公开(公告)号：US11168768B1

公开(公告)日：2021-11-09

申请号：US16296182

申请日：2019-03-07

Applicant: Facebook Technologies, LLC

Inventor： Ali Israr ,  Priyanshu Agarwal ,  Pratheev Sabaratnam Sreetharam

IPC: F16H25/20 ,  G06F3/01 ,  F16H25/24

Abstract: A haptic device includes a network of motorized shear actuators. The shear actuators each include a drive mechanism and a lead screw having a threaded outer surface rotatably coupled to the drive mechanism and extending along a primary axis. A carriage is movably coupled to the lead screw by a nut having a threaded inner surface and is disposed within a chassis. One or more flexure springs are attached to the chassis and are configured to exert a reactive force to resist a force applied to the carriage in a direction orthogonal to or substantially orthogonal to the primary axis. The flexure springs may cooperate with a stop mechanism to improve the mechanical robustness of the shear actuators under applied loads.