Closing cylinder, especially for vehicles

Abstract

The invention relates to a closing cylinder comprised of a cylinder core ( ) which is rotationally accommodated in a cylinder housing ( ), and which has a profiled axial boring ( ). An axially parallel roll body ( ) is arranged in said closing cylinder and is always guided with a partial cross-section ( ) in a radial opening ( ) of the cylinder core. According to whether an initial position of rotation or a key rotation exists, the blocking element ( ) either runs into an inner groove ( ) of the cylinder housing ( ) or into a marginal recess ( ) of a group of rotating discs ( ) which are arranged in a profiled axial boring ( ) of the cylinder core ( ). In order to increase the useful life of the closing cylinder, the invention provides that a spring element ( ) is arranged at least between one of the rotating discs ( ) and the cylinder core ( ). The spring load resulting therefrom blocks, via a blocking surface provided on the rotating disc ( ), the blocking element ( ) in the cylinder housing ( ) in a manner which prevents rotation. The cylinder core ( ) comprises, with the axial section thereof serving to accommodate the rotating discs ( ), a radial recess ( ) for the spring element, and the recess ( ) is connected via a radial slot ( ) to the axial boring ( ) of the cylinder core ( ) which accommodates the rotating discs ( ).