CN214474099U - Optical fiber connector - Google Patents

Abstract

The application relates to an optical fiber connector, including: an end housing for connection with a receiver; the tail shell is connected with the end shell and used for clamping and fixing the optical cable; the end connecting core is arranged in the end shell and used for clamping and fixing the optical fiber; wherein, the termination core includes casing, elasticity clamping piece and locking lid, the casing axial is seted up and is supplied the through-hole that optic fibre runs through, the casing radially is seted up and is supplied the installation of elasticity clamping piece and with the assembly groove of through-hole intercommunication, the elasticity clamping piece has elastic connection's first lamellar body and second lamellar body, have the tight passageway of clamp that supplies optic fibre to run through between first lamellar body and the second lamellar body, the opening that fits the assembly groove is covered to the locking lid, just the locking is covered and is provided with the driving surface that the first lamellar body of drive and second lamellar body are close to each other in order to press from both sides tight optic fibre. This application can satisfy optic fibre required structural strength when connecting, also can repeated dismantlement simultaneously, and the assembly is also comparatively simple with the dismantlement, and efficiency is higher.

Description

Optical fiber connector

Technical Field

The present application relates to the field of connectors, and more particularly, to an optical fiber connector.

Background

The optical fiber connector is a device for realizing movable connection between optical fibers so as to realize repeatable plugging and unplugging, and can couple optical energy of a transmitting optical fiber into a receiving optical fiber to the maximum extent. Conventional optical fiber connectors may be classified into FC, LC, SC, etc. according to specific structures.

Optical fibers are often integrated into optical cables during actual transmission by applying a coating to the outside of the optical fiber to protect the optical fiber and then coating the outside with a sheath to further protect the optical fiber. When the optical cable is actually connected to the optical fiber connector, the cable skin needs to be pulled apart, and then the coating with a fixed length is stripped to expose the optical fiber, and the optical signal transmission between the optical fibers is realized through the precise butt joint of the end faces of the optical fibers at two ends during the actual connection. Therefore, when the optical fiber connector is assembled, not only a section coated with the cable sheath needs to be fixed to meet the connection strength between the optical cable and the optical fiber connector, but also the optical fiber needs to be fixed to ensure that the thin optical fiber meets the strength requirement when the end faces are butted.

SUMMERY OF THE UTILITY MODEL

In order to satisfy the structural strength required when optical fibers are connected, the present application provides an optical fiber connector.

The application provides an optical fiber connector adopts following technical scheme:

an optical fiber connector comprising:

an end housing for connection with a receiver;

the tail shell is connected with the end shell and used for clamping and fixing the optical cable; and the number of the first and second groups,

the end connection core is arranged in the end shell and used for clamping and fixing the optical fiber;

wherein, the termination core includes casing, elasticity clamping piece and locking lid, the casing axial is seted up and is supplied the through-hole that optic fibre runs through, the casing radially is seted up and is supplied the installation of elasticity clamping piece and with the assembly groove of through-hole intercommunication, the elasticity clamping piece has elastic connection's first lamellar body and second lamellar body, have the tight passageway of clamp that supplies optic fibre to run through between first lamellar body and the second lamellar body, the opening that fits the assembly groove is covered to the locking lid, just the locking is covered and is provided with the driving surface that the first lamellar body of drive and second lamellar body are close to each other in order to press from both sides tight optic fibre.

Through adopting above-mentioned technical scheme, when adopting this kind of fiber connector to connect optic fibre, not only come to carry out the centre gripping to the optical cable through the tail-shell, still come to wear to locate the optic fibre of pressing from both sides in the tight passageway tightly through the mode that the first lamellar body of locking lid drive is close to each other, thereby make the holistic fixed strength of optic fibre can satisfy the structural strength when the terminal surface docks, thereby make this kind of fiber connector loss in transmission process less, satisfy the requirement of transmission. In addition, the free motion of optic fibre and elasticity clamping piece can be resumeed through the dismantlement to the locking cover to make the optical cable can freely dismantle with fiber connector, this kind of mounting means simple structure can accomplish the clamping to elasticity clamping piece and optic fibre through the radial pressure application at the casing simultaneously, and the person of facilitating the use carries out the application of force.

Preferably, the first slice body includes butt portion and distributes in the spacing portion of butt portion one side along the axis direction of termination core, just be provided with spacing buckle on being located the lateral wall of assembly groove on the casing, spacing portion and butt portion form the joint groove that supplies spacing buckle joint within a definite time.

Through adopting above-mentioned technical scheme, this kind of mode of setting can carry out relatively fixed between elastic clamping piece and the casing to when making the locking lid open, the elastic clamping piece can not break away from the assembly groove, also can make optic fibre wear to establish the difficult not hard up of elastic clamping piece in-process and break away from.

Preferably, the locking cover is provided with at least one locking buckle, and the shell is provided with a locking clamping groove for buckling the locking buckle.

Through adopting above-mentioned technical scheme, the connected mode through the buckle formula makes things convenient for the installation of locking lid, also can guarantee simultaneously that the locking lid can install to fixed position department to make the clamping-force of elasticity clamping piece to optic fibre can satisfy the requirement.

Preferably, be provided with the opening that supplies locking cover assembly to casing on the end shell, the end shell deviates from one side of open-ended and is provided with the socket that communicates with the locking draw-in groove and the equidirectional extension.

Through adopting above-mentioned technical scheme, this kind of setting can be dismantled locking lid from the end shell through the opposite side top at the end shell and move the locking buckle, simple structure, the simple operation.

Preferably, the end shell is seted up towards one side of tail shell and is supplied the termination core to wear to establish and the chamber that slides, the termination core is provided with the elastic component towards one side of tail shell and is located the chamber that slides, the elastic component forces the termination core is towards the trend that the direction of keeping away from the tail shell slided all the time.

By adopting the technical scheme, the arrangement can always apply certain axial loading force to the terminating core during connection, so that the end face of the optical fiber can be tightly attached to the corresponding contact surface.

Preferably, the tail shell includes that the tail presss from both sides and the tail lid, tail clamp and end shell fixed connection, the tail presss from both sides including the connecting seat and connect on the connecting seat and to two clamping pieces that extend to the direction of keeping away from the end shell, the clamping piece is used for the fixed optical cable of centre gripping, the internal diameter of tail lid reduces along the direction of keeping away from the end shell gradually, the tail lid cover is located two clamping pieces outer and with connecting seat threaded connection, the clamping piece is close to with buckling each other with the inner wall contact of tail lid, one side that the clamping piece is close to each other is provided with the locating piece that supplies the cable skin section butt of optical cable.

Through adopting above-mentioned technical scheme, when tail cover and connecting seat threaded connection, the clamping piece is close to each other through the effect at the inside wall of tail cover down, thereby it is fixed to carry out the centre gripping with the optical cable that is located between the clamping piece of both sides, this kind of mode simple structure that sets up, easy to assemble, it is also comparatively convenient to dismantle, can reuse many times, and because optic fibre stretches out and need be a constant volume in the volume of terminating the core, consequently can strip the cable skin of quantitative length at the in-process of peeling off the optical cable, and can be convenient send into the volume of terminating the core with optic fibre through the setting of locating piece and prescribe a limit, thereby improve the installation effectiveness.

Preferably, one side that the tail shell was kept away from to the end shell is provided with the visor, the one end of visor is provided with the protection chamber that supplies the end shell to wear to establish, be provided with the elasticity block tongue on the lateral wall of end shell, the elasticity block tongue is fixed with the visor joint.

Through adopting above-mentioned technical scheme, this kind of setting makes can protect the link of end shell, avoids causing the damage to the link when external collision. Meanwhile, the optical fiber connector can not be easily impacted by external force and fall off in the transportation process through the clamping and fixing mode of the elastic clamping tongue and the protective cover, and the connection stability is high.

Preferably, the both sides of elasticity block tongue are provided with the locking piece, be provided with the block tongue chamber that supplies elasticity block tongue to wear to establish on the protective cover, be provided with the intercommunication groove that supplies the locking piece to wear to establish and slide along the degree of depth direction in protection groove on the both sides cell wall in block tongue chamber, be provided with on the lateral wall in intercommunication groove and supply the locking piece to wear to establish locking groove with intercommunication groove intercommunication, the elasticity block tongue hinders the locking piece breaks away from to the intercommunication groove from locking groove.

By adopting the technical scheme, after the protective cover is connected with the end shell, the locking block can be kept in the locking groove by the elastic force of the elastic clamping tongue, so that the locking block can be prevented from rebounding, and the protective cover and the end shell can be unlocked after the elastic clamping tongue is pressed by external force, so that the protective cover can be detached from the end shell.

Preferably, one end of the protective cover is provided with a plug-in sheet which is arranged in the socket in a penetrating way and is used for ejecting the locking cover from the opening.

Through adopting above-mentioned technical scheme, this kind of setting has made things convenient for the dismantlement between locking lid and the protective housing, need not to use extra instrument or spare part to dismantle locking lid, and is comparatively convenient.

Preferably, the protective cover is flexibly connected with a top pressure plate, the top pressure plate is provided with a top pressure block, and the top pressure plate is bent to enable the top pressure block to be abutted against the locking cover.

Through adopting above-mentioned technical scheme, can make the roof pressure board buckle to the direction of installing port through buckling the roof pressure board, at the in-process of installing locking lid, need not the user and stretch into the installing port with the finger and can assemble locking lid to terminating core on, through the butt of top briquetting and locking lid, the rethread user can accomplish the assembly with locking lid application of force, and efficiency is higher, convenient operation.

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

1. the optical fiber has high connection strength and high transmission reliability;

2. the protective cover and the end shell have high connection strength and are not easy to fall off;

3. the disassembly and the assembly of the locking cover can be realized through the structural design corresponding to the protective cover.

Drawings

Fig. 1 is a schematic structural diagram of an optical fiber connector.

Fig. 2 is an exploded view of the fiber optic connector.

Fig. 3 is an exploded schematic view of the tail shell.

FIG. 4 is an exploded view of the tail shell, end shell and termination core.

Fig. 5 is a schematic view of the assembly of the termination core and the end housing.

Fig. 6 is a cross-sectional view of the termination core with the locking cap unassembled.

Fig. 7 is a cross-sectional view of the termination core after the locking cap is assembled.

FIG. 8 is an exploded view of the termination core.

Fig. 9 is a schematic view of a connecting structure of the housing and the elastic clip.

Fig. 10 is a schematic structural view of the end shell and the protective cover when they are connected.

Fig. 11 is a schematic structural diagram of the protective cover.

Fig. 12 is a schematic view of the use state of the protection cover for detaching the locking cover.

Description of reference numerals: 1. an end shell; 2. a tail shell; 3. the core is connected with the end; 4. a protective cover; 5. an elastic clamping tongue; 21. a tail clip; 22. a tail cover; 211. a connecting seat; 212. a clip; 213. a wire passing hole; 214. positioning blocks; 215. a clamping block; 216. connecting grooves; 11. a buckling block; 217. a fastening groove; 12. a sliding cavity; 13. a connecting port; 31. a housing; 32. an elastic clip; 33. a locking cover; 311. a through hole; 312. assembling a groove; 321. a first sheet body; 322. a second sheet body; 313. a limiting groove; 323. a clamping channel; 331. a drive face; 3211. an abutting portion; 3212. a limiting part; 3213. a clamping groove; 314. a limiting buckle; 332. locking the buckle; 333. a limiting sheet; 315. locking the clamping groove; 316. a limiting groove; 14. an opening; 15. a socket; 34. a sleeve; 35. a guide shaft; 36. an elastic member; 315. mounting grooves; 41. a protection cavity; 42. a guard post; 43. a protective groove; 51. a locking block; 44. a latch cavity; 45. a communicating groove; 46. a locking groove; 47. inserting sheets; 48. a top pressing plate; 49. pressing the block; 410. and (7) installing the opening.

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 and 2, the optical fiber connector includes an end shell 1, a tail shell 2, a terminating core 3 and a protective cover 4, wherein one end of the end shell 1 far away from the tail shell 2 is a connecting end for connecting with a receiver, and an optical cable is inserted into the optical fiber connector through the direction from the tail shell 2 to the end shell 1 and is kept fixed relative to the optical fiber connector through the terminating core 3 and the tail shell 2. The radial outer side of the end shell 1 is provided with an elastic latch 5 for configuring the optical fiber connector into an LC form, the protective cover 4 is connected to the end shell 1 and sleeved at one end of the end shell 1 far away from the tail shell 2, and the protective cover 4 is clamped and fixed with the elastic latch 5 to prevent the relative separation of the protective cover 4 and the end shell 1.

Referring to fig. 2 and 3, the tail housing 2 includes a tail clip 21 fixed relatively to the end housing 1 and a tail cover 22 connected to the tail clip 21, the tail clip 21 includes a connection seat 211 and two clips 212 connected to the connection seat 211 and extending in a direction away from the end housing 1, a gap for passing an optical cable is formed between the two clips 212, and a wire passing hole 213 for passing an optical fiber is formed in the connection seat 211. The positioning blocks 214 are integrally arranged on the sides of the two clamping pieces 212 close to each other, and the clamping blocks 215 are arranged at the ends of the clamping pieces 212 far away from the connecting seat 211. When the cable is stripped of the outer sheath, the optical fiber is connected to the terminating core 3 through the wire passing hole 213, but the section of the cable sheath is limited by abutting against the positioning block 214, and at this time, the complete cable is located between the clamping blocks 215 at both sides. The stripping of the optical cable can be realized by adopting a corresponding auxiliary tool, and the exposed optical fiber needs to be fixed in length after being stripped, so that when the cable sheath section of the optical cable is abutted against the positioning block 214, the length of the optical fiber extending into the termination core 3 can be always a constant value.

The tail cap 22 is fixed with the connecting seat 211 through a threaded connection mode, and the inner wall of the tail cap 22 is gradually reduced along the direction bore away from the end shell 1. Therefore, when the tail cap 22 is connected to the connector holder 211, the clamping pieces 212 abut against the inner wall of the tail cap 22 and approach each other under the guiding action of the inner wall of the tail cap 22, so that the distance between the clamping blocks 215 and the distance between the positioning blocks 214 are correspondingly reduced, thereby increasing the clamping force of the optical cable passing therethrough.

Referring to fig. 2 and 4, a connecting groove 216 for the end shell 1 to pass through is provided on one side of the connecting seat 211 of the tail shell 2 facing the end shell 1, a fastening block 11 is integrally provided on a portion of the outer side wall of the end shell 1 and located through the connecting groove 216, and a fastening groove 217 for the fastening block 11 to fasten is provided on the tail shell 2. In a preferred embodiment, the fastening blocks 11 are disposed in a plurality in the circumferential direction of the end shell 1, and the distribution of the fastening grooves 217 corresponds to the distribution of the fastening blocks 11 and corresponds to one another. During assembly, the buckling block 11 is forced to correspondingly penetrate into the buckling groove 217 through the deformation of the end shell 1 and the connecting seat 211, so that the end shell 1 and the tail shell 2 are connected with each other.

Referring to fig. 4 and 5, a sliding cavity 12 for the end connection core 3 to penetrate and slide is formed in one side of the end shell 1 facing the tail shell 2, a connecting port 13 communicated with the sliding cavity 12 is formed in one side of the end shell away from the tail shell 2, and the connecting port 13 enables the end connection core 3 to be axially exposed at the connecting end. Preferably, the cross section of the termination core 3 is substantially square, i.e. the termination core 3 needs to be circumferentially confined in the end housing 1, and correspondingly, the cross section of the sliding cavity 12 is configured to match the shape of the termination core 3. And the side of the sliding cavity 12 facing the connecting port 13 has a shoulder against which the termination core 3 axially abuts, i.e. the termination core 3 can slide in the sliding cavity 12 but cannot be detached from the end housing 1 at the connecting port 13.

The end connection core 3 comprises a shell 31, an elastic clamping piece 32 and a locking cover 33, wherein the shell 31 is axially provided with a through hole 311 for the optical fiber to penetrate through, the shell 31 is radially provided with an assembling groove 312 for the elastic clamping piece 32 to be installed and communicated with the through hole 311, the elastic clamping piece 32 is installed in the assembling groove 312 in a limiting way and is relatively fixed with the shell 31, and the locking cover 33 covers the opening of the assembling groove 312. After the optical fiber passes through the housing 31 through the through hole 311, the optical fiber and the elastic clip 32 are relatively fixed by the mutual engagement of the elastic clip 32 and the locking cover 33, so that the optical fiber and the termination core 3 are integrally relatively fixed.

Referring to fig. 4 and 6, in particular, resilient clip 32 is formed entirely of a material having a relatively high ductility, which may be aluminum or anodized aluminum. The elastic clip 32 includes a first body 321 and a second body 322 which are elastically connected, preferably, the elastic clip 32 is integrally formed by stamping, the middle of the aluminum plate is stamped to form an elastic V-shaped structure, and two sides of the stamped portion are formed as the first body 321 and the second body 322. When the optical fiber passes through the housing 31 and the elastic clip 32, the optical fiber passes through the elastic clip 32 through the gap between the first body 321 and the second body 322.

As shown in fig. 6, the bottom of the assembling groove 312 has a limiting groove 313 matched with the bending part of the elastic clip 32, and when the locking cover 33 is not assembled with the housing 31, the first blade 321 and the second blade 322 will naturally open, and in order to roughly limit the traveling track of the optical fiber, a clamping channel 323 for the optical fiber to pass through is provided between the first blade 321 and the second blade 322, and at this time, the clamping channel 323 can freely pass through the optical fiber. As the first sheet 321 and the second sheet 322 approach each other, the cross-sectional area of the clamping channel 323 decreases, and a certain circumferential pressure is applied to the optical fiber, thereby achieving the relative fixation of the optical fiber and the elastic clip 32.

Referring to fig. 7, correspondingly, one side of the locking cover 33 facing the elastic clamping piece 32 is provided with driving surfaces 331 for driving the first blade 321 and the second blade 322 to approach each other, a distance between the two driving surfaces 331 is gradually increased along a direction of approaching the elastic clamping piece 32, and the two driving surfaces 331 respectively correspond to the first blade 321 and the second blade 322 on two sides one by one. When the locking cap 33 is pressed down and pressed into the mounting groove 312, the upper ends of the first blade 321 and the second blade 322 first abut against the two driving surfaces 331 of the locking cap 33, and then as the locking cap 33 is pressed down continuously, the first blade 321 and the second blade 322 are forced to approach each other by the driving surfaces 331, so as to reduce the included angle formed between the first blade 321 and the second blade 322 to clamp the optical fiber passing through the two. When the locking cover 33 is removed, the first sheet 321 and the second sheet 322 may be restored to the natural open state due to the loss of the external restriction by the ductility of the elastic clip 32 itself, so that the optical fiber may be restored to the relative limit with the elastic clip 32.

As an example of the illustrated structure, as a preferred embodiment, the first blade 321 and the second blade 322 are provided with symmetrical half-arc grooves to cooperate with each other to form the clamping channel 323, but as an alternative embodiment, the clamping channel 323 may not be symmetrically arranged along the symmetry axis of the first blade 321 and the second blade 322.

Referring to fig. 8 and 9, the first sheet 321 includes an abutting portion 3211 and a position-limiting portion 3212 distributed on one side of the abutting portion 3211 along the axial direction of the termination core 3, and a height difference is formed between the position-limiting portion 3212 and the abutting portion 3211 to form a snap groove 3213. The housing 31 is provided with a limiting buckle 314 on the side wall of the assembling groove 312, and when the elastic clip 32 is installed in the assembling groove 312, the limiting buckle 314 is correspondingly inserted into the buckle groove 3213 formed between the abutting portion 3211 and the limiting portion 3212. Meanwhile, the second sheet 322 may also adopt a similar structural design as the first sheet 321, and is not described herein again.

In order to realize the relative fixation between the locking cover 33 and the housing 31, the locking cover 33 is provided with at least one locking buckle 332 and at least one limiting sheet 333, the housing 31 is provided with a locking slot 315 for buckling the locking buckle 332 and a limiting slot 316 for penetrating the limiting sheet 333, and the limiting slot 316 and the locking slot 315 both penetrate through the housing 31 along the direction departing from the locking cover 33. When the locking cover 33 is pressed down into the fitting groove 312, the locking clip 332 is inserted into the corresponding locking slot 315 to fix the locking clip 332 and the locking slot 315 relatively. As an optional embodiment, the locking buckles 332 and the limiting pieces 333 are respectively distributed on two sides of the locking cover 33 along the penetrating direction of the optical fiber, but the number of the limiting pieces 333 and the locking buckles 332 is different from the distribution mode on two sides of the locking cover 33, so that the locking cover 33 has a certain fool-proof effect during the installation process, and the locking cover 33 can be prevented from being assembled into the assembly groove 312 in the preset assembly direction.

Referring back to fig. 5 in conjunction with fig. 10, the end shell 1 is provided with an opening 14 communicating with the slide chamber 12 in the radial direction for fitting the lock cover 33 to the housing 31, and when the housing 31 of the termination core 3 abuts against the chamber wall on the side of the slide chamber 12 toward the connection port 13, the opening 14 faces the lock cover 33. One side of the end shell 1, which is away from the opening 14, is provided with a socket 15 which is communicated with the locking slot 315 and extends in the same direction, and the socket 15 is in contact with the locking buckle 332 in the locking slot 315 and applies a certain pressure, so that the locking buckle 332 and the shell 31 can be forced to be separated from each other, and the locking cover 33 is further separated from the opening 14 out of the end shell 1.

Referring back to fig. 4 in conjunction with fig. 8, the housing 31 of the termination core 3 is provided with a ferrule 34 through which the optical fiber passes and a guide shaft 35, respectively, in the axial direction, and the ferrule 34 is located on the side of the housing 31 facing the connection port 13 and passes through the connection port 13 to partially protrude outside the end housing 1. An elastic piece 36 is arranged in the sliding groove of the end shell 1 and between the end connection core 3 and the tail shell 2, and the elastic piece 36 forces the end connection core 3 to always slide in the direction far away from the tail shell 2. In a preferred embodiment, the elastic member 36 is a compression spring, the compression spring is sleeved on the guide shaft 35, two ends of the compression spring are respectively abutted with the tail shell 2 and the shell 31 of the termination core 3, and the maximum length that the compression spring can recover is the maximum length when the termination core 3 is abutted with the cavity wall of the sliding cavity 12 facing the connection port 13 due to the limit of the connection port 13 to the termination core 3. Therefore, when the optical fiber connector is connected, the termination core 3 is always applied with an axial loading force satisfying the butt joint requirement by the elastic member 36, thereby ensuring the stability of the connection.

The ferrule 34 may be made of a material such as ceramic, glass, plastic, or metal, and is used to support an optical fiber inserted and secured therein. In a preferred embodiment, the sleeve 34 is made of a ceramic material. And the optical fibers may extend slightly beyond the end face of ferrule 34 or be coplanar with the end face of ferrule 34 after the fiber optic connector is connected to the fiber optic cable. The housing 31 is provided with a mounting groove 315 for mounting the sleeve 34, and the sleeve 34 is inserted into the mounting groove 315 and fixed to the housing 31 by epoxy resin or other adhesive. The sleeve 34 may be fixed to the housing 31 before shipment or may be fixed again at the time of on-site installation.

Referring to fig. 10 and 11, a protection cavity 41 through which the connection end of the end housing 1 passes is formed in the protection cover 4, a protection column 42 for protecting the casing 34 is formed on the protection cover 4 and located at the bottom of the protection cavity 41, a protection groove 43 through which the casing 34 passes is formed in the protection column 42, and the protection column 42 is sleeved on the casing 34 and partially passes through the connection port 13. The elastic clamping tongue 5 is integrally provided with locking blocks 51 along two sides of the assembly direction of the protective cover 4 and the end shell 1, a clamping tongue cavity 44 for the elastic clamping tongue 5 to penetrate and be communicated with the protection cavity 41 is arranged on the protective cover 4, a communicating groove 45 for the locking blocks 51 to penetrate and slide is formed in the two sides of the clamping tongue cavity 44 and along the depth direction of the protection groove 43, and a locking groove 46 communicated with the communicating groove 45 and for the locking blocks 51 to penetrate is arranged on the side wall of the communicating groove 45. Wherein, through pressing the elastic latch 5, the elastic latch 5 can be bent towards the direction of attaching to the end shell 1, and after the external force is removed, the elastic latch 5 will rebound to the original state under the self ductility action, therefore, through pressing the elastic latch 5, the locking block 51 can be adapted with the communicating groove 45, and can slide towards the bottom of the communicating groove 45 along with the assembly of the end shell 1 and the protective cover 4. At this time, if the external force is removed to press the elastic latch 5, the locking block 51 moves in the same direction under the action of the elastic latch 5 and abuts against the groove wall of the communicating groove 45, and when the locking block 51 moves to the projection of the locking groove 46 on the communicating groove 45, the locking block 51 spontaneously penetrates into the locking groove 46 to block the relative movement between the end shell 1 and the protective cover 4.

Therefore, if the elastic latch 5 is not pressed by an external force, the locking block 51 is always inserted into the locking groove 46 by the elastic latch 5, so that the protective cover 4 and the end shell 1 have a better connection strength and are not easily separated.

With reference to fig. 11 and 12, in addition, in order to increase the functional abundance of the protective cover 4, the end of the protective cover 4 facing the end housing 1 is provided with a tab 47 for detaching the locking cover 33, the cross section of the tab 47 being similar to the cross section of the socket 15 and being freely slidable in the socket 15. When the locking cover 33 needs to be detached, the protection cover 4 is detached from the end shell 1, the insertion pieces 47 are opposite to the corresponding insertion holes 15, then the protection cover 4 is pushed to enable the insertion pieces 47 to be abutted against the locking buckles 332, and the locking buckles 332 lose the limiting state with the shell 31 under the action of external force along with the continuous pushing of the protection cover 4, so that the locking cover 33 can be detached from the shell 31. It should be noted that the number of the insertion pieces 47 and the distribution pattern thereof on the protection cover 4 are the same as the distribution of the insertion holes 15, i.e. the insertion pieces 47 are corresponding to the insertion holes 15 one by one.

Furthermore, one side of the protection cover 4 facing the end shell 1 is distributed in a step shape, so that the protection cover 4 can be abutted against a radial side wall of the end shell 1 different from the opening direction of the opening 14 in the process of detaching the locking cover 33, and the structural strength of the detachment of the locking cover 33 is improved.

Referring to fig. 1 and fig. 4, a pressing plate 48 is further flexibly connected to the protective cover 4, and a pressing block 49 for abutting against the locking cover 33 is integrally arranged on the pressing plate 48. The protective cover 4 is made of plastic and other materials, and the thickness of the abutting plate 48 near the joint with the protective cover 4 is smaller, so that the joint between the abutting plate 48 and the protective cover 4 can be bent to a certain extent, but the thicker part can still ensure higher strength. In a preferred embodiment, the pressing plate 48 is connected to a side of the protecting cover 4 away from the end casing 1 and extends in a direction away from the end casing 1, and during use, the pressing plate 48 is folded in a direction close to the end casing 1, and the pressing block 49 is located just opposite to the locking cover 33, so that the locking cover 33 can be pushed into the assembling groove 312 by increasing the pressure on the pressing plate 48.

If the covering area between the end shells 1 covered by the protective cover 4 is too large, the protective cover 4 is correspondingly provided with an installation opening 410 for the locking cover 33 to be separated, and the pressing block 49 correspondingly passes through the installation opening 410 to be abutted against the locking cover 33.

The implementation principle of the optical fiber connector in the embodiment of the application is as follows: when the optical fiber connector is connected with the optical fiber cable, firstly, the optical fiber cable strips off the cable skin with fixed length and the coating of the optical fiber according to the process requirements, then the tail cover 22 is taken down, the stripped optical fiber cable passes through the tail cover 22, the optical fiber cable passes through the end connection core 3 along the clamping sheets 212 at two sides, then the jacking plate 48 on the protective cover 4 is bent, the locking cover 33 is placed at the corresponding position and is assembled into the assembly groove 312 through the pressing of the jacking plate 48, and then the tail cover 22 is screwed to finish the installation.

The protective cover 4 can be removed by pressing the elastic latch 5, and when the locking cover 33 needs to be removed, the insert plate on the protective cover 4 is inserted into the corresponding socket 15 and the locking cover 33 is ejected out by force.

The optical fiber connector shown in the drawings is of an LC type design, but is not limited to this type of optical fiber connector, and the corresponding partial structure may be applied to an SC type optical fiber connector, an FC type optical fiber connector, and the like.

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 (10)

1. An optical fiber connector, comprising:

an end housing (1) for connection with a receiver;

the tail shell (2) is connected with the end shell (1) and is used for clamping and fixing the optical cable; and the number of the first and second groups,

the end connection core (3) is arranged in the end shell (1) and is used for clamping and fixing the optical fiber;

wherein, termination core (3) are including casing (31), elasticity clamping piece (32) and locking lid (33), through-hole (311) that supply optic fibre to run through are seted up to casing (31) axial, casing (31) radially have been seted up and have been supplied elasticity clamping piece (32) installation and with assembling groove (312) of through-hole (311) intercommunication, elasticity clamping piece (32) have elastic connection's first lamellar body (321) and second lamellar body (322), have between first lamellar body (321) and the second lamellar body (322) and supply clamping channel (323) that optic fibre runs through, locking lid (33) lid fits the opening of assembling groove (312), just be provided with on locking lid (33) and drive first lamellar body (321) and second lamellar body (322) and be close to each other with the driving surface (331) of pressing from both sides tight optic fibre.

2. The fiber optic connector of claim 1, wherein: first lamellar body (321) include butt joint portion (3211) and distribute in spacing portion (3212) of butt joint portion (3211) one side along the axis direction of termination core (3), just be provided with spacing buckle (314) on the lateral wall that is located assembly groove (312) on casing (31), spacing portion (3212) and butt joint portion (3211) within a definite time form joint groove (3213) that supply spacing buckle (314) joint.

3. The fiber optic connector of claim 1, wherein: the locking cover (33) is provided with at least one locking buckle (332), and the shell (31) is provided with a locking clamping groove (315) for buckling the locking buckle (332).

4. The fiber optic connector of claim 3, wherein: be provided with on end shell (1) and supply locking cover (33) to assemble opening (14) to casing (31), one side that end shell (1) deviates from in opening (14) is provided with and locks draw-in groove (315) intercommunication and socket (15) of equidirectional extension.

5. The optical fiber connector according to any one of claims 1 to 4, wherein: end shell (1) is seted up towards one side of tail shell (2) and is supplied termination core (3) to wear to establish and the chamber (12) that slides, termination core (3) just are located and are provided with elastic component (36) in the chamber (12) that slides towards one side of tail shell (2), elastic component (36) force termination core (3) are all the time to the trend that the direction of keeping away from tail shell (2) slided.

6. The optical fiber connector according to any one of claims 1 to 4, wherein: tail shell (2) include tail clamp (21) and tail-hood (22), tail clamp (21) and end shell (1) fixed connection, tail clamp (21) include connecting seat (211) and connect on connecting seat (211) and to two clamping pieces (212) of keeping away from the direction extension of end shell (1), clamping piece (212) are used for the fixed optical cable of centre gripping, the internal diameter of tail-hood (22) reduces along the direction of keeping away from end shell (1) gradually, tail-hood (22) cover is located two clamping pieces (212) outer and with connecting seat (211) threaded connection, clamping piece (212) are close to with buckling each other with the inner wall contact of tail-hood (22), one side that clamping piece (212) are close to each other is provided with locating piece (214) that supply the cable skin section butt of optical cable.

7. The fiber optic connector of claim 4, wherein: one side that tail shell (2) were kept away from in end shell (1) is provided with visor (4), the one end of visor (4) is provided with protection chamber (41) that confession end shell (1) wore to establish, be provided with elasticity block tongue (5) on the lateral wall of end shell (1), elasticity block tongue (5) are fixed with visor (4) joint.

8. The fiber optic connector of claim 7, wherein: the both sides of elasticity block tongue (5) are provided with locking piece (51), be provided with on visor (4) and supply block tongue chamber (44) that elasticity block tongue (5) wore to establish, be provided with along the degree of depth direction in protection groove (43) on the both sides cell wall in block tongue chamber (44) and supply locking piece (51) to wear to establish and the intercommunication groove (45) that slide, be provided with on the lateral wall in intercommunication groove (45) and feed locking groove (46) that locking piece (51) wore to establish with intercommunication groove (45), elasticity block tongue (5) obstruct locking piece (51) are from locking groove (46) to intercommunication groove (45) break away from.

9. The fiber optic connector of claim 7, wherein: one end of the protective cover (4) is provided with a plug-in sheet (47) which is arranged in the socket (15) in a penetrating way and is used for ejecting the locking cover (33) from the opening (14).

10. The fiber optic connector of claim 7, wherein: the protective cover (4) is flexibly connected with a top pressure plate (48), a top pressure block (49) is arranged on the top pressure plate (48), and the top pressure plate (48) is bent to enable the top pressure block (49) to be abutted against the locking cover (33).

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