초록 ▼

A battery-charging system is provided that does not require removal of batteries from an impact screwdriver (1) for recharging. The battery-charging system includes the impact screwdriver and a charger (20). The impact screwdriver (1) has a nose (3a) to which a tool bit is attached. The impact screw

A battery-charging system is provided that does not require removal of batteries from an impact screwdriver (1) for recharging. The battery-charging system includes the impact screwdriver and a charger (20). The impact screwdriver (1) has a nose (3a) to which a tool bit is attached. The impact screwdriver additionally includes a grip handle (4) containing a battery unit (5) whose terminals (10) for recharging are exposed in a surface of a protrusion (7) of the grip handle. The charger (20) includes a charger circuit encased in an enclosure having a base (21) covered with a housing (22). The housing of the charger is provided with a first receiving recess (29) which can receive the nose (3a) of the screwdriver and a second receiving recess (30) which can receive the protrusion (7) of the screwdriver. The system additionally includes a pair of charge terminals of the charger circuit that resiliently projects into the second receiving recess (30). The charger circuit terminals are brought into electrical contact with the corresponding terminals in the protrusion of the impact screwdriver when the screwdriver is set on the charger. While the battery unit is charged, the entire impact screwdriver (1), not the battery unit alone, is set on the charger (20) with the nose placed in the first receiving recess and the protrusion in the second receiving recess.

대표청구항 ▼

[ What is claimed is:] [1.] A power tool charging system, comprising:an electric power tool includingat least one rechargeable battery,a handle containing the at least one battery,a plurality of first terminals provided on the handle for passing currents for charging the at least one battery,a nose

[ What is claimed is:] [1.] A power tool charging system, comprising:an electric power tool includingat least one rechargeable battery,a handle containing the at least one battery,a plurality of first terminals provided on the handle for passing currents for charging the at least one battery,a nose to which a tool bit is attached, anda motor powered by the at least one battery for driving the nose; anda charger on which the electric power tool is set for charging the at least one battery, the charger includingfirst means for receiving the handle of the electric power tool,second means for receiving the nose of the electric power tool, anda first recess disposed between the first and second receiving means, the first recess configured to provide clearance around the handle when the electric power tool is set on the charger,a plurality of second terminals that are connected to a charger circuit and are provided in the first receiving means, the second terminals establishing electrical contact with the first terminals when the electric power tool is set on the charger, whereby the charger is capable of charging at least one battery of the electric power tool when the handle and the nose are placed in the first and second receiving means, respectively.