To provide strike structure for an impact tool for generating sufficient fastening torque, and inhibiting the generation of an uncomfortable abnormal sound, without changing the size of an impact tool.
In this strike structure for an impact tool for intermittently strike the claw parts 61 of a hammer 6 rotated by a drive part, to the blade parts 91 of an action part 9 rotating a tool, in a direction for rotating the hammer 6 to rotate the action part; at least one side strike contact parts 611b and 611d of the claw parts 61 and 61 or the blade parts 91 and 91 are formed so as to dot- or line-contact to another side strike contact parts 911b and 911d. The claw parts 61 are made to strike the blade parts 91 at positions in the rotation radius of the hammer 6 and the section of the vibration mode of the blade parts 91.
TAKARAYAMA YASUHIRO
MORIMOTO MITSUKI
