Patent attributes
An opening device for a door lock is provided. The opening device includes a driver rigidly connected to an inside handle; an inside shaft designed to rotate an internal latching mechanism of the door lock, the inside shaft having a follower and a through cavity; a first gear engaged rotationally to the driver; an outside shaft designed to be rotated by an outside handle, the outside shaft including a cylindrical part disposed inside the through cavity of the inside shaft, a polyhedral part engaged with the outside handle, and a gear seat located at end of the cylindrical part and outside of the inside shaft; a second gear slidable along the gear seat; an engagement mechanism causing the first gear and the second gear to be engaged, thereby causing the driver to engage the follower, which causes the inside shaft to rotate in response to rotation of the outside shaft.
