US 11,878,396 B2
Impact rotary tool
Fumiaki Sawano, Mie (JP); Hiroaki Murakami, Mie (JP); Motoharu Muto, Mie (JP); and Masanori Nakamoto, Mie (JP)
Filed by Panasonic Holdings Corporation, Osaka (JP)
Filed on Nov. 17, 2022, as Appl. No. 17/989,392.
Claims priority of application No. 2021-188797 (JP), filed on Nov. 19, 2021.
Prior Publication US 2023/0158648 A1, May 25, 2023
Int. Cl. B25B 21/00 (2006.01); B25B 23/147 (2006.01); B25B 21/02 (2006.01)
CPC B25B 23/1475 (2013.01) [B25B 21/02 (2013.01)] 6 Claims
OG exemplary drawing
1. An impact rotary tool comprising:
a motor;
a hammer configured to receive rotational force around an axis from the motor and output striking rotational force obtained by converting part of the rotational force into striking force around the axis;
an anvil to which a tip tool is to be attached, the anvil being configured to rotate, together with the tip tool, around the axis in response to the striking rotational force received from the hammer;
a sensor disposed in a vicinity of the anvil and configured to sense a change in a state of the anvil, the change being according to the striking rotational force;
a circuit board configured to receive a sensing result by the sensor; and
an isolator isolating contact portions of the hammer and the anvil from at least the circuit board, wherein
the isolator includes a housing covering the contact portions and the sensor,
the circuit board is fixed to an outer surface of the housing, and
the sensor and the circuit board are connected to each other via a lead line.