US Patent 10480222 Door latching device and moving body mounted with same

A door latching device includes a latch motor connection switch, a converter line which includes a converter power supply, a latch motor and a latch. The latch motor connection switch has an input side connected with the converter line, and an output side connected with the latch motor. The latch is caused to perform an opening operation when the latch motor is driven. Based on an instruction for causing the latch to perform the opening operation, the latch motor connection switch is closed, and the converter power supply is activated to step up an input voltage to the converter power supply and output the input voltage to the latch motor connection switch.