| 摘要 |
<p>The present invention relates to a device for producing ultrasonic longitudinal acoustic vibrations in a user element, comprising at least one electro-acoustic transducer (20), the piezoelectric ceramics (21) of which vibrate in a radial mode, and an intermediate element (30), which is placed between the transducer and the user element, and is firmly attached on one side to the distal face of the transducer in a contact area (26b) localized around a vibration amplitude anti-node of the distal face and on the other side, to the user element through a planar end surface, any point of the end surface, being driven by a homogenous vibration orthogonal to said surface.</p> |
