US 12,741,568 B2Granted

Longitudinal adjuster for a vehicle seat, and vehicle seat

AssigneeAdient US LLC

InventorsIngo Quast, Erik Sprenger

Life of this patent

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Abstract

A longitudinal adjuster may have a pair of rails and a drive device for the pair of rails. The pair of rails may have a first rail and has a second rail on which the first rail is displaceably guided. The drive device may have at least one motor, a transmission unit, a spindle block which has an inner thread, and a spindle which has an outer thread operatively connected to the inner thread of the spindle block, a spindle bearing and a coupling for coupling the spindle and the motor. The spindle may be mounted along a spindle axis to rotate in the spindle block, the transmission unit, the coupling, the spindle, the spindle bearing and optionally the motor being arranged on a shared axis within the pair of rails. A vehicle seat may be provided with the longitudinal adjuster.

Claims9

Dependent claims

A longitudinal adjuster, comprising:

a rail pair and
a drive device for the rail pair,
wherein the rail pair has a first rail and a second rail, on which the first rail is displaceably guided,
wherein the drive device has at least one motor, a gearing unit, a spindle block which is fixed to the first rail or second rail and has an internal thread, and a spindle having an external thread, which is operatively connected to the internal thread of the spindle block, a spindle bearing and a coupling for coupling the spindle and the motor,
wherein the spindle is mounted in the spindle block so as to be rotatable about a spindle axis,
wherein the gearing unit, the coupling, the spindle and the spindle bearing are arranged on a common axis within the rail pair, and
wherein a drive axis of the motor runs so as to be offset from the common axis within the rail pair and the motor is arranged at least in part within the rail pair.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/869,359Filed 31 May 2023
Priority: DE 10 2022 205 47131 May 2022
Published: US 2025/0303930 A12 Oct 2025
Granted: 22 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

B60N 2/02253
Electric motors therefor: characterised by the transmission between the electric motor and the seat or seat parts
B60N 2/02258
Electric motors therefor: characterised by the mounting of the electric motor for adjusting the seat
B60N 2/067
Slidable: by linear actuators, e.g. linear screw mechanisms
F16H 25/20
For conveying or interconverting oscillating or reciprocating motions: screw mechanisms