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Patent Searching and Data


Title:
SOUND GENERATION DEVICE AND PRODUCTION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/034015
Kind Code:
A1
Abstract:
[Problem] To provide: a sound generation device whereby a coil can be easily and securely fixed to a yoke, in a drive mechanism; and a production method therefor. [Solution] A first yoke 21 and a second yoke 22 are combined and a first magnet 24 and a second magnet 25 are incorporated, to assemble a magnetic field generation unit 20. A support plate 28 is fixed to a downwards-facing outer surface 22c of the second yoke 22 and a coil 27 is adhered and fixed on to the support plate 28 via an adhesive layer 29. An armature 32 inserts a movable section 32a thereof into a gap between the coil 27 and the magnets 24, 25 and fixes a base section 32b thereof to an outer surface 21b of the first yoke 21. The outer surface 21b of the first yoke 21 is then fixed to a frame 5.

Inventors:
SATO, Kiyoshi (1-7, Yukigaya-otsukamachi, Ota-k, Tokyo 01, 〒1458501, JP)
Application Number:
JP2017/008238
Publication Date:
February 22, 2018
Filing Date:
March 02, 2017
Export Citation:
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Assignee:
ALPS ELECTRIC CO., LTD. (1-7 Yukigaya-otsukamachi, Ota-ku Tokyo, 01, 〒1458501, JP)
International Classes:
H04R11/02; H04R31/00
Foreign References:
JPH0373099U1991-07-23
JP2012501609A2012-01-19
Attorney, Agent or Firm:
NOZAKI, Teruo (Oak Ikebukuro Building 3F, 1-21-11 Higashi-Ikebukuro Toshima-k, Tokyo 13, 〒1700013, JP)
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