VEHICLE SEAT WITH GUIDED SCISSOR ARMS

• US 20120133184A1
• Filed: 11/28/2011
• Published: 05/31/2012
• Est. Priority Date: 11/29/2010
• Status: Active Grant

• Current Assignee: Grammer AG (Ningbo Jifeng Auto Parts Co.,Ltd.)
• Original Assignee: Grammer AG (Ningbo Jifeng Auto Parts Co.,Ltd.)
• Inventors: HIMMELHUBER, Frank
• Granted Patent: US 8,960,802 B2
• Time in Patent Office: Days
• US Class Current: 297/338
• CPC Class Codes: B60N 2/162 Scissors-like structure
• CPC Class Codes: B60N 2/50 Seat suspension devices

Abstract

The invention concerns a vehicle seat with a seat upper part comprising a seat part and a back rest, and with a seat lower part, wherein between the seat upper part and the seat lower part is arranged a height-adjustable seat frame with at least two scissor arms connected rotatably together, wherein at least a first end of at least one of the scissor arms is connected with at least one slide element for sliding displacement of the first end in at least one displacement direction along at least one guide rail, wherein the slide element has at least one flexibly formed pressure force element to exert a pressure force directed against the guide rail.

Claims

1. A vehicle seat comprising:

an upper part, a back rest, and a lower part, wherein between the seat upper part and the seat lower part is arranged a height-adjustable seat frame with at least two scissor arms connected rotatably together, wherein at least a first end of at least one of the scissor arms is connected with at least one slide element for sliding displacement of the first end in at least one displacement direction along at least one guide rail, and wherein the slide element has at least one flexibly formed pressure force element to exert a pressure force directed against the guide rail.

2. Vehicle seat according to claim 1, characterised in that the slide element is at least one element substantially cuboid-shaped which slides with at least two opposing first surfaces on slide surfaces of the guide rail which preferably has a U-shaped cross section profile.

3. Vehicle seat according to claim 2, characterised in that the first surfaces are structured such that each first surface in the middle section of the first surface has a first face and, viewed in displacement direction, at least one first wing-like pressure force element arranged after the first face and at least one second wing-like pressure force element arranged before the first face are arranged.

4. Vehicle seat according to claim 3, wherein the first and second wing-like pressure force elements constitute plate elements slightly curved in the longitudinal or transverse direction of the guide rail, which elements have a free first end pressing against the guide rail and a second end fixed to the slide element.

5. Vehicle seat according to claim 2, wherein the first surfaces are structured such that each first surface, viewed in displacement direction, has at least one flat or arcuated second face arranged after the first face and at least one flat or arcuated third face arranged before the first face.

6. Vehicle seat according to claim 5, wherein the two second faces and two third faces each border peripherally one of the flexibly formed pressure force elements.

7. Vehicle seat according to claim 5, wherein the second faces, viewed in displacement direction, run slopingly from the first face towards a first end of the first surface and the third faces, viewed against the displacement direction, run slopingly from the first face towards a second end of the first surface.

8. Vehicle seat according to claim 5, wherein the first and/or second and/or third faces viewed perpendicular to the displacement direction, starting from a middle section of the faces constitute or have, respectively, areas sloping towards the edge areas of the first surface of the element.

9. Vehicle seat according to claim 5, wherein the second and the third faces are arranged as flat faces with an angle from the range of 0.05°

to 5.0°

in relation to a plane of the slide surface of the guide rail.

10. Vehicle seat according to claim 1, wherein the pressure force element in the untensioned state is arranged at least partly spaced at a distance of 0.3 to 3 mm, preferably 0.6 mm from a plane spanned by the first face, and pointing away from the slide element.