| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a constant force device, a movement, and a mechanical timepiece which can decrease a loss of power for controlling rotation of a stop wheel.SOLUTION: A constant force device includes an inner carriage 34 that outputs an output torque by being rotated around a tenon of a first inner rotation body and a tenon of a second inner rotation body; a constant force spring that supplies a rotation force to the inner carriage 34; an outer carriage 33 that stores a resilient force in the constant force spring by being rotated around a tenon of a first outer rotation body and a tenon 39b of a second outer rotation body 39; a stop wheel 70 that is supported to be rotatable around a stop wheel axle body in the outer carriage 33, and that is rotatable around the tenon of the first outer rotation body and the tenon 39b of the second outer rotation body 39; and a stopper that is rotated around the tenon of the first inner rotation body and the tenon of the second inner rotation body together with the inner carriage 34, and that engages with the stop wheel 70 in response to the rotation of the stop wheel 70 which is rotated around the stop wheel axle body.</p> |
