Patent ID: 11858101
Assignee: KOKI HOLDINGS CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 9:
10. A driver comprising:
a striking mechanism operable to move in a first direction and a second direction opposite to the first direction;
a first moving mechanism configured to move the striking mechanism in the first direction to strike a fastener;
a motor; and
a second moving mechanism configured to move the striking mechanism in the second direction against a force of the first moving mechanism,
wherein the striking mechanism includes:
a main body portion extending in the first direction; and
first engaging portions disposed on the main body portion, and spaced apart from each other in the first direction,

wherein the second moving mechanism includes:
a rotational element rotated by the motor; and
second engaging portions spaced apart from each other in a rotation direction of the rotational element, the second engaging portions being engaged with and released from the first engaging portions, respectively, and

wherein the first engaging portions protruding from the main body portion in a direction intersecting with the first and second directions, and
wherein the first direction is a direction in which the striking mechanism moves from a first position to a second position, the second direction is a direction in which the striking mechanism moves from the second position to the first position,
wherein the driver further comprises a controller configured to, after striking the fastener, control the motor to drive the rotational element to engage the second engaging portions with the first engaging portions to move the striking mechanism in the second direction, and stop the striking mechanism at a standby position between the first position and the second position,
wherein the first engaging portions include a first-first engaging portion having a first protrusion amount from a center line of the main body portion and a second-first engaging portion having a second protruding amount from the center line of the main body portion, the second protruding amount being greater than the first protrusion amount, the center line of the main body portion being parallel with the first direction, and
wherein the first-first engaging portion and the second-first engaging portion are arranged in that order in the first direction.