公开(公告)号：US20230182630A1

公开(公告)日：2023-06-15

申请号：US17646074

申请日：2021-12-27

申请人： GUMCHANG CO,LTD.

发明人： Jae Yel SONG ,  Hai Tai CHOI ,  Chae Sung SONG ,  Se Gil SHIN ,  Sung Su PARK ,  Sang Ho LEE ,  Man Gi LEE ,  Se Jong KIM ,  Yong CHOI ,  Young Jin HONG

IPC分类号： B60N2/66

CPC分类号： B60N2/666

摘要： A lumbar support for a vehicle seat includes: a support panel made of an elastic material and supporting the user's lumbar vertebra; a first guide rod supporting the support panel; a second link bracket fastened to the first guide rod to be movable up and down; a first link bracket disposed under the second link bracket to be movable up and down with respect to the second link bracket, and having an operation block providing a supporting force to the lumbar vertebra; a first rotary screw vertically extending, thread-fastened to the first link bracket, and moving up and down the first link bracket by rotating about a longitudinal axis; and a second rotary screw vertically extending, thread-fastened to the second link bracket, and moving up and down the second link bracket by rotating about a longitudinal axis.

公开(公告)号：US20210197699A1

公开(公告)日：2021-07-01

申请号：US16864086

申请日：2020-04-30

申请人： GUMCHANG CO., LTD.

发明人： Jae Yel SONG ,  Hai Tai CHOI ,  Chae Sung SONG ,  Se Gil SHIN ,  Min Sung KIM

IPC分类号： B60N2/66

摘要： Provided is a lumbar support disposed in a vehicle seat and supporting the user's lumbar vertebra. According to the present invention, there may be provided a lumbar support for a vehicle seat that includes: a support panel configured to support the user's back; first and second wires configured to support a lower portion of the support panel; a tow wheel winding the first and second wires on a circumferential surface thereof with ends of the first and second wires fixed thereto; and an actuator configured to rotate the tow wheel, in which the tow wheel has: a first wire guide groove extending around the circumferential surface to wind the first wire; and a second wire guide groove extending around the circumferential surface at a different position from the first wire guide groove in a thickness direction to wind the second wire. The lumbar support for a vehicle seat according to the present invention can improve sitting comfort by appropriately changing a force that supports the lumbar vertebra.