To provide an opening-closing body such as a window and a door of a building, capable of informing an illicit opening-closing state of the opening-closing body to an external part by communication without using an external power source by installing a lock device such as a crescent lock.
This lock device can freely lock and unlock the opening-closing body such as the window and the door of the building, and comprises a self-power generable module. The module is constituted so as to operate for power generation by vibrating the module by releasing engagement with the lock device when a locking rotary body of the lock device arranged in one opening-closing body, is arranged in the other opening-closing body, and an engaging state with a locking body engaging with the locking rotary body of the lock device is released.
TOKIMATSU YASUKAZU
KONOSHIMA TERUO
KAJIKI TSUTOMU
SHIN NIKKEI CO LTD