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US 9,543,499 B2Granted
Power generation device
AssigneeFujitsu Limited
InventorsTakeaki Shimanouchi, Osamu Toyoda
Life of this patent
Estimating the term…
Abstract
A power generation device includes: first and second beams which are arranged to face each other and are bent by vibration; and a coil wound around the first and second beams. Each of the first and second beams includes: a beam body; and a stress relaxation layer made of a material different from a material of the beam body and partially covering the surface of the beam body.
Claims16
A power generation device, comprising:
- first and second beams which are arranged to face each other and are bent by vibration;
- a first joint yoke joining one end of the first beam to one end of the second beam;
- a second joint yoke joining another end of the first beam to another end of the second beam;
- and
- a coil wound around the first and second beams, wherein
- each of the first and second beams includes:
- a beam body formed into a plate;
- and a stress relaxation layer made of a material different from a material of the beam body and partially covering the surface of the beam body, and
- one end of the beam body is joined to the first joint yoke, another end of the beam body is joined to the second joint yoke, and a whole of the beam body is made of a single material.
6 more elements
A power generation device, comprising:
- first and second beams which are disposed to face each other and are bent by vibration;
- a first joint yoke joining one end of the first beam to one end of the second beam;
- a second joint yoke joining another end of the first beam to another end of the second beam;
- and
- a coil wound around the first and second beams, wherein
- at least one of the first and second beams has a structure in which layers made of a magnetostrictive material and layers made of an insulating material are alternately stacked on each other,
- one end of the layer made of the magnetostrictive material is joined to the first joint yoke, and another end of the layer made of the magnetostrictive material is joined to the second joint yoke, and
- one end of the layer made of the insulating material is joined to the first joint yoke, and another end of the layer made of the insulating material is joined to the second joint yoke.
5 more elements
Dependencies are inferred from the claim text.