| 摘要 |
The invention relates to a spiral spring (2) for mechanical clockworks. The spiral spring (2) has a spiral spring plane (E), which coincides with the oscillation plane of the spiral spring (2), and a spiral spring axis (A), which extends perpendicularly to the spiral spring plane (E) and through the oscillation center of the spiral spring (2). A core (4) of the spiral spring (2) is made of polycrystalline silicon, wherein the core (4) of the spiral spring (2) is constructed of a plurality of layers made of polycrystalline silicon (41, 42, 43, …, 4N) in a direction parallel to the spiral spring axis (A) and a first, outer layer (5) is made of silicon dioxide. |
