Suspension device and system for a washing machine

Abstract

A washing machine suspension device having a suspension shaft, a base member fixedly connected to the lower end of the suspension shaft, an elastic member located on the base member, and a support member having a central bore surrounding the suspension shaft, and a backing surface located above the base member. The support member has at least two compression members. Each compression member has a ramp that contacts the elastic member. The ramps are oriented such that a load is applied to the backing surface generates a reaction force between the support member and the elastic member to compress the compression member against the suspension shaft.

Description

TECHNICAL FIELD[0001]The present invention is related to dampers and suspension systems for washing machines.DESCRIPTION OF THE STATE OF THE ART[0002]The use of a suspension in tanks of washing machines is widely known in the industry. Using these devices is required for reducing vibrations in the machine during laundry and primarily during the centrifugation process, wherein the tank is rotated at elevated speed.[0003]Document BRPI0603245A discloses a suspension assembly for washing machines that is widely known and used in the state of the art. In the described configuration, the suspension assembly is applied to a washing machine of the type comprising four shafts, having a superior end coupled to the structural cabinet of the washing machine and a lower end coupled to a tank in order to maintain it suspended inside the cabinet. The suspension is located at the lower end of the shaft such that the tank is supported on the top portion of the external capsule.[0004]The suspension i...

AI Technical Summary

Benefits of technology

[0008]Another objective of the present invention is to provide a washing machine suspension that provides greater process simplicity and production control, which should ensure greater functional stability of the damping mechanism.SUMMARY OF THE INVENTION

Problems solved by technology

This, the spring is responsible for absorbing vibrations from the tank and the friction between the foam and the capsule is responsible for dissipating energy and as a consequence dampening the tank motion.

However, the used foam requires great dimensional precision, which makes it difficult for one to control the manufacturing process thereof in order to ensure power dissipation that is consistent with the requirements of the washing machine to which it is applied.

Also, another drawback of this solution is that, even though the suspension is in good operating conditions, the foam damping factor is constant for certain load ranges within the tank.

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