Speakers
One or more embodiments of the present disclosure provide a speaker. The speaker may include a diaphragm, a magnetic circuit component, a coil connected to the diaphragm, a bracket arranged around the magnetic circuit component, and a housing. At least part of the coil may be arranged in a magnetic gap formed by the magnetic circuit component, and the coil may drive the diaphragm to vibrate to generate sound after the coil is energized. The diaphragm may include a main-body region and a folded-ring region surround the main-body region. The bracket may be connected to a portion of the folded ring region away from the main-body region, and a plurality of air holes may be provided on the bracket. A pressure relief hole may be provided on the housing. Sound from a back surface of the diaphragm may be transmitted to the pressure relief hole through the plurality of air holes, and the plurality of air holes may at least include a first air hole and a second air hole. A distance from a center of the first air hole to a center of the pressure relief hole may be greater than a distance from a center of the second air hole to the center of the pressure relief hole, and an area of the first air hole may be greater than an area of the second air hole.
1 . A speaker, comprising:
a diaphragm;
a magnetic circuit component;
a coil connected to the diaphragm, wherein at least part of the coil is arranged in a magnetic gap formed by the magnetic circuit component, the coil drives the diaphragm to vibrate to generate sound after the coil being energized, and the diaphragm includes a main-body region and a folded-ring region surrounding the main-body region;
a bracket arranged around the magnetic circuit component, wherein the bracket is connected to a portion of the folded ring region away from the main-body region, and a plurality of air holes are provided on the bracket; and
a housing, a pressure relief hole being provided on the housing, wherein
sound from a back surface of the diaphragm is transmitted to the pressure relief hole through the plurality of air holes,
the plurality of air holes at least includes a first air hole and a second air hole,
a distance from a center of the first air hole to a center of the pressure relief hole is greater than a distance from a center of the second air hole to the center of the pressure relief hole,
an area of the first air hole is greater than an area of the second air hole;
the magnetic circuit component includes an accommodation member; and
a distance between the coil and a side wall of the accommodation member is within a range of 0.1 mm-0.5 mm.
2 . The speaker of claim 1 , wherein a ratio of a total area of the plurality of air holes to an area of a projection of the diaphragm in a vibration direction of the diaphragm is within a range of 0.008-0.3.
3 . The speaker of claim 2 , wherein the area of the projection of the diaphragm in the vibration direction of the diaphragm is within a range of 90 mm 2 -560 mm 2 , and the total area of the plurality of air holes is within a range of 4.54 mm 2 -12.96 mm 2 .
4 . The speaker of claim 1 , wherein
the main-body region includes a first inclined section and a first connecting section connected to the coil,
the first inclined section is attached to a part of the folded-ring region, and
the first inclined section is tilted in a direction away from the coil relative to the first connecting section.
5 . The speaker of claim 4 , wherein the folded-ring region includes an arc-shaped section, and a ratio of a height of the arc-shaped section to a span of the arc-shaped section is within a range of 0.35-0.4.
6 . The speaker of claim 4 , wherein an inclination angle of the first inclined section relative to the first connecting section is within a range of 5°-30°, and the first connecting section is perpendicular to a vibration direction of the diaphragm.
7 . The speaker of claim 4 , wherein
the main-body region includes a dome arranged at an end of the first connecting section far from the first inclined section,
a span of the dome is within a range of 2 mm-8 mm, and
a height of the dome is within a range of 0.7 mm-1.2 mm.
8 . The speaker of claim 7 , wherein a ratio of the height of the dome to the span of the dome is within a range of 0.1-0.3.
9 . The speaker of claim 7 , wherein a thickness of the dome is less than 80 μm in a vibration direction of the diaphragm.
10 . The speaker of claim 9 , wherein the magnetic circuit component includes a magnetic conductive plate and a magnet, wherein
the magnetic conductive plate is arranged between the magnet and the diaphragm,
the magnetic conductive plate is attached to a surface of the magnet, and
a distance between a lowest point of the dome and an upper surface of the magnetic conductive plate is greater than 0.8 mm in the vibration direction of the diaphragm.
11 . The speaker of claim 4 , wherein a minimum distance between the coil and the first inclined section is not less than 0.3 mm.
12 . The speaker of claim 1 , wherein a first part of the bracket is connected to a second connecting section of the folded-ring region.
13 . The speaker of claim 1 , wherein a distance from a bottom of the coil to a bottom of the accommodation member is within a range of 0.8 mm-0.9 mm in a frequency range of 20 Hz-6.1 kHz under an input voltage within 0.1V-0.7V.
14 . The speaker of claim 1 , further comprising a housing, wherein
a ratio of an area of a projection of the diaphragm in a vibration direction of the diaphragm to an area of a projection of the housing in the vibration direction of the diaphragm is not less than 0.5.
15 . The speaker of claim 14 , wherein the ratio of the area of the projection of the diaphragm in the vibration direction of the diaphragm to the area of the projection of the housing in the vibration direction of the diaphragm is within a range of 0.8-0.95.
16 . The speaker of claim 14 , wherein a size of a long axis of the diaphragm is within a range of 13 mm-25 mm, and a size of a short axis of the diaphragm is within a range of 4 mm-13 mm.
17 . The speaker of claim 1 , wherein
the plurality of air holes are provided on a bottom wall of the accommodation member of the magnetic circuit component or on a side wall of the magnetic circuit component that is attached to the bracket.
18 . The speaker of claim 1 , wherein the magnetic circuit component includes a magnetic conductive plate and a magnet, wherein
the magnetic conductive plate is arranged between the magnet and the diaphragm,
the magnetic conductive plate is attached to a surface of the magnet, and
a distance between a center of the coil and a center of the magnetic conductive plate is less than 0.3 mm in a vibration direction of the diaphragm.
19 . The speaker of claim 1 , wherein and a distance between a bottom wall of the coil and a bottom of the accommodation member is within a range of 0.2 mm-4 mm in a vibration direction of the diaphragm.