A cylinder lock arrangement having a cylindrical housing attached to a door and a lock cylinder with lever tumblers provided to cooperate with a lock device, whereby the lock device is arranged to be actuated via a carrier provided to the cylinder lock, comprising:
- a connection device for transmission of force from the lock cylinder to the carrier having a carrier friction means on the opposite side of the carrier in relation to the lock cylinder and provided to be axially displaced in relation to the lock cylinder from a neutral position and in direction towards the carrier during rotation of the lock cylinder with a fitting key,
- wherein the connection device is provided to be brought to an active position in friction engagement with the carrier not until after said axial displacement from the neutral position, after which locking and unlocking respectively of the lock device is performed by further rotation of the lock cylinder by means of the fitting key,
- wherein the lock cylinder has an inner non-circular end portion provided in fixed engagement with a corresponding recess on the connection device whereby it is carried along at rotation of the lock cylinder,
- wherein the end of the connection device which is provided with said recess has a first cylindrical portion provided inside the disengagement sleeve and extending beyond this in direction from the lock cylinder a distance which is at least as long as said axial displacement from the neutral position to the active position,
- further wherein the connection device during return movement of the fitting key is provided to be brought back in axial direction to the neutral position, wherein the connection device is disengaged from the carrier,
- wherein the carrier is provided on the cylindrical housing at one of the inner ends thereof,
- a disengagement sleeve provided with recesses intended to receive portions of the respective lever tumblers and is arranged around the lock cylinder and inside the cylindrical housing,
- wherein the disengagement sleeve and the cylindrical housing are interconnected by means of a friction connection arranged to arrest the disengagement sleeve in relation to the cylindrical housing at torques that occur during switching of the lock device from closed to open position and vice versa via the carrier when the fitting key is inserted into the lock cylinder and the lever, tumblers are disengaged from said recesses on the disengagement sleeve, and which is provided, to permit rotation of the disengagement sleeve together with the lock cylinder in this state is brought to rotate,
- wherein the connection device is provided to stay in the neutral position when the disengagement sleeve is carried in rotation by the rotation of the lock cylinder, whereby unlocking of the lock device is prevented,
- wherein a collar is provided on the end of the connection device opposite in relation to the recess, said collar being situated on the opposite side of the carrier in relation to the lock cylinder and having a collar friction means on the side facing the carrier,
- wherein the collar in the neutral position of the connection device is situated at a distance from the carrier and is intended to be brought in engagement with its collar friction means with said corresponding carrier friction means after said axial displacement of the connection device from the neutral position to the active position,
- wherein the first cylindrical portion of the connection device has at least two grooves extending along the periphery of the connection device, one for locking and one for unlocking, said grooves cooperating with at least one peg attached to the disengagement sleeve, said peg in engagement with the grooves,
- a first groove portion of the respective grooves extends from a common end position of the grooves on the connection device near the end provided with a recess obliquely over the connection device in direction toward the second end thereof and wherein the respective groove changes into a second groove portion perpendicular to the longitudinal axis of the connection device, whereby the connection device, during rotation of the lock cylinder with the fitting key inside the disengagement sleeve, is axially displaced when said peg runs in the first groove portion of the respective grooves,
- wherein an axial extension of the first groove portion corresponds to the distance from the collar friction means to the carrier friction means in the neutral position of the connection device, and
- whereby the connection device is displaced from the neutral position to an active position when the peg on the disengagement sleeve runs from the end position of the first groove portion to the second groove portion and whereby the carrier at further rotation of the lock cylinder with the peg running through the second groove portion is carried along for locking and unlocking respectively of the locking device.