Disclosed is an apparatus for providing haptic feedback. The apparatus includes a frame having a protrusion extending from the side wall of the frame, a piezoelectricity vibrator including a substrate having a main body, at least one piezoelectric layer attached to the main body of the substrate, the main body defining two contact portions extending out of the side facing to the frame, and the two contact portions clip the protrusion for fixing together. The apparatus includes a first through hole arranged on the protrusion and two second through holes respectively arranged on the two contact portions and corresponding to the first through hole, and a screw passing through the second through holes and the first through hole for engaging the contact portions with protrusion together.