US 2015/0145375 A1Published application

Piezoelectric power generation apparatus

AssigneeMurata Manufacturing Co., Ltd.

InventorsHitoshi Sakaguchi, Chikahiro Horiguchi

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Abstract

A piezoelectric power generation apparatus that includes a first vibrating portion having a fixed end and a free end, a first weight portion bonded to the free end of the first vibrating portion, a second vibrating portion having a fixed end bonded to the first weight portion and a free end, and including a vibrating plate and a piezoelectric element provided on the vibrating plate. A second weight portion is bonded to the free end of the second weight portion. In a state where the piezoelectric power generation apparatus is arranged on a vibration surface and is still, a position of the free end of the first vibrating portion and a position of the fixed end of the second vibrating portion in an axial direction perpendicular to the vibration surface are different from each other.

Claims6

Dependent claims

A piezoelectric power generation apparatus comprising:

a first vibrating portion having a first fixed end and a first free end;
a first weight portion joined to the first free end of the first vibrating portion;
a second vibrating portion having a second fixed end joined to the first weight portion and a second free end, and including a vibrating plate and a piezoelectric element provided on the vibrating plate;
and
a second weight portion joined to the second free end of the second vibrating portion,
wherein in a state where the piezoelectric power generation apparatus is arranged on a vibration surface and is still, a first position of the first free end of the first vibrating portion in an axial direction perpendicular to the vibration surface and a second position of the second fixed end of the second vibrating portion in the axial direction perpendicular to the vibration surface are different.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/611,528Filed 2 Feb 2015
Priority: JP 2012-1746127 Aug 2012
Published: 28 May 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H02N 2/188
Vibration harvesters: adapted for resonant operation
H02N 2/186
Producing electrical output from mechanical input, e.g. generators: vibration harvesters
H10N 30/306
Beam type: cantilevers
H02N
Electric machines not otherwise provided for

Family

Application14/611,528Continuation
US 9,893,655 B2Related patent
US 2015/0145375 A1This patent

From the US filing history. Foreign family members aren’t listed.

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