Vacuum cleaner

A vacuum cleaner comprising:

• a housing having a dust collection chamber inside the housing;
• a main body that is movable against the housing between a first position and a second position;
• a guide device between the housing and the main body, fixed to the housing, and including a roller protruding toward the main body so as to roll on an outer surface of the main body to guide movement of the main body against the housing;
• a rubbish removal member in the dust collection chamber;
• and
• an opening or closing device to open or close the dust collection chamber,
• wherein the main body, the guide device, the rubbish removal member, and the opening or closing device are configured so that,
• when the main body is moved against the housing from the first position to the second position, the opening or closing device opens the dust collection chamber, and the rubbish removal member moves toward an open end of the dust collecting chamber to allow rubbish removed by the rubbish removal member to be discharged out of the dust collection chamber, and
• when the main body is moved against the housing from the second position to the first position, the rubbish removal member moves away from the open end of the dust collection chamber toward an inside of the dust collection chamber, and the opening or closing device closes the dust collection chamber.