| 摘要 |
PURPOSE: A system for adjusting the length of a bracelet or strap is provided to adjust the length of a bracelet or a strap by making a protrusion slide against a case. CONSTITUTION: A system for adjusting the length of a bracelet or strap comprises a case, a protrusion(4), and a control unit(5). The case fixes a bracelet or a strap consisting of two wearing strings. The protrusion fixes two wearing lines on the case, adjusts the length of the bracelet or strap. The control unit comprises one or more temperature sensors in order to measure the ambient temperature. The protrusion includes an orifice and a tooth-shape part(8). The tooth-shape part runs with a gear(7) driven by the motor(6).
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