Patent ID: 7030522
Filing Date: 2006-04-18
Classification: H04R

Abstract:
1. An exciter for directly vibrating a board comprising: a magnetic circuit unit having a dish-shaped outside yoke comprised of a side wall and a bottom connected with each other, a permanent magnet fastened to said bottom, and an inside yoke placed on said permanent magnet and provided with a clearance from said side wall; a coil wound around a bobbin and inserted into said clearance causing said board to vibrate when a drive signal is supplied thereto; and a coupler member fastening said bobbin and provided with supports for supporting an elastic member connected to said magnetic circuit unit; wherein said coupler member having a mount for attachment to a bracket member attached to the surface of the board, and engagement means capable of engaging with a work tool being provided on an outside surface of said outside yoke for attachment/detachment of said coupler member with respect to said bracket member.