| 摘要 |
PURPOSE:To obtain a caster provided with an installation base where the number of parts is small and handle operation is light by setting an installation base in a cylindrical frame which supports the axis of a wheel for shifting and is supported freely in rotation by a vertical shaft by screwing a cylindrical handle member around its external thread part. CONSTITUTION:A frame 31, where the axes of a pair of wheels 37 and 38 for shifting are supported through an axle 36 by an axle supporting part jutting out sideward, is set freely in rotation around a shaft 30 where a mounting base 35, which is to be fixed to the foot or the bottom of equipment, is calked and fixed. An installation base 32, comprising an elevation adjusting part 32c, where an external thread part 32d is formed at the periphery of the upper part and whose horizontal section is horseshoe shape, and a grounding face contact part 32d, is set to the cylindrical coupling part 31a of this frame 31. Moreover, a handle member 34, where a thrust washer 33 and holding parts 34c at 90 deg. intervals are provided from above, is mounted on the shaft 30, and an internal thread part 34a formed at the inside periphery of cylindrical part 34a of the handle member 34 is screwed around an external thread part 32d. |
