Patent ID: 11965360
Assignee: ASSA ABLOY AB
Field: Civil engineering (Other fields)
Classification: CPC E  H | IPC E  H

Claim 0:
1. A lock device for an electronic locking system, the lock device comprising:
an input member arranged to rotate about an input rotational axis;
an output member arranged to rotate about an output rotational axis;
an energy harvesting arrangement configured to generate electric energy from rotation of the input member in a first direction about the input rotational axis; and
a selective transfer device movable between a locking state, in which the output member cannot be rotated about the output rotational axis by means of rotation of the input member about the input rotational axis, and an unlocking state, in which the output member can be rotated about the output rotational axis by means of rotation of the input member in the first direction about the input rotational axis;
wherein the transfer device is powered by the energy harvesting arrangement; and
wherein the energy harvesting arrangement comprises:
an electric generator;
a drive member displaceable, by rotation of the input member, from a starting position to a releasing position, the drive member arranged to drive the electric generator by at least displacement of the drive member from the starting position to the releasing position;

an elastic element arranged to store mechanical energy from the displacement of the drive member from the starting position to the releasing position; and
a release mechanism arranged to release mechanical energy stored in the elastic element to a returning displacement of the drive member when the drive member reaches the releasing position.