Adjustable Rotary Structure

An adjustable rotary structure comprising:

• a first restricting assembly;
• a second restricting assembly corresponding to the first restricting assembly;
• a rotary member being formed with a restricting hole and a shift hole, the restricting hole and the shift hole being spaced apart by a certain distance, the first restricting assembly being inserted through the restricting hole of the rotary member, the second restricting assembly being inserted through the shift hole of the rotary member to horizontally move;
• and
• a positioning seat being formed with a positioning groove, a restricting circular groove and a restricting groove, an end of the first restricting assembly being positioned in the positioning groove of the positioning seat in such a manner that the restricting hole of the rotary member abuts against the positioning groove and is restricted on the positioning seat, an end of the second restricting assembly being selectively positioned in the restricting circular groove or the restricting groove of the positioning seat to force the rotary member to rotate along a circular path or an elliptic path.