Sliding-type hinge

A sliding-type hinge mounted in a portable apparatus, the portable apparatus comprising a body housing and a sliding housing sliding forward and backward on the body housing by means of the sliding-type hinge to open from and close into the body housing, the sliding-type hinge comprising:

• a base fixed on the body housing;
• a slider fixed on the sliding housing;
• and
• a sliding means for sliding the slider forward and backward on the base, the sliding means comprising a first torsion spring and a second torsion spring disposed between the base and the slider, the first torsion spring having a first connecting end connected to one side of the base, and a third connecting end connected to the other side of the slider, the second torsion spring having a second connecting end connected to the slider and being at the same side with the third connecting end, and a fourth connecting end connected to the base and being at the same side with the first connecting end, wherein
• when the sliding housing being closed into the body housing, the first connecting end and the second connecting end being at the front of the third connecting end and the fourth connecting end, the first torsion spring and the second torsion spring being arranged in a cross-configuration;
• when the sliding housing being opened from the body housing, the first connecting end and the second connecting end being at the rear of the third connecting end and the fourth connecting end, the first torsion spring and the second torsion spring being arranged in a cross-configuration;
• wherein the first torsion spring has a first coil, a first elastic shaft and a third elastic shaft respectively extending from two ends of the first coil, and the first connecting end and the third connecting end respectively formed at free ends of the first elastic shaft and the third elastic shaft;
• the second torsion spring has a second coil, a second elastic shaft and a fourth elastic shaft respectively extending from two ends of the second coil, and the second connecting end and the fourth connecting end respectively formed at free ends of the second elastic shaft and the fourth elastic shaft;
• wherein the base has a first connecting hole and a second connecting hole respectively positioned at two sides thereof, the slider has a third connecting hole positioned at the same side with the second connecting hole thereof and a fourth connecting hole positioned at the same side with the first connecting hole thereof, the first connecting end, the second connecting end, the third connecting end and the fourth connecting end are respectively connected to the first connecting hole, the second connecting hole, the third connecting hole and the fourth connecting hole by rivets;
• and
• when the sliding housing being closed into the body housing, the first connecting end, the second connecting end, the third connecting end and the fourth connecting end appearing in an inverted isosceles trapezoid arrangement, the first connecting end and the second connecting end being at the front of the third connecting end and the fourth connecting end to constitute two end points of a bigger base of the inverted isosceles trapezoid, the third connecting end and the fourth connecting end constituting two end points of a smaller base of the inverted isosceles trapezoid, the fourth elastic shaft crossing with and setting on the first elastic shaft, the first coil being at the rear of the second coil.