The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2021
Filed:
Dec. 05, 2018
Tri-force Management Corporation, Saitama, JP;
TRI-FORCE MANAGEMENT CORPORATION, Saitama, JP;
Abstract
The power generation efficiency is to be enhanced by converting vibration energy including various direction components into electric energy without waste. A cantilever structure is adopted, in which a first plate-like bridge portion () and a second plate-like bridge portion () extend in a shape of a letter U from a fixing-portion () fixed to the device housing () and a weight body () is connected to the end. On the upper surface of the cantilever structure, a common lower layer electrode (E), a layered piezoelectric element () and discrete upper layer electrodes (Exto Ez) are formed. The upper layer electrodes (Ezto Ez) disposed on a center line (Lx, Ly) of each plate-like bridge portion take out charge generated in the piezoelectric element () due to deflection caused by the Z-axis direction vibration of the weight body (). The upper layer electrodes (Exto Ex, Eyto Ey) disposed on both sides of the center line (Lx, Ly) of the plate-like bridge portion take out charge generated in the piezoelectric element () due to deflection caused by the X-axis or Y-axis direction vibration of the weight body ().