| 摘要 |
PROBLEM TO BE SOLVED: To eliminate forward inclination/movement of a seat back even if walk-in operation is performed in such a state that a person sits on a vehicular seat. SOLUTION: A back frame 2F forming a skeleton of a seat back 2 is forwardly rotatably connected to a support base 4, and a front link 6 is linked with the support base 4 between a cushion frame 3F forming a skeleton of a seat cushion 3 and it. A boomerang link 5 rotatably connected to a back frame 2F is integrally connected to a rear part of the cushion frame 3F, and an escaping structure for escaping movement of a connection point at forward falling/rotation of the seat back 2 is provided on a connection part of the front link 6 and the cushion frame 3F. The escaping structure is made to a constitution that a connection pin 6B is slidably fitted into an inclined long hole 3H, and when large load in a sinking direction that the person sits is input to the seat cushion 3, the connection pin 6B is pressed to an end part of the long hole 3H to restrict the slide action. COPYRIGHT: (C)2009,JPO&INPIT
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