Automatic weighing device for washing machine

Abstract

The invention discloses an automatic weighing device for a washing machine, which comprises a foot installed under the base of the washing machine and a weighing sensor installed on the foot. The bottom of the foot is provided with a cavity with a downward opening, and the weighing sensor Closed and installed in the cavity by the support. The foot includes a connecting part and a supporting part, both of which are in a convex shape, the connecting part is hollow in the axial direction, and the outer wall is provided with threads, the supporting part is arranged under the connecting part, and the cavity is arranged in the supporting part to connect with the connecting part. The hollow part of the part is connected. The supporting member includes a supporting unit and a fixing unit, the fixing unit movably installs the supporting unit in the cavity, the upper end surface of the supporting unit is in contact with the load cell, and the lower end surface is supported on the ground. The invention can automatically weigh the weight of clothes and the amount of water in the washing bucket of the washing machine, and has the characteristics of high weighing accuracy and small error.

Description

technical field [0001] The invention relates to the field of washing machines, in particular to an automatic weighing device for washing machines. Background technique [0002] Existing washing machines are all driven by the motor to rotate the washing tub filled with clothing to work normally, and all have the weighing function of clothing. There are many ways to realize the weighing function of the washing machine: by controlling the motor to reach the first predetermined speed, and making the motor rotate at a constant speed at the first predetermined speed, measure the first torque of the motor at this time, and then control the motor to make the motor rotate from Accelerate from the first predetermined speed to the second predetermined speed, measure the rising torque of the motor when it rises from the first predetermined speed to the second predetermined speed, and finally control the motor to rotate at a constant speed at the second predetermined speed, and measure t...

AI Technical Summary

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 shock absorption, 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

[0007] 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

[0008] Due to the vibration generated by the dehydration of the washing machine, the washing machine is displaced to the inclined surface, especially when the user moves and places it, and the washing machine is large in size, high in the center of gravity, and heavy in quality. Many manufacturers believe that the measurement accuracy of the load cell installed on the foot of the washing machine is not high. The error is large, and it is easy to be damaged. In view of this, the present invention is proposed

Images