BATTERY DRIVING DEVICE

To inhibit rattling according to a type of a battery.SOLUTION: A battery driving device includes: a battery pack 14 in which multiple batteries 11 arranged in parallel to each other are collectively packed by a film member 13; a drive component 20 which is supplied with electric power of the batteries 11 to be driven; a housing member 30 provided with a housing chamber 30b which houses the battery pack 14 and the drive component 20 inserted through an insertion port 30a; and a cover member 40 assembled to the housing member 30 and configured to close the insertion port 30a at a closed position. The film member 13 has a float part 13a which may exist in a floating state in a space between the adjacent batteries 11. The cover member 40 has a battery pressing part 47 which protrudes from an inner wall and presses the battery pack 14 to a bottom wall 31 of the housing chamber 30b at the closed position. The battery pressing part 47 has pressing projections 47a which cause a pressing force to act on the float part 13a at the closed position and presses the battery pack 14 to the bottom wall 31 by the pressing force.SELECTED DRAWING: Figure 8 【課題】電池に応じたガタ付き抑制を図ること。【解決手段】並列に配置された複数本の電池１１がフィルム部材１３で一纏めに包まれた電池パック１４と、電池１１の電力が供給されて駆動する駆動部品２０と、挿入口３０ａから挿入された電池パック１４及び駆動部品２０を収容する収容室３０ｂが設けられた収容部材３０と、収容部材３０に組み付けられ、かつ、閉位置で挿入口３０ａを塞ぐカバー部材４０と、を備え、フィルム部材１３は、隣り合う電池１１の間の空間に浮いた状態で存在し得るフロート部１３ａを有し、カバー部材４０は、内壁から突出させ、かつ、閉位置で電池パック１４を収容室３０ｂの底壁３１に押し付ける電池押え部４７を有し、電池押え部４７は、閉位置でフロート部１３ａに押圧力を作用させる突起であり、押圧力によって電池パック１４を底壁３１に押し付ける押圧突起４７ａを有すること。【選択図】図８