Canister type vacuum cleaner

Abstract

A canister type vacuum cleaner is disclosed. An object of the present invention is to provide a canister type vacuum cleaner including a suction nozzle having a movement direction changed smoothly and quickly, even in case of colliding with an obstacle. The canister type vacuum cleaner includes a body, a wheel member rotatably provided in the body and supporting the body, the wheel member including a main rotation member rotatably provided in the body and an auxiliary rotation member rotatably provided in the main rotation member to be rotated along a predetermined rotational direction different from a rotational direction of the main rotation member.

1 . A canister type vacuum cleaner comprising:
 a body;   a wheel member rotatably provided in the body and supporting the body, the wheel member comprising:   a main rotation member rotatably provided in the body; and   an auxiliary rotation member rotatably provided in the main rotation member to be rotated in a predetermined rotational direction different from a rotational direction of the main rotation member.   
     
     
         2 . The canister type vacuum cleaner as claimed in  claim 1 , wherein the main rotation member comprises an accommodation part accommodating the auxiliary rotation member and the auxiliary rotation member is roller-shaped and installed in the accommodation part. 
     
     
         3 . The canister type vacuum cleaner as claimed in  claim 2 , wherein the auxiliary rotation member is arranged to be rotated along a predetermined rotational direction that is orthogonal to a rotational direction of the main rotation member. 
     
     
         4 . The canister type vacuum cleaner as claimed in  claim 2 , wherein the auxiliary rotation member is arranged to be rotated along a predetermined rotational direction that is diagonal to a rotational direction of the main rotation member. 
     
     
         5 . The canister type vacuum cleaner as claimed in  claim 2 , wherein the plurality of the wheel member are provided and the plurality of the wheel members are rotatably arranged at least one of side and lower portions of the body. 
     
     
         6 . The canister type vacuum cleaner as claimed in  claim 5 , wherein at least one wheel member provided in the side portion of the body is arranged oblique with respect to the side portion of the body. 
     
     
         7 . The canister type vacuum cleaner as claimed in  claim 5 , wherein the wheel member comprises,
 a first wheel member; and   a second wheel member having a predetermined size larger than the size of the first wheel member, and   the first wheel member is rotatably arranged to the lower portion of the body and the second wheel member is rotatably arranged to the side portion of the body.   
     
     
         8 . The canister type vacuum cleaner as claimed in  claim 2 , wherein the plurality of the wheel member are provided and rotational directions of the main rotation members provided in the plurality of the wheel members are same to each other. 
     
     
         9 . The canister type vacuum cleaner as claimed in  claim 2 , wherein the plurality of the wheel member are provided and rotational directions of the main rotation members provided in the plurality of the wheel members are different from each other. 
     
     
         10 . The canister type vacuum cleaner as claimed in  claim 1 , wherein an outermost portion of the auxiliary rotation member is extended outward further than an outermost portion of the main rotation member only to maintain contact with a floor. 
     
     
         11 . A canister type vacuum cleaner comprising:
 a suction nozzle;   a wheel member provided in the suction nozzle, the wheel member comprising:   a main rotation member rotatably provided in the suction nozzle; and   a plurality of auxiliary rotation members rotatably provided in the main rotation member.   
     
     
         12 . The canister type vacuum cleaner as claimed in  claim 11 , wherein the auxiliary rotation members are roller-shaped and the main rotation member comprises an accommodation part rotatably accommodating each of the auxiliary rotation members, and
 an outermost portion of the auxiliary rotation member is extended outward further than an outermost portion of the main rotation member to maintain contact with a floor.