Portable tripod

A portable tripod, comprising:

• a connecting assembly;
• three supporting legs, wherein a head end of the supporting leg is rotatably connected with the connecting assembly, at least one supporting foot is embedded into each of the three supporting legs, and the three supporting legs and the supporting feet respectively in the supporting legs can be folded inwards to form a compact hollow cylinder;
• and
• a middle shaft tube, wherein the middle shaft tube is embedded into the connecting assembly, and the three supporting legs and the supporting feet respectively in the supporting legs can be folded inwards to allow the middle shaft tube to compactly combine with each other for the formation of the compact hollow cylinder, wherein
• n supporting feet are embedded into the supporting leg in sequence, and n is a positive integer of larger than or equal to 3;
• a limit hole is formed in a tail end of the supporting leg;
• head ends of the first to (n-1)-th supporting feet are provided with a locating hole and a locating device respectively, the locating device comprises a base, a locating spring, locating shafts and a locating rail, the locating rail is mounted in the base and coaxial to the locating hole, the locating spring is arranged around the midpoint inside the locating rail, the locating shafts are arranged on both sides of the locating spring respectively, the locating shaft can move on the locating rail and is coaxial to the locating hole, and around the midpoint of the locating shaft is provided with a protruding fixture block;
• tail ends of the first to (n-2)-th supporting feet are provided with a limit hole and a fixed ring respectively, and the fixed rings are fixedly mounted at the tail ends of the first to (n-2)-th supporting feet;
• when the first supporting foot is stretched, the locating shaft of the first supporting foot enters into the limit hole in the tail end of the supporting foot under the effect of the locating spring;
• when the second to (n-1)-th supporting feet are stretched, the corresponding locating shaft enters into the corresponding locating hole under the effect of the locating spring;
• a tail end of the (n-1)-th supporting foot is provided with a limit ring;
• an unlocking hole is formed in the base at head ends of the second to (n-1)-th supporting feet, and the unlocking holes in the bases at the head ends of the second to (n-1)-th supporting feet are matched with the protruding fixture blocks around the midpoint of the locating shafts at the head ends of the first to (n-2)-th supporting feet respectively;
• a head end of the n-th supporting foot is provided with an unlocking block, an unlocking hole is formed in the unlocking block, and the unlocking hole in the unlocking block is suitably matched with the protruding fixture block around the midpoint of the locating shaft at the head end of the (n-1)-th supporting foot;
• the transverse sections of the first to (n-2)-th supporting feet are in a shape of “( )”, a shape of “< >” or other similar variants;
• the n-th supporting foot is provided with a fastening device, and the fastening device is suitably matched with an inner wall of the (n-1)-th supporting foot;
• and a tail end of the n-th supporting foot is provided with a foot cap.