Wash tub for drum washing machine

Abstract

It relates to a roller washing machine's wash-tub. It comprises an internal rotary roller, the body of the wash-tub connecting with the motor through the rotary shaft at the back, a bearing casing molded at the back of the wash tub body and supporting the rotary shaft on the motor in motion. The back of the wash tub body is used to reinforce the intensity of the wash tub body and the outer space of the end of the bearing casing end therefore, it can prevent the obstruction to the flow of resin when molding the body of the wash tub. The special structure of this wash tub can prevent the occurrence of abnormal hardening shrinkage and failure of molding when branching off resins to mold the wash tub body, so as to improve the intensity and rigidity of the wash tub.

Description

technical field [0001] The present invention relates to a washing tub of a drum washing machine, in particular to a washing tub of a drum washing machine which can prevent abnormal phenomena such as abnormal hardening and shrinkage of the injection molding resin around the end of a bearing sleeve during injection molding of the washing tub. Background technique [0002] The washing machine is a device that uses the impact of water flow, the decontamination of detergent and mechanical friction to clean the pollutants on the laundry. It usually operates according to the processes of washing, rinsing, dehydration and drying. Fig. 1 is a cross-sectional view of the longitudinal structure of a drum washing machine in the prior art. Fig. 2 is a schematic diagram of the back structure of the washing tub in the drum washing machine in the prior art. Fig. 3 is a partial cross-sectional view along A-A in Fig. 2 . Fig. 4 is a schematic diagram of the injection molding process of the ...

AI Technical Summary

Problems solved by technology

But this prior art drum washing machine has the following problems: As shown in Figures 2 to 4, since the position where the end portion 28 of the bearing sleeve 22 at the back of the washing tub main body 20 is formed with a circumferential reinforcing rib 34, the When injection molding the main body 20 of the laundry tub, the injection resin 21 may have problems such as abnormal hardening and shrinkage or failure to form.

The end portion 28 of the bearing sleeve 22 and the hardened resin 21' will not only hinder the normal flow of the injection molding resin 21, but also may cause the circumferential reinforcement rib 34 at the bottom of the bearing sleeve 22 to form a certain space 46 due to the failure of the injection molding resin 21 to inject. The problem

In addition, if the injection molding of the washing tub main body 20 is not good, its strength will be reduced, so it is prone to deformation or damage.

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