Patent ID: 7816598

Claim:
An electronic keyboard musical instrument comprising: a keyboard assembly including a plurality of juxtaposed keys and a plurality of juxtaposed inertia presenting mechanisms, each of the juxtaposed keys being swingably supported on a first swing fulcrum for assuming an undepressed position and a depressed position, and each of the inertia presenting mechanisms being swingably supported on a second swing fulcrum and swingably linked to each corresponding one of the keys; a key bed provided underneath the keyboard assembly for supporting the keyboard assembly, the key bed defining a front edge which is toward an instrument player and a rear edge which is away from the instrument player; an actuator assembly including an actuator unit having a plurality of actuating members, each of the actuating members being associated with each corresponding one of the inertia presenting mechanisms and arranged at a position which is nearer than the first swing fulcrum to the front edge of the key bed for actuating the corresponding inertia presenting mechanism to bring the associated key from the undepressed position to the depressed position, each of the actuating members being arranged in the vicinity of the second swing fulcrum in two rows as a front row and a rear row with the adjacent actuating members being disposed in the rows different from each other and extending through the key bed downward; and an actuator cover for covering the actuator assembly from underneath.