Umbrella capable of being quickly assembled and disassembled

An umbrella capable of being quickly assembled and disassembled, comprising:

• a column;
• a plurality of long rods each having a middle portion;
• a plurality of short rods;
• an upper nest;
• a lower nest;
• a plurality of rod connectors each having a rear end and a front end;
• a plurality of connecting mechanisms;
• wherein,
• each long rod has a first end which is detachably connected to the upper nest through one rod connector, and each short rod has a first end which is detachably connected to the lower nest through one rod connector and a second end which is detachably connected to the middle portion of the corresponding long rod through one connecting mechanism;
• each of the upper nest and the lower nest has a plurality of connecting grooves formed at intervals on a periphery of the upper nest and the lower nest, each connecting groove is for receiving one rod connector and has two inner walls, each of the upper nest and the lower nest has a plurality of pairs of connecting pins each pair protruding from two inner walls of the corresponding connecting groove;
• the rear end of each rod connector is connected to one long rod or one short rod, each rod connector has two sliding grooves respectively formed at a left side and a right side of the front end of each rod connector for receiving the pair of connecting pins, each sliding groove is distributed inclined and has an opening;
• when the front end of each rod connector is inserted into the corresponding connecting groove of the upper nest or the lower nest at a certain angle, each pair of connecting pins is capable of inserting into the corresponding two sliding grooves passing through the corresponding openings after rotating the rod connector, so as to make the rod connector quickly connect to the upper nest and the lower nest;
• the connecting mechanism between the long rod and the short rod comprises a connecting member having a U-shaped upper portion for receiving the long rod and a lower portion, the long rod has a plurality of connecting holes on the middle portion of the long rod, the U-shaped upper portion has corresponding thorough holes on a bottom of the U-shaped upper portion, the middle portion of the long rod is clamped within the U-shaped upper portion of the connecting member, the long rod is connected to the connecting member through rivets, the short rod has a connecting thorough hole at the second end of the short rod, the lower portion of the connecting member is a U-shaped connecting groove for receiving the second end of the short rod, the U-shaped connecting groove has a hole formed on two sides of the U-shaped connecting groove, respectively, the connecting member is detachably connected to the short rod through an elastic pin by passing through the hole and the connecting thorough hole;
• and
• the elastic pin has an inverted cone-shaped fixation step at a top end of the elastic pin and an elastic groove formed axially at the top end of the elastic pin, the top end of the elastic groove is divided into a left part and a right part by the elastic groove.