CN1464594A - Processing method for mounting connector on coaxial cable - Google Patents
Processing method for mounting connector on coaxial cable Download PDFInfo
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- CN1464594A CN1464594A CN 02122923 CN02122923A CN1464594A CN 1464594 A CN1464594 A CN 1464594A CN 02122923 CN02122923 CN 02122923 CN 02122923 A CN02122923 A CN 02122923A CN 1464594 A CN1464594 A CN 1464594A
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Abstract
The present invention relates to a processing method for assembling coupler in coaxial cable, in which, by the way of sheathing wiring skin to each of grounding conductors so as to add diameter thereof. It could solve easy turnout problem of the grounding conductors existing in the case of the coaxial cable and 2mmfb coupler being coupled. In addition, By the way of suiting a cut of phi 1mm thermal shrinkable sleeve tube with the joining point of PE insulation and teflon insulation as center, and installing PE insulation to the outside of enveloping curve sheet during pressure welding, it could prevent the enveloping curve sheet of splicing ear and crossbeam of terminal plug-in being spoiled by PE insulation of subminiature coaxial cable. Further, by the way of applying arcking mode flay to sparkle insulation of pico coaxial cable, it could prevent easy broken problem for internal conductor of the pico coaxial cable positioned at the two sides of the coupler.
Description
Technical field
The present invention relates to transmit, used cable in the communication product such as exchange, Access Network, more particularly, relate to a kind of on coaxial cable the processing method of attaching connector.
Background technology
In transmission, exchange, products such as Access Network, (E1 is the abbreviation to basic group standard PCM30 in the digital system for the E1 signal that transmits 2M, it is a kind of standard interface, G.703 its electric interfaces meets, G.704 frame structure meets, bit rate is the PCM primary group, comprise 1 take-up TX and hair line RX, general transmission range is several kms), generally be to adopt 2mmFB connector (also claiming the FCI4*6 connector) to cooperate with 75 ohm of miniature diameter coaxial cables, or cooperate with 75 ohm of slight coaxial cables, this dual mode can satisfy the requirement of the high density outlet of present communication apparatus in the confined space well.
One, miniature diameter coaxial cable
75 ohm of miniature diameter coaxial cables that use have single cored structure at present, and 8 cored structures are also arranged.Being that model is the structural representation of the single core coaxial cable 1 of SFYZ-75-2-1 (A) as shown in Figure 1, is single core sheath 101, single core metal braiding 102, earthing conductor 103, PE insulation 104, F46 (polytetrafluoroethylene) insulation 105 and inner wire 106 from outside to inside successively.Wherein, the external diameter of single core coaxial cable 1 is 2.7-2.9mm, and the external diameter of PE insulation 104 is 1.35-1.55mm, and the external diameter of F46 insulation 105 is 0.55mm.Be that model is the structure diagram of the 8 core miniature diameter coaxial cables 2 of SFYZ75-2-1*8 (A) as shown in Figure 2, be equivalent to the single core miniature diameter coaxial cable 1 shown in 8 chromosomes 1 is wrapped in together that the outside has increased tear line 207, polyester band 208 and oversheath 209.
Two, slight coaxial cable
75 ohm of slight coaxial cables that use have only 8 cored structures at present, be that model is the structural representation of the 75 Ou Wei miniature diameter coaxial cables of SFYFZ-75-2*8 as shown in Figure 3, as can be seen from the figure, for each root single-core cable wherein, be earthing conductor 303, single core metal braiding 302, foamed insulation 304, F46 insulation 305 and inner wire 106 from outside to inside successively.Outer bread polyester belt 307, inner sheath 308, total metal knitted 309 and oversheath 310, equally also be provided with tear line 311.As seen the main distinction of it and miniature diameter coaxial cable is to have increased total metal knitted 309 as total screen, and the size of core changes to some extent, wherein the external diameter of single core is 0.247-0.257mm, and the external diameter of foamed insulation 304 is 1.25-1.35mm, and the external diameter of F46 insulation 305 is 0.55mm.
Three, connector
2mmFB connector commonly used at present has outlet density height, connects advantages such as reliable, and its structure as shown in Figure 4.Whole connector 4 is made of terminal plug 401 and casing assembly 402 two parts.Be the enlarged diagram of a splicing ear 404 of taking-up from the terminal plug 401 of connector 4 as shown in Figure 5, comprise terminal contact 405, the preceding edge of a knife 406, the back edge of a knife 407 and envelope curve sheet 408.Be as shown in Figure 6 in the terminal 404 crimping the vertical view during lead 5, concrete crimping process as shown in Figure 7, the A-A when Fig. 7 is equivalent in Fig. 6 crimping lead analyses and observe effect.The edge of a knife can puncture the insulation of lead before and after in the crimping process, contact with conductor inside, and after the crimping, the insulated hull of lead is positioned at the bottom of the terminal edge of a knife for best, and lead location is simple and easy excessively to cause loose contact, and mistake deeply easily causes wire fracture.
Four, existing processing technology
Introduce micro coaxle, the processing technology when coaxial cable cooperates with the 2mmFB connector slightly below, may further comprise the steps:
The 4-1 cable rolls off the production line, peeling, cover heat-shrinkable T bush
To miniature diameter coaxial cable and slight coaxial cable, can adopt special-purpose wire stripping pliers or coaxial cable peeling machine, carry out peeling according to the requirement of special process standard and cable design drawing, and suit heat-shrinkable T bush 6.
4-1-1 as shown in Figure 8, peels off its single core sheath 101 and single core metal braiding 102 earlier for miniature diameter coaxial cable, exposes earthing conductor 103, peels off one section PE insulation again, exposes the inner wire with F46 insulation 105.
4-1-2 is for slight coaxial cable, as shown in Figure 9, peels off its oversheath 310 and total metal knitted 309 earlier, exposes inner sheath 308; Then inner sheath 308 is peelled off one section, expose internal core; Again the single core braiding 302 of each root core is peelled off one section, make the root of itself and inner sheath that certain distance be arranged; Again foamed insulation 304 is peelled off one section, the root that itself and single core are woven has certain distance, exposes the inner wire of band F46 insulation 305 at last.In addition, on the oversheath of cable and inner sheath, respectively be with a heat-shrinkable T bush 6.
4-2 overlaps casing
As shown in figure 10, the casing assembly 402 with connector 4 is sleeved on the cable in advance.
4-3 wiring, crimping
The attaching of 2mmFB connector and miniature diameter coaxial cable or slight coaxial cable is undertaken by terminal crimping connector.During operation, cable is fixed on the fixed station of terminal crimping connector, and will needs the core of crimping to be fixed on terminal plug 401 tops, align with corresponding crimping position; After the startup terminal crimping connector is finished the single face crimping operation, carry out the crimping of another side again.Be pressed into respectively in the terminal plug 401 interior splicing ears with earthing conductor and with the inner wire that F46 insulate during crimping, the effect after the crimping as shown in figure 11.
The 4-4 general assembly
The heat-shrinkable T bush of suit in advance is pushed into terminal plug 401 roots, or according to the requirement of cable design drawing, with heat gun it is blown and contract; The connector shell assembly 402 of suit is pushed into terminal plug 401 places in advance again, and clamps with terminal plug 401, and the assembling finished product as shown in figure 12.
The shortcoming of five prior aries
Because the most suitable and 2mmFB connector coupling is the flat or twisted-pair feeder of 28AWG-30AWG, so when adopting this connector to cooperate, have following problem with miniature diameter coaxial cable or slight coaxial cable:
5-1 is for miniature diameter coaxial cable and slight coaxial cable, the line footpath of the earthing conductor of each root core is thinner, and there is not the tape insulation layer, external diameter is 0.28mm only, when in the splicing ear that it is crimped on the 2mmFB connector, because the envelope curve sheet 408 compressible core minimum outer diameter in the splicing ear 404 are 0.8mm, external diameter much larger than earthing conductor, so the envelope curve sheet does not play any fixation after crimping,, be easy to cause earthing conductor to disconnect at this place in case be subjected to the external force effect.
5-2 in the crimping process of inner wire, as shown in figure 13, needs to push down with envelope curve sheet 408 the PE insulation position of core for miniature diameter coaxial cable, plays the effect that compresses core to guarantee the envelope curve sheet; But because the external diameter of core PE insulating barrier too big (1.35-1.55mm) is easy to damage the envelope curve sheet; Simultaneously, for the inner wire that guarantees core can crimping puts in place, in the crimping process, the PE of core insulation possibly will be as the crossbeam pressure break of the connector of arrow indication among Figure 14.
5-3 is for slight coaxial cable, when it and connector attaching, the peeling of each single core measure-alike (as shown in Figure 9) in the prior art, after in being crimped onto terminal plug, because the direction of extension difference of each core, as arrow indication among Figure 15, can there be prestressing force in the core that is positioned at both sides, in the process of using, the bending of cable can produce certain external carbuncle, the core that is crimped on the terminal both sides may disconnect or switch-on and-off because of stressed, thereby causes equipment fault or fluctuation of service.According to the statistics of present use, situation such as adopt the cable of said method processing to have approximately 15% to have occurred opening circuit, switch-on and-off, signal quality are bad, even also there is the hidden danger of loose contact in the temporary transient cable that can normally use.The way that a present solution is opened circuit is welded breakpoint, but can cause the lead at solder joint place more crisp hard, still fracture easily in the process of using.
Summary of the invention
The present invention is directed to existing above-mentioned defective in the existing processing technology, provide a kind of on coaxial cable the processing method of assembly connector, the earthing conductor that exists when solving coaxial cable and the attaching of the 2mmFB connector problem that easily opens circuit, the PE insulation that also solves miniature diameter coaxial cable simultaneously can damage the problem of the crossbeam of the envelope curve sheet of splicing ear and terminal plug, and is positioned at the problem that the inner wire of connector both sides easily opens circuit slightly in the coaxial cable.
Technical program of the present invention lies in, a kind of on coaxial cable the processing method of assembly connector, it is characterized in that, may further comprise the steps:
A, get one section coaxial cable, peel off its crust, until exposing its inner earthing conductor and, and on cable cover(ing), overlap heat-shrinkable T bush with the inner wire of teflon insulation;
B, the cable after the peeling is handled, cover wiring skin on each root earthing conductor is to increase its external diameter;
C, be sleeved on the casing assembly of connector on the coaxial cable in advance;
D, with the earthing conductor of the wired skin of described cover be crimped on the inner wire of teflon insulation in the corresponding splicing ear in the terminal plug of connector;
E, adjust the heat-shrinkable T bush of suit in advance, and will be sleeved on described casing assembly on the cable in advance and the described terminal plug after the crimping clamps, finish assembling process.
According to method of the present invention, the connector among the described step c is the 2mmFB connector.
According to method of the present invention, in described step b, the line skin that is overlapped on the described earthing conductor is that specification is the line skin of the service cable of 28AWG-30AWG.
According to method of the present invention, in described step a, for slight coaxial cable, single core braiding of each root core in peelling off cable, after exposing its foamed insulation, adopt arc wire stripping mode to peel off the foamed insulation of each root core, expose the inner wire with teflon insulation, the foamed insulation that core kept that is positioned at during the longest and crimping of the foamed insulation that core kept that is positioned at the terminal plug both sides when making crimping in the middle of the terminal plug is the shortest.Wherein, the foamed insulation that core kept in the middle of described being positioned at is 8-12mm to the length of its single core braiding root; The described foamed insulation that core kept that is positioned at both sides will grow more than the 5mm than the length that core kept in the middle of being positioned to the distance that its single core weaves root.
According to method of the present invention, in described step b, for miniature diameter coaxial cable, also the junction with PE insulation and teflon insulation is the center, one section φ 1mm of suit heat-shrinkable T bush, the part of described φ 1mm heat-shrinkable T bush is enclosed within the PE insulation, and another part is enclosed within on the teflon insulation, with heat gun it is blown then and contracts.Correspondingly, in described steps d, for miniature diameter coaxial cable, to be crimped on the front and back knife-edge part of described splicing ear with the inner wire of polytetrafluoroethylene during crimping, and with described suit with the polytetrafluoroethylene inner wire one section of described φ 1mm heat-shrinkable T bush be pressed in the envelope curve sheet of described splicing ear.
The present invention is by adopting new processing technology, and the reliability in the time of can improving the assembling of connector and miniature diameter coaxial cable and slight coaxial cable improves the electric property and the mechanical performance of cable greatly, and cuts down finished cost.
The invention will be further described below in conjunction with drawings and Examples.
Description of drawings
Fig. 1 is that model is the structural representation of the single core coaxial cable of SFYZ-75-2-1 (A);
Fig. 2 is that model is the structure diagram of the 8 core miniature diameter coaxial cables of SFYZ75-2-1*8 (A);
Fig. 3 is that model is the structural representation of the 75 Ou Wei miniature diameter coaxial cables of SFYFZ-75-2*8;
Fig. 4 is the decomposition chart of 2mmFB connector;
Fig. 5 is the enlarged drawing of the splicing ear of terminal plug taking-up shown in Figure 4;
Fig. 6 is the vertical view of taking by force in splicing ear shown in Figure 5 when connecing lead;
Fig. 7 is the A-A cutaway view of the crimping process of lead shown in Fig. 6 and splicing ear;
Fig. 8 is the schematic diagram after the miniature diameter coaxial cable peeling;
Fig. 9 is the schematic diagram behind the slight coaxial cable peeling;
Figure 10 is the schematic diagram of the casing assembly of pre-add-in connectors;
Figure 11 is that cable core is crimped onto terminal plug schematic diagram afterwards;
Figure 12 is the schematic diagram that assembles when finishing;
Figure 13 is the schematic diagram when the envelope curve sheet encases the PE insulation in the prior art;
Figure 14 is the enlarged diagram of the terminal plug of connector;
Figure 15 is that the core of slight coaxial cable is crimped onto terminal plug schematic diagram afterwards;
Figure 16 is the schematic diagram of in the inventive method the miniature diameter coaxial cable after the peeling being handled;
Figure 17 is the schematic diagram of envelope curve sheet when encasing heat-shrinkable T bush;
Figure 18 is the schematic diagram that among the present invention slight coaxial cable is carried out the arc peeling.
Embodiment
Introduce in the method for the invention below, the processing technology when miniature diameter coaxial cable and slight coaxial cable cooperate with the 2mmFB connector may further comprise the steps:
The 6-1 cable rolls off the production line, peeling, cover heat-shrinkable T bush
To micro coaxle and slight coaxial cable, can adopt special-purpose wire stripping pliers or coaxial cable peeling machine, carry out peeling according to the requirement of special process standard and cable design drawing, and suit heat-shrinkable T bush 6:
6-1-1 as shown in Figure 8, peels off its single core sheath 101 and single core metal braiding 102 earlier for miniature diameter coaxial cable, exposes earthing conductor 103, peels off one section PE insulation again, exposes the inner wire with F46 insulation 105.
6-1-2 is for slight coaxial cable, as shown in figure 18, peels off its oversheath 310 and total metal knitted 309 earlier, exposes inner sheath 308; Again inner sheath 308 is peelled off one section, expose internal core; Again the single core braiding 302 of each root core is peelled off one section, make the root of itself and inner sheath that certain distance be arranged.Single core braiding 302 of each root core in peelling off cable, after exposing its foamed insulation, the core that in use is crimped on both sides according to slight coaxial cable among the present invention easily opens circuit and the situation of switch-on and-off occurs, adopt arc wire stripping mode to divest foamed insulation 304, the foamed insulation that core kept that is positioned at during the longest and crimping of the foamed insulation that core kept that is positioned at the terminal plug both sides when making wherein crimping in the middle of the terminal plug is the shortest; Wherein, the foamed insulation that core kept in the middle of being positioned at can be 8-12mm to the length of its single core braiding root, and the length difference between the longest and the shortest should be equal to or greater than 5mm.In addition, need on the oversheath of cable and inner sheath, respectively be with a heat-shrinkable T bush 6 equally.
6-2 crimping core is handled
This is the step that the present invention increases newly,
6-2-1 earthing conductor cover wiring skin
For miniature diameter coaxial cable and slight coaxial cable, the suit specification is the service cable line skin of 28AWG-30AWG on each root earthing conductor.Be the situation when miniature diameter coaxial cable is implemented as shown in figure 16, the external diameter of this line skin 109 is about 0.8mm, and the envelope curve sheet 408 in the splicing ear 404 can compress the minimum outer diameter of core is 0.8mm, as seen the envelope curve sheet can play good fixation for the earthing conductor that puts behind the 28AWG service cable line skin, can not cause earthing conductor to disconnect at this place because of being subjected to the external force effect.
6-2-2 miniature diameter coaxial cable cover crimping heat-shrinkable T bush
For coaxial cable, as shown in figure 16, get the heat-shrinkable T bush 108 of one section φ 1mm, junction with PE insulation 104 and teflon insulation 105 is the center, a part is enclosed within the PE insulation 104, and another part is enclosed within on the teflon insulation 105, with heat gun it is blown then and contracts.
6-3 overlaps casing
As shown in figure 10, the casing assembly 402 with connector 4 is sleeved on the cable in advance.
6-4 wiring, crimping
In this step, also be to be pressed in the 2mmFB connector by the inner wire of terminal crimping connector with miniature diameter coaxial cable or slight coaxial cable, but in the methods of the invention, all overlapped the line skin of service cable on the earthing conductor because of miniature diameter coaxial cable and slight coaxial cable, so crimping is the earthing conductor of having the line skin, rather than the earthing conductor that exposes in the prior art; In addition, for miniature diameter coaxial cable, because of suit the heat-shrinkable T bush of one section φ 1mm, crimping at first will be crimped on two knife-edge parts of splicing ear with the inner wire of polytetrafluoroethylene, to be pressed in the envelope curve sheet 408 with this section that is with heat-shrinkable T bush 108 of the inner wire of polytetrafluoroethylene simultaneously, as shown in figure 17, as seen PE insulation this moment 104 is not at the outer of envelope curve sheet and in the envelope curve sheet, what contact with the crossbeam of envelope curve sheet and terminal plug is one section less heat-shrinkable T bush of external diameter, thereby has solved the problem that PE insulation in the prior art can damage envelope curve sheet and connector crossbeam.
The 6-5 general assembly
The heat-shrinkable T bush of suit in advance is pushed into terminal plug 401 roots, or according to the requirement of cable design drawing, with heat gun it is blown and contract; The connector shell assembly 402 of suit is pushed into terminal plug 401 places in advance again, and clamps with terminal plug 401, and the assembling finished product as shown in figure 12.
As seen, the earthing conductor that method of the present invention has existed when having solved coaxial cable and the attaching of the 2mmFB connector problem that easily opens circuit, the PE insulation that has also solved miniature diameter coaxial cable simultaneously can damage the problem of the crossbeam of the envelope curve sheet of splicing ear and terminal plug, and is positioned at the problem that the inner wire of connector both sides easily opens circuit slightly in the coaxial cable.
Claims (7)
1, a kind of on coaxial cable the processing method of assembly connector, it is characterized in that, may further comprise the steps:
A, get one section coaxial cable, peel off its crust, until exposing its inner earthing conductor and, and on cable cover(ing), overlap heat-shrinkable T bush with the inner wire of teflon insulation;
B, the cable after the peeling is handled, cover wiring skin on each root earthing conductor is to increase its external diameter;
C, be sleeved on the casing assembly of connector on the coaxial cable in advance;
D, with the earthing conductor of the wired skin of described cover be crimped on the inner wire of teflon insulation in the corresponding splicing ear in the terminal plug of connector;
E, adjust the heat-shrinkable T bush of suit in advance, and will be sleeved on described casing assembly on the cable in advance and the described terminal plug after the crimping clamps, finish assembling process.
2, method according to claim 1 is characterized in that, the connector among the described step c is the 2mmFB connector.
3, method according to claim 2 is characterized in that, in described step b, the line skin that is overlapped on the described earthing conductor is that specification is the line skin of the service cable of 28AWG-30AWG.
4, method according to claim 2, it is characterized in that, in described step a, for slight coaxial cable, the single core of each root core braiding in peelling off cable, expose its foamed insulation after, adopt arc wire stripping mode to peel off the foamed insulation of each root core, expose the inner wire with teflon insulation, the foamed insulation that core kept that is positioned at during the longest and crimping of the foamed insulation that core kept that is positioned at the terminal plug both sides when making crimping in the middle of the terminal plug is the shortest.
5, method according to claim 4 is characterized in that, in described step a, the foamed insulation that core kept in the middle of described being positioned at is 8-12mm to the length of its single core braiding root; The described foamed insulation that core kept that is positioned at both sides will grow more than the 5mm than the length that core kept in the middle of being positioned to the distance that its single core weaves root.
6, method according to claim 2, it is characterized in that, in described step b, for miniature diameter coaxial cable, also the junction with PE insulation and teflon insulation is the center, one section φ 1mm of suit heat-shrinkable T bush, and the part of described φ 1mm heat-shrinkable T bush is enclosed within the PE insulation, another part is enclosed within on the teflon insulation, with heat gun it is blown then and contracts.
7, method according to claim 6, it is characterized in that, in described steps d, for miniature diameter coaxial cable, during crimping, to be crimped on the front and back knife-edge part of described splicing ear with the inner wire of polytetrafluoroethylene, and with described suit with the polytetrafluoroethylene inner wire one section of described φ 1mm heat-shrinkable T bush be pressed in the envelope curve sheet of described splicing ear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02122923 CN1241304C (en) | 2002-06-06 | 2002-06-06 | Processing method for mounting connector on coaxial cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02122923 CN1241304C (en) | 2002-06-06 | 2002-06-06 | Processing method for mounting connector on coaxial cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1464594A true CN1464594A (en) | 2003-12-31 |
| CN1241304C CN1241304C (en) | 2006-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02122923 Expired - Fee Related CN1241304C (en) | 2002-06-06 | 2002-06-06 | Processing method for mounting connector on coaxial cable |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104600533A (en) * | 2013-10-31 | 2015-05-06 | 北京实验工厂 | Internal wire margin control method of electric connector |
| CN105098557A (en) * | 2015-08-28 | 2015-11-25 | 国网山东莒南县供电公司 | 2M cable head manufacturing process |
| CN107768851A (en) * | 2016-08-15 | 2018-03-06 | 东莞莫仕连接器有限公司 | Wire and cable connector |
| CN109830332A (en) * | 2019-02-21 | 2019-05-31 | 苏州冠韵威电子技术有限公司 | Middle high frequency coaxial cable and preparation method thereof |
| US20200043636A1 (en) * | 2009-12-09 | 2020-02-06 | Holland Electronics, Llc | Guarded coaxial cable assembly |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102025044B (en) * | 2009-09-15 | 2014-04-02 | 上海和旭电子科技有限公司 | Overloaded cable component and machining process thereof |
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2002
- 2002-06-06 CN CN 02122923 patent/CN1241304C/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20200043636A1 (en) * | 2009-12-09 | 2020-02-06 | Holland Electronics, Llc | Guarded coaxial cable assembly |
| US11810690B2 (en) * | 2009-12-09 | 2023-11-07 | Holland Electronics, Llc | Guarded coaxial cable assembly |
| CN104600533A (en) * | 2013-10-31 | 2015-05-06 | 北京实验工厂 | Internal wire margin control method of electric connector |
| CN104600533B (en) * | 2013-10-31 | 2016-08-31 | 北京实验工厂 | A kind of electrical connector interior wire surplus control method |
| CN105098557A (en) * | 2015-08-28 | 2015-11-25 | 国网山东莒南县供电公司 | 2M cable head manufacturing process |
| CN105098557B (en) * | 2015-08-28 | 2017-11-10 | 国网山东省电力公司莒南县供电公司 | 2M manufacturing cable head techniques |
| CN107768851A (en) * | 2016-08-15 | 2018-03-06 | 东莞莫仕连接器有限公司 | Wire and cable connector |
| CN107768851B (en) * | 2016-08-15 | 2019-11-05 | 东莞莫仕连接器有限公司 | Wire and cable connector |
| CN109830332A (en) * | 2019-02-21 | 2019-05-31 | 苏州冠韵威电子技术有限公司 | Middle high frequency coaxial cable and preparation method thereof |
| CN109830332B (en) * | 2019-02-21 | 2020-05-26 | 苏州冠韵威电子技术有限公司 | Intermediate frequency coaxial cable and preparation method thereof |
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|---|---|
| CN1241304C (en) | 2006-02-08 |
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Granted publication date: 20060208 Termination date: 20100606 |