Title:
PIEZOELECTRIC LAMINATE
Document Type and Number:
Japanese Patent JPH04116990
Kind Code:
A
Abstract:
PURPOSE:To prevent discharge caused by a sticking-out or bent electrode plate by locating piezoelectric plates and electrode plates with centering members in their central holes. CONSTITUTION:Piezoelectric plates 1 and electrode plates 2 are piled alternately on a pair of centering members 3 set as distant as the length of the major axes of the elliptic holes of the piezoelectric plates 1 with the protrusions 22 of the electrode plates 2 alternately positioned at both ends of the minor axes of the piezoelectric plates 1. The piezoelectric plates 1 and the electrode plates 2 are located and fastened with the centering members 3. The protrusions 22 of the electrode plates 2 of the same polarity are bent and joined by welding to make fetch electrodes. Thereby the fetch electrodes made of the protrusions 22 of the electrode plates 2 are arranged at the insulation parts of the elliptic holes of the piezoelectric plates 1 and insulation distances from the electrode layers are secured. Therefore, the centers do not slip in assembly and the centering members 3 of the piezoelectric laminate prevent slippage of the piezoelectric plates 1 and the electrode plates 2 in operation.
More Like This:
Inventors:
OZAWA HITOSHI
KOMEICHI SHIGEKI
HAYASAKA TAMIO
KOMEICHI SHIGEKI
HAYASAKA TAMIO
Application Number:
JP23759690A
Publication Date:
April 17, 1992
Filing Date:
September 07, 1990
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
H01L41/09; H01L41/083; (IPC1-7): H01L41/09
Attorney, Agent or Firm:
Hiroshi Okawa