Hitachi Koki Co., Ltd.

Kousei Yokoyama

Hiroyuki Hanawa

Keita Saitou

Kazuhiko Funabashi

Katsuhiro Oomori

Yoshihiro Nakano

Shota Takeuchi

Itsushi Ogawa

When a battery pack is mounted to a battery attachment part, the battery pack is slid in a horizontal direction (a direction substantially perpendicular to an upper-lower direction) with respect to the housing, e.g., along a long longitudinal direction of a battery-side rail part, such that tool-side rail parts of the battery attachment part are introduced into engaging recess portions of the battery pack. Thereby, the elastic members are fitted and compressed in the battery-side rail parts and the tool-side rail parts, so that the elastic members press upwards the battery-side rail part (e.g., the battery pack) and press downwards the tool-side rail parts (e.g., the housing). That is, the elastic members press the battery pack and the housing such that they come close to each other.

Electric tool and battery pack for the electric tool

A battery packincludes a housing, a group of cells, a board, a plurality of second terminals, and a cover. An openingis formed in the housing. The boardhas a terminal arranging partA. A plurality of the second terminalsare arranged on the terminal arranging partA of the board. The coverhas a plate-like shape, and covers an area of the boardwhich is positioned between the terminal arranging partA and the opening

Battery pack and motor-driven tool using the same

A power tool, having attached thereto a battery device including one or a plurality of cell assemblies, includes a motor which is supplied with a DC current from the battery device, a switching element which controls a drive and a stop of the motor, means which detects a number of cell assemblies, and control means which controls the switching element in such a way as to stop the drive of the motor when the number of cell assemblies is smaller than a prescribed value.

Cordless power tool and battery device used for same

A battery pack () includes a housing (), a group of cells (), a board (), a plurality of second terminals (), and a cover (). An opening () is formed in the housing (). The board () has a terminal arranging part (A). A plurality of the second terminals () are arranged on the terminal arranging part (A) of the board (). The cover () has a plate-like shape, and covers an area of the board () which is positioned between the terminal arranging part (A) and the opening ().

Growing community of inventors

Ibaraki, Japan

Kousei Yokoyama