A novel-structure electric
piano keyboard comprises parts like black keys, white keys and a
chassis. The white keys and the black keys are mounted on the
chassis through a front rail, a middle rail and a rear rail, a linkage rod is mounted on a main rail through a linkage shaft frame, a
cam is mounted on the main rail through a
cam shaft frame, an adjusting button is mounted on the main rail through a crab claw, the main rail is mounted on a support, the upper rail and the lower rail are respectively mounted on the support to limit movement positions of a counterweight hammer
handle and a counterweight hammer within a range below the upper rail and above the lower rail, the upper end of an ejector rod is abutted against the
cam, a hook and the counterweight hammer
handle are fixedly mounted on the cam, the hook contacts with ejector rod
skin both before and after the keyboard moves, and the hook breaks away from the ejector rod
skin in the movement process of the keyboard; the counterweight hammer
handle is fixedly connected with the counterweight hammer, and when the black keys or the white keys are strummed to lower to the bottom, the hook mounted on the cam contacts with the ejector rod
skin mounted on the ejector rod to stop return movement of the cam so as to prepare for next stressed movement of keys; when fingers of a player leave the keys, the hook can push the ejector rod back to an original position to enable keyboard structure to quickly restore to an original position.