PURPOSE: A canister-type vacuum cleaner is provided to easily switch a direction even in a narrow space by remarkably reducing a turning radius.;CONSTITUTION: A canister-type vacuum cleaner comprises a main body(50) and wheel members(700). The wheel members are rotatably formed on the bottom of the main body and support the main body. Each wheel member comprises a main rotation member(701) and an auxiliary rotation member(702). The main rotation member is rotatably formed n the main body. The auxiliary rotation member is formed on the main rotation member and is rotated in the opposite direction to the main rotation member.;COPYRIGHT KIPO 2013
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