US 11,964,594 B2
Device for preventing rotation of vehicle seat rail
Hwa Young Mun, Hwaseong-si (KR); Kyeong Ju Kim, Hwaseong-si (KR); Cheol Hwan Yoon, Hwaseong-si (KR); Jung Bin Lee, Hwaseong-si (KR); and Jun Sik Hwang, Hwaseong-si (KR)
Assigned to HYUNDAI TRANSYS INC., Seosan-si (KR)
Appl. No. 18/018,899
Filed by Hyundai Transys Inc., Seosan-si (KR)
PCT Filed Jul. 30, 2021, PCT No. PCT/KR2021/009944
§ 371(c)(1), (2) Date Jan. 31, 2023,
PCT Pub. No. WO2022/030887, PCT Pub. Date Feb. 10, 2022.
Claims priority of application No. 10-2020-0096527 (KR), filed on Aug. 3, 2020.
Prior Publication US 2023/0302965 A1, Sep. 28, 2023
Int. Cl. B60N 2/00 (2006.01); B60N 2/07 (2006.01); B60N 2/08 (2006.01)
CPC B60N 2/0722 (2013.01) [B60N 2/08 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An anti-rotation device for a vehicle seat rail, the anti-rotation device comprising:
a lower rail unit mounted on a floor panel inside a vehicle;
an upper rail unit coupled to a seat cushion frame and slidably assembled to the lower rail unit;
a lock plate mounted on the upper rail unit so as to move integrally with the upper rail unit and detachably coupled to the lower rail unit, wherein the lock plate limits sliding movement of the upper rail unit with respect to the lower rail unit;
a hook plate including an upper part fixed to an inner sidewall part of the lower rail unit and a lower part formed to protrude downwards below the lower rail unit; and
a hook member including an upper part coupled to an upper part of the upper rail unit and a lower part formed to surround the lower part of the hook plate, wherein the hook member is configured to prevent rotation of the upper rail unit by being caught on the lower part of the hook plate when a rotational moment is applied to the upper rail unit.