HAND PIECE

摘要

PROBLEM TO BE SOLVED: To evade the excessive loads of a tool or an object to be treated and to facilitate the handling of a hand piece. SOLUTION: In this hand piece provided with a tool holder 5 arranged in the front end part area of the hand piece 3, a holding coupling 16 for detachably fixing the tool 6 inside the tool holder 5 and a drive connection 8 stretched in a longitudinal direction through the inside of the hand piece 3 and used for the rotation and/ or reciprocating motion of the tool holder 5, an excessive load coupling 14 for limiting transmitted torque to a prescribed maximum torque value is arranged inside the drive connection 8.