公开(公告)号：US20190356210A1

公开(公告)日：2019-11-21

申请号：US15985619

申请日：2018-05-21

Applicant: Apple Inc.

Inventor： Jere C. Harrison ,  Alex J. Speltz ,  Xin Alice Wu

IPC: H02K41/03

Abstract: A double helix actuator is disclosed that includes a double helix coil wound around a movable proof mass that is enclosed within a magnetic structure. The double helix coil and the magnetic structure are arranged relative to each other so that the magnetic field generated by the entirety of the double helix coil contributes to a linear force direction of the actuator. The double helix actuator produces a greater linear force density compared to traditional racetrack coil actuators, where only a portion of the coil contributes to the linear force. The double helix actuator also produces torque in addition to linear force which allows the double helix to provide unique haptic sensations in a variety of applications.

公开(公告)号：US20190311588A1

公开(公告)日：2019-10-10

申请号：US15945912

申请日：2018-04-05

Applicant: Apple Inc.

Inventor： Yi-Heng Sen ,  Jere C. Harrison ,  Alex J. Speltz

IPC: G08B6/00

Abstract: A haptic actuator may include first and second bodies movable along an arcuate path of travel. The haptic actuator may also include a biasing member coupled between the first and second bodies. At least one electrical coil may be configured to move the first and second bodies to produce a haptic effect.