| 摘要 |
PROBLEM TO BE SOLVED: To make easy assembling of a locking structure by providing a frame part with at least one recess for receiving a locking element at the vicinity of rail/groove structure of a tool housing, and mounting a lever-like operation elements to the sideway of the recess so as to be swingable. SOLUTION: A motor housing of a tool housing is formed to be like a shape of barrel opened toward a rear end. In a rearward area of a frame part 15 of the housing 1 a connection sleeve 14 is formed integrally therewith while in a forward area thereof two blind-hole-like recesses is formed, and locking elements (latch elements) 18, 19 are inserted through compression springs 20, 21. A slit-like through opening is formed at an outer side wall of each recess, and to each of them each of inner arms 26, 27 of operation elements 22, 23 is made to face. Through swinging operation of each operation element 22 or 23, a battery pack 50 with both side grooves 54 engaged with an inner rail 37 of covers 9, 10 is locked with outer arms 24, 25. |
