US 12,011,809 B2
Power tool and safety control circuit module and safety control method thereof
Cheng-en Tsai, Taichung (TW); Chun-min Shih, Taichung (TW); and Chong-kun Hung, Taichung (TW)
Assigned to BASSO INDUSTRY CORP., Taichung (TW)
Filed by BASSO INDUSTRY CORP., Taichung (TW)
Filed on Feb. 22, 2022, as Appl. No. 17/652,064.
Claims priority of application No. 110112010 (TW), filed on Mar. 31, 2021.
Prior Publication US 2022/0314407 A1, Oct. 6, 2022
Int. Cl. B23Q 11/00 (2006.01); B25B 23/147 (2006.01); B25D 16/00 (2006.01); H02K 7/14 (2006.01); H02K 11/21 (2016.01); H02K 11/33 (2016.01)
CPC B25B 23/147 (2013.01) [B23Q 11/0085 (2013.01); B25D 16/006 (2013.01); H02K 7/145 (2013.01); H02K 11/21 (2016.01); H02K 11/33 (2016.01); B25D 2216/0084 (2013.01); B25D 2250/195 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A power tool, comprising:
a power supply device;
a control processing device electrically connected to the power supply device and comprising a first switch signal output pin, a second switch signal output pin, third switch signal output pin, and an examination signal input pin,
wherein a first switch signal, a second switch signal, and a third switch signal are respectively outputted from the control processing device by the first switch signal output pin, the second switch signal output pin, and the third switch signal output pin;
a safety control circuit module comprising
a first switch control circuit electrically connected to the first switch signal output pin;
a second switch control circuit electrically connected to the second switch signal output pin and the first switch control circuit;
a third switch control circuit electrically connected to the third switch signal output pin and the second switch control circuit;
a first resistor electrically connected to the power supply device; and
a first diode electrically connected to the examination signal input pin and the first resistor; and
a power output device comprising:
a first power connection terminal electrically connected to the first switch control circuit, the first diode, and the second switch control circuit; and
a second power connection terminal electrically connected to the third switch control circuit.