CN201532999U - Straight type radio frequency coaxial rotary joint - Google Patents
Straight type radio frequency coaxial rotary joint Download PDFInfo
- Publication number
- CN201532999U CN201532999U CN2009202107243U CN200920210724U CN201532999U CN 201532999 U CN201532999 U CN 201532999U CN 2009202107243 U CN2009202107243 U CN 2009202107243U CN 200920210724 U CN200920210724 U CN 200920210724U CN 201532999 U CN201532999 U CN 201532999U
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- sleeve
- swivel joint
- cover
- rotary joint
- seat
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- Expired - Fee Related
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- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
A straight type radio frequency coaxial rotary joint comprises: a rotation unit and a fixation unit which are coaxially arranged; wherein the rotation unit is composed of a core rod, an insulation bush, a connection sleeve, a rotation joint, a bearing and a retainer ring and the fixation unit is composed of an inner core, a sleeve and an insulation bush. The rotary joint has features of reliable structure, flexible rotation, good electric contact performance, wide frequency band, good performance, stable work performance and is used for frequencies such as MF, HF, VHF, UHF and widely applied on the communication antenna and transmitter with relatively rotating systems.
Description
Technical field
The utility model relates to a kind of radio-frequency (RF) coaxial rotary joint, particularly a kind of novel low Insertion Loss, low reflection, rotates through type radio-frequency (RF) coaxial rotary joint flexibly.
Background technology
Along with development of Communication Technique,,, between antenna and the transmitter relative rotation is arranged, and transmitter is to carrying out feed with radio frequency coaxial-cable between the antenna in some occasion in order to improve the flexibility of antenna and transmitter configuration.For avoiding feeder cable to twist off, a coaxial radio-frequency rotary joint must be arranged between transmitter and antenna.This rotary joint must both keep radiofrequency signal to be fed to antenna smoothly, can keep feeder cable operate as normal under the relative rotating conditions continuously with antenna of transmitter again.Under the limited service condition of some installing space, this rotary joint is answered miniaturization.
Under antenna and the counterrotating condition of transmitter, this rotary joint should satisfy following requirement:
1. rotate on the structure flexibly, electric going up contacts reliably;
2. the transmission that can keep electromagnetic energy between transmitter and the antenna in rotary course so when requiring rotate in the joint, standing wave is little, and changes and limits within the specific limits; Generally require VSWR≤1.25;
3. it is little to insert loss, generally requires less than 0.3dB;
4. satisfy the power capacity requirement that signal post needs;
5. volume is little, can be integrated in the transmitter.
And existing rotary joint is widely used in radar, and its scheme and version can not satisfy or can not satisfy above requirement simultaneously.
Summary of the invention
The purpose of this utility model is to design a kind of through type radio-frequency (RF) coaxial rotary joint, can satisfy above condition simultaneously, its bandwidth, performance is good and stable work in work, be fit to MF, HF, frequency ranges such as VHF, UHF, can be widely used in communication antenna and transmitter and have in the counterrotating system.
For achieving the above object, the technical solution of the utility model is,
Through type radio-frequency (RF) coaxial rotary joint, it comprises the rotating part and the standing part of coaxial setting; Described rotating part comprises, swivel joint, and it offers central passage, and lateral surface is established boss; Plug, cylindrical, be arranged in the swivel joint central passage, head stretches out swivel joint, and the sheathed insulating bushing of tail end is also fixed with the swivel joint central passage; Bearing is sheathed on the swivel joint outside, and bearing one side is against swivel joint lateral surface boss, and opposite side is spacing by back-up ring; Adapter sleeve is sheathed on the swivel joint lateral surface, and a side is against bearing; Described standing part comprises, sleeve has the cavity of one one end opening, and sleeve other end sidewall has central through hole, and central through hole connects a fixed cover; Described sleeve one sidewall inwall is also established an annular holddown groove along central through hole; Described swivel joint is inserted in this sleeve cavity, and the adapter sleeve that is sheathed on the swivel joint lateral surface is connected with sleeve; Inner core, cylindrical, an end is fixed in the fixed cover of sleeve by insulating bushing, and its end that is positioned at the sleeve cavity is set a position groove, and described plug head is inserted in this detent; Described plug and inner core adopt circle symmetrical structure form; Cover for seat, T-shaped, offer centre bore, cover for seat one end is arranged at described sleeve one sidewall annular holddown groove, and opposite side central authorities offer cannelure; Described swivel joint head is resisted against in this cannelure by a trim ring; The groove of placing steel ball is established in the outer that trim ring is relative with the cover for seat cannelure, and this steel ball is contact base collar-shaped groove and trim ring respectively; Spring is sheathed on cover for seat, and the one end is against described sleeve one sidewall inwall, and the other end is against the cover for seat bossing.
Further, described sleeve and fixed cover are structure as a whole.
Again, plug described in the utility model and inner core are formed the inner wire of rotary joint, and material adopts silicon bronze bar.
Described swivel joint, trim ring, cover for seat, adapter sleeve are formed the outer conductor of rotary joint, and material adopts the tin bronze rod.
Principle of the present utility model is to utilize the guided wave principle of coaxial line, and promptly two coaxial cylindrical conductors constitute navigation system, and the inner wire outer radius is a, and the outer conductor inside radius is b, fills air between two conductors.Suitably select the numerical value of a, b, make it to transmit the TEM mould.
The utility model is in order to keep the rotational symmetry of the radio frequency transmission characteristic in the rotary course, and promptly electrical property does not change with corner, adopts circle symmetrical structure form.
Described plug is to adopt plug-type elasticity to connect with being connected of inner core, between insertion while inner core and plug certain resilient clamp power is arranged, and is reliable to guarantee electrically contacting of inner core and plug.
The utility model spinfunction realizes by a bearing and steel ball, guarantees the coaxial running accuracy and the flexibility of revolution of inner wire.Simultaneously, place a spring with the whole outside pushing tow of rotary components in the holder bottom, make between plug and inner core when guaranteeing to contact and stay a gap, meanwhile contact-making surface between rotary components and the Connection Block and frictional force all are in minimum state, thereby inner core can be rotated flexibly.
The radio frequency connector at the utility model two ends adopts the SMA seat, designs, makes according to the national military standard relevant criterion.
The beneficial effects of the utility model are:
The utility model has solved transmitter and antenna has under the situation of relative rotational difference, by the radio-frequency (RF) energy of the transmitter output feed problems to antenna.
Main performance of the present utility model can reach:
1. standing wave: at 0.3MHz～1GHz bandwidth range standing internal wave less than 1.25;
2. Insertion Loss: Insertion Loss is less than 0.3dB in 0.3MHz～1GHz bandwidth range;
3. power capacity: 〉=100W@100MHz;
4. stable: this coaxial rotary joint rotates arbitrarily angled, and its standing wave changes less than 0.1, and Insertion Loss changes less than 0.1dB;
5. consistency: the coaxial rotary joint that is processed need not to debug after finishing assembling, just can satisfy top described performance.
Description of drawings
Fig. 1 is the profile of coaxial rotary joint one embodiment of the utility model;
Fig. 2 is the end view of the coaxial rotary joint of the utility model;
Fig. 3 is the profile of the coaxial rotary joint swivel joint of the utility model;
Fig. 4 is the profile of coaxial rotary joint sleeve of the utility model and inner core.
Embodiment
Referring to Fig. 1～Fig. 4, the utility model through type radio-frequency (RF) coaxial rotary joint, it comprises the rotating part and the standing part of coaxial setting;
Described rotating part comprises, swivel joint 1, and it offers central passage 101, and lateral surface is established boss 102; Plug 2, cylindrical, be arranged in swivel joint central passage 101, head stretches out swivel joint 1, and the sheathed insulating bushing 3 of tail end is also fixing with swivel joint central passage 101; Bearing 4 is sheathed on swivel joint 1 outside, and bearing 4 one sides are against swivel joint 1 lateral surface boss 102, and opposite side is spacing by back-up ring 5; Adapter sleeve 6 is sheathed on swivel joint 1 lateral surface, and a side is against bearing 4;
Described standing part comprises, sleeve 7 has the cavity 70 of one one end opening, and sleeve 7 other end sidewalls 71 have central through hole 711, and central through hole connects a fixed cover 72; Described sleeve one sidewall 71 inwalls are also established an annular holddown groove 712 along central through hole 711; Described swivel joint 1 is inserted in this sleeve cavity 70, and the adapter sleeve 6 that is sheathed on swivel joint 1 lateral surface is connected with sleeve 7; Inner core 8, cylindrical, an end is fixed in the fixed cover 72 of sleeve 7 by insulating bushing 3 ', and its end that is positioned at sleeve cavity 70 is set a position groove 801, and described plug 2 heads are inserted in this detent 801; Described plug 2 and inner core 8 adopt circle symmetrical structure form;
Cover for seat 9, T-shaped, offer centre bore 901, cover for seat 9 one ends are arranged at described sleeve 7 one sidewalls 71 annular holddown grooves 712, and opposite side central authorities offer cannelure 901; Described swivel joint 1 head is resisted against in this cannelure 901 by a trim ring 10; The groove 1001 of placing steel ball 11 is established in trim ring 10 and cover for seat cannelure 901 relative outers, and this steel ball 11 is contact base collar-shaped groove 901 and trim rings 10 respectively; Spring 12 is sheathed on cover for seat 9, and the one end is against described sleeve 7 one sidewall inwalls, and the other end is against cover for seat 9 bossings.
Further, described sleeve 7 is structure as a whole with fixed cover 72.
Described swivel joint 1, trim ring 10, cover for seat 9, adapter sleeve 6 are formed the outer conductor of rotary joint, and material adopts the tin bronze rod.
The profile of outer conductor of the present utility model is according to the installation shaped design of supporting transmitter, can be designed to different profiles according to the installation requirement of transmitter.
The utility model bandwidth is fit to frequency ranges such as MF, HF, VHF, UHF and uses, and power output is big, stable performance and high conformity.
The utility model reliable in structure, rotation are flexibly, electrical contact performance is good, are the connected mode of SMA according to the needs two ends of certain system; And in fact can carry out the design of multiple connected mode by N type, L type and user's request.
Claims (4)
1. through type radio-frequency (RF) coaxial rotary joint is characterized in that, comprises the rotating part and the standing part of coaxial setting;
Described rotating part comprises,
Swivel joint, it offers central passage, and lateral surface is established boss;
Plug, cylindrical, be arranged in the swivel joint central passage, head stretches out swivel joint, and the sheathed insulating bushing of tail end is also fixed with the swivel joint central passage;
Bearing is sheathed on the swivel joint outside, and bearing one side is against swivel joint lateral surface boss, and opposite side is spacing by back-up ring;
Adapter sleeve is sheathed on the swivel joint lateral surface, and a side is against bearing;
Described standing part comprises,
Sleeve has the cavity of one one end opening, and sleeve other end sidewall has central through hole, and central through hole connects a fixed cover; Described sleeve one sidewall inwall is also established an annular holddown groove along central through hole; Described swivel joint is inserted in this sleeve cavity, and the adapter sleeve that is sheathed on the swivel joint lateral surface is connected with sleeve;
Inner core, cylindrical, an end is fixed in the fixed cover of sleeve by insulating bushing, and its end that is positioned at the sleeve cavity is set a position groove, and described plug head is inserted in this detent; Described plug and inner core adopt circle symmetrical structure form;
Cover for seat, T-shaped, offer centre bore, cover for seat one end is arranged at described sleeve one sidewall annular holddown groove, and opposite side central authorities offer cannelure; Described swivel joint head is resisted against in this cannelure by a trim ring; The groove of placing steel ball is established in the outer that trim ring is relative with the cover for seat cannelure, and this steel ball is contact base collar-shaped groove and trim ring respectively;
Spring is sheathed on cover for seat, and the one end is against described sleeve one sidewall inwall, and the other end is against the cover for seat bossing.
2. through type radio-frequency (RF) coaxial rotary joint as claimed in claim 1 is characterized in that described sleeve and fixed cover are structure as a whole.
3. through type radio-frequency (RF) coaxial rotary joint as claimed in claim 1 is characterized in that, described plug and inner core are formed the inner wire of rotary joint, and material adopts silicon bronze bar.
4. through type radio-frequency (RF) coaxial rotary joint as claimed in claim 1 is characterized in that, swivel joint, trim ring, cover for seat, adapter sleeve are formed the outer conductor of rotary joint, and material adopts the tin bronze rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202107243U CN201532999U (en) | 2009-10-14 | 2009-10-14 | Straight type radio frequency coaxial rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202107243U CN201532999U (en) | 2009-10-14 | 2009-10-14 | Straight type radio frequency coaxial rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201532999U true CN201532999U (en) | 2010-07-21 |
Family
ID=42528400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202107243U Expired - Fee Related CN201532999U (en) | 2009-10-14 | 2009-10-14 | Straight type radio frequency coaxial rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201532999U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185179A (en) * | 2011-03-11 | 2011-09-14 | 江苏北方电子有限公司 | Compact rotary joint structure |
| CN102394458A (en) * | 2011-07-03 | 2012-03-28 | 杭州全盛机电科技有限公司 | Digital high definition slip ring capable of realizing definition of 1080P (Progressive Scan) |
| CN102468525A (en) * | 2011-08-25 | 2012-05-23 | 中国船舶重工集团公司第七二四研究所 | Realizing method of high-isolation degree design of microwave multi-path rotary hinge channels |
| CN102522610A (en) * | 2011-12-22 | 2012-06-27 | 南京鑫轩电子系统工程有限公司 | Multichannel microwave rotary joint |
| CN105186071A (en) * | 2015-09-30 | 2015-12-23 | 西安艾力特电子实业有限公司 | Novel one-way microwave rotary joint |
| CN106329121A (en) * | 2016-08-19 | 2017-01-11 | 中国船舶重工集团公司第七二四研究所 | Three-channel broadband non-contact rotary hinge and implementation method thereof |
| CN108317318A (en) * | 2018-01-19 | 2018-07-24 | 兰州理工大学 | A kind of through type chicksan |
| CN110277298A (en) * | 2019-07-26 | 2019-09-24 | 江苏鲁汶仪器有限公司 | A kind of radio frequency rotary joint and the ion etching system for being provided with radio frequency rotary joint |
| CN110661063A (en) * | 2019-09-23 | 2020-01-07 | 嘉兴恩碧技电气有限公司 | Substrate integrated waveguide feed broadband coaxial rotary joint |
| CN114583419A (en) * | 2022-01-12 | 2022-06-03 | 中国电子科技集团公司第十研究所 | Capacitance type coaxial radio frequency rotary joint |
-
2009
- 2009-10-14 CN CN2009202107243U patent/CN201532999U/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102185179A (en) * | 2011-03-11 | 2011-09-14 | 江苏北方电子有限公司 | Compact rotary joint structure |
| CN102185179B (en) * | 2011-03-11 | 2013-09-25 | 北方通用电子集团有限公司 | Compact rotary joint structure |
| CN102394458A (en) * | 2011-07-03 | 2012-03-28 | 杭州全盛机电科技有限公司 | Digital high definition slip ring capable of realizing definition of 1080P (Progressive Scan) |
| CN102468525A (en) * | 2011-08-25 | 2012-05-23 | 中国船舶重工集团公司第七二四研究所 | Realizing method of high-isolation degree design of microwave multi-path rotary hinge channels |
| CN102522610A (en) * | 2011-12-22 | 2012-06-27 | 南京鑫轩电子系统工程有限公司 | Multichannel microwave rotary joint |
| CN102522610B (en) * | 2011-12-22 | 2014-05-28 | 南京鑫轩电子系统工程有限公司 | Multichannel microwave rotary joint |
| CN105186071A (en) * | 2015-09-30 | 2015-12-23 | 西安艾力特电子实业有限公司 | Novel one-way microwave rotary joint |
| CN106329121A (en) * | 2016-08-19 | 2017-01-11 | 中国船舶重工集团公司第七二四研究所 | Three-channel broadband non-contact rotary hinge and implementation method thereof |
| CN108317318A (en) * | 2018-01-19 | 2018-07-24 | 兰州理工大学 | A kind of through type chicksan |
| CN108317318B (en) * | 2018-01-19 | 2019-10-22 | 兰州理工大学 | A kind of through type chicksan |
| CN110277298A (en) * | 2019-07-26 | 2019-09-24 | 江苏鲁汶仪器有限公司 | A kind of radio frequency rotary joint and the ion etching system for being provided with radio frequency rotary joint |
| CN110661063A (en) * | 2019-09-23 | 2020-01-07 | 嘉兴恩碧技电气有限公司 | Substrate integrated waveguide feed broadband coaxial rotary joint |
| CN110661063B (en) * | 2019-09-23 | 2021-10-01 | 嘉兴恩碧技电气有限公司 | Substrate integrated waveguide feed broadband coaxial rotary joint |
| CN114583419A (en) * | 2022-01-12 | 2022-06-03 | 中国电子科技集团公司第十研究所 | Capacitance type coaxial radio frequency rotary joint |
| CN114583419B (en) * | 2022-01-12 | 2023-10-20 | 中国电子科技集团公司第十研究所 | Capacitive coaxial radio frequency rotary joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100721 Termination date: 20151014 |
|
| EXPY | Termination of patent right or utility model |