阅读说明：本技术 一种加固性防转的扩束光纤接触件 (Reinforced anti-rotation beam expanding optical fiber contact ) 是由 卢贵斌 于 2020-05-13 设计创作，主要内容包括：本发明公开了一种加固性防转的扩束光纤接触件,包括光纤插针及光纤插孔；本发明采用在光纤插针的针壳体上设置了导向柱,在光纤插孔的孔壳体上设置了导向孔,当光纤插针与光纤插孔插接时,针壳体的导向柱首先与孔壳体的导向孔接触、插接并导向,保证了光纤插针与光纤插孔的同轴度,避免了第一扩束插芯与第二扩束插芯光路连接时轴线的偏差及插入损耗,保证了光信号的传输质量；本发明采用在针壳体的第一销孔及针尾柄的第一键槽间设置了第一防转销,在孔壳体的第二销孔及孔尾柄的第二键槽间设置了第二防转销,通过防转销与插头壳体及插座壳体的定位,保证第一扩束插芯与第二扩束插芯光路对接时径向角度一致,提高测试结果的重复一致性。(The invention discloses a reinforced anti-rotation beam expanding optical fiber contact element, which comprises an optical fiber contact pin and an optical fiber jack; according to the invention, the guide post is arranged on the needle shell of the optical fiber contact pin, the guide hole is arranged on the hole shell of the optical fiber jack, when the optical fiber contact pin is spliced with the optical fiber jack, the guide post of the needle shell is firstly contacted, spliced and guided with the guide hole of the hole shell, so that the coaxiality of the optical fiber contact pin and the optical fiber jack is ensured, the deviation of the axis and the insertion loss when the first beam expanding ferrule is connected with the second beam expanding ferrule in the optical path are avoided, and the transmission quality of optical signals is ensured; according to the invention, the first anti-rotation pin is arranged between the first pin hole of the pin shell and the first key groove of the pin tail handle, the second anti-rotation pin is arranged between the second pin hole of the hole shell and the second key groove of the hole tail handle, and the radial angles of the first beam expanding ferrule and the second beam expanding ferrule in butt joint are ensured to be consistent through the positioning of the anti-rotation pins, the plug shell and the socket shell, so that the repeated consistency of test results is improved.)

1. A reinforced anti-rotation beam expanding optical fiber contact member is characterized by comprising an optical fiber contact pin (1) and an optical fiber jack (2);

the optical fiber inserting needle (1) is composed of a first expanded beam inserting core (10), a protective tube (11), a ceramic sleeve (12), a first anti-rotation pin (13), a first nut (14), a needle shell (15), a needle tail handle (16), a first pressure welding sleeve (17), a needle sleeve (18) and a spring (19);

the needle shell (15) is a cylindrical part which is internally provided with a step hole and an internal thread and externally provided with an external thread and a guide column (151), and the wall of the needle shell is provided with a first pin hole (152);

the needle tail handle (16) is a cylindrical part provided with a step hole and a spring seat outside, and a first key groove (161) is arranged on the wall of the cylindrical part;

the needle sleeve (18) is a cylindrical part with an external thread at one end and a sleeve connecting opening at the other end;

the ceramic sleeve (12) is arranged in the protective tube (11), the needle tail handle (16) and the needle sleeve (18) are sequentially arranged in a step hole of the needle shell (15), and the external thread of the needle sleeve (18) is meshed with the internal thread of the needle shell (15);

the first beam expanding ferrule (10) is arranged in the ceramic sleeve (12) and the needle tail handle (16), and the spring (19) is arranged between a spring seat of the needle tail handle (16) and the needle sleeve (18);

the first anti-rotation pin (13) is arranged in a first pin hole (152) of the needle shell (15) and is bonded with a first key groove (161) of the needle tail handle (16);

the first crimping sleeve (17) is arranged on a sleeve connecting port of the needle sleeve (18);

the first nut (14) is arranged on the external thread of the needle shell (15) and is meshed with the external thread;

the optical fiber jack (2) is composed of a second expanded beam ferrule (20), a second anti-rotation pin (21), a second nut (22), a hole shell (23), a hole tail handle (24), a second compression joint sleeve (25) and a hole sleeve (26);

the hole shell (23) is a cylindrical part internally provided with a guide hole (231) and an internal thread and externally provided with an external thread, and the wall of the hole shell is provided with a second pin hole (232);

the hole tail handle (24) is a cylindrical part with a step hole arranged inside, and a second key groove (241) is arranged on the wall of the hole tail handle;

the hole sleeve (26) is a cylindrical part with an external thread at one end and a sleeve connecting opening at the other end;

the second expanded beam inserting core (20) is arranged in a hole tail handle (24), the hole tail handle (24) and a hole sleeve (26) are sequentially arranged in a hole shell (23), and the external thread of the hole sleeve (26) is meshed with the internal thread of the hole shell (23);

the second anti-rotation pin (21) is arranged in a second pin hole (232) of the hole shell (23) and is bonded with a second key groove (241) of the hole tail handle (24);

the second crimping sleeve (25) is arranged on the sleeve connecting opening of the hole sleeve (26);

the second nut (22) is arranged on the external thread of the hole shell (23) and is meshed with the external thread;

the optical fiber inserting needle (1) is connected with the optical fiber inserting hole (2) in an inserting mode, the guide column (151) of the needle shell (15) is connected with the guide hole (231) of the hole shell (23) in an inserting mode, and the first beam expanding inserting core (10) is connected with the second beam expanding inserting core (20) in an optical path mode.

2. The reinforced anti-rotation expanded beam optical fiber contact piece as claimed in claim 1, wherein the first expanded beam ferrule (10) and the second expanded beam ferrule (20) have the same structure and are composed of a lens (101), an inner plug core (102) and an outer plug core (103), and the lens (101) and the inner plug core (102) are sequentially arranged in the outer plug core (103).

Technical Field

The invention relates to the technical field of optical fiber connectors, in particular to a reinforced anti-rotation beam expanding optical fiber contact element.

Background

As the related art of expanded beam fiber contacts matures, more and more are used in connectors. According to relevant technical data and experimental test indication, the beam expanding optical fiber contact member can effectively increase the diameter of a light spot, greatly reduces the influence of dust on the performance of products, and brings an adverse effect at the same time, namely, the light beam is expanded, and the light spot can become very sensitive to the axis angle. When the beam expanding optical fiber contact element in the prior art is used in a connector, the outer ferrule is butted with the ceramic sleeve, when an optical cable at the tail end is heavy or the hole site for installing the beam expanding optical fiber contact element of the connector has deviation, the alignment and the deflection of the axis between the beam expanding optical fiber contact pin and the beam expanding optical fiber jack are completely realized by the matching of the outer ferrule and the ceramic sleeve, and the ceramic sleeve is a thin-walled ceramic piece with a groove, so that the ceramic sleeve has poor bending resistance and can be cracked under the action of larger bending stress, even if the ceramic sleeve is not cracked, the insertion loss can be increased due to the deviation of the axis angle generated between the beam expanding optical fiber contact pin and the beam expanding optical fiber jack, and the transmission; on the other hand, due to the limitation of the processing technology, certain ovality errors always exist in the radial direction during the part processing of the beam expanding optical fiber contact element, so that the indexes of insertion loss and the like caused by the fact that the radial angles of butt joint and insertion are inconsistent when the beam expanding optical fiber contact element after being assembled is tested independently and after being installed in a connector are caused to be different, and the repeated consistency of the test result is poor.

Disclosure of Invention

The invention aims to provide a reinforced anti-rotation expanded beam optical fiber contact element aiming at the defects of the prior art. According to the invention, the guide post is arranged on the needle shell of the optical fiber contact pin, the guide hole is arranged on the hole shell of the optical fiber jack, when the optical fiber contact pin is spliced with the optical fiber jack, the guide post of the needle shell is firstly contacted and spliced with the guide hole of the hole shell, and under the guiding action of the guide post of the needle shell and the guide hole of the hole shell, the coaxiality of the optical fiber contact pin and the optical fiber jack is ensured, the deviation of the axis and the insertion loss when the optical paths of the first beam expanding ferrule and the second beam expanding ferrule are connected are avoided, and the transmission quality of optical signals is ensured; according to the invention, the first anti-rotation pin is arranged between the first pin hole of the pin shell and the first key groove of the pin tail handle, the second anti-rotation pin is arranged between the second pin hole of the hole shell and the second key groove of the hole tail handle, and the first anti-rotation pin and the second anti-rotation pin are respectively positioned with the plug shell and the socket shell, so that the radial angles of the first beam expanding ferrule and the second beam expanding ferrule are consistent when optical paths are butted. According to the invention, the guide post of the needle shell is inserted into the guide hole of the hole shell, so that the rigid connection between the needle shell and the hole shell is enhanced, and the bending resistance of the connection between the needle shell and the hole shell is enhanced; by the arrangement of the anti-rotation pin, the repeated consistency of the test result is improved, and the working reliability of the product is improved.

The specific technical scheme for realizing the purpose of the invention is as follows:

a reinforced anti-rotation beam expanding optical fiber contact member is characterized by comprising an optical fiber contact pin and an optical fiber jack;

the optical fiber contact pin consists of a first beam expanding insertion core, a protective tube, a ceramic sleeve, a first anti-rotation pin, a first nut, a pin shell, a pin tail handle, a first compression joint sleeve, a pin sleeve and a spring;

the needle shell is a cylindrical part which is internally provided with a step hole and an internal thread and externally provided with an external thread and a guide post, and the wall of the needle shell is provided with a first pin hole;

the needle tail handle is a cylindrical part provided with a step hole and a spring seat outside, and a first key groove is formed in the wall of the cylindrical part;

the needle sleeve is a cylindrical part with an external thread at one end and a sleeve connecting opening at the other end;

the ceramic sleeve is arranged in the protective tube, the needle tail handle and the needle sleeve are sequentially arranged in the step hole of the needle shell, and the external thread of the needle sleeve is meshed with the internal thread of the needle shell;

the first beam expanding insertion core is arranged in the ceramic sleeve and the needle tail handle, and the spring is arranged between a spring seat of the needle tail handle and the needle sleeve;

the first anti-rotation pin is arranged in a first pin hole of the needle shell and is bonded with a first key groove of the needle tail handle;

the first crimping sleeve is arranged on the sleeve connecting port of the needle sleeve;

the first nut is arranged on the external thread of the needle shell and meshed with the external thread;

the optical fiber jack is composed of a second beam expanding ferrule, a second anti-rotation pin, a second nut, a hole shell, a hole tail handle, a second compression sleeve and a hole sleeve;

the hole shell is a cylindrical part internally provided with a guide hole and an internal thread and externally provided with an external thread, and a second pin hole is formed in the wall of the hole shell;

the hole tail handle is a cylindrical part with a step hole arranged inside, and a second key groove is formed in the wall of the hole tail handle;

the hole sleeve is a cylindrical part with an external thread at one end and a sleeve connecting opening at the other end;

the second beam expanding insertion core is arranged in the hole tail handle, the hole tail handle and the hole sleeve are sequentially arranged in the hole shell, and the external thread of the hole sleeve is meshed with the internal thread of the hole shell;

the second anti-rotation pin is arranged in a second pin hole of the hole shell and is bonded with a second key groove of the hole tail handle;

the second crimping sleeve is arranged on the sleeve connecting opening of the hole sleeve;

the second nut is arranged on the external thread of the hole shell and is meshed with the external thread;

the optical fiber contact pin is connected with the optical fiber jack in an inserting mode, the guide column of the pin shell is connected with the guide hole of the hole shell in an inserting mode, and the first beam expanding insertion core is connected with the second beam expanding insertion core in an optical path mode.

The first beam expanding insertion core and the second beam expanding insertion core have the same structure and are composed of a lens, an inner insertion core and an outer insertion core. And the lens and the inner inserting core are sequentially arranged in the outer inserting core.

According to the invention, the guide post is arranged on the needle shell of the optical fiber contact pin, the guide hole is arranged on the hole shell of the optical fiber jack, when the optical fiber contact pin is spliced with the optical fiber jack, the guide post of the needle shell is firstly contacted and spliced with the guide hole of the hole shell, and under the guiding action of the guide post of the needle shell and the guide hole of the hole shell, the coaxiality of the optical fiber contact pin and the optical fiber jack is ensured, the deviation of the axis and the insertion loss when the optical paths of the first beam expanding ferrule and the second beam expanding ferrule are connected are avoided, and the transmission quality of optical signals is ensured; according to the invention, the first anti-rotation pin is arranged between the first pin hole of the pin shell and the first key groove of the pin tail handle, the second anti-rotation pin is arranged between the second pin hole of the hole shell and the second key groove of the hole tail handle, and the first anti-rotation pin and the second anti-rotation pin are respectively positioned with the plug shell and the socket shell, so that the radial angles of the first beam expanding ferrule and the second beam expanding ferrule are consistent when optical paths are butted. According to the invention, the guide post of the needle shell is inserted into the guide hole of the hole shell, so that the rigid connection between the needle shell and the hole shell is enhanced, and the bending resistance of the connection between the needle shell and the hole shell is enhanced; by the arrangement of the anti-rotation pin, the repeated consistency of the test result is improved, and the working reliability of the product is improved.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural diagram of an optical fiber ferrule according to the present invention; (ii) a

FIG. 3 is a schematic view of a fiber receptacle according to the present invention;

FIG. 4 is a schematic view of the construction of the needle tail shaft of the present invention;

FIG. 5 is a schematic view of the construction of the hole shank of the present invention;

FIG. 6 is a schematic structural view of a first expanded beam ferrule of the present invention;

FIG. 7 is a schematic view of the installation of the optical fiber stub and the plug housing;

FIG. 8 is a schematic view of the installation of the fiber optic receptacle and the receptacle housing.

Detailed Description

Referring to fig. 1, the present invention includes an optical fiber pin 1 and an optical fiber socket 2;

referring to fig. 1 and 2, the optical fiber stub 1 is composed of a first expanded beam ferrule 10, a protection tube 11, a ceramic sleeve 12, a first anti-rotation pin 13, a first nut 14, a pin housing 15, a pin tail handle 16, a first crimping sleeve 17, a pin sleeve 18 and a spring 19;

the needle housing 15 is a cylindrical member having a stepped hole and an internal thread formed therein and an external thread and a guide post 151 formed thereon, and a first pin hole 152 is formed in a wall thereof.

Referring to fig. 1, 2 and 4, the needle tail 16 is a cylindrical member with a stepped hole therein and a spring seat outside, and a first key slot 161 is formed on the wall of the cylindrical member.

Referring to fig. 1 and 2, the needle cannula 18 is a cylindrical member with an external thread at one end and a sleeve connecting opening at the other end;

the ceramic sleeve 12 is arranged in the protective tube 11, the needle tail handle 16 and the needle sleeve 18 are sequentially arranged in a step hole of the needle shell 15, and the external thread of the needle sleeve 18 is meshed with the internal thread of the needle shell 15;

the first expanded beam inserting core 10 is pressed in the needle tail handle 16 and arranged in the ceramic sleeve 12, and the spring 19 is arranged between a spring seat of the needle tail handle 16 and the needle sleeve 18;

the first anti-rotation pin 13 is arranged in the first pin hole 152 of the needle housing 15 and is bonded with the first key groove 161 of the needle tail shank 16;

the first crimping sleeve 17 is arranged on the sleeve connecting port of the needle sleeve 18;

the first nut 14 is provided on and engages with the external thread of the needle housing 15.

Referring to fig. 1 and 3, the optical fiber jack 2 is composed of a second expanded beam ferrule 20, a second anti-rotation pin 21, a second nut 22, a hole housing 23, a hole tail handle 24, a second crimping sleeve 25 and a hole sleeve 26;

the hole housing 23 is a cylindrical member with a guide hole 231 and an internal thread inside and an external thread outside, and a second pin hole 232 is formed on the wall of the hole housing.

Referring to fig. 1, 3 and 5, the hole tail handle 24 is a cylindrical member with a stepped hole therein, and a second key groove 241 is formed on the wall of the cylindrical member.

Referring to fig. 1 and 3, the hole sleeve 26 is a cylindrical member with an external thread at one end and a sleeve receiving opening at the other end;

the second expanded beam ferrule 20 is press-fitted in the hole tail handle 24, the hole tail handle 24 and the hole sleeve 26 are sequentially arranged in the hole shell 23, and the external thread of the hole sleeve 26 is meshed with the internal thread of the hole shell 23;

the second anti-rotation pin 21 is arranged in the second pin hole 232 of the hole shell 23 and is bonded with the second key groove 241 of the hole tail handle 24;

the second crimping sleeve 25 is arranged on the sleeve connecting opening of the hole sleeve 26;

the second nut 22 is provided on and engaged with the external thread of the bore housing 23.

Referring to fig. 1, 2, 3 and 6, the optical fiber stub 1 is inserted into the optical fiber receptacle 2, the guide post 151 of the stub housing 15 is inserted into the guide hole 231 of the bore housing 23, and the first expanded beam ferrule 10 is optically connected to the second expanded beam ferrule 20.

Referring to fig. 1 and 6, the first expanded beam ferrule 10 and the second expanded beam ferrule 20 have the same structure and are composed of a lens 101, an inner insert core 102 and an outer insert core 103. And the lens 101 and the inner ferrule 102 are sequentially disposed within the outer ferrule 103.

The invention works as follows:

referring to fig. 1, 2, 3, 7 and 8, the pin housing 15 of the optical fiber ferrule 1 and the hole housing 23 of the optical fiber jack 2 of the present invention are respectively assembled with the plug housing and the socket housing of the connector, and are respectively positioned with the key slots of the plug housing and the socket housing by the first anti-rotation pin 13 and the second anti-rotation pin 21, and the pin housing 15 and the hole housing 23 are respectively fixedly connected with the plug housing and the socket housing of the connector by the first nut 14 and the second nut 22.

Referring to fig. 1, 2, 3 and 6, when the plug housing is inserted into the socket housing, the guide posts 151 of the pin housing 15 and the guide holes 231 of the hole housing 23 of the present invention first touch, and align the coaxiality of the connection therebetween by guiding, the ferrule 12 of the fiber stub 1 is then mated with the outer ferrule 103 of the second expanded beam ferrule 20 in the fiber receptacle 2, during which, once the pin housing 15 and the bore housing 23 are subjected to external bending forces, this bending force will be first received and removed by the guide post 151 of the needle housing 15 and the guide hole 231 of the bore housing 23, and when the ferrule 12 of the fiber stub 1 is mated with the ferrule 103 of the second expanded beam ferrule 20 on the fiber receptacle 2, the bending force disappears and cannot be transmitted to the ceramic sleeve 12 of the optical fiber ferrule 1, so that the danger that the ceramic sleeve 12 is easy to crack in the butt joint process is avoided, and the accurate butt joint of the lenses 101 on the first expanded beam ferrule 10 and the second expanded beam ferrule 20 is ensured.

Referring to fig. 1, 2, 3, 7, 8, the present invention provides a first anti-rotation pin 13 disposed within the first pin aperture 152 of the needle housing 15 and between the first keyway 161 of the needle tail shank 16; a second anti-rotation pin 21 is provided in the second pin hole 232 of the hole housing 23 and between the second key groove 241 of the hole tail shank 24; since the outer insert 103 of the first expanded beam ferrule 10 is press-fitted with the pin tail handle 16 and the outer insert 103 of the second expanded beam ferrule 20 is press-fitted with the hole tail handle 24, the first anti-rotation pins 13 limit the rotation of the first expanded beam ferrule 10 with respect to the pin housing 15 and the second anti-rotation pins 21 limit the rotation of the second expanded beam ferrule 20 with respect to the hole housing 23.

Referring to fig. 1, fig. 2, fig. 3, fig. 7 and fig. 8, when the optical fiber connector is used, the pin housing 15 of the optical fiber pin 1 and the hole housing 23 of the optical fiber jack 2 are respectively positioned with the key slots of the plug housing and the socket housing by the first anti-rotation pin 13 and the second anti-rotation pin 21, the relative rotation positions of the optical fiber pin 1 and the plug housing and the relative rotation positions of the optical fiber jack 2 and the socket housing are limited, and under the condition that the plug housing and the socket housing are repeatedly inserted and pulled, the radial angle consistency of the optical paths of the first expanded beam ferrule 10 and the second expanded beam ferrule 20 during butt joint can be ensured, and the repeat consistency of optical performance transmission is ensured.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.