Title:
【発明の名称】圧電駆動装置
Document Type and Number:
Japanese Patent JP2500684
Kind Code:
B2
Abstract:
PURPOSE:To ensure the accurate movement of a moving member by simple structure, to improve injection characteristics by using a piezoelectric drive for a fuel injection valve and to enhance the output, fuel cost, etc. of an internal combustion engine by correcting the error of the quantity of expansion and contraction of one part of a piezoelectric element by the piezoelectric element. CONSTITUTION:First and second piezoelectric elements 4, 5 are each installed inside to a piezoelectric actuator 1 for a piezoelectric drive through insulating plates 3. Voltage is generated in electrodes, 6, 8 when the element 4 is distorted from outside, the element 4 is distorted and elongated in the axial direction whch positive voltage is applied to the electrodes 6, 8 inversely, and the element 4 is shrunk when negative voltage is applied. The elements 5 are connected to the elements 4 through insulating plates 14, and an actuator 2 is penetrated to electrodes 18, 20 from the elements 5 through each hermetic seal 22, 24. A piston 28 is arranged to the element 5 through an insulating plate 26, and a cylinder body 30 is supported slidably to the piston 28. The error of one part of the piezoelectric elements is corrected by the piezoelectric element, thus simplifying the constitution of the device.
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Inventors:
ITATSU TOSHIRO
Application Number:
JP18733686A
Publication Date:
May 29, 1996
Filing Date:
August 08, 1986
Export Citation:
Assignee:
TOYOTA MOTOR CO LTD
International Classes:
H02N2/00; F02D41/00; F02D41/20; F02M51/00; F02M51/06; H01L41/04; H01L41/083; H01L41/09; (IPC1-7): H01L41/083; B23Q5/28; F02D41/20; F02M51/00; F02M51/06; H02N2/00
Domestic Patent References:
| JP60259347A | ||||
| JP60104762A |
Attorney, Agent or Firm:
Adachi Tsutomu