公开(公告)号：US20240079940A1

公开(公告)日：2024-03-07

申请号：US18221773

申请日：2023-07-13

Applicant: Apple Inc.

Inventor： David Hiemstra ,  Nils E. Larson ,  Robert R. Ingersoll ,  Eddy Sugyarto

IPC: H02K33/02 ,  G06F3/01

CPC classification number: H02K33/02 ,  G06F3/016

Abstract: A haptic actuator includes a housing having a ferromagnetic wall. The ferromagnetic wall has a set of one or more half shear ferromagnetic features protruding from the ferromagnetic wall into the housing. A movable magnet is positioned within the housing. A pair of springs, respectively attached to opposite sides of the housing and opposite ends of the movable magnet, bias the movable magnet toward a position of rest between the pair of springs. An electric coil is attached to the set of one or more half shear ferromagnetic features and positioned between the movable magnet and the set of one or more half shear ferromagnetic features.