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A rail frame assembly for a motor vehicle comprises a rearward frame module having a pair of generally parallel rearward frame rail members interconnected by a rearward cross-member assembly. A central frame module includes a pair of generally parallel central frame rail members interconnected by a

A rail frame assembly for a motor vehicle comprises a rearward frame module having a pair of generally parallel rearward frame rail members interconnected by a rearward cross-member assembly. A central frame module includes a pair of generally parallel central frame rail members interconnected by a central cross-member assembly, the central frame members each having a generally U-shaped transverse cross-sectional configuration including a vertical base wall portion and a pair of outwardly extending generally parallel horizontal wall portions extending from opposite ends of the base wall portion. The U-shaped central frame members are each bent between two spaced positions thereof, and one of the horizontal wall portions extending from one end of the base wall portion has metallic grains therein substantially stretched at a location between the spaced positions. In addition, an opposite one of the horizontal wall portions extending from an opposite end of the base wall portion has metallic grains therein substantially compressed at the location between the spaced positions. In addition, a forward frame module comprises a pair of generally parallel tubular forward frame rail members interconnected by a forward cross-member assembly. The tubular forward frame rail members each having a generally rectangular transverse cross-section of irregular shape and size.

대표청구항 ▼

A rail frame assembly for a motor vehicle comprising a rearward frame module comprising a pair of generally parallel rearward frame rail members interconnected by a rearward cross-member assembly; a central frame module comprising a pair of generally parallel central frame rail members interconnecte

A rail frame assembly for a motor vehicle comprising a rearward frame module comprising a pair of generally parallel rearward frame rail members interconnected by a rearward cross-member assembly; a central frame module comprising a pair of generally parallel central frame rail members interconnected by a central cross-member assembly, said central frame members each having a generally U-shaped transverse cross-sectional configuration including a vertical base wall portion and a pair of outwardly extending generally parallel horizontal wall portions extending from opposite ends of said base wall portion, said U-shaped central frame members each being bent between two spaced positions thereof, and one of said horizontal wall portions extending from one end of said base wall portion having metallic grains therein substantially stretched at a location between said spaced positions and an opposite one of said horizontal wall portions extending from an opposite end of said base wall portion having metallic grains therein substantially compressed at said location between said spaced positions; and a forward frame module comprising a pair of generally parallel tubular forward frame rail members interconnected by a forward cross-member assembly.