| 摘要 |
A caster is provided to improve durability by connecting pipe type legs of a table or a chair and maintaining their firm connection for a long time. A caster including a plastic caster frame(100), a plastic hollow axle unit(200) extended upwardly and a plastic wheel(300) rotatably installed on both sides of the caster frame, comprises: a leg connection member(600) formed in a cup shape for receiving a lower end of a pipe type leg of a table or a chair, which includes a bottom part formed in a cup shape, a cylinder part(620) integrally formed along an outer circumference of the bottom part and an axle insertion hole(630) formed in a center of the bottom part, a metallic caster axle(700), which includes an axle part(710) rotatably inserted into a hollow axle unit and a fixing part(720) fixed to the bottom part, which is inserted into the axle insertion hole of the leg connection member, and a coupling unit coupling the fixing unit of the caster axle with the leg connection member.
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