MEMS speaker
    2.
    发明授权

    公开(公告)号:US11917387B2

    公开(公告)日:2024-02-27

    申请号:US18102667

    申请日:2023-01-27

    Applicant: Apple Inc.

    CPC classification number: H04R7/14 B81B3/0021 H04R19/02

    Abstract: Aspects of the subject technology relate to electronic devices having speakers such as microelectromechanical systems (MEMS) speakers. A MEMS speaker can include an electrostatically driven, corrugated MEMS structure to move air without a magnet, coil, or traditional speaker membrane, and thus provide a low-power, compact speaker with a large acoustically active area in a small volume. Neighboring folds in the corrugated MEMS structure may form pairs of MEMS electrodes that can be pushed together and/or pulled apart to deform the MEMS structure in a breathing motion that generates pressure differentials on opposing sides of the corrugated MEMS structure to generate sound. Additional modes of operation are described.

    DUAL FUNCTION TRANSDUCER
    3.
    发明公开

    公开(公告)号:US20240007796A1

    公开(公告)日:2024-01-04

    申请号:US18468489

    申请日:2023-09-15

    Applicant: Apple Inc.

    Abstract: A transducer assembly comprising: a magnet motor assembly comprising a first magnet plate and a second magnet plate arranged along an axis, a first support plate positioned between inward facing surfaces of the first magnet plate and the second magnet plate, a second support plate positioned along an outward facing surface of the first magnet plate to form a first magnetic gap between the first support plate and the second support plate, and a third support plate positioned along an outward facing surface of the second magnet plate to form a second magnetic gap between the first support plate and the third support plate; a voice coil coupled to the magnet motor assembly, wherein the voice coil is positioned around the first support plate and within the first magnetic gap and the second magnetic gap; and a piston coupled to the voice coil, wherein the piston is operable to vibrate in a direction parallel to the axis.

    MOVING-MAGNET MOTOR
    6.
    发明申请

    公开(公告)号:US20220337956A1

    公开(公告)日:2022-10-20

    申请号:US17688536

    申请日:2022-03-07

    Applicant: Apple Inc.

    Abstract: A moving magnet motor comprising: a stationary voice coil coupled to a frame; a moving magnet assembly movably coupled to the frame and operable to move relative to the stationary coil, the moving magnet assembly comprising a magnet and a flux concentrating member that define a gap within which the stationary coil is positioned; and an actuating surface coupled to the moving magnet assembly, and wherein a movement of the moving magnet assembly drives a movement of the actuating surface along an axis of translation.

    LOUDSPEAKER HAVING COLLAPSIBLE LEAD WIRE

    公开(公告)号:US20220095026A1

    公开(公告)日:2022-03-24

    申请号:US17409485

    申请日:2021-08-23

    Applicant: Apple Inc.

    Abstract: A loudspeaker having a compressible lead wire is described. The lead wire carries an electrical audio input signal to a voice coil. The electrical audio input signal drives the voice coil to oscillate in an axial direction. The compressible lead wire includes an elastic portion that stretches and compresses in the axial direction to allow the voice coil to oscillate freely. The elastic portion includes several compressible elements that are located within a cavity of the loudspeaker. The compressible elements extend through the cavity in the axial direction. Other aspects are also described and claimed.

    FLAT TRANSDUCER FOR SURFACE ACTUATION
    8.
    发明申请

    公开(公告)号:US20200374633A1

    公开(公告)日:2020-11-26

    申请号:US16418745

    申请日:2019-05-21

    Applicant: Apple Inc.

    Abstract: A transducer assembly including a stiffener plate having a first side and a second side; a voice coil coupled to the second side of the stiffener plate; a magnet assembly positioned along the second side of the stiffener, the magnet assembly operable to produce a magnetic field that causes a movement of the magnet assembly relative to the voice coil; and a spring suspending the magnet assembly from the stiffener plate such that the movement of the magnet assembly drives a movement of the stiffener plate.

Patent Agency Ranking