Rotary damper

A rotary damper, comprising:

• a housing, a damper shaft rotatably mounted relative to said housing, magnetorheological fluid accommodated in a damper volume in said housing, and a magnetic field source for influencing a damping of a rotational movement of said damper shaft relative to said housing
• at least one separating unit connected to said damper shaft and dividing said damper volume, said at least one separating unit and said housing forming at least one gap section therebetween to be exposed to a magnetic field of said at least one magnetic field source;
• said housing, said separating unit, and said magnetic field source being formed such that a flow cross section for the magnetorheological fluid from one side of said separating unit to an opposite side of said separating unit changes in dependence on an angle of rotation.

The rotary damper according to claim 44, wherein said magnetic field source comprises at least one controllable electrical coil configured to influence a strength of the magnetic field and an intensity of a damping action, and wherein at least a major part of the magnetic field of said magnetic field source passes through at least two of said gap sections and influences said at least two gap sections simultaneously in dependence on the strength of the magnetic field.