Camshaft, especially for an internal combustion engine of a motor vehicle, comprising shiftable cams

A camshaft of an internal combustion engine of a motor vehicle in which

• at least one cam comprises cam segments that are mutually adjustable in a controlled manner radially to the camshaft axis, namely a first and a second cam segment (2, 3),
• the two cam segments (2, 3) have functional, shiftable cam profile regions that are separately activatable,
• the first cam segment (2) is designed as a component of a base body (1) which is immovable with respect to a rotatable base body (1) of the camshaft,
• the second cam segment (3) is designed to be adjustable with respect to the first cam segment (1),
• the second cam segment (3) encloses the camshaft base body (1) it in a horseshoe shape and is mounted to be radially displaceable with respect to the camshaft axis,
• the second cam segment (3) is temporarily lockable in at least two positions which are different distances apart from the camshaft axis radially by means of shiftable attachment means (6, 5), namely in a first and a second deployment position,
• wherein
• the second cam segment (3) in its radially deployed position with the ends of its U-shaped legs (resulting from its horseshoe shape) being adjacent completely to areas of the outside contour of the camshaft base body situated between the U legs, whereby the U legs end extend freely at their ends.