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1. (WO2018098838) ELECTRICAL APPLIANCE FOR CLEANING AND PROVIDING CARE, PRESSURE ALARMING METHOD USING THE APPLIANCE, AND PRESSURE ALARMING APPARATUS

Pub. No.:    WO/2018/098838    International Application No.:    PCT/CN2016/108884
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Thu Dec 08 00:59:59 CET 2016
IPC: A61C 17/34
A61C 17/26
Applicants: SHANGHAI SHIFT ELECTRICS CO., LTD.
上海携福电器有限公司
Inventors: DAI, Xiaoguo
戴晓国
XU, Zhenwu
徐振武
Title: ELECTRICAL APPLIANCE FOR CLEANING AND PROVIDING CARE, PRESSURE ALARMING METHOD USING THE APPLIANCE, AND PRESSURE ALARMING APPARATUS
Abstract:
An electrical appliance for cleaning and providing care, a pressure alarming method using the appliance, and a pressure alarming apparatus. Transducer elastic members (222, 223) of the appliance engage in harmonic motion with bending strain characteristics and are symmetrically distributed at the left and right sides of the longitudinal axis (L2) of a drive shaft, the section moduli in bending and the lengths thereof being approximately equal, the deflection amplitudes being approximately equal while the flexure directions are opposite, the included angle between the longitudinal axis (L1) of a cleaning member and the normal of the transducer elastic member plane (M) being 0°-60°; the frequency of the alternating current in a drive coil (214) is equal to the fixed value of f0max-n, where n is a certain fixed value in the range of -0.3(f0max-f0min) to 0.85(f0max-f0min), and f0max is the current frequency of the drive coil (214) corresponding to the maximum value of the average voltage of a current sensing resistor, and f0min is the current frequency of the drive coil (214) corresponding to the minimum value of the average voltage of the current sensing resistor; therefore, the care appliance has a higher mechanical efficiency, a simple structure and a lower cost.