Control device to reduce vibration movement on a device vibrating under spring force

1. A control device to reduce a vibration movement ( 15 ) on a device ( 1 ) vibrating under spring force with at least two mobile parts ( 3 , 4 ) vibrating in relation to each other, wherein the parts ( 3 , 4 ) are connected together by means of mobile connecting arms ( 5 , 6 ), at least one of the connecting arms ( 6 ) is connected at least indirectly with a first spring element end ( 16 a ) of at least one spring element ( 16 ) and between the parts ( 3 , 4 ) is arranged at least one damping element ( 13 ), characterised in that at least one link track element ( 18 ), in or on which under a vibration movement ( 15 ) a guide element ( 24 ) connected with the first spring element end ( 16 a ) and in contact with the first connecting arm ( 6 ) is arranged mobile on a link track ( 19 a - d ), wherein a movement course of the guide element ( 24 ) can be modified by position-changeable curve elements ( 20 , 21 ) to deviate at least in part from the curve of the link track ( 19 a - 19 d ).

2. The control device according to claim 1 , characterised in that the curve elements ( 20 , 21 ) are connected with the damping element ( 13 ) and can be positioned differently ( 28 , 29 ) in dependency of the momentary size of a damping force of the damping element ( 13 ) which depends on a momentary vibration speed of the two mobile parts ( 3 , 4 ) vibrating in relation to each other.

3. The control device according to claim 2 , characterised in that the curve elements ( 20 , 21 ) can swivel about a swivel axis ( 22 , 23 ), wherein the curve elements ( 20 , 21 ) have curve section tracks ( 20 a , 21 a ) along which the guide element ( 24 ) can be guided deviating from the course of the link track ( 19 a - d ).

4. The control device according to claim 3 , characterised in that the damping element ( 13 ) has at least one extendable piston rod ( 14 ), on the end ( 13 a ) of which are attached at least two rod elements ( 26 , 27 ) that are connected with the at least two swivelable curve elements ( 20 , 21 ), wherein the swivel position ( 28 , 29 ) of the curve elements ( 20 , 21 ) can be adjusted by extension and retraction of the piston rod ( 14 ).

5. The control device according to claim 3 or 4 , characterised in that the curve elements ( 20 , 21 ) are subject to resistance in their swivel movement ( 28 , 29 ) from a swivel adjustment force.

6. The control device according to claim 5 , characterised in that the changing damping force of the damping element ( 13 ) is less than, equal to or greater than the swivel adjustment force.

7. The control device according to claim 6 , characterised in that the link track ( 19 a - d ) reflects at least part of a course of a force-travel vibration springing curve ( 44 , 70 - 72 , 75 - 77 ).

8. The control device according to claim 7 , characterised in that the course of the vibration springing curve ( 44 , 70 - 72 , 75 - 77 ) has a first region ( 41 ) with a slight first gradient and for higher vibration speeds a second and third region ( 42 , 43 ) arranged in the springing end position zones with a second and third gradient steeper than the first gradient.

9. The control device according to claim 8 , characterised in that the second region ( 42 ) and the third region ( 43 ), on a vibration movement ( 15 ) in the direction ( 73 , 78 ) of the springing end positions, have at least partly a shallower gradient ( 70 , 75 ) than on the opposite vibration movement ( 74 , 79 ).

10. The control device according to claim 7 , characterised in that the course of the vibration springing curve ( 44 , 50 , 53 ) at low vibration speeds has the same gradient both in a first region ( 41 ) lying between the springing end position zones and in a second region ( 42 ) and third region ( 43 ) also lying in one of the springing end position zones.

11. The control device according to claim 1 , characterised in that the spring element ( 16 ) in the region of the upper part ( 3 ) in relation to the other part ( 4 ) is arranged running almost horizontal and by the first end ( 16 a ) is connected with the guide element ( 24 ) and indirectly with the first end ( 6 a ) of the connecting arm ( 6 ) and by the second end ( 16 b ) with the top part ( 3 ).

12. The control device according to claim 1 , characterised in that it is intended for a vehicle seat with a seat part on the top as a first part ( 3 ) and with a seat frame lower part underneath as the second part ( 4 ).