Patent ID: 11878396
Assignee: PANASONIC HOLDINGS CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 3:
4. 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 second housing has one main surface which is open,
the second housing being, at a side of the one main surface which is open, fixed to the outer surface of the first housing with the circuit board being housed in the second housing, and
the circuit board is fixed to the first housing by the outer surface of the first housing and an inner surface of the second housing.