SEAT UNDERFRAME FOR MOTOR VEHICLE SEATS

• US 20130284874A1
• Filed: 10/07/2011
• Published: 10/31/2013
• Est. Priority Date: 10/27/2010
• Status: Active Grant

• Current Assignee: Adient US, LLC (Adient plc)
• Original Assignee: C ROB Hammerstein GmbH & Company KG (Johnson Controls International plc)
• Inventors: Gumbrich, Markus, Magnus, Nils, Domgrgen, Mark
• Granted Patent: US 9,387,777 B2
• Time in Patent Office: Days
• US Class Current: 248/419
• CPC Class Codes: B60N 2/045 Longitudinal adjustment by means of articulated rods supporting the seat, e.g. parallelogram mechanisms B60N2/38 takes precedence
• CPC Class Codes: B60N 2/06 slidable B60N2/12 , B60N2/2209 take precedence
• CPC Class Codes: B60N 2/161 Rods
• CPC Class Codes: B60N 2/1615 Parallelogram-like structure
• CPC Class Codes: B60N 2/164 Linear actuator, e.g. screw mechanism
• CPC Class Codes: B60N 2/1665 Hydraulic or pneumatic actuation

Abstract

A seat underframe for motor vehicle seats, with two pairs of rails arranged at a distance from each other and each having a seat rail and a floor rail, a seat carrier, in each case two pivoting arms which are connected at one end in an articulated manner to the seat carrier and at the other end in an articulated manner to the seat rails and fix the maximum distance between the seat carrier and the seat rails, and a drive unit adjusting the seat carrier between a lower starting position and an end position. The drive unit for adjusting the seat carrier is formed beyond a height end position which is fixed during normal operation.

Claims

1. A seat underframe for motor vehicle seats, comprising:

two pairs of rails arranged at a distance from each other and each having a seat rail and a floor rail,

a scat carrier,

in each case two pivoting arms that arc articulated at one end to the seat carrier and at the other end to the seat rails and fix the maximum distance between the seat carrier and the seat rails, and

a drive unit that adjusts the seat carrier between a lower starting position and an end position,

wherein the drive unit is designed to move the seat carrier beyond a high end position established in normal operation.

2. The seat underframe according to claim 1, wherein the drive unit is designed to move the seat carrier into the position having the maximum distance.

3. The seat underframe according to claim 1, wherein the drive unit is designed such that the end position of the seat carrier corresponds to the maximum distance of the seat carrier.

4. The seat underframe according to claim 1, wherein the drive unit is designed to move the seat carrier into an end position that is arranged proceeding from the bottom initial position of the seat carrier after exceeding the maximum distance.

5. The seat underframe according to claim 1, wherein the drive unit is designed to change in length, and one end is articulated to the seat rail, and the other end is articulated to the seat carrier.

6. The scat underframe according to claim 1 wherein the drive unit is formed by a spindle drive.

7. The seat underframe according to claim 1, wherein one end of the drive unit is articulated to the seat carrier, and the other end is articulated to a rear pivoting arm.

8. The seat underframe according to claim 7, wherein the other end of the drive unit is articulated to a cantilever arm on the rear pivoting arm.