Patent ID: 7156281

Claim:
A bonding device for bonding an object to be bonded under pressure to a surface to be bonded by allowing a load and vibration to act on the object to be bonded, the bonding device comprising: a bonding tool, abutting on the object to be bonded; and a pressing unit, pressing the bonding tool to the object to be bonded; wherein the bonding tool includes: a transversely elongated horn; a vibrator, applying a longitudinal vibration to the horn in a first longitudinal direction along the longitudinal direction of the horn; a protruding part, protruding from the horn in a second direction substantially perpendicular to the first direction; a bonding operation part, provided in the end part of the protruding part to abut on the object to be bonded; and a heating unit, inserted into a mounting hole provided in the horn; and wherein the heating unit is mounted into the mounting hole in a loose state with a substantial space enough to prevent a contact pressure of the heating unit against the inner surface of the mounting hole, whereby an ultrasonic vibration is not directly transmitted to the heating unit.