US 11,724,746 B2
Chassis assembly having mixed materials
Balbir Singh Sangha, Ajax (CA); Len V. Peschansky, West Bloomfield, MI (US); Manish Pamwar, Whitby (CA); Fred M. Marquardt, Commerce, MI (US); William R. Rodgers, Bloomfield Township, MI (US); Bruce N. Greve, Clarkston, MI (US); David Kennedy, Farmington Hills, MI (US); Adrian Bica, Markham (CA); and Bikramjit Sarkaria, Windsor (CA)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US); and Ftech R&D North America Inc., Troy, MI (US)
Filed on Oct. 13, 2021, as Appl. No. 17/500,613.
Prior Publication US 2023/0110672 A1, Apr. 13, 2023
Int. Cl. B62D 21/00 (2006.01); B62D 25/00 (2006.01)
CPC B62D 25/00 (2013.01) [B62D 21/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A chassis assembly having mixed material for reduced mass, the assembly comprising:
an upper structure being one of a metallic single piece and a metallic multi-piece, the upper structure having a plurality of first bond surfaces, each of the first bond surfaces being parallel with each other at varying elevations relative to a z-axis of a 3-dimensional coordinate thereof;
a lower structure made of a polymer composite, the lower structure having a plurality of second bond surfaces, each of the second bond surfaces being parallel with each other at varying elevations relative to the z-axis thereof, the second bond surfaces being arranged to align with the first bond surfaces in complementing relation such that the lower structure is joined with the upper structure at the first and second bond surfaces; and
an adhesive disposed between and in direct contact with the first and second bond surfaces to join the lower and upper structures at the first and second bond surfaces, defining a bond gap between the first and second bond surfaces, wherein the first bond surfaces are disposed above the second bond surfaces when the lower and upper structures are joined.