US 11,752,609 B2
Driving tool
Norikazu Baba, Anjo (JP)
Assigned to MAKITA CORPORATION, Anjo (JP)
Filed by MAKITA CORPORATION, Anjo (JP)
Filed on Dec. 22, 2021, as Appl. No. 17/559,717.
Claims priority of application No. 2021-015600 (JP), filed on Feb. 3, 2021.
Prior Publication US 2022/0241948 A1, Aug. 4, 2022
Int. Cl. B25C 1/04 (2006.01); B25C 1/06 (2006.01); B23Q 11/10 (2006.01)
CPC B25C 1/047 (2013.01) [B25C 1/06 (2013.01); B23Q 11/1092 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A driving tool, comprising:
a driver that is movable in an up-down direction and configured to drive a driving member by moving downward;
an elastic material that biases the driver in a downward direction;
an electric motor; and
a lifter that is configured to (i) be rotated by the electric motor and (ii) move the driver to a top dead center against a biasing force of the elastic material; wherein:
the driver includes a plurality of engaging teeth that are linearly arranged; and
the lifter comprises:
a wheel including a plurality of pin supporting holes spaced in a peripheral direction of the wheel;
a plurality of engaging pins spaced in the peripheral direction so as to be engageable with the plurality of engaging teeth, an end of each of the plurality of engaging pins being received in a separate one of the plurality of pin receiving holes, the each of the plurality of engaging pins has a longitudinal axis that is parallel to longitudinal axes of all other of the plurality of engaging pins;
a grease reservoir; and
a grease groove in the wheel (i) defined by an interior surface of one of the plurality of pin supporting holes, (ii) extending, in a direction parallel to the longitudinal axis of the each of the plurality of engaging pins, an entire length of the interior surface in the direction parallel to the longitudinal axis and (iii) configured to receive grease from the grease reservoir.