Fitting for a vehicle seat and method for producing same
View Patent ↗A fitting for a vehicle seat, in particular for a motor vehicle seat, includes a first fitting part and a second fitting part, which are rotatable relative to one another and which are in geared connection with one another by a ring gear and a gear wheel which meshes with the ring gear. The fitting also includes a cam which is driven by a driver and revolves in the circumferential direction in order to drive a relative rolling movement of the gear wheel and the ring gear. The driver is mounted with a clearance and/or the cam is mounted on a collar of the second fitting part. The collar has a flange on the free end thereof. The end face of the flange forms an axial support surface for the driver. The flange includes a groove in the support surface.
1. A fitting for a vehicle seat, comprising:
a first fitting part and a second fitting part, which are rotatable relative to each other and which are in geared connection with each other by a toothed ring and a gear wheel meshing with the toothed ring; and
an eccentric which is driven by a driver, that revolves in the circumferential direction and is intended for driving a relative rolling movement of the gear wheel and the toothed ring, wherein at least one of the driver is mounted with play in a collar of the second fitting part and the eccentric is mounted on the collar of the second fitting part, and wherein a free end of the collar has a flange, an end side of which forms an axial supporting surface for the driver,
wherein the flange has a groove in the supporting surface.
2. The fitting as claimed in claim 1 , wherein the flange is deformed material on the free end of the collar.
3. The fitting as claimed in claim 2 , wherein the flange is at least partially radially displaced material.
4. The fitting as claimed in claim 3 , wherein the groove is an impression of a bead of a tool.
5. The fitting as claimed in claim 1 , wherein at least sections of the groove run in the circumferential direction.
6. The fitting as claimed in claim 5 , wherein the groove is formed in a continuously encircling manner and equidistantly from the inner edge of the supporting surface.
7. The fitting as claimed in claim 5 , wherein the groove is placed in the supporting surface closer to the inner edge than to the outer edge of the supporting surface.
8. The fitting as claimed in claim 1 , wherein the groove has a depth of 0.5mm +/−0.2 mm.
9. The fitting as claimed in claim 1 , wherein the supporting surface has an outside diameter of 21 mm +/−1 mm and an inside diameter of 13 mm +/−1 mm.
10. The fitting as claimed in claim 9 , wherein the groove in the form of at least partially encircling groove runs on a circle with a diameter of 16 mm +/−1 mm.
11. The fitting as claimed in claim 1 , wherein the supporting surface of the collar extends radially inward over a cylindrical inner surface of the collar.
12. A vehicle seat, comprising:
at least one fitting as claimed in claim 1 ;
a seat part which is connected to one of the two fitting parts; and
a backrest which is connected to the other of the two fitting parts.
13. A method for producing a fitting for a vehicle seat having a first fitting part and a second fitting part, which are rotatable relative to each other and which are in geared connection with each other by a toothed ring and a gear wheel meshing with the toothed ring; and an eccentric which is driven by a driver, that revolves in the circumferential direction and is intended for driving a relative rolling movement of the gear wheel and the toothed ring, wherein at least one of the driver is mounted with play in a collar of the second fitting part and the eccentric is mounted on the collar of the second fitting part, and wherein a free end of the collar has a flange, an end side of which forms an axial supporting surface for the driver, wherein the flange has a groove in the supporting surface, the method comprising:
drawing the collar; and
subsequent to the drawing step, at least partially displacing radially material of the free end of the collar by a tool in order to form the flange with the supporting surface.
14. The method as claimed in claim 13 , wherein the tool has a bead which at least partially radially displaces the material of the free end of the collar.
15. The method as claimed in claim 14 , wherein the bead forms a groove in the supporting surface.