CN101661136A - Single-core fiber optic rotary joint structure and direct single-core fiber optic rotary joint - Google Patents
Single-core fiber optic rotary joint structure and direct single-core fiber optic rotary joint Download PDFInfo
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- CN101661136A CN101661136A CN200810141129A CN200810141129A CN101661136A CN 101661136 A CN101661136 A CN 101661136A CN 200810141129 A CN200810141129 A CN 200810141129A CN 200810141129 A CN200810141129 A CN 200810141129A CN 101661136 A CN101661136 A CN 101661136A
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Abstract
The invention discloses a single-core fiber optic rotary joint structure and a direct single-core fiber optic rotary joint. The joint comprises revolving body parts rotatably assembled together and used for accessing and fixing two optical fibers; the insides of the two revolving body parts are provided with optical fiber-passing through holes which coaxially correspond and are communicated; the inside of one of the revolving body parts is inserted with a capillary tube on an optical fiber butting position along the axial direction; the inside of the capillary tube is provided with an inner hole which allows a fiber core of an optical fiber to insert from two ends of the capillary tube; and the inner hole of the capillary tube coaxially corresponds to and is communicated with the optical fiber-passing through holes in the two revolving body parties. The insides of the two revolving body parts are provided with the capillary tubes for the optical fibers to butt, the inner wall of the capillary tube can be filled with matching oil of which the refractive index is approximate to that of the fiber cores of the optical fibers, and the matching oil can be sandwiched between two fiber core end faces to eliminate coupling loss generated by air clearances; and due to the existence of the matching oil, the light transmitting effect when the fiber core end faces of the two optical fibersare not contacted can approximately achieve the light transmitting effect when the fiber core end faces of the two optical fibers are contacted.
Description
Technical field
The present invention relates to joints of optical fibre technical field.
Background technology
The direct type of two optical fiber passes photo structure must be at the end face of two optical fiber under the tight condition that contacts, just can obtain lower coupling loss, yet for fiber rotation connector, if will rotate the end face of end optical fiber and stationary end optical fiber closely contacts, the relative rotation of its contact end face is easy to cause the fiber end face wearing and tearing and causes bigger coupling loss, and in the existing fiber rotation connector without any the auxiliary coupling or the device of recovering damage, closely the optical fiber of contact can not produce diameter run-out when rotated and reduce the light signal that enters reception optical fiber, influences the communication quality of optical fiber.
Summary of the invention
The object of the present invention is to provide a kind of direct type single-core fiber rotary connector.
The technical scheme of direct type single-core fiber rotary connector of the present invention is: a kind of direct type single-core fiber rotary connector, comprise that rotating two optical fiber that are assembled together inserts the fixing rotary body parts of using, the optical fiber that is provided with coaxial correspondence in the two rotary body parts and communicates passes through hole, be inserted with kapillary vertically in the fiber alignment place in one of them rotary body parts, it is coaxial corresponding and communicate that the endoporus that the fibre core that is provided with the facial expression fibre in the kapillary inserts from its two ends, kapillary endoporus and optical fiber in the two rotary body parts pass through hole.
Described two rotary body parts are respectively shell body and ring flange, and ring flange rotates the end be assemblied in shell body by the bearing that is fixed in the shell body end, and the inside and outside circle of described bearing ring flange and shell body respectively is connected.
Be threaded on the described ring flange and be arranged in axle sleeve in the bearing inner race, the inner ring of described bearing is installed between the step set on axle sleeve outer face and the flange plate outer ring, be provided with in the described axle sleeve with ring flange in optical fiber pass the coaxial optical fiber corresponding and that communicate of through hole and pass through hole.
The optical fiber of described axle sleeve passes through hole and locates the slotting plastic casing that is connected with the relative aperture that the optical fiber of ring flange passes through hole.
Screw fit has the pressure welding case that can press-fit fixed fiber crust and reinforcing armature on the outer ring of described two rotary body parts.
Be set with sheath in the pressure welding case outside on the described two rotary body parts.
Be filled with the refractive index coupling oil close in the described kapillary endoporus with fiber core.
The technical scheme of single-core fiber rotary connection structure of the present invention is: the single-core fiber rotary connection structure, this structure comprises that the fixing rotary body parts of using of two optical fiber accesses that rotation is assembled together reach two optical fiber that wherein relative direction insertion is fixed, the optical fiber that is provided with coaxial correspondence in the two rotary body parts and communicates passes through hole, be inserted with kapillary vertically in the fiber alignment place in one of them rotary body parts, be provided with the endoporus of the fibre core of facial expression fibre in the kapillary from its two ends insertion, it is coaxial corresponding and communicate that kapillary endoporus and optical fiber in the two rotary body parts pass through hole, the fibre core of described two optical fiber inserts the endoporus capillaceous and between its relative termination from relative direction and leaves the gap, is filled with the refractive index coupling oil close with fiber core in the described endoporus capillaceous and in the gap between the fibre core termination of two optical fiber.
Be provided with the kapillary that is used for the fiber core butt joint in the two rotary body parts of the present invention, can be packed into the refractive index coupling oil close in this endoporus capillaceous with fiber core, coupling oil can be folded between the two fibre core end faces to eliminate the coupling loss that the clearance was produced, because the existence of coupling oil, make the biography light effect of fibre core end face when not contacting of two optical fiber can be similar to the biography light effect that reaches when contacting, when therefore adopting connector of the present invention to carry out the connection of optical fiber, can suitably draw back the spacing of two fiber alignment end faces, the end wear when having avoided rotation.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention one;
Fig. 2 is the ring flange in the rotary body parts of the embodiment of the invention one and the assembly structure synoptic diagram of bearing;
Fig. 3 is the ring flange in the rotary body parts of the embodiment of the invention two and the assembly structure synoptic diagram of bearing;
Fig. 4 is the ring flange in the rotary body parts of the embodiment of the invention three and the assembly structure synoptic diagram of bearing.
Fig. 5 is the ring flange in the rotary body parts of the embodiment of the invention four and the assembly structure synoptic diagram of bearing.
Embodiment
As Fig. 1, shown in Figure 2, embodiments of the invention one, two single-core fibers are realized rotatable direct connection from two rotary body parts of connector are inserted at two ends respectively, the rotary body parts comprise shell body 3 and rotate the ring flange 13 that is assemblied in shell body 3 one ends by two bearings 7, the outer ring of two bearings 7 is fixed in the stepped hole that is provided with in shell body 3 ends by the shaft collar 9 that is fixed on shell body 3 ends, shaft collar 9 is fixed on shell body 3 ends by screw 10, establish the axle sleeve 6 that optical fiber passes through hole in being fixed with in the inner ring of two bearings 7, one end of axle sleeve 6 and ring flange 13 are fixedlyed connected by screw thread, be provided with in the ring flange 13 and pass the coaxial corresponding optical fiber of through hole with the optical fiber of axle sleeve 6 and pass through hole, and in both optical fiber passes the relative aperture of through hole, be plugged with and be convenient to the plastic casing 12 that optical fiber penetrates.The outer end internal fixation of shell body 3 be useful on fixed fiber in establish the support set 2 that optical fiber passes through hole, one side of support set 2 is fixed with the axle sleeve 4 at the inner port place of the bearing 7 place stepped holes that extend in the shell body 3, be fitted with glass capillary 5 in the axle sleeve 4, the also coaxial setting that communicates of support set 2 in the endoporus that the fibre core that glass capillary 5 is provided with the facial expression fibre inserts from its two ends, the endoporus of glass capillary 5 and shell body 3 and the axle sleeve 6 in the ring flange 13.
In use, the crust of two single-core fibers and reinforcement are crimped respectively on the outer ring that cover 16,17 press-fits the shell body 3 that is fixed on rotary body parts two ends and ring flange 13, overlap upper jacket 19,20 on the shell body 3 at rotary body parts two ends and the ring flange 13 respectively, to improve the anti-bending strength of product.Fill matching fluid in glass capillary 5 endoporus, glass capillary 5 and axle sleeve 4 are packed in the shell body 3 together then; Shaft collar 9, two bearings 7 and back-up ring 8 are packed on axle sleeve 6 external diameters successively, ring flange 13 is threaded with axle sleeve 6, the step on axle sleeve 6 and the ring flange 13 compresses bearing 7 inner rings from two ends, prevent the bearing axial float; With 4 screws 10 shaft collar 9 is fixed on the shell body 3, shaft collar 9 steps withstand bearing 7 outer rings, guarantee that bearing 7 can axial float.O-ring seals 11 plays two interfacial seal effects between shell body 3 and shaft collar 9.The support set 2 usefulness glue of packing into are fixed in the shell body 3.After optical fiber 1 and optical fiber 14 end faces cut with the optical fiber cutter, penetrate the glass capillary 5 from two ends respectively, guarantee insertion loss minimum, at last optical fiber 1 and optical fiber 14 usefulness glue are separately fixed in the support set 2 and ring flange 13 in the shell body 3 by optical fiber 1 and optical fiber 14.
Kapillary described in the foregoing description is a glass tube, can also be the kapillary of metal tube or other hard certainly.
As shown in Figure 3, embodiments of the invention two, and the difference of embodiment one is: there is not plastic tube between ring flange 13 and the axle sleeve 6.
As shown in Figure 4, embodiments of the invention three, be with the difference of embodiment one: bearing 7 inner rings directly are assemblied on ring flange 13 outer rings.
As shown in Figure 5, embodiments of the invention four, be with the difference of embodiment one: bearing 7 inner rings directly are assemblied on ring flange 13 outer rings, and axle sleeve is not set on the ring flange 13.
Claims (10)
1, a kind of direct type single-core fiber rotary connector, comprise that rotating two optical fiber that are assembled together inserts the fixing rotary body parts of using, the optical fiber that is provided with coaxial correspondence in the two rotary body parts and communicates passes through hole, it is characterized in that: be inserted with kapillary vertically in the fiber alignment place in one of them rotary body parts, it is coaxial corresponding and communicate that the endoporus that the fibre core that is provided with the facial expression fibre in the kapillary inserts from its two ends, kapillary endoporus and optical fiber in the two rotary body parts pass through hole.
2, direct type single-core fiber rotary connector according to claim 1, it is characterized in that: described two rotary body parts are respectively shell body and ring flange, ring flange rotates the end be assemblied in shell body by the bearing that is fixed in the shell body end, and the inside and outside circle of described bearing ring flange and shell body respectively is connected.
3, direct type single-core fiber rotary connector according to claim 2, it is characterized in that: being threaded on the described ring flange is arranged in axle sleeve in the bearing inner race, the inner ring of described bearing is installed between the step set on axle sleeve outer face and the flange plate outer ring, be provided with in the described axle sleeve with ring flange in optical fiber pass the coaxial optical fiber corresponding and that communicate of through hole and pass through hole.
4, direct type single-core fiber rotary connector according to claim 3 is characterized in that: the optical fiber of described axle sleeve passes through hole and locates the slotting plastic casing that is connected with the relative aperture that the optical fiber of ring flange passes through hole.
5, according to any described direct type single-core fiber rotary connector in the claim 1～4, it is characterized in that: screw fit has the pressure welding case that can press-fit fixed fiber crust and reinforcing armature on the outer ring of two rotary body parts.
6, direct type single-core fiber rotary connector according to claim 5 is characterized in that: be set with sheath in the pressure welding case outside on the described two rotary body parts.
7, according to any described direct type single-core fiber rotary connector in the claim 1～4, it is characterized in that: be filled with the refractive index coupling oil close in the described kapillary endoporus with fiber core.
8, direct type single-core fiber rotary connector according to claim 5 is characterized in that: be filled with the refractive index coupling oil close with fiber core in the described kapillary endoporus.
9, direct type single-core fiber rotary connector according to claim 6 is characterized in that: be filled with the refractive index coupling oil close with fiber core in the described kapillary endoporus.
10, a kind of single-core fiber rotary connection structure, this structure comprises that the fixing rotary body parts of using of two optical fiber accesses that rotation is assembled together reach two optical fiber that wherein relative direction insertion is fixed, the optical fiber that is provided with coaxial correspondence in the two rotary body parts and communicates passes through hole, it is characterized in that: be inserted with kapillary vertically in the fiber alignment place in one of them rotary body parts, be provided with the endoporus of the fibre core of facial expression fibre in the kapillary from its two ends insertion, it is coaxial corresponding and communicate that kapillary endoporus and optical fiber in the two rotary body parts pass through hole, the fibre core of described two optical fiber inserts the endoporus capillaceous and between its relative termination from relative direction and leaves the gap, is filled with the refractive index coupling oil close with fiber core in the described endoporus capillaceous and in the gap between the fibre core termination of two optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101411299A CN101661136B (en) | 2008-08-26 | 2008-08-26 | Single-core fiber optic rotary joint structure and direct single-core fiber optic rotary connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101411299A CN101661136B (en) | 2008-08-26 | 2008-08-26 | Single-core fiber optic rotary joint structure and direct single-core fiber optic rotary connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101661136A true CN101661136A (en) | 2010-03-03 |
| CN101661136B CN101661136B (en) | 2012-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008101411299A Expired - Fee Related CN101661136B (en) | 2008-08-26 | 2008-08-26 | Single-core fiber optic rotary joint structure and direct single-core fiber optic rotary connector |
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| CN (1) | CN101661136B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833142A (en) * | 2010-03-17 | 2010-09-15 | 无锡光太光通讯器件有限公司 | Insert device with exhausting function |
| CN102749681A (en) * | 2012-07-18 | 2012-10-24 | 九江精达检测技术有限公司 | Device and method capable of realizing precise regulation of rotary single-path optical fiber connector |
| CN103837940A (en) * | 2014-02-27 | 2014-06-04 | 中国电子科技集团公司第八研究所 | Multichannel optical fiber rotary connector structure and manufacturing method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5222169A (en) * | 1992-02-18 | 1993-06-22 | Foxconn International, Inc. | Optical fiber connector assembly |
| EP0766348B1 (en) * | 1995-09-29 | 2000-01-19 | Endress + Hauser GmbH + Co. | Connector |
| JP2003207687A (en) * | 2002-01-16 | 2003-07-25 | Seiko Instruments Inc | Ferrule and its manufacturing method and optical connector plug |
| CN1920604A (en) * | 2006-08-22 | 2007-02-28 | 江苏宇通光器件科技有限公司 | Single-core inserted optical fiber cold connection extender |
| CN101034191A (en) * | 2006-12-18 | 2007-09-12 | 江苏宇通光器件科技有限公司 | Optical fiber connector plug connection follower |
-
2008
- 2008-08-26 CN CN2008101411299A patent/CN101661136B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101833142A (en) * | 2010-03-17 | 2010-09-15 | 无锡光太光通讯器件有限公司 | Insert device with exhausting function |
| CN101833142B (en) * | 2010-03-17 | 2011-08-17 | 无锡光太光通讯器件有限公司 | Insert device with exhausting function |
| CN102749681A (en) * | 2012-07-18 | 2012-10-24 | 九江精达检测技术有限公司 | Device and method capable of realizing precise regulation of rotary single-path optical fiber connector |
| CN103837940A (en) * | 2014-02-27 | 2014-06-04 | 中国电子科技集团公司第八研究所 | Multichannel optical fiber rotary connector structure and manufacturing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101661136B (en) | 2012-07-18 |
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Granted publication date: 20120718 Termination date: 20180826 |