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1. (WO2016052022) ELECTROACOUSTIC TRANSDUCER

Pub. No.:    WO/2016/052022    International Application No.:    PCT/JP2015/074196
Publication Date: Fri Apr 08 01:59:59 CEST 2016 International Filing Date: Fri Aug 28 01:59:59 CEST 2015
IPC: H04R 7/14
H04R 9/02
H04R 9/04
Applicants: YAMAHA CORPORATION
ヤマハ株式会社
Inventors: NOZAKI, Akihiko
野崎 昭彦
Title: ELECTROACOUSTIC TRANSDUCER
Abstract:
The present invention improves the strength and durability of a mounting portion to a voice coil in a vibrating body such as a riffel speaker in which a pair of vertically split cylindrical surfaces are disposed in parallel, and further improves a vibration transmission characteristic between the voice coil and the vibrating body. An electroacoustic transducer is provided with: a vibrating body 1 in which a pair of vertically split cylindrical surfaces 15 are formed in parallel and a valley part 16 is formed between adjacent respective one sides of the vertically split cylindrical surfaces 15; a conversion part 2 comprising a voice coil 20 and a magnet mechanism 21 which perform a conversion between vibration along the depth direction of the valley part 16 of the vibrating body 1 and an electric signal corresponding to the vibration; and a support part 35 which supports the vibrating body 1 such that the vibrating body is able to vibrate along the depth direction of the valley part 16. A cylindrical part 13 that couples the vibrating body and the voice coil 20 is provided in the depth direction of the valley part 16 in the middle of the extension of the valley part 16 of the vibrating body 1.