An ultrasonic transmitting unit includes a first vibrating section and second vibrating section vibrating at the same predetermined frequency with respect to each other. The ultrasonic transmitting unit includes a relay portion transmitting the ultrasonic vibration toward a first transmitting direction from the first vibrating section to the second vibrating section and positioned at a position corresponding to one of an antinode position of the vibration in the first vibrating section and different from an antinode position and a node position of the vibration in the second vibrating section, and a non-contact vibrating portion extending in a second vibrating section from the relay portion toward a second transmitting direction without contact with the first vibrating section.
