Abstract: In a seat, in a state in which tilting of a back main frame around a tilting center is locked by a reclining mechanism, a lower end of a back joint link is turnably joined to a vehicle side. Thus, turning of a first link, a back sub frame and the back joint link is locked, and operation of a back link mechanism is locked. Therefore, a supporting rigidity from rear side of a back side portion can be enhanced by the back link mechanism (the back sub frame), and a crew sitting in the seat can be thoroughly retained.

Abstract: In a seat, in a state in which tilting of a back main frame around a tilting center is locked by a reclining mechanism, a lower end of a back joint link is turnably joined to a vehicle side. Thus, turning of a first link, a back sub frame and the back joint link is locked, and operation of a back link mechanism is locked. Therefore, a supporting rigidity from rear side of a back side portion can be enhanced by the back link mechanism (the back sub frame), and a crew sitting in the seat can be thoroughly retained.

Abstract: In a seat, in a state in which tilting of a back main frame around a tilting center is locked by a reclining mechanism, a lower end of a back joint link is turnably joined to a vehicle side. Thus, turning of a first link, a back sub frame and the back joint link is locked, and operation of a back link mechanism is locked. Therefore, a supporting rigidity from rear side of a back side portion can be enhanced by the back link mechanism (the back sub frame), and a crew sitting in the seat can be thoroughly retained.

Abstract: In a seat, in a state in which tilting of a back main frame around a tilting center is locked by a reclining mechanism, a lower end of a back joint link is turnably joined to a vehicle side. Thus, turning of a first link, a back sub frame and the back joint link is locked, and operation of a back link mechanism is locked. Therefore, a supporting rigidity from rear side of a back side portion can be enhanced by the back link mechanism (the back sub frame), and a crew sitting in the seat can be thoroughly retained.

Abstract: In a seat (10), in a state in which tilting of a back main frame (16) around a tilting center (16A) is locked by a reclining mechanism (18), a lower end of a back joint link (26) is turnably joined to a vehicle side. Thus, turning of a first link (22), a back sub frame (24) and the back joint link (26) is locked, and operation of a back link mechanism (14) is locked. Therefore, a supporting rigidity from rear side of a back side portion (12B) can be enhanced by the back link mechanism (14) (the back sub frame (24)), and a crew sitting in the seat (10) can be thoroughly retained.

Abstract: When a seat (10) is to be stowed, a seat pad (28) is moved toward a seat (10) reverse side, pad side portions (32) are rotated toward the seat (10) reverse side with respect to a pad center portion (30), and a center portion (12) and side portions (14) of the seat (10) are contracted. Here, interlockingly with contraction of the side portions (14), a skin (42) is bent and folded in at portions covering distal ends of vertical walls (22) of a wall panel (18) and at second fixing portions (42B). Due thereto, slack of the skin (42) at seat (10) lateral direction end surfaces can be taken in.

Abstract: A vehicular seat device has a first linking member (21) that is linked to a front portion of a seat cushion frame (16) and to a base member (24) so as to be respectively pivotable, and a second linking member (22) that is pivotably linked to a rear portion of the seat cushion frame (16) and is also pivotably linked to a position on a seatback frame (18) which is upward of a reclining mechanism (26) when the seatback is in a standing state. The seat arrangements thereof include a retracted state in which the seatback (14) is superimposed on the upper side of the seat cushion (12), and an entry/exit state in which the seat cushion (12) is placed in the standing state producing a space for an occupant's entry or exit behind the seat.

Abstract: In a seat (10), in a state in which tilting of a back main frame (16) around a tilting center (16A) is locked by a reclining mechanism (18), a lower end of a back joint link (26) is turnably joined to a vehicle side. Thus, turning of a first link (22), a back sub frame (24) and the back joint link (26) is locked, and operation of a back link mechanism (14) is locked. Therefore, a supporting rigidity from rear side of a back side portion (12B) can be enhanced by the back link mechanism (14) (the back sub frame (24)), and a crew sitting in the seat (10) can be thoroughly retained.

Abstract: A vehicular seat device has a first linking member (21) that is linked to a front portion of a seat cushion frame (16) and to a base member (24) so as to be respectively pivotable, and a second linking member (22) that is pivotably linked to a rear portion of the seat cushion frame (16) and is also pivotably linked to a position on a seatback frame (18) which is upward of a reclining mechanism (26) when the seatback is in a standing state. The seat arrangements thereof include a retracted state in which the seatback (14) is superimposed on the upper side of the seat cushion (12), and an entry/exit state in which the seat cushion (12) is placed in the standing state producing a space for an occupant's entry or exit behind the seat.

Abstract: When a seat (10) is to be stowed, a seat pad (28) is moved toward a seat (10) reverse side, pad side portions (32) are rotated toward the seat (10) reverse side with respect to a pad center portion (30), and a center portion (12) and side portions (14) of the seat (10) are contracted. Here, interlockingly with contraction of the side portions (14), a skin (42) is bent and folded in at portions covering distal ends of vertical walls (22) of a wall panel (18) and at second fixing portions (42B). Due thereto, slack of the skin (42) at seat (10) lateral direction end surfaces can be taken in.