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US 9,284,676 B2Granted
Drum type washing machine
AssigneeSamsung Electronics Co., Ltd.
InventorsJi Hoon Choi, Phil Soo Chang, Bong Wha Kwak, Jeong Hoon Kang, Hoon Wee, Tae Jin Park, Sung Jin Cho, Sang Wook Kim, Gyu Sung Na
Life of this patent
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Abstract
Disclosed herein is a drum type washing machine including a body, a tub arranged in the body, and a drum rotatably installed in the tub, and an inner surface of a rear wall of the has a flat portion along a rotating direction of the drum.
Claims8
A drum type washing machine comprising:
- a body;
- a tub arranged in the body;
- a drum rotatably installed in the tub;
- and
- a bearing housing insert-molded into a rear wall of the tub,
- wherein an inner surface of the rear wall of the tub has a first portion that has no convex nor concave shape in a rotating direction of the drum where the bearing housing is insert-molded, and a second portion formed as an outer rim with reinforcing portions outside of the first portion where the bearing housing is insert-molded,
- wherein an outer surface of the rear wall of the tub includes a plurality of concentric circular ribs having a common center as a center of the tub, and a plurality of linear ribs radially extending from the center of the tub, and
- the bearing housing includes rib-shaped reinforcing members formed in a shape corresponding to the plurality of concentric circular ribs and the plurality of linear ribs,
- wherein the reinforcing portions have a curved shape and protrude forward from the second portion of the inner surface of the rear wall of the tub in a circumferential direction of the tub to directly face the drum with no intervening structure, so as to reduce resistance on a flow of air between a rear wall of the drum and the rear wall of the tub during rotation of the drum.
6 more elements
A drum type washing machine comprising:
- a tub having a rear wall;
- a drum rotatably arranged in the tub;
- and
- a bearing housing contained in the rear wall of the tub,
- wherein an inner surface of the rear wall of the tub includes a first region corresponding to the bearing housing, and a second region around the first region formed with reinforcing protrusions, and the first region is a region that has no convex nor concave shape in a rotating direction of the drum where the bearing housing is insert-molded, and
- wherein an outer surface of the rear wall of the tub includes a reinforcing portion formed in the second region,
- wherein the reinforcing portion protrudes from the inner surface of the rear wall of the tub and include a plurality of concentric circular ribs having a common center as a center of the tub, and a plurality of linear ribs radially extending from the center of the tub, and the bearing housing includes rib-shaped reinforcing members formed in a shape corresponding to the plurality of concentric circular ribs and the plurality of linear ribs,
- wherein the reinforcing protrusions have a curved shape and protrude forward from the inner surface of the rear wall of the tub in a circumferential direction of the tub to directly face the drum with no intervening structure, so as to reduce resistance on a flow of air between a rear wall of the drum and the rear wall of the tub during rotation of the drum.
5 more elements
Dependencies are inferred from the claim text.