Dust collecting device

A dust collecting device, which is attached to a power tool that performs a predetermined operation on a workpiece by driving a tool bit coupled to a front end region of a tool body, and collects dust generated by operation, comprising:

• a dust collecting part that covers the tool bit over a predetermined range in an axial direction and collects dust generated by operation,
• wherein the dust collecting part comprises (i) a plurality of the dust collecting part components, each of the plurality of the dust collecting part components having a tool bit covering part having a predetermined inside diameter and (ii) a plurality of fitting parts, which are formed separately from the plurality of dust collecting part components and are used to connect the plurality of the dust collecting part components, each of the plurality of fitting parts having a substantially constant inside diameter, and the dust collecting part being structured such that the plurality of the dust collecting part components being detachably connected in the axial direction by placing a fitting part between two dust collecting part components, the fitting part being detachably attached to each of the two dust collecting part components.

A dust collecting device, which is attached to a power tool that performs a predetermined operation on a workpiece by driving a tool bit coupled to a front end region of a tool body, and collects dust generated by operation, comprising:

• a dust collecting part that covers the tool bit over a predetermined range in an axial direction and collects dust generated by operation, and
• a dust collecting device body that has a cylindrical hollow shape extending in the axial direction, the one end of the dust collecting device body being detachably attached to the power tool, and the dust collecting device body having an opening that connects an outer surface and an inner surface, the opening is configured to receive a dust collecting hose to which the dust is guided,
• wherein the dust collecting part comprises (i) a dust collecting part component, which has a tool bit covering part having a predetermined inside diameter, one end of the dust collecting part component being configured to be detachably attached to another end of the dust collecting device body, and (ii) a fitting part, which has a substantially constant inside diameter, the fitting part being detachably attached to another end of the dust collecting part component such that the fitting part is configured to form a suction port and is configured to be detachably attached to another dust collecting part component.