Water drainage pump

Abstract

The invention relates to a discharging pump used in washing machine, wherein the invention improves the driving force transmission structure between blade wheel and rotation axle to drive the blade wheel successfully, and reduce the impact possibility, to reduce noise and avoid hurting fittings. And the invention is formed by: blade wheel whose one part of inner circumference has protruded blade wheel head; frame with blade wheel containing part and rotor containing part; rotation axle formed along the axial center of rotor; and driving force transmitter. Said driving force transmitter is combined with rotation axle; when the rotation axle rotates to reach some starting force, via the circle center force, the rotation axle will be suspended with the blade wheel head to rotate the blade wheel.

Description

technical field [0001] The present invention relates to a drain pump for a washing machine, and more particularly, to a drain pump for a washing machine which can operate smoothly by minimizing the restraint force at the initial start-up. Background technique [0002] Generally speaking, a washing machine is a machine that automatically washes various kinds of laundry. Furthermore, the washing machine includes a drain pump that can automatically complete the draining operation of the washing water used for washing. [0003] figure 1 It is a perspective view showing the external structure of a conventional general drain pump. figure 2 is to show figure 1 The I-I line profile. image 3 is to show figure 2 The partial cutaway exploded oblique view of the impeller head and the rotating shaft head. Figure 4 It shows the running relationship between the impeller head and the rotating shaft head figure 2 The II-II line sectional view. [0004] That is, the conventional ...

AI Technical Summary

Problems solved by technology

[0017] However, in the structure of the above-mentioned drain pump according to the prior art, even if the rotation direction of the above-mentioned rotor 30 is changed, the starting force for driving the rotation shaft head 60 of the impeller head 51a is still insufficient, so that the rotation direction of the rotor 30 is reversed. The phenomenon of conversion persistence

[0018] Therefore, there is continuous collision between the hook protrusion 61 of the above-mentioned rotating shaft head 60 and the above-mentioned impeller head 51a, and the impact noise caused by the above-mentioned collision also causes dissatisfaction among consumers.

[0019] In addition, there is a problem that cracks and other damages occur in the rotating shaft head 60 or the impeller 50 due to the impact caused by the collision.

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