Abstract: A seat back frame includes an upper frame member that forms an upper side, a reinforcing member that is provided parallel to and below the upper frame member, and a headrest mounting member, that overlaps with both the upper frame member and the reinforcing member. The headrest mounting member is arranged such that, in one location, from among a location where the headrest mounting member overlaps with the upper frame member and a location where the headrest mounting member overlaps with the reinforcing member, the headrest mounting member is fixed to one of the upper frame member and the reinforcing member, and in the other location, the headrest mounting member abuts against the other of the upper frame member and the reinforcing member when the headrest tilts rearward about the one location, such that the tilting of the headrest is inhibited.

Abstract: An engaging structure has a first engaging portion and a second engaging portion provided on at least one portion from among a first attaching portion and a second attaching portion, and an engagable portion provided on another portion that is different from the one portion. The first attaching portion is overlapped with the second attaching portion such that the first engaging portion abuts against a first edge of the other portion and the second engaging portion abuts against a second edge of the other portion that is different from the first edge. A support member is engaged with a frame member by one of the first engaging portion or the second engaging portion being hooked onto the engagable portion.

Abstract: A support member has a sheet-shaped body that expands and contracts and that supports a cushion, and a frame-shaped body that fixes the sheet-shaped body in a tensioned state. The sheet-shaped body is attached to a frame member by the frame-shaped body being engaged with the frame member. The frame-shaped body is rigid and maintains a shape that follows an outer shape of the frame member when an occupant is seated, and has a first portion where an end portion of the sheet-shaped body is fixed, and a second portion where the end portion of the sheet-shaped body is not fixed. The second portion is formed at a position that corresponds to a position where a load of the occupant concentrates when the occupant is seated.

Abstract: A vehicle seat includes a seat frame, a pad that is attached to the seat frame, an air bag that is attached to the seat frame, a board that is attached to the seat frame and covers the air bag, and a cap that is made of material harder than the pad and is attached to the seat frame, and extends forward of a tip end edge of the board through a gap between the pad and the board.

Abstract: An assembling structure for a vehicle seat includes: an assembly frame having a frame shape and configured to be detachably attached to a seat main body of the vehicle seat, the seat main body having a backbone frame having a frame shape; a planar elastic body configured to elastically support a body of an occupant and is stretched on the assembly frame; an elastic latching unit configured to be detachably attached to a part of the backbone frame, the elastic latching unit formed on a part of a periphery of the assembly frame, wherein the assembly frame further includes a hook portion, the backbone frame further includes a portion to be hooked, and the planar elastic body is prevented from moving in an out-of-plane direction of the planar elastic body when the hook portion of the assembly frame is hooked on the portion to be hooked of the backbone frame.

Abstract: A support member has a first part that abuts against a frame member to be engaged with the frame member, and a second part to which an edge of upholstery is attached. The first part and the second part are formed at one side of the support member in a row. The first part is formed by bending a portion of the one side of the support member so as to curve toward a first side of the frame member that is different from a second side of the frame member, at which a cushioning material is arranged. The second part is formed by bending another portion of the one side of the support member so as to curve in the opposite direction from the first part and so as to protrude toward the center of the frame member.

Abstract: An engaging structure has a first engaging portion and a second engaging portion provided on at least one portion from among a first attaching portion and a second attaching portion, and an engagable portion provided on another portion that is different from the one portion. The first attaching portion is overlapped with the second attaching portion such that the first engaging portion abuts against a first edge of the other portion and the second engaging portion abuts against a second edge of the other portion that is different from the first edge. A support member is engaged with a frame member by one of the first engaging portion or the second engaging portion being hooked onto the engagable portion.

Abstract: A support member has a sheet-shaped body that expands and contracts and that supports a cushion, and a frame-shaped body that fixes the sheet-shaped body in a tensioned state. The sheet-shaped body is attached to a frame member by the frame-shaped body being engaged with the frame member. The frame-shaped body is rigid and maintains a shape that follows an outer shape of the frame member when an occupant is seated, and has a first portion where an end portion of the sheet-shaped body is fixed, and a second portion where the end portion of the sheet-shaped body is not fixed. The second portion is formed at a position that corresponds to a position where a load of the occupant concentrates when the occupant is seated.

Abstract: A seat may be obtained with improved operability of plural adjustable units. A vehicle seat 10 is provided with: a seat lifter 22 provided to a seat body for sitting on, adjustable by transmitted operation force; a reclining mechanism 20 provided to the seat body, adjustable by transmitted operation force; and an operation lever 30, to which operation force from operation by a seat occupant is input; and a switching mechanism 50 that is able to selectively switch between a first state in which operation force of the operation lever 30 is able to be transmitted to the seat lifter 22, and a second state in which operation force of the operation lever 30 is able to be transmitted to the reclining mechanism 20.

Abstract: An assembling structure for a vehicle seat includes: an assembly frame having a frame shape and configured to be detachably attached to a seat main body of the vehicle seat, the seat main body having a backbone frame having a frame shape; a planar elastic body configured to elastically support a body of an occupant and is stretched on the assembly frame; an elastic latching unit configured to be detachably attached to a part of the backbone frame, the elastic latching unit formed on a part of a periphery of the assembly frame, wherein the assembly frame further includes a hook portion, the backbone frame further includes a portion to be hooked, and the planar elastic body is prevented from moving in an out-of-plane direction of the planar elastic body when the hook portion of the assembly frame is hooked on the portion to be hooked of the backbone frame.

Abstract: A vehicle seat is provided. The vehicle seat includes: a planar elastic body that has a frame body provided in a periphery of the planar elastic body, the planar elastic body stretched to the frame body; a cushion member disposed around the planar elastic body; and a backbone member, wherein a supporting surface configured to support a seated person is formed by the planar elastic body and the cushion member, the planar elastic body is assembled to the seat by fixing the frame body to the backbone member, and the cushion member is disposed to be overlaid on the periphery of the planar elastic body at a supporting surface side, the cushion member is covered by a skin material that is attached on the planar elastic body at the supporting surface side.

Abstract: A seat may be obtained with improved operability of plural adjustable units. A vehicle seat 10 is provided with: a seat lifter 22 provided to a seat body for sitting on, adjustable by transmitted operation force; a reclining mechanism 20 provided to the seat body, adjustable by transmitted operation force; and an operation lever 30, to which operation force from operation by a seat occupant is input; and a switching mechanism 50 that is able to selectively switch between a first state in which operation force of the operation lever 30 is able to be transmitted to the seat lifter 22, and a second state in which operation force of the operation lever 30 is able to be transmitted to the reclining mechanism 20.