公开(公告)号：US20230220718A1

公开(公告)日：2023-07-13

申请号：US18007801

申请日：2021-06-03

Applicant: Assa Abloy Entrance Systems AB

Inventor： Roger DREYER ,  Simon ONNERED

IPC: E05F15/643

CPC classification number: E05F15/643 ,  E05Y2201/604 ,  E05Y2201/638 ,  E05Y2201/652 ,  E05Y2201/668 ,  E05Y2201/672 ,  E05Y2600/312 ,  E05Y2900/132

Abstract: A belt tensioning system (170) for tensioning a belt (171) of a belt drive system (970) for transferring torque from a drive unit (112) of a door operating system (100) to a sliding door leaf (101) of a sliding door assembly (200), the belt tensioning system comprising a belt wheel (176) connectable to the belt (171) for torque transfer between said belt wheel (176) and an additional belt wheel (175) of the belt drive system (970); a belt wheel guiding arrangement (330), the belt wheel (176) being movably connected to said belt wheel guiding arrangement (330); and a belt tensioning arrangement (470) operatively connecting the belt wheel (176) and the belt wheel guiding arrangement (330) for adjusting the position of the belt wheel (176) relative the belt wheel guiding arrangement (330).