Circuit board, for fitting into the door knob for a lock closing cylinder, is of a flexible material holding the components and battery to be wound around a body for installation in the knob hollow zone

摘要

The circuit board for installation in the hollow zone of a door knob (13), for a lock closing cylinder, is at least one board (11) of a flexible material holding the electronic and electrical components (12) and a battery (28). When installed, the circuit board is wound at least partially around an installation body (14), with dimensions to match the hollow zone with the board around it, and with a longitudinal axis parallel to the door knob rotary axis (20). The body is a sleeve, with a polygon shape, with the components lying on the flat sides.