Dust collector for vacuum cleaner

A vacuum cleaner comprising:

• a main body configured to generate a suction force;
• a suction part configured to suck air containing dust;
• and
• a dust collector configured to separate the dust from the air introduced into the suction part and discharge the separated dust, wherein the dust collector comprises:
• a first case having a first dust storing unit in the first case;
• a first cyclone eccentrically provided in the first case to be in contact with an inner circumferential surface of the first case, the first cyclone being configured to separate dust from air introduced into the first cyclone and discharge the separated dust into the first dust storing unit;
• two second cases provided on both sides of the first cyclone and contacting an outer circumferential surface of the first cyclone and the inner circumferential surface of the first case, at least one of the second cases having a second dust storing unit therein;
• a second cyclone disposed inside one of the second cases, the second cyclone being configured to separate fine dust from the air introduced into the second cyclone from the first cyclone and discharge the separated fine dust into the second dust storing unit;
• and
• a lower cover being coupled to the first case so as to open and close the first case, in response to the lower cover being open, dust collected in the first cyclone, the first and second dust storing units being externally dischargeable;
• a central shaft rotatably coupled to the first cyclone;
• a rotary member rotatably installed at the lower cover and disposed at a position corresponding to the central shaft so as to engage with or disengage from the central shaft according to opening and closing of the lower cover, the rotary member having a shape corresponding to a part of the central shaft to be rotated together with the central shaft;
• and
• a compression plate coupled to the central shaft and rotating in one direction and in a reverse direction within a rotation range defined by the two second cases so as to compress the dust collected in the first dust storing unit,
• wherein the first case, the first cyclone, the two second cases and the second cyclone are arranged at the same height, and are arranged to extend toward the height direction of the dust collector.