Patent ID: 7017790

Claim:
A positioning device of a nail driver comprising: a tool body; a positioning unit in a front end of the tool body; the positioning unit having a nail output frame and a guide block formed by two sliding blocks; a nail output opening at a front end of the nail output frame; the nail output opening being between two sliding recesses; two sliding blocks being movable installed into the sliding recesses; a guide opening formed between the two sliding blocks; when the two sliding blocks are separated, the guide opening expands; two positioning plates; each of two sides of the nail output frame having a respective one of the two positioning plates; two spring elements, each spring element being confined by a respective one of the two positioning plates and a respective one of the two sliding blocks so that when no external force applies to the sliding blocks; the two sliding blocks move closer to one another by elastic forces of the spring elements; wherein a front end of the nail output frame is the nail output opening; each of an upper side and lower side of an interior of the nail output opening has a respective sliding recess; the sliding recesses serve for positioning the guide block.