CN1114459A - Special electric wire with linear distortion - Google Patents
Special electric wire with linear distortion Download PDFInfo
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- CN1114459A CN1114459A CN 94107664 CN94107664A CN1114459A CN 1114459 A CN1114459 A CN 1114459A CN 94107664 CN94107664 CN 94107664 CN 94107664 A CN94107664 A CN 94107664A CN 1114459 A CN1114459 A CN 1114459A
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- heart yearn
- core
- electric wire
- spiral
- center
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Abstract
The electric cable is composed of prism and cylindric core wire, spiral core wire and elastic insulating layer from centre to surface, and features that said wires and insulating layer can synchronously extend when it is impacted by external force, so keeping good conductivity.
Description
The present invention relates to the insulated hull electric wire of a kind of transmission of electric energy and the signal of telecommunication, especially a kind of energy, can respond external mechanical shock fast and extends the buffering impulse force promptly at elongation of the force of tangential direction of electric wire place curve or the special purpose electric wire that shrinks by linear distortion.
At present, known insulated hull electric wire is to be formed by insulation sheath clad metal core, removes enamelled wire and makes core by the sub-thread heart yearn, and the core of insulated hull electric wire is made of 5 to 20 strands of heart yearns, and each strand heart yearn does not disconnect.The metal core two ends of electric wire are kept being electrically connected with output and input respectively, and under the situation that core is constantly opened, circuit is connected on this section electric wire effective.Tape insulation skin electric wire is widely used in the power delivery in various vehicles, boats and ships, the airborne vehicle, and the electrical connection between remote power delivery and inner each parts of electrical equipment, but, connection electric wire between a lot of electrical equipment often moves, or be vulnerable to unexpected mechanical shock, general electric wire core ruptures when being hit, cause and open circuit and accident such as the electric leakage of getting an electric shock, militarily this shortcoming is more obvious, below in conjunction with the design feature of existing electric wire, further specify the existing unreliability of electric wire under mechanical shock.Known insulated hull electric wire, under the effect of pulling force, the percentage elongation of core is between 2/10000ths to 9/10000ths, under instantaneous tension, elongation 5/10000ths, core disconnects, because stress converges under the instantaneous tension, so, core is located to disconnect on one point, cause opening circuit,, can make corresponding computer element or single-chip microcomputer element produce misoperation if this opening circuit occurs in the data.Known wire insulation crust, be to be the plastics of main component with XS-1 or XS-2 plastics, and heat-resisting, high temperature resistant, the radioresistance special purpose electric wire promoted, insulated hull is easy-to-draw to be stretched, after core disconnects, insulated hull is intact in the certain limit, is not easy to find the trip point position, for the circuit maintenance is made troubles.Under the air pressure shock wave effect of high speed object strikes and blast generation, heart yearn can disconnect many places, produces and opens circuit or electric shock accidents.When for example vehicle, boats and ships, airborne vehicle and man-made island were subjected to kinetic energy weapon or explosive attack, the wall of supporting electric wire deformed, and extruding or stretching electric wire core is disconnected, and insulated hull are not impaired.The insulated hull electric wire is subjected to the damaging impact from all directions easily, electric wire will experience a large plastometric set process before local damage, for not extending electric wire, this impulse force is a force majeure, special under the effect of peeling off of shock wave, this large plastometric set process finishes to break core.The characteristics of modern national defense and modern war show that in each stage of attacking and defending, electronic equipment is the main target of enemy firepower, existing electric wire is under fire the time, easily make circuit breaker or produce misoperation, make under the intact situation of corresponding techniques equipment entire equipment thrashing.
Aspect civilian, existing insulated hull electric wire is widely used in engineering, the power delivery on mining and the various kinds of vehicles, and under the percussion of unexpected sensing core, core is struck off to be caused opening circuit, and accidents such as electric shock are unfavorable for the normal operation of electrical equipment.
The purpose of this invention is to provide a kind of tape insulation skin electric wire, this electric wire has the linear distortion ability, can respond external impulse force fast and elongation equidistantly, the destruction of available buffer impulse force, and the electric energy transmitting of remaining valid.
The objective of the invention is to realize by this way:
Discontinuous media is become the suitable continuous conductor of electricity behavior, increase the tensile strength of insulated hull, realize conditioning each other of elongation.Detailed process is:
Heart yearn ruptured in advance handle and change surface configuration, per share heart yearn all is cut off, and equates with each segment length on one heart yearn, and each strand heart yearn is parallel superimposed or reverse-5 to 5 degree, different heart yearn breakpoints is not on same cross section, and the distance between the cross section at breakpoint place equates.Heart yearn is that 7 to 19 money paid for shares belong to the good conductor material and make, middle each strand is the prismatic bodily form, appearance is a smooth flat, peripheral each strand wicking surface can abut against with middle each strand wicking surface, keeps electrical connection each other, and each strand core is made the prismatic bodily form, between rib and the rib space is arranged, both can reduce requirement on machining accuracy, again can be at gap enriched in metals break flour and other impurity, the powder that is electrically connected that is unfavorable for that electric wire is in use produced concentrates on the gap.These prismatic bodily form cores are superimposed, form the center core, and the center line core outer surface is the cylinder bodily form, and promptly the cross section of the outer heart yearn of center core has one section to be circular arc, the discontinuous point length formula of each strand heart yearn of center core and being described as follows:
With one middle heart yearn is benchmark, and getting the 0th discontinuous point is starting point, each discontinuous point be N (N=1,2,3...), alphabetical L is a certain-length, the discontinuous point formula of middle one heart yearn is:
S＝2.0·N·L
(illustrate: S represents N discontinuous point to the distance of starting point, and N discontinuous point of this The Representation Equation is 2.0 and the amassing of L and N to the distance of starting point.)
The rib number of heart yearn in the middle of the peripheral compact arranged heart yearn number of share of stock of middle one heart yearn equals if K is the number of share of stock of whole heart yearns of center core, gets that to decide K be constant, and in outer each strand heart yearn of then middle core, the discontinuous point and the length formula of I thigh heart yearn are:
S(I)＝N·L＋L·I/K
(illustrate: S (I) is the distance of N discontinuous point of I thigh heart yearn to starting point, and concerning I thigh heart yearn, the starting point place does not count discontinuous point, is the 0th discontinuous point from the nearest discontinuous point of starting point)
By the discontinuous point formula:
S＝2.0·N·L
The center line cored structure of S (I)=NL+IL/K decision is appointed and is got length L, all can obtain the electric wire of certain specification and purposes, can carry out standardized designs and formulation standard with reference to this formula.The effective aspect ratio parameter of this electric wire is 1/K, and the every segment length of middle heart yearn is 2 times of other heart yearn length.
Each strand heart yearn of center core is a smooth surface at the discontinuous point place, and closely contact of surface can be slided along electric wire place rectilinear direction between the core, and electric wire elongates or shortens during slip.
Core outside, tubular center, one deck spiral heart yearn is arranged, and formation is to the constraint of center core and condition each other the elongation of control centre's core in elongation process, and increase pressure between each strand of center line in-core heart yearn, the electrical connection that each strand heart yearn of center core is remained valid.Specific design is: the outside of center core, close by the circle silk that the metal good conductor wire rod of satisfactory mechanical property is made around one deck, constitute the spiral heart yearn, the spiral heart yearn is parallel close around forming by 3 to 8 strands of round wires, each strand wire also disconnects, every section wire rings is around 3 circles, and each discontinuous point is interspersed in core one outside, and promptly each discontinuous point is not on same bus; The two ends of discontinuous point are smooth curved surfaces, can slide at the center line wicking surface, and such helix core wire loop constitutes the core of electric wire around the center core.Outer heart yearn centering heart yearn core forms inside pressure, makes the good electrical connection of maintenance between each strand of the core heart yearn of center.
The spiral heart yearn also can be formed by the coiling of stretching resistance fiber, and 10 to 100 long fibre wire rods are parallel outside the core of center, the every all section of pressing disconnection of fiber wire rod, and every section fibre wire rod is around 5 to 10 weeks of center core, and distance equates between the cross section at each discontinuous point place.5 to 100 fiber wire rods like this constitute fiber spiral heart yearn.
Do the time spent when the electric wire air pressure shock wave that produces that exploded, shock wave energy is converted into the merit that electric wire deformation is done, and still can switch on after the electric wire distortion.When being subjected to mechanical shock directly to do the time spent, electric wire distorts, and increases the power effect time and reduces impulse force, or because of elongation departs from line of action of force, avoid impacting.
Insulated hull is made by elastomer plastic, is coated on outside the core, and each several part thickness equates.Close in the tight corner of insulated hull inner surface and core, is filled in the outer seam of core, embeds mutually.In the process of coated insulation skin, make heart yearn be warming up to 90-110 ℃ in advance, after elastomer plastic coated and goes up, outer surface is cooling earlier, causes elastomer plastic inwardly to expand, and infiltrates in the seam of spiral heart yearn.At last electric wire is cooled to 0～40 ℃ of normal temperature.
When such electric wire was hit, the center core distorted under external force, and it is big that spiral core pitch becomes, and inwardly increases pressure, made to keep between each strand heart yearn in the core of center being electrically connected closely.Because close in insulated hull inner surface and core outer surface corner, there is indenture on the spiral heart yearn surface of core outer surface, so insulated hull and core can keep sliding synchronously, extends with identical percentage elongation, when the part of insulated hull is stretched to can not stretch the time, another part can be stretched; On any one section, elongation is limited, because outer heart yearn and center core form mutual restriction, electric wire is unlikely only locates on one point to be stretched.In other words, break electric wire, must each point all elongate can not elongate till.Because spiral heart yearn discontinuous point two ends are smooth, can be at the insulated hull inner surface by laterally sliding, so electric wire when being stretched, in the process that spiral heart yearn internal diameter reduces, the part that reduces is compensated by the slip of spiral heart yearn, can not cause the distortion of electric wire.After electric wire is broken, at first be elongated, not only make and check that fault is easy, also making when repairing circuit has one section extra length available.This insulated hull electric wire after insulated hull is burnt, under the non-built on stilts state, but the circuit conducting.
Because metal spiral heart yearn centering heart core has restrictive function, when being lower than fusing point, temperature do not damage, so after insulated hull was burnt, the electric wire of band metal spiral heart yearn can make circuit turn-on.And spiral heart yearn and insulated hull that chemical fibre is made together burn.
The electric wire that use the present invention relates to, it is identical with the connection method of existing electric wire to connect core, and metal core and contact are kept being electrically connected getting final product.When connecting insulated hull insulated hull and contact kept necessary tensile strength be connected, for example direct and plug is moulded and is one or bonding.
Owing to adopt such scheme, can under extraneous intense impact, guarantee circuit turn-on, the buffering impulse force, also easy access and recovery after electric wire is broken, employed material all is a material of producing existing electric wire, is easy to produce.
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is the center core drawing in side sectional elevation of electric wire.
Fig. 2 is first embodiment structural map.
Fig. 3 is second embodiment structural map.
1. center cores among the figure; 2. spiral heart yearn; 3. insulated hull; 4. heart yearn; 5. fiber spiral heart yearn.
In Fig. 1, center core (1) is made of 7 strands of heart yearns, and wherein there is the slit at the rib place of each rib of heart yearn (4) and other heart yearn, is the plane between adjacent two strands of heart yearns, be in contact with one another, but longitudinal sliding motion.Each strand heart yearn (4) disconnects in the center core (1), and the discontinuous point formula is;
S＝2.0·N·L；S(I)＝N·L＋I·L/K
(wherein S is the distance of N discontinuous point of middle heart yearn to starting point, N counts for being interrupted, L is the length of every section heart yearn, get L=1 rice in following examples, S (I) is the length of I thigh heart yearn, I value from 1 to 7, K is the number of share of stock of the heart yearn in the center core (1), K=7 in following examples.
In the embodiment shown in Figure 2, center core (1) is made by flexible good conductor alloy silk, and the cross section as shown in Figure 1.Heart yearn (4) disconnects, and the edge of per share heart yearn closely contacts with other heart yearn, but longitudinal sliding motion.Outside tubular center core (1), 3 strands of round wire helically coilings become spiral heart yearn (2), 3 strands of round wires that constitute spiral heart yearn (2) disconnect by section, every section can be around center core (1) 3 circle, all discontinuous points are not on the same space straight line, and the pitch of spiral heart yearn (2) can become big with center core (1) elongation.Outside in spiral heart yearn (2) coats one deck plastic insulation skin (3), and insulated hull (3) closely contacts with spiral heart yearn (2).Owing on the spiral heart yearn (2) slit is arranged, so embeds mutually between spiral heart yearn (2) and the insulated hull (3), keep synchronization telescope.
The electric wire that uses first embodiment to relate to keeps spiral heart yearn (2) and center core (1) and contact are electrically connected, and makes insulated hull (3) and contact keep the bonding of necessary intensity, or moulds and be one.
When electric wire is subjected to external shock, momentum effect line and electric wire place curve have the angle of one 0 to 90 degree, final generation makes the effect of electric wire elongation, center core (1), spiral core (2) and insulated hull (3) be elongation synchronously, cushions external force jointly, adapts to the physical dimension change of external environment, simultaneously, spiral heart yearn (2) when elongation radius reduces, and strengthens inside pressure, makes that each strand heart yearn closely contacts in the center core (1).Under 1/7th the situation of clean elongation less than wire length, electric wire still can effectively be switched on.After insulated hull (3) is burnt, still can switch under the non-built on stilts state.
In second embodiment shown in Figure 3, outside the center core (1), by 10 to 100 parallel close coiled fiber spiral shell heart yearns of long fibre wire rod (5), each strand fiber wire rod disconnects by section in the fiber spiral heart yearn (5), and per share fiber wire rod can be around center core (1) 5 to 10 circles.Outside fiber spiral heart yearn (5), coat the insulated hull (3) that one deck elastomer plastic is made, insulated hull (3) inner surface closely contacts with fiber spiral heart yearn (5).Center core (1), fiber spiral heart yearn (5) and insulated hull (3) can keep synchronous elongation, i.e. elongation synchronously on same section.
The electric wire that uses second embodiment to relate to keeps center core (1) and contact is electrically connected, and insulated hull (3) and fiber spiral heart yearn (5) and contact held the bonding of necessary intensity or mould is one.
When electric wire is subjected to external shock and when extending, fiber spiral heart yearn (5) also is stretched, the helical radius reduces, and strengthens inside pressure, makes that each heart yearn connects tightr in the center core (1).
Claims (6)
1. an electric wire in insulated hull, coats core, and it is characterized in that: core is made of center core and spiral heart yearn, and insulated hull and spiral heart yearn embed mutually.
2. electric wire according to claim 1, it is characterized in that: the center core is to belong to the core that be arranged in parallel that conductor is made by 5 to 19 money paid for shares, closely contact of each strand heart yearn surface in the core of center, but longitudinal sliding motion, each strand heart yearn disconnects by section in the core of center, and the cross section distance at each discontinuous point place equates.
3. electric wire according to claim 1 is characterized in that: the crack is met at the rib place of each strand of center line in-core heart yearn, and center core outward appearance is the cylinder bodily form.
4. electric wire according to claim 1 is characterized in that: the wire that constitutes the spiral heart yearn disconnects by section, and pitch is variable big.
5. electric wire according to claim 1 is characterized in that: insulated hull inner surface and spiral heart yearn embed mutual restriction each other.
6. electric wire according to claim 1 is characterized in that: center core, spiral heart yearn and insulated hull can keep synchronous elongation, can increase inside pressure during the elongation of spiral heart yearn, make the contact of each strand of center line in-core heart yearn tightr.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94107664 CN1114459A (en) | 1994-06-30 | 1994-06-30 | Special electric wire with linear distortion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94107664 CN1114459A (en) | 1994-06-30 | 1994-06-30 | Special electric wire with linear distortion |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1114459A true CN1114459A (en) | 1996-01-03 |
Family
ID=5033162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94107664 Pending CN1114459A (en) | 1994-06-30 | 1994-06-30 | Special electric wire with linear distortion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1114459A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093869A (en) * | 2013-02-05 | 2013-05-08 | 杭州高特电子设备有限公司 | Wire capable of being protected by disconnecting |
| CN104376908A (en) * | 2014-11-07 | 2015-02-25 | 国网上海市电力公司 | Underground self-repairing power cable provided with easily broken nodes |
-
1994
- 1994-06-30 CN CN 94107664 patent/CN1114459A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103093869A (en) * | 2013-02-05 | 2013-05-08 | 杭州高特电子设备有限公司 | Wire capable of being protected by disconnecting |
| CN103093869B (en) * | 2013-02-05 | 2015-12-09 | 杭州高特电子设备有限公司 | The wire of protection can be disconnected |
| CN104376908A (en) * | 2014-11-07 | 2015-02-25 | 国网上海市电力公司 | Underground self-repairing power cable provided with easily broken nodes |
| CN104376908B (en) * | 2014-11-07 | 2016-08-24 | 国网上海市电力公司 | It is provided with the underground selfreparing electric power cable of easily broken node |
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| C06 | Publication | ||
| C10 | Entry into substantive examination | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |