Safe and reliable trampoline

A trampoline comprising:

• a trampoline frame having a plurality of base pipes;
• a bounce cloth extending across the trampoline frame;
• a plurality of elastic bands, springs, or elastic ropes circumferentially connected at intervals between the bounce cloth and the trampoline frame;
• an enclosing cloth sewn at an edge of the bounce cloth such that the enclosing cloth covers the plurality of elastic bands, springs, or elastic ropes;
• and
• a hinged structure coupled between each of the plurality of base pipes;
• wherein the plurality of base pipes are movable between a folded position and an unfolded position via the hinged structure;
• wherein the hinged structure comprises a hinge seat and a hinge lug, the hinge seat and the hinge lug being hingedly coupled via a hinge shaft, wherein the hinge seat is provided with a limiting recess, and after the plurality of base pipes move to the unfolded position, at least one of the plurality of base pipes to which the hinge lug is connected is clamped in the limiting recess;
• and
• wherein a clamping groove is provided in the hinge lug at a proximal end thereof, wherein the clamping groove extends substantially perpendicular to a longitudinal axis of the hinge seat, a spring pin is installed on the hinge seat, and after the plurality of base pipes are moved to the folded position, a spring band of the spring pin is clamped in the clamping groove substantially along the longitudinal axis of the hinge seat to lock the plurality of base pipes in the folded position.