Electronic device and hinge module thereof

A hinge module, adaptable for an electronic device which comprises a first body and a second body, comprising:

• a first pivot component, fixed on the first body and having a positioning portion;
• a second pivot component, fixed on the second body, wherein the first pivot component is pivoted to the second pivot component, and adaptable to rotate relative to the second pivot component to drive the positioning portion to move along a moving path;
• and
• a sliding component, slidably disposed at the second pivot component and having a positioning structure, wherein when the sliding component is at a first position, the positioning structure is on the moving path,
• when the first pivot component rotates relative to the second pivot component in a first pivot direction and drives the positioning portion to arrive at the positioning structure along the moving path, the second pivot component stops the sliding component from sliding and a structural interference is formed between the positioning portion and the positioning structure to position the first pivot component and the first body,
• when the first pivot component rotates relative to the second pivot component in a second pivot direction opposite to the first pivot direction, the sliding component is pushed by the positioning portion to slide relative to the second pivot component from the first position to a second position so as to drive the positioning structure to move away from the moving path.