Sanyo Electric Co., Ltd.

Toshiki Nakasho

Shoichi Toya

Eiji Satsuma

Koichi Inoue

Takuo Nomi

Hideyo Morita

Kyozo Terao

Yasunari Mizoguchi

A battery pack, instead of size AA batteries, is loaded in a battery storage compartment of an electronic device. The battery pack includes a battery casing, a plurality of size AAA batteries, a battery holder, a circuit board, and an induction coil electromagnetically connected to a primary coil of a battery charger cradle. The size AAA batteries are accommodated in the battery casing in a spaced-apart manner where a distance between longitudinal axes of the size AAA batteries is larger than a distance between longitudinal axes of the size AA batteries loaded in the battery storage compartment, and a storage space is defined between the adjacent size AAA batteries. With an electronic component, mounted on the circuit board, being disposed in the storage space, the battery pack accommodates the size AAA batteries, the battery holder, the circuit board, and the induction coil in a mutually layered state in the battery casing.

Substitute battery pack including a case to accommodate a smaller battery type with an induction coil to facilitate charging

A pocketable body warmer includes: a metallic exterior casing with a metal plate being formed in the shape of a tube having a closed bottom end and an open opposite end; and a plastic interior casing with an outer contour being formed to be inserted in the metallic exterior casing. The interior casing is provided with a battery storage portion and a battery is loaded in the battery storage portion. Also, a heater is thermally connected to the metallic exterior casing for heating the metallic exterior casing.

Pocketable body warmer

The battery charger is provided with a holding cavitythat allows a first rectangular battery packand a second rectangular battery packto be loaded in a detachable fashion. The holding cavity has a rectangular opening and has first charging terminalsA to contact first rectangular battery pack electrode terminals, and second charging terminalsB to contact second rectangular battery packelectrode terminalsestablished on a first perimeter wallA and second perimeter wallB, which are perpendicular. The battery charger charges the first rectangular battery pack through the first charging terminals when it is loaded in the holding cavity with electrode terminalsin contact with the first charging terminals. The battery charger charges the second rectangular battery pack through the second charging terminals when it is loaded in the holding cavity with electrode terminals in contact with the second charging terminals.

Battery charger for two types of rectangular battery packs

Mobile electronic equipment incorporating an induction coil and a battery; and a battery charger cradle for recharging the battery in the mobile electronic equipment. Regarding the charger cradle, a bottom surface of a mounting portion is curved in a U-grooved shape, and a primary coil is incorporated inside the U-grooved bottom surface, with the primary coil being connected to a power source. Regarding the mobile equipment, its rear surface placed on the mounting portion of the charger cradle is curved to match with the U-grooved bottom surface, and the induction coil is incorporated inside the curved rear surface. When the mobile equipment is placed on the mounting portion of the charger cradle, the electric power is carried from the primary coil to the induction coil which are electromagnetically coupled with each other, and the battery in the mobile equipment is recharged by the electric power induced to the induction coil.

Mobile electronic equipment and battery charger cradle

An electrical device includes a device body and a conversion plug. An AC plug is connected to an outlet with the conversion plug being detached. The conversion plug is connected to an outlet with a different shape with the conversion plug being connected to the AC plug. The AC plug includes an insulating pivot mount that has a pair of plug blades and is connected to the device body. The insulating pivot mount of the AC plug is provided with a retaining recessed portion that opens on the surface side of the device body. The conversion plug includes a retaining hook that is retained to the retaining recessed portion disposed in the insulating pivot mount of the AC plug. The conversion plug is connected to the device body via the AC plug in a state where the retaining hook is retained to the retaining recessed portion, and the plug blades are inserted into plug insertion portions.

Electrical device

A battery charger includes a temperature detection portion that comes in contact with a battery detachably mounted in a battery pocket and detects its battery temperature, and a charge circuit that controls charge of the battery based on the battery temperature detected by the temperature detection portion. The temperature detection portion includes a heat conduction plate and a temperature sensor. The heat conduction plate includes a pair of upper and lower sandwich plates that sandwich the temperature sensor, and an elastic connection arm that connects the upper and lower sandwich plates at a first end side, and an interlock portion that couples the upper and lower sandwich plates at a second end side opposite to the first end side. The elastic connection arm connects first ends of the upper and lower sandwich plates, and the interlock portion couples second ends of the upper and lower sandwich plates. Thus, the upper and lower sandwich plates sandwich and fasten the temperature sensor.

Battery charger having temperature detection portion for detecting battery temperature

The battery charger is provided with temperature detection sectionsto contact and detect the temperature of AA batteriesA and AAA batteriesB loaded in a battery pocket, and a charging circuit to detect battery temperature and control batterycharging. The battery charger is provided with AA batteryA holders, which are circular openingsin the case, and AAA batteryB holders, which are flexible arches. An AAA batteryB is inserted into a flexible archand retained in a fixed position in the battery pocket. An AA batteryA is not inserted into a flexible arch, but rather moves the flexible archcausing it to incline, and is inserted into a circular openingfor retention in a fixed position in the battery pocket. The battery charger charges batteriesset in fixed positions in the battery pocketwhile detecting batterytemperature via the temperature detection sections

Growing community of inventors

Sumoto, Japan

Toshiki Nakasho