Invention Application
- Patent Title: LINEAR ACTUATORS FOR USE IN ELECTRONIC DEVICES
- Patent Title (中): 线性致动器用于电子设备
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Application No.: PCT/US2016/050770Application Date: 2016-09-08
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Publication No.: WO2017044618A1Publication Date: 2017-03-16
- Inventor: DEGNER, Brett W. , NARAJOWSKI, David H. , HARLEY, Jonah A. , GARVER, Alyssa J.
- Applicant: APPLE INC.
- Applicant Address: One Infinite Loop Cupertino, California 95014 US
- Assignee: APPLE INC.
- Current Assignee: APPLE INC.
- Current Assignee Address: One Infinite Loop Cupertino, California 95014 US
- Agency: HEMENWAY, S. Craig et al.
- Priority: US62/215,686 20150908
- Main IPC: H02K33/16
- IPC: H02K33/16 ; H02K7/08
Abstract:
Embodiments described herein may take the form of an electromagnetic actuator that produces a haptic output during operation. Generally, an electromagnetic coil is wrapped around a central magnet array. A shaft passes through the central magnet array, such that the central array may move along the shaft when the proper force is applied. When a current passes through the electromagnetic coil, the coil generates a magnetic field. The coil is stationary with respect to a housing of the actuator, while the central magnet array may move along the shaft within the housing. Thus, excitation of the coil exerts a force on the central magnet array, which moves in response to that force. The direction of the current through the coil determines the direction of the magnetic field and thus the motion of the central magnet array.
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