| 摘要 |
PROBLEM TO BE SOLVED: To increase the heat radiation quantity from an electric wire bundle to the outside of a tube by inserting the electric bundle into the tube, and forming a twist section, where the electric wire bundle and the tube are twisted to be closely stuck together, on the tube. SOLUTION: A connecting terminal 1a is connected to the tip of an insulating sheath electric wire 1 having an insulating sheath such as vinyl chloride, and several insulating sheath electric wires 1 are bundled and inserted into a tube 2 made of a material excellent in heat resistance such as heat-resistant vinyl chloride. A twist section 22, where a bundle 11 of multiple insulating sheath electric wires 1 and the tube 2 are twisted to be closely stuck together, is formed on the tube 2. One end side 23 and the other side 24 of the twist section 22 are fixed to the electric wire bundle 11 by insulating tapes 25, 26 made of a vinyl chloride tape. The twist section 22 is formed on the tube 2 so that the electric wire bundle 11 and the tube 2 are closely stuck together, the air quantity of a heat insulating layer is decreased, and the heat radiation quantity to the outside of the tube 2 can be increased. |
