Patent attributes
It is an object of the invention to provide a technique for adapting to the length of a tool bit mounted to a power tool when tool bits of different lengths are selectively used by replacement to perform an operation, in a dust collecting device for collecting dust generated by operation of the power tool. A dust collecting device 210 is attached to a power tool 101 and collects dust generated by operation. The dust collecting device 210 includes a dust collecting part that covers a tool bit 119 over a predetermined range in the axial direction and collects dust generated by operation. The dust collecting part is formed in one of a first form and a second form which is arbitrarily selected. In the first form, the dust collecting part is formed by a dust collecting part component 221 which has a tool bit covering part 223 having a predetermined inside diameter and a fitting part 227 connected to the tool bit covering part 223, while, in the second form, the dust collecting part is formed by connecting a plurality of the dust collecting part components 221 via the fitting part 227 in the axial direction.
