| 摘要 |
A seat having a collision stopper ( 51 ) activated in a short time period in collision. The seat is constituted of a supporting link ( 23 ), a stopper link ( 55 ), a recess/ridge surface ( 61 ), a stopper ( 65 ), and urging means ( 67 ). The supporting link ( 23 ) is installed at its upper portion to the floor side and at its lower portion to the seat cushion side, supporting a seat cushion, and adjusts the height of the seat cushion by inclination in the forward and backward directions in the vertical plane. The stopper link ( 55 ) is attached at its base end section to the floor side such that a rotation end section is rotatable in the forward and backward directions in a vertical plane. The stopper link ( 55 ) has, on its rotation end section side, a projection ( 57 ) projecting sideward. The recess/ridge surface ( 61 ) is provided on the supporting link ( 23 ) side, extending in the direction intersecting the movement path of the projection. When engages with the projection upon receiving a collision load in an assumed direction, the recess/ridge surface ( 61 ) inhibits further rotation of the supporting link ( 23 ) by cooperating with the projection. The stopper ( 65 ) comes in contact with the projection at a position where the projection does not engages the recess/ridge surface ( 61 ), inhibiting the projection from further separating from the recess/ridge surface ( 61 ). The urging means ( 67 ) urges the stopper link ( 55 ) in the direction where the projection is in contact with the stopper.
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