Vacuum cleaner

Patent metadata

Field	Value
Publication number	US-9763549-B2
Application number	US-201414445465-A
Country	US
Kind code	B2
Filing date	Jul 29, 2014
Priority date	May 7, 2014
Publication date	Sep 19, 2017
Grant date	Sep 19, 2017

Abstract

Disclosed is a vacuum cleaner. The vacuum cleaner includes a suction nozzle housing, an agitator provided within the suction nozzle housing, and a suction channel guiding air sucked into the suction nozzle housing to a dust collector, the agitator includes a body rotatably installed in the suction nozzle housing, brush members disposed on the body in parallel with the center of rotation of the body and combined with the body so as to be fixed, and auxiliary members disposed on the body in parallel with the center of rotation of the body and combined with the body so as to be movable when the body is rotated, and a protrusion overlapping with parts of the brush members and contacting the brush members when the body is rotated is provided in the suction channel.

First claim

What is claimed is:

1. A vacuum cleaner comprising:
a suction nozzle housing;
an agitator provided within the suction nozzle housing; and
a suction channel guiding air sucked into the suction nozzle housing to a dust collector,
wherein the agitator includes:
a body rotatably installed in the suction nozzle housing;
brush members disposed on the body in parallel with the center axis of rotation of the body and combined with the body so as to be fixed thereto; and
auxiliary members disposed on the body in parallel with the center axis of rotation of the body and loosely combined with the body so as to be movable in a circumferential direction of the body when the body is rotated,

wherein a protrusion having a blunt end is provided in the suction channel, the protrusion being arranged to overlap with parts of the brush members and to contact the brush members when the body is rotated, and
wherein a recess is formed in each of the auxiliary members at a position which aligns with the protrusion.

2. The vacuum cleaner according to claim 1 , wherein the protrusion is provided at an upstream entrance of the suction channel.

3. The vacuum cleaner according to claim 2 , wherein:
the protrusion is provided at an upper portion of the entrance of the suction channel; and
the center axis of rotation of the body is at a lower level than the blunt end of the protrusion.

4. The vacuum cleaner according to claim 3 , wherein the protrusion is disposed at a position of the entrance of the suction channel corresponding to a lengthwise center of the body and shields a part of a cross-section of the entrance in a widthwise direction.

5. The vacuum cleaner according to claim 1 , wherein the protrusion is formed integrally with the suction channel.

6. The vacuum cleaner according to claim 1 , wherein the brush members extend radially from the center axis of rotation of the body to a greater length than the auxiliary members.

7. The vacuum cleaner according to claim 1 , wherein the brush members are formed from a material being more easily deformable than the material of the auxiliary members.

8. The vacuum cleaner according to claim 1 , wherein the auxiliary members extend radially so as not to contact the protrusion.

9. The vacuum cleaner according to claim 1 , wherein:
the body includes reception grooves extending parallel to the center axis of rotation of the body;
each of the auxiliary members includes a coupling part received in a corresponding reception groove; and
the coupling part has a smaller cross-sectional size in the circumferential direction of the body than the cross-sectional size of the reception groove so as to be movable within the reception groove in the circumferential direction of the body.

10. The vacuum cleaner according to claim 1 , wherein two auxiliary members are disposed between each two neighboring brush members along a circumference of the body.

11. The vacuum cleaner according to claim 10 , wherein the two auxiliary members are disposed adjacent to one of the brush members interposed therebetween.

12. The vacuum cleaner according to claim 10 , wherein the number of the auxiliary members is twice the number of the brush members on the body.

13. The vacuum cleaner according to claim 1 , wherein the body comprises first through holes through which the auxiliary members are radially exposed to outside the roller.

14. The vacuum cleaner according to claim 13 , wherein each of the first through holes has a smaller circumferential width than a cross-sectional size in the circumferential direction of the body of a first coupling part included in the auxiliary members.

15. The vacuum cleaner according to claim 1 , further comprising a drive motor installed in the suction nozzle housing and connected to the agitator to rotate the agitator.

16. The vacuum cleaner according to claim 1 , wherein the suction nozzle housing includes:
a base plate;
a top plate covering an upper surface of the base plate and forming a space in which the agitator is received; and
a transparent plate installed on the top plate and allowing a user to observe the agitator.

Assignees

• Lg Electronics Inc

Inventors

• Hyun Kietak
• Hwang Philjae
• Hwang Mantae

Classifications

• A47L9/066

  with adjustably mounted brushes, combs, lips or pads; Height adjustment of nozzle or dust loosening tools (for suction cleaners with handles and nozzles fixed on the casing A47L5/34) · CPC title

• A46B13/001

  Cylindrical or annular brush bodies · CPC title

• A47L9/0477 Primary

  Rolls · CPC title

• A47L9/0411

  driven by electric motor · CPC title

• A46B7/10

  as a rotating cylinder · CPC title