| 摘要 |
PROBLEM TO BE SOLVED: To reduce the weight and cost of a wheel used for an electric gate door or the like while ensuring its travel. SOLUTION: The wheel is composed of a collar part 10 formed of nylon 6, a wheel part 20 formed of SBR, and a metal disc part 30 formed of SUS304, and fixed to be integrated by screws 40. The collar part 10 is formed with an axial hole 12 of approximately D-shaped cross section, and four screw holes 14. A peripheral edge part is formed as a tapered part 15 obliquely formed to be thin toward the peripheral edge. The wheel part 20 is formed with a through hole 21 for a bearing in the center, and four through holes 22 for screws around the through hole 21 for the bearing. The wheel part 20 is formed with a large number of grooves 23 in a right-angled direction to the travel direction of the wheel. The metal disc part 30 is formed with an axial hole 31 of approximately D-shaped cross section in the center. COPYRIGHT: (C)2005,JPO&NCIPI
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