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US 12,010,498 B2Granted
Speaker
AssigneeAlps Alpine Co., Ltd.
InventorsHaruki Uesugi, Kei Tanabe, Yusuke Yoshida
Life of this patent
Estimating the term…
Abstract
An outer structure of a magnetic circuit is held inside a holder recess of a magnetic circuit holder of a frame. A pressing portion is screw-fixed to a mounting surface of the magnetic circuit holder. Elastically deformable pressing arms are formed at the pressing portion, and the pressing arms press a restriction surface of the outer structure of the magnetic circuit.
Claims19
A speaker comprising:
- a frame;
- a diaphragm supported by the frame so as to enable the diaphragm to vibrate;
- a coil that drives the diaphragm to vibrate;
- and
- a magnetic circuit that is positioned rearward relative to the diaphragm and applies a magnetic field to the coil, wherein:
- the frame has a magnetic circuit holder in which the magnetic circuit is held,
- the magnetic circuit holder has a mounting surface that faces frontward,
- the magnetic circuit has a restriction surface that faces frontward,
- the magnetic circuit holder has pressing arms that are elastically deformable and that are disposed so as to be in contact with the restriction surface,
- contact portions between respective pressing arms and the restriction surface are disposed with spacing between each other;
- a pressing portion has a fixation portion that is fixed to the mounting surface, and
- the pressing arms and the fixation portion are disposed such that a radial line that extends from a center of the magnetic circuit and on which the fixation portion of the pressing portion is positioned does not overlap radial lines that extend from the center of the magnetic circuit and on which respective pressing arms are positioned.
9 more elements
A speaker comprising:
- a frame;
- a diaphragm supported by the frame so as to enable the diaphragm to vibrate;
- a coil that drives the diaphragm to vibrate;
- and
- a magnetic circuit that is positioned rearward relative to the diaphragm and applies a magnetic field to the coil, wherein:
- the frame has a magnetic circuit holder in which the magnetic circuit is held,
- the magnetic circuit has a restriction surface that faces frontward,
- the magnetic circuit holder has a mounting surface that faces frontward,
- a pressing portion has a screw-fixation portion that is screw-fixed to the mounting surface, the pressing portion being integrally formed with pressing arms that are elastically deformable and that are disposed so as to be in contact with the restriction surface,
- contact portions between respective pressing arms and the restriction surface are disposed with spacing between each other, and
- the pressing arms and the screw-fixation portion are disposed such that a radial line that extends from a center of the magnetic circuit and on which the screw-fixation portion of the pressing portion is positioned does not overlap radial lines that extend from the center of the magnetic circuit and on which respective pressing arms are positioned.
8 more elements
Dependencies are inferred from the claim text.