Multi-segment rotary shaft structure

A multi-segment rotary shaft structure applicable to an electronic device, the multi-segment rotary shaft structure comprising at least one driving joint assembly and driven joint assembly, the driving joint assembly and the driven joint assembly being pivotally connected and combined into the multi-segment rotary shaft structure, wherein:

• the driving joint assembly at least includes a first joint plate, a second joint plate opposite to the first joint plate and a middle link plate assembly, inward end of at least one of the first and second joint plates being formed with synchronous driving section, at least one of two ends of the middle link plate assembly being formed with connection driving section corresponding to the synchronous driving section for synchronously drivingly engaging with the synchronous driving section;
• the driven joint assembly is pivotally disposed between the inward ends of the first and second joint plates, the driven joint assembly at least including a first driven plate and a second driven plate opposite to the first driven plate, inward ends of the first and second driven plates being formed with synchronous driving sections, which are synchronously drivingly engaged with each other, inward ends of the first and second joint plates being correspondingly pivotally connected with outward ends of the first and second driven plates, the two ends of the middle link plate assembly being correspondingly pivotally connected with the inward ends of the first and second driven plates;
• and
• the driving joint assembly and the driven joint assembly are stringed and pivotally connected to form the multi-segment rotary shaft structure.