Patent ID: 8509471

Claim:
A speaker device for use with a vibration unit that includes a coil through which electric sounds flow, such that vibrations of the vibration unit produce a sound, the speaking device comprising: a magnetic circuit unit to generate a magnetic field for vibrating the vibration unit; an anchor portion to be fixed to the magnetic circuit unit and to restrain the vibrations of the magnetic circuit unit that receives a reaction force caused by the vibrations of the vibration unit, and a joint portion that attaches the magnetic circuit unit and the anchor portion together in a way that forms a predetermined space for magnetically separating the magnetic circuit unit and the anchor portion from each other between the magnetic circuit unit and the anchor position; wherein the magnetic circuit unit includes a magnet portion and a yoke portion to guide a magnetic flux of the magnet portion to a space in which the coil is disposed, and wherein the joint portion attaches the magnetic circuit unit and the anchor portion together in such a state that a spacer composed of a nonmagnetic material is interposed between the yoke portion and the anchor portion, and the spacer, composed of a member that differs from the anchor portion, is in contact with both the magnetic circuit and the anchor portion.