Composite material self-wrap shielding tube
A composite material self-wrap shielding tube includes: a plurality of carbon fiber bundles disposed extending in a longitudinal direction; a plurality of wire bundles alternately disposed with the carbon fiber bundles and composed of metal wires; and a plurality of weft yarns disposed extending in a direction perpendicular to the carbon fiber bundles and the wire bundles. The composite material self-wrap shielding tube is formed by winding, into a cylindrical shape, a braided member made by braiding the carbon fiber bundles, the wire bundles, and the weft yarns.
1 . A composite material self-wrap shielding tube, comprising:
a plurality of carbon fiber bundles disposed extending in a first direction;
a plurality of wire bundles extending in the first direction parallel to the carbon fiber bundles and alternately disposed therewith, and composed of metal wires; and
a plurality of weft yarns disposed extending in a second direction perpendicular to the first direction,
wherein the composite material self-wrap shielding tube is formed by winding, into a cylindrical shape, a braided member made by braiding the carbon fiber bundles, the wire bundles, and the weft yarns,
wherein, when the braided member is wound into a cylindrical shape, an overlapping portion is formed where ends of the braided member overlap in a circumferential direction of the cylindrically wound braided member,
wherein, the overlapping portion comprises a first overlapping portion formed at a first end and a second overlapping portion formed at a second end opposite the first end, and
wherein areas of the first overlapping portion and the second overlapping portion each are ⅛ to ⅓ of an area of the braided member in the second direction.
2 . The composite material self-wrap shielding tube of claim 1 , wherein a ratio of the number of the carbon fiber bundles to the number wire bundles disposed is 1:n (where n is a natural number of 8 or less).
3 . The composite material self-wrap shielding tube of claim 1 , wherein a total area of the wire bundle is 1 to 8 times a total area of the carbon fiber bundle.
4 . The composite material self-wrap shielding tube of claim 1 , wherein the carbon fiber bundle is composed of 3 k strands, 6 k strands, or 12 k strands of carbon fiber yarn.
5 . The composite material self-wrap shielding tube of claim 4 , wherein the carbon fiber yarn configuring the carbon fiber bundle is coated with polyamide.
6 . The composite material self-wrap shielding tube of claim 1 , wherein a metal wire configuring the wire bundle is made of CCA (Copper Clad Aluminum).
7 . The composite material self-wrap shielding tube of claim 6 , wherein the metal wire configuring the wire bundle is formed of a mixed material of silicon (Si), iron (Fe), copper (Cu), manganese (Mn), magnesium (Mg), chromium (Cr), and zinc (Zn) with aluminum (Al).
8 . The composite material self-wrap shielding tube of claim 1 , wherein the composite material self-wrap shielding tube has a shielding ratio (dB) of 40 dB or more under a signal condition of 100 MHz.
9 . The composite material self-wrap shielding tube of claim 1 , wherein:
a ratio of the number of the carbon fiber bundles to the number of wire bundles disposed is 1:n (where n is a natural number of 32 or less); and
the carbon fiber bundle is configured of 3 k strands of carbon fiber yarn.
10 . The composite material self-wrap shielding tube of claim 1 , wherein:
a ratio of the number of the carbon fiber bundles to the number of wire bundles disposed is 1:n (where n is a natural number of 16 or less); and
the carbon fiber bundle is configured of 6 k strands of carbon fiber yarn.
11 . The composite material self-wrap shielding tube of claim 1 , wherein:
a ratio of the number of the carbon fiber bundles to the number of wire bundles disposed is 1:n (where n is a natural number of 8 or less); and
the carbon fiber bundle is configured of 12 k strands of carbon fiber yarn.
12 . The composite material self-wrap shielding tube of claim 1 , wherein, in the first overlapping portion and the second overlapping portion, a total area of the wire bundle is ⅓ to ⅘ of a total area of the carbon fiber bundle.
13 . The composite material self-wrap shielding tube of claim 1 , wherein the braided member comprises a non-overlapping portion disposed between the first overlapping portion and the second overlapping portion,
wherein:
a ratio of the number of the carbon fiber bundles to the number of wire bundles disposed in the non-overlapping portion is 1:n (where n is a natural number of 8 or less); and
when the carbon fiber bundle and the wire bundle in the non-overlapping portion are repeatedly disposed m times at a ratio of 1:n, a ratio of the number of the carbon fiber bundles to the number of wire bundles disposed in the first overlapping portion and the second overlapping portion is (n+2):n, and the first overlapping portion and the second overlapping portion is disposed by repeating the carbon fiber bundle and the wire bundle m/2 times at a ratio of (n+2):n.
14 . The composite material self-wrap shielding tube of claim 1 , wherein the braided member comprises a non-overlapping portion disposed between the first overlapping portion and the second overlapping portion,
wherein:
a ratio of the number of the carbon fiber bundles to the number of wire bundles disposed in the non-overlapping portion is 1:n (where n is a natural number of 8 or less);
a ratio of the number of the carbon fiber bundles to the number of wire bundles disposed in the first overlapping portion is 1:n (where n is a natural number of 8 or less); and
a ratio of the number of the carbon fiber bundles to the number of wire bundles disposed in the second overlapping portion is 1:n (where n is a natural number of 8 or less).
15 . A cable wrapped by the composite material self-wrap shielding tube according to claim 1 .