Title:
発音装置およびその製造方法
Document Type and Number:
Japanese Patent JP6629460
Kind Code:
B2
Abstract:
A sound generating device includes an armature having a fixing part facing a first direction and overlapped on an outer surface of a yoke, an extension part extending from the fixing part in a second direction opposite to the first direction, and a movable part bent from the extension part and extending in the first direction, inserted into a coil to oppose a magnet, and connected to an oscillator. The fixing part includes two opposing edge parts that are spot-welded to the outer surface of the yoke at two reference weld areas separated in a perpendicular direction that is perpendicular to the first and second directions. The two opposing edge parts of the fixing part and the outer surface of the yoke are spot-welded at at least one additional weld area at a position separated in the first direction from the reference weld areas.
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Inventors:
Kiyoshi Sato
Tadashi Numata
Daigo Aoki
Yutaka Sato
Tadashi Numata
Daigo Aoki
Yutaka Sato
Application Number:
JP2018547185A
Publication Date:
January 15, 2020
Filing Date:
September 13, 2017
Export Citation:
Assignee:
Alps Alpine Co., Ltd.
International Classes:
H04R11/02
Domestic Patent References:
| JP6014787B1 | ||||
| JP201355527A | ||||
| JP5899098A |
Foreign References:
| US6654477 |
Attorney, Agent or Firm:
Tadashige Ito
Tadahiko Ito
Tadahiko Ito