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An adjustment mechanism of a device for coupling a flap to a wing of an aerofoil and for adjusting the flap. The adjustment mechanism includes: a first lever, hinged to the wing via a first rotational joint to form a first axis of rotation; a second lever; a third lever, hingedly coupled to the seco

An adjustment mechanism of a device for coupling a flap to a wing of an aerofoil and for adjusting the flap. The adjustment mechanism includes: a first lever, hinged to the wing via a first rotational joint to form a first axis of rotation; a second lever; a third lever, hingedly coupled to the second lever via a second rotational joint to form a second axis of rotation and hingedly coupled to the flap via a fourth rotational joint; and a push-pull rod, which is connected via a first ball joint to the second lever and via a second ball joint to the flap. The first lever and the second lever are hingedly coupled to one another via a middle joint to form a third axis of rotation. The first, second and third axes of rotation in each position of the flap run through a common pole.

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1. An adjusting mechanism of an adjusting device for coupling an adjustable flap to a main wing of a wing and for adjusting the adjustable flap, the adjusting mechanism comprising: a first adjusting lever linked to the main wing via a first rotary joint so as to establish a first axis of rotation,a

1. An adjusting mechanism of an adjusting device for coupling an adjustable flap to a main wing of a wing and for adjusting the adjustable flap, the adjusting mechanism comprising: a first adjusting lever linked to the main wing via a first rotary joint so as to establish a first axis of rotation,a second adjusting lever,a third adjusting lever coupled in an articulated manner to the second adjusting lever via a second rotary joint so as to establish a second axis of rotation and coupled in an articulated manner to the adjustable flap via a fourth rotary joint, wherein the first adjusting lever and the second adjusting lever are coupled to each other in an articulated manner via a central joint so as to establish a third axis of rotation, and wherein the first, second and third axes of rotation pass through a common pole in every position of the adjustable flap,a pull-push rod connected to the second adjusting lever via a first ball joint and connected to the adjustable flap via a second ball joint. 2. The adjusting mechanism according to claim 1, wherein the fourth rotary joint has the form of a spherical rotary joint. 3. The adjusting mechanism according to claim 1, wherein the hinge joint of the fourth rotary joint is executed as a locating bearing with regard to the reception of forces on the adjustable flap that are directed in the span-wise direction of the adjustable flap. 4. The adjusting mechanism according to claim 3, wherein the fourth rotary joint is executed as a hinge joint. 5. An adjusting device for adjusting an adjustable flap on a wing of an aircraft, comprising at least two adjusting mechanisms arranged side by side in the span-wise direction of the wing and a drive device for adjusting the adjustable flap is arranged movably relative to the main wing, wherein at least one of the adjusting mechanisms comprises: a first adjusting lever linked to the main wing via a first rotary joint so as to establish a first axis of rotation,a second adjusting lever,a third adjusting lever coupled to the second adjusting lever in an articulated manner via a second rotary joint so as to establish a second axis of rotation and coupled to the adjustable flap in an articulated manner via a fourth rotary joint, wherein the first adjusting lever and the second adjusting lever are coupled to each other in an articulated manner via a central joint so as to establish a third axis of rotation, and wherein the first, second and third axes of rotation pass through a common pole in every position of the adjustable flap,a pull-push rod connected to the second adjusting lever via a first ball joint and connected to the adjustable flap via a second ball joint. 6. The adjusting device according to claim 5, wherein the fourth rotary joint of the adjusting mechanism has the form of a hinge joint in order to reduce the number of degrees of freedom of the mount of the adjustable flap. 7. The adjusting device according to claim 5, wherein the fourth rotary joint of the adjusting mechanism has the form of a spherical rotary joint in order to increase the number of degrees of freedom of the mount of the adjustable flap. 8. The adjusting device according to claim 5, wherein another one of the adjusting mechanisms comprises: a first adjusting lever linked to the main wing via a first rotary joint so as to establish a first axis of rotation,a second adjusting lever linked to the adjustable flap via a second rotary joint so as to establish a second axis of rotation, wherein the first and the second adjusting lever are connected to each other in an articulated manner via a central joint so as to establish a third axis of rotation, and wherein the first, second and third axes of rotation pass through a common pole in every position of the adjustable flap. 9. The adjusting device according to claim 5, wherein said adjustable flap is a leading edge flap. 10. The adjusting device according to claim 9, wherein said leading edge flap is a Krueger flap which, in its retracted position, is situated on the lower side of the main wing. 11. The adjusting device according to claim 9, wherein said leading edge flap is a slat. 12. The adjusting device according to claim 5, wherein said adjustable flap is a trailing edge flap. 13. The adjusting device according to claim 5, wherein said drive device is constituted by a linear drive. 14. The adjusting device according to claim 5, wherein the drive device is constituted by a rotary drive. 15. The adjusting device according to claim 5, wherein the wing comprises a stop device for limiting the maximum extended position of the adjustable flap, and the stop device is formed to comprise a stop lever acting between the first and the second adjusting lever, which is formed integrally with the first adjusting lever or with the second adjusting lever and as a prolongation thereof in the direction toward the second axis or toward the first axis, and which is configured such that the free end of the stop lever may be taken to a position of abutment against a support device on the second adjusting lever or on the first adjusting lever, to thereby define the maximum extended position of the respective adjusting mechanism. 16. The adjusting device according to claim 5, wherein the wing comprises a stop device for limiting the maximum extended position of the adjustable flap, and the stop device is formed to comprise a stop lever for limiting the maximum extended position of the adjustable flap which is formed integrally with the first adjusting lever or with an armature of the main wing and as a prolongation thereof in the direction toward the armature of the main wing or toward the third joint, and which is configured such that the free end of the stop lever may be taken to a position of abutment against the armature of the main wing or the first adjusting lever to thereby define the maximum extended position of the respective adjusting mechanism. 17. The adjusting device according to claim 5, wherein the wing comprises a stop device for limiting the maximum extended position of the adjustable flap, and the stop device is formed to comprise a stop lever for limiting the maximum extended position of the adjustable flap which is formed integrally with the second adjusting lever or with an armature of the adjustable flap and as a prolongation thereof in the direction toward the armature of the adjustable flap or toward the third joint, and which is configured such that the free end of the stop lever may be taken to a position of abutment against the armature of the adjustable flap or the second adjusting lever, to thereby define the maximum extended position of the respective adjusting mechanism.