Patent ID: 6851595

Claim:
A nail beating depth adjuster of a nail driver comprising a guide tube; a retaining seat extending from a lateral side of the guide tube; the retaining seat having a central seat hole for movably installing a linkage; an outer wall of the guide tube near a nail outlet being installed with a limiting cover; a driven rod being installed with the linkage; one end of the driven rod being embedded to a position near a trigger of the nail driver for triggering an operation to beating a nail; a rod body of the linkage being installed with a second spring which resists against a bottom of the nail driver head; and an outer thread being formed on the rod body of the linkage; wherein one side of the limiting cover is extended with a first seat and a second seat; a first hole is formed in the first seat and a second hole is formed in the second seat; the first hole and second hole are coaxial and the linkage passes through the first hole and second hole; a first spring encloses the linkage between the first seat and second seat; a nut encloses an outer thread of the linkage between the first seat and second seat; the first spring resisting against the nut; and an annular end surface of the nut is formed with a plurality of buckling recesses which are spaced with an equal space; one of the end surfaces of first seat and second seat is formed with at least one tooth at a position corresponding to one of the buckling recesses; thereby, by the first spring pressing against the nut, the buckling recesses on the nut expands elastically upon or engages with the tooth for adjusting and positioning.