Patent ID: 8162551
Filing Date: 2012-04-24
Classification: H01H,H02K

Abstract:
1. A keyboard comprising: a key comprising a sheet for being pressed; the sheet comprising a first sloping surface extending obliquely from the bottom of the sheet; a base comprising a sliding rail; a resilient element connecting the key to the base and configured to restore the key after the key is pressed towards the base and released; a transmission device slidablely disposed on the sliding rail and comprising a sidewall, the sidewall defining a groove in the top thereof, the groove defining a second sloping surface sloping down from the top of the sidewall, the transmission device being positioned so that during key pression, the transmission device is forced to slide on the sliding rail due to a sliding motion of the second sloping surface on the first sloping surface; and a generator meshed with the transmission device, the generator being configured for converting kinetic energy of the sliding transmission device into electrical energy.