Patent ID: 9453561
Filing Date: 2016-09-27
CPC Classification: F16F,F16H

Claim Text:
1. A belt tensioning device for a belt drive, wherein the belt drive has at least one unit with a drive shaft, a belt pulley, and a continuous belt for driving the belt pulley, the belt tensioning device comprising: a base member with an attachment means adapted to connect the base member to an assembly and having a sleeve-like portion with an opening into which the drive shaft extends at least partially in an assembled condition, two tensioning arms that are pivotably supported on the sleeve-like portion of the base member around a pivot axis and are supported relative to each other in circumferential direction via a spring, wherein the pivot axis is arranged in the assembled condition within an outer diameter of the belt pulley of the assembly, and two tensioning pulleys for tensioning the belt respectively and rotatably supported on the two tensioning arms around respective axes of rotation, wherein the spring extends around the pivot axis by at least 1.25 coils and a maximum of 2.5 coils, and the opening of the sleeve-like portion of the base member has a smallest inner diameter that is larger than a largest outer diameter of the belt pulley.