Title:
SOUND PRODUCTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/049846
Kind Code:
A1
Abstract:
Provided is a sound production device which, as a sound production device enabling easy and accurate coil alignment and having improved ease of assembly, is provided with: a diaphragm; an armature that is formed from a magnetic material; a magnet that faces the armature; a yoke that supports the magnet; a coil; a transmission body that transmits vibration of the armature to the diaphragm; and a support member that holds the coil, wherein the support member is provided with a positioning part and a biasing part, and the coil is elastically biased toward the positioning part by the biasing part, and positioned and held between the positioning part and the biasing part.
Inventors:
NUMATA TAISHI (JP)
AOKI DAIGO (JP)
TSUCHIYA AKIHIRO (JP)
IGUCHI SHUJI (JP)
AOKI DAIGO (JP)
TSUCHIYA AKIHIRO (JP)
IGUCHI SHUJI (JP)
Application Number:
PCT/JP2018/032696
Publication Date:
March 14, 2019
Filing Date:
September 04, 2018
Export Citation:
Assignee:
ALPS ALPINE CO LTD (JP)
International Classes:
H04R11/02
Domestic Patent References:
| WO2017018074A1 | 2017-02-02 |
Foreign References:
| JP2006186615A | 2006-07-13 | |||
| JP2016076980A | 2016-05-12 |
Attorney, Agent or Firm:
OKUBO, Katsuyuki (JP)
Download PDF: