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Winding wheel for use in watch movement, has projection detached from engaged part to rotate wheels, where force is applied to projection when manual winding torque is applied to limiting mechanism and adapted to separate projection
Winding wheel for use in watch movement, has projection detached from engaged part to rotate wheels, where force is applied to projection when manual winding torque is applied to limiting mechanism and adapted to separate projection
The wheel (1) has a torque limiting mechanism (5) including an engaging arm part (82) extending from a proximal end part to a distal end part equipped with an engaging projection (83) that is elastically engaged in an engaged part (66) by pressurization. The projection is detached from the engaged part to rotate crown wheels (60, 70) when torque exceeding a threshold value is exerted. A force directed from the proximal end part to the distal end part is applied to the projection when manual winding torque is applied to the mechanism and adapted to separate the projection from the engaged part.
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