Clutch mechanism for single drive system of washing machine

Abstract

The invention relates to a clutch mechanism for a single drive system of a washing machine. A lower shell body and an upper shell body are fixedly connected to form an inside space in which the clutch mechanism is located. The clutch mechanism comprises an electromagnetic coil mechanism, a clutch gear ring, a meshing part, an upper matching part and a lower matching part. A mounting plate serves as the upper matching part. A drive shaft located above a stator retainer is fixedly connected with a clutch tooth disc. The clutch tooth disc serves as the lower matching part to achieve vertical movement of the clutch gear ring along the meshing part and select one to match with the mounting plate and the clutch tooth disc. The clutch mechanism is good in clutch performance, low in manufacture cost, small in noise, convenient to mount and suitable for popularization and application in production.

Description

technical field [0001] The invention relates to a clutch mechanism for a single drive system of a washing machine, which is suitable for use in drum washing machines, pulsator washing machines and stirring washing machines. Background technique [0002] The driving system of the washing machine in the prior art mainly includes a motor, a housing, a clutch mechanism, a drive shaft, and a drive shaft sleeve, wherein the drive shaft is rotatably arranged in the drive sleeve, its lower end is connected with the motor, and its upper end is connected with the washing machine pulsator. Or the agitator is connected, and the drive shaft sleeve is fixedly connected with the inner tub of the washing machine. The clutch mechanism is connected with the motor, and is used to control whether the output power of the motor is transmitted to the drive shaft sleeve. It can also include a gear transmission mechanism, the gear transmission mechanism is arranged between the drive shaft and the d...

AI Technical Summary

Problems solved by technology

This patent adopts the clutch device of electromagnetic clutch principle, which has the advantages of small size and convenient operation. However, because its clutch device 131 is located between the rotor and the lower part of the bearing housing 130, the whole is located inside the motor. In the washing machine with harsh environment, and the motor is a non-sealed structure, the coupling 133 in the electromagnetic clutch device is easily eroded by water and other impurities, thus easily leading to clutch failure. The electric motor itself generates heat due to the energized stator coil winding, which causes the pull-in voltage required by the electromagnetic clutch device to be too high. Since the pull-in voltage is preset, it is easy to cause clutch failure; in addition, because the coupling described in this patent 133 collides with the bearing shell 130 when it moves upwards, which not only produces obvious noise, but also in the washing condition, because the coupling 133 and the bearing shell 130 are only fixed by mutual friction, not only the fixation is unstable, And the coupling part 133 and the bearing shell 130 that are in contact with each other and rubbing against each other experience a long period of mutual wear and tear, resulting in a short service life.

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