Matsushita Electric Works, Ltd.

Takeshi Tsuchiya

Keizo Ganse

Masahiko Adachi

In a battery charger for an electric appliance powered by an incorporated rechargeable battery such as an electric shaver or electric toothbrush, etc., a charger circuit and charging terminals are incorporated in a casing. The charger circuit supplies a charger current to the rechargeable battery through the charging terminals. The interior of the casing is divided into lower circuit compartment for receiving the charger circuit and an upper terminal compartment by a partition carrying the charging terminals in such a manner as to make a water-tight seal between the circuit and terminal compartments. The charging terminals project into the terminal compartment, are electrically connected to the charger circuit, and also are accessible through individual holes formed in a portion of the casing for connection with the rechargeable battery. Therefore, even if the battery charger is used under a wet conditions, and water flows into the terminal compartment through the holes, water intrusion into the circuit compartment from the terminal compartment is stopped by the water-tight seal.

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Hikone, Japan

Takeshi Tsuchiya