Electromagnetic transducer
AssigneesAac Acoustic Technologies (Shenzhen) Co., Ltd., American Audio Components Inc.
InventorsLin-Zhen Li, Suo-He Wei
Life of this patent
Estimating the term…
Abstract
A multifunctional electromagnetic transducer includes a bracket, a vibrating unit including a magnetic circuit part receiving in the bracket, and a plurality of helical wound springs assembled to the bracket for sustaining the magnetic circuit part. The magnetic circuit part defines a pole plate, a first magnet disposed at a center portion of the pole plate, and a plurality of second magnets surrounding the first magnet and forming a magnetic gap corporately with the first magnet. Each of the second magnets forms a receiving gap corporately with an adjacent second magnet. A voice coil is partially inserted into the magnetic gap.
Claims11
A multifunctional electromagnetic transducer, comprising:
- a bracket ;
- a vibrating unit receiving in the bracket and including a magnetic circuit part with a magnetic gap, the magnetic circuit part including a pole plate, a first magnet fixed at a central portion of the pole plate, a plurality of second magnets disposed surrounding the first magnet;
- a voice coil partially inserted into the magnetic gap;
- an assistant part assembled to the bracket for suspending the magnetic circuit part in the bracket;
- wherein
- the assistant part includes a plurality of helical wound springs defining a retaining end assembled to an inner face of the bracket, a connecting end attached to the vibrating unit, and a helical spring coil extending from the retaining end to the connecting end, the helical wound spring being capable of deformations along a direction parallel to the vibrating direction of the vibrating unit, and along a direction perpendicular to the vibrating direction;
- each of the second magnets forms a receiving gap corporately with an adjacent second magnet for receiving a corresponding helical wound spring.
A multifunctional electromagnetic transducer, comprising:
- a bracket ;
- a vibrating unit receiving in the bracket and including a magnetic circuit part with a magnetic gap, the magnetic circuit part including a pole plate, a first magnet disposed on the pole plate, a plurality of second magnets surrounding the first magnet;
- an assistant part assembled to the bracket for suspending the magnetic circuit part in the bracket;
- a diaphragm supported by the bracket;
- a voice coil directly or indirectly attached to the diaphragm and partly inserted into the magnetic gap;
- wherein
- the assistant part includes a plurality of helical wound springs defining a retaining end assembled to an inner face of the bracket a connecting end attached to the vibrating unit, and a helical spring coil extending from the retaining end to the connecting end;
- each of the second magnets is forming a receiving gap corporately with an adjacent second magnet, each of the receiving gaps receives one helical wound spring.
A multifunctional electromagnetic transducer, comprising:
- a bracket with an inner face;
- a vibrating unit vibrating along a vibrating direction and having a magnetic circuit part with a receiving gap and a plurality of receiving gaps, the magnetic circuit part including a first magnet and a plurality of second magnets surrounding the first magnet;
- a voice coil actuating the vibrating unit to vibrate along the vibrating direction;
- wherein
- each of receiving gaps formed by two adjacent second magnets for receiving a helical wound spring therein, each of the helical wound spring being capable of deformations along the vibrating direction and along a direction perpendicular to the vibrating direction.
Dependencies are inferred from the claim text.