MÉCANISME DE CONNEXION D'UNITÉ DE GÉNÉRATION/TRANSMISSION DE VIBRATIONS ULTRASONORES, ET PROCÉDÉ DE FABRICATION D'UNITÉ DE GÉNÉRATION/TRANSMISSION DE VIBRATIONS ULTRASONORES
A connection mechanism (300) for an ultrasonic-vibration generating/transmitting unit (200) is provided in each of parts constituting the ultrasonic-vibration generating/transmitting unit (200) which generates and transmits ultrasonic vibration, the connection mechanism connecting the parts to each other to form the ultrasonic-vibration generating/transmitting unit (200). When an one end portion (41a) is inserted into a cylinder member (301) from a cylinder-side one end portion (341a) and when the other end portion (51a) is inserted into the cylinder member (301) from a cylinder-side other end portion (351a) so that the other connection portion (51g) is connected to a cylinder-side connection portion (351g), a held portion (41c) is held by an end face (511a) of the other end portion (51a) and a cylinder-side protrusion portion (341c) in the axial direction of the cylinder member (301), whereby the one end portion (41a) and the other end portion (51a) are connected to each other.