JP2022050687A5 - - Google Patents

Claims (10)

A seat back frame supported by a seating frame that is a frame of a vehicle seat and a frame of a seating portion on which an occupant sits,
The seatback frame includes side frames that are spaced apart in the left and right direction, and a lower connection member that is arranged to extend between the lower portions of the left and right side frames and connects the left and right side frames,
The lower connection member is a front wall portion arranged on the occupant side, and is a front wall portion that receives a load from the buttocks of the occupant in the event of a rear-end collision, and a rear wall portion that is connected to the rear of the front wall portion, A sheet metal having a rear wall portion connected to the side frame, the front wall portion, and a connecting portion connecting the front wall portion and the rear wall portion,
the front end of the front wall portion of the lower connection member is positioned in front of the lower end of the pressure receiving member disposed between the left and right side frames;
The seat back frame is configured to be reclinable with respect to the seating frame,
A shaft connecting the left and right side frames is arranged on the rotation axis of the seat back frame,
The front wall portion is positioned in front of the shaft,
the lower end of the rear wall portion is formed below the upper end of the shaft in a state before a rear collision occurs ;
A seat back frame , wherein a portion of the rear wall portion is located behind the shaft and overlaps the shaft when viewed from the rear . The seatback frame according to claim 1, wherein the lower end of the rear wall portion is positioned above the lower end of the front wall portion. 3. The seatback frame according to claim 1, wherein the upper end of the rear wall portion is located above the front end of the front wall portion. The seatback frame according to any one of claims 1 to 3, wherein the lower end of the rear wall portion is located above the lower end of the shaft. 2. The seat back frame according to claim 1, wherein the lower connection member is made of a single sheet metal. The seatback frame according to any one of claims 1 to 5, wherein the front end of the front wall portion is positioned in front of the shaft. The seatback frame according to any one of claims 1 to 6, wherein the front end of the front wall portion is positioned below the upper end of the shaft. The seatback frame according to any one of claims 1 to 7, wherein the upper end of the shaft is located below the lower end of the pressure receiving member. a seat back frame according to any one of claims 1 to 8;
a seating frame that supports the seat back frame;
A seat frame, wherein the seat back frame and the seating frame are connected via a reclining mechanism. a seat frame according to claim 9;
a cushion placed on the seat frame;
a cover attached to the seat frame;
and a skin material that covers the surface of the cushion.