| 摘要 |
PROBLEM TO BE SOLVED: To provide a caster which can be easily assembled, with less parts. SOLUTION: A caster has a plastic main body 1 with an upwardly protruding rotational shaft 2 and a downwardly extending wall body 4. The wall body 4 has a circular notched groove 5 with a downward opening 6 which has a width less than a diameter of the circular notched groove 5. A wheel 10 has double plastic wheel members 11, 12 fixed to each other through a plastic rotational shaft 13 having a diameter which is less than that of the circular notched groove 5 and larger than the width of the opening 6. The wheel 10 is rotationally held on the main body 1 with the rotational shaft 13 pressure-fitted and passed through the circular notched groove 5.
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