Belt tensioning device for being used with a starter generator

摘要

A belt tensioning device for a belt drive which comprises a driving machine with a driving belt pulley drivable by a driveshaft around a driving axis, and a plurality of further belt pulleys and with an infinite belt which is wrapped around the driving belt pulley and the further belt pulleys wherein the belt tensioning device comprises a housing in which two tensioning arms are supported so as to be pivotable around a common pivot axis, in which tensioning arms there are supported tensioning rollers with axes of rotation extending parallel to the driving axis, wherein the tensioning arms are supported relative to one another by spring means, wherein, with the driving belt pulley mounted at the driving machine, the housing can be mounted in that, in an annular region surrounding the driveshaft of the driving belt pulley, the housing is contact-free relative to the driving machine.

主权项

1. A combined belt drive and belt tensioning device comprising:
a belt drive including a driving machine having a driveshaft, a driving belt pulley supported on the driveshaft and having an outer circumferential surface that defines a diameter, a plurality of further belt pulleys, and an infinite belt extending about the outer circumferential surface of the driving belt pulley and the plurality of further belt pulleys; and a belt tensioning device including a housing, two tensioning arms supported on the housing for pivoting movement about a common axis and supporting respective rollers engaging the infinite belt, and a spring exerting pressure on the two tensioning arms; wherein the common axis defined by the two tensioning arms is located within the outer circumference of the driving belt pulley; and each of the housing and the two tensioning arms has an aperture defining a diameter that is larger than the diameter defined by the outer circumferential surface of the driving belt pulley.