Shock-absorbing device of rolling washing machine

Abstract

The invention discloses a shock-absorbing device of a rolling washing machine, and relates to the field of washing machines. The shock-absorbing device comprises a shell, an outer cylinder, a tension spring connected above the outer cylinder and a damping support rod installed below the outer cylinder; an opening end and a bottom end of the outer cylinder are respectively provided with a front weight balancing block and a rear weight balancing block; and the shock-absorbing device is characterized in that: two pressure springs are installed below the outer cylinder and are respectively installed at the two sides of the bottom axis of the outer cylinder. In the scheme, the pressure springs are installed at the two sides of the bottom axis of the outer cylinder and used for respectively bearing the weight of the outer cylinder and the weight of the weight balancing blocks, the gravity applied to the damping support rod and the tension spring can be reduced, the demand intensity of the tension spring and the damping support rod can be reduced, and the service life of the damping support rod and the tension spring are prolonged. Moreover, the vibration and the noise of the whole rolling washing machine are controlled within certain ranges so as to achieve the purposes of reducing the vibration and eliminating the noise.

Description

technical field [0001] The invention relates to the field of washing machines, in particular to a shock-absorbing device for reducing the load of a tension spring and reducing the noise of a drum washing machine by supporting an outer cylinder with a compression spring. Background technique [0002] In the field of washing machines, the working method of the drum washing machine is different from that of the pulsator washing machine. The inner cylinder of the pulsator washing machine rotates left and right around the vertical axis to wash clothes, while the inner cylinder of the drum washing machine rotates left and right around the horizontal axis. Clothes and different rotation directions make the installation methods and shock absorption methods of the two outer cylinders also different. In terms of shock absorption, the outer cylinder of the drum washing machine is mostly hung in the air and placed in the box. The adopted scheme is: use two to four tension springs to han...

AI Technical Summary

Problems solved by technology

However, in the above-mentioned shock absorption method, since the tension spring and the damping support rod are continuously stressed, and the magnitude of the gravity changes from time to time with the amount of clothes and different washing procedures, the amplitude of the shaking of the outer cylinder is also different each time. Working in this state will lead to a certain degree of deformation of the tension spring and damping support rod, which reduces the service life and affects the shock absorption effect of the washing machine

In addition, the extension spring and the damping support rod are point-connected to the outer cylinder. The shock absorption principle is to expand and contract the movement stroke of the outer cylinder with the change of the centrifugal force of the outer cylinder. When the centrifugal force of the outer cylinder is greater than the limit of the extension spring or the damping support rod, There will be a collision between the outer cylinder and the box. During work, the shock absorption of the drum washing machine mainly occurs during the dehydration process. The amount of clothes and washing water in the inner cylinder will affect the size of the centrifugal force. When the inner cylinder is dehydrated, the clothes will The water in the bucket is a process of gradually decreasing. If the clothes in the inner bucket are not balanced at the beginning of dehydration, the centrifugal force generated during rotation is often greater than the shock absorption limit of the tension spring and the damping support rod, resulting in a larger vibration of the inner bucket. Noise, this damage to the tension spring and damping support rod is also greater

Therefore, in the prior art, the dehydration speed is often reduced to reduce the noise, which not only affects the dehydration effect, but also reduces the work efficiency.

[0003] A drum-type washing machine is disclosed in Patent No. 00800325.4, which uses a damping support rod installed below the outer cylinder and a tension spring above it to support the outer cylinder and reduce noise. The structure of the damping support rod adopts various methods. Including the piston method and the spring method, this solution uses the restriction of the displacement of the outer cylinder to relieve the centrifugal force on the outer cylinder, but like other drum washing machines, the weight of the outer cylinder is mainly borne by the upper tension spring, resulting in the diameter of the tension spring Increase, the extension spring of the washing machine is in a stressed state whether it is working or not, which increases the failure coefficient of the extension spring, and cannot install a larger counterweight, making it difficult to balance the centrifugal force on the entire washing machine

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