Device for regulating the motion of a mechanical horological movement
First Claim
1. A device for regulating motion of a mechanical horological movement, the regulating device comprising:
- a frame;
a resonator attached to the frame and comprising a first annular periodic magnetic structure including a first whole number N1 of angular periods and which defines a first central axis, the first magnetic structure forming an inertial portion of the resonator;
a second annular periodic magnetic structure including a second whole number N2 of angular periods and which defines a second central axis, the second number N2 being different from the first number N1, the second magnetic structure being configured to rotate relative to the frame about the second central axis which has a determined position relative to the frame;
wherein at least one magnetic structure from among the first and second magnetic structures includes magnetized material in each of the angular periods thereof;
the resonator is configured to have a resonant mode in which the first magnetic structure is subject to a curvilinear translation relative to the frame about the second central axis with a resonance frequency F1;
the first and second magnetic structures are configured to have a magnetic interaction between them such that a rotation at a frequency F2 of the second magnetic structure relative to the frame and about the second central axis, by application of torque within a useful torque range, allows the resonant mode to be excited and such that the frequency F2 of the relative rotation of the second magnetic structure and the resonance frequency F1 have between them, within the useful torque range, a given relationship RFr, that is RFr=F1/F2, which is equal to the second whole number N2 divided by the difference Δ
N between the second whole number N2 and the first whole number N1, such that Δ
N=N2−
N1 and RFr=N2/Δ
N.
1 Assignment
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Accused Products
Abstract
A device regulating motion of a mechanical horological movement includes: a frame; a resonator attached to the frame and including a first annular magnetic structure including N1 magnets arranged regularly in a circle and a resilient structure; a second annular magnetic structure including N2 magnets defining a central axis about which the structure rotates, N2 being different than N1. The resonator is configured so that a resonant mode in which the first magnetic structure is subject to curvilinear, or substantially circular, translation about the central axis may be excited by rotation of the second magnetic structure. The two magnetic structures define a magnetic cycloid gear such that the regulating device incorporates a reducer of frequency between the resonance frequency and the rotational frequency of the second magnetic structure which is rigidly connected to an escapement wheel.
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Citations
25 Claims
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1. A device for regulating motion of a mechanical horological movement, the regulating device comprising:
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a frame; a resonator attached to the frame and comprising a first annular periodic magnetic structure including a first whole number N1 of angular periods and which defines a first central axis, the first magnetic structure forming an inertial portion of the resonator; a second annular periodic magnetic structure including a second whole number N2 of angular periods and which defines a second central axis, the second number N2 being different from the first number N1, the second magnetic structure being configured to rotate relative to the frame about the second central axis which has a determined position relative to the frame; wherein at least one magnetic structure from among the first and second magnetic structures includes magnetized material in each of the angular periods thereof; the resonator is configured to have a resonant mode in which the first magnetic structure is subject to a curvilinear translation relative to the frame about the second central axis with a resonance frequency F1; the first and second magnetic structures are configured to have a magnetic interaction between them such that a rotation at a frequency F2 of the second magnetic structure relative to the frame and about the second central axis, by application of torque within a useful torque range, allows the resonant mode to be excited and such that the frequency F2 of the relative rotation of the second magnetic structure and the resonance frequency F1 have between them, within the useful torque range, a given relationship RFr, that is RFr=F1/F2, which is equal to the second whole number N2 divided by the difference Δ
N between the second whole number N2 and the first whole number N1, such that Δ
N=N2−
N1 and RFr=N2/Δ
N. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification