Torque transmission device for a door drive device, comprising: - a torque transmission means adapted to transmit torque and a driving member connectible to a drive device, a driven member connectible to a component of the door, a traction means operatively connecting said driving member to said driven member and comprising a first strand and a second strand, and a traction means guide device, wherein the traction means guide device comprises a first traction means guide means and a second traction means guide means, wherein the first and the second traction means guide devices (46, 48) are movable transversely to a first main movement direction of the traction means, wherein the first and the second traction means guide means (46, 48) are connected by means of a connecting element comprising an elastic element for generating a restoring force, - a support device configured to support the traction means guide device, - a housing device configured to accommodate the torque transmission device and comprising a lateral wall, at least one portion thereof forms an inner circumferential surface, characterized in that the first and the second traction means guide means (46, 48) are connected in such a way that during torque transmission a) the strand (50, 52) of the traction means effective as load-bearing strand is moved away from the support device by the action of the torque and that the strand (50, 52) of the traction means effective as empty strand is moved relative to the portion the lateral wall transversely to the main movement direction of the traction means towards the side of the load-bearing strand, so that the empty strand is prevented from touching the portion of the lateral wall, and b) the traction means guide means (46, 48) guiding the empty strand is an empty strand guide means, the traction means guide means (46, 48) guiding the load-bearing strand is a load-bearing strand guide means, and wherein at least one section of the empty strand guide means engages the support device in order to prevent a further movement of the empty strand guide means towards the side of the load-bearing strand while the load-bearing strand guide means is spaced from the support device, wherein the restoring force effective to the side of the empty strand is produced by the connecting element on the load-bearing strand guide means as soon as the load-bearing strand is deflected from an equilibrium position. - a torque transmission means adapted to transmit torque and a driving member connectible to a drive device, a driven member connectible to a component of the door, a traction means operatively connecting said driving member to said driven member and comprising a first strand and a second strand, and a traction means guide device, wherein the traction means guide device comprises a first traction means guide means and a second traction means guide means, wherein the first and the second traction means guide devices (46, 48) are movable transversely to a first main movement direction of the traction means, wherein the first and the second traction means guide means (46, 48) are connected by means of a connecting element comprising an elastic element for generating a restoring force, - a support device configured to support the traction means guide device, - a housing device configured to accommodate the torque transmission device and comprising a lateral wall, at least one portion thereof forms an inner circumferential surface, a) the strand (50, 52) of the traction means effective as load-bearing strand is moved away from the support device by the action of the torque and that the strand (50, 52) of the traction means effective as empty strand is moved relative to the portion the lateral wall transversely to the main movement direction of the traction means towards the side of the load-bearing strand, so that the empty strand is prevented from touching the portion of the lateral wall, and b) the traction means guide means (46, 48) guiding the empty strand is an empty strand guide means, the traction means guide means (46, 48) guiding the load-bearing strand is a load-bearing strand guide means, and wherein at least one section of the empty strand guide means engages the support device in order to prevent a further movement of the empty strand guide means towards the side of the load-bearing strand while the load-bearing strand guide means is spaced from the support device, wherein the restoring force effective to the side of the empty strand is produced by the connecting element on the load-bearing strand guide means as soon as the load-bearing strand is deflected from an equilibrium position.