Power generating apparatus

Patent metadata

Field	Value
Publication number	US-10367433-B2
Application number	US-201615131377-A
Country	US
Kind code	B2
Filing date	Apr 18, 2016
Priority date	Nov 12, 2013
Publication date	Jul 30, 2019
Grant date	Jul 30, 2019

Abstract

A power generating apparatus includes a power generating element, a lever mechanism including a force point, a support point, and an action point, a first magnetic body disposed on the lever mechanism, and a second magnetic body having magnetic characteristics of being attracted to the first magnetic body. Upon the lever mechanism being pressed, the action point applies a load to the power generating portion and the first magnetic body approaches the second magnetic body while being attracted to the second magnetic body.

First claim

The invention claimed is:

1. A power generating apparatus comprising:
a power generating element that generates power when a load is applied thereto;
a lever mechanism that includes a support point and a projection that faces the power generating element, wherein the lever mechanism pivots about the support point when the lever mechanism is pressed towards the power generating element;
a first magnetic body disposed on the lever mechanism that pivots integrally with the lever mechanism about the support point; and
a second magnetic body disposed on the power generating apparatus to face the first magnetic body and having magnetic characteristics to attract the first magnetic body,
wherein, when the lever mechanism is pressed towards the power generating element, the projection applies the load to the power generating element such that the power generating element generates the power.

2. The power generating apparatus according to claim 1 , wherein, when the lever mechanism is pressed towards the power generating element, the first magnetic body approaches the second magnetic body while being attracted to the second magnetic body.

3. The power generating apparatus according to claim 2 , wherein the first magnetic body contacts the second magnetic body when the lever mechanism finishes pivoting about the support point.

4. The power generating apparatus according to claim 1 , wherein the power generating element includes a piezoelectric element.

5. The power generating apparatus according to claim 1 , wherein the power generating element includes a magnetostrictor.

6. The power generating apparatus according to claim 5 , wherein the power generating element further includes a coil wound around the magnetostrictor and a portion of the power generating element not wound by the coil faces the projection of the lever mechanism.

7. The power generating apparatus according to claim 1 , wherein a distance between the support point and the first magnetic body is greater than a distance between the support point and the projection.

8. The power generating apparatus according to claim 1 , wherein an opposing force produced by deformation of the power generating element acts on the projection of the lever mechanism when the lever mechanism finishes pivoting about the support point toward the power generating element.

9. The power generating apparatus according to claim 8 , wherein the opposing force is weaker than a magnetic coupling force between the first magnetic body and the second magnetic body.

10. The power generating apparatus according to claim 1 , wherein a pivoting range of the lever mechanism includes a first pivoting range and a second pivoting range located on a side farther than the first pivoting range in the direction that brings the projection toward the power generating element.

11. The power generating apparatus according to claim 10 , wherein a force required to displace the lever mechanism increases in the first pivoting range and decreases in the second pivoting range.

12. The power generating apparatus according to claim 1 , further comprising
a projecting portion disposed between the lever mechanism and the power generating element and including a pressing portion that directly presses the power generating element when the lever mechanism is pressed towards the power generating element.

13. The power generating apparatus according to claim 1 , wherein the lever mechanism includes a magnetic material that forms the first magnetic body.

14. A power generating apparatus comprising:
a power generating element that generates power when a load is applied thereto;
a base with the power generating element attached to the base by at least one anchoring member;
a power generating element that generates power when a load is applied thereto;
a lever mechanism that includes a support point and a projection that faces the power generating element, wherein the lever mechanism pivots about the support point when the lever mechanism is pressed towards the power generating element;
a first magnetic body disposed on the lever mechanism that pivots integrally with the lever mechanism about the support point; and
a second magnetic body disposed on the power generating apparatus to face the first magnetic body and having magnetic characteristics to attract the first magnetic body,
wherein the support point of the lever mechanism is secured to the base by a support member and extends over the power generating element, and
wherein, when the lever mechanism is pressed towards the power generating element, the projection applies the load to the power generating element such that the power generating element generates the power.

15. The power generating apparatus according to claim 14 , wherein the second magnetic body is disposed on the base and faces the first magnetic body.

16. The power generating apparatus according to claim 14 , wherein the second magnetic body is disposed on a column structure extending from a surface of the base and the first magnetic body is disposed on a tip of the lever mechanism to face the second magnetic body.

17. The power generating apparatus according to claim 14 , further comprising:
an additional lever mechanism extending in a direction opposite the lever mechanism to form a see-saw configuration about the support member; and
an additional power generating element disposed on the base facing the additional lever mechanism,
wherein the additional lever mechanism includes an additional projection facing the power generating element, and
wherein, when the additional lever mechanism is pressed towards the additional power generating element, the additional projection applies a load to the additional power generating element.

18. The power generating apparatus according to claim 14 , wherein the lever mechanism further includes an extended portion on a side of the support member opposite the power generating element, such that a pressing force on the extended portion forces the lever mechanism away from the power generating element.

19. The power generating apparatus according to claim 18 , wherein the first magnetic body is disposed on the extended portion of the lever mechanism and the second magnetic body is disposed on column structure extending from the base.

20. A power generating apparatus comprising:
a planar base;
a power generating element attached to the planar base by at least one anchoring member;
a lever mechanism attached to the planar base by a support member, wherein the lever mechanism extends over the power generating element and includes a projection facing the power generating element and the lever mechanism is configured to pivot about a pivot shaft of the support member when the lever mechanism is pressed towards the power generating element;
a first magnetic body disposed on the lever mechanism; and
a second magnetic body disposed on the planar base at a position to face the first magnetic body, wherein the second magnetic body has magnetic characteristics to attract the first magnetic body,
wherein, when the lever mechanism is pressed towards the power generating element, the projection applies a load to the power generating element such that the power generating element generates the power.

Assignees

• Murata Manufacturing Co

Inventors

• Takahashi Kouhei
• Horiguchi Chikahiro

Classifications

• H02N2/18 Primary

  producing electrical output from mechanical input, e.g. generators (for measurement devices G01) · CPC title

• H01L41/113

  Electricity · mapped topic

• H01L41/125

  Electricity · mapped topic

• H01L41/042

  Electricity · mapped topic

• H01L41/1134

  Electricity · mapped topic