Kabushiki Kaisha Sankyo Seiki Seisakusho

Shigeyoshi Takagi

Makoto Orii

Mutsumi Aruga

Masaki Yamamoto

Tadayuki Itakura

A device for electronically generating a sound according to the present invention includes an integrated circuit chip producing electronic signals corresponding to a desired melody, a switch controlling the ON and OFF states of the integrated circuit chip, a battery powering the integrated circuit chip, a sound generator having a dish-shaped vibrating plate and producing sounds responsive to the electronic signals, and a circuit pattern section having a plurality of lead portions interconnecting the integrated circuit chip, the switch, the battery and the sound generator. The circuit pattern section is formed by punching a conductive metal sheet in a press. Selected ones of the lead portions can advantageously be formed by punching into the battery holder or the switch. According to one aspect of the invention, an acoustic chamber is defined by the sound generator and a cover formed by potting or injection molding. According to another aspect of the invention, a resin seal is formed over the integrated circuit chip. A method for forming the electronic sound generating device is also described.

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Nagano, Japan

Shigeyoshi Takagi