Patent ID: 8844787
Filing Date: 2014-09-30
Classification: B25C

Abstract:
1. A fastener driving tool comprising: a motor having two end faces and a rotation output shaft extending through the end faces; a magazine that supplies fasteners; a plunger, provided to move up and down between an upper dead point and a lower dead point, and having a blade for driving the fasteners; a spring that urges the plunger downwards, and that is capable of being compressed upwards; a spring compression mechanism unit having a rotating body that moves the plunger in a direction of compressing the spring based on rotation of the rotation output shaft of the motor in one direction; a reduction mechanism unit provided between the rotation output shaft of the motor and the rotating body, having a first rotating input shaft that is driven by the motor and a rotation output shaft connected to the rotating body to transmit a reduced rotational speed of the first rotating input shaft to the rotating body; and a one-way clutch provided between the rotation output shaft of the motor and the first rotating input shaft of the reduction mechanism unit, that permits rotation of the motor in the one direction that compresses the spring, and prohibits the rotation of the motor in an opposite direction, wherein the one-way clutch is connected to one end of the rotation output shaft located at one end face of the motor, and the first rotating input shaft of the reduction mechanism unit is connected to another end of the rotation output shaft located at the other end face of the motor.