Drive arrangement (38, 24) with: at least one drive device pivotable about a rotational axis, comprising at least one drive member and at least one holding member, wherein the at least one drive member is disposed with an offset in the radial direction to the at least one holding member, and at least one output unit rotatable or pivotable about an axis, wherein the output member comprises at least one drive recess and at least one retaining recess, wherein the at least one drive member is assigned to the at least one drive recess and engages with the at least one drive recess to drive the output member, and wherein the at least one holding member is assigned to the at least one retaining recess and engages with the at least one retaining recess to keep the output member in its set position, wherein the at least one drive member has a cross section deviating from a circular cross section and being curved at least in sections, wherein the at least one drive member has, relating to a rotational axis, compared with a circular cross section, a cross section that is reduced in the radial direction, wherein the cross section of the at least one drive member has at least a first apex (S 1) and at least a second apex (S 2), wherein their distance to each other defines the largest extension of the drive member, or wherein the cross section of the at least one drive member has at least a first edge and at least a second edge, wherein their distance to each other defines the largest extension of the drive member, characterized in that the cross section of the at least one drive member has at least a third apex (S 3) and a fourth apex (S 4), wherein their distance to each other is smaller than the distance between the first apex (S 1) or the first edge and the second apex (S 2) or the second edge. at least one drive device pivotable about a rotational axis, comprising at least one drive member and at least one holding member, wherein the at least one drive member is disposed with an offset in the radial direction to the at least one holding member, and at least one output unit rotatable or pivotable about an axis, wherein the output member comprises at least one drive recess and at least one retaining recess, wherein the at least one drive member is assigned to the at least one drive recess and engages with the at least one drive recess to drive the output member, and wherein the at least one holding member is assigned to the at least one retaining recess and engages with the at least one retaining recess to keep the output member in its set position, wherein the at least one drive member has a cross section deviating from a circular cross section and being curved at least in sections, wherein the at least one drive member has, relating to a rotational axis, compared with a circular cross section, a cross section that is reduced in the radial direction, wherein the cross section of the at least one drive member has at least a first apex (S 1) and at least a second apex (S 2), wherein their distance to each other defines the largest extension of the drive member, or wherein the cross section of the at least one drive member has at least a first edge and at least a second edge, wherein their distance to each other defines the largest extension of the drive member, characterized in that the cross section of the at least one drive member has at least a third apex (S 3) and a fourth apex (S 4), wherein their distance to each other is smaller than the distance between the first apex (S 1) or the first edge and the second apex (S 2) or the second edge.