Hand tool machine for construction industry, has mode switchable rotary switch that meshes with tooth of switch cam shaft of one transformation module e.g. ratchet, in switching angle to select operation mode of rotary tool

摘要

The machine has a propelling engine (2) to drive a rotary tool (3) of one of the two transformation modules e.g. ratchet, through a mode switchable rotary switch (6). The switch rotates around a switch shaft (S) and meshes with a tooth of a switch cam shaft of the module in a switching angle to select the operation mode of the tool. The cam shaft is arranged perpendicularly to a rotary tool axle (A).