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US 2019/0094282 A1Published application
Electromagnetic sensor
AssigneeHon Hai Precision Industry Co., Ltd.
InventorsHUNG-YU WU, CHIN-HAI HSU
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Abstract
An electromagnetic sensor includes a first magnetic pack unit and a first magnetic unit. The first magnetic unit forms a first magnetic pack, a second magnetic pack, and a third magnetic pack in a first direction. The structure of the electromagnetic sensor enables even and uniform distribution of the magnetic field on the electrode and provides a good sound effect under different frequencies.
Claims19
An electromagnetic sensor comprising:
- a first diaphragm unit comprising a first diaphragm;
- a first magnet group defined on a side of the first diaphragm, and the first magnet group comprises a first magnetic group, a second magnetic group, and a third magnetic group;
- wherein a magnetic axis direction of the first magnetic group is perpendicular to the first diaphragm;
- a magnetic axis direction of the second first magnetic group is perpendicular to the magnetic axis direction of the first magnetic group, and points toward to a third magnetic group;
- and a magnetic axis direction of the third magnetic group is perpendicular to the first diaphragm, and is different from the magnetic axis direction of the first magnetic group by 180 degrees;
- and
- a plurality of electrode disposed on a first surface of the first diaphragm and corresponded to the second magnetic group;
- wherein when current passes through each electrode, the first diaphragm and the air surrounding vibrate and emit sound.
5 more elements
An electromagnetic sensor comprising:
- a first diaphragm unit comprising a first diaphragm;
- a first magnet group defined on a side of the first diaphragm, and the first magnet group comprises a first magnetic group, a second magnetic group, and a third magnetic group;
- wherein a magnetic axis direction of the first magnetic group is perpendicular to the first diaphragm;
- a magnetic axis direction of the second first magnetic group is perpendicular to the magnetic axis direction of the first magnetic group, and points toward to a third magnetic group;
- and a magnetic axis direction of the third magnetic group is perpendicular to the first diaphragm, and is different from the magnetic axis direction of the first magnetic group by 180 degrees;
- a magnetic axis direction of the fourth magnetic group is perpendicular to the magnetic axis direction of the third magnetic group, and points toward to the third magnetic group;
- a magnetic axis direction of the fifth magnetic group is perpendicular to the first diaphragm, and is the same as the magnetic axis direction of the first magnetic group;
- a plurality of electrode disposed on a first surface of the first diaphragm and corresponded to the second magnetic group;
- wherein when current passes through each electrode, the first diaphragm and the air surrounding vibrate and emit sound.
6 more elements
Dependencies are inferred from the claim text.