Patent ID: 7506788
Filing Date: 2009-03-24
Classification: B25C

Abstract:
1. A transmission mechanism for an electrical nail gun, comprising: a rotary transmission unit in a housing of the electrical nail gun; and a linear transmission unit in the housing, comprising: a motor driven by electricity; a flywheel driven by the motor, the flywheel pivotally mounted on a stop shaft, a cylinder extended from a side of the flywheel thereon and made of a magnetic material, and the cylinder defining a ring-shaped receiving chamber therein; a solenoid activated by electricity and buried in the receiving chamber, wherein a magnetic conductivity loop is constructed around the solenoid to produce the magnetic field when the solenoid is activated; and a moveable driving wheel rotatably disposed between an engagement position and a disengagement position adjacent to an end side of the cylinder, wherein two opposite slantwise end surfaces are respectively formed on the cylinder and the driving wheel to be used as a clutch; wherein the driving wheel is attracted to move to the engagement position to be driven by the flywheel, thereby driving the linear transmission unit to impact a nail when the solenoid is activated by electricity, and the driving wheel returns to the disengagement position to disengage from the flywheel, thereby stopping driving the linear transmission unit when the solenoid is demagnetized.