Title:
【発明の名称】たて・ねじれ結合型ボルト締め振動子
Document Type and Number:
Japanese Patent JP2572988
Kind Code:
B2
Abstract:
PURPOSE:To enable an element generating vertical oscillation and torsional oscillation and to be easily manufactured, by forming a ring-formed piezoelectric element with the piezoelectric element split pieces of a thickness mode and the piezoelectric element split pieces of a shear mode, and by placing the piezoe lectric element between metallic blocks. CONSTITUTION:The piezoelectric element split pieces 2 of a thickness mode and the piezoelectric element split pieces 3 of a shear mode are mixed with each other within the same plane and are aligned to form a ring-formed piezoe lectric element 1. The polarization directions of the piezoelectric element split pieces 2, 3 are respectively counter-arranged so that two pieces of the piezoelec tric element 1 may be electrically arranged in parallel with each other, and lead terminals 11a, 11b, 12a, 12b are applied on the respective surfaces and are placed between a first and a second metallic blocks 16, 17, and are fastened with a bolt 18 and a nut 19 formed integrally with the first metallic block 16, to form a bolt-fastened oscillator.
Inventors:
MASUDA MICHUKI
YAMAMORI HARUO
YAMAMORI HARUO
Application Number:
JP17196487A
Publication Date:
January 16, 1997
Filing Date:
July 09, 1987
Export Citation:
Assignee:
NGK SPARK PLUG CO
International Classes:
H01L41/09; H02N2/00; (IPC1-7): H02N2/00
Domestic Patent References:
| JP61121777A |
Attorney, Agent or Firm:
Yuko Sonobe