Cylinder lock

A cylinder lock, comprising a body and, inside it, an inner cylinder unit provided with an inner cylinder, a tumbler and electric means, which electric means allow the tumbler to be guided from a locking position into an opening position, the tumbler preventing the turning of the inner cylinder with respect to the body in the locking position and allowing the inner cylinder to be turned with respect to the body in the opening position, the inner cylinder having a channel inside it,

• the cylinder lock comprising a generator for generating electricity to the cylinder lock from the movement of a key inserted in the cylinder lock, the electricity generated being used to identify the key, and the electricity generated also being used in the electric means if opening the cylinder lock is allowed on the basis of the identification of the key, wherein
• the cylinder lock comprises, in connection with the generator, a generator shaft system, a channel axis and transmission parts from the channel axis to the generator, and a key channel module with a key channel and an opening from its side surface into the key channel, the key channel and the channel inside the inner cylinder forming a joint channel, in which key channel module opening is positioned a part of the channel axis, which extends into the key channel, and which channel axis comprises a gearwheel which is in the key channel and arranged to rotate by the movement of the key inserted in the cylinder lock,
• the generator shaft system, the channel axis, the transmission parts and the key channel module being in connection with the inner cylinder such that they are arranged to turn with the inner cylinder,
• and the cylinder lock comprises a circuit board provided with a memory for identifying the key, and also for conveying the electricity generated to the electric means if opening the cylinder lock is allowed on the basis of the identification of the key,
• and which cylinder lock comprises at least one protective cover, between which protective cover and the key channel module are located the channel axis, the transmission parts, the generator shaft system and the generator.