| 摘要 |
PURPOSE:To prevent a percussion mechanism from being entered by dusts by a constitution wherein the percussion mechanism part consisting of an inner case and an outer case is covered by a sealed case. CONSTITUTION:A percussion mechanism consists in housing an outer case, in which a piezoelectric element 3, a bearer 4, a percussion pad 2 are housed, a hammer 8 to percuss the piezoelectric element 3, a hammer spring 7 to store impulsive force and a hammer pin 9. In addition, an inner case 6 slidably assembled in the outer case 1 and a return spring 10 to return the inner case to its original position after percussion are provided. Further, a sealed case, which covers a percussion mechanism part consisting of the outer case 1 and the inner case 6, is mounted on the inner case 6. Thus, a high tension generating device with excellent dust proof property can be obtained. |
