CN113835161B

CN113835161B - Optical fiber connector, optical fiber adapter, optical fiber connector and fiber distribution box

Info

Publication number: CN113835161B
Application number: CN202111159809.5A
Authority: CN
Inventors: 陈应东; 余敏函
Original assignee: Hangzhou Runzhou Optoelectronic Technology Co ltd
Current assignee: Hangzhou Runzhou Optoelectronic Technology Co ltd
Priority date: 2021-09-30
Filing date: 2021-09-30
Publication date: 2022-08-23
Anticipated expiration: 2041-09-30
Also published as: CN113835161A

Abstract

The utility model relates to an optical fiber connector, optical fiber adapter, optical fiber connector and divide fine case, optical fiber adapter includes the go-between, the go-between is arranged in inserting the annular gap between optical fiber connector's interior ring seat and the closure cover, be provided with the closure structure on the go-between, the closure structure is including setting up the draw-in groove on the go-between, the draw-in groove is used for supplying the closure of optical fiber connector to sheathe in the checkpost that radially floats the installation and wears to establish, the at least one side of circumference that just is located the draw-in groove on the go-between is provided with the guide face that the guide checkpost breaks away from the draw-in groove. The optical fiber connector comprises an inner ring seat and an outer ring seat, wherein the inner ring seat is provided with an axially arranged cavity, and the cavity is used for accommodating an optical fiber; one end of the locking sleeve is rotatably connected outside the inner ring seat, an annular gap which is provided with an opening at one end and used for inserting the connecting ring of the optical fiber adapter is arranged between the inner ring seat and the locking sleeve, and at least one clip which floats along the radial direction is arranged on the circumferential direction of the inner wall of the locking sleeve; this application has the higher effect of plug efficiency.

Description

Optical fiber connector, optical fiber adapter, optical fiber connector and fiber distribution box

Technical Field

The application relates to the field of waterproof optical fiber connectors, in particular to an optical fiber connector, an optical fiber adapter, an optical fiber connector and a fiber distribution box.

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.

In order to avoid fusion splicing in the field when used in a distribution box, a fiber optic adapter is usually integrated into the distribution box and is pluggable into the fiber optic adapter via a fiber jumper with a fiber optic connector. Nowadays, a commonly used connection mode is to integrate an L-shaped groove on the optical fiber adapter, and to fit a point corresponding to the L-shaped groove on the optical fiber connector, where the point slides in through an opening of the L-shaped groove and then rotates along a predetermined direction to lock the optical fiber connector with the optical fiber adapter.

This kind of mode is comparatively loaded down with trivial details at the in-process of grafting fiber connector and fiber adapter, leads to the in-process inefficiency of installing the branch fine case.

Disclosure of Invention

In order to improve the efficiency that fiber connector and fiber adapter plug are connected, this application provides a fiber connector, fiber adapter, fiber connector and divide fine case.

In a first aspect, the present application provides an optical fiber adapter, which adopts the following technical solutions:

the utility model provides an optical fiber adapter, includes the go-between, the go-between is arranged in inserting the annular gap between optical fiber connector's interior ring seat and the closure cover, be provided with the closure structure on the go-between, the closure structure is including setting up the draw-in groove on the go-between, the draw-in groove is used for supplying the closure of optical fiber connector to sheathe in the checkpost that radial float was installed and wears to establish, just be located on the go-between the at least one side of circumference of draw-in groove is provided with the guide face that the guide checkpost breaks away from the draw-in groove.

Through adopting above-mentioned technical scheme, when adopting above-mentioned fiber adapter to be connected with the fiber connector who corresponds, go into the draw-in groove through floating of the checkpost on the fiber connector, afterwards, the checkpost can only break away from the draw-in groove through the guide face of draw-in groove one side, thereby the mode that can directly adopt the cut-in directly to be connected fiber adapter and fiber connector at the in-process of plug, and at the in-process of unblock, only need corresponding structure on the corresponding rotation fiber connector, can make the checkpost break away from the draw-in groove under the effect of guide face, thereby make fiber connector can separate fiber adapter relatively, plug efficiency is higher.

Preferably, circumference one side that just is located the draw-in groove on the go-between is provided with the separation groove that the checkpost that supplies the fiber connector wears to establish, the separation groove axial communicates in the go-between and deviates from the checkpost that the fiber connector inserted the one end of direction and breaks away from with the fiber connector, it separates the piece to be provided with between groove and the draw-in groove to break away from, the guide face set up in separate on the piece.

Through adopting above-mentioned technical scheme, this kind of setting can increase the damping sense of the in-process of rotation unblock, also can reduce the probability that the checkpost slided to the draw-in groove again simultaneously.

Preferably, be provided with the guiding groove that is located the draw-in groove towards fiber connector insertion direction one side on the go-in ring, be provided with the locking block who cuts off guiding groove and draw-in groove on the go-in ring, be provided with the outside unsteady spigot surface of checkpost that is connected and guides fiber connector with the guiding groove on the locking block.

By adopting the technical scheme, the mode can further reduce the damping sense generated by the optical fiber adapter and the optical fiber connector in the insertion process, so that the insertion process is relatively easy and convenient to install.

Preferably, the groove width of the guide groove gradually decreases along the insertion direction of the optical fiber connector.

Through adopting above-mentioned technical scheme, when the checkpost is not just to the time with the draw-in groove, also can stir the checkpost to the just right state with the draw-in groove through the cell wall of guiding groove with the comparatively quick insertion process, further simplified installation steps for the insertion process is more convenient.

Preferably, the locking block has a stopper portion at both sides of the guide surface.

Through adopting above-mentioned technical scheme, when the checkpost received the effect of guide face and outwards floated, spacing through spacing portion can hinder the checkpost to slide to both sides and break away from to make can be comparatively accurate assemble in the insertion process, reduce the emergence of the condition that can't carry out the closure and connect.

Preferably, two locking structures are symmetrically arranged on the circumference of the connecting ring.

By adopting the technical scheme, the arrangement facilitates the production of the optical fiber adapter by the mold, the production cost is low, and meanwhile, the circumferential stress of the optical fiber adapter can be uniform, so that the connection strength is improved.

Preferably, still including being located the go-between and being located the through groove of locking structure one side, be provided with on the through groove be used for with the stopper butt of fiber connector with the checkpost that hinders fiber connector break away from the stopper.

Through adopting above-mentioned technical scheme, the setting of stopper can assist the stable of realizing fiber connector and fiber connector to be connected, further improves joint strength.

Preferably, the optical fiber adapter is connected with an adapter dust cover, the adapter dust cover has the locking cover, the locking cover rotates to be connected outside the go-between, the inboard of locking cover is provided with the checkpost that radially floats the installation and be used for the joint in the draw-in groove.

Preferably, the optical fiber connector further comprises a connecting pipe positioned on the inner side of the connecting ring and a rotation stopping structure arranged on the connecting pipe, wherein the connecting pipe is used for being connected with the inner ring seat of the optical fiber connector and is circumferentially and relatively fixed with the inner ring seat through the rotation stopping structure.

Through adopting above-mentioned technical scheme, this kind of setting can avoid the relative rotation in the connection process between fiber connector and the fiber connector on the one hand, guarantees the stability in the transmission course, and this kind of setting of on the other hand makes at the in-process that rotates fiber connector, and the checkpost can not take place to rotate fiber connector relatively to improve the stability in the connection process.

In a second aspect, the present application provides an optical fiber connector that adopts the following technical solution:

an optical fiber connector comprising:

the inner ring seat is provided with an axially arranged cavity which is used for accommodating an optical fiber;

one end of the locking sleeve is rotatably connected outside the inner ring seat, an annular gap with an opening at one end is formed between the inner ring seat and the locking sleeve and used for inserting a connecting ring of the optical fiber adapter, and at least one clip floating along the radial direction is arranged on the circumferential direction of the inner wall of the locking sleeve;

the clamp is used for being inserted into a clamping groove of a connecting ring of the optical fiber adapter and can be guided to be separated from the clamping groove through a guide surface on one circumferential side of the clamping groove of the optical fiber adapter.

Through adopting above-mentioned technical scheme, when adopting above-mentioned fiber connector to be connected with the fiber adapter who corresponds, go into the draw-in groove through the floating of the checkpost that the closure was sheathe in, afterwards, the checkpost can only break away from the draw-in groove through the guide face of draw-in groove one side, thereby the in-process at the plug can directly adopt the mode of cut straightly to be connected fiber adapter and fiber connector, and at the in-process of unblock, only need corresponding rotation closure cover, can make the checkpost break away from the draw-in groove under the effect of guide face, thereby make fiber connector separate fiber adapter relatively, plug efficiency is higher.

Preferably, a plurality of deformation pieces are arranged at one axial end of the locking sleeve, a distance is reserved between every two adjacent deformation pieces, and the clamp is fixedly installed on the inner side of each deformation piece.

Preferably, a side of the clip facing away from the fiber optic adapter mounting direction is configured as a radially extending flat surface.

Through adopting above-mentioned technical scheme, stability when having improved checkpost and draw-in groove joint for fiber connector is difficult to break away from under the axial effect of drawing with fiber connector.

Preferably, the periphery of interior ring seat is provided with the joint annular, the axial one end of lock cover has a plurality of connection pieces, and is adjacent have the interval between the connection piece, the joint piece of joint in the joint annular is installed to the inboard of connection piece.

By adopting the technical scheme, the mode quickly, simply and conveniently realizes the rotary connection of the locking sleeve and the inner ring seat, and the structure is simple.

Preferably, the inner side wall of the locking sleeve is provided with a convex block, the periphery of the inner ring seat is convexly provided with a limiting rib, and one section of the circumference of the limiting rib is provided with a limiting area for the convex block to penetrate through.

Through adopting above-mentioned technical scheme, can carry on spacingly to the turned angle of locking cover, further improve the efficiency and the joint strength who inserts the installation.

Preferably, the fiber connector is connected with a connector shield, the connector shield has the go-between of wearing to establish into the annular gap, be provided with the draw-in groove that supplies the checkpost joint on the go-between, the at least one side of circumference of draw-in groove is provided with the guide face that the guide checkpost breaks away from the draw-in groove.

In a third aspect, the present application provides an optical fiber connector that adopts the following technical solution:

an optical fiber connector comprises an optical fiber connector and an optical fiber adapter which are coaxially butted,

the fiber connector includes:

an inner ring seat having an axially disposed cavity for receiving an optical fiber,

one end of the locking sleeve is rotatably connected outside the inner ring seat, an annular gap with an opening at one end is formed between the inner ring seat and the locking sleeve, and at least one clip floating along the radial direction is arranged on the circumferential direction of the inner wall of the locking sleeve;

the fiber optic adapter comprises:

the go-between, the go-between is arranged in inserting fiber connector's annular gap, be provided with the locking structure with checkpost one-to-one on the go-between, locking structure is including setting up the draw-in groove on the go-between, the draw-in groove is used for supplying the checkpost to wear to establish, just be located on the go-between the at least one side of circumference of draw-in groove is provided with the guide face that the guide checkpost breaks away from the draw-in groove.

Through adopting above-mentioned technical scheme, when adopting above-mentioned fiber connector to be connected with fiber adapter, go into the draw-in groove through the floating of the checkpost that the closure was sheathe in, afterwards, the checkpost only can break away from the draw-in groove through the guide face of draw-in groove one side, thereby the in-process at the plug can directly adopt the mode of cut straightly to be connected fiber adapter and fiber connector, and at the in-process of unblock, only need corresponding rotation closure cover, can make the checkpost break away from the draw-in groove under the effect of guide face, thereby make fiber connector separate fiber adapter relatively, plug efficiency is higher.

Preferably, the interior ring seat installs the sealing washer outward, the sealing washer external diameter face has at least three and go up ring butt and complex sealing lip limit, the fiber connector with behind the optic fibre adapter closure, sealing lip limit butt respectively on the terminal surface and the inner wall of go-between.

By adopting the technical scheme, the sealing of the joint of the inner ring seat and the connecting ring can be realized by the arrangement, and the sealing effect is better.

In a fourth aspect, the application provides a fiber distribution box which adopts the following technical scheme:

the utility model provides a divide fine case, divide fine case and go up to install the optic fibre adapter, the optic fibre adapter includes foretell optic fibre adapter's structure.

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

1. the plugging efficiency is high;

2. structural strength is high, is difficult to the pine under drawing the state and takes off.

Drawings

FIG. 1 is an exploded view of a fiber optic connector.

Fig. 2 is a schematic diagram of a fiber optic adapter.

Fig. 3 is a schematic structural diagram of an optical fiber connector.

Fig. 4 is an exploded view of the locking sleeve and the inner ring seat of the optical fiber connector.

FIG. 5 is a front view of the fiber optic connector at the connection point, wherein the direction of the arrow indicates the direction of rotation of the locking sleeve.

FIG. 6 is a cross-sectional view of a fiber optic connector.

FIG. 7 is an exploded view of the ferrule, tailpipe, and boot in the fiber optic connector.

Fig. 8 is a schematic cross-sectional view of the seal ring after being deformed by compression.

Fig. 9 is a schematic view of the fiber optic connector passing through a plastic cable connector dust cap.

FIG. 10 is an exploded view of a fiber optic adapter and an adapter dust cap.

FIG. 11 is a partial schematic view of a fiber optic adapter applied to a fiber distribution cabinet with the fiber optic connectors shown disengaged from the fiber optic adapter.

FIG. 12 is an exploded view of a fiber optic adapter with fiber optic connectors attached to both ends.

Description of the reference numerals: 100. an optical fiber connector; 200. a fiber optic adapter; 210. a base; 220. a connecting ring; 110. an inner ring seat; 120. locking sleeve; 130. an annular gap; 140. a clip; 1. a locking structure; 221. a card slot; 222. a guide surface; 223. a guide groove; 224. a locking block; 225. a guide surface; 226. a disengagement groove; 227. a blocking block; 228. a limiting part; 2. an auxiliary locking structure; 21. a groove is arranged in a penetrating way; 22. a limiting block; 150. deformation sheets; 141. a guiding cambered surface; 160. connecting sheets; 161. a clamping block; 111. clamping the ring groove; 121. a bump; 112. limiting ribs; 113. a limiting area; 230. a connecting pipe; 231. a stop plane; 114. an abutment plane; 170. an outer sheath; 180. an inner sheath; 190. a ferrule assembly; 171. an inner chute; 1100. a compression spring; 1110. an O-ring; 1120. a tail pipe; 1130. a tail sleeve; 1121. a claw; 1140. a rubber sleeve; 300. a seal ring; 310. a sealing lip; 400. a dust cover of the connector; 500. a plastic cable; 600. an adapter dust cap; 240. a connecting seat; 250. and a locking ring.

Detailed Description

The present application is described in further detail below with reference to figures 1-12.

The embodiment of the application discloses fiber connector. Referring to fig. 1, the optical fiber connector includes a fiber connector 100 coaxially mated with a fiber adapter 200, at least one end of the fiber adapter 200 being configured to mate with the fiber connector 100. The fiber optic adapter 200 comprises a base 210 and a connection ring 220 connected to the base 210 and used for connecting with the fiber optic connector 100, the fiber optic connector 100 comprises an inner ring seat 110 used for connecting with the fiber optic adapter 200 and a locking sleeve 120, the inner ring seat 110 and the locking sleeve 120 are coaxially arranged and form an annular gap 130 with one end open, and the annular gap 130 is used for inserting the connection ring 220. At least one radially floating clip 140 is circumferentially installed on the inner wall of the locking sleeve 120, and the connecting ring 220 is provided with locking structures 1 which correspond to the clips 140 one by one and are locked with the clips 140. The optical fiber adapter 200 and the optical fiber connector 100 are axially inserted into each other, and the connection ring 220 is correspondingly inserted into the annular gap 130, so that the clips 140 are correspondingly connected to the corresponding locking structures 1.

Referring to fig. 1 and 2, the locking structure 1 includes a slot 221 disposed on the connection ring 220 and through which the clip 140 passes, and at least one circumferential side of the slot 221 is provided with a guide surface 222 for guiding the clip 140 and separating the clip 140 from the slot 221. The connection ring 220 is provided with a guide groove 223 at a side of the slot 221 facing the insertion direction of the optical fiber connector 100, a blocking locking block 224 is provided between the guide groove 223 and the slot 221, and when the clip 140 is inserted into the slot 221, the axial separation between the clip 140 and the locking block 224 is blocked by the mutual abutment between the locking block 224 and the clip 140, so that a sidewall of the locking block 224 facing the slot 221 and a side of the clip 140 abutting the locking block 224 are both configured as planes extending in the radial direction.

In a preferred embodiment, the bottom of the guide groove 223 and the bottom of the slot 221 are both located on the same curved surface, and when the clip 140 is located in the range of the guide groove 223 and the slot 221, the clip 140 is located in the original condition, i.e., is not pressed by the connection ring 220 and floats radially outward. The locking block 224 is provided with a guide surface 225 which is connected with the guide groove 223 and guides the catch 140 of the optical fiber connector to float radially outwards, and in the process of inserting the optical fiber connector 100 and the optical fiber adapter 200 in the axial direction, the catch 140 enters the guide groove 223 and floats radially outwards under the abutting and guiding action of the guide surface 225, so that in the process of inserting the optical fiber adapter 200 and the optical fiber connector 100 in the opposite direction, the catch 140 can smoothly enter the range of the clamping groove 221 beyond the area of the locking block 224 and then abuts against the catch 140 under the action of the locking block 224, and the optical fiber adapter 200 and the optical fiber connector 100 cannot be axially separated in the state.

Further, a separation groove 226 is disposed on the connection ring 220 and located on one side of the circumferential direction of the slot 221, through which the clip 140 of the optical fiber connector 100 passes, the separation groove 226 is axially communicated with one end of the connection ring 220 departing from the insertion direction of the optical fiber connector 100, so that the clip 140 of the optical fiber connector 100 is separated, a separation block 227 integrally connected to the connection ring 220 is disposed between the separation groove 226 and the slot 221, and the guide surface 222 is correspondingly disposed on the separation block 227. When the clip 140 is inserted into the slot 221, the clip 140 can be expanded radially outward by the guiding surface 222 and pass over the blocking block 227 and enter the disengaging groove 226 by rotating the locking sleeve 120, and the axial end of the disengaging groove 226 is communicated, so that the clip 140 can slide axially and disengage from the disengaging groove 226, and the fiber connector 100 and the fiber adapter 200 can be disengaged from each other. When there is only one disengaging groove 226 located on one side of the engaging groove 221, if there are multiple locking structures 1, it is necessary to ensure that each disengaging groove 226 is located on the same side of the corresponding engaging groove 221, and if the disengaging grooves 226 are correspondingly distributed on two sides of the engaging groove 221, it is necessary to ensure that all the locking structures 1 are distributed on the engaging ring 220 using the same structure. Moreover, according to the above structure, when the separation grooves 226 are correspondingly distributed on both sides of the card slot 221, no matter the locking sleeve 120 is rotated clockwise or counterclockwise, the locking block can be driven to abut against the corresponding separation block 227 and be separated from the card slot 221 under the action of the corresponding guide surface 222, so as to complete unlocking.

In the present embodiment, the guide surface 222 is configured in a circular arc shape, and one end of the guide surface 222 extends to one side of the card slot 221. While the other end of the guide surface 222 away from the catch groove 221 may or may not extend into the release groove 226, when the guide surface 222 extends into the release groove 226, the clip 140 located in the release groove 226 may be dropped back into the catch groove 221 by rotating the locking sleeve 120, whereas the clip 140 located in the release groove 226 may be blocked by the blocking block 227 and may be released from only one axial end of the release groove 226.

Based on the above-mentioned structure of the rotational unlocking, in the process of performing the blind mating and inserting of the optical fiber connector 100 and the optical fiber adapter 200, the axial correspondence between the clip 140 and the clip groove 221 cannot be satisfied exactly, and therefore, the groove width of the guide groove 223 gradually decreases along the inserting direction of the optical fiber connector 100, the width of the guide groove 223 connected to one side of the locking block 224 is substantially the same as the width of the clip groove 221 and the width of the clip 140, and the guide groove 223 is substantially in a shape of a horn along the inserting direction of the optical fiber connector 100. Therefore, during the process of blind mating and inserting the optical fiber connector 100 and the optical fiber connector, the clip 140 falls into the guiding groove 223 along with the approach of the two, and then, along with the continuation of the blind mating and inserting, the clip 140 is deviated under the guiding effect of the groove wall of the guiding groove 223 and is axially opposite to the slot 221 along with entering the tail section of the guiding groove 223.

On the basis, the locking block 224 has the limiting parts 228 located at both sides of the guiding surface 222, the limiting parts 228 are connected to the tail section of the guiding groove 223, and when the clip 140 is deviated under the action of the guiding groove 223 and abuts against the guiding surface 225, the clip 140 can still float and fall into the card slot 221 according to a predetermined track through the limiting of the limiting parts 228 at both sides.

Further, the width of the first section of the guiding groove 223 (i.e. the section into which the clip 140 is inserted) is greater than the width occupied by the disengaging grooves 226 at both sides of the engaging groove 221, and one side of the disengaging groove 226 near the first section of the guiding groove 223 has a gradually outwardly expanding inclined surface, so that the clip 140 can be better ensured to be smoothly disengaged from the disengaging grooves 226 under the structure.

Unlike the embodiment of the latch 1 described above, the latch 1 may be implemented by only one engaging groove 221, but a guide surface 222 for guiding the clip 140 needs to be provided on at least one side in the circumferential direction of the engaging groove 221. After the clip 140 is disengaged from the catching groove 221, the clip 140 is always in an outwardly floating state and is kept in abutment with the outer peripheral wall of the connection ring 220.

In addition, still be provided with supplementary locking structure 2 on the go-between 220, supplementary locking structure 2 is including setting up on go-between 220 and being located the wear-out groove 21 of one side of closure structure 1, is provided with the stopper 22 that is used for the checkpost 140 butt of with fiber connector 100 in order to hinder the checkpost 140 of fiber connector 100 to break away from on wear-out groove 21, and the width of wear-out groove 21 is far greater than the width of stopper 22 and the both sides of stopper 22 are used for supplying checkpost 140 axial to break away from. Furthermore, the number and distribution of the clips 140 on the locking sleeve 120 are set corresponding to the number and distribution of the corresponding stoppers 22 and slots 221. It should be noted that when the clip 140 located at the locking structure 1 falls into the slot 221, the slot 221 abuts against the stopper 22 to assist axial docking of the fiber connector 100 with the fiber adapter 200. When the locking sleeve 120 rotates, the clip 140 in the through groove 21 moves correspondingly and crosses the axial track of the stopper 22. Here, the side of the stopper 22 facing the insertion direction of the fiber optic connector 100 may also be configured as a slope to guide the clip 140, so that the clip 140 may be inserted into a corresponding position by a blind mating insertion.

As an alternative embodiment, two auxiliary locking structures 2 and two locking structures 1 are provided, and each auxiliary locking structure 2 is located between the two side locking structures 1, that is, the two locking structures 1 and the two auxiliary locking structures 2 are symmetrically located in the circumferential direction of the connecting ring 220, wherein the number of the locking structures 1 and the number of the auxiliary locking structures 2 can also be increased or decreased. However, due to the size of the clip 140, when the locking structures 1 and the auxiliary locking structures 2 are densely distributed in the circumferential direction of the connection ring 220, if the number of the locking structures 1 and the auxiliary locking structures 2 is increased, the size of the clip 140 is correspondingly reduced, which affects the connection strength between the fiber connector 100 and the fiber adapter 200 to some extent, and also increases the difficulty of designing the mold.

Referring to fig. 3, the inner annular seat 110 of the optical fiber connector 100 has an axially disposed cavity for receiving an optical fiber stripped of its sheath. One side of the locking sleeve 120 rotates on the inner ring seat 110, a plurality of deformation sheets 150 arranged at intervals axially extend on one end face of the locking sleeve 120, which is far away from the end face connected with the inner ring seat 110, and the clips 140 are integrally formed on the inner sides of the deformation sheets 150. The number of the hooks 140 and the distribution of the deformation pieces 150 are related to the number and the distribution of the secondary locking structures 2 and the locking structures 1. It should be noted that the clip 140 is not required to be attached to each shape-changing plate 150.

Further, the inner side surface of the deformation sheet 150 on which the clip 140 is mounted is configured to be stepped, the clip 140 is provided with a guide arc surface 141 along the opposite insertion direction of the optical fiber adapter 200, when the clip 140 abuts against the guide surface 225 and continues to be inserted oppositely, the clip 140 tends to move outwards under the common driving action of the guide surface 225 and the guide arc surface 141, so that the deformation sheet 150 connected with the clip 140 is forced to bend outwards, the bending point of the deformation sheet 150 is located near the connection position of the deformation sheet 150 and the locking sleeve 120, and when the external force is removed, the deformation sheet 150 can be reset under the deformation action of the material of the locking sleeve 120. Thus, from the overall structure of the locking sleeve 120, the clip 140 can move relative to each other in the radial direction (and also shift in the axial direction) under the action of the deformation pieces 150, that is, the clip 140 can float in the radial direction relative to the locking sleeve 120. Due to the structural characteristics of the deformable piece 150 and the locking sleeve 120, the clip 140 is difficult to deform in other directions relative to the locking sleeve 120, so that the locking sleeve 120 can deflect to a certain degree under the mutual cooperation of the clip 140 and the guide groove 223. Also, the length of the shape-changing strip 150 and the choice of material also determine the amount of force required to float the clip 140.

Referring to fig. 3 and 4, a plurality of connecting pieces 160 extend axially on the end surface of the locking sleeve 120 away from the deformable piece 150, a certain gap is also formed between adjacent connecting pieces 160, a clamping block 161 is integrally arranged on the inner side of each connecting piece 160, and a clamping ring groove 111 for clamping the clamping block 161 is arranged on the outer periphery of the inner ring seat 110. Wherein, the clamping block 161 can be constructed as a guiding structure of an inclined plane type towards one side of the extending direction of the connecting sheet 160, so that the locking sleeve 120 can be sleeved and clamped in the clamping ring groove 111 along the opposite inserting direction of the optical fiber adapter 200, but the other side of the clamping block 161 needs to be arranged in a plane form extending in the radial direction, so that when the optical fiber adapter 200 and the optical fiber connector 100 are axially pulled, the clamping block 161 is difficult to be separated from the clamping ring groove 111. However, due to the matching of the engaging pieces 161 and the engaging ring grooves 111, the locking sleeve 120 can rotate relative to the inner ring seat 110.

Referring to fig. 4 and 5, further, a protrusion 121 is disposed on an inner side wall of the locking sleeve 120, a limiting rib 112 is convexly disposed on an outer circumference of the inner ring seat 110, a circumferential section of the limiting rib 112 has a limiting region 113 for the protrusion 121 to penetrate through, the protrusion 121 can synchronously move in the limiting region 113 along with the rotation of the locking sleeve 120, and the stroke of the protrusion 121 is limited under the limiting effect of the limiting rib 112, wherein the limiting rib 112 and the bottom of the inner ring seat 110 form the aforementioned snap ring groove 111. Thus, the angle through which the locking sleeve 120 can be rotated is determined by the angle through which the protrusion 121 can move in the limiting region 113. As an alternative embodiment, when the disengaging grooves 226 are distributed on two circumferential sides of the slot 221, if the clips 140 are correspondingly inserted into the slot 221, the protrusions 121 are relatively located at the center of the limiting region 113, and as the locking sleeve 120 rotates left and right, the protrusions 121 will also rotate a certain amount relative to the limiting region 113, but the rotation angle is not larger than the central angle of the opening of the guiding groove 223 relative to the axis thereof. If the separation groove 226 is distributed on one side of the circumferential direction of the slot 221, and if the clip 140 correspondingly penetrates through the slot 221, the protrusion 121 may be located at one end of the limiting region 113 and abut against the limiting rib 112, and the locking sleeve 120 rotates to unlock the clip, so that the protrusion 121 slides towards the other end of the limiting region 113.

Referring to fig. 2 and 3, in order to ensure precise docking of the fiber optic adapter 200 with the fiber optic connector 100, it is necessary to ensure circumferential relative fixation of the fiber optic adapter 200 and the fiber optic connector 100 after docking. The connecting pipe 230 is coaxially disposed on the base 210 and located inside the connecting ring 220, the connecting pipe 230 is provided with a corresponding rotation stopping structure, and the connecting pipe 230 is connected to the inner ring seat 110 and is circumferentially fixed relatively by the rotation stopping structure. Taking the illustration as an example, the rotation stopping structure includes a stop plane 231 disposed on the outer wall of the connecting pipe 230, an abutting plane 114 abutting against the stop plane 231 is disposed on the inner wall of the inner ring seat 110, and the connecting pipe 230 is disposed on the inner ring seat 110 in a penetrating manner. It can be seen that there is one and only one state between the fiber optic adapter 200 and the fiber optic connector 100 that can achieve axial mating. As an alternative embodiment, a rotation stop structure may be implemented by connecting a C-shaped groove with a C-shaped sleeve.

Therefore, based on the embodiment that the disengagement grooves 226 are distributed on both sides of the circumferential direction of the slot 221, after the fiber adapter 200 and the fiber connector 100 are axially butted, in order to facilitate the blind mating, the locking sleeve 120 should rotate within a range that the clip 140 always falls within the range of the opening of the guiding groove 223, and the relative positions of the protrusion 121 and the limiting region 113 are correspondingly arranged, so as to ensure the rapidness of each blind mating.

Similarly, in the connection method of the fiber optic adapter 200 and the fiber optic connector 100, if the fiber optic connector 100 is rotated, the fiber optic adapter 200 will have the same tendency to rotate, and therefore the locking sleeve 120 and the fiber optic adapter 200 cannot be driven to rotate relatively, that is, in the case of rotating the fiber optic connector 100 only, the fiber optic connector 100 and the fiber optic adapter 200 cannot be disengaged.

Referring to fig. 6, an outer sheath 170 is fixed to one side of the inner ring seat 110 away from the opposite insertion direction of the fiber optic adapter 200 by ultrasonic welding, an inner sheath 180 is connected to a cavity inside the outer sheath 170 in a sliding manner, the inner side of the inner ring seat 110 is configured to be a step-shaped structure, the inner sheath 180 is limited in the outer sheath 170 by an inner step of the inner ring seat 110, the inner sheath 180 is axially and threadedly connected with a ferrule assembly 190 inserted into the inner ring seat 110, after the fiber optic connector 100 is connected with the fiber optic adapter 200, the ferrule assembly 190 is correspondingly inserted into and limitedly connected to the inside of the tube of the connection tube 230, and the shape inside the connection tube 230 is configured to match the external contour of the ferrule assembly 190. Be provided with interior spout 171 on the inboard cavity wall of oversheath 170, the shaft shoulder of inner sheath 180 wears to establish and slides and connect in interior spout 171, and the inner sheath 180 overcoat is equipped with compression spring 1100, and one side butt that insert core subassembly 190 was kept away from to compression spring 1100's one end and inner sheath 180's shaft shoulder to drive through compression spring 1100 makes insert core subassembly 190 have certain axial to the power of inserting. Further, an O-ring 1110 is embedded in the outer periphery of the shaft shoulder of the inner sheath 180, and the outer periphery of the O-ring 1110 abuts against the groove wall of the inner chute 171, so that sealing between the inner sheath 180 and the outer sheath 170 is achieved. The ferrule assembly 190 is used to axially connect the optical fibers with the cable jacket stripped.

Referring to fig. 6 and 7, a tail pipe 1120 is coaxially and threadedly connected to one side of the outer sheath 170, which is away from the inner ring base 110, and a tail sleeve 1130 is threadedly connected to one side of the tail pipe 1120, which is away from the outer sheath 170, wherein a plurality of jaws 1121 are circumferentially distributed at intervals at one end of the tail pipe 1120, which is away from the outer sheath 170, a rubber sleeve 1140 is enclosed in the centers of the jaws 1121, and the rubber sleeve 1140 is used for an optical fiber to pass through. The inner diameter surface of the tail sleeve 1130 is an inner conical surface matched with the jaws 1121, and the jaws 1121 are driven by the inner conical surface to be pressed inwards through the threaded connection of the tail sleeve 1130 and the tail pipe 1120, so that the rubber sleeve 1140 is pressed to deform centripetally. After the cable sheath with a certain length is stripped, the optical fiber is arranged in the tail pipe 1120 through the tail sleeve 1130 and the rubber sleeve 1140, and then arranged in the inner sheath 180 through the tail pipe 1120, and the optical fiber with the cable sheath stripped continues in the inner sheath 180 and is axially connected in the ferrule assembly 190.

Further, in order to achieve the sealing effect at the connection between the fiber connector 100 and the fiber adapter 200. The inner ring seat 110 is externally installed with a sealing ring 300, the sealing ring 300 is installed at one side near the bottom of the annular gap 130, and the outer diameter surface of the sealing ring 300 has at least three sealing lips 310 abutting and cooperating with the connection ring 220, and when the connection ring 220 is inserted into the annular gap 130, the sealing lips 310 first abut with the end surface of the connection ring 220.

After the optical fiber connector 100 is locked with the optical fiber adapter 200, the sealing ring 300 is pressed to deform. Referring to fig. 8, a cross-sectional view of a seal ring 300 formed substantially after compression is shown. The sealing lip far from the bottom of the annular gap 130 is deformed by extrusion and penetrates through the inner side wall of the connection ring 220 and keeps abutting against the connection ring 220, and the sealing lip near the bottom of the annular gap 130 expands outwards due to extrusion, so that the sealing lip abuts against the end face of the connection ring 220 and keeps sealing against the connection ring 220 and the bottom of the annular gap 130, a large sealing surface is formed, and a good sealing effect between the optical fiber connector 100 and the optical fiber adapter 200 is ensured.

Referring to fig. 9, when the fiber connector 100 is detached alone for use, the fiber connector 100 may be adapted to connect with a connector dust cap 400 to protect the ferrule assembly 190 of the fiber connector 100. The peripheral wall of the connector dust cap 400 is configured to have the same structure as the connection ring 220 of the fiber adapter 200, so that the connector dust cap 400 and the fiber connector 100 can be connected by the same structure, and the locking and unlocking methods thereof are also the same as those of the fiber connector 100 and the fiber adapter 200. In addition, a plastic cable 500 connected to the connector dust cap 400 may be interposed between the tail tube 1120 and the outer jacket 170, thereby enabling the combined mating between the connector dust cap 400 and the fiber connector 100.

Referring to FIG. 10, likewise, when the fiber optic adapter 200 is used by being removed alone, the fiber optic adapter 200 may also be adapted to receive an adapter dust cap 600 to protect the fiber optic adapter 200 from dust. The adapter dust cap 600 also has an inner ring seat 110 and a locking sleeve 120 that are the same as the optical fiber connector 100, and the inner peripheral wall of the adapter dust cap 600 is the inner ring seat 110. Similarly, the sealing ring 300 may be sleeved on the inner ring seat 110 to achieve a sealing connection between the adapter dust cap 600 and the fiber optic adapter 200. Therefore, the adapter dust cap 600 and the fiber optic adapter 200 can be connected by the same structure as described above, and the locking and unlocking methods are also the same as those of the fiber optic connector 100 and the fiber optic adapter 200.

Referring to fig. 11, the present embodiment also provides a fiber distribution box, on which the fiber optic adapter 200 is mounted. Specifically, fiber optic adapter 200 may be mounted to a fiber distribution cabinet to serve as a docking device for the optical fibers within the fiber distribution cabinet to fiber optic connectors 100. In this case, one end of the fiber optic adapter 200 would be configured as a connection structure to mate with the fiber optic connector 100, while the other end would be configured as a structure to connect with a fiber distribution box. For example, the connection holder 240 is fixed to the base 210 by ultrasonic welding, the connection holder 240 is inserted into a corresponding connection hole of the fiber distribution box, an outer diameter surface of the connection holder 240 is configured to be a screw type structure, and the inside is configured to be a form of fitting a connector inside the fiber distribution box, for example, configured to be an SC type connection structure. The connecting base 240 is connected with the locking ring 250 through threads after penetrating through the thread through hole on the fiber distribution box, and then the connection between the optical fiber adapter 200 and the fiber distribution box is realized through the mutual matching of the locking ring 250 and the connecting base 240.

When the optical fiber adapter 200 is not required to be connected to the optical fiber connector 100, it may be correspondingly connected to one adapter dust cap 600, and when the optical fiber connector 100 is required to be connected, only the adapter dust cap 600 needs to be detached and inserted into the corresponding optical fiber connector 100. When the fiber optic connector 100 is removed from the fiber optic adapter 200, it is necessary to connect the corresponding adapter dust cap 600 and connector dust cap 400 to protect them from dust as quickly as possible.

Referring to fig. 12, in addition, when the fiber optic adapter 200 is not applied to a distribution box, the fiber optic adapter 200 may also be configured in a structure in which the fiber optic connectors 100 are connected at both ends.

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 optical fiber adapter is characterized by comprising a connecting ring (220), wherein the connecting ring (220) is used for being inserted into an annular gap (130) between an inner ring seat (110) of an optical fiber connector (100) and a locking sleeve (120), the connecting ring (220) is circumferentially provided with a plurality of locking structures (1), each locking structure (1) comprises a clamping groove (221) formed in the connecting ring (220), each clamping groove (221) is used for allowing a clip (140) which is radially and floatingly mounted on the locking sleeve (120) of the optical fiber connector (100) to penetrate through, and at least one circumferential side, positioned on each clamping groove (221), of the connecting ring (220) is provided with a guide surface (222) for guiding the clip (140) to be separated from the clamping groove (221);

a separation groove (226) for allowing a clamp (140) of the optical fiber connector (100) to penetrate is formed in the connection ring (220) and located on one side of the circumferential direction of the clamping groove (221), the separation groove (226) is axially communicated with one end, deviating from the insertion direction of the optical fiber connector (100), of the connection ring (220) so that the clamp (140) of the optical fiber connector (100) can be separated, a separation block (227) is arranged between the separation groove (226) and the clamping groove (221), and the guide surface (222) is arranged on the separation block (227);

be provided with on go-between (220) and be located draw-in groove (221) towards guiding groove (223) on one side of fiber connector (100) direction of insertion, be provided with locking piece (224) of cutting off guiding groove (223) and draw-in groove (221) on go-between (220), the groove width of guiding groove (223) reduces along the direction of insertion interval of fiber connector (100) gradually.

2. The fiber optic adapter of claim 1, wherein: the locking block (224) has a stopper portion (228) on both sides of the guide surface (225).

3. The fiber optic adapter of claim 1, wherein: two locking structures (1) are symmetrically arranged on the circumferential direction of the connecting ring (220).

4. The fiber optic adapter of claim 1, wherein: the optical fiber connector is characterized by further comprising a penetrating groove (21) which is located on the connecting ring (220) and located on one side of the locking structure (1), wherein a limiting block (22) which is used for being abutted against a clamp (140) of the optical fiber connector (100) to block the clamp (140) of the optical fiber connector (100) to break away from is arranged on the penetrating groove (21).

5. A fiber optic adapter according to any one of claims 1-4, wherein: the optical fiber adapter (200) is connected with an adapter dust cover (600), the adapter dust cover (600) is provided with a locking sleeve (120), the locking sleeve (120) is rotatably connected to the connecting ring (220), and the inner side of the locking sleeve (120) is provided with a clamp (140) which is installed in a radial floating mode and is used for being clamped in the clamping groove (221).

6. A fiber optic adapter according to any one of claims 1-4, wherein: the optical fiber connector also comprises a connecting pipe (230) positioned on the inner side of the connecting ring (220) and a rotation stopping structure arranged on the connecting pipe (230), wherein the connecting pipe (230) is used for being connected with an inner ring seat (110) of the optical fiber connector (100) and is circumferentially and relatively fixed with the inner ring seat (110) through the rotation stopping structure.

7. An optical fiber connector, comprising:

an inner ring seat (110) having an axially disposed cavity for receiving an optical fiber;

the optical fiber adapter comprises a locking sleeve (120), one end of the locking sleeve (120) is rotatably connected to the outside of an inner ring seat (110), an annular gap (130) which is provided with an opening at one end and used for inserting a connecting ring (220) of the optical fiber adapter (200) is arranged between the inner ring seat (110) and the locking sleeve (120), and at least one clip (140) which floats along the radial direction is arranged on the circumferential direction of the inner wall of the locking sleeve (120);

the clip (140) is used for being inserted into a clamping groove (221) of a connecting ring (220) of the optical fiber adapter (200), and can be guided to be separated from the clamping groove (221) through a guide surface (222) on one circumferential side of the clamping groove (221) of the optical fiber adapter (200) and slide into a separation groove (226) of the optical fiber adapter (200);

wherein, during the process of inserting the optical fiber connector (100) into the optical fiber adapter (200), the clip (140) can drive the locking sleeve (120) to rotate under the guidance of the guide groove (223) of the optical fiber adapter (200).

8. The fiber optic connector of claim 7, wherein: the axial one end of lock sleeve (120) has a plurality of shape change pieces (150), and adjacent have the interval between shape change piece (150), checkpost (140) fixed mounting is in the inboard of shape change piece (150).

9. The fiber optic connector of claim 7, wherein: the side of the clip (140) facing away from the installation direction of the fiber optic adapter (200) is configured as a radially extending flat surface.

10. The fiber optic connector of claim 7, wherein: the outer periphery of interior ring seat (110) is provided with joint annular groove (111), the axial one end of lock cover (120) has a plurality of connection pieces (160), and is adjacent have the interval between connection piece (160), joint piece (161) of joint in joint annular groove (111) are installed to the inboard of connection piece (160).

11. The fiber optic connector of claim 7, wherein: the inner side wall of the locking sleeve (120) is provided with a convex block (121), the outer periphery of the inner ring seat (110) is convexly provided with a limiting rib (112), and one section of the circumferential direction of the limiting rib (112) is provided with a limiting area (113) for the convex block (121) to penetrate through.

12. An optical fibre connector as claimed in any one of claims 7 to 11 wherein: optical fiber connector (100) are connected with a connector shield (400), connector shield (400) have wear to establish go-between (220) in annular gap (130), be provided with draw-in groove (221) that supply checkpost (140) joint on go-between (220), the at least one side of circumference of draw-in groove (221) is provided with guide face (222) that guide checkpost (140) break away from draw-in groove (221).

13. An optical fiber connector is characterized by comprising an optical fiber connector (100) and an optical fiber adapter (200) which are coaxially butted,

the optical fiber connector (100) comprises:

an inner ring seat (110) having an axially disposed cavity for receiving an optical fiber,

one end of the locking sleeve (120) is rotatably connected outside the inner ring seat (110), an annular gap (130) with an opening at one end is formed between the inner ring seat (110) and the locking sleeve (120), and at least one clip (140) which floats along the radial direction is arranged on the circumferential direction of the inner wall of the locking sleeve (120);

the fiber optic adapter (200) comprises:

the optical fiber connector comprises a connecting ring (220), wherein the connecting ring (220) is used for being inserted into an annular gap (130) of an optical fiber connector (100), locking structures (1) which correspond to the clips (140) one by one are arranged on the connecting ring (220), each locking structure (1) comprises a clamping groove (221) which is arranged on the connecting ring (220), the clips (140) penetrate through the clamping grooves (221), and at least one side of the connecting ring (220) in the circumferential direction of the clamping groove (221) is provided with a guide surface (222) which guides the clips (140) to be separated from the clamping grooves (221);

14. The optical fiber connector according to claim 13, wherein: interior ring seat (110) installs outward and seals circle (300), sealing circle (300) external diameter face has at least three and go up ring (220) butt and complex sealing lip limit (310), fiber connector (100) with optic fibre adapter (200) closure back, sealing lip limit (310) butt respectively on the terminal surface and the inner wall of go up ring (220).

15. A fiber distribution cabinet, characterized in that a fiber optic adapter (200) is mounted on the fiber distribution cabinet, the fiber optic adapter (200) comprising a fiber optic adapter according to any one of claims 1-6.