Hinge mechanism for foldable electronic device

An electronic device comprising:

• a main housing;
• a cover;
• and
• a hinge mechanism for rotatably hinging the main housing and the cover, the hinge mechanism comprising:
• a case fixedly engaged with one of the main housing and the cover;
• at least one retractable elastic shaft with two opposite shaft ends;
• a mounting member fixedly located in the case and engaged with one shaft end;
• and
• a rotating member partly rotatably located in the case and engaged with the other shaft end, a part of the rotating member protruding out of the case and being fixedly engaged with the other of the main housing and the cover;
• wherein the mounting member is rotatable relative to the rotating member to drive the retractable elastic shaft to move between a first position where the retractable elastic shaft is slantwise to an axis of the rotating member and a second position where the retractable elastic shaft is parallel to the axis of the rotating member.

A hinge mechanism for hinging a cover and a main house of an electronic device, the hinge mechanism comprising:

• a rotating member configured for being fixed relative to one of the main housing and the cover;
• a mounting member configured for being fixed relative to the other one of the main housing and the cover, the mounting member spaced from and rotatable with respect to the rotating member;
• and
• at least one elastic shaft engaged between the mounting member and the rotating member, and circumferentially biasing the mounting member and the rotating member with respect to each other.