Makita Corporation

Junichi Murakami

Tomonori Kawase

Hideyuki Taga

Wataru Suzuki

Tatsuya Kobayashi

Hisakazu Okabayashi

Junya Yamaguchi

Masaya Mizutani

Shinya Mizutani

Makihiro Kobayashi

Battery

A charger may include: a casing including an air inlet and an air outlet; an inner wall extending from an inner surface of the casing and defining an accommodating space between the inner surface of the casing and the inner wall; and a centrifugal fan including an air feed port and disposed in the accommodating space. The air outlet may be disposed to face the air feed port. The air inlet may be disposed closer to the centrifugal fan than the inner wall is. In a direction of a rotation axis of the centrifugal fan, a width between the inner wall and the centrifugal fan may be less than or equal to 150% of a width of the centrifugal fan.

Charger

Battery charger

A battery pack disclosed herein is configured to be attached to a battery pack mount by moving the same downward with respect to the battery pack mount and be detached from the battery pack mount by moving the same upward with respect to the battery pack mount. The battery pack comprises a casing. The casing includes a first guide groove and a second guide groove on a side surface of the casing in a left-right direction, with the first and second guide grooves each extending upward from a lower end of the side surface. A length of the first guide groove in an up-down direction and a length of the second guide groove in the up-down direction are different.

Battery pack

An electrical device may be provided with: a housing to which a battery pack is attached detachably by sliding the battery pack in a sliding direction; a battery connection terminal configured to be electrically connected to the battery pack attached to the housing; and a terminal cover configured to move between a protection position for protecting the battery connection terminal and an exposure position for exposing the battery connection terminal. The housing may include a cover rail extending along the sliding direction. The terminal cover may include: a cover body having a shape that at least partially covers the battery connection terminal; and a hook formed integrally with the cover body, and the hook is engaged with the cover rail so as to slide in the sliding direction.

Electrical device

A charger () includes connecting parts (), a main converter (), charging paths (Cpa, Cpb), switching elements (SWa, SWb), and a charging-control part (). A first battery (Ba) having a first mounting part () and a second battery (Bb) having a second, different mounting part () are respectively mountable on the connecting parts (). The charging paths (Cpa, Cpb) respectively connect the main converter () to the connecting parts (). The switching elements (SWa, SWb) respectively connect or disconnect the charging paths (Cpa, Cpb) to/from the main converter (). The charging-control part () selects one of the batteries (Ba, Bb) as the charging target and sets the charging path, to which the charging target (Ba, Bb) is connected, to the connected state. Then, the charger () charges the charging target to a predetermined voltage using a charging current suited to the charging target.

Growing community of inventors

Anjo, Japan

Junichi Murakami