CN114019614B

CN114019614B - Outdoor optical fiber connector and optical fiber adapter

Info

Publication number: CN114019614B
Application number: CN202111231673.4A
Authority: CN
Inventors: 吴明; 吴体荣; 朱礼吉
Original assignee: Nanjing Huamai Technology Co Ltd
Current assignee: Nanjing Huamai Technology Co Ltd
Priority date: 2021-10-22
Filing date: 2021-10-22
Publication date: 2023-06-09
Anticipated expiration: 2041-10-22
Also published as: CN114019614A

Abstract

The invention discloses an outdoor optical fiber connector and an optical fiber adapter, wherein the outdoor optical fiber connector comprises an SC (single crystal) inner part, an inserting core, an inner clamp, a circular hoop, a rotating shaft, an inner rod, an optical fiber, a protective cap, a compression ring, a heat shrinkage pipe and a tail sheath, wherein the inserting core is arranged in the SC inner part and the inner clamp; the optical fiber adapter comprises a main body seat, a ceramic sleeve, a U-shaped card, a nut and an end cap, wherein when the optical fiber adapter is connected with the outdoor optical fiber connector, the front end of the main body seat is inserted into a circular hoop in the outdoor optical fiber connector, and an inserting core in the outdoor optical fiber connector is inserted into the ceramic sleeve of the optical fiber adapter.

Description

Outdoor optical fiber connector and optical fiber adapter

Technical Field

The present invention relates to the field of optical fiber connection technologies, and in particular, to an outdoor optical fiber connector and an optical fiber adapter.

Background

The optical fiber connector is an indispensable optical communication connection element for fiber to the home (Fiber To The Home, FTTH), and is mainly used for the "last kilometer" of the FTTH fiber to the home, and is generally installed on optical communication distribution equipment near a residential community.

At present, the most common connection modes are: the adapter, the tail fiber and the field assembled optical fiber quick-connection assembly have poor waterproof performance, can be generally used indoors, and are rarely used in outdoor environments. Because of poor waterproof performance, the optical fiber assembly is generally only used inside optical communication equipment; in each construction, the optical communication equipment is opened, and then a tail fiber is inserted or an optical fiber quick-connection assembly is manufactured on site to realize the end forming of the optical fiber. Thus, the construction time is prolonged, the communication signals of the opened clients are possibly influenced, and the optical fibers which are already constructed inside the optical fibers can be possibly damaged. Meanwhile, when the field assembly type optical fiber quick-connection assembly is manufactured on site, the quality requirements on constructors are high, and if the installation quality is low, the optical signals are attenuated greatly. Therefore, the existing optical fiber splicing product cannot meet the requirements of single operation, quick construction, plug and play, high quality and quality consistency of constructors.

Disclosure of Invention

Based on the above problems, the present invention provides an outdoor optical fiber connector and an optical fiber adapter, which have the advantages of being capable of being used in an outdoor environment, simplifying the installation steps, and facilitating the rapid installation outdoors.

In one aspect, the invention provides an outdoor optical fiber connector, which comprises an SC (single-phase) inner part, an inserting core, an inner clamp, a circular hoop, a rotating shaft, an inner rod, an optical fiber, a protective cap, a compression ring, a heat shrinkage tube and a tail sheath, wherein the rotating shaft is hollow and stepped and cylindrical;

an annular positioning cylinder is arranged in the circular hoop, the annular positioning cylinder and the outer wall of the circular hoop are arranged at intervals, an inserting cylinder is arranged at the end part of the protective cap and is used for being inserted between the outer wall of the circular hoop and the positioning cylinder.

The invention is further provided with a first sealing ring between the circular hoop and the rotating shaft, and a first U-shaped groove for installing the first sealing ring is arranged outside the end part of the circular hoop; a second sealing ring is arranged between the inner rod and the rotating shaft, and a second U-shaped groove for installing the second sealing ring is arranged at the outer side of the tail end of the inner rod; the protective cap is provided with a third sealing ring, and a third U-shaped groove for installing the third sealing ring is formed in the outer side of the root of the plug tube.

The invention is further arranged that the side wall of the circular hoop is provided with a buckle with at least one claw facing the inner side of the circular hoop, the inner profile section of the position of the rotating shaft opposite to the buckle is elliptical, the length of the minor axis of the ellipse is equal to the radius of the outer profile circle at the buckle position of the circular hoop, the side surface of the insertion barrel is provided with a first large-mouth groove corresponding to the buckle, and a first wedge block for buckling with the buckle is arranged in the first large-mouth groove; the circular hoop is also provided with an arc-shaped C-shaped guide groove, the rotating shaft is provided with a limiting guide block extending into the C-shaped guide groove, and two limit positions of the limiting guide block in the C-shaped guide groove correspond to two states of the rotating shaft for pressing and separating from the buckle respectively; the tail part of the rotating shaft is provided with a pit, the inner rod is provided with a convex hull matched with the pit, and when the rotating shaft rotates to two states of pressing or separating from the buckle, the pit is meshed with the convex hull; at least one directional guide block is arranged on the inner side of the circular hoop and is used for being inserted into the first large-mouth groove.

The invention is further arranged that a D-shaped groove for the inner clamp to pass through is formed in the bottom of the circular hoop, a D-shaped positioning block matched with the D-shaped groove in shape is arranged on the inner clamp, a large round stop block is arranged above the D-shaped positioning block, the diameter of the large round stop block is equal to the inner diameter of the annular positioning cylinder, an arc-shaped positioning block protruding out of an outer edge line is arranged at the edge of the large round stop block, a first notch for the arc-shaped positioning block to pass through is formed in the annular positioning cylinder, a first extension protruding block is arranged at the inner side of the insertion cylinder on the protective cap, and the first extension protruding block is positioned in the first notch after the insertion cylinder is inserted into the circular hoop; the top end of the annular positioning cylinder is provided with a second notch at the position opposite to the first notch.

The invention is further arranged that the tail part of the inner clip is inserted into the inner rod, the tail part of the inner clip is provided with at least one back-off, the positions of the inner clip, which are positioned at two sides of the back-off, are provided with notches so that the back-off has elasticity, the inner rod is provided with a buckling hole corresponding to the back-off position, and after the tail part of the inner clip is inserted into the inner rod, the back-off enters into the buckling hole; the side face of the tail part of the inner clamp is also provided with a rectangular pin block, and the inner rod is provided with a rectangular pin hole for the rectangular pin block to enter.

The invention is further arranged to further comprise a first connecting belt, one end of the first connecting belt is connected to the protective cap, and the other end is connected to the inner rod; the top end of the protective cap is provided with a threading hole which penetrates radially.

On the other hand, the invention also provides an optical fiber adapter for the outdoor optical fiber connector to be matched with and used, which comprises a main body seat, a ceramic sleeve, a U-shaped clamp, a nut and an end cap, wherein the main body seat is cylindrical, a convex positioning plate is arranged on the main body seat, the part of the main body seat, which is positioned at the front side of the positioning plate, is an inserting part which is used for being inserted into a circular hoop in the outdoor optical fiber connector, between the outer wall of the circular hoop and the positioning cylinder, the part of the main body seat, which is positioned at the rear side of the positioning plate, is an installing part, threads which are used for being connected with the nut are arranged on the installing part, the ceramic sleeve is arranged in the U-shaped clamp, the U-shaped clamp is arranged in the main body seat, two clamping strips are arranged on the U-shaped clamp and are abutted against the inner wall of the main body seat, a bulge is arranged on the outer side wall of the clamping strips, a hole corresponding to the bulge is arranged on the side wall of the main body seat, when the optical fiber adapter is connected with the outdoor optical fiber connector, the front end of the main body seat is inserted into the circular hoop in the outdoor optical fiber connector, and the inserting core in the outdoor optical fiber connector is inserted into the ceramic sleeve of the optical fiber adapter, and the end cap, which is used for being sleeved at the front end of the main body.

The invention is further arranged that a fourth sealing ring is arranged at the outer side of the root part of the main body seat inserting part, and a fourth U-shaped groove for installing the fourth sealing ring is arranged on the main body seat inserting part; the inner side of the main body seat inserting part is provided with a second extending lug, and after the main body seat inserting part is inserted into the circular hoop, the first extending lug is positioned in the first notch.

The invention is further arranged that a second large-mouth groove is arranged on the inserting part of the main body seat, a second wedge block is arranged in the second large-mouth groove, when the optical fiber adapter is connected with the outdoor optical fiber connector, a buckle on a circular hoop in the outdoor optical fiber connector enters the second large-mouth groove and is buckled with the second wedge block, and a directional guide block on the circular hoop enters the second large-mouth groove.

The invention further provides a second connecting belt and a dustproof cap, wherein one end of the second connecting belt is connected with the end cap, the other end of the second connecting belt is connected to the main body seat, the dustproof cap is used for being inserted into the installation part on the main body seat, and the shape of the dustproof cap is matched with that of the U-shaped card.

In summary, the beneficial effects of the invention are as follows:

1. the outdoor optical fiber connector and the optical fiber adapter are matched for use, and are used for optical fiber connection in an outdoor environment, when the outdoor optical fiber connector is connected with the optical fiber adapter, the insertion part on the main body seat is inserted into the circular hoop, and the insertion part of the main body seat is positioned and guided through the inner wall of the circular hoop and the annular positioning cylinder, so that the inserting core in the outdoor optical fiber connector can be quickly and directly inserted into the ceramic sleeve in the optical fiber adapter, quick connection is realized, and the technical requirements on workers are lower in the connection process, thereby being beneficial to unifying connection standards;

2. after the outdoor optical fiber connector is connected with the optical fiber adapter, the SC inner part, the inserting core and the inner clamp are wrapped by the main body seat inserting part, the annular positioning cylinder, the circular hoop and the rotating shaft, so that the outdoor optical fiber connector has a good waterproof effect, is suitable for outdoor use, and secondly, the first sealing ring, the second sealing ring and the fourth sealing ring also improve the waterproof property of the outdoor optical fiber connector and the optical fiber adapter after being connected, thereby being beneficial to long-term outdoor use;

3. after the outdoor optical fiber connector is connected with the optical fiber adapter, the buckle is buckled with the second wedge block to lock the outdoor optical fiber connector and the optical fiber adapter, the buckle is pressed or separated through rotation of the rotating shaft, so that buckling and separation of the buckle and the second wedge block are realized, when the rotating shaft rotates, the rotation of the rotating shaft is limited through the limiting guide block in the C-shaped guide groove, and meanwhile, the rotating shaft is fixed to a certain degree after rotating in place through meshing of the pits and the convex hulls, so that the rotating shaft is prevented from rotating randomly;

4. through the positioning actions of the D-shaped positioning block, the large round stop block and the like, the inner clamp is fixed in the round hoop, the inner clamp is not easy to rotate and twist, the inner clamp is further positioned in the first notch through the arc-shaped positioning block, and after the outdoor optical fiber connector is connected with the optical fiber adapter, the second extending convex block penetrates through the first notch to compress the arc-shaped positioning block, so that the inner clamp is fixed, the stability of the inner clamp is further improved, and the reliability of optical fiber connection is ensured; in addition, set up the second breach and be used for observing the optic fibre terminal surface when connecting optic fibre on annular positioning cylinder, be favorable to carrying out the calibration to optic fibre.

5. The mechanism design of the insertion barrel on the protective cap is similar to the insertion part of the main body seat in the optical fiber adapter, and is used for blocking the opening of the outdoor optical fiber connector when the outdoor optical fiber connector is not connected with the optical fiber adapter, reducing dust, water vapor and the like from entering, and meanwhile, the optical fiber adapter is also provided with an end cap for protecting the optical fiber adapter.

Drawings

FIG. 1 is an overall schematic of an outdoor fiber optic connector of the present invention;

FIG. 2 is an exploded view of an outdoor fiber optic connector of the present invention;

FIG. 3 is a schematic view of the structure of the ferrule of the present invention;

FIG. 4 is a schematic view of the structure of the SC inner member and inner card assembly of the present invention;

FIG. 5 is a schematic view of the SC inner member and inner card assembly according to another aspect of the present invention;

FIG. 6 is a schematic view of the assembly of the SC inner part and inner card assembly and ferrule of the present invention;

FIG. 7 is a schematic view of the configuration of the bottom of the ferrule of the present invention;

FIG. 8 is a schematic view of the structure of the inner rod of the present invention;

FIG. 9 is a schematic view of an alternative view of the inner rod of the present invention;

FIG. 10 is a schematic view of a shaft according to the present invention;

FIG. 11 is a schematic view of another perspective of the transfer of the present invention;

FIG. 12 is a schematic diagram showing the judging of the direction of the SC inner member by the first notch and the second notch in the present invention, wherein the part a is a horizontal view angle, the part b is a second notch direction view angle, and the part c is a second notch direction view angle;

FIG. 13 is a schematic view of an assembled outdoor fiber optic connector of the present invention;

FIG. 14 is a schematic view showing an open state of the protective cap of the outdoor optical fiber connector according to the present invention;

FIG. 15 is a cross-sectional view of an outdoor fiber optic connector of the present invention showing the inside profile of the shaft at the ferrule clasp being oval;

FIG. 16 is a schematic view of the outdoor fiber optic connector of the present invention connected to a light adapter in a state where the buckle is not compressed by the shaft;

FIG. 17 is a cross-sectional view of the state of FIG. 16 at the limit block;

FIG. 18 is a schematic view of the outdoor fiber optic connector of the present invention connected to a light adapter in a state where the buckle is compressed by the shaft;

FIG. 19 is a cross-sectional view of the stop guide block in the FIG. 18 condition;

FIG. 20 is a schematic overall view of a fiber optic adapter according to the present invention;

FIG. 21 is an exploded view of a fiber optic adapter of the present invention;

FIG. 22 is a schematic view of the internal structure of a fiber optic adapter of the present invention;

FIG. 23 is an assembled schematic view of a fiber optic adapter of the present invention.

In the figure, 1, SC internals; 2. a core insert; 3. an inner card; 301. a D-shaped positioning block; 302. a large round stop block; 303. an arc-shaped positioning block; 304. reversing; 305. rectangular pin blocks; 4. a round hoop; 401. an annular positioning cylinder; 402. a first U-shaped groove; 403. a buckle; 404. a first notch; 405. a second notch; 406. a D-shaped groove; 407. a C-shaped guide groove; 408. a directional guide block; 5. a rotating shaft; 501. a limit guide block; 502. pit; 6. an inner rod; 601. a second U-shaped groove; 602. convex hulls; 603. a button hole; 604. rectangular pin holes; 7. a protective cap; 701. a plug cylinder; 702. a third U-shaped groove; 703. a first large mouth groove; 704. a first wedge; 707. a first extension bump; 708. a threading hole; 8. a compression ring; 9. a heat shrinkage tube; 10. a tail sheath; 11. a spring; 12. a first seal ring; 13. a second seal ring; 14. a third seal ring; 15. a first connecting band; 16. a main body seat; 161. a positioning plate; 162. an insertion section; 163. a mounting part; 164. a fourth U-shaped groove; 165. a second extension bump; 166. a second large mouth groove; 167. a second wedge; 17. a ceramic sleeve; 18. a U-shaped card; 181. clamping strips; 182. a protrusion; 19. a nut; 20. an end cap; 21. a fourth seal ring; 22. a second connecting band; 23. a dust cap; 24. an optical fiber.

Description of the embodiments

The following describes in detail the embodiments of the present invention with reference to the drawings.

Embodiment one: referring to fig. 1-19, an outdoor optical fiber connector comprises an SC internal part 1, a ferrule 2, an inner clamp 3, a round hoop 4, a rotating shaft 5, an inner rod 6, an optical fiber 24, a protective cap 7, a compression ring 8, a heat shrinkage tube 9 and a tail sheath 10, wherein the rotating shaft 5 is in a hollow stepped cylindrical shape, the round hoop 4 is arranged in a large-diameter end of the rotating shaft 5, the inner rod 6 is arranged in a small-diameter end of the rotating shaft 5, the SC internal part 1 is buckled with the inner clamp 3, the ferrule 2 is arranged in the SC internal part 1 and the inner clamp 3, the inner clamp 3 is arranged in the round hoop 4, the inner clamp 3 penetrates out of the round hoop 4 and is connected with the inner rod 6 in the rotating shaft 5, the stripped optical fiber 24 passes through the inner rod 6 and is connected in the ferrule 2, the compression ring 8 is arranged at the tail part of the inner rod 6 and is used for compressing aramid filaments on the optical fiber 24 on the inner rod 6, the round hoop 9 is used for wrapping the compression ring 8 and the junction of the inner rod 6 and the optical fiber 24, the tail sheath 10 is sleeved outside the heat shrinkage tube 9, one end of the tail sheath 10 is connected with the inner rod 6;

an annular positioning cylinder 401 is arranged in the circular hoop 4, the annular positioning cylinder 401 and the outer wall of the circular hoop 4 are arranged at intervals, an insertion cylinder 701 is arranged at the end part of the protective cap 7, and the insertion cylinder 701 is used for being inserted between the outer wall of the circular hoop 4 and the positioning cylinder.

A first sealing ring 12 is arranged between the circular hoop 4 and the rotating shaft 5, and a first U-shaped groove 402 for installing the first sealing ring 12 is arranged outside the end part of the circular hoop 4; a second sealing ring 13 is arranged between the inner rod 6 and the rotating shaft 5, and a second U-shaped groove 601 for installing the second sealing ring 13 is arranged outside the tail end of the inner rod 6; the third sealing ring 14 is arranged on the protective cap 7, and a third U-shaped groove 702 for installing the third sealing ring 14 is arranged on the outer side of the root of the insertion barrel 701.

The side wall of the circular hoop 4 is provided with a buckle 403 with at least one claw facing the inner side of the circular hoop 4, the inner profile section of the position of the rotating shaft 5 opposite to the buckle 403 is elliptical, the elliptical short shaft length is equal to the radius of the outer profile circle at the buckle 403 of the circular hoop 4, the side surface of the insertion barrel 701 is provided with a first large-mouth groove 703 corresponding to the buckle 403, and a first wedge block 704 used for being buckled with the buckle 403 is arranged in the first large-mouth groove 703; the circular hoop 4 is also provided with an arc-shaped C-shaped guide slot 407, the rotating shaft 5 is provided with a limit guide block 501 extending into the C-shaped guide slot 407, and two limit positions of the limit guide block 501 in the C-shaped guide slot 407 respectively correspond to two states of the rotating shaft 5 for pressing and separating from the buckle 403; the tail of the rotating shaft 5 is provided with a pit 502, the inner rod 6 is provided with a convex hull 602 matched with the pit 502, and when the rotating shaft 5 rotates to two states of pressing or separating from the buckle 403, the pit 502 is meshed with the convex hull 602; at least one orientation guide block 408 is provided inside the eyelet 4, the orientation guide block 408 being adapted to be inserted into the first large mouth slot.

The bottom of the circular hoop 4 is provided with a D-shaped groove 406 for the inner card 3 to pass through, the inner card 3 is provided with a D-shaped positioning block 301 with the shape matched with that of the D-shaped groove 406, a large round stop block 302 is arranged above the D-shaped positioning block 301, the diameter of the large round stop block 302 is equal to the inner diameter of the annular positioning cylinder 401, the edge of the large round stop block 302 is provided with an arc-shaped positioning block 303 protruding out of an outer edge line, the annular positioning cylinder 401 is provided with a first notch 404 for the arc-shaped positioning block 303 to pass through, the inner side of the insertion cylinder 701 on the protective cap 7 is provided with a first extension bump 707, and after the insertion cylinder 701 is inserted into the circular hoop 4, the first extension bump 707 is positioned in the first notch 404; a second notch 405 is provided at a position opposite to the first notch 404 at the top end of the annular positioning cylinder 401.

A second notch 405 is provided for viewing the end face of the optical fiber when the optical fiber is connected, facilitating alignment of the optical fiber. Specifically, in the field of optical fiber movable connection, the end face of the optical fiber movable connector after grinding is divided into two categories, namely a plane type (PC or UPC for short) and an inclined plane type (APC for short) of 8 degrees or 9 degrees, according to the standard of the SC connector, the SC internal part 1 is directional, and the direction of the SC internal part 1 is observed and identified through the second notch 405 and the first notch 404. Referring to fig. 12, when the first notch 404 is used for identifying the direction of the SC internal component 1 from the vertical direction, the outside surface of the SC internal component 1 is provided with an oblique angle for correct installation, the end surface of the ferrule 2 is provided with an oblique angle for correct downward left, and if two mounting modes of the ferrule 2, the SC internal component 1 and the internal card 3 do not meet the requirements, the second notch 405 is positioned on the cambered surface on the opposite side of the first notch 404 and is used for viewing the corresponding downward right of the end surface of the ferrule 2 from the opposite side.

The tail of the inner clip 3 is inserted into the inner rod 6, the tail of the inner clip 3 is provided with at least one back-off 304, the positions of the inner clip 3, which are positioned at two sides of the back-off 304, are provided with notches so that the back-off 304 has elasticity, the inner rod 6 is provided with a button hole 603 corresponding to the position of the back-off 304, and after the tail of the inner clip 3 is inserted into the inner rod 6, the back-off 304 enters the button hole 603; the side surface of the tail part of the inner clamp 3 is also provided with a rectangular pin block 305, and the inner rod 6 is provided with a rectangular pin hole 604 for the rectangular pin block 305 to enter.

The protective cap also comprises a first connecting belt 15, one end of the first connecting belt 15 is connected to the protective cap 7, and the other end is connected to the inner rod 6; the top end of the protective cap 7 is provided with a threading hole 708 which penetrates radially.

When the protective cap 7 is inserted into the circular hoop 4, the inner wall of the insertion barrel 701 is in contact with the annular positioning barrel 401, the outer wall of the insertion barrel 701 is in contact with the inner wall of the circular hoop 4, the first extending convex block 707 enters the first notch 404 and is in contact with the arc-shaped positioning block 303, the first wedge block 704 enters the position of the buckle 403, and the orientation guide block 408 on the inner side of the circular hoop 4 enters the first large-mouth groove to guide and position the insertion barrel 701. At this time, the buckle 403 is pressed by rotating the rotating shaft 5, so that the protective cap 7 can be locked, and when the protective cap 7 needs to be taken down, the rotating shaft 5 is reversed.

When the outdoor optical fiber connector is assembled, the SC inner piece 1 is firstly assembled into the inserting core 2, the inserting core 2 is sleeved with the spring 11 (the spring 11 is used for applying a certain thrust force to the inserting core 2), the front end of the inner card 3 is buckled in the tail clamping groove of the SC inner piece 1, and the guide surface of the inner card 3 is correspondingly assembled with the inclined surface of the SC inner piece 1. The first sealing ring 12 is arranged in a first U-shaped groove 402 at the front end of the outer side of the circular hoop 4; the second sealing ring 13 is arranged in the second U-shaped groove 601 at the tail end of the inner rod 6, one end of the first connecting sleeve is sleeved in the other groove at the tail end of the inner rod 6, the other end of the first connecting sleeve is sleeved in the corresponding groove arranged on the protective cap 7, and the third sealing ring 14 is sleeved in the third U-shaped groove 702 of the protective cap 7. Then, after the tail sheath 10, the heat shrinkage tube 9, the compression ring 8, the inner rod 6, the rotating shaft 5 and the circular hoop 4 are sequentially penetrated into the optical fiber 24, the core insert 2 is injected with glue, the optical fiber 24 after stripping the optical fiber is penetrated into the core insert 2, and the end face is dried and cut according to the process requirement. Then the circular hoop 4 is sleeved into the front end of the rotating shaft 5, the first sealing ring 12 at the front end of the circular hoop 4 is contacted with the round hole at the front end inside the rotating shaft 5, and the limit guide block 501 in the rotating shaft 5 is arranged in the C-shaped groove at the bottom of the circular hoop 4. The inner clamp 3 is arranged in a D-shaped hole in the circular hoop 4, and a D-shaped positioning block 301 in the middle of the inner clamp 3 is correspondingly assembled with the inner clamp; then the inner rod 6 is penetrated from the tail hole of the circular hoop 4 to be axially butted with the inner clamp 3; then, sleeving the aramid fiber on the optical fiber 24 on the concave-convex annular surface at the tail part of the inner rod 6, sleeving a press ring 8, pressing the press ring 8 by a machine, sleeving a heat shrinkage tube 9 until the press ring is not moved, and wrapping the press ring 8 and the optical fiber 24 after high-temperature heat shrinkage; the tail sheath 10 is then applied until it is pushed. Corresponding marks are arranged on the outer wall of the protective cap 7, so that the direction can be quickly found when the protective cap 7 is used.

Embodiment two: 20-23, for use with the outdoor optical fiber connector of the first embodiment, the optical fiber adapter includes a main body seat 16, a ceramic sleeve 17, a U-shaped card 18, a nut 19 and an end cap 20, the main body seat 16 is cylindrical, a protruding positioning plate 161 is provided on the main body seat 16, a portion of the main body seat 16 located at the front side of the positioning plate 161 is an insertion portion 162 for being inserted between the outer wall of the ferrule 4 and the positioning cylinder in the outdoor optical fiber connector, a portion of the main body seat 16 located at the rear side of the positioning plate 161 is a mounting portion 163, threads for connecting with the nut 19 are provided on the mounting portion 163, the main body seat 16 is used for being mounted on a wiring box, the main body seat 16 can be fixed on the wiring box through the positioning plate 161 and the nut 19, and the insertion portion 162 of the main body seat 16 faces outwards. The ceramic sleeve 17 is arranged in the U-shaped card 18, the U-shaped card 18 is arranged in the main body seat 16, two clamping strips 181 are arranged on the U-shaped card 18 and are abutted against the inner wall of the main body seat 16, the clamping strips 181 are symmetrical clamping strips 181 of the SC-type optical fiber connector, the middle of the U-shaped card 18 is provided with a cylindrical through hole, the outer part is small, the inner part is large, the outermost side is horn-shaped, and the inner part and the outer part are large and are used for installing the ceramic sleeve. The outside of card strip 181 is equipped with protruding 182, is equipped with the hole that corresponds with protruding 182 on the lateral wall of main part seat 16, when the fiber optic adapter with outdoor fiber optic connector is connected, the front end of main part seat 16 inserts in the ferrule 4 in the outdoor fiber optic connector, and the lock pin 2 in the outdoor fiber optic connector inserts in the ceramic sleeve 17 of fiber optic adapter, end cap 20 is used for the cover at the front end of main part seat 16.

A fourth sealing ring 21 is arranged at the outer side of the root of the insertion part 162 of the main body seat 16, and a fourth U-shaped groove 164 for installing the fourth sealing ring 21 is arranged on the insertion part 162 of the main body seat 16; the second extending protrusion 165 is disposed on the inner side of the insertion portion 162 of the main body seat 16, and the first extending protrusion 707 is located in the first notch 404 after the insertion portion 162 of the main body seat 16 is inserted into the ferrule 4.

The main body seat 16 is provided with a second large-mouth groove 166 on the insertion part 162, a second wedge block 167 is arranged in the second large-mouth groove 166, when the optical fiber adapter is connected with the outdoor optical fiber connector, the buckle 403 on the circular hoop 4 in the outdoor optical fiber connector enters the second large-mouth groove 166 and is buckled with the second wedge block 167, the directional guide block 408 on the circular hoop 4 enters the second large-mouth groove, and blind insertion during connection can be realized through the positioning of the directional guide block 408, so that the installation difficulty is reduced.

The device further comprises a second connecting belt 22 and a dust cap 23, wherein one end of the second connecting belt 22 is connected with the end cap 20, the other end of the second connecting belt is connected to the main body seat 16, the dust cap 23 is used for being inserted into a mounting part 163 on the main body seat 16, and the shape of the dust cap 23 is matched with that of the U-shaped card 18.

The overall structure of the insertion portion 162 of the main body seat 16 is similar to that of the cartridge 701 portion of the helmet 7 in the first embodiment.

What has been described above is merely a preferred embodiment of the present invention, and the non-illustrated portions are all of the design or means conventional in the art. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the inventive concept, and these are all within the scope of the present invention.

Claims

1. An outdoor optical fiber connector is characterized by comprising an SC (single-phase) inner part (1), an inserting core (2), an inner clamp (3), a circular hoop (4), a rotating shaft (5), an inner rod (6), an optical fiber (24), a protective cap (7), a compression ring (8), a heat shrinkage tube (9) and a tail sheath (10), wherein the rotating shaft (5) is hollow and stepped and cylindrical, the circular hoop (4) is arranged in the large-diameter end of the rotating shaft (5), the inner rod (6) is arranged in the small-diameter end of the rotating shaft (5), the SC inner part (1) is buckled with the inner clamp (3), the inserting core (2) is arranged in the SC inner part (1) and the inner clamp (3), the inner clamp (3) is arranged in the circular hoop (4) and the inner clamp (3) penetrates out of the circular hoop (4) to be connected with the inner rod (6) in the rotating shaft (5), the stripped optical fiber (24) is connected in the inserting core (2) after penetrating through the inner rod (6), the tail part of the inner rod (6) is arranged on the tail part of the inner rod (6) and is used for compressing the aramid fiber (24) on the outer side of the optical fiber (6) and the compression ring (9) is arranged at the outer side of the compression ring (9), one end of the tail sheath (10) is connected with the tail part of the inner rod (6);

an annular positioning cylinder (401) is arranged in the circular hoop (4), the annular positioning cylinder (401) and the outer wall of the circular hoop (4) are arranged at intervals, an inserting cylinder (701) is arranged at the end part of the protective cap (7), and the inserting cylinder (701) is used for being inserted between the outer wall of the circular hoop (4) and the positioning cylinder;

the bottom of circle hoop (4) is equipped with D type groove (406) that supplies interior card (3) to pass, is equipped with D type locating piece (301) that shape and D type groove (406) match on interior card (3), and D type locating piece (301) top is equipped with big circle dog (302), and the diameter of big circle dog (302) equals the internal diameter of annular location section of thick bamboo (401), and the edge of big circle dog (302) is equipped with arc locating piece (303) of protruding outer fringe line, is equipped with first breach (404) that supply arc locating piece (303) to pass on annular location section of thick bamboo (401).

2. The outdoor optical fiber connector according to claim 1, wherein a first sealing ring (12) is provided between the ferrule (4) and the rotary shaft (5), and a first U-shaped groove (402) for mounting the first sealing ring (12) is provided outside an end portion of the ferrule (4); a second sealing ring (13) is arranged between the inner rod (6) and the rotating shaft (5), and a second U-shaped groove (601) for installing the second sealing ring (13) is arranged at the outer side of the tail end of the inner rod (6); the protective cap (7) is provided with a third sealing ring (14), and a third U-shaped groove (702) for installing the third sealing ring (14) is formed in the outer side of the root of the insertion barrel (701).

3. The outdoor optical fiber connector according to claim 1, wherein a buckle (403) with at least one claw facing the inner side of the round hoop (4) is arranged on the side wall of the round hoop (4), the inner profile section of the position of the rotating shaft (5) opposite to the buckle (403) is elliptical, the length of the elliptical short axis is equal to the radius of the outer profile circle at the buckle (403) of the round hoop (4), a first large mouth groove (703) corresponding to the buckle (403) is arranged on the side surface of the insertion barrel (701), and a first wedge block (704) for being buckled with the buckle (403) is arranged in the first large mouth groove (703); the circular hoop (4) is also provided with an arc-shaped C-shaped guide groove (407), the rotating shaft (5) is provided with a limit guide block (501) extending into the C-shaped guide groove (407), and two limit positions of the limit guide block (501) in the C-shaped guide groove (407) correspond to two states of the rotating shaft (5) for pressing and separating from the buckle (403) respectively; the tail of the rotating shaft (5) is provided with a pit (502), the inner rod (6) is provided with a convex hull (602) matched with the pit (502), and when the rotating shaft (5) rotates to two states of pressing or separating from the buckle (403), the pit (502) is meshed with the convex hull (602); at least one directional guide block (408) is arranged on the inner side of the circular hoop (4), and the directional guide block (408) is used for being inserted into the first large-mouth groove.

4. The outdoor optical fiber connector according to claim 1, wherein a first extension projection (707) is provided on the inner side of the insertion tube (701) on the protective cap (7), and the first extension projection (707) is located in the first notch (404) after the insertion tube (701) is inserted into the ferrule (4); a second notch (405) is arranged at the position, opposite to the first notch (404), of the top end of the annular positioning cylinder (401).

5. The outdoor optical fiber connector according to claim 1, wherein the tail of the inner clip (3) is inserted into the inner rod (6), the tail of the inner clip (3) is provided with at least one back-off (304), the positions of the inner clip (3) on two sides of the back-off (304) are provided with notches to enable the back-off (304) to have elasticity, the inner rod (6) is provided with a buckling hole (603) corresponding to the position of the back-off (304), and after the tail of the inner clip (3) is inserted into the inner rod (6), the back-off (304) enters the buckling hole (603); the side surface of the tail part of the inner clamp (3) is also provided with a rectangular pin block (305), and the inner rod (6) is provided with a rectangular pin hole (604) for the rectangular pin block (305) to enter.

6. The outdoor optical fiber connector according to claim 1, further comprising a first connection band (15), one end of the first connection band (15) being connected to the helmet (7) and the other end being connected to the inner rod (6); the top end of the protective cap (7) is provided with a threading hole (708) which penetrates radially.

7. An optical fiber adapter for use with an outdoor optical fiber connector according to any one of claims 1 to 6, comprising a main body seat (16), a ceramic sleeve (17), a U-shaped clamp (18), a nut (19) and an end cap (20), wherein the main body seat (16) is cylindrical, a protruding positioning plate (161) is arranged on the main body seat (16), the part of the main body seat (16) located at the front side of the positioning plate (161) is an insertion part (162) for being inserted between the outer wall of a round hoop (4) and the positioning cylinder in the outdoor optical fiber connector, the part of the main body seat (16) located at the rear side of the positioning plate (161) is a mounting part (163), threads for being connected with the nut (19) are arranged on the mounting part (163), the ceramic sleeve (17) is arranged in the U-shaped clamp (18), the U-shaped clamp (18) is arranged in the main body seat (16), two clamping strips (181) are arranged on the U-shaped clamp (18) and abut against the inner wall of the main body seat (16), the outer side of the clamping strips (181) is provided with a protrusion (182), the main body (16) is arranged on the outer side of the main body (181) and the protrusion (182) is provided with a corresponding hole (182) for being inserted into the optical fiber connector when the optical fiber connector is connected with the outdoor optical fiber connector, and the front end of the optical fiber connector is connected with the outdoor optical fiber connector, the ferrule (2) in the outdoor optical fiber connector is inserted into the ceramic sleeve (17) of the optical fiber adapter, and the end cap (20) is used for being sleeved at the front end of the main body seat (16);

the main body seat (16) is provided with a second large-mouth groove (166) on the inserting part (162), a second wedge block (167) is arranged in the second large-mouth groove (166), and when the optical fiber adapter is connected with the outdoor optical fiber connector, a buckle (403) on a circular hoop (4) in the outdoor optical fiber connector enters the second large-mouth groove (166) and is buckled with the second wedge block (167), and a directional guide block (408) on the circular hoop (4) enters the second large-mouth groove.

8. The optical fiber adapter according to claim 7, wherein a fourth sealing ring (21) is arranged outside the root of the insertion part (162) of the main body seat (16), and a fourth U-shaped groove (164) for installing the fourth sealing ring (21) is arranged on the insertion part (162) of the main body seat (16); the second extending convex block (165) is arranged on the inner side of the inserting part (162) of the main body seat (16), and after the inserting part (162) of the main body seat (16) is inserted into the circular hoop (4), the first extending convex block (707) is positioned in the first notch (404).

9. The fiber optic adapter of claim 7, further comprising a second connector strip (22) and a dust cap (23), wherein one end of the second connector strip (22) is connected to the end cap (20) and the other end is connected to the body mount (16), the dust cap (23) is configured to be inserted into the mounting portion (163) of the body mount (16), and the dust cap (23) is shaped to mate with the U-shaped card (18).