Generator for a timepiece
AssigneeAsulab S.A.
InventorJean-Jacques Born
Life of this patent
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Abstract
Generator of the clockwork type including a stator formed of at least three coils (11a, 11b, 11c) and a rotor formed of two flanges (81, 82) carried by a shaft (5) and supporting an even number of magnets (91, 92). The rotor is formed of at least two distinct parts prior to assembly with the stator. In order to assemble the rotor, its shaft is introduced into a central space (13) defined by the coils coaxially to the axes of said coils, which thus allows the coils to be closer together so that the distance separating any two adjacent coils is less than the diameter D of said shaft (5) at its center.
Claims8
A generator of a clockwork type including a rotor including two flanges carried by a rotor shaft having an axis and a diameter D at its center, magnets, even in number, each being fixed to each flange, two consecutive or facing magnets having opposite polarity, said generator including a stator formed of at least three coils with axes parallel to that of said rotor and fixed onto a support, said coils being arranged between the two flanges, fitted with magnets after the generator is assembled, and defining between them a sufficient central space for the rotor shaft, wherein said rotor is formed of at least two distinct parts, prior to the assembly of said generator, which each include one of the two flanges so that said generator is assembled by introducing said rotor shaft coaxially to the axes of said coils into said central space defined between the coils, any two adjacent ones of said coils being separated by a distance less than said diameter D of said rotor shaft.
A watch comprising a movement fitted with a generator including a rotor including two flanges carried by a rotor shaft having an axis and a diameter D at its center, magnets, even in number, each being fixed to each flange, two consecutive or facing magnets having opposite polarity, said generator including a stator formed of at least three coils with axes parallel to that of said rotor and fixed onto a support, said coils being arranged between the two flanges, fitted with magnets after the generator is assembled, and defining between them a sufficient central space for the rotor shaft, wherein said rotor is formed of at least two distinct parts, prior to the assembly of said generator, which each include one of the two flanges so that said generator is assembled by introducing said rotor shaft coaxially to the axes of said coils into said central space defined between the coils, any two adjacent ones of said coils being separated by a distance less than said diameter D of said rotor shaft.
Dependencies are inferred from the claim text.