A driving generating device and control method used in a sonic facial cleansing brush

Abstract

The invention discloses a driving generating device and a control method used in a sonic facial cleansing brush. The driving generating device includes an electromagnetic driving assembly and a magnetic induction response working assembly; the electromagnetic driving assembly includes an iron core stator, a plastic skeleton, a coil part and an electromagnetic field protection Leakage protection shell; a magnetic sound gap is formed between the magnetic induction response working component and the electromagnetic drive component; the magnetic induction response working component includes a magnetic block fixing seat, an elastic response arm, a swing fixing frame, and a pair of induction electromagnetic drive components A magnetic block with a changing magnetic field and opposite polarity and a swing shaft for driving the brush head; the two magnetic blocks are fixed on one side of the magnet core and a magnetic gap is formed between them; the two ends of the elastic response arm are respectively connected to the swing fixed frame and magnetic block fixing seat; thereby, it only needs a small electromagnetic force to push the elastic response arm to swing, its electromagnetic sound wave conversion rate is high, its performance is stable and reliable, its noise is low, and its parts are few and its structure is simple, which reduces the production cost of production.

Description

technical field [0001] The invention relates to the technology in the field of power driving devices, in particular to a driving generating device and a control method used in a sonic facial cleansing brush. Background technique [0002] At present, the sonic facial cleansing brush is favored by the majority of consumers, and it has a good effect of cleaning and caring for the face. The sonic facial cleansing brush on the market generally uses cross-arm shrapnel to swing to drive its brush head. [0003] This kind of cross-arm spring structure is fixed by two elastic steel sheets on two fixed supports, one of which is fixed on the plastic cover or bottom cover, and the other end is connected to a magnet fixed seat. There are two magnet blocks on both sides of the fixed seat. The swing shaft is connected to the fixed block of the magnet. The swing shaft has a brush head. When the electromagnet works through the control circuit, the magnetic force generated by the electromagne...

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Problems solved by technology

[0003] This kind of cross-arm type spring structure is fixed by two elastic steel sheets crossed on two fixed supports, one of which is fixed on the plastic cover or bottom cover, and the other end is connected to a magnet fixed seat. There are two magnet blocks on both sides of the fixed seat. The swing shaft is connected to the fixed block of the magnet. The swing shaft has a brush head. When the electromagnet works through the control circuit, the magnetic force generated by the electromagnet and the permanent magnet attract and repel each other. To drive the brush head to swing, because the two shrapnels on the fixed seat are intersected, which can slow down the force of suction and repulsion, and reduce the efficiency of electromagnetic field swing. At the same time, this structure is more complicated and difficult to manufacture. Make the product cost high and the conversion efficiency of electromagnetic sound wave is low

[0004] In addition, the electromagnets used in facial cleansing brushes currently on the market are usually E-shaped electromagnets. When making them, they are first stacked with a number of punched and formed E-shaped silicon steel sheets to form an E-shaped silicon steel sheet core, and then the iron core Externally wound coils, the entire process is complicated and the production cost is high, which is not conducive to reducing the cost of facial cleansing brushes

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