US 11,958,170 B2
Impact tool
Tokuo Hirabayashi, Anjo (JP); Haruki Tejima, Anjo (JP); Kazuma Aoki, Anjo (JP); and Kazunori Kinoshita, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Nov. 30, 2022, as Appl. No. 18/060,094.
Claims priority of application No. 2021-201914 (JP), filed on Dec. 13, 2021; and application No. 2021-201915 (JP), filed on Dec. 13, 2021.
Prior Publication US 2023/0182269 A1, Jun. 15, 2023
Int. Cl. B25F 5/00 (2006.01); B25B 21/02 (2006.01); B25B 23/18 (2006.01); B25F 5/02 (2006.01)
CPC B25B 21/02 (2013.01) [B25B 23/18 (2013.01); B25F 5/02 (2013.01)] 24 Claims
OG exemplary drawing
 
1. 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;
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; and
a light unit, which is held on the hammer case and comprises:
a plurality of surface-mounted light-emitting devices,
a plurality of optical members composed of a first material, the optical members respectively facing the light-emitting devices and being configured to transmit illumination light emitted from the light-emitting devices, and
a light cover, which is disposed forward of the light-emitting devices and has a plurality of openings that are spaced apart in different portions of the light cover;
wherein:
the anvil has a maximum tightening torque of 1,000 N·m or more and 2,500 N·m or less portions of the optical members are respectively disposed in the openings;
the light cover is composed of a second material that differs from the first material;
the optical members do not directly contact each other; and
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.