US 12,109,923 B2
Longitudinal adjuster and vehicle seat
Martin Kuzma, Trencianska Turna (SK); and Andrej Sulak, Podluzany (SK)
Appl. No. 17/796,718
Filed by ADIENT US LLC, Plymouth, MI (US)
PCT Filed Feb. 1, 2021, PCT No. PCT/EP2021/052294
§ 371(c)(1), (2) Date Aug. 1, 2022,
PCT Pub. No. WO2021/156199, PCT Pub. Date Aug. 12, 2021.
Claims priority of application No. 10 2020 102 804.0 (DE), filed on Feb. 4, 2020; and application No. 10 2020 110 442.1 (DE), filed on Apr. 16, 2020.
Prior Publication US 2023/0062040 A1, Mar. 2, 2023
Int. Cl. B60N 2/00 (2006.01); B60N 2/02 (2006.01); B60N 2/06 (2006.01); B60N 2/42 (2006.01)
CPC B60N 2/4214 (2013.01) [B60N 2/02246 (2023.08); B60N 2/067 (2013.01); B60N 2/02258 (2023.08)] 13 Claims
OG exemplary drawing
 
1. A longitudinal adjuster for a vehicle seat, comprises:
at least one rail pair which is formed by a first rail and a second rail which can be displaced relative to the first rail in the longitudinal direction, wherein the rails mutually engage around each other with an inner channel being formed,
wherein a spindle nut, which is supported with the second rail, and a spindle, which is operationally connected to the spindle nut, are arranged in the inner channel,
wherein a spindle gear, which is driven by a motor and which cooperates with the spindle, is arranged in an end region of the first rail,
wherein the spindle gear is surrounded by a gear mechanism housing,
wherein the gear mechanism housing has at least one cylindrical bearing portion for supporting a worm gear which is connected to the spindle,
wherein the gear mechanism housing has a step which adjoins the cylindrical bearing portion, wherein the step is configured to support the worm gear in the event of a crash,
wherein an inner diameter of the step is smaller than an inner diameter of the cylindrical bearing portion.