Piezoelectric screw and its limiting structure

Abstract

The application discloses a piezoelectric screw and a limiting structure thereof, and belongs to the technical field of precise piezoelectric micro driving, which comprises a guide sleeve fixedly arranged relative to a mounting carrier and a screw rod axially penetrating through the guide sleeve and threadedly matched with the guide sleeve; further comprising: a first stop portion synchronously rotating with the screw rod; a limiting protrusion fixedly arranged relative to the mounting carrier, and the limiting protrusion extending to a rotating path of the first stop portion; when the screw rod is in a first axial limit position, a first end surface of the limiting protrusion abuts against the first stop portion to prevent the screw rod from rotating and feeding in a first direction; by arranging the first stop portion and a second stop portion on a screw cap and fixing the limiting protrusion relative to the mounting carrier, the stroke of the screw rod can be limited along the axial direction of the screw rod, the structure does not need to additionally arrange a limiting component on the screw rod body, the diameter of the screw rod is not increased, and the structure is more suitable for installation and use in a narrow space.

Images