Patent ID: 11958170
Assignee: MAKITA CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 19:
20. An impact tool comprising:
a brushless motor;
a spindle, which is rotated by the brushless motor;
a hammer, which is held on the spindle;
an anvil, which is impacted in a rotational direction by the hammer and has a quadrangular-column part;
a polymer housing, which houses the brushless motor;
a hammer case, which is connected to the polymer housing and houses the hammer and the spindle;
a bearing composed of an oil-impregnated metal, which is held by the hammer case and rotatably supports the anvil, and
a light unit, which is held on the hammer case and comprises:
a plurality of light-emitting devices that are disposed spaced apart around the anvil,
optical members composed of a first material and coupled to the light unit such that the optical members do not directly contact each other, and
a light cover composed of a second material that differs from the first material, the light cover including a ring-shaped portion;

wherein:
openings are defined spaced part in different portions of the ring-shaped portion of the light cover;
portions of the optical members are respectively disposed in the openings such that the optical members are respectively disposed forward of the plurality of light-emitting devices;
the optical members and the light cover are integrated by insert molding such that the optical members are indirectly connected to each other via the second material; and
the anvil has a maximum tightening torque of 1,000 N·m or more and 2,500 N·m or less.