Patent attributes
The durability of the driver is further improved. The nail driver for driving a nail into a material to be driven includes: a plunger moved in a first direction parallel to a driving direction of the nail by bias caused by a coil spring and moved in a second direction opposite to the first direction against the bias of the coil spring (25); and a weight moved in the second direction by bias caused by a coil spring and moved in the first direction against the bias of the coil spring. The weight (24) is moved in the second direction when the plunger is moved in the first direction and is moved in the first direction when the plunger is moved in the second direction, and the plunger and the weight are moved in the first direction and the second direction so as to be independent from each other.
