Vehicle seat
There is provided a vehicle seat including a seat frame which supports a load of a sitting passenger, a seat pad which is set on the seat frame and receives the load of the sitting passenger to be relieved, and a support body which is supported to the seat frame and supports a part of the seat pad from a backside thereof. The support body is supported to the seat frame to be slidable in an in-plane direction of a plane supporting the load of the sitting passenger or to be axially rotatable in an out-of-plane direction of the plane, such that the load of the sitting passenger can be relieved. The seat pad includes a fixed part which is supported to the seat frame at a fixed position and a movable part which is supported to the support body to be movable.
1. A vehicle seat comprising a quadrangle shaped seat frame configured to support a load of a sitting passenger;
a seat pad which is set on the seat frame and receives the load of the sitting passenger; and
a support body which is supported on the seat frame and supports a part of the seat pad from a backside thereof,
the quadrangle shaped seat frame including a pair of side frames, a front panel bridging front ends of the side frames, and a rear pipe bridging rear ends of the side frames, the side frames, front panel, and rear pipe generally defining a plane,
wherein the support body is supported to be slidable on the seat frame in an in-plane direction of the plane and supporting the load of the sitting passenger or is rotatably supported on the front panel for rotation about an axis that intersects the plane at an acute angle and is rotatable in an out-of-plane direction of the plane, and the support body is elastically hung on the rear pipe of the seat frame by a plurality of springs, such that the load of the sitting passenger can be relieved, and
wherein the seat pad includes a fixed part which is supported on at least one of the front panel and the side frames of the seat frame at a fixed position and a movable part which is supported on the support body.
2. The vehicle seat according to claim 1 ,
wherein the support body is configured such that a center portion of the support body in a width direction is rotatably axis-supported on the seat frame and side surface parts are tilted to follow a movement of the load of the sitting passenger, which is applied unevenly between the side surface parts.
3. The vehicle seat according to claim 2 ,
wherein one end of the center portion of the support body is rotatably axis-supported on the seat frame, and another end of the center portion of the support body is elastically hung on the seat frame by a plurality of springs, such that the support body is supported in a tilt direction.
4. The vehicle seat according to claim 3 ,
wherein the support body is provided within the seat frame and configuring a skeleton of a seat cushion, and
wherein the end of the center portion of the support body is rotatably axis-supported on the cushion frame is a front end of the center portion of the support body, and the end of the center portion of the support body elastically hung on the cushion frame by the plurality of springs is a rear end of the center portion of the support body, such that the support body is supported in the tilt direction.
5. The vehicle seat according to claim 1 ,
wherein the seat pad is formed with a slit at a boundary part of the movable part and the fixed part to allow the movable part to follow movement of the support body.