高、低压开关中使触头按规定的要求完成分断、接通电路的机械装置。开关机构由操动机构、锁扣机构、脱扣动力装置和自由脱扣机构等组成。
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开关机构包括杯盖杠杆及位于其上的密封柱。
The switch mechanism comprises a cup lid lever and a sealing column positioned on the cup lid lever.
本实用新型涉及一种自动开关保温壶塞，它由壶盖、壶塞及自动开关机构组成。
The utility model relates to a thermal insulation kettle cork with automatic opening and closing, comprising a kettle cover, a kettle cork and an automatic opening and closing mechanism.
在该加速期间结束时，以占空比与速度指令数据对应的PW M脉冲来控制开关机构，从而驱动该直流马达。
When the acceleration period has terminated, the switch means is controlled by a PWM pulse of the duty ratio in accordance with the speed instruction data, there by driving the DC motor.
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