Self-adjustable horological oscillator
AssigneeThe Swatch Group Research and Development Ltd
InventorsJean-Jacques BORN, Paulo BRAVO, Olivier MATTHEY
Life of this patent
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Abstract
A horological movement (6) including: a plate (7); a mechanical resonator (8) including an oscillating balance (11) rotatably mounted relative to the plate (7), and a spiral spring (22) coupled to the balance (11); an electromagnetic regulator (29) coupled to the mechanical resonator (8) to regulate the frequency of the oscillations of the balance (11), and including at least one permanent magnet (30) fixedly mounted relative to the plate (7), at least one coil (31), a quartz or silicon resonator (32) and an electronic circuit (33) connected to the resonator (32) and to the coil (31), all mounted on the balance (11) while being completely included in an inner cavity (18) delimited by the latter.
Claims12
A horological movement (6) comprising:
- a plate (7);
- a mechanical resonator (8) comprising:
- an oscillating balance (11) rotatably mounted relative to the plate (7) about an axis (12), this balance (11) having an upper face (16) and a lower face (17), and
- a spiral spring (22) coupled to the balance (11), this spiral spring (22) having a first end (23) fixed relative to the plate (7) and a second end secured to the balance (11);
- an electromagnetic regulator (29) coupled to the mechanical resonator (8) to regulate the frequency of the balance (11) oscillations, the electromagnetic regulator (29) comprising:
- at least one permanent magnet (30),
- at least one coil (31),
- a quartz or silicon resonator (32) and
- an electronic circuit (33) connected to the resonator (32) and to the coil (31), wherein
- the magnet (30) is fixedly mounted relative to the plate (7);
- and
- the coil (31), the resonator (32) and the electronic circuit (33) are mounted on the balance (11) while being completely included in at least one inner cavity (18) delimited by the latter.
Dependencies are inferred from the claim text.