US 11,938,847 B2
Stepless brake device of vehicle seat
Jae Ho Kim, Suwon-si (KR)
Assigned to DAS CO., LTD, Gyeongju-si (KR)
Filed by DAS CO., LTD, Gyeongju-si (KR)
Filed on Jun. 29, 2022, as Appl. No. 17/853,378.
Claims priority of application No. 10-2021-0085911 (KR), filed on Jun. 30, 2021.
Prior Publication US 2023/0012323 A1, Jan. 12, 2023
Int. Cl. B60N 2/16 (2006.01); B60N 2/18 (2006.01)
CPC B60N 2/168 (2013.01) [B60N 2/165 (2013.01); B60N 2/1685 (2013.01); B60N 2/1864 (2013.01); B60N 2/1889 (2013.01); B60N 2/1892 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A stepless brake device of a vehicle seat,
wherein an input member and an unlock member are disposed on one side of a housing, and a braking member, a fixing member, and a gear member are disposed on the other side of the housing,
wherein a housing cover surrounding the input member is disposed on the one side of the housing,
wherein a plate cover preventing separation of the braking member and the gear member is disposed on the other side of the housing,
wherein a plurality of coupling pieces formed on the plate cover is caulked and coupled to the housing cover in a state where the housing cover and the plate cover are compressed in a direction toward each other,
wherein the unlock member has a plurality of unlock protrusions formed around a circumference of the unlock member,
wherein corners on both sides of an end portion of the unlock protrusion are formed as inclined surfaces,
wherein a concave round groove is formed in each of the inclined surfaces,
wherein a straight guide groove is formed in a radially outer surface of the unlock member in an operation direction of the unlock member, and
wherein a straight guide protrusion which is inserted into the guide groove is formed on an inner surface of a border portion of the housing.