Hand-held electric appliance power-saving switch control mechanism
AssigneesShuo-Hung Chang, W-Link System, Inc.
InventorsShuo-Hung Chang, An-Yoil Yen
Life of this patent
Estimating the term…
Abstract
A power-saving switch control mechanism for hand-held electric appliance comprises a sensor to detect the approaching hand of user and then continuously transmit signals to activate a switch into a close-circuit status in order for a cell to supply power to a control circuit of the electric appliance. When the sensor fails to detect the hand on the electric appliance, the switch returns to an open-circuit status to stop the cell from supplying power to the control circuit and stop the operation of the electric appliance accordingly.
Claims5
A power-saving switch control mechanism for a hand-held electric appliance comprising:
- a sensor, provided on a holding portion on the hand-held electric appliance, a detection part of the sensor being exposed above a surface of the holding portion to detect an approaching object;
- a control circuit, provided in the electric appliance and containing circuitry and electronic devices required for normal operation of the electric appliance;
- a switch, connected to the control circuit and to a cell in order for the cell to supply power to the control circuit when the switch is closed and to stop supplying power to the control circuit when the switch is opened, wherein closing and opening of the switch is controlled solely by the presence or absence of activating signals from said sensor;
- and
- an amplifier connected to the switch, the sensor, and the cell for receiving and amplifying said activating signals, which are continuously transmitted from the sensor whenever the object is detected;
- wherein, when the sensor detects an approaching object, the sensor continuously transmits said activating signals to the switch and holds the switch closed, enabling the cell to supply power required by the control circuit for as long as the object is detected by the sensor;
- and when the object clears away from the electric appliance, the sensor fails to transmit signals to the switch and opens the switch to stop supplying power to the control circuit, whereby power is only supplied to said control circuit when the object is detected by the sensor.
Dependencies are inferred from the claim text.