Quick release device for cover of nailers

A quick release device for nailers, comprising:

• a barrel having an axial nail path defined in a top thereof and a feeding path defined through the barrel and being perpendicular to the axial nail path, two slots defined through the barrel and the axial nail path located between the two slots, two through holes defined through two sides of the barrel and communicating with the two slots;
• a cover pivotably mounted to a top of the barrel and having two extensions extending from an underside thereof, the two extensions extending through the two slots and each having a hook and an opening which defines the hook corresponding thereto, and
• a quick release unit having two walls on two sides of a first end thereof and two apertures defined through the two walls, two contact surfaces defined in two respective undersides of the two walls and two inclined surfaces defined in two respective tops of the two walls, a lever extending from a second end of the quick release unit, a pin extending a spring, the two through holes of the barrel and the two apertures of the quick release unit, two legs of the spring contacting one of the contact surfaces and a side of the barrel, the lever projecting beyond the barrel, the two hooks contacting the two inclined surfaces, the inclined surface and the aperture located on the same side relative to the hook corresponding thereto, a top end of each inclined surface located corresponding to the opening of the hook corresponding thereto.