Electronic device and secure switch module thereof
View Patent ↗A secure switch module to allow only authorized keyholders to power on an electronic device includes a lock, a key matching the lock, and a power switch. The lock includes a first lock pin electrically connected to a ground pin of a motherboard of the electronic device, and a second lock pin. The power switch includes a button, a first elastic conductive sheet electrically connected to the second lock pin, and a second elastic conductive sheet electrically connected to a power on pin of the motherboard. When the key is engaged with the lock and the button is pressed, the first lock pin is electrically connected to the second lock pin, the first elastic conductive sheet is electrically connected to the second elastic conductive sheet, the power on pin receives a low level signal, and the electronic device is turned on.
1. A secure switch module for turning on an electronic device, the electronic device comprising a chassis and a motherboard received in the chassis, the motherboard comprising a power on pin and a ground pin grounded, the secure switch module comprising:
a lock secured to the chassis and comprising a core, a keyhole defined in the core, a first lock pin electrically connected to the ground pin, and a second lock pin;
a key matching the lock; and
a power switch secured to the chassis and comprising a first button, a first elastic conductive sheet electrically connected to the second lock pin, and a second elastic conductive sheet electrically connected to the power on pin;
wherein when the key is inserted into the keyhole and rotated, the core is rotated along with the key to make the first lock pin electrically connect to the second lock pin; when the first lock pin is electrically connected to the second lock pin and the first button is pressed, the first elastic conductive sheet is electrically connected to the second elastic conductive sheet, the second elastic conductive sheet is grounded through the first elastic conductive sheet, the second lock pin, the first lock pin, and the ground pin in that order, the power on pin receives a low level signal from the second elastic conductive sheet, and the electronic device is turned on.
2. The secure switch module of claim 1 , further comprising a reset switch secured to the chassis, wherein the reset switch comprises a second button, a third elastic conductive sheet electrically connected to the second lock pin, and a fourth elastic conductive sheet electrically connected to a reset pin of the motherboard, when the first lock pin is electrically connected to the second lock pin and when the second button is pressed, the third elastic conductive sheet is electrically connected to the fourth elastic conductive sheet, the fourth elastic conductive sheet is grounded through the third elastic conductive sheet, the second lock pin, the first lock pin, and the ground pin in that order, the reset pin receives a low level signal from the fourth elastic conductive sheet, and the electronic device is restarted.
3. An electronic device comprising:
a chassis;
a motherboard received in the chassis and comprising a power on pin and a ground pin grounded; and
a secure switch module comprising:
a lock secured to the chassis and comprising a core, a keyhole defined in the core, a first lock pin electrically connected to the ground pin, and a second lock pin;
a key matching the lock; and
a power switch secured to the chassis and comprising a first button, a first elastic conductive sheet electrically connected to the second lock pin, and a second elastic conductive sheet electrically connected to the power on pin;
wherein when the key is inserted into the keyhole and rotated, the core is rotated along with the key to make the first lock pin electrically connect to the second lock pin; when the first lock pin is electrically connected to the second lock pin and the first button is pressed, the first elastic conductive sheet is electrically connected to the second elastic conductive sheet, the second elastic conductive sheet is grounded through the first elastic conductive sheet, the second lock pin, the first lock pin, and the ground pin in that order, the power on pin receives a low level signal from the second elastic conductive sheet, and the electronic device is turned on.
4. The electronic device of claim 3 , wherein the motherboard further comprises a reset pin, the secure switch module further comprises a reset switch secured to the chassis, the reset switch comprises a second button, a third elastic conductive sheet electrically connected to the second lock pin, and a fourth elastic conductive sheet electrically connected to the reset pin, when the first lock pin is electrically connected to the second lock pin and the second button is pressed, the third elastic conductive sheet is electrically connected to the fourth elastic conductive sheet, the fourth elastic conductive sheet is grounded through the third elastic conductive sheet, the second lock pin, the first lock pin, and the ground pin in that order, the reset pin receives a low level signal from the fourth elastic conductive sheet, and the electronic device is restarted.