Vehicle seat with guided scissor arms

• US 8,960,802 B2
• Filed: 11/28/2011
• Issued: 02/24/2015
• 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
• Primary Examiner(s): Dunn, David R
• Assistant Examiner(s): Lowry, Richard
• Application Number:
  US13/305,487
• Publication Number:
  US 20120133184A1
• Time in Patent Office: 1,184 Days
• Field of Search: 297/452.18, 297/344.15, 297/344.16, 297/344.17, 297/463.1, 297/344.12, 248/421
• US Class Current: 297/452.18
• 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 upper part and the 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 two 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 at least one slide element slides with at least two opposing first surfaces on slide surfaces of the at least one guide rail, wherein a first face is positioned in a middle section of each of the at least two opposing first surfaces, wherein the at least one slide element has at least one flexibly formed wing-like first pressure force element and at least one flexibly formed wing-like second pressure force element to exert a pressure force directed against the at least one guide rail, wherein viewed in the displacement direction the at least one first pressure force element is arranged after the first face and the at least one second pressure force element is arranged before the first face, and wherein the at least one second pressure force element extends in the displacement direction and the at least one first pressure force element extends against the displacement direction.

2. The vehicle seat according to claim 1, wherein the at least one slide element is at least one substantially cuboid-shaped element which slides on the slide surfaces of the at least one guide rail which has a U-shaped cross section profile.

3. The vehicle seat according to claim 1, wherein the at least one first and second pressure force elements constitute plate elements slightly curved in a longitudinal or transverse direction of the at least one guide rail, and wherein the at least one first and second pressure force elements have a free first end pressing against the at least one guide rail and a second end fixed to the at least one slide element.

4. The vehicle seat according to claim 1, wherein the at least two opposing first surfaces are structured such that each of the at least two opposing first surfaces, 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.

5. The vehicle seat according to claim 4, wherein the at least one second face and the at least one third face each border peripherally one of the at least one first and second pressure force elements.

6. The vehicle seat according to claim 4, wherein the at least one second face, viewed in displacement direction, runs slopingly from the first face towards a first end of the first surface, and wherein the at least one third face, viewed against the displacement direction, runs slopingly from the first face towards a second end of the first surface.

7. The 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 edge areas of the first surface of the at least one slide element.

8. The vehicle seat according to claim 4, 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.

9. The vehicle seat according to claim 1, wherein in an untensioned state the at least one first and second pressure force elements are arranged at least partly spaced at a distance of 0.3 to 3 mm, from a plane spanned by the first face, and wherein a free end of each of the at least one first and second pressure force elements is arranged pointing away from the slide element.

10. The vehicle seat according to claim 9, wherein in the untensioned state the at least one first and second pressure force elements are arranged at least partly spaced at a distance of about 0.6 mm from the plane spanned by the first face.