Rotational device for a vehicle seat, and vehicle seat
View Patent ↗A rotational device ( 10 ) for a vehicle seat includes a base element ( 20 ) and a seat part support ( 30 ) which can be rotated about a rotational axis (S) with respect to the base element ( 20 ). The rotational device ( 10 ) can be moved from a base position into a rotated position by rotating the seat part support ( 30 ) with respect to the base element ( 20 ). A catch hook ( 37 ) is provided on the base element ( 20 ) and/or on the seat part support ( 30 ). The catch hook protrudes in the radial direction over the base element ( 20 ) and/or over the seat part support ( 30 ).
1. A rotational device for a vehicle seat, the rotational device comprising:
a base component;
a seat part support which is rotatable about a rotation axis relative to the base component, said rotational device being rotatable from a basic position to a rotated position by a rotation of the seat part support relative to the base component; and
a catch hook on at least one of the base component or on the seat part support, said catch hook protruding radially relative to the rotation axis beyond the base component and the seat part support, said catch hook engages around the base component and the seat part support when said rotational device is in the basic position.
2. The rotational device as claimed in claim 1 , wherein the catch hook comprises an upper limb, a lower limb and a base portion, said base portion connecting the upper limb to the lower limb.
3. The rotational device as claimed in claim 2 , wherein the catch hook is U-shaped, with the lower limb extending parallel to the upper limb, and with the base portion extending perpendicularly with respect to the lower limb and perpendicularly with respect to the upper limb.
4. The rotational device as claimed in claim 2 , further comprising a slide element mounted on the lower limb.
5. The rotational device as claimed in claim 4 , wherein the slide element is made of plastic.
6. The rotational device as claimed in claim 4 , wherein the slide element has beveled side faces.
7. The rotational device as claimed in claim 4 , wherein, with the rotational device located in the basic position, the slide element is located between the lower limb and the base component.
8. The rotational device as claimed in claim 2 , wherein the upper limb is secured on the seat part support.
9. The rotational device as claimed in claim 1 , further comprising at least three roller bearings for a rotatable bearing of the seat part support.
10. The rotational device as claimed in claim 9 , wherein the seat part support is shaped like a plate, a first roller bearing, of the at least three roller bearings, being arranged on a flat face of the seat part support, and a second roller bearing, of the at least three roller bearings, and a third roller bearing, of the at least three roller bearings, being arranged on the opposite flat face of the seat part support.
11. The rotational device as claimed in claim 10 , wherein the first roller bearing extends at a first bearing distance circularly around the rotation axis, and the second roller bearing extends at a second bearing distance circularly around the rotation axis, and the third roller bearing extends at a third bearing distance circularly around the rotation axis.
12. The rotational device as claimed in claim 11 , wherein the first bearing distance is smaller than the second bearing distance, and the first bearing distance is larger than the third bearing distance.
13. The rotational device as claimed in claim 9 , further comprising a locking disk rigidly connected to the base component.
14. The rotational device as claimed in claim 1 , wherein:
said catch hook and said seat part support are arranged for said catch hook to engage around said base component and said seat part support when said rotational device is within 30° from the basic position.
15. A vehicle seat, comprising at least one rotational device comprising:
a base component;
a seat part support which is rotatable about a rotation axis relative to the base component, said rotational device being rotatable from a basic position to a rotated position by a rotation of the seat part support relative to the base component; and
a catch hook at least one of on the base component and/or on the seat part support, said catch hook protruding radially relative to the rotation axis beyond the base component and the seat part support, said catch hook engages around the base component and the seat part support when said rotational device is in the basic position.
16. The rotational device as claimed in claim 15 , wherein the catch hook comprises an upper limb, a lower limb and a base portion, said base portion, connecting the upper limb to the lower limb.
17. The rotational device as claimed in claim 16 , wherein the catch hook is U-shaped, with the lower limb extending parallel to the upper limb, and with the base portion extending perpendicularly with respect to the lower limb and perpendicularly with respect to the upper limb.
18. The rotational device as claimed in claim 16 , further comprising a slide element mounted on the lower limb.
19. The rotational device as claimed in claim 15 , further comprising at least three roller bearings for a rotatable bearing of the seat part support, wherein the seat part support is shaped like a plate, a first roller bearing, of the at least three roller bearings, being arranged on a flat face of the seat part support, and a second roller bearing, of the at least three roller bearings, and a third roller bearing, of the at least three roller bearings, being arranged on the opposite flat face of the seat part support.
20. The rotational device as claimed in claim 15 , wherein:
said catch hook and said seat part support are arranged for said catch hook to engage around said base component and said seat part support when said rotational device is within 30° from the basic position.