Title:
ADJUSTABLE CIRCUIT FOR PERSONAL ELECTRIC CLEANING CARE APPLIANCE
Document Type and Number:
WIPO Patent Application WO/2017/070887
Kind Code:
A1
Abstract:
An adjustable circuit for a personal electric cleaning care appliance. A cleaning care appliance comprises a power supply portion and a driver (1), the power supply portion comprises an H-bridge circuit, the driver (1) comprises a transducer, a driving coil (2) and a driving coil iron core (3) provided in the driving coil (2), an elastic member (8, 9) and a permanent magnetic body (4, 5, 6, 7) are arranged on the transducer, a cleaning element is mounted on a driving shaft (10) of the transducer, and when an alternating current flows through the driving coil (2), the cleaning element and the transducer perform reciprocal rotational movement resonantly under the action of an electromagnetic force of the driving coil (2). An adjustable circuit comprises a microchip processor (an IC) and the H-bridge circuit; by connecting a capacitor bank and the driving coil (2) which is connected to the capacitor bank in series at a load end of the H-bridge circuit, at least some of the capacitors in the capacitor bank are controlled to be connected to the driving coil (2) in series or to be disconnected from the driving coil (2), the capacitance of the connected capacitors can be controlled, so that a current flowing through the driving coil (2) can be controllably limited to a certain value, such that a movement amplitude value of the cleaning element can be controlled and additional electromagnetic interference cannot be generated.
Inventors:
DAI XIAOGUO (CN)
XU ZHENWU (CN)
DAI LING (CN)
XU ZHENWU (CN)
DAI LING (CN)
Application Number:
PCT/CN2015/093181
Publication Date:
May 04, 2017
Filing Date:
October 29, 2015
Export Citation:
Assignee:
SHANGHAI SHIFT ELECTRICS CO LTD (CN)
International Classes:
H02P25/06
Foreign References:
| CN104617732A | 2015-05-13 | |||
| CN104617704A | 2015-05-13 | |||
| CN104868608A | 2015-08-26 | |||
| CN105227036A | 2016-01-06 | |||
| CN205160423U | 2016-04-13 | |||
| US20090046482A1 | 2009-02-19 | |||
| US6002256A | 1999-12-14 |
Other References:
See also references of EP 3370338A4
Attorney, Agent or Firm:
WAN HUI DA INTELLECTUAL PROPERTY AGENCY (CN)
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