Patent ID: 8328066

Claim:
A bonding tool, comprising: a component mounting unit including a horn that has a heater insertion hole, in which a heater is inserted with a predetermined clearance from a wall of the heater insertion hole, so that the heater is not in contact with the horn and transmits ultrasonic vibration, an ultrasonic transducer that is fixed on the horn and produces the ultrasonic vibration, and an electronic component holder that is fixed on the horn, holds an electronic component and is heated by the heater; a leg that supports the horn on both sides of the horn at nodal points of the ultrasonic vibration on the horn; a supporter that holds the leg; and a heater holder that holds the heater on both sides of the horn, wherein the leg and the heater holder are formed integrally with each other, the leg is provided on both sides of the horn, and each part of the leg on each side is separated into two parts spaced apart by a predetermined distance along a direction in which the ultrasonic vibration is transmitted, so that the leg supports the horn at four locations, and the heater holder is provided on both sides of the horn, being separated into two parts arranged along a direction orthogonal to the direction in which the ultrasonic vibration is transmitted, and each part of the heater holder on each side is disposed in the in-between space between the two parts of each part of the leg.