Flexible electrical cable
A highly flexible, screened electrical line for high-frequency data transmission in swiveling display screens provides that the twisted and/or bundled single wires of the line are held by an aluminized nonwoven, and the nonwoven covering is finally surrounded by an outer sheath of silicone rubber.
1. A flexible, screened electrical line for high-frequency data transmission in swiveling display screens, comprising:
at least two conductors for current supply and/or at least two conductors for data transmission;
a wire braid surrounding and holding together the at least two conductors for current supply and/or the at least two conductors for data transmission with or without a non-woven fabric beneath the braid;
a wrapping of an electrically conducting metallized non-woven fabric covering the wire braid for optimizing shielding of the at least two conductors for current supply and/or the at least two conductors for data transmission; and
an outer sheath of silicone rubber surrounding said metallized non-woven fabric.
2. The electrical line according the claim 1 , wherein the at least two conductors for data transmission are at least two pairs each including two twisted signal wires.
3. The electrical line according to claim 2 , further comprising:
a wrapping including a stretched and sintered tape or a film of a non-melt-processable fluoropolymer wrapping the at least two conductors for data transmission for insulation of the at least two conductors for data transmission.
4. The electrical line according to claim 3 , wherein the non-melt-processable fluoropolymer is a polytetrafluoroethylene.
5. The electrical line according to claim 3 , further comprising:
a melt-processable fluoropolymer wrapping covering the at least two conductors for current supply.
6. The electrical line according to claim 3 , wherein a ration of wall thicknesses of the wrapping of the at least two conductors for data transmission to a covering covering the wrapping is about 3:1.
7. The electrical line according to claim 2 , wherein each individual pair of conductors for data transmission is twisted with a different lay length.
8. The electrical line according to claim 1 , wherein the at least two conductors for current supply are stranded together with the at least two conductors for data transmission.
9. The electrical line according to claim 8 , further comprising: a melt-processable fluoropolymer insulating cover covering the at least two conductors for current supply.
10. The electrical line according to claim 1 , further comprising: a central filling strand around which the at least two conductors for current supply and/or the at least two conductors for data transmission are twisted, the central filling strand including a stretched and sintered shaped strand of polytetrafluoroethylene.
11. The electrical line according to claim 1 , wherein the outer sheath is a hot-vulcanized (HTV) silicone rubber.
12. The electrical line according to claim 1 , wherein the outer sheath is an LSR (liquid silicone rubber) rubber.
13. The electrical line according to claim 1 , wherein the screened electrical line in a dynamic state has a flexibility at temperatures of −50° C. to +180° C. at a transmission frequency >800 MHz.
14. A method of using the electrical line according to claim 1 , comprising: transmitting a low-voltage/high-speed data signal (LVDS) over the conductors.
15. The electrical line according to claim 1 , wherein the conducting nonwoven fabric is impregnated with conducting materials.
16. The electrical line according to claim 1 , wherein the conducting nonwoven fabric of the wrapping is a nonwoven fabric coated with a metal on one or both sides.
17. The electrical line according to claim 16 , wherein the metal for coating the nonwoven fabric is aluminum or silver.
18. The electrical line according to claim 16 , wherein the nonwoven fabric is coated with aluminum or silver by vapor deposition.
19. A flexible, screened electrical line for high-frequency data transmission in swiveling display screens, comprising:
at least two conductors for current supply and/or at least two conductors for data transmission;
a wire braid surrounding and holding together the at least two conductors for current supply and/or the at least two conductors for data transmission with or without a non-woven fabric beneath the braid;
a wrapping of an electrically conducting metallized non-woven fabric covering the wire braid for optimizing shielding of the at least two conductors for current supply and/or the at least two conductors for data transmission;
an outer sheath of silicone rubber surrounding said metallized non-woven fabric; and
a central filling strand around which the at least two conductors for current supply and/or the at least two conductors for data transmission are twisted, the central filling strand including a stretched and sintered shaped strand of polytetrafluoroethylene,
wherein the stretched and sintered shaped strand includes a polytetrafluoroethylene tape twisted into a strand.