CN105406305A - Low-passive-intermodulation coaxial connector - Google Patents
Low-passive-intermodulation coaxial connector Download PDFInfo
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- CN105406305A CN105406305A CN201410432338.4A CN201410432338A CN105406305A CN 105406305 A CN105406305 A CN 105406305A CN 201410432338 A CN201410432338 A CN 201410432338A CN 105406305 A CN105406305 A CN 105406305A
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Abstract
The invention discloses a low-passive-intermodulation coaxial connector. The invention provides the connector, and the connector comprises a cable, wherein the external conductor of the cable is provided with a thread. The connector is characterized in that the connector also comprises a first tin ring which is disposed on the external conductor in a winding manner according to the thread; a connector housing which is used for storing the cable which is provided with the first tin ring in a winding manner, wherein the connector housing comprises a first cavity and a second cavity, which are adjacent to each other; a second tin ring which is corresponding to the first tin ring and is sequentially disposed on the external conductor; and the first and second tin rings are used for forming close and continuous welding connection with the external conductor of the cable in the first cavity or/and a part of the second cavity after the two tin rings are melt. According to the invention, the welding method and the corresponding connector can reduce the passive intermodulation in a radio frequency system. Moreover, the cost is lower, the manufacture time is short, and the electrical performance is good.
Description
Technical field
The present invention generally relates to wireless communication field, more specifically, relates to for Signal transmissions and low passive intermodulation (PIM) coaxial connector.
Background technology
Along with the development of mobile communication system, the application of high-power transmitter is more general, receiver sensitivity improves constantly, therefore, the system interference that passive intermodulation produces is day by day serious, owing to have employed the system of the defective device of passive intermodulation index, or cause system intermodulation performance bad because switching performance between parts is not good in communication engineering, thus the situation causing passive intermodulation EVAC (Evacuation Network Computer Model) normally to work happens occasionally, therefore, passive inter-modulation performance index more and more pay attention to by operator.
Passive intermodulation Producing reason is except the non-linear factor of passive device material itself, also has a lot of extraneous factor, unreliable, rosin joint and surface oxidation, improper, the incorrect mounting torque of arrangement of parts, conductor or connecting portion corrosion (dirt, dust, humidity, temperature) etc. as: Mechanical Contact all can the intermodulation performances of influential system.
Had correlation technique to reduce passive intermodulation at present, such as the scolding tin contact for coaxial connector (such as, coaxial cable) is designed, thus realize contacting comparatively closely, and then reduce passive intermodulation effect.General employing is directly wound around the mode that then tin sheet welds between the outer conductor and connector of coaxial cable, that is, the tin sheet of monoblock is wrapped on cable outer conductor, and uses specific instrument make tin sheet become round and be easy to put connector body into.
But above-mentioned technology deposits some problems: be first that cost is high, tin sheet is thick, therefore its cost ratio tin ring more expensive and need use special shaping jig manufacture; Next is that weld time is long, and tin sheet is difficult to fusing, and therefore its assembling and welding process will use a large amount of time; Then have impact to the performance of cable, in order to tin sheet can fully be melted, this will use a large amount of time in welding process, and therefore cable insulation will shrink very serious, thus reduces VSWR index.Even if adopt tin ring to weld, still can have problems in prior art, namely because the stanniferous amount of tin ring is limited and connector cavity unreasonable structure, tin stream has some setbacks, and easily causes and lacks weldering.
Therefore, need that a kind of cost is low, weld time is short badly and on the electric property less jockey of impact of cable and corresponding manufacture method.
Summary of the invention
For above problem, the invention provides a kind of coaxial connector that can reduce passive intermodulation effect, especially a kind of adopt tin ring to carry out welding jockey and corresponding welding method.
One aspect of the present invention proposes a kind of jockey, comprises on outer conductor and arranges threaded cable, it is characterized in that, also comprise: the first tin ring, is wrapped on described outer conductor matchingly with described screw thread; Connector shell, for holding the described cable being wound with described first tin ring, wherein, described connector shell also comprises the first cavity and the second cavity that are disposed adjacent; Second tin ring, is successively set on described outer conductor corresponding to described first tin ring; Wherein, first, second tin ring described is used for when two tin rings all melt after, forms tight between described outer conductor and continuous print and be welded to connect in described first cavity.
Preferably, the cross section of described first tin ring is essentially triangle, thus makes when described first tin ring is wrapped on described outer conductor, described first tin ring and described screw thread suitable.
Preferably, the diameter of described first cavity is less than the diameter of described second cavity, and the axial dimension of described first cavity is less than the axial dimension of described second cavity.
Preferably, the diameter of described second cavity 0.5 to 1.5mm larger than the diameter of described first cavity; And/or the diameter of described first cavity 0.3 to 1mm larger than the diameter of described outer conductor, thus make when described first tin ring and/or the fusing of the second tin ring, the tin of fusing can flow to the contact position of described cable and connector.
Preferably, the axial dimension of described first cavity is 2 to 4mm, and the axial dimension of described second cavity is 4 to 5mm; Or the axial dimension of described first cavity is two or three pitch of described screw thread, the axial dimension of described second cavity is two to four pitch of described screw thread.
Preferably, described connector shell also comprises at least one extra cavity, at least one extra cavity described is arranged at the side relative with described first cavity of described second cavity, and the diameter of at least one extra cavity described is more than or equal to the diameter of described second cavity.
Preferably, the edge of first, second cavity described is equipped with chamfering, and described chamfering is used for when described first, second tin ring fusing, and the tin contributing to melting flows to described first cavity to form weld zone, and wherein, the angle of described chamfering is 20 to 40 degree.
The invention allows for a kind of welding method of carrying out jockey, described jockey comprises on outer conductor and arranges threaded cable, it is characterized in that, comprising: provide the first tin ring, and by its according to described spiral wound on described outer conductor; Second tin ring is provided, and is corresponded to described first tin ring and be successively set on described outer conductor; There is provided the connector shell with the first cavity and the second cavity to hold the described cable being wound with described first tin ring; Fusing first, second tin ring described, to be formed between described outer conductor closely in described first cavity and continuous print is welded to connect.
Preferably, cross section is provided to be essentially leg-of-mutton described first tin ring to be wrapped in matchingly on described outer conductor with described screw thread.
Preferably, melt first, second tin ring described by the mode of electromagnetic induction, and first melt described first tin ring and be in part in described first cavity and the second tin ring.
Preferably, the diameter of described first cavity is less than the diameter of described second cavity, and the axial dimension of described first cavity is less than the axial dimension of described second cavity.
Preferably, the diameter of described second cavity 0.5 to 1.5mm larger than the diameter of described first cavity; And/or the diameter of described first cavity 0.3 to 1mm larger than the diameter of described cable outer conductor, thus make when melting described first tin ring and/or the second tin ring, the tin of fusing can flow to the contact position of described cable and connector.
Preferably, the axial dimension of described first cavity is 2 to 4mm, and the axial dimension of described second cavity is 4 to 5mm; Or the axial dimension of described first cavity is two or three pitch of described screw thread, the axial dimension of described second cavity is two to four pitch of described screw thread.
Preferably, described connector shell also comprises at least one extra cavity, at least one extra cavity described is arranged at the side relative with described first cavity of described second cavity, and the diameter of at least one extra cavity described is more than or equal to the diameter of described second cavity.
Preferably, the edge of first, second cavity described is equipped with chamfering, and described chamfering is used for when described first, second tin ring fusing, and the tin contributing to melting flows to described first cavity to form weld zone, and wherein, the angle of described chamfering is 20 to 40 degree.
By welding method of the present invention and corresponding jockey, the passive intermodulation in cable assembly/wire jumper in radio system can be reduced, and there is lower cost, fast manufacturing time and good electric property.
Accompanying drawing explanation
After description by reference to the specific embodiment of the present invention given by following accompanying drawing, the present invention will be understood better, and other objects of the present invention, details, feature and advantage will become more apparent.In the accompanying drawings:
Fig. 1 a is the cutaway perspective view according to connector shell of the invention process;
Fig. 1 b is the cable schematic diagram to be welded being wound with tin ring according to the embodiment of the present invention;
Fig. 1 c is the jockey profile according to the embodiment of the present invention;
Fig. 1 d is schematic diagram when being in welding position according to the jockey of the embodiment of the present invention;
Fig. 2 a forms the schematic diagram lacking weldering after welding in prior art;
Fig. 2 b is the welding schematic diagram that the formation of the foundation embodiment of the present invention connects comprehensively.
Embodiment
Below with reference to accompanying drawings preferred implementation of the present disclosure is described in more detail.Although show preferred implementation of the present disclosure in accompanying drawing, but should be appreciated that, the disclosure can be realized in a variety of manners and not should limit by the execution mode of setting forth here.On the contrary, provide these execution modes to be to make the disclosure more thorough and complete, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.
In conjunction with diagram, embodiments of the invention are set forth.
Fig. 1 a is the cutaway perspective view according to connector shell of the invention process.
In this embodiment, connector contains the first cavity 11 and the second cavity 12, two cavitys are contiguous to arrange and mutually thoroughly logical, for holding cable.The diameter d 1 of the first cavity 11 is less than the diameter d 2 of the second cavity 12, and the axial dimension L1 of the first cavity 11 is less than the axial dimension L2 of the second cavity.Therefore, the second cavity 12 can provide enough space to hold tin, so that when tin fusing, the tin in the second cavity 12 can flow to the first cavity 11, thus compensates the tin in the first cavity 11.
In order to make the tin melted can flow to the first cavity 11 rapidly, be respectively arranged with chamfering C1, C2 at the outer ledge of two cavitys, this chamfering contributes to carrying out drainage to the tin of fusing, thus acceleration tin flows to the first cavity 11 to form weld zone.In order to can drainage better, preferably, namely the angle of this chamfering be 20 to 40 to spend with the angle of horizontal direction.In the present embodiment, the angle of this chamfering is about 30 degree.
Be understandable that, this connector can also comprise the 3rd cavity 13 (not shown), and the 3rd cavity 13 can be successively set on the right side of the second cavity 12.Equally, the outer ledge of the 3rd cavity 13 selectivity can be arranged or not arrange chamfering C3 (not shown).
Similar, this connector can also comprise multiple cavity, and be arranged at the outside of the 3rd cavity 13, the outer ledge of at least one cavity in the plurality of cavity is provided with chamfering.
Fig. 1 b is the cable schematic diagram to be welded being wound with tin ring according to the embodiment of the present invention.
Cable 30 to be welded comprises outer conductor 31 and inner wire 33 and dielectric (not shown), and wherein, the outer surface of outer conductor 31 is provided with helicitic texture.Before welding, the first tin ring 32 is wrapped on outer conductor 31 according to helicitic texture.Therefore, in order to allow the first tin ring 32 mate with helicitic texture better, in the present embodiment, the cross section of the first tin ring 32 is triangle.
Preferably, the first tin ring 32 is wrapped in two or three screw threads, thus while maintenance low cost, promotes the reliability connected.
Fig. 1 c is the jockey profile according to the embodiment of the present invention; Fig. 1 d is schematic diagram when being in welding position according to the jockey of the embodiment of the present invention.
Have the second tin ring 34 in the arranged outside of the first tin ring 32, jockey also comprises the swivel nut 140 for being connected with communication equipment, sealing ring 130, the insulator 120 for being insulated by the internal and external conductor of cable, the inner wire 110 being provided with splicing ear and the housing 100 for sealing.Wherein, when being in welding position after cable 30 and connector assembles, inner wire 110 will through first and second cavity 11,12, until pass insulated terminal 120.Accordingly, in this welding position, first and second tin ring 32,34 of outer conductor 31 and its end will be in first and second cavity 11,12 respectively.Second tin ring 34 or be in the second cavity 12 afterbody.Understandable, the external diameter of the second tin ring 34 is more than or equal to the external diameter of the first tin ring 32.
When above-mentioned parts have all been installed and have been in welding position, can weld this jockey, such as, can be welded it by the mode of electromagnetic induction.
Fig. 2 a forms the schematic diagram lacking weldering after welding in prior art; Fig. 2 b is the welding schematic diagram that the formation of the foundation embodiment of the present invention connects comprehensively.
As can be seen from Fig. 2 a, in the prior art, due to tin ring tin amount not and scolding tin flowing have some setbacks (being generally the design of tail portion of connector cavity body structure to cause), easily form the region of few tin or Wuxi at welding region 170 place, thus create passive intermodulation effect.
Accordingly, adopt cavity body structure proposed by the invention, tin ring layout and welding method after, welding region 170 can be observed and be filled with tin, thus avoid this jockey to have the effect of passive intermodulation.
Refer again to Fig. 1 d and Fig. 2 b, when carrying out electromagnetism welding to this jockey, heat up comparatively fast compared to the first tin ring 32, second tin ring 34, will comparatively be introduced into complete molten state.Therefore, after the second tin ring 34 melts, the diameter due to the second cavity 12 is greater than the diameter of the first cavity 11, and therefore, the flows by action confluxed at the second cavity 12 is crossed the second cavity 12 by the tin of fusing, arrives the first cavity 11.Because the temperature of tin of fusing is higher, therefore, the fusing of the second tin ring 34 facilitates again the fusing of the first tin ring 32, thus tin can be full of the first cavity 11 and/or part second cavity 12, is formed closely and continuous print is welded to connect.
In one embodiment, the diameter of the second cavity 12 0.5 to 1.5mm larger than the diameter of the first cavity 11; And/or first diameter 0.3 to the 1mm larger than the diameter of cable outer conductor of cavity 11, thus make when the first tin ring and/or the fusing of the second tin ring, the tin of fusing can flow to the contact position of cable and connector.
Preferably, be the cable of 10-15mm for outer conductor diameter, the diameter of the first cavity 11 is about 0.5mm than this cable outer conductor diameter, and the diameter of the second cavity 12 is about 0.9mm than this cable outer conductor diameter.
In one embodiment, the axial dimension of the first cavity is 2 to 4mm, and the axial dimension of the second cavity is 4 to 5mm; Or first the axial dimension of cavity be two or three pitch of screw thread, the axial dimension of the second cavity is two to four pitch of screw thread.
The invention allows for a kind of welding method of jockey, this jockey comprises on outer conductor and arranges threaded cable, and the method comprises: provide the first tin ring, and by its according to spiral wound on outer conductor; Second tin ring is provided, and is corresponded to the first tin ring and be successively set on outer conductor; There is provided the connector shell with the first cavity and the second cavity for holding the cable being wound with the first tin ring; Melt first, second tin ring, to be formed in the first cavity and/or part second cavity 12 between outer conductor closely and continuous print is welded to connect.
In order to the first tin ring and helicitic texture can be matched, the cross section of the first tin ring is triangle, namely provides cross section to be essentially leg-of-mutton first tin ring to be wrapped in matchingly on outer conductor with screw thread.
In order to make cable be connected better with connector, first, second tin ring described can be melted by the mode of electromagnetic induction, and in the step of fusing, first melting the first tin ring and being in part in the first cavity and the second tin ring.
The cross section that it will be appreciated by persons skilled in the art that the first tin ring also can be other shapes such as rectangle, circle, when for triangle, also should consider design tolerance, need not be defined as proper triangle.
By welding method of the present invention and corresponding jockey, the passive intermodulation in radio system can be reduced, and there is lower cost, shorter manufacturing time and good electric property.
Those skilled in the art, it is understood that above-mentioned state is only for example, are not intended to limit range of application of the present invention.Those skilled in the art for often kind of application-specific, can realize described function in the mode of accommodation, but, thisly realize decision-making and should not be construed as and deviate from protection scope of the present invention.
Claims (15)
1. a jockey, comprises on outer conductor and arranges threaded cable, it is characterized in that, also comprise:
First tin ring, is wrapped on described outer conductor with described screw thread matchingly;
Connector shell, for holding the described cable being wound with described first tin ring, wherein, described connector shell also comprises the first cavity and the second cavity that are disposed adjacent;
Second tin ring, is successively set on described outer conductor corresponding to described first tin ring;
Wherein, first, second tin ring described is used for when two tin rings all melt after, forms tight between described outer conductor and continuous print and be welded to connect in described first cavity and/or part second cavity.
2. jockey as claimed in claim 1, wherein,
The cross section of described first tin ring is essentially triangle, thus makes when described first tin ring is wrapped on described outer conductor, described first tin ring and described screw thread suitable.
3. jockey as claimed in claim 1, wherein,
The diameter of described first cavity is less than the diameter of described second cavity, and the axial dimension of described first cavity is less than the axial dimension of described second cavity.
4. jockey as claimed in claim 3, wherein,
Diameter 0.5 to the 1.5mm longer than the diameter of described first cavity of described second cavity; And/or
Diameter 0.3 to the 1mm longer than the diameter of described outer conductor of described first cavity, thus make when described first tin ring and/or the fusing of the second tin ring, the tin of fusing can flow to the contact position of described cable and connector.
5. jockey as claimed in claim 3, wherein,
The axial dimension of described first cavity is 2 to 4mm, and the axial dimension of described second cavity is 4 to 5mm; Or
The axial dimension of described first cavity is two or three pitch of described screw thread, and the axial dimension of described second cavity is two to four pitch of described screw thread.
6. jockey as claimed in claim 1, wherein,
Described connector shell also comprises at least one extra cavity, at least one extra cavity described is arranged at the side relative with described first cavity of described second cavity, and the diameter of at least one extra cavity described is more than or equal to the diameter of described second cavity.
7. jockey as claimed in claim 1, wherein,
The edge of first, second cavity described is equipped with chamfering, and described chamfering is used for when described first, second tin ring fusing, and the tin contributing to melting flows to described first cavity to form weld zone, and wherein, the angle of described chamfering is 20 to 40 degree.
8. a jockey welding method of carrying out, described jockey comprises on outer conductor and arranges threaded cable, it is characterized in that, comprising:
First tin ring is provided, and by its according to described spiral wound on described outer conductor;
Second tin ring is provided, and is corresponded to described first tin ring and be successively set on described outer conductor;
There is provided the connector shell with the first cavity and the second cavity to hold the described cable being wound with described first tin ring;
Fusing first, second tin ring described, to be formed between described outer conductor closely in described first cavity and continuous print is welded to connect.
9. welding method as claimed in claim 8, wherein,
Cross section is provided to be essentially leg-of-mutton described first tin ring to be wrapped in matchingly on described outer conductor with described screw thread.
10. welding method as claimed in claim 8, wherein,
Melt first, second tin ring described by the mode of electromagnetic induction, and first melt described first tin ring and be in part in described first cavity and the second tin ring.
11. welding methods as claimed in claim 8, wherein,
The diameter of described first cavity is less than the diameter of described second cavity, and the axial dimension of described first cavity is less than the axial dimension of described second cavity.
12. welding methods as claimed in claim 11, wherein,
Diameter 0.5 to the 1.5mm larger than the diameter of described first cavity of described second cavity; And/or the diameter of described first cavity 0.3 to 1mm larger than the diameter of described outer conductor, thus make when melting described first tin ring and/or the second tin ring, the tin of fusing can flow to the contact position of described cable and connector.
13. welding methods as claimed in claim 11, wherein,
The axial dimension of described first cavity is 2 to 4mm, and the axial dimension of described second cavity is 4 to 5mm; Or
The axial dimension of described first cavity is two or three pitch of described screw thread, and the axial dimension of described second cavity is two to four pitch of described screw thread.
14. welding methods as claimed in claim 8, wherein,
Described connector shell also comprises at least one extra cavity, at least one extra cavity described is arranged at the side relative with described first cavity of described second cavity, and the diameter of at least one extra cavity described is more than or equal to the diameter of described second cavity.
15. welding methods as claimed in claim 8, wherein,
The edge of first, second cavity described is equipped with chamfering, and described chamfering is used for when described first, second tin ring fusing, and the tin contributing to melting flows to described first cavity to form weld zone, and wherein, the angle of described chamfering is 20 to 40 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432338.4A CN105406305A (en) | 2014-08-28 | 2014-08-28 | Low-passive-intermodulation coaxial connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410432338.4A CN105406305A (en) | 2014-08-28 | 2014-08-28 | Low-passive-intermodulation coaxial connector |
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| Publication Number | Publication Date |
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| CN105406305A true CN105406305A (en) | 2016-03-16 |
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| CN201410432338.4A Pending CN105406305A (en) | 2014-08-28 | 2014-08-28 | Low-passive-intermodulation coaxial connector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107942157A (en) * | 2017-10-31 | 2018-04-20 | 广东生益科技股份有限公司 | Passive cross modulation test fixture and device |
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| CN101179173A (en) * | 2007-10-22 | 2008-05-14 | 常州安费诺福洋通信设备有限公司 | Contact pin jack type coaxial ripple cable connector |
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| CN107942157A (en) * | 2017-10-31 | 2018-04-20 | 广东生益科技股份有限公司 | Passive cross modulation test fixture and device |
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