CN112083531A

CN112083531A - Optical fiber movable connector

Info

Publication number: CN112083531A
Application number: CN201910507336.XA
Authority: CN
Inventors: 万亮; 黄晶; 黄美金
Original assignee: Fiberhome Telecommunication Technologies Co Ltd
Current assignee: Fiberhome Telecommunication Technologies Co Ltd
Priority date: 2019-06-12
Filing date: 2019-06-12
Publication date: 2020-12-15
Anticipated expiration: 2039-06-12
Also published as: WO2020248554A1; CN112083531B

Abstract

The invention discloses an optical fiber movable connector, wherein an optical fiber inserting core is arranged at the head end of a main body of a hollow structure, and a shell is detachably sleeved outside the main body; the push-pull component is partially arranged at the tail end of the main body in a sliding manner, and one end of the push-pull component, which is positioned outside the main body, is used for installing a butt-jointed optical fiber; the butt joint is arranged in the head end of the main body and comprises a base and an upper cover, the upper cover is arranged on the base in a covering mode, and a butt joint channel is formed between the upper cover and the base; one end of the embedded optical fiber is arranged in the optical fiber plug core, the other end of the embedded optical fiber is positioned in the butt joint channel, and the butt joint channel is used for butt joint of the embedded optical fiber and the butt joint optical fiber; the outer tail sheath is used for being screwed with the main body, fixing the push-pull component after pushing the push-pull component, and locking the upper cover on the base so as to enable the butted optical fiber to form bending outside the butting channel. The invention can not only avoid polluting the cut end face of the butted optical fiber during butting, but also does not need to manually control the bending of the butted optical fiber.

Description

Optical fiber movable connector

Technical Field

The invention relates to the technical field of optical fiber communication, in particular to an optical fiber movable connector.

Background

With the development of communication technology, optical fiber transmission is increasingly applied to communication systems, and optical fibers are mainly connected with optical fibers through optical fiber connectors and optical fiber adapters. Fibre optic active connectors are typically the main component of mechanical connectors in odn (optical Distribution network). During ODN engineering field implementation and subsequent maintenance, it is often necessary to fabricate fiber pigtails in the field. There are two methods generally used at present: one is field fusion, that is, a fusion splicer is used to fuse a section of optical fiber prefabricated into an end in a factory with an optical cable; the other is field assembly, i.e. assembling a mechanical fiber optic connector directly on the cable. The field welding needs welding machines and other equipment, and has certain requirements on the operating environment; the field assembly has certain requirements on the quality of operators and certain failure rate. The human factor is often the greatest in the case of field assembly failure. For field assembly, the following problems often arise:

(1) when the field assembly type quick connector is used, an operator needs to directly hold the butted optical fibers for butting, and the optical fibers are easy to touch the inner wall of the connector to cause pollution of a cut end face due to the fact that the arm possibly shakes to a certain degree;

(2) after the optical fiber is penetrated into the field assembly type quick connector, the bending degree of the optical fiber needs to be manually controlled;

(3) it is difficult for an operator in a low light environment or older to perform an optical fiber alignment operation;

(4) the lock catch for fixing the optical fiber of the field assembly type quick connector needs to be locked manually, and the action is easy to forget during actual operation.

Disclosure of Invention

The invention aims to provide an optical fiber movable connector which can avoid polluting the cut end face of a butted optical fiber during butting and does not need to manually control the bending of the butted optical fiber.

In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a fiber optic pigtail connector comprising:

the head end of the main body of the hollow structure is provided with an optical fiber inserting core;

a housing detachably fitted outside the main body;

the push-pull component is partially arranged at the tail end of the main body in a sliding manner, and one end of the push-pull component, which is positioned outside the main body, is used for installing a butted optical fiber;

the embedded optical fiber and the butt joint arranged in the head end of the main body are embedded, the butt joint comprises a base and an upper cover, the upper cover is arranged on the base in a covering mode, and a butt joint channel is formed between the upper cover and the base; one end of the embedded optical fiber is arranged in the optical fiber plug core, the other end of the embedded optical fiber is positioned in the butt joint channel, and the butt joint channel is used for butt joint of the embedded optical fiber and the butt joint optical fiber;

and the outer tail sheath is used for being screwed with the main body, fixing the push-pull component after pushing the push-pull component, and locking the upper cover on the base so as to enable the butted optical fiber to form a bend outside the butting channel.

Further, the main body includes:

a first portion including a first receiving space in which the butt joint is received;

the second part is formed by extending the first part and comprises a second accommodating space, the first accommodating space is communicated with the second accommodating space, and the push-pull component part is arranged in the second accommodating space in a sliding mode.

Further, the outer wall of the second part is provided with an external thread matched with the outer tail sheath;

the push-pull component comprises a push-pull section and an installation groove body, and the installation groove body is connected with the push-pull section and is used for installing a butt-joint optical fiber; the push-pull section is arranged in the second accommodating space in a sliding mode, an accommodating cavity used for bending the butt-joint optical fiber is formed in the push-pull section along the axial direction of the push-pull section, and the accommodating cavity is communicated with the installation groove body.

Furthermore, a first guide groove is formed in the inner wall of the second part along the axial direction of the main body, and a guide rail matched with the first guide groove is arranged on the outer wall of the push-pull section.

Furthermore, a through groove is formed in the inner wall of the second part along the axial direction of the main body, a first anti-falling part is arranged on the outer wall of the push-pull section, and the first anti-falling part is positioned on one side, far away from the installation groove body, of the push-pull section; the first anti-dropping part is positioned in the through groove and can move in the through groove along the axial direction of the main body.

Furthermore, a positioning surface for inserting and positioning the butt-jointed optical fiber is arranged in the installation groove body.

Further, be equipped with the profile of tooth structure that is used for the centre gripping to dock optic fibre in the installation cell body, just at least one bar opening has been seted up on the installation cell body, the bar opening is followed installation cell body axial extension, and each the bar opening is followed installation cell body circumference distributes.

Further, the butt joint further comprises a lock catch in an annular structure;

the base and the upper cover are sleeved in the lock catch; at the same time, the user can select the desired position,

the outer tail sheath pushes the lock catch to move towards the optical fiber insertion core in the screw connection process, and the upper cover is pressed on the base.

Further, the first part also comprises an end opening and a side opening communicated with the first accommodating space;

the base comprises a base body and a ferrule ring body arranged at one end of the base body, the base body penetrates through the end opening and extends into the first accommodating space, the ferrule ring body is assembled at the end opening, an optical fiber butt joint groove is formed in the base body, and the optical fiber butt joint groove faces the side opening;

the upper cover comprises a clamping surface, and the clamping surface and the optical fiber butt joint groove form the butt joint channel; meanwhile, a boss is arranged on the top surface of the upper cover, and when the upper cover is pressed on the base through the lock catch, the lock catch abuts against the boss.

Further, the lock catch comprises an annular lock catch body, the lock catch body is accommodated in the first accommodating space, the lock catch body extends to form a pushing arm, and the pushing arm extends from the first part to the second part through the side opening; at the same time, the user can select the desired position,

the outer tail sheath is in threaded connection with the second portion and abuts against the pushing arm, so that the lock catch moves axially on the base body and presses the upper cover.

Furthermore, one side of the base body, which is far away from the ferrule ring body, is provided with a blocking protrusion, and two ends of the upper cover are respectively in contact with or attached to the ferrule ring body and the blocking protrusion.

Furthermore, two blocking bodies are further arranged on the base body, the two blocking bodies are respectively positioned on two sides of the optical fiber butt joint groove, and the two blocking bodies are respectively contacted with or attached to two side walls of the upper cover.

Furthermore, a second guide groove is formed in the first portion along the axial direction of the main body, a guide block matched with the second guide groove is arranged on the ferrule ring body, and the guide block is slidably arranged on the second guide groove.

Furthermore, a supporting wall is arranged between the first part and the second part, and a connecting channel for communicating the first accommodating space with the second accommodating space is formed in the supporting wall;

one end of the base body, which is far away from the ferrule ring body, is connected with an alignment ring body for a butt joint optical fiber to penetrate, and the alignment ring body is coaxial and communicated with the base body; the aligning ring body penetrates through the connecting channel, a buffering part is sleeved on the aligning ring body, and two ends of the buffering part are respectively abutted against the base body and the abutting wall.

Furthermore, the insert ring body is internally provided with a taper hole for guiding the embedded optical fiber to be inserted into the optical fiber butt joint groove; and/or the presence of a gas in the gas,

the alignment ring body has a tapered hole therein for guiding the docking optical fiber to be inserted into the optical fiber docking slot.

Further, a first guide groove is formed in one side, away from the ferrule ring body, of the optical fiber butt joint groove, a second guide groove matched with the first guide groove is formed in the upper cover, and the first guide groove and the second guide groove are integrally configured to be: and guiding the butted optical fibers to be inserted into the optical fiber butting grooves.

Compared with the prior art, the invention has the advantages that:

the optical fiber connector comprises a main body, wherein an optical fiber inserting core and a butt joint with a butt joint channel are arranged at the head end of the main body, a push-pull component is arranged at the tail end in a sliding mode, an embedded optical fiber part arranged on the optical fiber inserting core is located in the butt joint channel, when the optical fiber connector is used, a butt joint optical fiber is installed on the push-pull component, the push-pull component is directly pushed in the axial direction of the optical fiber inserting core, the butt joint optical fiber moves in the butt joint channel to be in butt joint with the embedded optical fiber, and the butt joint process does not need an operator to hold the butt joint optical fiber for butt joint, so that the condition that the cut end. After butt joint, the outer tail sheath is screwed in the main body, the outer tail sheath can continuously push the push-pull component to move towards the direction of the optical fiber inserting core, meanwhile, the outer tail sheath can lock the upper cover on the base, and butt joint optical fibers are bent outside a butt joint channel. Compared with manual bending control, the bending machine greatly improves the working efficiency.

The invention does not need the operator to hold the butt joint optical fiber for butt joint, so the operation of optical fiber butt joint is more convenient for the operator in a weak light environment or older operators, thereby greatly reducing the workload, lowering the quality requirement of the operator and improving the operation efficiency.

In the process of screwing the outer tail sheath, the outer tail sheath locks the upper cover on the base without manual locking, so that the locking is avoided from being forgotten.

Drawings

FIG. 1 is an exploded view of a fiber optic tether connector according to an embodiment of the present invention;

FIG. 2 is a schematic view of a main body according to an embodiment of the present invention;

FIG. 3 is a schematic view of another perspective structure of the main body according to the embodiment of the present invention;

FIG. 4 is a schematic view of a push-pull member according to an embodiment of the present invention;

FIG. 5 is a schematic view of another perspective structure of the push-pull member according to the embodiment of the present invention;

FIG. 6 is a schematic diagram of a structure of a butted optical fiber according to an embodiment of the present invention;

fig. 7 is a schematic view of a locking structure according to an embodiment of the present invention;

FIG. 8 is a schematic view of a base structure according to an embodiment of the present invention;

FIG. 9 is a schematic structural view of the main body with the base mounted therein according to the embodiment of the present invention;

fig. 10 is a schematic structural diagram of a pre-buried optical fiber and an optical fiber ferrule according to an embodiment of the present invention;

fig. 11 is a schematic view of a top cover according to an embodiment of the present invention;

fig. 12 is a schematic view of another perspective structure of the upper cover according to the embodiment of the present invention;

fig. 13 is a schematic structural diagram of a base on which a pre-buried optical fiber and an optical fiber ferrule provided in the embodiment of the present invention are mounted;

FIG. 14 is a schematic view of the structure of FIG. 13 after the upper cover is installed;

FIG. 15 is a schematic view of the structure of FIG. 14 after the latch is installed;

FIG. 16 is a schematic view showing a structure after a cushion member is mounted on the base of FIG. 15;

FIG. 17 is a schematic view of the structure of FIG. 16 after the main body is mounted thereon;

FIG. 18 is a schematic view showing a structure after a push-pull member is installed on the base of FIG. 17;

FIG. 19 is a schematic assembled optical fiber connector according to an embodiment of the present invention;

FIG. 20 is a schematic view of a fiber optic pigtail connector of an embodiment of the present invention with the outer tail jacket removed and the optical fibers initially mated;

FIG. 21 is a schematic view of another alternative optical configuration of an optical fiber pigtail connector with a butt optical fiber initially installed after removal of an outer tail jacket;

fig. 22 is a schematic structural view of pushing the push-pull member to butt the pre-buried optical fiber and the butt optical fiber based on fig. 21;

fig. 23 is a schematic structural view of the pre-buried optical fiber and the butted optical fiber in butt joint and when the butted optical fiber is bent according to the embodiment of the present invention;

fig. 24 is a schematic structural diagram of a fiber optic loose connector according to an embodiment of the present invention, which is connected to a mating optical fiber.

In the figure: A. a first accommodating space; B. a second accommodating space; C. the end part is open; D. a side opening; 1. a base; 100. a base body; 101. a ferrule ring body; 102. an optical fiber butt groove; 103. blocking protrusions; 104. a blocking body; 105. a guide block; 106. an alignment ring body; 107. a second drop prevention member; 108. a first guide groove; 2. an upper cover; 20. a clamping surface; 21. a boss; 22. a second guide groove; 3. locking; 30. a lock catch body; 31. a pushing arm; 4. an optical fiber ferrule; 5. pre-burying an optical fiber; 50. a fourth end face; 51. a third end face; 6. a buffer member; 7. a main body; 70. a first portion; 71. a second portion; 72. an external thread; 73. a first guide groove; 74. a through groove; 75. a second guide groove; 76. a holding wall; 77. a connecting channel; 8. a housing; 9. a push-pull member; 90. an accommodating cavity; 91. a push-pull section; 92. installing a groove body; 920. positioning the surface; 921. a tooth-shaped structure; 922. a strip-shaped opening; 93. a guide rail; 94. a first drop prevention member; 10. an outer tail sheath; 1000. a friction enhancing structure; 11. butting optical fibers; 110. a stripping section; 111. a bare optical fiber; 112. a second end face; 113. a first end face; 12. and (4) butt joint.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

The embodiment of the invention provides an optical fiber connector which can be directly connected in the field, as shown in fig. 1, the head end of a main body 7 of a hollow structure is provided with an optical fiber ferrule 4, the optical fiber ferrule 4 can be formed by ceramic, glass, plastic or metal materials and is used for supporting a pre-embedded optical fiber 5 inserted and fixed in the optical fiber ferrule 4, a shell 8 is detachably sleeved outside the main body 7, the main body 7 and the shell 8 are constructed to be provided with an SC (clamping type square connector) type interface, and optical fiber connectors with other standard types of interfaces can be provided, such as an ST (clamping type round head) type interface, an FC (round threaded connector) type interface or an LC (similar to the SC connector and smaller than the SC connector) type interface; the push-pull component 9 is partially arranged at the tail end of the main body 7 in a sliding manner, and one end of the push-pull component 9, which is positioned outside the main body 7, is used for installing a butt-jointed optical fiber 11; the butt joint 12 is arranged in the head end of the main body 7, the butt joint 12 comprises a base 1 and an upper cover 2, the upper cover 2 is arranged on the base 1 in a covering mode, and a butt joint channel is formed between the upper cover 2 and the base 1; one end of the embedded optical fiber 5 is arranged in the optical fiber ferrule 4, and the other end of the embedded optical fiber is positioned in a butt joint channel which is used for butt joint of the embedded optical fiber 5 and the butt joint optical fiber 11; the outer tail sheath 10 is used for being screwed on the main body 7, fixing the push-pull part 9 after being pushed, and locking the upper cover 2 on the base 1, so that the butted optical fiber 11 is bent outside the butting channel to form a bent section (see fig. 22).

According to the optical fiber connector, the optical fiber inserting core 4 and the butt joint 12 with the butt joint channel are arranged in the head end of the main body 7, the push-pull component 9 is arranged at the tail end in a sliding mode, the embedded optical fiber 5 arranged on the optical fiber inserting core 4 is partially located in the butt joint channel, when the optical fiber connector is used, the butt joint optical fiber 11 is installed on the push-pull component 9, the push-pull component 9 is directly pushed axially towards the direction of the optical fiber inserting core 4, the butt joint optical fiber 11 moves in the butt joint channel to be in butt joint with the embedded optical fiber 5, the butt joint process does not need an operator to hold the butt joint optical fiber 11 for butt joint, and therefore the situation that the cut end face of the butt joint optical fiber. After the butt joint, in the process of screwing the outer tail sheath 10 on the main body 7, the outer tail sheath 10 will continue to push the push-pull component 9 to move towards the direction of the optical fiber ferrule 4, and at the same time, the outer tail sheath 10 will lock the upper cover 2 on the base 1, and make the butt joint optical fiber 11 form a bend outside the butt joint channel. Therefore, the butt-jointed optical fiber 11 is bent by the size control of the push-pull component 9 and the screw connection action of the outer tail sheath 10, and the operation efficiency is greatly improved compared with manual bending control; the control of the bending degree of the butt joint optical fiber 11 is determined according to the length of a section of the butt joint optical fiber 11 for butt joint when the butt joint optical fiber 11 is installed on the push-pull component 9; according to the invention, since the alignment optical fiber 11 does not need to be held by an operator for butt joint, the optical fiber butt joint operation is also convenient for the operator in a low light environment or older people, and the outer tail sheath 10 can lock the upper cover 2 on the base 1 without manual locking.

In the using process, the push-pull component is pushed to realize butt joint, and then the outer tail sheath is screwed to realize bending. In consideration of different use habits of users, the optical fiber connector provided by the invention can be used for pushing the push-pull component to move by the screw joint action of the outer tail sheath directly in a mode of screw joint of the outer tail sheath so as to achieve the aim of butt joint first and then continuously screw joint the outer tail sheath so as to achieve the purpose of back bending.

Further, as shown in fig. 2 and 3, the main body 7 includes a first portion 70 and a second portion 71, the first portion 70 includes a first receiving space a, the butt joint 12 is received in the first receiving space a, the second portion 71 is formed by extending the first portion 70, the second portion 71 includes a second receiving space B, and the first receiving space a and the second receiving space B are communicated, and the push-pull member 9 is partially slidably disposed in the second receiving space B.

In further detail, as shown in fig. 2 and 3, the outer wall of the second portion 71 is provided with an external thread 72 which is matched with an internal thread (not shown in the figure) of the outer tail sheath 10; referring to fig. 4, the push-pull member 9 includes a push-pull section 91 and a mounting groove 92, and the mounting groove 92 is connected to the push-pull section 91 and is used for mounting the butted optical fibers 11; the push-pull section 91 is slidably disposed in the second accommodating space B, and the push-pull section 91 is provided with an accommodating cavity 90 along the axial direction thereof for bending the optical fiber 11, and the accommodating cavity 90 is communicated with the installation groove 92.

Further, as shown in fig. 2, the inner wall of the second portion 71 is provided with a first guide groove 73 along the axial direction of the main body 7, as shown in fig. 4, the outer wall of the push-pull section 91 is provided with a guide rail 93 adapted to the first guide groove 73, and the push-pull member 9 can be smoothly pushed and pulled in the main body 7 by the cooperation of the guide rail 93 and the first guide groove 73.

Further thinning, as shown in fig. 2 and fig. 3, a through groove 74 is formed in the inner wall of the second portion 71 along the axial direction of the main body 7, as shown in fig. 5, a first anti-release member 94 is arranged on the outer wall of the push-pull section 91, the first anti-release member 94 is a convex block, and the first anti-release member 94 is located on one side of the push-pull section 91 away from the installation groove 92; the first anti-slip means 94 are located in the through slot 74 and can move axially along the main body 7 inside the through slot 74, and the push-pull section 91 is prevented from being inadvertently pulled out of the second portion 71 by the abutment action of the first anti-slip means 94.

Referring to fig. 6, according to the installation requirement, a part of the butted optical fiber 11 is stripped to obtain a stripped section 110, and a part of the stripped section 110 is stripped to obtain a bare optical fiber 111; referring to fig. 4, a positioning surface 920 for inserting and positioning the butted optical fiber 11 is disposed in the installation groove 92, when the butted optical fiber 11 is installed on the installation groove 92, the first end surface 113 of the butted optical fiber 11 abuts against the positioning surface 920, the stripping section 110 passes through the receiving cavity 90, the bare optical fiber 111 aligns with or is partially located in the butted channel, the contracted tail end of the outer tail sheath 10 can abut against the tail end surface of the installation groove 92, when the outer tail sheath 10 moves on the external thread 72, the outer tail sheath 10 drives the installation groove 92 to clamp the butted optical fiber 11, then the push-pull member 9 and the butted optical fiber 11 are driven to move together toward the butted channel, the second end surface 112 of the butted optical fiber 11 abuts against the pre-buried optical fiber 5 in the butted channel, the stripping section 110 is bent in the receiving cavity 90 when the outer tail sheath continues to rotate until the outer tail sheath cannot be screwed in any more, so as to form a bent section, the outer tail sheath 10 can not be screwed in any more, so that the acting force of the installation groove 92 for clamping the butt-joint optical fiber 11 can be ensured to be appropriate, meanwhile, a friction enhancing structure 1000 (shown in figure 1) for increasing the friction force during torsion is arranged on the outer tail sheath 10, and the friction enhancing structure 1000 can adopt a groove or other structures.

Referring to fig. 4, a tooth-shaped structure 921 for clamping the butted optical fiber 11 is arranged in the mounting groove 92, the outer tail sheath 10 can generate an axial force when rotating, the axial force presses the tooth-shaped structure 921 through the mounting groove 92, the butted optical fiber 11 can be tightly embraced, at least one strip-shaped opening 922 is formed in the mounting groove 92, the strip-shaped opening 922 axially extends along the mounting groove 92, each strip-shaped opening 922 is circumferentially distributed along the mounting groove 92, the strip-shaped opening 922 divides the mounting groove 92 into a plurality of pieces, and under the pressing force of the outer tail sheath 10, the mounting groove 92 is easily deformed and tightened up to enable the butted optical fiber 11 to be clamped more tightly.

Referring to fig. 7, the butt joint 12 further includes a lock catch 3 of a ring structure; the base 1 and the upper cover 2 are sleeved in the lock catch 3; meanwhile, the outer tail sheath 10 pushes the lock catch 3 to move towards the optical fiber insertion core 4 in the screw connection process, and the upper cover 2 is pressed on the base 1.

More in detail, as shown in fig. 2 and 3, the first portion 70 further comprises an end opening C and a side opening D communicating with the first housing space a; referring to fig. 7 and 8, the base 1 includes a base body 100 and a ferrule ring 101 disposed at one end of the base body 100, the ferrule ring 101 is used for mounting the optical fiber ferrule 4, the base body 100 passes through the end opening C and extends into the first receiving space a, the ferrule ring 101 is assembled at the end opening C, and the base body 100 is provided with an optical fiber butt-joint groove 102 (which may be a V-groove or a groove with another shape) coaxial and communicated with the ferrule ring 101, the optical fiber butt-joint groove 102 faces the side opening D (see fig. 9), referring to fig. 10, a part of the pre-embedded optical fiber 5 mounted on the optical fiber ferrule 4 passes through the ferrule ring 101 so that the third end face 51 enters the optical fiber butt-joint groove 102 and is butt-jointed with the second end face 112 of the butt; referring to fig. 11 and 12, the upper cover 2 includes a clamping surface 20 for clamping the optical fiber in cooperation with the optical fiber docking slot 102, the clamping surface 20 and the optical fiber docking slot 102 forming a docking channel; meanwhile, the top surface of the upper cover 2 is provided with a boss 21, so that the outer distance between the base 1 and the upper cover 2 is larger than the inner diameter of the lock catch 3, and when the lock catch 3 presses the upper cover 2 on the base 1, the lock catch 3 is abutted against the boss 21. The optical fiber butt joint groove 102 and the clamping surface 20 are matched with each other, so that a butt joint channel is formed to realize butt joint of the pre-buried optical fiber 5 and the butt joint optical fiber 11, meanwhile, the clamping force of the pre-buried optical fiber 5 and the butt joint optical fiber 11 can be optimized, the smooth butt joint of the pre-buried optical fiber 5 and the butt joint optical fiber 11 can be ensured when the optical fiber butt joint groove and the clamping surface are more important, dislocation cannot occur, and the optical characteristics of optical fiber termination are ensured.

The ferrule ring 101 has a tapered hole therein for guiding the embedded fiber 5 to be inserted into the fiber butt groove 102, and a tapered hole (not numbered in fig. 8, but shown) for guiding the embedded fiber 5 may be provided between the ferrule ring 101 and the fiber butt groove 102.

Referring to fig. 7, the latch 3 includes an annular latch body 30, and the latch body 30 is accommodated in the first accommodating space a, the latch body 30 extends to form a pushing arm 31, and the pushing arm 31 extends from the first portion 70 to the second portion 71 through the side opening D (see fig. 17); meanwhile, the outer tail sheath 10 is screwed to the second portion 71, and the outer tail sheath 10 abuts against the pushing arm 31, so that the latch 3 moves axially on the base body 100 and presses the upper cover 2.

Referring to fig. 8, a blocking protrusion 103 is disposed on a side of the base body 100 away from the ferrule ring 101, and two ends of the upper cover 2 are respectively in contact with or attached to the ferrule ring 101 and the blocking protrusion 103. The base body 100 is further provided with two stoppers 104, the two stoppers 104 are respectively located at two sides of the optical fiber butt-joint groove 102, and the two stoppers 104 are respectively contacted or attached to two side walls of the upper cover 2. By arranging the blocking protrusion 103, the upper cover 2 can be just embedded in the ferrule ring body 101 and the blocking protrusion 103, and the outer tail sheath 10 is prevented from abutting against the pushing arm 31, so that when the lock catch 3 axially moves on the base body 100, the upper cover 2 axially moves to cause the upper cover 2 to be difficult to press the base body 100; by arranging the blocking bodies 104, the upper cover 2 can be just embedded between the two blocking bodies 104, and the optical fiber butt joint dislocation caused by the radial movement of the upper cover 2 is avoided.

Referring to fig. 3, the first portion 70 is provided with a second guide groove 75 along the axial direction of the main body 7, and referring to fig. 8, the ferrule ring 101 is provided with a guide block 105 adapted to the second guide groove 75, and the guide block 105 is slidably disposed on the second guide groove 75.

Referring to fig. 2, a supporting wall 76 is disposed between the first portion 70 and the second portion 71, and a connecting channel 77 communicating the first accommodating space a and the second accommodating space B is disposed on the supporting wall 76; referring to fig. 8, an alignment ring 106 for the penetration of the butted optical fiber 11 is connected to one end of the base body 100 away from the ferrule ring 101, the alignment ring 106 is coaxial and communicated with the base body 100, and a taper hole for guiding the butted optical fiber 11 to be inserted into the optical fiber butting groove 102 is formed in the alignment ring 106; the alignment ring 106 is disposed through the connecting channel 77, and the alignment ring 106 is sleeved with the buffer component 6, and two ends of the buffer component 6 are respectively abutted against the base body 100 and the abutting wall 76. The alignment ring 106 is further fixedly provided with a second anti-slip member 107, the second anti-slip member 107 is used for preventing the alignment ring 106 from disengaging from the connecting channel 77, as shown in fig. 8, the second anti-slip member in this example adopts a convex strip arranged along the circumference of the alignment ring 106.

The buffer member 6 may be various elastic bodies, in this example, a spring is used, and the buffer member 6 mainly functions to enable the fourth end surface 50 of the embedded optical fiber 5 in the optical fiber ferrule 4 to be tightly attached to the optical path to be butted by the compression force of the buffer member 6 when the optical fiber field connectors are butted.

Referring to fig. 8, a first guide groove 108 is disposed on a side of the optical fiber docking groove 102 away from the ferrule body 101, and referring to fig. 12, a second guide groove 22 adapted to the first guide groove 108 is disposed on the upper cover 2, and the first guide groove 108 and the second guide groove 22 are integrally configured as follows: the lead-in stub optical fiber 11 is inserted into the fiber stub groove 102. The first guide groove 108 and the second guide groove 22 are both semi-conical grooves or semi-funnel grooves.

The principle of the invention is as follows:

referring to fig. 13, the pre-buried optical fiber 5 is installed on the optical fiber ferrule 4, and is fixed by using epoxy resin glue, the optical fiber ferrule 4 is installed on the ferrule ring body 101, so that the third end face 51 of the pre-buried optical fiber 5 is located in the optical fiber butt joint groove 102, and a first semi-finished product is obtained;

referring to fig. 14, the upper cover 2 is covered on the base body 100 to obtain a second semi-finished product;

referring to fig. 15, the upper cover 2 is fixed to the base 1 by using the lock catch 3 to obtain a third semi-finished product;

referring to fig. 16, the cushion member 6 is mounted to obtain a fourth semi-finished product;

as shown in fig. 17, the fourth semi-finished product is pressed into the main body 7 as a whole to obtain a fifth semi-finished product;

referring to fig. 18, the push-pull member 9 is mounted on the fifth semi-finished product to obtain a sixth semi-finished product;

referring to fig. 19, the housing 8 and the outer tail boot 10 are mounted on the sixth semi-finished product, and the optical fiber movable connector of the present invention is obtained. The cable can be adapted to circular optical cables with the diameters of phi 0.9mm, phi 2.0mm, phi 3.0mm and the like, and can also be used on butterfly cables with the diameters of 2 x 3 mm.

When in use:

threading the outer tail jacket 10 into the cable;

removing the outer sleeve of the butted optical fiber 11 by using an optical cable stripper to obtain a stripping section 110, and stripping a part of the stripping section 110 by using Miller pliers to remove a coating to obtain a bare optical fiber 111;

cleaning the bare fiber 111 with absolute ethyl alcohol;

the bare fiber 111 is cut using fiber cutting;

the push-pull part 9 and the lock catch 3 are pulled open;

referring to fig. 20 and 21, the butted optical fiber 11 is snapped into the push-pull part 9;

after the butted optical fiber 11 is installed on the push-pull component 9, the axial center line of the butted optical fiber 11, the axial center line of the optical fiber butting groove 102 and the axial center line of the pre-buried optical fiber 5 are on the same horizontal line. Pushing the push-pull component 9 towards the outer shell 8, wherein the second end surface 112 of the bare fiber 111 is butted with the third end surface 51 of the pre-buried fiber 5 in the fiber butting groove 102 in the process of pushing the push-pull component 9 to form a butting point, as shown in fig. 22 and 23, and in the process of continuously pushing the push-pull component 9 or pushing the push-pull component 9 by screwing the outer tail sheath 10, the stripping section 110 in the accommodating cavity 90 of the push-pull component 9 is automatically bent to obtain a bent section, as shown in fig. 23;

the outer tail sheath 10 is screwed until the outer tail sheath is screwed, the outer tail sheath 10 will push the pushing arm 31 and push the lock catch body 30 to press the boss on the upper cover 2 in the screwing process, so as to lock the upper cover 2 and the base 1, and the assembly is completed as shown in fig. 24.

The present invention is not limited to the above-described embodiments, and it will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and such modifications and improvements are also considered to be within the scope of the present invention. Those not described in detail in this specification are within the skill of the art.

Claims

1. An optical fiber connector, comprising:

the head end of the main body (7) with a hollow structure is provided with an optical fiber inserting core (4);

a housing (8) detachably fitted over the main body (7);

the push-pull component (9) is partially arranged at the tail end of the main body (7) in a sliding manner, and one end, positioned outside the main body (7), of the push-pull component (9) is used for installing a butted optical fiber (11);

the optical fiber connector comprises a pre-buried optical fiber (5) and a butt joint connector (12) arranged in the head end of the main body (7), wherein the butt joint connector (12) comprises a base (1) and an upper cover (2), the upper cover (2) is arranged on the base (1) in a covering mode, and a butt joint channel is formed between the upper cover (2) and the base (1); one end of the embedded optical fiber (5) is arranged in the optical fiber inserting core (4), the other end of the embedded optical fiber is arranged in the butt joint channel, and the butt joint channel is used for butt joint of the embedded optical fiber (5) and the butt joint optical fiber (11);

and the outer tail sheath (10) is used for being screwed on the main body (7), fixing the push-pull component (9) after pushing the push-pull component, and locking the upper cover (2) on the base (1) so as to enable the butted optical fiber (11) to form a bend outside the butting channel.

2. A fibre optic connector as claimed in claim 1, wherein the main body (7) comprises:

a first portion (70), the first portion (70) comprising a first housing space (A), the butt joint (12) being housed in the first housing space (A);

and a second part (71), wherein the second part (71) is formed by extending the first part (70), the second part (71) comprises a second accommodating space (B), the first accommodating space (A) is communicated with the second accommodating space (B), and the push-pull component (9) is partially arranged in the second accommodating space (B) in a sliding manner.

3. The fiber optic pigtail of claim 2, wherein:

the outer wall of the second part (71) is provided with an external thread (72) matched with the outer tail sheath (10);

the push-pull component (9) comprises a push-pull section (91) and an installation groove body (92), and the installation groove body (92) is connected with the push-pull section (91) and is used for installing the butt-jointed optical fiber (11); the push-pull section (91) is slidably arranged in the second accommodating space (B), an accommodating cavity (90) for bending the butt-joint optical fiber (11) is formed in the push-pull section (91) along the axial direction of the push-pull section, and the accommodating cavity (90) is communicated with the installation groove body (92).

4. The fiber optic pigtail of claim 3, wherein:

a first guide groove (73) is formed in the inner wall of the second portion (71) along the axial direction of the main body (7), and a guide rail (93) matched with the first guide groove (73) is arranged on the outer wall of the push-pull section (91).

5. The fiber optic pigtail of claim 3, wherein: a through groove (74) is formed in the inner wall of the second part (71) along the axial direction of the main body (7), a first anti-falling part (94) is arranged on the outer wall of the push-pull section (91), and the first anti-falling part (94) is positioned on one side, away from the installation groove body (92), of the push-pull section (91); the first anti-slip means (94) are located in the through slot (74) and are axially movable along the body (7) in the through slot (74).

6. The fiber optic pigtail of claim 3, wherein: and a positioning surface (920) for inserting and positioning the butt-joint optical fiber (11) is arranged in the mounting groove body (92).

7. The fiber optic pigtail of claim 3, wherein: be equipped with in installation cell body (92) and be used for the centre gripping to dock profile of tooth structure (921) of optic fibre (11), just at least one bar opening (922) has been seted up on installation cell body (92), bar opening (922) are followed installation cell body (92) axial extension, and each bar opening (922) are followed installation cell body (92) circumference distributes.

8. The fiber optic connector of claim 2, wherein the butt joint (12) further comprises a ring-structured latch (3);

the base (1) and the upper cover (2) are sleeved in the lock catch (3); at the same time, the user can select the desired position,

the outer tail sheath (10) pushes the lock catch (3) to move towards the optical fiber ferrule (4) in the screw connection process, and the upper cover (2) is pressed on the base (1).

9. The fiber optic pigtail of claim 8, wherein:

the first portion (70) further comprising an end opening (C) and a side opening (D) communicating with the first housing space (A);

the base (1) comprises a base body (100) and a ferrule ring body (101) arranged at one end of the base body (100), the base body (100) penetrates through the end opening (C) and extends into the first accommodating space (A), the ferrule ring body (101) is assembled at the end opening (C), an optical fiber butt joint groove (102) is formed in the base body (100), and the optical fiber butt joint groove (102) faces the side opening (D);

the upper cover (2) comprises a clamping surface (20), the clamping surface (20) and the optical fiber butt-joint groove (102) form the butt-joint channel; meanwhile, a boss (21) is arranged on the top surface of the upper cover (2), and when the lock catch (3) presses the upper cover (2) on the base (1), the lock catch (3) abuts against the boss (21).

10. The fiber optic pigtail of claim 9, wherein:

the lock catch (3) comprises an annular lock catch body (30), the lock catch body (30) is accommodated in the first accommodating space (A), the lock catch body (30) extends to form an ejecting arm (31), and the ejecting arm (31) extends from the first part (70) to the second part (71) through the side opening (D); at the same time, the user can select the desired position,

the outer tail sheath (10) is in threaded connection with the second portion (71), and the outer tail sheath (10) abuts against the pushing arm (31) so that the lock catch (3) axially moves on the base body (100) and presses the upper cover (2).

11. The fiber optic pigtail of claim 9, wherein: one side of the base body (100) far away from the ferrule ring body (101) is provided with a blocking protrusion (103), and two ends of the upper cover (2) are respectively contacted or attached with the ferrule ring body (101) and the blocking protrusion (103).

12. The fiber optic pigtail of claim 9, wherein: the base body (100) is further provided with two blocking bodies (104), the two blocking bodies (104) are respectively located on two sides of the optical fiber butt joint groove (102), and the two blocking bodies (104) are respectively in contact with or attached to two side walls of the upper cover (2).

13. The fiber optic pigtail of claim 9, wherein: the first part (70) is provided with a second guide groove (75) along the axial direction of the main body (7), a guide block (105) matched with the second guide groove (75) is arranged on the ferrule ring body (101), and the guide block (105) is slidably arranged on the second guide groove (75).

14. The fiber optic pigtail of claim 9, wherein:

a propping wall (76) is arranged between the first part (70) and the second part (71), and a connecting channel (77) for communicating the first accommodating space (A) and the second accommodating space (B) is formed in the propping wall (76);

one end, far away from the ferrule ring body (101), of the base body (100) is connected with an alignment ring body (106) used for a butt joint optical fiber (11) to penetrate through, and the alignment ring body (106) is coaxial and communicated with the base body (100); the aligning ring body (106) penetrates through the connecting channel (77), a buffer part (6) is sleeved on the aligning ring body (106), and two ends of the buffer part (6) are respectively abutted to the base body (100) and the abutting wall (76).

15. The fiber optic pigtail of claim 14, wherein: the ferrule ring body (101) is internally provided with a taper hole for guiding the embedded optical fiber (5) to be inserted into the optical fiber butt joint groove (102); and/or the presence of a gas in the gas,

the alignment ring body (106) has a tapered hole therein for guiding the docking optical fiber (11) to be inserted into the fiber docking slot (102).

16. The fiber optic pigtail of claim 9, wherein:

the optical fiber butt joint groove (102) is provided with a first guide groove (108) at one side far away from the ferrule ring body (101), the upper cover (2) is provided with a second guide groove (22) matched with the first guide groove (108), and the first guide groove (108) and the second guide groove (22) are integrally configured into a structure that: guiding the docking optical fiber (11) to be inserted into the optical fiber docking groove (102).