125results about "Loudspeaker diaphragm materials" patented technology

The embodiment of the invention provides an acoustic device and electronic equipment, the acoustic device comprises a first closed cavity and a second closed cavity, a spacing part can be at least partially and flexibly deformed, the first closed cavity is adjacent to a vibrating diaphragm, and the second closed cavity is far away from the vibrating diaphragm; When the vibrating diaphragm vibrates, the internal sound pressure of the first closed cavity is changed, the flexible deformation part is deformed along with the change of the sound pressure in the first closed cavity, and the volume ofthe first closed cavity is flexibly adjusted; The second sealed cavity seals sound waves generated when the flexible deformation part deforms in the second sealed cavity, and the flexible deformationpart is of a single-layer structure made of a thermoplastic elastomer material layer or a multi-layer composite structure at least compounded with a thermoplastic elastomer material layer. Therefore,the acoustic device provided by the invention can increase the sound capacitance of the flexible deformation part, thereby reducing the resonant frequency of the sound production device and effectively improving the low-frequency effect of the sound production device.

The present invention provides a loudspeaker including an edge formed in such manner that a thickness of a sectional shape in a radial direction increases from an inner peripheral portion toward an outer peripheral portion. Due to this structure, a mechanical impedance of the edge against a diaphragm is decreased and bad influences on a vibration mode of the diaphragm are suppressed, and also, vibration energy is absorbed by a thick portion of the outer peripheral portion, thereby suppressing standing waves of the diaphragm.

The present invention is a loudspeaker. The loudspeaker includes a frame, a cone having an outer edge in a shape of a reverse angle flange, and a reinforcing ring bonded to a back side of the flange.

A speaker edge is made of a thermosetting composition consisting of a polyurethane prepolymer and an inactivated solid polyamine as a latent hardener. A gas is dispersed in the thermosetting composition, prior to feed into a mold, so that it can foam and solidify to give the speaker edge. In a method of making the speaker edge, the composition will be injected into a female mold segment heated below the critical thermosetting temperature, foaming the composition. Then placed in the female segment is a male segment heated above the critical temperature, causing the ingredients to react with each other to solidify in the mold. An apparatus for making the speaker edge from the composition has: a device for intake of a gas, another device for injecting the composition into the gas, another device for mechanically dispersing the gas throughout the composition, still another device for injection of this gas-containing composition into a female mold segment, a further device for placing a male segment in the female segment, and a still further device for solidifying the composition, while foaming it.

A micro speaker is disclosed. The micro speaker includes a diaphragm and a voice coil for driving the diaphragm, the diaphragm including a conductive dome a suspension surrounding the conductive dome; a conductive front cover located adjacent to and keeping a distance from the conductive dome; and a capacitor formed by the conductive dome and the conductive front cover for outputting electrical signals according to vibrations of the diaphragm and for detecting real-time replacement of the diaphragm.

A speaker diaphragm includes a body vibrating to generate a sound, an edge fusion-bonded to an outer circumference portion of the body, a projection provided on an upper surface of the edge, and a gasket provided on a lower surface of the edge. The edge is made of material different from that of the body. The projection is made of material identical to that of the edge. The gasket is made of material identical to that of the body. A speaker including the diaphragm has waterproof property by itself.

A suspension member for a diaphragm, the suspension member comprising an inner portion being adapted to be attached to a substantially stiff piston part, a outer portion arranged on or integrated with a substantially stiff support member so as to mechanically stabilize the suspension member, and a flexible member connecting the inner and outer portions. The present invention further relates to an electro-acoustic transducer, preferably a miniature electro-acoustic transducer, applying such suspension member.