VACUUM CLEANER
First Claim
1. A vacuum cleaner comprising:
- a cleaner body;
a pair of wheels provided at both side surfaces of the cleaner body and configured to rotate about a rotating center; and
a rear wheel unit provided at a bottom surface of the cleaner body and configured to provide an upward elastic force at a position rearward of the rotating center of the pair of wheels,wherein the cleaner body is configured to pivot about the rotating center and has a center of gravity that is located closer to a rear end of the cleaner body than the rotating center,wherein the rear wheel unit includes;
a supporting part that is rotatably coupled to the bottom surface of the cleaner body and configured to rotate in a pivoting direction of the cleaner body,an elastic portion that is coupled to the supporting part and that is configured to be elastically deformed based on the supporting part being rotated,a rotating member that is rotatably coupled to the supporting part and configured to rotate in a direction that is transverse to the rotating direction of the supporting part, anda rear wheel that is provided at the rotating member and configured to roll on ground.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided is a vacuum cleaner including a cleaner body of which a center of gravity is disposed at a rear side further than a rotating center thereof; one pair of moving wheels provided at both side surfaces of the cleaner body and configured to rotatably support the cleaner body and also to be rotated for travelling; and a rear wheel unit provided at a bottom surface of the cleaner body and configured to elastically support the cleaner body at a rear of the pair of moving wheels, wherein the rear wheel unit includes a supporting part rotatably installed at the bottom surface of the cleaner body and rotated in a rotating direction of the cleaner body; an elastic portion configured to extend from one side of the supporting part and to be elastically deformed by being in contact with the bottom surface of the cleaner body when the supporting part is rotated; a rotating member shaft-coupled to the supporting part and installed to be rotatable in a direction intersecting with a rotating direction of the supporting part; and a rear wheel installed at the rotating member and rolled while being in contact with the ground.
23 Citations
17 Claims
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1. A vacuum cleaner comprising:
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a cleaner body; a pair of wheels provided at both side surfaces of the cleaner body and configured to rotate about a rotating center; and a rear wheel unit provided at a bottom surface of the cleaner body and configured to provide an upward elastic force at a position rearward of the rotating center of the pair of wheels, wherein the cleaner body is configured to pivot about the rotating center and has a center of gravity that is located closer to a rear end of the cleaner body than the rotating center, wherein the rear wheel unit includes; a supporting part that is rotatably coupled to the bottom surface of the cleaner body and configured to rotate in a pivoting direction of the cleaner body, an elastic portion that is coupled to the supporting part and that is configured to be elastically deformed based on the supporting part being rotated, a rotating member that is rotatably coupled to the supporting part and configured to rotate in a direction that is transverse to the rotating direction of the supporting part, and a rear wheel that is provided at the rotating member and configured to roll on ground. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification