Speaker unit and portable information terminal
AssigneeSanyo Electric Co., Ltd.
InventorTakashi Marugami
Life of this patent
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Abstract
[Problem] To provide a speaker unit and a portable information terminal that are reduced in size and thickness and still produce a high sound pressure. [Solving Means] A speaker unit includes: a yoke having a rectangular outline as seen in a plan view; a magnet member placed on the yoke and magnetized so that an upper surface of the magnet member has an N pole and an S pole aligned in one direction; a coil placed above and spaced from the upper surface of the magnet member; a diaphragm attached to the coil; and a frame supporting the diaphragm. The yoke includes an attachment which protrudes upward from an outer periphery of the yoke for attachment to the frame. The attachment has a recess at least in a central portion of the attachment 6 which crosses the one direction.
Claims6
A speaker unit comprising:
- a yoke which has a rectangular outline as seen in a plan view;
- a magnet member which is placed on said yoke and magnetized so that an upper surface of the magnet member has an N pole and an S pole aligned in one direction;
- a coil which is placed above and spaced from said upper surface of said magnet member;
- a diaphragm which is attached to said coil;
- and
- a frame which supports said diaphragm, wherein
- said yoke includes an attachment which protrudes upward from an outer periphery of the yoke for attaching said yoke to said frame, and
- said attachment has a recess at least in a central portion of said attachment which crosses said one direction.
Dependencies are inferred from the claim text.