Washing machine drain valve retractor

Abstract

The invention discloses a washing machine drain valve retractor comprising a synchronous motor, a terminal support, an upper cover and an output gear. The synchronous motor is mounted in a motor base. The terminal support and the upper cover are mounted on the end face of the motor base in a matching manner. The output gear mounted in the synchronous motor is driven by a motor rotor through a gear train. A rotary member is connected to an output gear shaft and comprises a driving wheel, a transmission wheel and an output wheel. The circumstance of the transmission wheel is provided with three tooth pieces at intervals, and a group of pawls is arranged on the periphery of each tooth piece axially. One end of each tooth piece is formed on the circumstance of the transmission wheel in an equidistant manner, and the other end of the tooth piece extends towards one side in a suspended manner along the circumstance of the transmission wheel. The claws on the periphery of each tooth piece match with ratchets arranged on the inner edge of the output wheel. Through grooves matching with three driving shafts formed on the end face of the driving wheel in an equidistant manner are formed on the end faces of the tooth pieces radially. A crankshaft connected with a pull rod of a drain valve is arranged on the end face of the output wheel. The washing machine drain valve retractor has the advantages of simple structure, reliable performance, low cost and the like.

Description

technical field [0001] The invention relates to a tractor for a drain valve of a washing machine, which belongs to the field of washing machine accessories. Background technique [0002] The tractor of the washing machine drain valve is an important accessory for washing machine drainage. At present, the drain valve puller of the washing machine is mostly composed of a synchronous motor installed in the motor base, matched with a terminal bracket and an upper cover installed on the end surface of the motor base, and an output gear installed in the synchronous motor and driven by the motor rotor through the gear train gear. It consists of rotating parts connected to the output gear shaft. For example, Chinese patent 201120250243.2 discloses a motor gear puller for washing machines. However, due to the use of this washing machine drain valve puller consisting of rotating parts, a running wheel, a crankshaft and a rotary spring, it not only uses many parts, has a large volume...

AI Technical Summary

Problems solved by technology

However, due to the use of this washing machine drain valve puller consisting of rotating parts, a running wheel, a crankshaft and a rotary spring, it not only uses many parts, has a large volume, complex structure, high manufacturing cost and failure rate, but also, Since the rotary spring is made of metal, it will be easily corroded and damaged if it is exposed to the air for a long time, thus affecting the normal drainage performance of the washing machine.

Images