| 摘要 |
PURPOSE: A caster with a supporting shaft made of acetal is provided to improve the use convenience and lengthen the life by removing need for additionally applying grease or other oil. CONSTITUTION: A caster (A) with a supporting shaft made of acetal includes a caster body (10) and a caster wheel (20). The caster body includes a vertical supporting shaft hole (11) into which a vertical supporting shaft (30) is inserted; and a horizontal supporting shaft hole (12) into which a horizontal supporting shaft (40) is inserted. The caster wheel is fixed to the horizontal supporting shaft of the caster body. The vertical supporting shaft includes a bearing fixing groove (31) in the adjacent area at both ends and is made of acetal. One end of the vertical supporting shaft is inserted into and fixed to the vertical supporting shaft hole, and the other end of the vertical supporting shaft is fixed to a fixing unit in a chair leg. |
