided with a fixing hole 21 for the optical fiber to pass through along the axial direction, and the inner side of the angle fixer is provided with a positioning key 22 matched with the positioning groove 121, so that the ferrule assembly 1 can slide in the angle fixer 2 through the matching of the positioning groove 121 and the positioning key 22; one end of the angle fixer 2 close to the ferrule assembly 1 is provided with a blocking part 23 which can block the angle fixer 2 from moving backwards; a fixing part 24 is arranged at one end of the angle fixer 2, which is far away from the ferrule assembly 1, after the angle is adjusted, the angle fixer 2 is fixed with the rear body 5 by injecting glue on the angle fixer, so that the movement of the angle fixer 2 in the rear body 5 is limited; the one end that the fixed part 24 kept away from the stop part 23 is equipped with the adjustment tank 241, when angle regulation, uses the regulation to equip the joint in adjustment tank 241 and makes it rotate to quick convenient angle regulation.

In order to enable the ferrule assembly 1 to reset and smoothly butt the optical fiber when sliding in the angle fixer 2, the tail handle 12 is provided with a spring 3, one end of the spring 3 abuts against the limiting part 123, and the other end abuts against the angle fixer 2; when the butt joint is carried out, the inserting core assembly 1 slides towards the inside of the angle fixer 2 under the action of external force, the spring 3 is compressed to generate elastic force opposite to the direction of the external force, and when the external force is removed, the inserting core assembly 1 resets under the action of the elastic force, so that the inserting core assembly 1 is limited to be retracted into the FC type polarization-maintaining connector.

Referring to fig. 3 and 4, the inner side of the front body 4 is provided with an annular flange 41, the annular flange 41 divides the front body 4 into a front chamber 42 and a rear chamber 43, the ferrule assembly 1 passes through the annular flange 41 to place the ferrule 11 in the front chamber 42, and the limiting part 123 abuts against the annular flange 41 and is placed in the rear chamber 43, so that the annular flange 41 limits the limiting part 123 from entering the front chamber 42, and the tail handle 12 can only slide in the rear chamber 43; the rear chamber 43 is provided with an internal thread 431 on a side thereof adjacent to the rear body 5 for engaging with the rear body 5 to be screwed so that the front body 4 and the rear body 5 are coupled together. The front body 4 is provided with a first stop flange 44 on the outer side close to the annular flange 41, which limits the screwing ring 6 from sliding forward.

Referring to fig. 3 and 5, the outer side of one end of the back body 5 close to the ferrule assembly 1 is provided with an external thread 53 matching with the internal thread 431 of the front body 4, so that the front body 4 is screwed to the back body 5.

Referring to fig. 2 and 5, a through empty cavity 51 is axially formed in the rear body 5, and the empty cavity 51 includes a front cavity 511 for placing the blocking portion 23 and a rear cavity 512 for placing the fixing portion 24, so that the angle fixing device 2 is more stably placed in the empty cavity 51.

One side that afterbody 5 is close to tail cover 7 is equipped with injecting glue hole 521 for quick injecting glue behind the angle regulation is with afterbody 5 and the angle fixer 2 fixed connection of the inside, makes the device more firm. One side of the rear body 5 close to the glue injection hole 521 is provided with a sleeve joint part 52 which is used for connecting with the tail sleeve 7; the outer side of one end of the rear body 5 close to the sleeve joint part 52 is provided with a second limit flange 54 for limiting the backward sliding of the screwing ring 6.

Referring to fig. 2 and 3, an annular limiting key 61 is arranged at one end, close to the rear body 5, of the screwing ring 6 for threaded connection with the equipment, and the limiting key 61 is sleeved between the first limiting flange 44 and the second limiting flange 54, so that the screwing ring 6 is limited from sliding forwards and backwards.

Referring to fig. 2 and 3, a jacket hole 71 for passing the optical fiber is axially formed inside the jacket 7; a mounting part 72 is arranged at one end of the tail sleeve 7 close to the rear body 5, the mounting part 72 is sleeved on the sleeving part 52 of the rear body 5, and the edge of the mounting part 72 abuts against the second limiting flange 54, so that the mounting part 72 cannot move forwards continuously; the periphery of the sleeve joint part 52 of the rear body 5 is provided with a plurality of annular grooves 522 for increasing the friction force between the sleeve joint part 52 and the installation part 72, so that the rear body 5 and the tail sleeve 7 are connected more stably; one end of the tail sleeve 7, which is far away from the installation part 72, is provided with a guide part 73, the guide part 73 can be bent and made of rubber, the guide part 73 is driven to be bent when the optical cable is bent, and the guide part 73 cannot be bent continuously when being bent to a certain degree, so that the optical cable is prevented from being bent excessively, and the optical cable is protected in a bending manner.

The implementation principle of the FC type polarization maintaining connector in the embodiment of the present application is as follows: insert core assembly 1 slides through the keyway structure and connects in angle fixer 2, place afterbody 5 in angle fixer 2 in, through rotatory adjustment tank 241 or lock pin 11 with angle modulation back, it is fixed with angle fixer 2 and afterbody 5 to inject glue hole 521 injecting glue, thereby the keyway structure has restricted insert core assembly 1 and has rotated, angle fixer 2's built-in messenger device is more firm, guaranteed FC type polarization maintaining connector's performance more reliable and more stable when receiving external influence.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. An FC-type polarization maintaining connector, characterized in that: including lock pin subassembly (1), angle fixer (2) and afterbody (5), the one end of lock pin subassembly (1) is equipped with constant head tank (121), angle fixer (2) be equipped with along axial through fixed orifices (21) and the inboard be equipped with constant head tank (121) complex navigation key (22), be equipped with vacant chamber (51) in afterbody (5), place in angle fixer (2) in vacant chamber (51), one side that afterbody (5) kept away from lock pin subassembly (1) is equipped with injection hole (521), makes afterbody (5) restriction angle fixer (2) motion, lock pin subassembly (1) angle fixer (2) with afterbody (5) link up and form the fiber channel that supplies optic fibre to pass through.

2. A polarization maintaining connector of the FC type according to claim 1, wherein: one end of the angle fixer (2) close to the ferrule assembly (1) is provided with a convex blocking part (23), and the other end is provided with a fixing part (24); the empty cavity (51) comprises a front cavity (511) for placing the blocking part (23) and a rear cavity (512) for placing the fixing part (24).

3. A polarization maintaining connector of the FC type according to claim 2, wherein: one end of the angle fixer (2) close to the fixing part (24) is provided with an adjusting groove (241).

4. A polarization maintaining connector of the FC type according to claim 1, wherein: the ferrule assembly (1) comprises a ferrule (11) and a tail handle (12), the positioning groove (121) is formed in the tail handle (12) and is far away from one end of the ferrule (11), the ferrule assembly (1) is connected to the angle fixer (2) in a sliding mode through the positioning groove (121), the tail handle (12) is far away from one end of the positioning groove (121) and is provided with a butt joint hole (122) along the axial direction, and the ferrule (11) is fixedly spliced in the butt joint hole (122).

5. An FC-type polarization maintaining connector as recited in claim 4, wherein: still include spring (3), spring (3) cover is located caudal peduncle (12), caudal peduncle (12) are close to the one end of lock pin (11) is equipped with spacing portion (123), the one end butt of spring (3) in spacing portion (123), the other end butt in angle fixer (2).

6. An FC-type polarization maintaining connector as recited in claim 5, wherein: the front body (4) is further included, an annular flange (41) is arranged on the inner side of the front body (4), the annular flange (41) divides the front body (4) into a front chamber (42) and a rear chamber (43), the ferrule assembly (1) penetrates through the annular flange (41) to place the ferrule (11) in the front chamber (42), and the limiting part (123) abuts against the annular flange (41) and is placed in the rear chamber (43).

7. An FC-type polarization maintaining connector as recited in claim 6, wherein: the rear body (5) is provided with an external thread (53) at one end close to the ferrule assembly (1), the rear chamber (43) is provided with an internal thread (431) matched with the external thread (53), and the front body (4) is in threaded connection with the rear body (5).

8. An FC type polarization maintaining connector according to claim 7, wherein: the rear body structure is characterized by further comprising a screwing ring (6), wherein an annular limiting key (61) is arranged on the inner side of one end, close to the rear body (5), of the screwing ring (6); the outer side of the front body (4) is provided with a first limiting flange (44), the outer side of the rear body (5) is provided with a second limiting flange (54), and the limiting key (61) is sleeved between the first limiting flange (44) and the second limiting flange (54).

9. A polarization maintaining connector of the FC type according to claim 1, wherein: still include tail cover (7), tail cover (7) are equipped with tail cover hole (71) that supply the optical cable to pass through along the axial, tail cover (7) are including installation department (72) and guide part (73) of body coupling, installation department (72) cup joint in afterbody (5) are close to one side of annotating gluey hole (521), guide part (73) are made by rubber, make guide part (73) protection crooked optical cable.

10. A polarization maintaining connector of the FC type according to claim 9, wherein: the rear body (5) is far away from one end of the ferrule assembly (1) and is provided with a sleeve joint part (52) matched with the installation part (72), and the periphery of the sleeve joint part (52) is provided with a plurality of annular grooves (522).