CN113391405A

CN113391405A - Small-size fiber connector

Info

Publication number: CN113391405A
Application number: CN202110739365.6A
Authority: CN
Inventors: 关宇; 胡伟丹; 李青青; 郑涛; 其他发明人请求不公开姓名
Original assignee: Seikoh Giken Hangzhou Co ltd
Current assignee: Seikoh Giken Hangzhou Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-09-14

Abstract

The invention discloses a small-sized optical fiber connector, which comprises an optical fiber, a propelling part, an elastic resetting part, a sleeve, a positioning key, an adapter shell, a sleeve and a pin inserting part, wherein a through cavity structure is formed in the adapter shell; a positioning bulge is formed on the positioning key, a positioning groove is formed in the end face of the adapter shell, and the positioning groove is matched with the positioning bulge. This connector structure is small and exquisite compact, and is protruding through forming the location on the navigation key, has seted up the constant head tank at adapter housing end face, sets up constant head tank and the protruding looks adaptation in location, can effectively fix contact pin and optic fibre, can also restrict contact pin and optic fibre simultaneously and rotate in the adapter, and then make optic fibre can dock and can not lead to the angle skew to produce energy loss because of rotating with fixed angle.

Description

Small-size fiber connector

Technical Field

The invention belongs to the technical field of optical fiber communication, and particularly relates to a small optical fiber connector.

Background

In the current technology in the field of optical fiber communication, standard optical fiber connectors, such as LC type connectors specified in IEC 61754-20, are often used in the optical fiber interconnection scenario in a small space on a motherboard. The standard connector is mature in technology and wide in application, but is not specially designed for onboard or narrow use environments, and has the problems of large connector volume, multiple mounting and dismounting steps, inconvenience in operation, high space requirement and the like.

In order to solve The above technical problems, The U.S. patent publication No. US6616343B2 discloses The optical fiber positioning member, which has a small volume and can be used for board connection, but it adopts a spring clamping mechanism, which is not high in reliability due to unstable elasticity, and lacks an angle retaining structure, and does not support angle grinding for a circular ferrule, thus having a great limitation.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention aims to provide a small optical fiber connector which is small and compact in structure, convenient and practical, can be applied to the high-class narrow environment on a board, can ensure the use effect, enhances the use experience of a user, and is beneficial to popularization and application of the small optical fiber connector in the market.

In order to achieve the purpose, the invention adopts the following technical scheme that the small-sized optical fiber connector comprises an optical fiber, a propelling piece, an elastic resetting piece, a sleeve, a positioning key, an adapter shell, a sleeve and a pin inserting component, wherein a through cavity structure is formed inside the adapter shell, the sleeve is installed in the adapter shell to form an adapter, and the elastic resetting piece is installed between the propelling piece and the positioning key and sleeved outside the optical fiber; the adapter shell is characterized in that a positioning bulge is formed on the positioning key, a positioning groove is formed in the end face of the adapter shell, and the positioning groove is matched with the positioning bulge.

In a preferred embodiment of the present invention, a locking structure is provided between the pushing member and the adaptor housing.

As a preferable aspect of the present invention, the locking structure is one of a thread structure, a snap structure, a protrusion structure, and a groove structure.

As a preferable scheme of the present invention, a stopping step is formed on a circumferential surface of the cylindrical pushing member, a locking groove adapted to the stopping step is formed in the adapter housing, and the stopping step is embedded in the locking groove to achieve locking between the pushing member and the adapter.

As a preferable scheme of the present invention, the pin member includes a pin and a flange, the flange has a polygonal structure, and a polygonal groove adapted to the flange is formed inside the positioning key.

As a preferable aspect of the present invention, the adapter housing includes a first housing and a second housing, and the first housing and the second housing are provided to be openable and closable.

In a preferred embodiment of the present invention, the sleeve is mounted in the middle of the cavity of the adapter housing.

As a preferable scheme of the present invention, the pushing member, the elastic restoring member, the sleeve and the positioning key are assembled to form a connector assembly.

In a preferred embodiment of the present invention, the sleeve is riveted to the pin member, and a tail portion of the sleeve is turned outward to form an outward turned rivet portion that fits the stopper step.

In a preferred embodiment of the present invention, the elastic restoring member is a spring.

Compared with the prior art, the invention has the following beneficial effects: according to the small-sized optical fiber connector, the structure is small and compact, the positioning protrusions are formed on the positioning keys, the positioning grooves are formed in the end face of the shell of the adapter, the positioning grooves and the positioning protrusions are arranged in a matched mode, the inserting needle and the optical fiber can be effectively fixed, meanwhile, the inserting needle and the optical fiber can be limited to rotate in the adapter, further, the optical fiber can be in butt joint at a fixed angle, energy loss caused by angle deviation due to rotation cannot occur, the use effect is guaranteed, the use experience of a user is enhanced, and popularization and application of the small-sized optical fiber connector in the market are facilitated.

Drawings

FIG. 1 is a schematic structural diagram of a miniature fiber optic connector according to an embodiment;

FIG. 2 is a cross-sectional view of a compact fiber optic connector according to one embodiment;

FIG. 3 is a schematic diagram of an embodiment of a positioning key in a miniature fiber optic connector;

FIG. 4 is a schematic diagram of a pushing member of the miniature fiber optic connector according to one embodiment;

FIG. 5 is a schematic structural diagram of an adapter housing in a miniature fiber optic connector according to an embodiment;

FIG. 6 is a schematic diagram of the internal structure of the adapter housing in the compact fiber optic connector according to one embodiment;

FIG. 7 is a schematic structural diagram of a pin member in a miniature fiber optic connector according to an embodiment;

FIG. 8 is a schematic diagram illustrating a connection state of a small-sized optical fiber connector according to an embodiment.

Reference numerals: 1. an optical fiber; 2. a pusher member; 20. a stopping step; 3. an elastic reset member; 4. a sleeve; 40. outwards turning the riveting part; 5. a positioning key; 50. a polygonal groove; 51. positioning the projection; 6. an adapter housing; 60. positioning a groove; 61. a sleeve mounting position; 62. a locking clamping groove; 63. a first housing; 64. a second housing; 7. a sleeve; 8. a pin member; 80. inserting a pin; 81. a flange; A. and (6) riveting the parts.

Detailed Description

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

Example (b): as shown in fig. 1 to 8, a small-sized optical fiber connector includes an optical fiber 1, a pusher 2, an elastic restoring member 3, a sleeve 4, a positioning key 5, an adapter housing 6, a ferrule 7, and a pin member 8, wherein a through cavity structure is formed in the adapter housing 6, and the ferrule 7 is mounted in the adapter housing 6 to form an adapter. Above-mentioned elasticity resets 3 and installs between above-mentioned propulsion member 2 and above-mentioned navigation key 5 and the suit outside above-mentioned optic fibre 1, propulsion member 2, sleeve 4 and navigation key 5 all overlap outside optic fibre 1, in order to effectively fix contact pin 80 and optic fibre 1, simultaneously can also restrict contact pin 80 and optic fibre 1 and rotate in the adapter, and then make optic fibre 1 can dock and can not produce energy loss because of rotating the angle skew with fixed angle, guarantee the result of use, reinforcing user's use is experienced, form location arch 51 on above-mentioned navigation key 5, constant head tank 60 has been seted up to 6 terminal surfaces of above-mentioned adapter housing, above-mentioned constant head tank 60 and the protruding 51 looks adaptations of above-mentioned location.

In order to further realize fixed connection between the adapter and the propelling part 2 and ensure the stability of the machine in the using process, the locking structure matched with the propelling part 2 is simultaneously arranged at the position, close to the end face, of the adapter, and the locking structure is one of a threaded structure, a buckling structure, a protruding structure or a groove structure, can also be used as other locking structures, and is not only limited to the structure.

The locking structure in this embodiment is a protruding structure, a plurality of stopping steps 20 are formed on the circumferential surface of the cylindrical propelling member 2, the stopping steps 20 are distributed at equal intervals along the circumferential surface of the propelling member 2, a locking slot 62 adapted to the stopping steps 20 is formed inside the adapter housing 6, and the stopping steps 20 are embedded in the locking slot 62 to lock the propelling member 2 and the adapter, thereby preventing rotation.

The pin member 8 includes a pin 80 and a flange 81, the flange 81 is a polygonal structure, and a polygonal groove 50 adapted to the flange 81 is formed inside the positioning key 5, so as to fix the pin member 8 in the positioning key 5 and prevent the pin 80 from rotating.

In order to facilitate the installation and reduce the operation difficulty, the adapter housing 6 is configured to include a first housing 63 and a second housing 64, the first housing 63 and the second housing 64 are openably and closably disposed, the sleeve 7 is installed in the open and closed state, and then the first housing 63 and the second housing 64 are closed and fixed.

The sleeve 7 is arranged at the sleeve mounting position 61 in the middle of the cavity of the adapter shell 6, the sleeve 7 is used for keeping the central axes of the two contact pins 80 on the two sides of the adapter to be positioned on the same straight line, so that the light wave is ensured to be transmitted along the axial straight line, the light energy loss is reduced, and the high-reliability stable transmission of signals is realized. The sleeve 7 is arranged in the middle of the cavity of the adapter shell 6, so that the optical fibers 1 on two sides of the adapter can be further conveniently and tightly butted.

The elastic reset piece 3 can be a spring with simple structure and convenient use, provides elasticity through the spring, so that the contact pins 80 at two ends are tightly butted in the adapter, the optical fibers 1 in the contact pins 80 are tightly butted, the continuous transmission of optical energy is realized, and the energy loss is reduced. The pushing piece 2, the spring, the sleeve 4 and the positioning key 5 are sleeved on the optical fiber 1 and assembled to form a connector whole. The propelling part 2 pushes the spring, the sleeve 4, the positioning key 5 and the pin inserting part 8 to enter the adapter, after the spring is compressed, the stopping step 20 on the periphery of the propelling part 2 is matched and locked with the locking clamping groove 62 on the end face of the adapter, and the connector is prevented from being separated from the adapter.

The sleeve 4 is riveted to the needle member 8 by riveting the sleeve 4 at the riveting portion a, and the tail portion of the sleeve 4 is turned outward to form an outward turned rivet portion 40 that engages with the stopper step 20, thereby preventing the pusher 2 from slipping back.

In the small-sized optical fiber connector in the embodiment, the optical fiber 1, the pin component 8, the pushing component 2, the spring, the sleeve 4 and the positioning key 5 are assembled into a connector whole, the optical fiber 1 and the pin component 8 are firmly bonded, and the adapter is assembled by the adapter shell 6 and the sleeve 7. The positioning key 5 is sleeved on the pin inserting component 8, and the polygonal inner cavity of the positioning key is matched and fixed with the polygonal flange 81 of the pin inserting component 8. The sleeve 4 is fixed with the pin component 8 in a riveting or bonding mode, and the tail part of the sleeve 4 is turned outwards to be riveted laterally to prevent the pushing piece 2 from sliding. The pusher 2 pushes the spring to provide elasticity to the pin member 8 so that the end faces of the pins 80 can be closely butted when the connectors are butted in the adapter. In the process of inserting the connector into the adapter, the positioning key 5 is matched with the groove of the adapter to ensure that the pin inserting component 8 cannot rotate; after the plug-in is in place, the stop step 20 on the periphery of the pushing piece 2 is matched with the locking clamping groove 62 of the adapter, so that the connector is locked and fixed, and the connection is ensured to be in place.

A small-size fiber connector in this embodiment, this connector structure is small and exquisite compact, through form location arch 51 on navigation key 5, constant head tank 60 has been seted up at adapter casing 6 terminal surface, set up constant head tank 60 and the protruding 51 looks adaptation in location, can effectively fix contact pin 80 and optic fibre 1, simultaneously can also restrict contact pin 80 and optic fibre 1 and rotate in the adapter, and then make optic fibre 1 can dock with fixed angle and can not lead to the angle skew to produce energy loss because of rotating, guarantee the result of use, strengthen user's use and experience, be favorable to the popularization and the application of above-mentioned small-size fiber connector on market.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Although the reference numerals in the figures are used more here: 1. an optical fiber; 2. a pusher member; 20. a stopping step; 3. an elastic reset member; 4. a sleeve; 40. outwards turning the riveting part; 5. a positioning key; 50. a polygonal groove; 51. positioning the projection; 6. an adapter housing; 60. positioning a groove; 61. a sleeve mounting position; 62. a locking clamping groove; 63. a first housing; 64. a second housing; 7. a sleeve; 8. a pin member; 80. inserting a pin; 81. a flange; A. rivet, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. A miniature fiber optic connector, comprising: the optical fiber connector comprises an optical fiber (1), a propelling part (2), an elastic resetting part (3), a sleeve (4), a positioning key (5), an adapter shell (6), a sleeve (7) and a pin inserting part (8), wherein a penetrating cavity structure is formed inside the adapter shell (6), the sleeve (7) is installed in the adapter shell (6) to form an adapter, and the elastic resetting part (3) is installed between the propelling part (2) and the positioning key (5) and sleeved outside the optical fiber (1); form location arch (51) on navigation key (5), constant head tank (60) have been seted up to adapter casing (6) terminal surface, constant head tank (60) with location arch (51) looks adaptation.

2. A miniature optical fiber connector according to claim 1, wherein: and a locking structure is arranged between the propelling piece (2) and the adapter shell (6).

3. A miniature optical fiber connector according to claim 2, wherein: the locking structure is one of a thread structure, a buckle structure, a convex structure or a groove structure.

4. A miniature optical fiber connector according to claim 2, wherein: be cylindric the circumferential surface of propulsion piece (2) is formed with backstop step (20), inside formation of adapter casing (6) with locking draw-in groove (62) of backstop step (20) looks adaptation, through with backstop step (20) are inlayed and are located realize in locking draw-in groove (62) propulsion piece (2) with locking between the adapter.

5. A miniature optical fiber connector according to claim 4, wherein: the pin component (8) comprises a pin (80) and a flange (81), the flange (81) is of a polygonal structure, and a polygonal groove (50) matched with the flange (81) is formed in the positioning key (5).

6. A miniature optical fiber connector according to claim 5, wherein: the adapter housing (6) comprises a first housing (63) and a second housing (64), and the first housing (63) and the second housing (64) are arranged in an openable and closable mode.

7. A miniature optical fiber connector according to claim 6, wherein: the sleeve (7) is arranged in the middle of the cavity of the adapter shell (6).

8. A miniature optical fiber connector according to claim 7, wherein: the pushing piece (2), the elastic reset piece (3), the sleeve (4) and the positioning key (5) are assembled to form a connector whole.

9. A miniature optical fiber connector according to claim 8, wherein: the sleeve (4) is riveted on the pin inserting component (8), and the tail part of the sleeve (4) is outwards turned and riveted to form an outwards turned riveting part (40) matched with the stopping step (20).

10. A miniature optical fiber connector according to claim 9, wherein: the elastic reset piece (3) is a spring.