| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluid discharge unit capable of stabilizing the movement of a moving body linearly moving a moving plate even if a stroke of the moving plate becomes long.SOLUTION: A fluid discharge unit 1 moving a moving plate 2 to discharge a fluid in a pressurizing chamber 3 from a discharge port 4a, is equipped with a moving body 6 which linearly moves the moving plate 2; a fixed body 7 which holds the moving body 6; and a supporting member 8 which connects the moving body 6 and the fixed body 7. The moving body 6 is equipped with a cylindrical bobbin 10 attached with the moving plate 2 on one end side, and a driving coil 11 wounds around an outer peripheral surface of the bobbin 10. The fixed body 7 is equipped with a driving magnet 13; and a columnar bobbin insertion member 14 inserted in an inner peripheral side of the bobbin 10 so as to form a magnetic path passing through the driving coil 11 by magnetic force generated by the driving magnet 13. In the fluid discharge unit 1, a guide mechanism 20 guiding the moving body 6 in a moving direction of the moving plate 2 is configured by the inner peripheral surface of the bobbin 10 and an outer peripheral surface of the bobbin insertion member 14.SELECTED DRAWING: Figure 2 |
