| 摘要 |
<p>The piezoelectric element is pressed against its tilting bearing by two relatively moving rolls which are arranged inside the aperture in a step-like offset manner. The rolls abut the frame and have an operating lever for pressure application. The piezoelectric element may be prestressed into its rest position by a resetting spring resting against the frame. Both rolls may be mounted in a smaller extension of the aperture which contains a step. The operating lever may be in the form of a U, having retaining openings for the rolls ends in the U ends. The piezoelectric element contains two spark generators within an insulator, separated by a terminal plate.</p> |
