Title:
SOUND PRODUCING DEVICE AND METHOD FOR MANUFACTURING SAME
Document Type and Number:
WIPO Patent Application WO/2018/079113
Kind Code:
A1
Abstract:
According to the present invention, an armature 32has a fixed part 32a, an extending part 32b, a bent part 32c, and a movable part 32d. The moveable part 32d of the armature 32 is inserted into a coil 27 to face magnets 24, 25, and the fixed part 32a overlaps an outer surface 21b of a yoke 21. Two edge parts 32f, 32f of the fixed part 32a and the outer surface 21b of the yoke 21 are subjected to laser spot welding to form welded parts 51, 51, 52, 52 in four locations.
Inventors:
SATO KIYOSHI (JP)
NUMATA TAISHI (JP)
AOKI DAIGO (JP)
SATO YUTAKA (JP)
NUMATA TAISHI (JP)
AOKI DAIGO (JP)
SATO YUTAKA (JP)
Application Number:
PCT/JP2017/033075
Publication Date:
May 03, 2018
Filing Date:
September 13, 2017
Export Citation:
Assignee:
ALPS ELECTRIC CO LTD (JP)
International Classes:
H04R11/02; H04R31/00
Foreign References:
| JP6014787B1 | 2016-10-25 | |||
| JP2013055527A | 2013-03-21 |
Attorney, Agent or Firm:
ITOH, Tadashige et al. (JP)
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