Patent ID: 9416853
Filing Date: 2016-08-16
CPC Classification: F02B,F16H

Claim Text:
1. Tensioning device for a belt drive that has an endlessly circulating belt, an electric machine with a drive wheel and at least one additional drive wheel that is in drive connection with the drive wheel via the belt, wherein the tensioning device comprises: a tensioner housing supported on the electric machine to pivot about an axis of the drive wheel, a tensioning arm movably supported in the tensioner housing, two tensioning rollers that apply a biasing force on the belt in front of and behind the drive wheel in a circulating direction of the belt, wherein one of the tensioning rollers is supported on the tensioning arm and the other of the tensioning rollers is supported fixed in place on the tensioner housing, and a spring component that generates the biasing force and having spring ends clamped on one side between the tensioner housing and on the other side on the tensioning arm, the spring component comprises two helical compression springs that are connected in series and having facing spring ends separated by an intermediate piece slidably supported in the tensioner housing, the tensioning arm has a pin projection that passes through the helical compression spring and is slidably supported in the intermediate piece.