| 摘要 |
PURPOSE: A caster assembly for a refrigerator is provided to adjust the height of the refrigerator and move the refrigerator conveniently. CONSTITUTION: A caster assembly(100) for a refrigerator comprises a support member(10), a rolling ball(20), primary support balls(30), a separation preventer(40), a guide pipe(50), and a height adjuster(60). The support member comprises fixing pieces(11). The rolling ball is guided by the retreated groove of the support member. The primary support balls are arranged in the groove or the support member. The separation preventer comprises a third male thread(41) and a secondary support ball. The secondary support ball is adhered to the exterior of the rolling ball and prevents the separation of the rolling ball. The height adjuster is guided by the guide pipe and adjusts the height of a refrigerator. A female thread is engaged with the secondary male thread(14) of the support member.
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