Pulley for drum washing machine

Abstract

The invention relates to a roller washer pulley. It roughly takes the shape of cup by punching treatment, axially linked behind the roller, and obtaining the electric machine power by the conveyer belt to rotate the roller; composed of back and side wall surfaces; the center of the back one set with the hub to make the roller inserted in; the side and back ones formed as an integral whole at right angles, the external surface of the side one contacting the conveyer belt; the relief formed on the back one, multiple relieves formed at regular intervals along the circumference of the back one. It is shaped by stretching the iron plate in the state of eliminating the relief.

Description

technical field [0001] The invention relates to a pulley of a drum-type washing machine. Furthermore, it relates to a pulley of a drum washing machine that can bring the following effects: by improving the pulley structure of the drum washing machine, resonance noise can be prevented during dehydration, processability and strength can be improved, and manufacturing cost can be reduced. Background technique [0002] When current consumers purchase household washing machines, they not only consider the washing performance of the washing machine, but also consider the convenience of use. Therefore, the development of an easy-to-use washing machine should be accelerated at present. [0003] The drum washing method is: put detergent, washing water and laundry into the drum, and use the driving force of the motor to generate friction between the rotating drum and the laundry, thereby washing; although the above drum washing method hardly affects the washing If the laundry is dam...

AI Technical Summary

Problems solved by technology

[0018] Embossments 105d are formed on the rear wall surface 105a of the above-mentioned pulley 105 in the prior art, and a plurality of above-mentioned embossments 105d are formed at a certain distance along the circumferential direction of the above-mentioned rear wall surface 105a. The above-mentioned embossments 105d can not only strengthen the above-mentioned pulley 105 overall strength, and as the handle of the pulley 105 during the above-mentioned conveyor belt 106 winding operation, but when rotating at high speed for dehydration, the natural frequency of the conveyor belt and the natural frequency of the pulley will be in a certain rotation frequency range (about 600-1300RPM ) in the same, which will cause resonance phenomenon, resulting in the problem of abnormal noise

[0019] That is to say, due to the influence of the concave-convex shape of the embossed object 105d formed on the rear wall surface of the pulley 105, the frequency band is consistent in a certain rotation frequency range, and a resonance phenomenon occurs, which will cause the conveyor belt 106 to vibrate and generate abnormal noise.

Images