US 12,447,870 B2
Apparatus for operating seat
Heoung Su Lim, Hwaseong-si (KR); Cheon Kim, Hwaseong-si (KR); Kyeong Ho Seo, Hwaseong-si (KR); and Seongjun Hwang, Hwaseong-si (KR)
Assigned to Hyundai Transys Inc., Seosan-si (KR)
Filed by Hyundai Transys Inc., Seosan-si (KR)
Filed on Sep. 20, 2023, as Appl. No. 18/470,685.
Claims priority of application No. 10-2022-0161847 (KR), filed on Nov. 28, 2022.
Prior Publication US 2024/0174135 A1, May 30, 2024
Int. Cl. B60N 2/06 (2006.01); B60N 2/02 (2006.01)
CPC B60N 2/067 (2013.01) [B60N 2/02253 (2023.08)] 7 Claims
OG exemplary drawing
 
1. An apparatus for operating a seat, comprising a lead screw,
wherein two opposite ends of the lead screw are rotatably supported by first and second brackets, the lead screw and the first and second brackets being configured to be disposed in a movable rail,
wherein the lead screw has a threaded portion disposed on an outer-diameter portion between the two opposite ends of the lead screw, the threaded portion is screw-coupled to a lead nut configured to be disposed in the movable rail to enable the lead screw to move along a screw inner-diameter portion of the lead nut, and the lead nut is configured to be connected to a stationary rail fixed to a floor panel of a vehicle,
wherein the lead screw comprises an assembling part disposed at one end of the lead screw to be directed toward a gearbox, and the assembling part of the lead screw is coupled to a worm wheel mounted in the gearbox,
wherein the assembling part of the lead screw comprises:
a tip portion directed toward the worm wheel and coupled to penetrate an inner-diameter portion of the worm wheel; and
an inclined assembling part disposed between the tip portion and the threaded portion of the lead screw and having a tapered shape having an outer diameter that increases toward the threaded portion such that the inclined assembling part fits with the inner-diameter portion of the worm wheel, the inclined assembling part including one or more coupling grooves defined in an outer-diameter portion thereof, and catching end portions disposed at a rear end thereof directed toward the threaded portion.