Seiko Instruments Inc

Asahi Glass Company, Limited

Miei Konishi

Takashi Niwa

Masahiro Nakajima

Matsuo Kishi

Toru Ozaki

Yoshiki Hamatani

An electric generator device includes a swinging part, a storage part, a vibration energy generating part, and an electric generator part. The swinging part swings in position due to external swing. The storage part stores a swing power of the swinging part. The vibration energy generating part generates, by the power stored at the storage part, vibration energy having its amplitude and frequency adjusted. The electric generator part converts the vibration energy generated at the vibration energy generating part to electric power. The vibration energy generating part comprises 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.

Electric generator device, timepiece movement, and timepiece

A metal structure includes, by mass %, Fe: 10% to 30%; S: 0.005% to 0.2%; and the balance consisting of Ni and unavoidable impurities, in which a maximum grain size of the metal structure is 500 nm or less. The metal structure preferably has one or more of a stress relaxation rate of 10% or less, a lattice constant of 3.535 &#x212b; to 3.56 &#x212b;, a yield stress of 1500 MPa or more, a Young's modulus of 150 GPa or more and a Vickers hardness of Hv 580 or more.

Metal structure, method of manufacturing metal structure, spring component, chronograph coupling lever for timepiece, and timepiece

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Chiba, Japan

Miei Konishi