Vibration damper with weighting function and washing machine

Abstract

The present invention discloses a vibration damper with a weighing function and a washing machine. The damper comprises a hanging rod, a first housing having a receiving cavity, and a pressure buffer mechanism mounted in the first housing. The upper end of the first housing is provided with a support rack and the lower end of the first housing is provided with an opening. The damper further comprises a second housing with the receiving cavity and a weighting mechanism arranged in the second housing. The second housing is slidably arranged in the lower end opening of the first housing. The hanging rod penetrates through the support rack and extends into the first housing and penetrates through the pressure buffer mechanism to be connected with the weighting mechanism in the second housing. The washing machine is made by adding weighting springs on the basis of a conventional vibration damper so that impact of damping of vibration damping springs upon displacement and weight of the vibration damping springs is avoided. By increasing the number of the weighting springs, measurement distance is increased so that testing precision and measurement distance of the weighting sensor are improved. The vibration damper is featured by being good in vibration damping effect, accurate in weighting measurement, compact in structure and long in service lifetime.

Description

technical field [0001] The invention relates to the field of washing machines, in particular to a vibration damping device, in particular to a vibration damping device with a weighing function and a washing machine with the device. Background technique [0002] Most of the existing fully automatic washing machines use the motor itself to drive the washing tub containing the clothes to rotate to realize the weighing function. The weighing is realized in the following ways: 1. By controlling the motor to reach the first predetermined speed and making the motor rotate at a constant speed at the first predetermined speed, the first torque of the motor at this time is measured, and then the motor is controlled to make the motor rotate from the first predetermined speed. The speed is accelerated to the second predetermined speed, and the rising torque of the motor when the motor rises from the first predetermined speed to the second predetermined speed is measured. Finally, the mo...

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Problems solved by technology

[0005] Although the above structure can be accurately measured, there are still the following defects: because the load cell is installed on the suspension system, the installation of washing machine components is relatively complicated, wiring is difficult, and there are potential safety hazards; in addition, because the suspension system is mainly used for vibration reduction, During the working process, the vibration of the washing bucket assembly is relatively large, resulting in a large change in the pressure of the load cell installed between the spring seat and the sensor seat, shortening the service life

[0008] This structure is equivalent to embedding the existing electronic balance above the shell of the washing machine. Although it can measure the weight of the clothes, the clothes must be placed on the weighing device for measurement before each washing, and then put into the washing machine for washing. Very cumbersome to use; secondly, the device does not measure the amount of water in the washing machine

[0009] Some manufacturers also realize the weighing function by installing strain gauges on the feet of the washing machine, but the peripheral circuits installed on the foot structure are not easy to connect, difficult to route, and there are potential safety hazards. Items lead to inaccurate measurement, or the user needs to move the item every time, which is inconvenient to use

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