A vehicle frame, also historically known as its chassis, is the main supporting structure of a motor vehicle to which all other components are attached, comparable to the skeleton of an organism.
Ladder frame pickup truck chassis holds the vehicle's engine, drivetrain, suspension, and wheels
The unibody - for the unitized body - is also a form of a frame
A ladder frame, named for its shape
Pickup truck frame, with heavy c-shaped longitudinal rails (slightly arced over the rear axle), a similarly sized c-shaped crossmember just forward of the axle, and a tophat-shaped smaller gauge crossmember towards the rear
A chassis, is the load-bearing framework of a manufactured object, which structurally supports the object in its construction and function.
Vehicle frame
…A vehicle frame, also historically known as its chassis, is the main supporting structure of a motor vehicle to which all other components are attached, comparable to the skeleton of an organism. Until the…
The CTC-2 chassis of an RCA CT-100 television
Motor vehicle chassis with its suspension, exhaust system, and steering box