Safety apparatus of seat for vehicle with height adjust device

摘要

A safety apparatus of a seat for a vehicle with a height adjustment device may include a height link that has one end rotatably connected to a seat rail bracket and the other end fixed to a rear hinge pipe, a restriction link that may be disposed at a side of the height link and has one end pivotally coupled to the seat rail bracket, wherein the restriction link may be elastically biased away from the height link, a first anti-rotation mechanism that may be disposed at the height link and the restriction link to restrict rotation of the height link when a front of the height link rotates upward in a front collision, and a second anti-rotation mechanism that may be disposed at the height link and the restriction link to restrict rotation of the height link when a rear of the height link rotates upward in a rear collision.

主权项

1. A safety apparatus of a seat for a vehicle with a height adjustment device comprising:
a height link that has one end rotatably connected to a seat rail bracket combined with an inner seat cushion frame and the other end fixed to a rear hinge pipe connecting the inner seat cushion frame with an outer seat cushion frame; a restriction link that is disposed at a side of the height link and has one end pivotally coupled to the seat rail bracket, wherein the restriction link is elastically biased away from the height link; a first anti-rotation mechanism that is disposed at the height link and the restriction link to restrict rotation of the height link when a front of the height link rotates upward in a front collision; and a second anti-rotation mechanism that is disposed at the height link and the restriction link to restrict rotation of the height link when a rear of the height link rotates upward in a rear collision, wherein the first anti-rotation mechanism includes: a link locking gear that is formed on the height link along an outer circumference of an arc shape between the one end and the other end of the height link; a link locking block that integrally protrudes from the other end of the restriction link toward the link locking gear; and a block locking gear that is integrally formed on a surface opposite the link locking gear in the link locking block and restricts the upward rotation of the front of the height link by being engaged with the link locking gear when the front of the height link rotates upward in the front collision, wherein the one end of the restriction link is fixed by a bolt inserted through the seat rail bracket and a nut tightened on the bolt, and wherein the safety apparatus further comprises a spring that is wound around the bolt, has one end supported by the seat rail bracket and the other end supported to the restriction link, and provides the restriction link with an elastic force to keep the link locking gear and the block locking gear spaced apart from each other when the front and rear collision does not occur.