Speaker
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorRyo KURIBAYASHI
Life of this patent
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Abstract
A speaker is disclosed in which a split resonance of a diaphragm main body and a natural resonance of an edge are controlled, achieving a high sound quality while realizing a weight reduction. A diaphragm is composed of a diaphragm main body and an edge. An outer peripheral part of the diaphragm main body is bonded with a peripheral edge of a frame through the edge. An external shape of edge is formed in substantially a perfect circle. While, at least one of the outer peripheral part of the diaphragm main body and an inner peripheral part of the edge, which is a mutual bonding portion, is formed in a different shape than the perfect circle.
Claims11
A speaker comprising:
- a magnetic circuit having a magnetic gap formed in a ring shape;
- a frame bonded with the magnetic circuit in a central part of the frame;
- and
- a diaphragm which central part is bonded with a voice coil placed in the magnetic gap in a freely movable manner and which outer peripheral part is bonded with a peripheral edge of the frame through an edge,
- wherein an external shape of the edge bonded with the outer peripheral part of the diaphragm is formed in a perfect circle;
- and
- wherein at least one of the outer peripheral part of the diaphragm and an inner peripheral part of the edge, which is a mutual bonding portion, is formed in a different shape than the perfect circle.
A speaker comprising:
- a magnetic circuit having a magnetic gap formed in a ring shape;
- a frame bonded with the magnetic circuit in a central part of the frame;
- and
- a diaphragm which central part is bonded with a voice coil placed in the magnetic gap in a freely movable manner and which outer peripheral part is bonded with a peripheral edge of the frame through an edge,
- wherein an internal shape and an external shape of the edge, and an external shape of the diaphragm are respectively formed in a perfect circle;
- and
- wherein the diaphragm and the edge are overlaid with respective center shifted each other and are bonded together.
Dependencies are inferred from the claim text.