CN203039200U - Coaxial connecting line - Google Patents

Coaxial connecting line Download PDF

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Publication number
CN203039200U
CN203039200U CN 201220512850 CN201220512850U CN203039200U CN 203039200 U CN203039200 U CN 203039200U CN 201220512850 CN201220512850 CN 201220512850 CN 201220512850 U CN201220512850 U CN 201220512850U CN 203039200 U CN203039200 U CN 203039200U
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CN
China
Prior art keywords
coaxial
braid
head
coated
connecting line
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Expired - Fee Related
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CN 201220512850
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Chinese (zh)
Inventor
何子佑
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SHENZHEN HEHONG INDUSTRIAL CO., LTD.
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Shenzhen D & S Industries Ltd
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Priority to CN 201220512850 priority Critical patent/CN203039200U/en
Priority to PCT/CN2013/072288 priority patent/WO2014048086A1/en
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Publication of CN203039200U publication Critical patent/CN203039200U/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
    • H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts

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  • Coupling Device And Connection With Printed Circuit (AREA)
  • Insulated Conductors (AREA)

Abstract

The utility model discloses a coaxial connecting line, comprising a coaxial line and an F head connected with the coaxial line, wherein the F head is made of a zinc alloy material. The F head comprises a joint main body (5) and a central needle (6). The joint main body (5) comprises a joint portion (51), a nut-shaped ring (52) connected with the joint portion (51) and a joint portion (53) connected with the nut-shaped ring (52). The central needle (6) is connected with the joint main body (5) through a connection fixing component (7). A distance H from the nut-shaped ring (52) to an edge of the joint portion (51) is not lower than 5.5mm. The coaxial connecting line is advantaged by good shield effect, high fastness, and relatively low cost.

Description

A kind of coaxial connecting line
Technical field
The utility model relates to the coaxial line field, particularly a kind of coaxial connecting line.
Background technology
Coaxial connecting line is connected and composed by coaxial line and F head usually, yet F head in the market, most of shield effectiveness is not fine, and fastness existing problems, be easy to occur loosening during drawing, and manufacturing cost is also than higher, thereby caused the shield effectiveness of coaxial connecting line neither be fine, and fastness also has problems, and manufacturing cost is also than higher.
The utility model content
In view of this, main purpose of the present utility model is to provide that a kind of shield effectiveness is good, fastness is high and lower-cost coaxial connecting line.
The utility model provides a kind of coaxial connecting line, comprise coaxial line and the F head that is connected mutually with described coaxial line, wherein, the F head that described F head is the kirsite material, described F head comprises: adapter body (5), described adapter body (5) comprise intercalation part (51), the nut shape ring (52) that links to each other with described intercalation part (51) and the connector portions (53) that is connected with described nut shape ring (52);
Center needle (6), described center needle (6) links to each other with described adapter body (5) by being connected and fixed part (7);
Described nut shape ring (52) is not less than 5.5mm with the distance H at described intercalation part (51) edge.
Wherein, the afterbody of described center needle (6) is provided with welding groove (8).
Wherein, described coaxial line comprises inner wire (1), is coated on the outer insulating barrier (2) of described inner wire (1), is coated on the coaxial outer conductor (3) of described insulating barrier (2) outside and described inner wire (1) and is coated on sheath (4) outside the described outer conductor (3); It is characterized in that described outer conductor (3) comprises the aluminium foil (31) that is coated on described insulating barrier (2) outside and be coated on first braid (32) in the described aluminium foil outside that described first braid (32) is the steel braid.
Wherein, the steel wire of described first braid (32) outside is coated with the copper layer.
Wherein, described outer conductor (3) also comprises second braid (32 '), is provided with aluminium foil (31) between described second braid (32 ') and described first braid.
Wherein, the steel wire of described second braid (32 ') outside is coated with the copper layer.
In the utility model, because described F head comprises adapter body (5), described adapter body (5) comprises intercalation part (51), the nut shape ring (52) that links to each other with described intercalation part (51) and the connector portions (53) that is connected with described nut shape ring (52), and comprise center needle (6), described center needle (6) links to each other with described adapter body (5) by being connected and fixed part (7), and the distance H at described nut shape ring (52) and described intercalation part (51) edge is not less than 5.5mm.Thereby make the shield effectiveness of described F head good, fastness is high.And, because the F head that described F head is the kirsite material, so cost is lower.Therefore, possess described F head coaxial connecting line shield effectiveness also better, fastness is also higher and cost is also lower.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to the accompanying drawing that provides.
The structural representation of the coaxial line that Fig. 1 provides for the utility model;
Screen was to the shielding schematic diagram of electromagnetic energy when Fig. 2 passed screen for electromagnetic energy;
The structural representation of the F head that Fig. 3 provides for the utility model;
Fig. 4 is the partial sectional view of Fig. 3 center tap main body.
Embodiment
Main purpose of the present utility model is to provide that a kind of shield effectiveness is good, fastness is high and lower-cost coaxial connecting line.
In order to make those skilled in the art understand the technical solution of the utility model better, the utility model is described in further detail below in conjunction with the drawings and specific embodiments.
The utility model provides a kind of coaxial connecting line, comprises coaxial line and the F head that is connected mutually with described coaxial line, wherein, and the F head that described F head is the kirsite material.Please refer to Fig. 2, the structural representation of the coaxial line that the coaxial connecting line that Fig. 2 provides for the utility model comprises.As shown in Figure 2, the coaxial line that provides of the utility model comprises inner wire 1, is coated on the outer insulating barrier 2 of inner wire 1, is coated on the coaxial outer conductor 3 of insulating barrier 2 outsides and inner wire 1 and the sheath 4 that is coated on outer conductor 3 outsides; Wherein, outer conductor 3 comprises the aluminium foil 31 that is coated on insulating barrier 2 outsides and first braid 32 that is coated on aluminium foil 31 outsides, and this first braid 32 is the steel braid.
The outer conductor of coaxial line of the prior art, also comprise aluminium foil and the aluminium braid that is coated on the aluminium foil outside, its braided material is naked copper, because the count of braid is big, the braiding radical is many, requires coverage rate big, so the naked copper consumption is also a lot, because rising steadily of copper valency, the production cost of coaxial line is also more and more higher.The coaxial line that the utility model provides, first braid 32 of its outer conductor is the steel braid, therefore the comparatively cheap steel of price of namely having worked out material selection has reduced the cost of coaxial line effectively.
The coaxial line that the utility model provides also is coated with the copper layer in the outside of steel braid.As can be known, though the utility model can effectively reduce the cost of coaxial line by adopting the lower steel of price as braided material, yet the hardness ratio of steel is bigger, is unfavorable for braiding, in order to address this problem, cross the copper layer in the steel wire outside that does not take up one's knitting, namely make the form of copper covered steel, as braided material, reduce the difficulty of braiding effectively, improved the electric conductivity of outer conductor simultaneously.
In above-mentioned specific embodiment, only consider the reduction of coaxial line cost, yet, for coaxial line, the assessment of its shielding properties and electromagnetic exposure is that the shielding attenuation by cable characterizes, and the shielding attenuation of coaxial line is an important electricity function index of cable.The outer conductor 3 of coaxial line is not only a lead that transmits the loop, has shielding action again simultaneously, and the structure and material of screen (being outer conductor 3) directly has influence on shield effectiveness.
Shielding attenuation may be defined as interfere with electromagnetic field by the pad value behind the screen, and namely the value of shielding attenuation is to represent that with the logarithm of the ratio of the electric field strength after the electric field strength E of space point or magnetic field intensity H and this conductively-closed or magnetic field intensity formula is as follows:
As = ln | E E B | = ln | H H B | = ln | 1 S | (napier)
As = 20 lg | 1 S | (decibel)
In the formula:
A s-shielding attenuation (how or decibel)
The electric field strength of E-space point (volt/rice)
E BThe electric field strength of this point after-conductively-closed (volt/rice)
The magnetic field intensity of H-space point (peace/rice)
H BThe magnetic field intensity of this point after-conductively-closed (peace/rice)
The S-shielding factor
Please refer to Fig. 2, screen was to the shielding schematic diagram of electromagnetic energy when Fig. 2 passed screen for electromagnetic energy.
When electromagnetic energy was passed screen (being outer conductor 3), the direction of energy was vertical with the transmission direction of lead, radiate by screen medium direction.Cable shield mainly plays by three aspects and weakens the electromagnetic effect of disturbing, comprising: absorb energy, reflected energy, counteracting energy.Absorb energy and refer to the part that energy loses in passing the process of screen, so it is because the thermal losses of the interior eddy current of metal rises.Under and the situation that screen is more thick more high when frequency of utilization, shield effectiveness is more good.Reflected energy refers to when electromagnetic energy reaches screen, want some energy to reflect at the interface of dielectric and screen, the metal of the reflective because dielectric wave impedance of energy and screen is inconsistent to be caused, refer to the reverse electromagnetic field that electromagnetic wave produces at screen and offset energy, energy is offset part disturb electromagnetic wave, the concrete absorption of expression screen that Fig. 3 can be vivid and the process of reflected energy:
As can be known, the factor that influences shielding attenuation mainly is structure and the manufacturing process of screen, and the utility model has solved the cost problem by the material that changes screen (being outer conductor 3), solves performance issue by the structure that changes screen (being outer conductor 3).From absorbing the effect of shielding, copper is better than steel; From the effect of reflecting barrier, copper is better than steel, and the overall performance of visible copper product is better than steel.This also is the reason that present coaxial line generally adopts naked copper.Yet the cost of copper will be higher than steel far away.Adopt steel to do screen in order to save cost.
In summary, screen is mainly by three aspects: absorption energy, reflected energy, counteracting energy play and weaken the electromagnetic effect of disturbing, and increase shielding thickness, can strengthen shield effectiveness.Verify with formula below:
S = S n S f = 1 ch j Kt · 1 1 + 1 2 ( N + 1 N ) th j Kt
Wherein: S nFor absorbing shielding factor
S n = 1 ch j Kt
S fBe the reflecting barrier coefficient
S f = 1 1 + 1 2 ( N + 1 N ) ch j Kt
In the formula:
The eddy current coefficient of K-screen metal (1/ millimeter).
K = ωμσ :
The thickness (millimeter) of t-screen metal:
The ratio of N-medium wave impedance and metal wave impedance,
N = Z G Z M :
Z G=j ω μ 0r sThe wave impedance of-medium (Europe):
Figure BSA00000786042100056
The wave impedance of-shielded metal (Europe):
r s-screen inside radius (millimeter).
From above-mentioned formula as can be seen, screen metal thickness t doubles, and shielding factor S reduces 3/4, and shielding attenuation is more big, and shield effectiveness is more good.As seen the shielding thickness influence is fairly obvious, even be not so good as under the condition of copper at other coefficients, still can solve the shielding problem by increasing shielding thickness.
Therefore, the coaxial line that the utility model provides, its outer conductor 3 also comprise second braid 32 ', second braid 32 ' and first braid between be provided with aluminium foil 31.Be about to the structure that one deck aluminium foil that structure that original one deck aluminium foil adds one deck braiding becomes two repetitions adds one deck braiding.Remedy the shortcoming of material aspect by increasing shielding thickness, thereby reach the saving cost, do not influence the purpose of shielding properties again.
Similarly, second braid 32 ' the steel wire outside also be coated with the copper layer.
The utility model also provides a kind of coaxial connecting line, comprises coaxial line and the F head that is connected mutually with coaxial line, wherein, and the F head that described F head is the kirsite material; Wherein coaxial line adopts the coaxial line of structure shown in Figure 1.
F head of the prior art adopts the mode of punching press to connect, and the mode shortcoming of punching press is exactly that the joint breaks away from easily, is unable to undergo pulling force, if firmly, the easy disengaging, by changing the structure of joint, makes that connection is more firm in the utility model.
Please refer to Fig. 3 and Fig. 4, the structural representation of the F head of the kirsite material that Fig. 3 provides for the utility model; Fig. 4 is the partial sectional view of Fig. 3 center tap main body.
The F head of kirsite material of the present utility model comprises: adapter body 5, center needle 6, and connect both be connected and fixed part 7, wherein, adapter body 5 comprises the nut shape ring 52 that intercalation part 51 links to each other with intercalation part 51 and the connector portions 53 that is connected with nut shape ring 52; Nut shape ring 52 is not less than 5.5mm with the distance H at intercalation part 51 edges.
In the standard of ANSISCTE124F head, require the F head need withstand the torsion-testing of 6.75N.m, F in the market 90% can't reach test request.As everyone knows, T=FL in the computing formula of moment of torsion, wherein T is that moment of torsion, F are that power, L are the arm of force.Power F is changeless in the test, in order to increase torque T, we can only realize by increasing moment L, therefore, and in the utility model, with nut shape ring 52, moved a segment distance backward, guaranteed at least to be not less than 5.5mm with the distance H at intercalation part edge, particularly, among a kind of embodiment that in the utility model, provides, accomplished 8.0 ± 2mm.
On the other hand, for the ease of being connected of F head and coaxial line, be provided with welding groove 8 at the afterbody of the center needle 6 of F head.During connection, with welding in inner wire 1 this welding groove 8 of insertion of coaxial line, other positions of coaxial line link to each other with the connector portions 53 of F head, thereby easily the F head are linked to each other with coaxial line, are convenient to processing, have saved man-hour, have reduced cost to a certain extent.
As can be known, the F head that the coaxial line that the utility model provides not only is confined to provide with the utility model connects, and can also be connected for 9.5 joints that provide among the ZL20060016338.7 with Chinese patent application number.
In the utility model, because described F head comprises adapter body 5, described adapter body 5 comprises intercalation part 51, the nut shape ring 52 that links to each other with described intercalation part 51 and the connector portions 53 that is connected with described nut shape ring 52, and comprise center needle 6, described center needle 6 links to each other with described adapter body 5 by being connected and fixed part 7, and the distance H at described nut shape ring (52) and described intercalation part 51 edges is not less than 5.5mm.Thereby make the shield effectiveness of described F head good, fastness is high.And, because the F head that described F head is the kirsite material, so cost is lower.Therefore, possess described F head coaxial connecting line shield effectiveness also better, fastness is also higher and cost is also lower.
More than a kind of coaxial connecting line provided by the utility model is described in detail.Used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection range of the utility model claim.

Claims (6)

1. coaxial connecting line, comprise coaxial line and the F head that is connected mutually with described coaxial line, it is characterized in that, the F head that described F head is the kirsite material, described F head comprises: adapter body (5), described adapter body (5) comprise intercalation part (51), the nut shape ring (52) that links to each other with described intercalation part (51) and the connector portions (53) that is connected with described nut shape ring (52);
Center needle (6), described center needle (6) links to each other with described adapter body (5) by being connected and fixed part (7);
Described nut shape ring (52) is not less than 5.5mm with the distance H at described intercalation part (51) edge.
2. coaxial connecting line according to claim 1 is characterized in that, the afterbody of described center needle (6) is provided with welding groove (8).
3. coaxial connecting line according to claim 1 and 2, it is characterized in that described coaxial line comprises inner wire (1), be coated on the outer insulating barrier (2) of described inner wire (1), be coated on the coaxial outer conductor (3) of described insulating barrier (2) outside and described inner wire (1) and be coated on sheath (4) outside the described outer conductor (3); Described outer conductor (3) comprises the aluminium foil (31) that is coated on described insulating barrier (2) outside and is coated on first braid (32) in the described aluminium foil outside that described first braid (32) is the steel braid.
4. coaxial connecting line according to claim 3 is characterized in that, the steel wire outside of described first braid (32) is coated with the copper layer.
5. coaxial connecting line according to claim 3 is characterized in that, described outer conductor (3) also comprises second braid (32 '), is provided with aluminium foil (31) between described second braid (32 ') and described first braid.
6. coaxial connecting line according to claim 5 is characterized in that, the steel wire outside of described second braid (32 ') is coated with the copper layer.
CN 201220512850 2012-09-29 2012-09-29 Coaxial connecting line Expired - Fee Related CN203039200U (en)

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CN 201220512850 CN203039200U (en) 2012-09-29 2012-09-29 Coaxial connecting line
PCT/CN2013/072288 WO2014048086A1 (en) 2012-09-29 2013-03-07 Coaxial connecting line

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106711634A (en) * 2016-12-29 2017-05-24 惠州市和宏电线电缆有限公司 Compression-resistant type coaxial cable for improving shielding effect, and connection method thereof

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US6471545B1 (en) * 1993-05-14 2002-10-29 The Whitaker Corporation Coaxial connector for coaxial cable having a corrugated outer conductor
CA2428893C (en) * 2002-05-31 2007-12-18 Thomas & Betts International, Inc. Connector for hard-line coaxial cable
CN2704138Y (en) * 2004-01-16 2005-06-08 富士康(昆山)电脑接插件有限公司 Cable connector
US7278887B1 (en) * 2006-05-30 2007-10-09 John Mezzalingua Associates, Inc. Integrated filter connector
CN201113045Y (en) * 2007-09-20 2008-09-10 西安科耐特科技有限责任公司 WElding-free high-performance radio frequency connector
CN201226263Y (en) * 2008-06-12 2009-04-22 徐建军 Four-shielding coaxial cable
CN201946361U (en) * 2011-01-13 2011-08-24 杭州创美实业有限公司 Buried explosion-proof coaxial cable
CN202352387U (en) * 2011-12-07 2012-07-25 江苏西贝电子网络有限公司 Signal wire of cable television

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106711634A (en) * 2016-12-29 2017-05-24 惠州市和宏电线电缆有限公司 Compression-resistant type coaxial cable for improving shielding effect, and connection method thereof
CN106711634B (en) * 2016-12-29 2022-12-09 惠州市和宏电线电缆有限公司 Connection method of compression-resistant coaxial cable with improved shielding effect

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Address after: 518040 Che Kung Temple Futian Tian Tian hi tech building B1001-1003, Shenzhen, Guangdong, Futian District

Patentee after: SHENZHEN HEHONG INDUSTRIAL CO., LTD.

Address before: 518040 Che Kung Temple Futian Tian Tian hi tech building B1001-1003, Shenzhen, Guangdong, Futian District

Patentee before: Shenzhen D & S Industries Limited

CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20130703

Termination date: 20200929