Patent ID: 8884145

Claim:
A percussion device of a cajon, provided for tapping on a tapping surface of the cajon to produce a sound, comprising: a base, including a bottom plate and two upright columns, and the two upright columns being disposed on the same side of the bottom plate; a pedal, having a first end and a second end disposed apart from each other, and a position between the first end and the second end being pivoted onto the bottom plate, and the first end being proximate to the two upright columns; a pivot, horizontally pivoted to the top of the two upright columns, and including an inner segment disposed between the two upright columns and an outer segment extended out from the upright column; a hammer, fixed to the outer segment of the pivot; a restoring tension spring, with an end coupled to the base, and the other end coupled to the pivot, for driving the pivot to restore its original position after being rotated; a link member, coupled between the first end of the pedal and the pivot, and limited by the rotation of the pivot to control the first end of the pedal to be normally swung downwardly and the second end of the pedal to be normally swung upwardly; such that when the second end is stepped upon to swing downwardly, the first end is swung upwardly to displace the link member and pull the pivot to overcome the spring tension limitation and rotate, while stretching the restoring tension spring, and the hammer pivotally swings towards the tapping direction together with the rotation of the pivot; and the restoring tension spring pulls the pivot to rotate in reverse when the pedaling force disappears, and displaces the link member to control the first end to swing downward and restores its original position.