PLANAR MAGNETIC DRIVER HAVING TRACE-FREE RADIANT REGION

    公开(公告)号:US20210185450A1

    公开(公告)日:2021-06-17

    申请号:US17175496

    申请日:2021-02-12

    Applicant: APPLE INC.

    Abstract: A planar magnetic driver including a radiating surface having a trace-free central region is described. The driver has a magnet defining an acoustic opening on a central axis. A diaphragm of the planar magnetic driver is held by mounts having a mounting profile around the central axis, and the diaphragm includes a radiating surface facing the acoustic opening. An innermost conductive trace on the diaphragm extends around a central region of the radiating surface within a magnetic flux of the magnet such that no conductive traces are on the central region. A radial distance between the innermost conductive trace and the mounting profile is less than another radial distance between the innermost conductive trace and the central axis. Accordingly, an excursion range of the diaphragm along the central axis is greater than a gap distance between the conductive trace and the magnet. Other aspects are also described and claimed.

    Continuous surround
    2.
    发明授权

    公开(公告)号:US10708694B2

    公开(公告)日:2020-07-07

    申请号:US15835365

    申请日:2017-12-07

    Applicant: Apple Inc.

    Abstract: A transducer assembly including a frame, a diaphragm positioned within the frame, a surround connecting the diaphragm to the frame, the surround having a corner section and a plurality of corrugations formed within the corner section, wherein each corrugation of the plurality of corrugations comprises a length dimension perpendicular to a line of maximum stress intersecting a radial axis of the corner section, a voice coil extending from one side of the diaphragm and a magnet assembly having a magnetic gap aligned with the voice coil.

    Planar magnetic driver having trace-free radiating region

    公开(公告)号:US10959024B2

    公开(公告)日:2021-03-23

    申请号:US16144813

    申请日:2018-09-27

    Applicant: Apple Inc.

    Abstract: A planar magnetic driver including a radiating surface having a trace-free central region is described. The driver has a magnet defining an acoustic opening on a central axis. A diaphragm of the planar magnetic driver is held by mounts having a mounting profile around the central axis, and the diaphragm includes a radiating surface facing the acoustic opening. An innermost conductive trace on the diaphragm extends around a central region of the radiating surface within a magnetic flux of the magnet such that no conductive traces are on the central region. A radial distance between the innermost conductive trace and the mounting profile is less than another radial distance between the innermost conductive trace and the central axis. Accordingly, an excursion range of the diaphragm along the central axis is greater than a gap distance between the conductive trace and the magnet. Other aspects are also described and claimed.

    Planar magnetic driver having trace-free radiant region

    公开(公告)号:US11617039B2

    公开(公告)日:2023-03-28

    申请号:US17175496

    申请日:2021-02-12

    Applicant: APPLE INC.

    Abstract: A planar magnetic driver including a radiating surface having a trace-free central region is described. The driver has a magnet defining an acoustic opening on a central axis. A diaphragm of the planar magnetic driver is held by mounts having a mounting profile around the central axis, and the diaphragm includes a radiating surface facing the acoustic opening. An innermost conductive trace on the diaphragm extends around a central region of the radiating surface within a magnetic flux of the magnet such that no conductive traces are on the central region. A radial distance between the innermost conductive trace and the mounting profile is less than another radial distance between the innermost conductive trace and the central axis. Accordingly, an excursion range of the diaphragm along the central axis is greater than a gap distance between the conductive trace and the magnet. Other aspects are also described and claimed.

    FLAT TRANSDUCER FOR SURFACE ACTUATION

    公开(公告)号:US20210099807A1

    公开(公告)日:2021-04-01

    申请号:US17119567

    申请日:2020-12-11

    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.

    CONTINUOUS SURROUND
    7.
    发明申请
    CONTINUOUS SURROUND 审中-公开

    公开(公告)号:US20190082262A1

    公开(公告)日:2019-03-14

    申请号:US15835365

    申请日:2017-12-07

    Applicant: Apple Inc.

    Abstract: A transducer assembly including a frame, a diaphragm positioned within the frame, a surround connecting the diaphragm to the frame, the surround having a corner section and a plurality of corrugations formed within the corner section, wherein each corrugation of the plurality of corrugations comprises a length dimension perpendicular to a line of maximum stress intersecting a radial axis of the corner section, a voice coil extending from one side of the diaphragm and a magnet assembly having a magnetic gap aligned with the voice coil.

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