Battery pack
AssigneeMakita Corporation
InventorsHidekazu HAYASHI, Eiji KONDO, Hironori OGURA, Hideyuki TAGA, Kazutoshi OGINO
Life of this patent
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Abstract
A battery pack may include a drainage device provided at a bottom portion of the housing case. The drainage device may include a drain hole communicating between the inside and the outside of the housing case, so that water introduced into the housing case is discharged to the outside of the housing case. The drainage device may be disposed between two of the terminal members that are connected to electrodes of the battery cells.
Claims11
A battery pack configured to be able to be mounted on a tool body of an electric tool as a power source of the electric tool, the battery pack comprising:
- a housing case configured as an outer cover;
- and
- a plurality of battery cells disposed in the housing case,
- wherein the housing case comprises:
- a box-shaped case body defining a bottom portion and having an upper opening,
- an upper cover member configured to close the upper opening,
- a drain hole extending from an inside to an outside of the case body, and
- a foreign material-introduction restricting rib configured to prevent introduction of foreign materials into an inside of the housing case;
- and
- wherein the foreign material-introduction restricting rib is arranged to extend across the drain hole as viewed from an upper side from the inside of the housing case such that the drain hole is kept opened.
A battery pack configured to be able to be mounted on a tool body of an electric tool as a power source of the electric tool, the battery pack comprising:
- a housing case configured as an outer cover;
- and
- a plurality of battery cells disposed in the housing case,
- wherein the housing case has:
- a bottom portion with a drain hole communicating between an inside and an outside of the housing case, and
- a foreign material-introduction restricting rib provided in association with the drain hole and configured to prevent introduction of foreign materials into the inside of the housing case;
- and
- wherein the foreign material-introduction restricting rib is arranged to extend across a shape of an opening of the drain hole at a position inside of the housing case such that the drain hole is kept opened.
A battery pack configured to be able to be mounted on a tool body of an electric tool as a power source of the electric tool, the battery pack comprising:
- a housing case configured as an outer cover;
- and
- a plurality of battery cells disposed in the housing case,
- wherein the housing case comprises:
- a box-shaped case body defining a bottom portion and having an upper opening,
- an upper cover member configured to close the upper opening,
- a drainage functioning configuration extending from an inside to an outside of the case body, and
- a foreign material-introduction restricting rib configured to prevent introduction of foreign materials into an inside of the housing case;
- and
- wherein the foreign material-introduction restricting rib is arranged to extend across the drainage functioning configuration as viewed from an upper side from the inside of the housing case such that the drainage functioning configuration is kept opened.
Dependencies are inferred from the claim text.