Les paso la patente de los cables Groneberg, para el que entienda alemás y quiera ver detalles.
Puedes ver la en la siguiente página:
Haz click en "number search" y luego mete el número DE4336230 en el campo "publication number", después haz click en "search". Te aparecerán unos datos generales. Haz click en el título y te aparecerán el abstract, la descripción y eso. Solo el abstract está en inglés.
The invention concerns a distortion-poor transferring alternating current cable also in a casing arranged at least two utilizable lines, which consist in each case of at least two hooked up utilizable leaders, whereby the isolated utilizable leaders i the cable are so distributed that around the cable longitudinal axis heraum to different utilizable lines belonging utilizable leader is each other neighbouring.
It is for some time in particular well-known for the HiFi technology that quality improvements are attainable during the signal transmission by the fact that the signal lines are at least trained in pairs in each case, whereby the leaders at the cable ends, belonging to the respective signal line, are hooked up.
A conventional two-vein cable therefore, whereby the pair educating leader concerning the cable longitudinal axis lie diagonally to each other, thus around the cable longitudinal axis directors/conductors of different lines each other neighbouring are trained as at least vieradriges cable. It was shown that with a such arrangement substantial quality improvements are possible. These result even also from the use of the technology mentioned for mains cables. This cable "well-known cables reference under the brand" Quattro exhibit usually an outside screen in form of a shielding network within the sheath, in order to prevent irradiations into the cable and cross modulations between several cables.
In the DE 29 07 211 A1 a loudspeaker cable is described, for which just like for the "quattro" cable described before the task is the basis to lower the impedance of the cable in the range of high frequencies and to improve thus the frequency response of the cable. The improvement of this well-known cable is to be attributed to the fact that the well-known skin effect is minimized by allocation of the total leader on several single leaders. Mobile cables for power installation, whose core from metallic or isolating material can be, describe De-as the 11 14 554.
The specialist thus of the thought to use an electrical conductor as central shielding element in order to affect the director/conductor of surrounding magnetic fields, rather led away. Beyond that it concerns with the cable described there a high voltage cable, with which the signal distortion problems described above do not play a role.
The DE 20 51 620 B2 shows a cable, with which a small characteristic impedance was design objective, however reveals it no central, electrically leading shielding element. In the De-OS 20 33 675 a remote controlling cable for a guided weapon, for example an armor-piercing guidance projectile, is described. Such a remote controlling cable is rolled up on a hasp. If the guidance projectile with high speed leaves the muzzle pipe of the weapon, high traction powers must be transferred over the cable, in order to overcome the mass-moment of inertia of the hasp and accelerate these. Accordingly the there cable has the substantial purpose to take up those on the cable during its completion influencing mechanical loads. It does not concern with the well-known central wire therefore a shielding element. The goal of the available invention consists of still improving the quality reached with the well-known cables.
On the basis of this objective a distortion-poor transferring alternating current cable of the initially mentioned kind is characterized according to invention by the fact that in the cable longitudinal axis a central electrically leading shielding element is arranged.
According to invention planned the central, leading shielding element and/or the leader can be put thereby on a reference potential or completely unangeschlossen to remain, whereby it adjusts itself to a center potential of the transferred alternating current. The invention is based on the realization that the magnetic field training around the individual ladder can affect itself also with the initially mentioned improved cables to the cable inside disturbing.
The energized lines of an alternating current cable become in by the lines, which flowed through power source and the consumer closed electric circuit against-intimately from river, whereby appropriate magnetic fields develop, which exhibit magnetic field portions in the same direction between that against-intimately durchflossenen cables toward the neighbouring cable. Thus it comes between the neighbouring cables to a repulsive strength, those with the amount of the current flow and remove-removing those developing magnetic fields causes on the one hand an induced interference current in the neighbouring cables, on the other hand one they, although slight, cause changes of position of the leaders in the well-known cables, whereby the capacity between the leaders becomes veraen<DP N=3>dert, so that in HiFi plants audible distortions develop. Such signal distortions were so far not attributed to the used cables.
A part of the magnetic fields developing around the ladder is taken up by a any existing outside screen of the cable and derived. According to invention planned the central ladder provides for the admission and derivative of a further substantial part of the developing magnetic fields, so that between the leaders developing magnetic field strengths as well as magnetically induced interference currents are decreased clearly.
In a preferential execution form of the cable according to invention the central leader and the cable casing, if necessary with the screen, are then it dimensions that the utilizable leaders rest firmly against the central leader. Thus the central leader has not only the function to take up and distribute the developing magnetic fields, but beyond that still another mechanically stabilizing function, by which the motion possibility of the utilizable leaders is substantially reduced. Thus between the utilizable leaders a constant distance is kept also if the cable is bent. The central leader can, as the utilizable leaders, of twisted strand wire to preferably consist. As also with conventional cables neighbouring utilizable leaders are preferably against-intimately twisted and preferably beyond that around the length of the cable around the central leader stranded arranged.
In a preferential execution form the central leader consists of solid material, in particular solid metal. Beispie for possible materials are copper, aluminum and also carbon fibers. In each case the central leader without its own isolation can be trained.
The mechanical adjustment of the utilizable leaders by the central leader is strengthened still by the fact that the extent outline of the central leader with radial projections/leads rises up in after radially outside tapering areas, which by the Aneinanderliegen benachba round utilizable leader is educated. A further perfecting succeeds, if the outer contour of the central leader exhibits adapted recesses to the extent outline of the utilizable leaders, whereby preferably after radially outside tapering area by the central leader essentially fill out itself.
The cable according to invention can be used with advantage in such a way that the central leader at both ends of the cable is intended to a reference potential for the connection. This type of use is in particular favourable for mains cables. In particular f audio cable or digital cable is appropriate it, if the central leader is intended to a reference potential only at an end of the cable for the connection. During the transmission of audio signals between a CD player, tape recorder, receiver etc. and an amplifier is it appropriately, the central leader, like also a any outside screen to connect with the mass potential of the amplifier. The cable according to invention can be used also without any connection of the central leader, for example as loudspeaker cables.
In all use categories mentioned it will be appropriate, if a any existing outside screen is attached in the same way as the central leader. Remark examples of the invention are to be described in the following on the basis the design more near.
Fig. 1 a cross section by a cable with two information signal lines and four utilizable leaders as well as with a central leader,
Fig. 2 a cross section by a further remark example of a cable with four utilizable leaders and a central leader trained squarely in the cross section as well as an outside screen,
Fig. 3 a cross section by a cable with eight utilizable leaders and a central leader adapted in the form as well as with an outside screen, Fig. 4 a cross section by a cable with four utilizable leaders and a central leader adapted in the form as well as with an outside screen.
Fig. 1 shows a remark example of the cable, in whose casing 1 an area square in the cross section exists
2 for the admission of four utilizable leaders
3. The utilizable leaders 3 are educated from a core
4 formed by twisted strand wires and a usual isolation
5. The strand wires are twisted in usual way, whereby the direction of twisting is characterized by arrows
6. From the drawn in arrows 6 it becomes clear that neighbouring utilizable leaders 3 are against-intimately twisted. Essentially together the lying close utilizable leaders 3 train a middle area
7, which tapered
8 after radially outside star-like and exhibits in points running out ranges. Centrically in the area 7 a central leader 9 is arranged, that is essentially so dimensioned that the utilizable leaders 3 rest against him. The leader 9 can likewise consist of twisted strand wires, preferably however of a solid wire.
The central leader 9 does not exhibit own isolation. By the request of the utilizable leaders 3 together as well as by the central leader 9 formed the diagonal support for all utilizable leaders 3 and by a suitable dimensioning of the area 2 a good adjustment of the utilizable leaders 3 is reached relatively to each other.
Beside the mechanically stabilizing effect the central leader 9 has the substantial task to decrease reciprocal effects of the magnetic fields trained around the utilizable leaders 3 around by the fact that the magnetic fields are taken up and derived from the central leader 9.
The cross section representation of the Fig. 1 does not show 3 thus in a screw course around the central leader 9 that the utilizable leaders are stranded arranged around the central leader 9 around over the length cable, each individual utilizable leaders is put. Fig. remark variation in type of the cable shows 2, with which the casing exhibits 1 min an essentially circular interior.
At the inner wall of the casing 1 min an outside screen 10 is arranged, which is final inwardly by a schlauchfoermige Stabilisation 11, for example in form of a foil. In the interior 2 again four utilizable leaders 3 are arranged min, that fit together with their isolations 5.
In the area 7 is a central leader 9 min, that is squarely trained in the cross section and rises up themselves with its corners 12 into the tapering ranges 8 of the area 7 between the utilizable leaders. In this way the central leader 9 min causes a certain spatial adjustment of the utilizable leaders 3, that compensate the missing spatial adjustment of the utilizable leaders 3 in this case by the form of the interior 2 min.
With the remark example represented in Fig. 3 the cable exhibits again a casing 1 min with an interior 2 min circular in the cross section. Intended is also here the utilizable leaders 3 cylindrically surrounding screen after 10 with a stabilization 11 radially inside. The utilizable leaders of 3, in the explained remark example eight utilizable leaders 3, lie about due to the dimensioning of the interior 2 min and the dimensioning of a central leader 9 min min closely together at and on a circular path around the central leader 9 min min.
The each other neighbouring utilizable leaders 3 are - as the arrows clarify 6 - as against-intimately twisted wire braids trained. The central leader 9 min min exhibits itself a star shaped outer contour also to the outer contour of the utilizable leaders 3 adapted recesses 13 and into the tapering ranges 8 of the area of 7 3 projections/leads 14 rising up between the utilizable leaders.
In this way the central leader 9 min min essentially fills out the area 7 between the utilizable leaders 3. Since the utilizable leaders 3 also in this case preferably schraubenlinienfoermig stranded around the central leader 9 min min are arranged around, also the recesses must form 13 14 slots schraubenlinienfoermige with the projections/leads, into which the utilizable leaders 3 are inserted.
The preferential training of the cable according to invention plans the central screen by the central leader 9, 9 min, 9 min min and at the same time an outside screen 10, which surround the utilizable leaders 3 cylindrically in usual way in form of a wire mesh. Outside screen of 10 and central leaders 9, 9 min, 9 min min are preferably attached thereby in the same way and/or are not attached, as this was described above. Fig. a remark example clarifies 4 in accordance with Fig. 2, with which the central leader 9 min min min is provided with four projections/leads 14, which follow on the outer contour of the utilizable leaders 3 adapted recesses 13, whereby also in this case the area 7 between the utilizable leaders 3 into the tapering ranges 8 is filled out by the central leader 9 min min min.
Diseñado y fabricado en Alemania con patente registrada, un cable de amplias virtudes audiofilas para toda aplicación con una notable diferencia sobre productos del mismo o mayor rango de precio.
>>> Groneberg HFT @ México
>>> Groneberg HFT @ México
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