Folding hood for motor vehicles

A folding hood for motor vehicles, comprising:

• a first roof frame part which rests on a frame portion of the motor vehicle when the hood is closed and is connected thereto via a locking device for securing a locking side of the hood;
• a second roof frame part pivotably mounted to the first roof frame part on a side opposite the locking side about a bearing axis of which the first roof frame part can be swung into a lift-off position after unlocking thereof,
• an automatic pivot drive attached to the first roof frame part via a spring loading drive,
• a drive device for the spring-loaded drive, which is regenerated during downward pivoting of the first roof frame a part into a bearing position, and is supported on the mutually connected end regions of the roof frame parts at a distance from the baring axis and is designed as a supporting arrangement with a limited longitudinal variability arranged below the bearing axis and is supported by opposite ends on the roof frame parts said drive device consisting of a combination of a push rod, which is axially displaceably mounted in a tubular guide, and a coaxially compressible compression spring, said drive device being arranged on one of the hood parts, the end of the push rod interacting with a support stop on the other hood part, wherein the tubular guide is integrated into a supporting component of the first roof frame in such a manner, that the push rod projects out of the front edge surface of the first roof frame part, and in that the support stop interacting with the push rod end is arranged on the opposite front edge surface of the second roof frame part.