Electric generator device, timepiece movement, and timepiece

Patent metadata

Field	Value
Publication number	US-2016170377-A1
Application number	US-201615049430-A
Country	US
Kind code	A1
Filing date	Feb 22, 2016
Priority date	Aug 27, 2013
Publication date	Jun 16, 2016
Grant date	—

Abstract

To provide an electric generator device excellent in power generation efficiency, and a timepiece movement and timepiece provided with the electric generator device. The electric generator device 5 comprises a swinging part 61 A which swings in position due to external swing, a storage part 20 A to store swing power of the swinging part 61 A, a vibration energy generating part 40 A to generate, by the power stored at the storage part 20 A, vibration energy with its amplitude and frequency adjusted, and an electric generator part 70 to convert the vibration energy generated at the vibration energy generating part 40 A to electric power. The electric generator device 5 is provided on a timepiece; the swinging part 61 A is a rotary weight 61; the storage part 20 A is a barrel wheel 20; and the vibration energy generating part 40 A is an escapement governor 40. The electric generator part 70 is provided with a first electrode 71, a second electrode and an electret film.

First claim

What is claimed is:

1 . An electric generator device comprising
a swinging part which swings in position due to external swing, a storage part to store the swing power of the swinging part, a vibration energy generating part to generate, by the power stored at the storage part, vibration energy having its amplitude and frequency adjusted, and an electric generator part to convert the vibration energy generated at the vibration energy generating part to electric power.

2 . The electric generator device according to claim 1 , wherein the vibration energy generating part has a pendulum to be in contact with a rotary part which is rotated by the power stored at the storage part, thereby to adjust the rotational speed of the rotary part.

3 . The electric generator device according to claim 1 , wherein the swinging part is swingably secured to a housing, and the vibration energy generating part is supported by the housing.

4 . The electric generator device according to claim 1 , wherein the electric generator part comprises
a first electrode, a second electrode disposed to face the first electrode, and a charge holding part which is provided on at least one of the first electrode and the second electrode.

5 . The electric generator device according to claim 4 , wherein the charge holding part is one having an electric charge injected to a resin film made of a fluorinated polymer.

6 . The electric generator device according to claim 5 , wherein the fluorinated polymer has a relative dielectric constant of from 1.8 to 8, a volume resistivity of from 10 10 Ωcm to 10 20 Ωcm and a dielectric breakdown strength of from 10 to 25 kV/mm.

7 . The electric generator device according to claim 5 , wherein the fluorinated polymer is one obtained by using a fluorinated polymer (a) having an aliphatic ring in the main chain or a derivative (a′) of the fluorinated polymer (a).

8 . The electric generator device according to claim 7 , wherein the fluorinated polymer (a) is a polymer (I) having repeating units based on a cyclic fluorinated monomer, or a polymer (II) having repeating units formed by cyclopolymerization of a diene-type fluorinated monomer.

9 . The electric generator device according to claim 7 , wherein the derivative (a′) of the fluorinated polymer (a) is a mixture of the fluorinated polymer (a) and the following another component other than the fluorinated polymer (a), or a reaction product of the fluorinated polymer (a) and said another component other than the fluorinated polymer (a):
another component: a silane coupling agent or a polyvalent polar compound having a molecular weight of from 50 to 2,000 and having at least two polar functional groups.

10 . A timepiece movement provided with the electric generator device as defined in claim 1 .

11 . A timepiece provided with the timepiece movement as defined in claim 10 .

Assignees

• Asahi Glass Co Ltd

Inventors

• Hamatani Yoshiki
• Nakajima Masahiro
• Niwa Takashi
• Konishi Miei
• Ozaki Toru

Classifications

• F03G1/10

  for producing output movement other than rotary, e.g. vibratory · CPC title

• F03G1/08

  for winding · CPC title

• G04C3/102

  of the mechanical oscillator or of the coil · CPC title

• G04C10/00 Primary

  Arrangements of electric power supplies in time-pieces {(Mounting, assembling of components G04C3/008)} · CPC title

• H02K7/1892

  Generators with parts oscillating or vibrating about an axis · CPC title