Suction brush assembly and a vacuum cleaner having the same

1. A suction brush assembly comprising:

an assembly body having a suction inlet for drawing in dust on a surface being cleaned;

a cover connected to the assembly body and having an opening for drawing in an external air; and

a rotation body rotatably mounted to the assembly body and mounting a detachable cleaning member at a lower part thereof into contact with the surface being cleaned; and

said assembly body, cover, rotation body and cleaning member constructed and arranged so that external air drawn in through the opening flows out a lower part of the assembly body toward the floor through a gap formed between the rotation body and the assembly body.

2. The suction brush assembly of claim 1 , further comprising:

a turbine fan rotatably mounted on the assembly body; and

a power transmitter connected to the turbine fan to transmit a driving force to the rotation body.

3. The suction brush assembly of claim 2 , wherein the power transmitter comprises a worm coaxially formed with the turbine fan and a worm wheel formed at an upper part of the rotation body to correspond to the worm.

4. The suction brush assembly of claim 1 , wherein the cover comprises a first cover connected to the assembly body to cover the rotation body and a second cover disposed above the first cover, being connected to the assembly body, and the first and the second covers respectively have an opening.

5. The suction brush assembly of claim 1 , wherein the assembly body is further comprised of:

a path partition defining a suction path through the assembly body, said path partition having a plurality of holes; and wherein,

said rotation body rotatably mounted to the assembly body is comprised of a cleaning member that rotates with the rotation body to wipe dust from a surface being cleaned.

6. The suction brush assembly of claim 5 , wherein the path partition further comprises an upper partition forming an upper part of the suction path, said holes being formed on the upper partition.

7. The suction brush assembly of claim 6 , wherein the assembly body further comprises a sound-absorbing member.

8. The suction brush assembly of claim 6 , wherein the assembly body further comprises a sound-absorbing member, provided at a top surface of the upper partition.

9. The suction brush assembly of claim 7 , wherein the sound-absorbing member reduces noise signals from the suction brush assembly that are above 2113 Hz., by more than three (3) decibels (3 db).

10. A vacuum cleaner comprising:

a cleaner body including therein a suction force generator; and

a suction brush assembly as claimed in claim 1 .

11. The vacuum cleaner of claim 10 , wherein the suction brush assembly is further comprised of:

a path partition defining a suction path through the assembly body, said path partition having a plurality of holes; and wherein,

said rotation body rotatably mounted to the assembly body is comprised of a cleaning member that rotates with the rotation body to wipe dust from a surface being cleaned.

12. The vacuum cleaner of claim 11 , wherein the suction brush assembly is further comprised of:

an upper partition forming an upper part of the suction path, said holes being formed on the upper partition.

13. The vacuum cleaner of claim 12 , wherein the suction brush assembly further comprises: a sound-absorbing member.

14. The vacuum cleaner of claim 12 , wherein the suction brush assembly further comprises: a sound absorbing member, provided at a top surface of the upper partition.

15. The suction brush assembly of claim 13 , wherein the sound-absorbing member reduces noise signals from the suction brush assembly that are above 2113 Hz., by more than three (3) decibels (3 db).