Title:
LAMINATED PIEZOELECTRIC ELEMENT, INJECTION DEVICE PROVIDED WITH SAME, AND FUEL INJECTION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2013/114768
Kind Code:
A1
Abstract:
[Problem] To provide a laminated piezoelectric element which is suppressed in the occurrence of cracks in a laminate, an injection device which is provided with the laminated piezoelectric element, and a fuel injection system.
[Solution] The present invention is characterized by comprising: a laminate (4) wherein a piezoelectric layer (2) and an internal electrode layer (3) are laminated; an external electrode (6) which is electrically connected to the internal electrode layer (3) and fixed to a lateral surface of the laminate (4), with a bonding material (5) being interposed therebetween, such that a part of the external electrode (6) extends beyond one end face of the laminate (4) in the lamination direction; and a fixing member (7) which is formed of a metal and is in contact with the one end face of the laminate (4), while being at a distance from the external electrode (6). The present invention is also characterized in that the external electrode (6) has a bent portion (61) that is bent so as not to come into contact with the one end face of the laminate (4).
Inventors:
YAMAMOTO KEN (JP)
Application Number:
PCT/JP2012/083480
Publication Date:
August 08, 2013
Filing Date:
December 25, 2012
Export Citation:
Assignee:
KYOCERA CORP (JP)
International Classes:
H01L41/083; F02M51/06; H01L41/187; H01L41/22
Foreign References:
| JP2006128402A | 2006-05-18 | |||
| JPH09102636A | 1997-04-15 | |||
| JP2003060249A | 2003-02-28 | |||
| JPH034576A | 1991-01-10 |
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