Power generation device

Patent metadata

Field	Value
Publication number	US-10170969-B2
Application number	US-201414911258-A
Country	US
Kind code	B2
Filing date	Nov 4, 2014
Priority date	Nov 7, 2013
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

A power generation device of the present invention includes: a first magnet member; a second magnet member having its N-pole reversely disposed to an N-pole of the first magnet member; a center yoke capable of horizontally shifting and disposed between the first magnet member and the second magnet member; a coil disposed at the outer circumference of the center yoke; and a drive member horizontally shifting while holding the first magnet member and the second magnet member. The drive member and the center yoke horizontally shift in a first direction. After the horizontal shift of the center yoke in the first direction stops, the drive member further horizontally shifts in the first direction, and the center yoke horizontally shifts in a second direction opposite to the first direction.

First claim

The invention claimed is:

1. A power generation device comprising:
a first magnet member;
a second magnet member having its N-pole reversely disposed to an N-pole of the first magnet member;
a center yoke capable of horizontally shifting and disposed between the first magnet member and the second magnet member;
a coil disposed at an outer circumference of the center yoke;
a drive member horizontally shifting while holding the first magnet member and the second magnet member; and
a fixing part, wherein
the drive member and the center yoke horizontally shift in a first direction,
after the horizontal shift of the center yoke in the first direction stops, the drive member further horizontally shifts in the first direction, and the center yoke horizontally shifts in a second direction opposite to the first direction,
the center yoke has a restriction-target part,
the fixing part is disposed in the restriction-target part,
a clearance exists between the restriction-target part and the fixing part, and
when the fixing part and the restriction-target part are brought into contact with each other, the horizontal shifting of the center yoke in the first direction stops.

2. The power generation device according to claim 1 , further comprising a case, wherein
the case has an outer wall, and
when the drive member and the outer wall are brought into contact with each other, the horizontal shifting of the drive member in the first direction stops.

3. The power generation device according to claim 1 , further comprising a spring and a drive body which is rotatable, wherein
the drive body is connected to the drive member via the spring,
a spring force is accumulated on the spring in accordance with rotation of the drive body, and
the spring force causes the drive member to horizontally shift.

4. A power generation device comprising:
a first magnet member;
a second magnet member having its N-pole reversely disposed to an N-pole of the first magnet member;
a center yoke capable of horizontally shifting and disposed between the first magnet member and the second magnet member;
a coil disposed at an outer circumference of the center yoke;
a drive member horizontally shifting while holding the first magnet member and the second magnet member; and
a case, wherein
the drive member and the center yoke horizontally shift in a first direction,
after the horizontal shift of the center yoke in the first direction stops, the drive member further horizontally shifts in the first direction, and the center yoke horizontally shifts in a second direction opposite to the first direction,
the case has an outer wall, and
when the drive member and the outer wall are brought into contact with each other, the horizontal shifting of the drive member in the first direction stops.

5. The power generation device according to claim 4 , further comprising a spring and a drive body which is rotatable, wherein
the drive body is connected to the drive member via the spring,
a spring force is accumulated on the spring in accordance with rotation of the drive body, and
the spring force causes the drive member to horizontally shift.

Assignees

• Panasonic Ip Man Co Ltd

Inventors

• Ohishi Suguru
• Toda Kensuke

Classifications

• H02K35/06 Primary

  with moving flux distributors, and both coil systems and magnets stationary · CPC title

• H02K7/1876

  with reciprocating, linearly oscillating or vibrating parts · CPC title

• H02K35/04 Primary

  with moving coil systems and stationary magnets · CPC title