| 摘要 |
A miniature voice coil including integrated coupling coil for electro-magnetic coupling with T-coil of hearing aid is provided to secure a safe attach to a partition by increasing a width of a voice coil part. A miniature electrical-acoustical transducer comprises a voice coil and a magnetic device. The voice coil is adhered to a partition. The magnetic device includes an air gap. The voice coil includes a first voice coil part(1) and a second voice coil part(2). The first voice coil part is positioned within the air gap of the magnetic device, and includes a main extension part to a direction which is materially parallel to a moving direction of the partition of the miniature transducer. The second voice coil part is adhered to the partition of the miniature transducer, and is positioned outside the air gap of the magnetic device of the miniature transducer. A thickness of the second voice coil part is 2 to 5 times than a thickness of the first voice coil part.
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