Patent ID: 11913545
Assignee: BLACK & DECKER, INC.
Field: Mechanical elements (Mechanical engineering)
Classification: CPC B  F | IPC B  F

Claim 6:
7. A compliant shifting mechanism for a power tool, comprising:
a selector rotatable about a first axis, wherein the selector is configured to be rotated by a user;
a first shift plate rotatable about the first axis in response to rotation of the selector;
a first torsion spring coupled to the selector and to the first shift plate to bias at least one of the selector or the first shift plate in a first rotational direction,
a second shift plate rotatable about the first axis in response to rotation of the first shift plate;
a second torsion spring coupled to the first shift plate and to the second shift plate to bias at least one of the first shift plate or the second shift plate in a second rotational direction opposite the first rotational direction; and
a shift member moveable in response to rotation of the second shift plate about the first axis to cause a transmission of the power tool to shift between at least a first mode of operation and a second mode of operation;
wherein, in response to rotation of the selector in the first rotational direction to shift to the first mode of operation, the first torsion spring provides shifting compliance in the first rotational direction and, in response to rotation of the selector in the second rotational direction to shift to the second mode of operation, the second torsion spring provides shifting compliance in the second rotational direction;
further comprising a first eccentric pin with a first end fixedly coupled to one of the selector or the first shift plate and a second end movably received in an arcuate slot defined in the other of the selector or the first shift plate; and
further comprising a second eccentric pin with a first end fixedly coupled to one the first shift plate or the second shift plate and a second end movably received in an arcuate slot defined in the other of the first shift plate or the second shift plate.