Hinge assembly with integrating shaft

A hinge assembly for a foldable portable electronic device, comprising:

• a shaft, the shaft comprising a pole portion, wherein one end of the pole portion has a keyed cross-section and two opposite parallel planes and two opposite arcuate faces, and said end of the pole portion transversely defines a hole therethrough between the parallel planes;
• a case drive member;
• a prime mover spring having two end portions, the end portions being respectively secured to the shaft and the case drive member;
• a main body drive member movably engaged with the case drive member;
• a locating cylinder for receiving the main body drive member therein, the locating cylinder comprising an annular body and defining at least one hole throat an outer periphery of the annular body;
• at least one diving pin having one end abutting the case drive member;
• a manual button adapted to retain an opposite end of said driving gin;
• and
• a positioning pin for holding the shaft and the main body drive member;
• wherein the shaft extends through the prime mover spring, the case drive member and the main body drive member thereby integrating the hinge assembly into a complete unit.

A foldable portable telephone comprising:

• a flip case provided with a first barrel portion;
• a main body case provided with a second barrel portion;
• and
• a hinge assembly fixed in the two barrel portions thereby rotatably connecting the flip case to the main body case, the hinge assembly comprising:
• a shaft;
• a prime mover spring having two end portions;
• a case drive member with a cam face, the cam face having two slopes at opposite sides of a ridge;
• a main body drive member coaxially arranged with the case drive member, and having a cam face engaged with the cam face of the case drive member, the cam face having a slope and a seat portion at respective opposite sides of a ridge;
• a locating cylinder for receiving the main body drive member therein;
• at least one driving pin having one end abutting the case drive member;
• and
• a manual button adapted to retain an opposite end of said driving pin;
• wherein the shaft extends through the prime mover spring, the case drive member and the main body drive member thereby integrating the hinge assembly into a complete unit, with the two end portions of the prime mover spring being respectively secured to the shall and the case drive member.