Electric power tool with vibration mechanism

摘要

An impact driver with a vibration mechanism includes a vibration switching ring externally fitted to a second cam in the forward position in such a manner that an inner protrusion on the inner circumference is latched a protrusion on the outer circumference of the second cam so that the rotation of the second cam is restricted. Further, a coil spring is provided for biasing the vibration switching ring to the forward position. A link plate provided between the mode switching ring and the vibration switching ring latches onto the front surface of the vibration switching ring and engages an engaging protrusion at the rear end with a mode switching ring. The link plate moves forward or backward to a first position where the vibration switching ring moves to the forward position or a second position where the vibration switching ring moves to the backward position.

主权项

1. An electric power tool with a vibration mechanism, comprising:
a motor; a final output shaft configured to rotate about a longitudinal axis and to which rotation is transmitted from the motor; a vibration mechanism including a first cam secured integrally to the final output shaft such that the first cam and final output shaft move together, a second cam that interlocks with a rear of the first cam and is provided to an exterior of the final output shaft so as to be rotatable relative to the final output shaft, and a vibration switching member configured to move between a first position in which the vibration switching member is latched to the second cam so as to restrict relative rotation between the second cam and the final output shaft and a second position in which the vibration switching member is positioned apart from the second cam, such that the second cam rotates relative to the final output shaft, thus causing vibration in an axial direction provided to the final output shaft; and a switching operation member that is provided to the housing and causes the vibration switching member to move between the first position and the second position; wherein the vibration switching member is a ring body and a first protrusion provided on an outer circumference of the second cam is configured to latch a second protrusion provided on an inner circumference of the vibration switching member, the first protrusion protruding radially outwardly and the second protrusion protruding radially inwardly.