Patent ID: 7766097

Claim:
A portable electric power tool powered by a battery pack, comprising: a motor that drives a tool bit; a housing that houses the motor; at least one elastic member that is supported by the housing; and a battery pack holder that is separated from the housing and is supported by the elastic member, wherein the battery pack holder includes an engaging portion that detachably engages with a case of the battery pack and connecting terminals that are electrically connected to output terminals of the battery pack attached by the engaging portion, a projecting portion is formed on either the housing or the battery pack holder, and an insertion opening into which the projecting portion is inserted is formed on the other of the housing or the battery pack holder; a flange portion is formed on a side surface of either the projecting portion or the insertion opening, and a groove portion that houses the flange portion is formed on a side surface of the other of the projecting portion or the insertion opening; and the at least one elastic member is arranged between the flange portion and the groove portion.