Seat assembly having an impact load transfer structure

1. A seat back frame for use in a vehicle seat assembly, the seat back frame comprising:

a first side member having a first end, a second end, an inner surface, and an outer surface, and a second side member having a first end, a second end, an inner surface, and an outer surface, the first side member and the second side member spaced apart from one another;

a single unitary body defining an upper cross member portion and a load transfer member portion;

the upper cross member portion having a tubular cross-sectional profile, and having a first end coupled to the first end of the first side member and a section coupled to the first end of the second side member;

a lower cross member having a first end and is second end, the first end coupled to the second end of the first side member and the second end coupled to the second end of the second side member; and

the load transfer member portion extending diagonally between a middle of the second side member and a middle of the lower cross member and having an end coupled to the lower cross member such that the load transfer member portion extends diagonally downward to the lower cross member, wherein the load transfer member portion transfers a load from an impact through the seat assembly.

2. The seat back frame of claim 1 , wherein the lower cross member and the load transfer member portion are tubular.

3. The seat back frame of claim 2 , wherein the upper cross member, the lower cross member, and the load transfer member pardon have one of a rectangular, circular, and oval cross-section.

4. The seat back frame of claim 1 , wherein the upper cross member and the load transfer member portion are tubular and have a rectangular cross-section.

5. The seat back frame of claim 1 , wherein the lower cross member is tubular and has a circular cross-section.