Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
Operation device
Document Type and Number:
Japanese Patent JP6191717
Kind Code:
B2
Abstract:
A displacement sensor (10) has a long elastic member (20) having a rectangular shape. A piezoelectric element (30) is attached to a first main face of the elastic member (20). The piezoelectric element (30) has a long rectangular-shaped piezoelectric sheet (300) and electrodes (301 and 302) formed on both main faces of the piezoelectric sheet (300). The piezoelectric sheet (300) is made of poly-L-lactic acid and is at least uniaxially-stretched. The piezoelectric element (30) is attached so that the uniaxial-stretching direction of the piezoelectric sheet (30) forms 45° from a long-side direction of the elastic member (20). When the elastic member (20) is bent along the long-side direction, the piezoelectric sheet (300) is stretched along the long-side direction, and the piezoelectric element (30) generates voltage of predetermined level.

Inventors:
Masamichi Ando
Hideki Kawamura
Application Number:
JP2016054693A
Publication Date:
September 06, 2017
Filing Date:
March 18, 2016
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
MURATA MANUFACTURING CO.,LTD.
International Classes:
G06F3/01; H01L41/113; H01L41/193; H03K17/96; H03K17/965
Domestic Patent References:
JP2004046792A
JP4166702A
JP5152638A
JP2004192241A
JP2009086403A
JP2004021528A
JP2005213376A
JP2006230876A
JP2006340944A
JP2006038710A
JP2008203911A
JP2009223875A
JP2010224480A
JP2011044128A
JP2004518188A
Foreign References:
WO2009139237A1
WO2009144964A1
WO2010070550A1
WO2010143528A1
US6447887
Attorney, Agent or Firm:
Kaede International Patent Office