| 摘要 |
PROBLEM TO BE SOLVED: To enhance an assembling property of a spiral spring mechanism module. SOLUTION: The instrument is constituted of a driving body; and a body drivably supporting the driving body. The spiral spring mechanism module is constituted by a transmission means for giving/receiving an energy between the driving body and a spiral spring; the spiral spring for accumulating/releasing the energy; and a spiral spring accommodation part for accommodating the spiral spring. The assembling property is enhanced by providing a one-way clutch mechanism for transmitting only a force in one direction. |
