Camshaft adjusting device

A camshaft adjusting device including -a vane cell adjuster and -a central locking device (26) for locking the rotor (17) with respect to the stator (16), wherein -at least one first valve functional pin (46) is provided in the rotor hub (30), and the working chambers (20, 21, 22, 23) with different directions of action can be fluidically connected to one another via said valve functional pin, -in a first switch position, the first valve functional pin (46) fluidically connects at least two first working chambers (20, 21) with different directions of action to each other via a non-return valve (9, 10) during a movement from the direction "early" or "late" into the central locking position, -in a second switch position, the first valve function pin (46) fluidically separates the at least two first working chambers (20, 21) with different directions of action, -a bridging line (50) is provided for a fluid-free connection of the two first working chambers (20, 21), and -the bridging line (50) can be switched by a valve pin (45).