Vacuum cleaner

1. A dust separating device for a vacuum cleaner, the dust separating device comprising:

a dust separating unit including a first main body movably connected to a second main body, the dust separating unit configured to generate a cyclone airflow,

wherein the second main body includes a plurality of sub bodies coupled together,

wherein the first main body and the plurality of sub bodies define a cyclone chamber in which the cyclone airflow is generated,

wherein the plurality of sub bodies comprises a first sub body and a second sub body directly coupled to the first sub body in a direction parallel to an axis of the cyclone airflow,

wherein the first main body is coupled to the first sub body in a direction substantially perpendicular to the axis of the cyclone airflow, and

wherein the first main body defines a portion of the cyclone chamber and the plurality of sub bodies defines another portion of the cyclone chamber.

2. The device of claim 1 , wherein the first sub body includes a first filter extending along the axis of the cyclone air flow and the second sub body includes a second filter extending along the axis of the cyclone air flow, and the first filter is spaced apart from the second filter.

3. The device of claim 2 , wherein each of the first and second sub bodies includes a hinge coupling portion, and the first main body is movably connected to the second main body at the hinge coupling portions.

4. The device of claim 2 , wherein each of the first and second sub bodies includes a suction portion to receive an air flow containing dust, and each of the first and second sub bodies include an air discharge portion.

5. The device of claim 4 , wherein the first main body includes a dust discharge portion to discharge dust removed from the air flow containing dust.

6. The device of claim 5 , further comprising a filter unit connected to the dust separating unit to receive air from each of the air discharge portions.

7. The device of claim 1 , further comprising a filter unit connected to the dust separating unit to receive air from the plurality of air discharge portions.

8. The device of claim 7 , wherein the filter unit includes a first case coupled to the dust separating unit, a second case movably connected to the first case, and a filter located between the first and second cases.

9. The device of claim 8 , wherein the first case includes a plurality of opening portions to receive air from the plurality of air discharge portions of the second main body.

10. The device of claim 9 , wherein the second case includes a discharge hole, the filter being located between the plurality of opening portions and the discharge hole.

11. The device of claim 9 , wherein the first case includes at least one noise reducing portion in each of the plurality of opening portions.

12. A vacuum cleaner comprising:

a main vacuum cleaner body; and

a dust separating device including a dust separating unit and a filter unit, the dust separating device being detachably mounted to the main vacuum cleaner body,

wherein the dust separating unit includes a plurality of main bodies and the plurality of main bodies defines a cyclone chamber in which cyclone airflow is generated,

wherein the plurality of main bodies includes a first main body movably connected to a second main body in a direction substantially perpendicular to an axis of the cyclone airflow,

wherein the second main body includes a first sub body and a second sub body coupled to the first sub body in a direction parallel to the axis of the cyclone airflow, and

wherein the first main body defines a portion of the cyclone chamber and the first and second sub bodies define another portion of the cyclone chamber.

13. The vacuum cleaner of claim 10 , wherein each of the first and second sub bodies includes a hinge coupling portion, and the first main body is movably connected to the second main body at the hinge coupling portions.

14. The vacuum cleaner of claim 10 , wherein each of the first and second sub bodies includes a suction portion to receive an air flow containing dust, and each of the first and second sub bodies include an air discharge portion.

15. The vacuum cleaner of claim 12 , wherein the filter unit includes a first case coupled to the dust separating unit, a second case movably connected to the first case, and a filter located between the first and second cases.

16. The vacuum cleaner of claim 13 , further comprising a dust tank detachably mounted to the main vacuum cleaner body, the dust tank being provided separately from the dust separating unit.

17. The vacuum cleaner of claim 13 , further comprising a cover member movably attached to the main vacuum cleaner body, the cover member being configured to at least partially cover the dust separating device in a closed position.

18. A dust separating device for a vacuum cleaner, the dust separating device comprising:

a dust separating unit including a first main body movably connected to a second main body,

wherein the second main body includes a plurality of sub bodies coupled together,

wherein the first main body and the plurality of sub bodies define a cyclone chamber in which cyclone airflow is generated,

wherein the plurality of sub bodies includes a first sub body having a first suction portion and a second sub body having a second suction portion,

wherein the first main body includes a dust discharge portion through which dust separated from air in the cyclone chamber is discharged, and

wherein the first main body and the first sub body is configured to generate a first cyclone airflow and the first main body and the second sub body is configured to generate a second cyclone airflow, and each of the first and second cyclone airflows moves dust in mutually convergent directions toward the dust discharge portion.