Drum type washing machine

Abstract

A drum type washing machine is provided having a simplified drive unit support structure design and improved vibration dispersion characteristics. The washing machine includes a tub, a drum disposed inside the tub, a shaft coupled to the drum, a bearing supporting the shaft, a bearing housing supporting the bearing, and a base secured to the tub. The bearing housing has a rear end protruding from a rear wall of the tub, and the tub has an extension facing an outer peripheral surface of the rear end of the bearing housing.

Description

TECHNICAL FIELD[0001]The present invention relates to a drum type washing machine, and more particularly to a drum type washing machine that includes a drive unit of improved construction.BACKGROUND ART[0002]Generally, a drum type washing machine is provided with a motor pulley and a drum pulley located below a tub, which has a drum rotatably disposed therein, such that a driving force of a motor is transmitted to the drum via a belt connecting the motor pulley and the drum pulley.[0003]As such, since the driving force of the motor is transmitted to the drum via the belt, the conventional washing machine undergoes energy loss and produces a large amount of noise during energy and power transmission.[0004]FIG. 1 is a cross-sectional view of a portion of a drive unit of a conventional drum type washing machine.[0005]Referring to FIG. 1, the conventional drum type washing machine includes a tub 10, a shaft 20 and a base 40. The tub 10 which has a drum (not shown) is located outside a b...

AI Technical Summary

Benefits of technology

[0015]As apparent from the above description, the drum type washing machine according to the present invention includes a base of simple configuration, resulting in reduced manufacturing costs while improving manufacturing productivity.

[0016]Further, according to the present invention, since the base has a simple configuration, it is possible to reduce the frequency of manufacturing defects of the base and frequency of mismatch between components for a drive units, both of which can be caused by distortion and other defects of the base.

[0017]Further, according to the present invention, a contact area between a tub and a bearing housing becomes enlarged by the area of an extension, so that vibration transmitted through the bearing housing can be dispersed. Such dispersion of vibration leads to reduction in external force transmitted to components of the washing machine, thereby preventing damage of components, such as the tub and the like.

[0018]Further, according to the present invention, the base is configured to support the extension of the tub, thereby suppressing and dispersing vibration of the drive unit.

Problems solved by technology

As such, since the driving force of the motor is transmitted to the drum via the belt, the conventional washing machine undergoes energy loss and produces a large amount of noise during energy and power transmission.

In the conventional drum-type washing machine, it becomes difficult to couple together the components of the drive unit.

Further, the complicated shape results in distortion and other defections of products, which generally occur in manufacturing the components of the drive unit, including the tub 10, the bearing housing 30, and the base 40, thereby causing size and shape mismatch between the components.

A large degree of bending of the complicated shape causes a correspondingly large distortion, which leads to a high frequency of manufacturing defects of the components for the drive unit.

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