Abstract: A hinge structure includes a first base, a second base, a first linking rod, a second linking rod, and a torque assembly. The first linking rod has a first pivot part, a first sliding part, and a second pivot part. The first pivot part is pivoted to the first base, and the first sliding part is slidably connected to the second base. The second linking rod has a second sliding part, a shaft part, a third pivot part, and a fourth pivot part. The second sliding part is slidably connected to the first base. The third pivot part is pivoted to the second base. The second pivot part is pivoted to the fourth pivot part. The torque assembly has a sleeve part sleeved on the shaft part and a connection part connected to the second base. The sleeve part generates torque during rotation with respect to the shaft part.

Abstract: A hinge structure includes a first base, a second base, a first linking rod, a second linking rod, and a torque assembly. The first linking rod has a first pivot part, a first sliding part, and a second pivot part. The first pivot part is pivoted to the first base, and the first sliding part is slidably connected to the second base. The second linking rod has a second sliding part, a shaft part, a third pivot part, and a fourth pivot part. The second sliding part is slidably connected to the first base. The third pivot part is pivoted to the second base. The second pivot part is pivoted to the fourth pivot part. The torque assembly has a sleeve part sleeved on the shaft part and a connection part connected to the second base. The sleeve part generates torque during rotation with respect to the shaft part.

Abstract: A 360° bi-directional rotary hinge formed of a fixed bracket, a rotary bracket, a limiter plate, a stop plate, a positioning plate, a spring ring and a fastening member for use in a folding electronic device is disclosed. Subject to matching between bottom blocks of the limiter plate and arched sliding grooves of the stop plate, movement of the stop plate is constrained by the fixed bracket, and therefore rotation of the rotary bracket of the 360° bi-directional rotary hinge is limited to a forward and backward 360° angle. Further, the stop plate carries an index block corresponding to a ?180° angle indication hole and a 180° angle indication hole on the base member of the folding electronic device for giving an indication when the rotary bracket is rotated to +180° or ?180° angle relative to the fixed bracket.

Abstract: A 360° bi-directional rotary hinge formed of a fixed bracket, a rotary bracket, a limiter plate, a stop plate, a positioning plate, a spring ring and a fastening member for use in a folding electronic device is disclosed. Subject to matching between bottom blocks of the limiter plate and arched sliding grooves of the stop plate, movement of the stop plate is constrained by the fixed bracket, and therefore rotation of the rotary bracket of the 360° bi-directional rotary hinge is limited to a forward and backward 360° angle. Further, the stop plate carries an index block corresponding to a ?180° angle indication hole and a 180° angle indication hole on the base member of the folding electronic device for giving an indication when the rotary bracket is rotated to +180° or ?180° angle relative to the fixed bracket.