Patent ID: 8513510

Claim:
A marching drum assembly, including: a supporter, having a board-shape frame, wherein a thickness of the frame is smaller than a width of the frame; at least an engaging element, including a first clipper board and a second clipper board which are parallel to each other, a clipper trough being formed between the first and the second clipper boards to receive the frame of the supporter, the first clipper board having a first end and an opposite second end, the second clipper board having a third end and an opposite fourth end, the first end of the first clipper board connecting with the third end of the second clipper board, the second end of the first clipper board corresponding to the fourth end of the second clipper board positionally, a first slot being formed at the second end of the first clipper board, a positioning element being disposed at the fourth end of the second clipper board and including a pivot member, a threaded rod, and a rotating portion, the pivot member connecting with the fourth end of the second clipper board pivotably, at least part of the rotating portion having a larger external diameter than an internal diameter of the first slot, an end of the threaded rod connecting fixedly with one of the pivot member or the rotating portion, the other one of the pivot member or the rotating portion forming a threaded hole to screw with the other end of the threaded rod, the positioning element is capable of pivoting between a first position and a second position; at least a drum body, the drum body connecting with one of the first clipper board or the second clipper board; wherein when the positioning element is at the first position, the threaded rod is located in the first slot, a longitudinal direction of the threaded rod is perpendicular to the first and the second clipper boards, the rotating portion moves toward the pivot member when the rotating portion is rotated toward a specific direction, the rotating portion then abuts against a terminal end of the first slot to clamp and to position the first and the second clipper boards and the frame received in the clipper trough; wherein when the positioning element is at the second position, the threaded rod leaves the first slot, the longitudinal direction of the threaded rod is parallel with the first and the second clipper boards, the frame received in the clipper trough is able to be removed from the clipper trough.