Patent ID: 9496777
Filing Date: 2016-11-15
CPC Classification: B06B,H02K

Claim Text:
1. A haptic actuator comprising: a base member; a hollow cylindrical coil disposed on an upper surface of the base member; a core formed in a center portion of the base member, the core having a through-hole vertically passing through the core, the hollow cylindrical coil surrounding the core; a cover member covering an upper portion of the base member, the cover member having a lower surface facing the upper surface of the base member; a vibration plate having a mounting part and a coupling part integrally extending from the mounting part and bent downwards towards the base member, wherein the mounting part is fixed to the lower surface of the cover member; and a vibration part having a weight body and a permanent magnet fixed to a center portion of the weight body, wherein the weight body is fixed to the coupling part of the vibration plate, wherein the permanent magnet is positioned directly above the core and spaced part from both the mounting part and the core, and wherein the permanent magnet has a width larger than the diameter of the through-hole of the core, and simultaneously equal to or larger than the width of the core.