Cushion frame for vehicle seat
In a cushion frame, a bracket body, to which a hinge is fixed, is welded and fixed to a bridge frame, which couples a front frame and an intermediate frame to each other, and to a second frame. This results in a configuration in which the front frame, the intermediate frame, the bridge frame, and the second frame form a frame-shaped structure and in which the bracket body is fixed to at least the bridge frame and the second frame.
1 . A cushion frame for a vehicle seat in which a front end portion of a seat cushion is coupled to a vehicle via a hinge, the cushion frame comprising:
a first frame arranged on one end side in a seat-width direction, the first frame extending in a seat front-rear direction;
a second frame arranged on an other end side in the seat-width direction, the second frame extending in the seat front-rear direction;
a front frame extending in the seat-width direction and coupling a front end of the first frame and a front end of the second frame to each other;
an intermediate frame extending in the seat-width direction and coupling the first frame and the second frame to each other, the intermediate frame being arranged rearward of the front frame;
a bridge frame extending in the seat front-rear direction so as to bridge the front frame and the intermediate frame, the bridge frame coupling the front frame and the intermediate frame to each other; and
a bracket body to which the hinge is to be fixed, the bracket body being directly fixed at least to the bridge frame and the second frame.
2 . The cushion frame for a vehicle seat according to claim 1 , the bracket body further comprising:
an arched portion fixed to the second frame, the arched portion being fixed to the second frame on a fore side and a rear side of the intermediate frame.
3 . The cushion frame for a vehicle seat according to claim 2 ,
wherein one end of the bridge frame in its extending direction is welded to a first coupling frame, which is either one of the front frame and the intermediate frame, to hold the first coupling frame from an upper side and a lower side of the first coupling frame, and
wherein an other end of the bridge frame in its extending direction is welded to a second coupling frame, which is an other one of the front frame and the intermediate frame, on one side of the second coupling frame in an up-down direction of the second coupling frame.
4 . The cushion frame for a vehicle seat according to claim 3 ,
wherein the intermediate frame penetrates the second frame and extends in the seat-width direction and,
wherein the cushion frame for a vehicle seat further comprises:
a third frame to which a leading-end side portion of the intermediate frame in its extending-direction is fixed, the third frame extending from the leading-end side portion of the intermediate frame toward a seat rear side; and
a reinforcing portion welded to a part of the intermediate frame between the second frame and the third frame, the reinforcing portion being integral with the bracket body.
5 . The cushion frame for a vehicle seat according to claim 4 ,
wherein the bracket body, the arched portion, and the reinforcing portion form an integral article formed of a single sheet of steel.
6 . The cushion frame for a vehicle seat according to claim 1 , wherein the seat cushion is operable to pivot up forwardly about the front end portion thereof via the hinge from a seat cushion usage position to a seat cushion storage position.