Peripherally reinforced laminated loudspeaker diaphragm
AssigneeSony Corporation
InventorsAtsushi Matsuda, Jun Kishigami, Masaaki Nishimura
Life of this patent
Estimating the term…
Abstract
A diaphragm for a loudspeaker includes first and second sheet members between which a core member is sandwiched and secured so that the core member has peripheral edge portions extending between the edges of the sheet members and at which the core member is of relatively low strength. A strip-like edging member, preferably of a thermosetting resin, is secured to the peripheral edge portions of the core member and to the edges of the sheet members for increasing the rigidity of the diaphragm at its periphery and preventing unwanted vibrations thereat. A damper member may be secured to the diaphragm adjacent the edging member for movably securing the diaphragm to a loudspeaker frame.
Claims11
A diaphragm for a loudspeaker comprising:
- first and second sheet members;
- a core member sandwiched between said sheet members and secured thereto, said core member having peripheral edge portions extending between edges of said sheet members and at which said core member is of relatively low strength;
- and
- a strip-like edging member secured to said peripheral edge portions of the core member and to said edges of the sheet members for increasing the rigidity of the diaphragm at its periphery and preventing unwanted vibrations thereat.
In a loudspeaker which comprises a loudspeaker frame, a diaphragm movably secured to said frame and including first and second sheet members and a core member sandwiched between said sheet members and secured thereto, and means for vibrating said diaphragm in accordance with a varying electrical signal supplied thereto;
- the improvement comprising, as a part of said diaphragm, a strip-like edging member secured to edges of said sheet members and to peripheral edge portions of said core member extending between said edges for increasing the rigidity of the diaphragm at its periphery and preventing unwanted vibrations thereat.
Dependencies are inferred from the claim text.