CN220419610U

CN220419610U - Optical fiber connector

Info

Publication number: CN220419610U
Application number: CN202321131373.3U
Authority: CN
Inventors: 吴嘉容; 许琮尧
Original assignee: Lianxun Communication Tianjin Co ltd
Current assignee: Lianxun Communication Tianjin Co ltd
Priority date: 2022-06-24
Filing date: 2023-05-10
Publication date: 2024-01-30
Anticipated expiration: 2033-05-10
Also published as: CN117289401A; TWM634059U

Abstract

The utility model relates to an optical fiber connector, which comprises a coupling piece, a core tube assembly, a sleeve, a metal retaining piece and a pressing piece; the core tube assembly is arranged in the coupling piece, the metal retaining piece is combined with one end of the coupling piece, the elastic arm of the metal retaining piece obliquely extends to the other end of the coupling piece, two sides of the elastic arm are respectively provided with a plurality of retaining structures, the sleeve is arranged at the other end of the coupling piece and is combined with the pressing piece, and the pressing part of the pressing piece extends to the elastic arm; the metal retaining member is fastened with the adapter, thereby prolonging the service life of the optical fiber connector.

Description

Optical fiber connector

Technical Field

The present utility model relates to a connector, and more particularly to an optical fiber connector.

Background

Optical fibers are light-conducting tools, and connectors are necessary to mediate the optical fibers to the electronic devices in order to connect the optical fibers to various electronic devices for the information transmitted by the optical fibers to be used by the electronic devices. The general optical fiber connector is matched with the male optical fiber connector by a female Adapter (Adapter), the female Adapter is arranged on the electronic device, and the male optical fiber connector can form a connection relationship when being inserted into the female Adapter, thereby achieving the purposes of clamping and data transmission. The optical fiber connector is widely applied to an optical communication network, a data network or a cable television network due to the advantage of small volume.

Referring to fig. 1 and 2, fig. 1 is a schematic view of a prior art optical fiber connector a, and fig. 2 is a schematic side view of a prior art optical fiber connector a and an adapter B when they are plugged; the conventional male optical fiber connector a has an optical fiber housing A1 made of plastic and an elastic arm A2 above the optical fiber housing A1, the elastic arm A2 extends obliquely outwards from the top of the optical fiber housing A1, and two sides of the elastic arm A2 are integrally formed with a stop block a21, so that the stop block a21 is selectively clamped or separated from a fastening hole B1 of the adapter B, and because the optical fiber housing a and the elastic arm A2 are of a structure formed by adopting single plastic, the elastic arm A2 is easy to break during plugging and bending.

Disclosure of Invention

According to some embodiments, an optical fiber connector includes a coupling member, a core tube assembly, a ferrule, a metal backstop, and a press; the coupling piece is provided with an accommodating space and a plurality of openings, and each opening is positioned at two ends of the coupling piece and communicated with the accommodating space; the core tube assembly is arranged in the accommodating space; the sleeve is combined with the opening; the metal retaining member is provided with a frame body, the frame body is combined with one end of the coupling member, the metal retaining member comprises an elastic arm, the elastic arm obliquely extends from the frame body towards the other end of the coupling member, and two sides of the elastic arm are respectively provided with at least one retaining structure; the pressing piece is provided with a sleeving part and a pressing part, the sleeving part is sleeved on the sleeve, and the pressing part extends from the sleeving part to the elastic arm.

Preferably, each retaining structure protrudes outwards from two sides of the spring arm, and each retaining structure contacts with the inner wall surfaces of two butting grooves inside the adapter in a surface mode.

Preferably, each retaining structure has an arc-shaped projection, and an outer arc surface of each arc-shaped projection is in linear contact with inner wall surfaces of two butting grooves inside the adapter.

Preferably, the spring arm has two limiting parts on two sides, each limiting part is adjacent to the outer wall surface of the coupling piece, and when the pressing part of the pressing piece is located at the pressing position, each limiting part abuts against the outer wall surface of the coupling piece.

Preferably, the pressing piece is provided with a plurality of friction parts for the contact of the hand, each friction part is arranged on the pressing part, the pressing part is contacted with the top of the spring arm, and the pressing piece is provided with an extension section which is positioned between the pressing part and the sleeving part.

Preferably, the frame body is provided with a plurality of buckling parts and a fixed block, the outer wall surface of the coupling piece is provided with a plurality of buckling parts, each buckling part is respectively buckled on each buckling part, and the fixed block is limited on the outer wall surface of the coupling piece.

Preferably, the frame has recesses on both sides, each recess corresponding to a protrusion on both sides of the interior of the adapter.

Preferably, the pressing piece is provided with a fixing block, the fixing block is arranged at the sleeving part, the outer wall surface of the sleeve is provided with a fixing groove, and the fixing block is buckled in the fixing groove.

Preferably, the pressing piece is provided with a buckling part, the buckling part is arranged at the sleeving part, the outer wall surface of the sleeve is provided with a buckling part, and the buckling part is buckled at the buckling part.

Preferably, the sleeve joint part is provided with a buckling hole, two sides of the inner wall of the buckling hole are provided with limiting parts, two sides of the sleeve are provided with positioning parts, and each limiting part is respectively combined with each positioning part.

Preferably, the coupling member has a butt joint portion located on an inner wall surface of the accommodating space and adjacent to the opening, and the sleeve has a joint portion coupled to the joint portion.

In summary, according to some embodiments, the metal retaining member of the optical fiber connector is fastened to the adapter by a metal member, so as to prolong the service life of the optical fiber connector; secondly, according to some embodiments, arc-shaped protruding blocks are arranged on two sides of the elastic arm of the metal retaining piece, so that the structural strength is improved; furthermore, according to some embodiments, the spring arm is provided with a limiting part for preventing excessive pressing, so as to avoid deformation of the spring arm.

Drawings

FIG. 1 is a schematic diagram showing the appearance of a prior art optical fiber connector.

FIG. 2 is a schematic side view of a prior art fiber optic connector with an adapter.

FIG. 3 is a schematic diagram of an external view of a fiber optic connector, according to some embodiments.

FIG. 4 illustrates an exploded view of the front face of a fiber optic connector without the core tube assembly exploded, according to some embodiments.

FIG. 5 illustrates an exploded view of the front face of a fiber optic connector, exploded out of the core tube assembly, according to some embodiments.

FIG. 6 illustrates an exploded view of the back side of the fiber optic connector, exploded out of the core tube assembly, according to some embodiments.

FIG. 7 is a schematic view of another pressing member according to some embodiments.

FIG. 8 illustrates an exploded view of a fiber optic connector and an adapter, according to some embodiments.

FIG. 9 is a schematic side view of a fiber optic connector with an adapter according to some embodiments.

FIG. 10 is a schematic side view of a fiber optic connector after mating with an adapter, according to some embodiments.

FIG. 11 is a schematic diagram illustrating the appearance of a single fiber optic connector, according to some embodiments.

FIG. 12 is a schematic diagram illustrating the appearance of a metal backstop according to some embodiments.

FIG. 13 is a schematic side view of a fiber optic connector after mating with an adapter, according to some embodiments.

Symbol description

100 optical fiber connector

1 coupling element

10 accommodating space

11 opening(s)

112 fastening part

17 butt joint part

2 core tube assembly

21 contact pin

25 spring

3 sleeve pipe

312 fastening part

33 fixing groove

36 positioning part

37 joint portion

4, metal backstop

41 frame body

412 fastening part

414 concave part

42 spring arm

421 limit part

43 fixed block

44 backstop structure

442 flour

45 arc-shaped convex block

451 extrados surface

452 line

5 pressing piece

51 socket joint

511 button hole

512 fastening part

52 pressing part

521 Friction part

53 fixed block

56 spacing part

57 extension section

7 compression member

8 tail sleeve

9 adapter

914 convex portion

95 butt joint groove

P1 pressing position

P2:home position

A-fiber connector

A1 optical fiber housing

A2 elastic arm

A21 stop block

B adapter

B1, buckling holes.

Description of the embodiments

Referring to fig. 3, fig. 3 is an external schematic view of the optical fiber connector 100; in some embodiments, the fiber optic connector 100 is suitable for use on equipment in the telecommunications, indoor cabling, industrial, military, aerospace, or medical industries, such as aircraft components, connected by the fiber optic connector 100. In some embodiments, the fiber optic connector 100 includes a coupling member 1, a core tube assembly 2, a ferrule 3, a metal backstop 4, and a push-on 5 (as shown in fig. 4).

The coupling element 1 has a receiving space 10 (as shown in fig. 5) and a plurality of openings 11, and each opening 11 is located at two ends of the coupling element 1 and is communicated with the receiving space 10 (as shown in fig. 5 and 6); the core tube assembly 2 is arranged in the accommodating space 10; the sleeve 3 is combined with the opening 11; the metal retaining member 4 has a frame 41, the frame 41 is combined with one end of the coupling member 1, the metal retaining member 4 comprises a spring arm 42, the spring arm 42 extends obliquely from the frame 41 toward the other end of the coupling member 1, and two sides of the spring arm 42 are respectively provided with at least one retaining structure 44; the pressing member 5 has a socket portion 51 and a pressing portion 52, the socket portion 51 is socket-coupled to the sleeve 3, and the pressing portion 52 extends from the socket portion 51 to the arm.

After the coupling element 1 and the metal retaining element 4 are assembled, the metal retaining element 4 made of complete metal is used for abutting against the adapter 9 (as shown in fig. 9), so that the firm metal retaining element 4 can prevent damage, the service life of the optical fiber connector 100 is prolonged, and the metal retaining element 4 has the functions of high temperature resistance and low temperature resistance.

In some embodiments, two coupling members 1 are used (as shown in fig. 3), but not limited thereto, in one embodiment, one coupling member 1 may be used (as shown in fig. 11), or three or more coupling members 1 may be used: in some embodiments, two coupling members 1 cooperate to use one pressing member 3 structure, but not limited to, in some embodiments, one coupling member 1 may cooperate to use one pressing member 3 structure, or more than three coupling members 1 may use only one pressing member 3 structure.

Referring to fig. 3, in some embodiments, two coupling members 1 are each assembled with a core tube assembly 2 to form a dual-core type fiber optic connector 100, which has the advantage of saving wiring space.

Referring to fig. 3, in some embodiments, two coupling members 1 are used as an illustration, the coupling members 1 are arranged side by side, each coupling member 1 has a rectangular parallelepiped structure, and a space area is provided between the coupling members 1, and the space area is a gap reserved between the coupling members 1.

Referring to fig. 5 to 6, fig. 5 is an exploded view of the front surface of the optical fiber connector 100, in which the core tube assembly 2 is exploded, and fig. 6 is an exploded view of the rear surface of the optical fiber connector 100, in which the core tube assembly 2 is exploded. In some embodiments, a core tube assembly 2 is disposed within the coupling 1, the core tube assembly 2 including a pin 21 and a spring 25; the contact pin 21 is positioned at the opening 11, the contact pin 21 is combined with a core tube made of ceramic material, the core tube is used for coating the optical fiber, the optical fiber is cut into a core hole of Yu Xinguan, and the contact pin 21 is positioned at one end of the core tube; the sleeve 3 is made of metal materials, one end of the sleeve 3 is sleeved with the other end of the core tube, the other end of the sleeve 3 is connected with the compression piece 7 (shown in fig. 4), the compression piece 7 is combined with the tail sleeve 8, the tail sleeve 8 is sleeved on the outer surface of the transmission wire, the compression piece 7 increases the pulling force, and the optical fiber connector 100 is prevented from being separated from the outer surface of the wire when the wire is pulled by force; the sleeve 3 is assembled at the rear end of the coupling piece 1; the spring 25 is sleeved at the other end of the core tube, the spring 25 is arranged in the sleeve 3, one end of the spring 25 abuts against the core tube, the other end of the spring 25 abuts against the sleeve 3, and the spring 25 is used for buffering the core tube.

Referring to fig. 5 to 6, in some embodiments, the socket portion 51 of the pressing member 5 is a ring, the socket portion 51 has a fastening hole 511, two sides of an inner wall of the fastening hole 511 have a limiting portion 56, two sides of the sleeve 3 have positioning portions 36, each limiting portion 56 is respectively combined with each positioning portion 36, the limiting portion 46 and the positioning portion 36 have corresponding planar structures, and the socket portion 51 and the sleeve 3 are limited from rotating relative to each other.

Referring to fig. 5 to 6, in some embodiments, the pressing portion 52 of the pressing member 5 is an arc-shaped spring, the arc-shaped spring is integrated with the socket portion 51, and the arc-shaped spring extends outward from the top of the socket portion 51 to the top of the spring arm 42.

Referring to fig. 6, in some embodiments, the pressing member 5 has a plurality of friction portions 521 for contacting with the hand, each friction portion 521 is disposed on the pressing portion 52, and the pressing portion 52 contacts with the top of the spring arm 42; the friction force of the hand is increased by the friction parts 521, so that the hand feeling during pressing is improved.

Referring to fig. 5 to fig. 6, in some embodiments, the frame 41 has a plurality of fastening portions 412 and fixing blocks 43, the fastening portions 412 are bump structures on the inner side of the frame 41, the outer wall of the coupling element 1 has a plurality of fastening portions 112, the fastening portions 112 are groove structures on the outer wall of the coupling element 1, the fastening portions 412 are fastened to the fastening portions 112, and the fixing blocks 43 are limited on the outer wall of the coupling element 1; the fixing block 43 is a bending structure at the front end of the frame 41, the fixing block 43 abuts against the front end of the coupling piece 1, the displacement of the coupling piece 1 is limited, and the frame 41 is prevented from being separated from the coupling piece 1.

Referring to fig. 5 to 6, in some embodiments, the pressing member 5 has a fixing block 53, the fixing block 53 is disposed on the socket portion 51, the outer wall surface of the sleeve 3 has a fixing groove 33, and the fixing block 53 is fastened to the fixing groove 33 to increase structural strength; the fixing block 53 is a bending structure at the side of the sleeve part 51, the fixing block 53 is limited in the fixing groove 33 to limit the displacement of the pressing piece 5 and the sleeve 3, so as to increase the structural strength.

Referring to fig. 5 to 6, in some embodiments, the pressing member 5 has a fastening portion 512, the fastening portion 512 is disposed on the socket portion 51, and the outer wall surface of the sleeve 3 has a fastening portion 312; the fastening portions 512 are protruding structures on the inner side of the socket portion 51, the fastening portions 312 are recessed structures on the outer wall of the sleeve 3, and each fastening portion 512 is fastened to each fastening portion 312 to limit displacement of the pressing member 5 and the sleeve 3.

Referring to fig. 6, in some embodiments, the coupling element 1 has a docking portion 17, the docking portion 17 is located on an inner wall surface of the accommodating space 10 and adjacent to the opening 11, the sleeve 3 has a joint portion 37, and the docking portion 17 is combined with the joint portion 37; in some embodiments, the abutting portion 17 is an internal thread, the engaging portion 37 is an external thread, and the internal thread and the external thread are in threaded engagement, but not limited thereto; in some embodiments, the abutting portion 17 and the engaging portion 37 may be engaged with each other in a concave-convex structure, or the abutting portion 17 and the engaging portion 37 may be engaged with each other in an interference-tightening manner.

In some embodiments, the pressing member 5 has an extension 57, where the extension 57 is located between the pressing portion 52 and the socket portion 51, and the extension 57 may be a single plate (as shown in fig. 6) or a plurality of plates (as shown in fig. 7).

Referring to fig. 5 and 8, fig. 8 is an exploded view of the optical fiber connector 100 and the adapter 9. In some embodiments, the housing 41 has recesses 414 on both sides, each recess 414 corresponding to a protrusion 914 on both sides of the interior of the adapter 9.

Referring to fig. 9, in some embodiments, when the pressing portion 52 of the pressing member 5 is located at the pressing position P1, the rear end of the spring arm 42 is pushed downward by the pressing portion 52, so that the spring arm 42 drives each retaining structure 44 to displace downward inside the adapter 9.

Referring to fig. 9, in some embodiments, two sides of the spring arm 42 are respectively provided with a limiting portion 421, and each limiting portion 421 is adjacent to an outer wall surface of the coupling element 1; when the pressing portion 52 of the pressing member 5 is located at the pressing position P1, each of the limiting portions 421 abuts against the outer wall surface of the coupling member 1 to limit the downward displacement distance of the spring arm 42, so as to prevent the spring arm 42 from being excessively pressed and prevent the spring arm 42 from being unable to return to the elastic force after being deformed.

Referring to fig. 9, fig. 9 is a schematic side view of the optical fiber connector 100 when plugged into the adapter 9; in some embodiments, each retaining structure 44 has an arc-shaped bump 45 (or may be a tapered bump), and each retaining structure 44 protrudes outwards from two sides of the spring arm 42; when the optical fiber connector 100 is plugged into the adapter 9, the outer arc surface 451 of the arc-shaped protruding block 45 of each retaining structure 44 contacts the inner wall surfaces of the two butting grooves 95 (as shown in fig. 10) inside the adapter 9 in a line 452 mode, each arc-shaped protruding block 45 is firmly buckled to each butting groove 95 to prevent disengagement, and the structure of the arc-shaped protruding block 45 has the function of increasing the structural strength.

In some embodiments, as shown in the cross-section of the arc-shaped bump 45 in fig. 10, the arc-shaped bump 45 is a curved structure beyond a semicircle (or oval), and the area beyond the semicircle curved structure has the strength of increasing the structure of the arc-shaped bump 45. In some embodiments, the arc-shaped protruding block 45 shown in fig. 10 is curved toward the coupling element 1 (downward), but not limited thereto, and in some embodiments, the arc-shaped protruding block 45 shown in fig. 10 may be curved away from the coupling element 1.

Referring to fig. 10, fig. 10 is a schematic side view of the optical fiber connector 100 after plugging into the adapter 9. In some embodiments, when the pressing portion 52 of the pressing member 5 is located at the original position P2, a height is formed between the rear end of the spring arm 42 and the outer surface of the coupling member 1, the pressing portion 52 contacts the top of the rear end of the spring arm 42, and the spring arm 42 moves upward to the original position P2 due to the resilience force, so that the spring arm 42 drives each retaining structure 44 to move upward, and the arc-shaped protrusions 45 of each retaining structure 44 are fastened to the two abutting grooves 95 of the adapter 9, so that the optical fiber connector 100 is fastened inside the housing of the adapter 9.

Referring to fig. 12 and 13, fig. 12 is a schematic view of the metal retaining member 4, and fig. 13 is a schematic side view of the optical fiber connector 100 after being plugged into the adapter 9; in some embodiments, each retaining structure 44 projects outwardly from each side of the spring arm 42; after the optical fiber connector 100 is plugged into the adapter 9, the end surfaces of the retaining structures 44 are contacted with the inner wall surfaces of the two butting grooves 95 in the adapter 9 in a surface 442 mode, the end surfaces of the retaining structures 44 are firmly buckled with the butting grooves 95 to prevent disengagement, and the structures of the retaining structures 44 have the function of increasing the structural strength.

Claims

1. An optical fiber connector, characterized in that:

the coupling piece is provided with an accommodating space and a plurality of openings, and each opening is positioned at two ends of the coupling piece and communicated with the accommodating space;

a core tube assembly disposed in the receiving space;

a sleeve coupled to the opening;

the metal retaining piece is provided with a frame body, the frame body is combined with one end of the coupling piece, the metal retaining piece comprises an elastic arm, the elastic arm obliquely extends from the frame body to the other end of the coupling piece, and two sides of the elastic arm are respectively provided with at least one retaining structure; and

the pressing piece is provided with a sleeving part and a pressing part, the sleeving part is sleeved on the sleeve, and the pressing part extends from the sleeving part to the spring arm.

2. The fiber optic connector of claim 1, wherein: each retaining structure protrudes outwards from two sides of the spring arm, and each retaining structure is contacted with the inner wall surfaces of two butt joint grooves inside an adapter in a one-sided mode.

3. The fiber optic connector of claim 1, wherein: each of the retaining structures has an arc-shaped projection, and an outer arc surface of each of the arc-shaped projections is in line contact with inner wall surfaces of two butting grooves inside an adapter.

4. The fiber optic connector of claim 1, wherein: the elastic arm is provided with a limiting part on two sides respectively, each limiting part is adjacent to the outer wall surface of the coupling piece, and when the pressing part of the pressing piece is positioned at a pressing position, each limiting part is abutted against the outer wall surface of the coupling piece.

5. The fiber optic connector of claim 1, wherein: the pressing piece is provided with a plurality of friction parts for contact of hands, each friction part is arranged on the pressing part, the pressing part is contacted with the top of the spring arm, and the pressing piece is provided with an extension section which is positioned between the pressing part and the sleeving part.

6. The fiber optic connector of claim 1, wherein: the frame body is provided with a plurality of buckling parts and a fixed block, the outer wall surface of the coupling piece is provided with a plurality of buckling parts, each buckling part is respectively buckled with each buckling part, and the fixed block is limited on the outer wall surface of the coupling piece.

7. The fiber optic connector of claim 6, wherein: the two sides of the frame body are provided with a concave part, and each concave part corresponds to a convex part on two inner sides of an adapter.

8. The fiber optic connector of claim 1, wherein: the pressing piece is provided with a fixing block, the fixing block is arranged at the sleeving part, a fixing groove is formed in the outer wall surface of the sleeve, and the fixing block is buckled to the fixing groove.

9. The fiber optic connector of claim 8, wherein: the pressing piece is provided with a buckling part, the buckling part is arranged on the sleeving part, the outer wall surface of the sleeve is provided with a buckling part, and the buckling part is buckled on the buckling part.

10. The fiber optic connector of claim 1, wherein: the sleeve joint part is provided with a buckling hole, two sides of the inner wall of the buckling hole are provided with limiting parts, two sides of the sleeve pipe are provided with positioning parts, and each limiting part is respectively combined with each positioning part.

11. The fiber optic connector of claim 1, wherein: the coupling piece is provided with a butt joint part, the butt joint part is positioned on the inner wall surface of the accommodating space and adjacent to the opening, the sleeve is provided with a joint part, and the butt joint part is combined with the joint part.