Button switch with power-off protection function

• Main Authors: PAN HUALIN, WANG FANGHAI, YUAN MAN, CHEN JIJUN
• Format: Patent
• Language: English
• Published: 08.04.2015
• Subjects: BASIC ELECTRIC ELEMENTS; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; EMERGENCY PROTECTIVE DEVICES; GENERATION; RELAYS; SELECTORS

The utility model provides a button switch with a power-off protection function. The button switch comprises a button switch body. The button switch body is internally integrated with a power-off protection module. Two phases of power transmission lines are connected with a switch contact and the power-off protection module respectively; the power-off protection module is connected in parallel with the switch contact through a signal spring; the signal spring detects comparison between the input and output voltages of the switch contact through monitoring, judges whether a voltage passes through the switch contact and sends a signal to the power-off protection module; if the power-off protection module receives the signal indicating that the voltage passes through the switch contact, the power-off protection module keeps voltage transmission; and if the power-off protection module receives the signal indicating that no voltage passes through the switch contact, the power-off protection module cuts off the voltage transmission. Under the condition of not changing the appearance and size of the original button switch, the button switch is internally integrated with the power-off protection module to realize control of power-off protection.